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Unabhängige,Independent consultantsberatende and und planning planende engineers Ingenieure for water, waste water, solid waste and environmental für Wasser-, Abwassertechnologies-, Abfall- und Umwelttechnik
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1. Introduction Hannover Oldenburg ∙ Erfurt Hannover ∙ Bremen Online- Measurement Erfurt
Online measurements in sewage treatment plant inlet as additional control element
Measuring, control and regulating technology installed in the sewage treatment plants is primarily designed to ensure optimized processes and process flows. Control and control functions work within the sewage system.
The conventionally installed EMSR techniques do not provide protection against load overloads in the plant inlet.
Risk of an overload with possible effects on the discharge concentrations into the receiving water body is not obvious.
1. Introduction Hannover Oldenburg ∙ Erfurt Hannover ∙ Bremen Online- Measurement Erfurt
Where is the hidden risk?
• Sewage treatment plants with a smaller degree of connection (Design capacity) and selective industrial discharge
• Sewage treatment plants with a higher degree of connection (Design capacity) and high industrial discharge
• Industries- / Industrial wastewater treatment plants
1. Introduction Hannover Oldenburg ∙ Erfurt Hannover ∙ Bremen Online-Measurement Erfurt
Presentation Content
• Which parameters are suitable for a identifying a hazard to a plant - Requirements for measuring technology - Requirements for information
• Installation examples Example 1: Measurement of COD and TNb for regulating the discharge load of an industrial discharger to a municipal sewage treatment plant Example 2: Measurement of COD / TNb / TP in the inlet of a plant treatment plant Example 3: Measurement of TOC in the outlet
Hannover Oldenburg ∙ Erfurt Hannover ∙ 3. Requirements for measurement technologies Bremen Erfurt
Online Measurement in Wastewater Discharge from Production
Hannover Oldenburg ∙ Erfurt Hannover ∙ 3. Requirements for measurement technolgies Bremen Factors for measuring technology Erfurt
. Operability . Robustness - Industry application . Operating time- calibration
. Simplicity – without the need to train staff . Operation Costs . Maintenance costs . Chemical demands . Remote maintenance . Measurement signal availability . Continuous / semi-continuous
Hannover Oldenburg ∙ Erfurt Hannover ∙ 3. Requirements for measurement technolgies Bremen Measuring technique Erfurt
. Approved measurement technologies according to the general criteria: . Temperature measurement
. pH . Conductivity . Oxygen contents . Ammonical nitrogen (ISE) . Redox potential
. Additional approved measuring technologies with higher investment costs
. PO4-P- Measurement
. NO3-N – Measurement . NH4-N - Measurement . TS - Measurement
Hannover Oldenburg ∙ Erfurt Hannover ∙ 3. Requirements for measurement technolgies Bremen Measuring technique Erfurt
Shortcomings . Existance of a proven measuring technique for determination of the inlet state.
. Illustration of only specific operating situations . Changes in the composition of a company's wastewater can not be adequately depicted . Complexity in evaluation of several required parameters . Determination of COD concentration / load during the production process is not possible
. Knowledge of the COD load from production for the benchmark, AUDIT and Indirect dischargers contracts.
