Pre-Feasibility Project Report
For
Development of New Civil Enclave at Agra Airport (Near Air Force Base), Uttar Pradesh
Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Chapter - 1 New Civil Enclave at Agra Airport (Near Air Force Base)
1.1 Background
Agra is a city on the banks of the river Yamuna in the Northern State of Uttar Pradesh. Agra is a major tourist destination because of its many Mughal-era buildings, most notably the Taj Mahal, Agra Fort, Fatehpur Sikri, all three of which are UNESCO World Heritage Sites. Agra is included on Golden Triangle tourist Circuit, along with Delhi Jaipur, Uttar Pradesh Heritage Arc, tourist circuit of UP state, along with Lucknow the capital of the state and Varanasi.
Existing Agra Airport
Agra Airport belongs to IAF and AAI maintain a civil enclave. Agra Airport, at an elevation of 168 m the sea level is a domestic airport serving the city of Agra. Agra, being a renowned tourist spot, is well linked directly or indirectly via air route to all major cities in the country. The main airline operating at the Agra airport is Air India.
1.2 Construction of New Civil Enclave at Agra Airport near Agra Air force Base
Airports Authority of India has proposed development of New Civil Enclave at Agra Airport near Agra Air force base to boost the tourist inflow in the city.
Total land required for proposed civil enclave will be 49.8 Acres, which is being transferred by State Govt of Uttar Pradesh.
Scope of Work for Proposed Civil Enclave
Scope of work is prepared for development of new Civil Enclave at Agra for Construction of Apron of park 04 Nos A 321 types of aircraft with provision of parking Code „E‟ types of aircraft with MARS configuration, link taxi track, terminal building for 700 passengers (500 Domestic and 200 International) as per IMG norms and Multilevel Car Park (MPCP) for 350 cars, surface parking for 20 VIP cars and 05 buses. As per CPMS forecast the Peak Hour Passengers (PHP) is 700 Pax (500 Domestic and 200 international) as international chartered flights are also operating from Agra Airport.
Airports Authority of India 2 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
(A) Civil Works
i. APRON AND TAXIWAY
Construction of Apron of dimension 155.5 m x 139.5 m, suitable for the parking of 02 nos. of A-321 type of aircraft with the provision of parking Code E type of Aircraft with MARS configuration in power -In /Push-Back configuration with the 10.5 m wide shoulders all around the apron. Provision of GSE area of dimension 42 m x 84 m also made in the layout plan. Construction of link taxi track dimension of 650 m x 23 m with 10.5 m shoulders of either side of the taxi track, subject of clearance from IAF. The strength and clearance of apron & link taxi track to be kept in accordance with requirements of Code – E types of a/c. Development of taxiway strip with suitable grading (overall width 95 m). The slope on the apron, taxiway, strip, etc, should be as prescribed in DGCA CAR under various paragraphs. Storm water drains to be provided to operational/non-operational areas.
ii. NEW INTEGRATED TERMINAL BUILDING
Construction of one and half level integrated terminal building of 16700 sqm for 700 Peak Hour Capacity (500 domestic passengers and 200 international passengers) with the provision of aerobridge along with basement of 5000 sqm for baggage handling system. An area of 2200 sqm has been kept for retail / commercial outlets / retiring rooms and airlines offices. Terminal building Departure area, arrival area, security hold area and concourse are to be provided with adequate nos. of toilets for gents, ladies and differently abled persons and drinking water. Suitable numbers of ramps to be provided for entry and exit of differentially abled persons in departure and arrival area. Overall planning of building will capture local architectural features and it will be part of the design features of terminal. The design should include the required arrangement for its regular maintenance so as to make it in built part of execution. Solar power generation vix solar lighting, solar roofing system including provision of regular cleaning with maintenance hoist, hooks, etc including cat walk / rope suspended platform/gondola etc will be provided.
(a) Common Concourse
Common Concourse area should have provision for Meet and Greet area, snack bar, facilitation counters, toilets, AHU switch room, drinking water, first aid room, Child care room, supporting office for AAI, airlines and APHO.
