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Breakdown of running cost of wastewater treatment plant

Running COSTs of wastewater treatment plants

mainly include  wastewater discharge fee, electricity cost, chemical cost, staff cost, maintenance and replacement cost, sludge disposal, administration cost. Electricity cost usually accounts for the largest portion. The pecentages of the costs vary in different plants.

Construction costs of wastewater treatment plants
Breakdown of operating cost of a wastewater treatment plant

Example: Calculation of running costs of a 100,000m3/d wastewater treatment plant

Item Description Calculation Cost Percentage
Water discharge  fee $0.02/m3 0.02*100,000*30 $60,000 18%
Electricity fee $0.1 per KWh 0.30 Kwh*0.10*100,000*30 $90,000 27%
Chemical fee PAC and Cl2 (0.0001*4000*10+0.003*1)*100,000*30 $21,000 6%
Sludge transport and disposal 20% solid content, $30/ton 0.0001/0.2*100,000*30 $45,000 13%
Staff cost 24 staffs, average $2500/month salary 24*2500 $60,000 18%
Administration cost 50% of staff cost 24*2500*50% $30,000 9%
Maintenance and replacement cost yearly 1% of total construction cost 400*1%/12*100,000 $33,333 10%
Total monthly cost $339,333 100%
Costs per m3  wastewater treated $0.11

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