In order to achieve the purpose of degrading pollutants in sewage, selecting, cultivating, and combining microbial bacteria with special degradation ability of sewage to form bacterial groups and become special sewage treatment bacteria is one of the most advanced methods in sewage treatment technology at present.
The strains originate from nature, are cultivated and domesticated artificially, and finally return to nature to take on the mission of repairing the nitrogen cycle of water bodies, which conforms to the principles of non-toxicity, pollution-free, no secondary pollution, and harmless to human body. It can effectively remove ammonia nitrogen, BOD, COD, SS, nitrate, sulfate, chroma, odor, toxic substances, compound pollutants, etc., without the need for chemical coagulation and coagulation assistance.
With the high development of human economy in the 21st century, it has also caused serious damage and pollution to the environment and seriously threatened people’s health. Therefore, environmental protection measures to rectify all kinds of pollution are imminent. policy focus. Among them, the degree of water pollution has caused serious ecological imbalance, and nature has lost its original nitrogen cycle self-purification ability due to excessive pollution. Therefore, water treatment is an essential method to restore the natural ecology.
Among the many sewage treatment methods, biological treatment is the most important sewage treatment process in the world because of its simple process, remarkable effect, low cost, pure natural environmental protection, and no secondary pollution. Among them, methods such as biofilm method, biological trickle method, activated sludge method or adding biological agents all use the decomposition ability of organisms to achieve the purpose of purifying water quality. However, most of the current microbial treatment only relies on the action of spontaneous bacteria in wastewater sludge. Because the types of pollution sources in modern industrial sewage are quite complex, and the types of biological bacteria that decompose pollutants are not complete, some should not exist, but unnecessary ones It is too many, often because the number of effective bacteria is insufficient or the decomposition ability of bacteria is not enough, and the ability to degrade pollution is not good, so that the treatment effect is not easy to control, and sometimes it needs to rely on luck, so microbiologists specialize in cultivating microbial strains with specialized degradation of sewage substances for this situation.
Nitrifying bacteria: Nitrifying bacteria are aerobic bacteria, including nitrifying bacteria and nitrifying bacteria. Living in aerobic water or sand layers plays an important role in the nitrogen cycle water purification process. It exists widely in every corner of nature, including air, rivers, sea, and soil. There are thousands of nitrifying bacteria found in biology.
Denitrifying bacteria: Denitrifying bacteria are bacteria that cause denitrification. Most of them are heterotrophic and facultative anaerobic bacteria, such as denitrifying bacteria, Staphylococcus spp. Under the condition of xenon, they use the oxygen in nitric acid to oxidize organic substances to obtain the energy required for their own life activities. Denitrifying bacteria are widely distributed in soil, manure and sewage. Nitrate nitrogen can be converted to nitrogen gas instead of ammonia nitrogen, which is not the exact opposite of nitrifying bacteria. It is mainly used in sewage treatment, such as landscape water treatment, urban inland river treatment, aquaculture treatment, etc. Among them, aquaculture sewage treatment is the most widely used.
Nitrification and denitrification compound strains: compound strains with dual functions of nitrification and denitrification. In the case of increasingly complex sewage treatment environment, it is more and more difficult to use nitrifying or denitrifying strains alone to achieve the balance of bacteria. The proportion of most enterprises’ control of pollution is also inaccurate, resulting in waste or shortage of a large number of bacterial resources, and it is difficult to achieve the ideal sewage treatment effect. The compound bacteria can self-proliferate according to the water quality to achieve the balance of the bacteria, making the sewage treatment work simpler and more efficient.
The zero-sludge sewage treatment technology tackles the pain of sludge discharge in the sewage treatment process in one fell swoop.
With super strong removal of BOD, COD, SS, ammonia nitrogen, phosphorus and other pollutants, the effective rate is over 90-95%. The effluent from the secondary sedimentation tank can directly meet the national first-class A standard or related standards. For dyes and dyeing and finishing wastewater and other wastewater with difficult to eliminate color, it can be directly decolorized when put in. It has a remarkable deodorizing effect, and has a strong ability to eliminate NH3, P, H2S and organic acids.
Super reproduction and adaptability, gene upgrade, can cope with the complex sewage environment in the future. Degradation of synthetic compound pollutants such as pesticides, polychlorinated biphenyls, plasticizers, synthetic detergents, and biosynthetic plastics. Inhibits viruses, germs and parasites. Inhibit algae reproduction, purify water body and water color. Remove heavy metal pollution in domestic sewage, such as zinc, manganese, iron, chromium…etc. Sewage treatment strains are easy to cultivate, reproduce quickly, have strong adaptability to the environment and natural evolution. Once new pollutant compounds appear, they can also gradually generate new enzymes through spontaneous or induction, with new metabolism. function to degrade or convert new compounds.
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Post time: Jul-22-2022