Airports Authority of India 3 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
(b) Check-In Area
The check-in concourse should have 18 nos. Check-in counters along with adequate queuing space. 01 no baggage conveyor belt for registered baggage. Adequate number of toilets (ladies, gents and physically challenge persons) back up offices for airlines, AHU, switch room, drinking water facilities, storing space for 200 baggage trolleys, etc, area for commercial facilities. Seating arrangement for passengers after check-in and before security check. Isolated smoking area with proper ventilation. Provision of CITE, CUSS
(c) Security Hold Area
The security hold area with aerobridge and Bus lounge should have adequate seating arrangements with adequate numbers of toilets for ladies, gents and physically challenged person), drinking water, AHU switch room and isolated smoking area with proper ventilation. The passenger frisking area should have adequate space for locating required nos. of DFMDs, frisking booth 06 nos (04 for gents and 02 for ladies), space for 2 nos X Rays machine for hand baggage. Provision will be made for duty free/retails area without affecting the passenger movement area.
(d) Baggage Collection/Arrival Lounge
The baggage collection and arrival lounge should have 03 nos. (02 nos. Domestic & 01 no. International) conveyor belt of adequate length. Adequate space for storing baggage trolleys, space for storing of mishandled / unclaimed baggage. Adequate number of toilets (ladies, gents and physically challenged persons), AHU, Switch room, drinking water, prepaid taxi counter. Provision of Information Counter & Prepaid Taxi Counter and other commercial facilities. Provision of Baggage Reconciliation System
(B) Electrical Works
Internal and external electrification for Terminal Building Complex, associated building, car park and roads Augmentation of main power supply, submission equipment, DG Sets for Secondary Power Supply and associated ancillary building. Provision of central air-conditioning & ventilation (HVAC) system & BMS for New Terminal Building
Airports Authority of India 4 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Provision of conveyor belts at departure area with in line X-ray inspection system and other equipment at departure area and inclined carousels at arrival hall. Provision of fire detection & alarm system, provision of fire hydrants and water sprinklers system as per standards along with fire extinguishers Provision of Automatic sliding doors at exit and entry points of terminal building Provision of adequate number of signage inside and outside the terminal building, car park area and City side approach road and air side area for guidance of passengers and visitors. Provision of light masts on apron. Provision of perimeter lighting. Provision of 02 nos aerobridges. Provision of visual docking /guidance system.
(C) Airport Systems
Public Address System and Car Calling System Surveillance close circuit TV System (SCCTC) and provision of adequate number of close circuit TV monitors, in the Security Control Room, Terminal Manager Room, APD Office, etc. Provision of Flight Information Display System (FIDS) with adequate number of Display Devices in departure, arrival and security hold area for passenger facilitation. Provision of adequate number of X ray machines for scanning registered baggage (RB) / Hand Baggage (HB) including provision of required number of ETDs, DFMDs & HHMDs as per BCAS norms. Provision of adequate no. of VHF FM sets (Walkie-Talkie, Base Stations and Mobile Stations) Provisions of Telephone Exchange/ digital EPABX/IP EPABX system for Terminal Building including Telephone /Intercom instruments, wiring, etc.
(D) IT Systems
Passive and Active Networking components such as OFC, UTP cabling, Routers, Core and Access switches and accessories. Provision of Raceways, cable trays and conducting and cabling. Sever room and adequate space for keeping network switches along with electrical power points & UPS. Access Control System as per BCAS requirement Provision of internet, VPN bandwidth, Wi-Fi System
(E) Miscellaneous Works
Provision of Trolley gate on the link taxi track to segregate the operation area of IAF & AAI. Construction of pump house for overhead water tank and sump etc for terminal building.
Airports Authority of India 5 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Provision of gates to segregate air side and city side area with security guard posts at the entry and exit gates. Construction of perimeter road of 3.5 m width with shoulders all along the boundary wall inside operation area. Construction of 04 lane approach road from nearest main road to Terminal Building via shortest distance. Horticulture and gardening works on city and airside of terminal building. Provision of water storage and water supply scheme and rain water harvesting system and Sewage Treatment Plant (STP). Construction of boundary wall of 2.45 m + 0.45 m with concertina coiled barbed wire. Construction of regular boundary wall around the operational area and fencing all around the airport.
1.2.1 Project Cost for Development of New Civil Enclave at Agra Airport
The estimated project cost for Development of New Civil Enclave at Agra Airport is approx. Rs 300 Crores.
