Reuse water pretreatment device

The water source that meets the discharge standard after sewage treatment is called reclaimed water. Due to the lack of fresh water resources, the pressure of water environment protection and the increase of water cost, it has become a trend that reclaimed water is not discharged directly but is reprocessed and reused. Due to the use of the reuse system, 40-70% of the discharged water has been reused, saving new water consumption and reducing discharge, which has achieved positive significance in water saving and emission reduction. At the same time, the water use unit has reduced the cost of water use.

Different users have different requirements on the water quality of reused water. Generally, the reused water system consists of two parts: pretreatment and advanced treatment. The function of pretreatment is to make preliminary treatment to the raw water to meet the water inlet requirements of the advanced treatment system. For advanced treatment, different processes need to be determined according to different water quality requirements. Nanofiltration (NF), reverse osmosis (RO), ion exchange, etc. can be selected.

Due to the variety of reclaimed water, complex components and fluctuations in water quality, the process selection and design of the reuse system is particularly important. The rational design of pretreatment will affect the stability and treatment effect of the whole system.

System composition

Description of reclaimed water reuse treatment system: Depending on the water quality, the pretreatment system may be separate or a combination of two or more processes. The same goes for deep processing systems.