The Project for the Study on Water Sector for the Host Communities of Syrian Refugees in Northern Governorates in the Hashemite Kingdom of Jordan
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THE HASHEMITE KINGDOM OF JORDAN MINISTRY OF WATER AND IRRIGATION (MWI) WATER AUTHORITY OF JORDAN (WAJ) YARMOUK WATER COMPANY (YWC) THE PROJECT FOR THE STUDY ON WATER SECTOR FOR THE HOST COMMUNITIES OF SYRIAN REFUGEES IN NORTHERN GOVERNORATES IN THE HASHEMITE KINGDOM OF JORDAN MASTER PLAN SEWERAGE FINAL REPORT JANUARY 2015 JAPAN INTERNATIONAL COOPERATION AGENCY TEC INTERNATIONAL CO., LTD. GE YACHIYO ENGINEERING CO., LTD. JR NIHON SUIDO CONSULTANTS CO., LTD. 15-006 THE HASHEMITE KINGDOM OF JORDAN MINISTRY OF WATER AND IRRIGATION (MWI) WATER AUTHORITY OF JORDAN (WAJ) YARMOUK WATER COMPANY (YWC) THE PROJECT FOR THE STUDY ON WATER SECTOR FOR THE HOST COMMUNITIES OF SYRIAN REFUGEES IN NORTHERN GOVERNORATES IN THE HASHEMITE KINGDOM OF JORDAN MASTER PLAN SEWERAGE FINAL REPORT JANUARY 2015 JAPAN INTERNATIONAL COOPERATION AGENCY TEC INTERNATIONAL CO., LTD. YACHIYO ENGINEERING CO., LTD. NIHON SUIDO CONSULTANTS CO., LTD. Currency Exchange Rates (JICA, September, 2014) 1 JD = 147.004 JPY = 1.4166 US$ 1 US$ = 103.77 JPY 1 US$ =0.7059 JD EXECUTIVE SUMMARY 1. Since the armed conflict in Syria in 2011 the influx of Syrian refugees has brought about large stress on the wastewater management facilities which cause overflows of wastewater and ceptage and insufficient wastewater treatment in the northern governorates in Jordan. In order to improve the sewerage service in northern governorates, the study has been initiated. 2. The Study is undertaken to formulate a master plan for sewerage system in order to identify the required improvements for the sewerage services in the Study area (Irbid, Ramtha, and Mafraq, refer to Figure 1.2 and 1.3 for locations), where the Syrian refugees are largely settled in the largest urban areas in the northern governorates. The Master Plan presents a sewerage development plan meeting the wastewater generation of 2035 Jordanian population, considering current level of Syrian refugees. 3. Even before the influx of Syrian Refugees, Water Authority of Jordan (WAJ) has developed and improved sewerage facilities to collect, convey and treat the wastewater generated in the Study area. At the Central Irbid wastewater treatment plant (WWTP) and Mafraq WWTP, the wastewater treatment process are modified enable to use the effluents for irrigation purposes and the construction work are underway. 4. Planning basis set for six sewerage district (SWD) are as shown below. Table 1 Planning Basis for Six SWDs Central Irbid Wadi Al- Shallala Wadi Ramtha Mafraq Item SWD Arab SWD SWD Hassan SWD SWD SWD 1) Service Area (ha) in 2035 696 4,613 6,523 1,453 2,483 3,770 2) Service Population in 2035 118,200 328,900 307,300 35,400 201,200 156,200 3) Design Flows Average Daily (m3/d) 10,880 28,430 22,520 2,490 17,270 14,360 Maximum Daily (m3/d) 12,720 33,260 26,360 2,920 20210 16,800 4) Design Influent Quality BOD5 conc. (mg/L) 706 752 887 924 757 707 SS conc. (mg/L) 652 694 819 853 699 653 5) Design Effluent Quality BOD5 conc.(mg/L) 30 30 30 30 30 60 SS conc.(mg/L) 30 30 30 30 30 60 + NH4 -N conc.(mg/L) 2.5 2.5 2.5 2.5 15 - NO3-N conc. (mg/L) 30 30 30 30 25 70 T-N conc. (mg/L) 45 45 45 45 45 80 5. Based on the assessment results on capacity of the existing trunk sewers, lift pump station and WWTP, the required improvements are identified and the facility plan is prepared to achieve the design bases. S-1 Table 2 Sewerage Improvement Plans for Six SWDs Central Wadi Al-Arab Shallala SWD Wadi Hassan Ramtha Mafraq Item Irbid SWD SWD SWD SWD SWD 1) Branch No need 200mm CP, 200mm CP, 257 200mm CP, 61 200mm CP, 216 km 200mm CP, Sewer 316 km km km 442km 2) Trunk No need No need 200mm CP 3.3km No need 300mm CP, 4.3 km 300mm CP, Sewer long, long, 150mm DIP, 19km, 400mm CP 2.4km long 200mm DIP, 23 4.6km long 200 mm DIP, 4.7km km, 250mm long, 200mm DIP, dual DIP 4km installation, 5.25km long, 200mm DIP, triple installation, 5.16km long 3) Lift No need Hakama LS Maghayer (Al Hoson LS 4 manhole pumps Mansha LS, Station increase Manhole Pump is to be shifted capacity of 3.25 capacity of and Al Hoson LS, to Shallala m3/min, Mafraq 2.32 m3/min capacity increase SWD) LS, capacity of 1.42 m3/min. 2.14 m3/min 4) WWTP Sludge De- three sets