As a large water user, chemical plants usually use millions of cubic meters of fresh water annually, and have a low water reuse rate. At the same time, they discharge millions of cubic meters of sewage, which not only wastes a lot of water resources, but also causes environmental pollution and water resources. The shortage has threatened the production of these large industrial water users. In order to maintain the sustainable development of the enterprise and reduce the waste of water resources, reduce production costs, and improve the economic and social benefits of the enterprise. Need to carry out in-depth treatment of chemical waste water (tertiary treatment), as a make-up water for circulating water or make up water for power desalination, to achieve wastewater reuse.

Since impurities in water are mainly suspended particles and fine wool fibers, the principle of mechanical filtration is used to remove impurities using microporous filtration technology. PLC or time relay controls the working condition of the filter equipment, realizes automatic backwashing and automatic operation, lifts the water pump to provide the water head required by the filter, and the effluent is directly introduced into the production system.

Analysis of main features:
1. The composition of chemical wastewater is complex, and the reaction raw materials are often solvent substances or compounds with a ring structure, which increases the difficulty of wastewater treatment;
2. The waste water contains a lot of pollutants, mainly due to incomplete reaction of raw materials and the use of large amounts of solvents in raw materials or production.
3. There are many toxic and harmful substances, and there are many organic pollutants in the fine chemical wastewater that are toxic and harmful to microorganisms, such as halogen compounds, nitro compounds, dispersants or surfactants with bactericidal effect;
4. There are many bio-refractory substances, low BOD/COD, and poor biodegradability;

nature:
The wastewater produced during the production of chemical products is characterized by large emissions, high toxicity, high organic matter concentration, high salt content, high color, high content of refractory compounds, and difficulty in treatment, but at the same time, the wastewater also contains many available As a high-tech technology, membrane technology plays an important role in the production and processing of chemical industry, energy saving and clean production.