The sewage and the industrial wastewater after the treatment have the potential of reuse. The treated sewage/effluent can directly be used for irrigation or plantation depending upon the crops or the nature of the plantation. By giving polishing treatment to the treated sewage/effluent, it can be reused or recycled for cooling towers, washing purposes, flushing in the toilets, and with further advanced treatment like reverse osmosis, it can be used for boiler or process applications. By putting up the wastewater recycling plant, the disposal of treated sewage/effluent can be minimized where the disposal is a major issue. The wastewater recycling plant will also have an impact in saving the raw water and minimize the freshwater withdrawal or its requirement.
The sewage/wastewater recycling plant will consist of polishing treatment in terms of disinfection, sand filtration, and carbon absorption, and Reverse Osmosis is an advanced treatment.
Chokhavatia Associates have undertaken wastewater recycling plant projects for various industries. There are full-scale installations and wide experience in operation and maintenance of such systems for soft drink bottling, pharmaceutical, food, dairy, and townships. For the industrial establishments, the treated effluent is reused for crate washing, floor washing, raw vegetable washing, and also for cooling purposes. For the township, the treated sewage was reused for toilet flushing of the entire township.
The sewage/wastewater recycling plants are designed as per the type of effluents and impurities normally present in the sewage/wastewater and the type of quality of the freshwater requirement. The recycling plant for the reuse of treated sewage/wastewater will have organic and inorganic impurities removal system even the impurities present are in traces. The recycle plants are put up entirely based on the specific requirement of the client as well as the cost benefits of the raw water withdrawal and the disposal of the treated effluents. The operations of recycling plants where the removals of the inorganic salts are required are highly sensitive and a high degree of precision is to be maintained. It will also have high capital and operating cost.
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