1.3 Infrastructure
Agra, a district headquarter, is well connected by air, rail and road. Distance of other airport from Agra Airport are as given below:
Gwalior 100 KM Delhi 178 KM Jaipur 217 KM Lucknow 296 KM
1.4 Project Site Details
The site for proposed civil enclave comprises 49.8 Acres of land. Proposed terminal building is located at Longitude 77°56´50.12” E and Latitude 27°08´30.47” N with elevation of 168 m above MSL. The map and google earth showing 10 km radius area around the proposed civil enclave is shown as Figure 1.1 and Figure 1.2. The site plan of the proposed civil enclave is shown in Figure 1.3 on google map and as Figure 1.4 on revenue map.
1.5 Environmental Sensitivity
The environmental sensitivity for the development of proposed civil enclave at Agra Airport is described below:
Incumbrance free land for the proposed civil enclave is being handing over by the State Govt. to Airports Authority of India.
Airports Authority of India 6 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
There is no forest land involved in the development of the proposed civil enclave at Agra Airport. There is no wildlife sanctuary or national park within 10 km distance from the site. Soor Sarovar Bird Sanctuary is located at distance of 14.75 km in NW direction. Tajmahal is located at a distance of 10.1 km aerial distance in ENE direction from the proposed civil enclave. Yamuna river is flowing at distance of 9.1 km in NE from proposed civil enclave site. There is no state or national boundary within 15 km radius area. Within the 15 km area around the site for proposed civil enclave, most of the part of Agra City is located which has UNESCO World Heritage Sites like Taj Mahal (10.1 km) and Red Fort (8.3 Km) and other tourist attractions namely Sikandra (8.8 km), etc. There is no critically polluted area with 10 km distance from the site for proposed civil enclave. The proposed civil enclave is located within Taj Trapezium Zone. Nearest major railway station is Agra Cant Station, which is located at an aerial distance of 4.6 km. District Headquarter of Agra is located at distance of 9 km.
Airports Authority of India 7 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Figure 1.1: 10 Km Radius Area around the proposed Civil Enclave on Google Map
Airports Authority of India 6 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Civil Enclave
Figure 1.2: 10 Km radius Area Around the Proposed Civil Enclave
Airports Authority of India 7 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Figure 1.3: Layout Plan for New Civil Enclave on Google map
Airports Authority of India 8 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Figure 1.4: Layout Plan for New Civil Enclave on Village Map
Airports Authority of India 9 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Chapter - 2 HVAC and BMS System for the Proposed Terminal Building
2.1. General
This Chapter outlines the design features, basis of design, estimated requirements etc. of the HVAC System at proposed terminal building. The proposal for installing microprocessor based control system (BMS) is also outlined in this Chapter.
2.2 Design Considerations
The system proposal is designed to fulfill the following objectives:
Low capital cost. Energy efficient throughout the varying load patterns Minimum power demand. Providing required Indoor air quality (IAQ) with reduced operating cost. Maximum flexibility of operation. Use of highly responsive control system (BMS) to optimize system functioning.
2.3 Energy Efficient
The air conditioning systems operate between a minimal demand of 40% and up to a maximum demand of 95% for a major part of the year.
Hence, the selection proposed is such that the overall power requirement remains consistent with the demand, avoiding all possible waste.
2.4 Flexibility
The use of Air cooled chilling units have been proposed instead of water cooled chillers.
This will avoid use of cooling towers and condenser water pumps, thereby reducing by nearly 40% the number of equipments which have to be operated and maintained.
The chiller will be fitted with air cooling pads to reduce power consumption and save 80% water as compared to water cooled system, the cooling pads will be used whenever Ambient temperature crosses 35°C.
Airports Authority of India 11 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
The use of air cooled chillers will thus simplify operation and also avoid worrying about availability of water in cooling towers at all times.
There will be separate pumps for secondary circuit.
In addition each floor will have independent Air handling Units ( AHUs ).
This will ensure that the equipment in operations is as per demand without any wastage of power.
2.5 Control System
It is proposed to use microprocessor based control system (BMS) to optimize plant operation and minimize running costs.
The various systems are selected carefully to provide maximum benefits at a reasonable cost.
The BMS will also be used to integrate other services and control external lighting and monitor other services.
2.6 Salient Feature of Air-cooled Chilling Units
The air-cooled chillers are packaged and factory assembled and consists of the following components:
Screw / Scroll compressors. Shell and tube chiller. Condenser coils Condenser fans Control Panel Weather proof housing.
These chillers are designed and manufactured for outdoor installation either on the ground or on the roof, where they can get un-hindered supply of fresh air.