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt
Application Examples
Example 1
COD und TNb - Controlling the Inlet Loads
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Anwendungsbeispiele Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
. Site Characterization . Companies in the food industry . ca. 25% - 30% share in the municipal sewage treatment plant . Chemical/Physical pretreatment with storage tank . Aims . Monitoring compliance with the waste water discharge contract
Payment for wastewater disposal
. Restriction of the wastewater load by the indirect discharger
Wastewater treatment plant overloading avoidance
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
. Discharge Limits . Wastewater amount . pH value
. Temperature . Carbon load (COD)
. Nitrogen load (TNb)
. Measuring techniques . MID (E+H) . pH – value (…) . Temperature (…) . Carbon (COD –Measurement Fa. LAR)
. Nitrogen (TNb – Measurement Fa. LAR)
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
Wastewater pretreatment plant
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
Chemical/Physical pretreatment
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
Polymerisation /Sludge dewatering
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
Mixing and Equalization Tank
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
LAR
Discharge into the munipical wastewater treatment plant
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
Measuring schaft with control valve
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
Measuring schaft with control valve
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
LAR device installation location
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
LAR device installation
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
Plant flow chart
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example1- COD und TNb - Controlling the Inlet Loads
PLS – COD Load [kg COD/h]
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example1- COD und TNb - Controlling the Inlet Loads Erfurt
PLS – TN load [kg N/h]
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt
Application Examples
Example 2
CSB,TNb, TP - Nutrient Dosing Control
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example 2- CSB,TNb, TP - Nutrient Dosing Control Erfurt
. Site Characterization . Companies in the food industry . Direct dischargers
. Anaerobic/aerobic wastewater treatment . Aims . Monitoring the discharge resulted from production
Wastewater treatment plant overloading avoidance
. Automation of oxygen, Urea, and phosporic acid dosing
Aerobic stage overloading avoidance
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example 2- CSB,TNb, TP - Nutrient Dosing Control Erfurt
. Measurement at measuring point 2 (MAB) . pH – value
. Volume
. COD, TNb,TP - Measurement
. Measurement Targets . Inlet load balance for the anaerobic stage . Acidification control(pH-value) . Automation of the nutrient dosing . Urea . Phosporic Acid
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example 2- CSB,TNb, TP - Nutrient Dosing Control Erfurt
. Measurement at measuring point 1 (production discharge) . pH - value
. COD, TNb, TP - measurement
. Measurement Targets . Continuous documentation of volume, pH – value, TOC . Production loss analysis . Sending signals during production for defined operational conditions (volume, TOC, pH-value – balance) . Protection of the wastewater treatment plant from overloading (Control of the emergency tank)
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example 2- CSB,TNb, TP - Nutrient Dosing Control
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example 2- CSB,TNb, TP - Nutrient Dosing Control
Anaerobic system
BiologicalBiologie Stage Secondary Clarifier
Pre-acidification Excess Sludge reservoir
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example 2- CSB,TNb, TP - Nutrient Dosing Control Erfurt
Measuring technology
Equalization tank
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example 2- CSB,TNb, TP - Nutrient Dosing Control
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Eamples Bremen Example 2- CSB,TNb, TP - Nutrient Dosing Control Erfurt
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example 2- CSB,TNb, TP - Nutrient Dosing Control Erfurt
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt
Application Examples
Example 3
TOC – Regulation of the emergency protection tank
Hannover Oldenburg ∙ Erfurt Hannover ∙ 3. Application Examples Bremen Erfurt Example 3-TOC in output
. Site Characterization . Companies in the food industry . High volume and und production range growth
. 3 production zones in the same location
. Targets . Product loss detection
„Retroactive effect“ for the Production process
. Detection of overloading situations in wastewater treatment plant
„Retrospective“ for the wastewater treatment plant
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Example 3-TOC in output Erfurt
. Measurement of partial flows . Volume . pH - value
. TOC - measurement
. Measuring targets . Continuous documentation of volume, pH – value, TOC . Production loss analysis . Sending signals during production for defined operation conditions (Amount, TOC, pH-value – balance) . Protection of the wastewater treatment plant from overloading (Control of the emergency tank)
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application fields Bremen Erfurt Example 3-TOC in output
Wastewater treatment
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Examples Bremen Erfurt Example 3-TOC in output
Wastewater treatment
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Example Bremen Erfurt Example 3-TOC in output
PID Online meaurement
Hannover Oldenburg ∙ Erfurt Hannover ∙ 4. Application Example Bremen Erfurt Example 3-TOC in output
Emergency Protection Tank
Hannover Oldenburg ∙ Erfurt Hannover ∙ Bremen Erfurt
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