Allu

conventional wastewater treatment plant was designed for an average flow of 35000m3/d. The process train includes preliminary treatment (bar rack and aerated grit chamber), primary sedimentation, conventional activated sludge and a final clarifier. Develop the construction cost of the plant and annual operation and maintenance costs. Add in the construction costs: 28%for piping, electrical, and site preparation and 30%for engineering and construction supervision and contingencies. The sludge treatment costs are not included in this project. Hint: Use equations given below for

cost estimates for each individual unit.

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