2.7 Screw Compressors
The screw compressors are nearly as efficient as Centrifugal Compressors and consume approx. 0.71 IkW per ton to 0.73 IkW per ton in the proposed capacity range. These compressors have very few moving parts. Hence their wear and tear is less and this reduces the maintenance costs.
Airports Authority of India 12 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
These units are currently being imported or assembled in India from Imported components and they come equipped with a microprocessor based control panel. Hence, the output is automatically matched with the demand. Thereby, these units result in further power saving. They can be used efficiently down to 1/3 of the rated output.
2.8 Control System
It is proposed to install Microprocessor Based DDC Control system, (BMS) for operating the HVAC plant, water supply system, common lighting and for monitoring other systems. The use of BMS has the following advantages.
a. The sequencing of the chillers and pumps will be done automatically as per the load requirement, thus avoiding wasteful operation.
b. The plants will operate automatically as per programmed schedule the controllers will estimate the actual requirement on any particular day depending on outside temperature and accordingly decide the lead time required to achieve design inside conditions, in all areas, at the start of offices.
c. All these feature help to bring down the energy consumption by 10 to 15%.
d. All standby pumps are rotated automatically to provide equal wear and tear and reduce fatigue.
e. All external lighting and common area lighting are controlled automatically to save energy.
f. The water supply system is controlled and operated as per requirement without any wastage.
g. All other services are monitored.
2.9 Estimated Load Requirement
At the proposed civil enclave 2X400 TR (12 Working +1 Standby) air cooled screw chillers are proposed.
2.10 System Concept
The main chilling station will have multiple screw chillers.
Airports Authority of India 13 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
It is proposed to have strip heaters in supply air ducts for winter heating.
A standby chiller is also proposed.
The system has been designed on the basis of many areas having high heights.
Further, it is proposed to install nozzle type diffusers for long throw of air from such AHUs.
The A.C. plant will be placed outside in service yard along with other electric and water services.
2.11 Building Management System (BMS)
It is proposed to provide a Microprocessor Based Building Management and control system (BMS) for HVAC system and other services to create an intelligent building.
Airports Authority of India 14 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Chapter - 3 Electrical Service for Proposed Terminal Building & Allied Units
3.1 General
The proposed terminal building shall have plinth area of approx. 16700 sq.m in (including 2200 sqm for retail and office area). For baggage, basement of 5000 sqm is proposed.
3.2 Estimated Electrical Load
The estimated electrical loads for proposed civil enclave are will be 1250 kW
3.3 DG Sizing
Two DG sets of 1000 kVA and two DG Sets of 500 kVA capacity each are proposed at new civil enclave.
Airports Authority of India 16 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Chapter - 4 Water Supply, Sewerage, Drainage & Fire Fighting
4.1 Introduction
The proposed terminal building at Agra Civil Enclave shall have plinth area of approx. 16700 sq.m in (including 2200 sqm for retail and office area). For baggage, basement of 5000 sqm is proposed.
4.2 Expected Population per Day at Proposed Civil Enclave
The expected population per day at the Civil Enclave is given below:
Arriving and Departing Passengers - 4000 Airport Staff - 200 Drivers/Visitors - 400
Water required as per National Building Code 2016 is given below.
Air Passenger - 70 Litres/Head Terminal Staff - 45 Litres/Head/Day Visitors - 15 Litres/Head/Day Food court per Seat - 35 Litres/Head/Day
4.3 Water Requirement
Water requirement for the proposed civil enclave is estimated in Table 4.1. Total water requirement is estimated as 632 kld for domestic, HVAC and horticulture. As treated wastewater will be utilised for horticulture, therefore fresh water requirement is estimated as 387 kld.
