Sewage treatment and reuse system

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment and reuse system, comprising a pretreatment system and a membrane deep desalination system. The pretreatment system comprises a regulation tank, a clarification tank, an ultrafiltration device and a sludge treatment device. The membrane deep desalination system includes a reverse osmosis treatment device. The regulation tank is used for receiving and regulating sewage. The clarification tank is communicated with the regulation tank, the sludge treatment device, and the ultrafiltration device separately. The ultrafiltration device is communicated with the reverse osmosis treatment device. The reverse osmosis treatment device is used for deep treatment of sewage and salt removingto allow the sewage to reach a water production reuse standard, thus reducing the emission load of concentrated water. The sewage treatment and reuse system can minimize the emission load of sewage and sludge, realize the cascade utilization of resources, and has the characteristics of a short process, a simple process, a mature and reliable single process, strong impact resistance, stable operation and good sewage treatment effect, and can generate great economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular, the invention relates to a waste water treatment and reuse system. Background technique [0002] Power plant circulating sewage has the characteristics of large water volume, high hardness and high suspended solids. As the main water-consuming part of power plants, wastewater reuse is one of the effective ways to alleviate the crisis of water resources and protect the water environment. If effective technology can be used to carry out advanced treatment of circulating sewage, it will not only increase the concentration ratio of sewage and reduce the amount of sewage discharge, but also use the treated water as replenishment water for the boiler makeup water system and circulating cooling water system, thereby greatly Reducing water consumption in power plants has far-reaching economic and environmental benefits. [0003] At present, there are many methods for sewage trea...

AI Technical Summary

Problems solved by technology

Due to the high content of dissolved solids in the sewage, and the different water sources lead to large differences in the quality of the sewage and the scaling components are different, so the parameters such as the type and particle size of the sludge produced during the coagulation and sedimentation are different, resulting in a process chain. Long, poor fluctuation resistance, poor coagulation and sedimentation effect, low removal rate of hardness (calcium, magnesium, iron, aluminum, zinc and other ions contained in water), low efficiency in the subsequent concentration stage, short life, etc., the entire process system is unstable. , even difficult to run for a long time

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