Water Quality Monitoring and Procedures for Effective Environmental Management
8/23/2024
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Water Quality Regulation
8/23/2024
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Monitoring parameters
8/23/2024
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Location for sample collection
8/23/2024
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Monitoring procedures : on-site
8/23/2024
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Monitoring procedures : on-site
8/23/2024
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It is recommended that the final
effluent discharged into the
environment (sample no. 5)
does not exceed
50 NTU
Monitoring procedures : on-site
8/23/2024
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Measure from a 250-500 ml sample with the following equipment:
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Thermometer
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pH strips
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DO meter
The minimum
DO
value that the final effluent (VFCW outlet) should
reach before being released into the environment is
1.5 mg/L
Most microorganisms do well within a
pH
range of
6.5 to 8.5
The optimum efficiency is obtained at a
temperature
ranging
from
10 to 40°C
Monitoring procedures :
external laboratory
8/23/2024
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For each sample location, collect a 1000 ml
sample in a clean plastic container (free of
contaminants). Each sample will be sent to
the laboratory to be analysed. If immediate
analysis is not possible, refrigerate all the
samples to be sent to the laboratory (<4°C
but above freezing). Deliver samples to
laboratory as soon as practicable after
collection, typically within 2 days.
Proposed list of equipment
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1 Lab coat and non-latex gloves box
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1 sludge judge + brush
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1 sampling rode + 2 plastic cups (500 mL)
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1 pH strips box
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1 Dissolved Oxygen meter
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5 Sampling plastic bottle (1000 mL)
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10 glass beaker (250 mL)
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1 wash bottle and de-ionized water for rinsing
8/23/2024
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This document outlines the monitoring tasks, water quality regulation, parameters to be monitored, sample collection locations, and procedures for on-site monitoring in a wastewater treatment facility. It covers essential aspects such as level of sludge and scum, TSS, TDS, BOD5, pH, COD, DO, nitrogen levels, pathogens, turbidity, and odour. The document also provides specific instructions for monitoring sludge and scum levels, turbidity estimation, odour intensity measurement, and testing dissolved oxygen, pH, and temperature for efficient environmental protection. The information presented here is crucial for maintaining water quality standards and ensuring compliance with regulatory requirements.
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Presentation Transcript
Monitoring tasks in a DTF 8/23/2024 1
Water Quality Regulation 8/23/2024 2
Monitoring parameters On-site (1 / month) External laboratory (1 / 3-6 months) Level of sludge and scum Total Suspended Solid (TSS) Turbidity Total Dissolved Solid (TDS) Odour Biochemical Oxygen Demand (BOD5) pH Chemical Oxygen Demand (COD) Dissolved oxygen (DO) Nitrogen (NH4, NO3, NO2) Temperature Pathogens (E.Coli and Total Coliform) 8/23/2024 3
Location for sample collection Outlet chamber of the Balancing Tank 1 Outlet chamber of the Settler 2 1 Outlet chamber of the ABR 3 Last outlet chamber of the Sludge Drying Beds 2 4 3 Outlet chamber of the Vertical Flow Constructed Wetland 4 5 Upstream A B Downstream 5 B A 8/23/2024 4
Monitoring procedures : on-site Level of sludge and scum Settler tanks Scum layer > 5 cm Sludge layer > 60 cm Remedial actions Remove the scum layer entirely Remove the sludge layer and leave a minimum of 10 cm sludge layer at the bottom Remedial actions Remove the scum layer entirely Remove the sludge layer and leave a minimum of 30 cm sludge layer at the bottom (50 cm in the first 4 chambers) ABR chambers Scum layer > 5 cm Sludge layer > 100 cm 8/23/2024 5
Monitoring procedures : on-site Turbidity: visual estimation It is recommended that the final effluent discharged into the environment (sample no. 5) does not exceed 50 NTU Odour intensity measurement + ++ +++ ++++ +++++ Odour strength Odour: sensorial estimation Barely perceptible Slight Moderate Strong Very strong 8/23/2024 6
Monitoring procedures : on-site Dissolved Oxygen, pH, temperature Measure from a 250-500 ml sample with the following equipment: Thermometer pH strips DO meter The minimum DO value that the final effluent (VFCW outlet) should reach before being released into the environment is 1.5 mg/L Most microorganisms do well within a pH range of 6.5 to 8.5 The optimum efficiency is obtained at a temperature ranging from 10 to 40 C 8/23/2024 7
Monitoring procedures : external laboratory TSS, TDS, BOD5, COD, NH4, NO3, NO2, E.Coli, Total Coliform Parameter BOD5 COD TSS NH4 NO3 NO2 E.Coli Total coliform Results For each sample location, collect a 1000 ml sample in a clean plastic container (free of contaminants). Each sample will be sent to the laboratory to be analysed. If immediate analysis is not possible, refrigerate all the samples to be sent to the laboratory (<4 C but above freezing). Deliver samples to laboratory as soon as practicable after collection, typically within 2 days. 30 (mg/L) max 50 (mg/L) max 30 (mg/L) max 100 (mg/L) max 100 (mg/L) max 100 (mg/L) max Nil/100 ml 1000/100 ml 8/23/2024 8
Proposed list of equipment 1 Lab coat and non-latex gloves box 1 sludge judge + brush 1 sampling rode + 2 plastic cups (500 mL) 1 pH strips box 1 Dissolved Oxygen meter 5 Sampling plastic bottle (1000 mL) 10 glass beaker (250 mL) 1 wash bottle and de-ionized water for rinsing 8/23/2024 9