Airports Authority of India 19 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Table 4.1: Water Requirement Calculations for Proposed Civil Enclave at Agra
S. Description Total Daily LPCD for LPCD for Potable Flushing Total Population Population Potable Flushing Water Water Water No. at Peak (Considering water Water Demand Demand Demand hour 7.5 hr Peak (l/day) population per day) Terminal Building 1 700 4000 40 30 160,000 120,000 280,000 (Passenger Load) Permanent Terminal Building Population 2 200 25 20 5,000 4,000 9,000 (AAI, Airlines & O&M, Vendors) 3 Visitors etc. 400 10 5 4,000 2,000 6,000 Water Requirement for 4 @ 35 Lit /seat for Food 200 25 10 5,000 2,000 7,000
Court Total in Litre/day 174,000 128,000 302,000 Total in KLD 174 128 302 5 Soft Water Demand Soft water Make-up requirements for Cooling Towers 100000 Say in (kld) 100
6 Horticulture Water Demand 33 % of Total Site area (Total Site = 16.43 Acres @ 14,000 ltr./Acres) 230.02 Say in (kld) 230
Total Water Demand for All Purpose in kld 632
Airports Authority of India 20 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Table 4.2: Water Requirement Calculations for Proposed Civil Enclave at Agra A Total Water Demand (in kld) 1) DOMESTIC WATER DEMAND (i) Total Potable Water Demand 174 (ii) Total Flushing Water Demand 128 Total Domestic Water Demand 302 2) Total Horticulture Water Demand 230 3) Total Soft Water Demand 100 Grand Total of Water Demands for all Purposes 632
B Total Available Treated Effluent for Recycling (In kld) 1) Total Sewerage Generated (Total Domestic Demand x 0.9) 272 Total Treated Effluent Water Available from STP for 2) 245 Recycling (90%) Total of Available Water for Re-use 245
C Total Utilized Treated Effluent (In kld) 1) Amount Reused for Horticulture Purposes 230 1) Amount Reused for HVAC/Flushing 15
D Balance Water Requirements (In kld) 1) Daily Fresh Water Required per Day for Potable Purpose 302 2) Daily Fresh Water Required for HVAC 85
3) Total Daily Net Fresh Water Demand in KLD 387
4.4 Sources of Water
Water requirement will be met through deep tube wells.
4.5 Sanitary Fixtures & Toilet Accessories
Water Closet: All water closets will be wall hung with concealed dual flushing cistern and in lodders and staff toilets WC will be provided with dual flushing cistern. Under counter/ circular above counter wash basins with battery operated auto sensor pillar taps will be provided.
Flat back wash basins with CP brass self-closing pillar tap will be provided in lodders and staff toilets. Semi stall urinal with battery operating auto sensor flush valves. Frosted Glass urinal portion with metal clips. Vitreous china recess toilet paper holder. Automatic soap dispenser on wash basins (Stainless steel). Automatic air purifier (Stainless steel). Toilet tissue paper holder (Stainless steel). Automatic electrically operated hand drier (Stainless steel).
Airports Authority of India 19 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
4.6 Water Distributions Pipe and Fittings
G.I. / composite Pipe and fitting for hot and cold water. Heavy class G.I. pipe and fitting in shaft and under floor. All external underground water pipe will be cast iron Class LA conforming to IS:1536 with specials and lead joints.
4.7 Sewerage Treatment and Disposal
As per water balance diagram, 272 kl/d sewage will be generated after the operation of new civil enclave which will be treated in STP of 300 kl/day capacity.
4.8 Sewage Treatment Plant
Sewage generated from the airport will be treated in well-designed Sewage Treatment Plant (STP). It is proposed to installed Moving Bed Biofilm Reactor (MBBR) type sewage treatment plant of 300 kl capacity.
Design of STP
Approximately 300 kl per day sewage/waste water will be generated from the proposed airport. Sewage will be collected and treated in well-designed sewage treatment plant. After meeting stipulated standards, treated waste water will be utilized for irrigation of greenery and landscaping.
Details of Sewage Treatment Process
The sewage from the proposed airport shall be collected by gravity into the collection tank/equalization tank of Sewage Treatment Plant (STP) via perforated screens to prevent the large particles into system. In equalization tank, pH and temperature of incoming sewage will be equalized. The sewage from equalization tank will be pumped to Moving Bed Biofilm Reactor (MBBR) reactor for biological treatment, where required quantity of air in presence of MBBR system will be supplied to meet the oxygen requirements by mean of blower and fine bubbles air diffusers. After MBBR reactor, sewage will flow by gravity to settler (tube type) where sludge will be settled at the bottom due to gravity. This settled sludge will be recycled through sludge pump to MBBR reactor to meet the mixed liquor suspended solids (MLSS) requirement, excess sludge will be discharged through filter press for final disposal. Final discharge of waste water from settler will be collected in chlorine contact tank, where some chlorine will be dosed for disinfections of treated waste water. Then, treated sewage will be pumped for tertiary treatment through duel media filter or it will be passed through or it will be passed through Ultraviolet (UV) disinfection system. Treated sewage will meet the norms prescribed by State Pollution Control Board and will be utilized for irrigation of greenery & landscaping purpose. Treated wasted water will not be discharged out side the boundary of proposed airport.
