Sewage treatment

     How to deal with chemical wastewater? I will take you to find out today. Industrial chemical wastewater treatment projects often contain a lot of toxic substances in wastewater. Why use biological treatment to degrade pollutants? To purify pollutants in water, two methods are needed:-separation; second, degradation. Separation is obviously to separate the pollutants from the water, and the material that can be separated must be solid or gaseous to be separated from the liquid. The pollutants separated from the water through the solid state are usually some solid suspended solids, colloidal substances, and Some metal ions that can be precipitated by chemical reactions; gaseous separated substances such as volatile substances or substances saturated in water, these substances naturally overflow from the water after forming gas. A typical treatment method is high ammonia nitrogen wastewater by blowing off Technology for denitrification. In addition to solid and gaseous substances, especially industrial and chemical wastewater treatment, most of the pollutants remain in the water.

Such pollutants are dissolved in water and are not easily separated. They can only be formed by changing the form and structure to form a solid or The gaseous substances are separated out or decomposed into harmless substances such as water, carbon dioxide and so on. To change the form and structure of pollutants, which are mainly organic matter, can be carried out through chemical reactions or biodegradation. Chemical reactions can transform the structure of organic pollutants, but its transformation is minimal. The transformed product and the body are in nature and toxicity. Basically it is similar. The biological effects are different. The biological enzymes that biodegrade have high activity, rapid response, many types and quantities, and the biological enzymes produced by different organisms are different, and microorganisms are everywhere in the ecological environment. The sewage biological treatment system belongs to a small ecosystem. Most substances such as organic matter and nitrogen can be rapidly decomposed and reacted under the catalysis of biological enzymes, so biological degradation is more important. With the diversity of the microbial ecosystem, there are naturally some microorganisms that can tolerate higher toxicity. For toxic organic wastewater, aerobic microorganisms basically cannot degrade, but most of them can still be decomposed by anaerobic microorganisms, depending on the microorganisms Toxicity threshold. In addition, high-salt wastewater in the I industry can be treated with salt-tolerant bacteria, and high-nitrogen wastewater can be treated by adding anammox bacteria. These are all obligate bacteria, so they can be targeted according to different water quality wastewater. deal with. Compared with the operating cost of the chemical reaction method and the biological method, the biological method still has a greater advantage. The advantage of the biological treatment method is that it does not need to add a large amount of chemical agents. At the same time, the biological treatment method does not produce a large amount of chemical sludge. Secondary pollution and sludge disposal costs. Since the water quality characteristics of industrial chemical wastewater are relatively prominent, and basically have the characteristics of being difficult to biodegrade, the optimization and domestication of anaerobic strains in the treatment of refractory organic wastewater is extremely important, which affects the treatment of biological treatment facilities. An important factor in effectiveness. During the operation of the anaerobic reactor, it is equally important to control and reduce sludge loss and ensure the concentration of anaerobic sludge. This requires that the internal structure of the anaerobic reactor should be reasonable. After years of research and application in the field of water treatment.

Daoyang Environmental Protection has developed a variety of technologies to optimize the structure of anaerobic reactors, including point-to-point water distributors, anaerobic dedicated modular three-phase separators, in design and Strictly ensure that all indicators and parameters meet the specifications and meet the requirements of actual operation during debugging. All in all, although wastewater in industrial chemical wastewater treatment projects is difficult to biodegrade and most of them are toxic to microorganisms, biological treatment technology still occupies a major position in industrial chemical wastewater treatment. In the biological treatment of chemical wastewater in the I industry, the goal of achieving stability and effluent compliance is to control many aspects, including the selection of suitable treatment processes, the selection of bacterial species, the structural design of treatment facilities, and the control methods of operation processes, etc. Wait.

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