Treatment of industrial cooling wastewater:
1, physical method: including deposition, overworry, adsorption, air float and so on. The key of these methods is to physically remove suspended solids, oil and other residues in wastewater. Among them, deposition and filtration are common treatment methods, which can effectively remove suspended solids and impurities of relatively large particles in the wastewater.
2, chemical method: including synthesis, REDOX reaction, chemical precipitation, etc. This type of method is mainly to remove harmful substances in wastewater through chemical changes. For example, to adjust the pH of wastewater according to acid-base neutralization reaction, so that it can meet environmental standards; Removal of organic compounds from wastewater by chemical reaction; Removal of metal ions from wastewater by chemical precipitation. This is also one of the common solutions for industrial production cooling wastewater.
3, biological method: including activated sludge, biofilm method, etc. The key to these methods is the use of microbial metabolism to oxidize organic matter in wastewater into harmless substances. Activated sludge is a commonly used biological treatment method, and the activated sludge method can be added to the wastewater, so that the microorganisms in it adsorb and dissolve the organic compounds in the wastewater.
4, composition treatment method: the physical method, chemical method and biological method are combined to produce composition process, and achieve the in-depth treatment and reuse of wastewater. For example, the physical method is first used to remove suspended solids and oil stains, and then the chemical method is used to adjust the pH value, remove metal ions, and finally the biological method is used to in-depth treatment, so that it meets environmental protection standards or water reuse standards.
Industrial cooling wastewater treatment is an important part of environmental protection and sustainable use of network resources. Only through continuous technological innovation and awareness can we really actively respond to this test and complete a win-win situation between economic development and ecological environmental protection.