Airports Authority of India 20 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Design Parameters
Design parameters for proposed STP are given below: Sl. Parameters Inlet Outlet 1. BOD 300 mg/l Less than 20 mg/l 2. COD 400 mg/l Less than 150 mg/l 3. Oil & Grease 50 mg/l Less than 10 mg/l 4. TSS 200 mg/l Less than 50 mg/l 5. pH 6.5-8.5 mg/l 6.5-8.5 mg/l
No treated waste water will be discharged outside the airport. Unit wise description of the proposed STP is given below and shown in Figure 4.1:
Screen Chamber
Prior to the actual treatment of the wastewater, a screen chamber will be provided. In this chamber removable type mechanical bar screens will be provided for removal of various large size elements, such as paper, cloth, plastic etc, etc, which may hamper the satisfactory functioning of subsequent units of the STP, if not removed at early stages.
Oil & Grease Trap
The oil & grease trap will be provided to collect oil and grease trace coming with sewage. Collected oil & grease will be stored in a drum and disposed of in environmental sound manner.
Equalization Tank
As the quantity of the flow is non-uniform in nature, an equalization tank will have to be provided. By the provision of an equalization tank, wastewater characteristics will become homogeneous in nature and, therefore, better treatment can be achieved in the subsequent units of the STP. Diffused aeration will be provided in this tank to stir the contents of the tank completely.
MBBR Reactor (Biological Treatment)
Moving Bed Biofilm Reactor (MBBR) technology employs thousands of polyethylene biofilm carriers operating in mixed motion within an aerated wastewater treatment basin. Each individual bio carrier increases productivity through providing protected surface area to support the growth of heterotrophic and autotrophic bacteria within its cells. It is this high-density population of bacteria that achieves high-rate biodegradation within the system, while also offering process reliability and ease of operation.
Airports Authority of India 21 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
This technology provides cost-effective treatment with minimal maintenance since MBBR processes self-maintain an optimum level of productive biofilm. Additionally, the biofilm attached to the mobile biocarriers within the system automatically responds to load fluctuations.
The bacteria/activated sludge grow on the internal surface of the carriers. The bacteria break down the organic matter from the waste water. The aeration system keeps the carriers with activated sludge in motion. Only the extra amount of bacteria growth, the excess sludge will come separate from the carriers and will flow with the treated water towards the final separator. The system can consist of a one stage or more stage system (see underneath schedule), depending on the specific demands. The specific bacteria remain in their own duty tank because of the fact that the carriers remain in only 1 tank, protected by screens.
A bio-film develops on the media, which move along the effluent sewage in the reactors. The movement within the reactors is generated by providing aeration with the help of diffusers placed at the bottom of reactors. This thin film on the media enables bacteria to act up on the bio-degradable matter in the effluent sewage and thus reduce the BOD/COD content in presence of oxygen from the air used for fluidization. Aeration will be done with the help of twin lobe blowers. The MBBR reactors will increase the oxygen content of the sewage and thus, will help in the growth of the micro-organisms required to reduce the BOD. These micro-organisms will consume the organic matter and will convert it into active biomass, better known as sludge. The waste water, laden with sludge, will be transferred to tube settler for sludge separation.
Secondary Settling Tank Followed by Pre filtration Tank
The sludge formed will settle in the secondary settling tank followed by pre filtration tank. The settled sludge will be discharged in the Sludge Collection Tank and would be dewatered using sludge press. The clear supernatant from the outlet of the tube settler will be discharged as treated waste water and will be passed on to further treatment for final polishing. HDPE/PVC low maintenance tubes will be provided for trouble free operation of the tube settler.
Sludge Filter Press
The sludge from the settling tank of the STP will be collected in the tank and will be treated in the sludge press. This will be 24 plates CI sludge press completes with its pump and accessories. In sludge press, the sludge in the form of liquid slurry is fed into the press and dry solid cake of sludge is taken out from it. These dry cakes are used as manure for green belt and landscaping.
Airports Authority of India 22 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Pressure Sand Filter
For final polishing of the treated waste water, a Pressure Sand Filter (PSF) will be provided. The PSF comprises of a MS Vessel having filtering media sand topping for filtration of supernatant treated sewage water and thus ensuring clarity of water.
