In some factories, such as mixing plants, sand washing plants, etc., a large amount of industrial wastewater is often generated during large-scale operations. The discharged industrial wastewater has high concentration, viscosity, and fine particles, which can cause significant environmental pollution and does not meet the requirements of environmental protection and green development in China. The emergence of a zero discharge system for sewage has greatly solved this problem, effectively addressing the wastewater generated during factory operation. Below, the editor will share with you the main sources and characteristics of zero discharge wastewater in sewage treatment.

1. What are the main sources of waste residue and wastewater

There are two main sources of wastewater: first, cleaning the wastewater generated by concrete tankers and mixers. This part of the wastewater has a large volume and high concentration. It generally contains sand and gravel. Powder mixture. Admixtures and other insoluble substances have unstable solid content. The second is to clean up the wastewater generated by the factory area and large vehicles entering and exiting the factory area, which is relatively simple and stable. The main source of waste is the mixture generated after the separation of the concrete tanker and mixer, which is mainly composed of sand and gravel.

2. What are the characteristics of a zero discharge sewage system

The zero discharge sewage system adopts a road mixing tank design instead of the previous underground mixing, which can save manpower and material resources and reduce on-site construction time. The upper end of the mixing tank is equipped with an anti overflow pipe. Once a large amount of sewage occurs, the sewage will directly flow into the conical pool along the anti overflow pipe to prevent it from being left outside the site and causing pollution. This device is equipped with a ladder and guardrail, which is safer and more convenient.

The zero discharge system for sewage adopts a secondary surface sand treatment system to achieve endless surface sand circulation, continuously reducing the concentration of sewage in the mixing tank and preventing excessive sedimentation in the tank. Accumulate; Separate fine sand for recycling, save raw materials, reduce material costs, and increase company profits.

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