of one primary 20 sludge two sets of aeration Two lines of hydrator aeration tank sedimentation tank, drying beds. tank and final treatment and final two oxidation capacity is sedimentation tank and facilities, sedimentation ditches, and one 1,200 m3/d. sludge de-hydrator, capacity 3,600 tank, capacity final sedimentation Capacity 4,400 m3/d m3/d each 3,500 m3/d tank, to cover the each. each design flow increase of 8,520 m3/d. 6. Facility construction plan by three phases are proposed considering the priorities of new sewerage service area. The service population is assumed to set connection rate to identify the timing of expansion of treatment capacity at the respective WWTP. The project cost is estimated for each phases for six SWDs. Table 3 Implementation Schedule and Cost Estimates Central Irbid Wadi Al-Arab Shallala Wadi Hassan Ramtha SWD Mafraq SWD Phase SWD SWD SWD SWD Phase-1 1) Sludge 1)Br. sewer 1)Br. Sewer No plan 1)Br. Sewer 1)Br. Sewer (Y2017-21) de-hydrator 168km, 90km, 66km 122km 2)Hakama LS 2)Trunk sewer 2) Trunk Sewer 2)Trunk Sewer, 2.32 m3/min, 3.3km, 4.3 km (300CP) 15km(300CP), 3)WWTP: one 3)Maghayer 3)One set of 3km (200DIP) set of aeration Manhole Pump aeration tank and 3) Mansha LS, tank and final final capacity of 3.25 sedimentation sedimentation m3/min tank, capacity tank, capacity 4)One line of 3,500 m3/d 4,400 m3/d and facilities, sludge de- capacity 3,600 hydrator m3/d Direct Cost 1.200 24.024 11.397 0 14.192 22.962 (Million JD) Indirect Cost 0.535 11.069 5.080 0 6.325 10.235 (Million JD) S-2 Central Irbid Wadi Al-Arab Shallala Wadi Hassan Ramtha SWD Mafraq SWD Phase SWD SWD SWD SWD Phase-1 Project Cost 1.735 35.093 16.477 0 20.517 33.197 (Million JD) Phase-2 No plan 1)Br. Sewer 1)Br. Sewer 1)Br. Sewer 1)Br. Sewer 1)Br. Sewer (Y2022-26) 88km 39km 18km 53km 164km 2)WWTP: one 2) Trunk Sewer 2)WWTP: 20 2)Trunk Sewer, set of aeration 4.6km (400 CP) sludge drying 4 km(300CP) tank and final 3) Al Hoson LS beds 3) Mafraq LS, sedimentation is shifted from capacity of 2.14 tank, capacity Wadi Hasan m3/min 3,500 m3/d SWD, with 4)One line of capacity increase facilities, 1.42 m3/min capacity 3,600 m3/d Direct Cost - 13.700 5.965 2.403 6.355 25.691 (Million JD) Indirect Cost - 6.413 2.660 1.070 2.833 11.451 (Million JD) Phase-2 Project Cost - 20.113 8.625 3.473 9.188 37.142 (Million JD) Phase-3 No plan 1)Br. Sewer 1)Br. Sewer 1) Br. Sewer 1)Br. Sewer 1)Br. Sewer (Y2027-32) 61km 129km 43km 97km 156km 2)WWTP: one 2) one primary 2)Trunk Sewer 2)Trunk Sewer, set of aeration sedimentation 150-200mm DIP 4km (250DIP) tank and final tank, two 3) 4 manhole sedimentation oxidation pumps tank, capacity ditches, and one 4)One set of 3,500 m3/d final aeration tank and sedimentation final tank, to cover the sedimentation design flow tank increase of 8,520 m3/d. Direct Cost - 10.549 24.967 5.137 19.616 19.584 (Million JD) Indirect Cost - 5.008 11.128 2.289 8.742 8.728 (Million JD) Phase-3 Project Cost - 15.557 36.095 7.426 28.358 28.312 (Million JD) Total Project Cost 1.735 70.763 61.197 10.899 58.063 98.651 (Million JD) Grand Total Project Cost 301.308 (Million JD) 7. The economic evaluation is carried out based on the benefits and costs. The evaluation reveals that the EIRR of the project results in 18.6% as a whole, which exceed 10% of the opportunity cost of capital though the EIRRs vary from SWD to SWD. Therefore, the project is judged to be economically feasible. 8. The financial evaluation is carried out based on the revenues and costs. The evaluation reveals the S-3 FIRRs of every SWD do not exceed 6% of the opportunity cost of capital. And the project results in - 11.6% as a whole. It is apparent that the low level of present sewerage tariff and the huge project costs are the major reasons for the negative FIRR. Therefore the increase of sewerage tariff and the government grant to a part of the project cost are recommended to make the project financially feasible. Meanwhile, even though tariff increase and grants, the project net cash flow will be negative until the end of the phase-3. For this, the WAJ subsidies are required until the phase-3 to sustain the project financially. 10. The phase-1 project of Central Irbid SWD is recommended to implement as soon as possible, because the proposed sludge dewatering facilities for Central Irbid SWD are essential to treat and dispose of properly.