Activated Carbon Filter
For tertiary treatment, an Activated Carbon Filter (ACF) will be provided. This will be MS constructed tank in which activated charcoal/carbon will be filled as adsorbing media. This will not only adsorb impurities but will also act as the polishing tank for the final treated waste water. The resultant water shall be clear, odourless and will be reused for horticulture purpose.
Ultraviolet (UV) Disinfection System
Ultraviolet (UV) disinfection will use a UV light source. UV-rays are energy-rich electromagnetic rays that are found in the natural spectrum of the sunlight. They are in the range of the invisible short wave light having a wavelength ranging from 100 to 400 nm.
UV light source is mounted so that water can pass through a flow chamber, and UV rays are admitted and absorbed into the stream. When ultraviolet energy is absorbed by the reproductive mechanisms of bacteria and viruses, the genetic material is rearranged and they can no longer reproduce. They are therefore considered dead and the risk of disease has been eliminated.
UV plant will have following features:
Stainless steel construction Single lamp Long life of the UV Lamp
Airports Authority of India 23 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Figure 4.1: Schematic Diagram for MBBR Based STP
4.9 Rain Water Harvesting
Rainwater harvesting system for the proposed terminal building will be developed based in Central Ground Water Board (CGWB) Guidelines and Construction Manual of Ministry of Environment, Forest and Climate Change (MoEF&CC), Government of India. It is proposed to construct 25 rain water harvesting pits at the Civil enclave.
The cross section of rainwater harvesting pit is given in Figure 4.2.
Figure 4.2: Typical Cross Section of Rain Water Harvesting Pit
Airports Authority of India 24 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Chapter - 5 Solid Waste Management
5.1 Solid Waste Generation
It is estimated that approx. 600 kg/d solid waste will be generated from the airport. From the new terminal building, waste will be generated in the form of paper, plastics, polyethylene bags, and food waste, etc.
5.2 Solid Waste Management
The following measures will be taken for management of solid waste during operation phase of proposed airport.
Solid wastes management will be carried out as per Solid Wastes Management Rules, 2013. Wastes shall be collected in designated waste bins based on their types, placed at the strategic locations.
The solid waste handling and disposal services will be outsourced to authorized agency to ensure disposal of solid waste generated from the proposed airport. Solid waste generated in the aircrafts will also be disposed off at the designated waste collection points from where the agency will pick up the garbage bags. The agency will collect the garbage from designated bins, which will be spread over the area of proposed airport. The wet garbage of the aircrafts comprising of leftover food in the tray from the security gates of flight kitchens will be disposed off at the specified places.
The collected garbage will be transported in covered container and will be arranged to dispose off after segregation of recyclable wastes as per provisions of Solid Waste Management Rule 2016. After collection of garbage, garbage bins will be disinfected every day by sprinkling disinfectant powder by the agency. Weekly washing of garbage bins will also be carried out by this agency. After collection of waste, solid waste management plan to be followed by authorized agency is as given below:
• Segregation of recyclable and non-recyclable wastes. • Disposal of recyclable wastes for recycling. • Composting of biodegradable organic of wastes for captive use • Disposal of segregated wastes to common municipal waste landfill Site
Airports Authority of India 28 Development of New Civil Enclave at Agra Airport (Near Air Force Base), Agra, U.P.
Chapter - 6 Energy Conservation
6.1 Energy Conservation Measures
During design and construction of new terminal building at the proposed Civil Enclave at Agra airport necessary measures will be taken for conservation of energy in line with “Energy Conservation Building Code –2017” and “National Building Code 2016”. The important energy conservation measures proposed for new terminal building are described below:
Airport Terminal building will be designed and constructed for GRIHA Rating 4 star, Use of Energy Efficient building material & glass, Use of LED lamps instead of GLS lamps, Use of Solar Backed up Light Emitting Diode Lamps instead of par lamps, Energy efficient HVAC system, Solar passive techniques for terminal building, Use of 5 star BEE energy efficiency rating electrical equipments, Microprocessor-based Building Management System (BMS) will be installed for minimization of energy consumption, Automatic lighting on/ off control system will be provided in the airport area for optimum utilization of energy.
It is proposed that 100 KW solar power generation plant will be established at the airport to produce clean energy.
By adopting above measures about 30% energy will be saved.
Airports Authority of India 29