A kind of treatment method of sewage dephosphorization and denitrification

Abstract

The invention relates to a treatment method for dephosphorizing and denitrifying sewage. The method is characterized by carrying out treatment by combining a physical method and a biological agent, wherein the biological agent comprises the following raw materials in parts by weight: 5-7 parts of paracoccus denitrificans, 5-7 parts of saccharomyces cerevisiae, 4-5 parts of rhodococcus, 4-5 parts of bacillus amyloliquefaciens, 3-4 parts of clostridium papyrosolvens, 3-4 parts of penicillium ochrochloron, 2-3 parts of pseudomonas and 1-2 parts of bacillus cereus. The biological agent contains various microorganisms with excellent capacity of degrading refractory pollutants, is reasonable in compatibility of the strains, has good degrading effects and has a broad application prospect.

Description

technical field [0001] The invention relates to a treatment method for waste water, and specifically provides a treatment method for dephosphorization and denitrification of sewage. Background technique [0002] With the increasing urban population and the continuous development of industry and agriculture, water pollution accidents occur frequently, seriously endangering the health and even life of people and animals. For a long time, the purpose of sewage treatment has focused on the removal of organic matter and suspended solids. With the increase of sewage discharge, especially the widespread use of chemical fertilizers, pesticides, and synthetic detergents, the nitrogen and phosphorus nutrients in sewage have caused environmental pollution. The impact has gradually attracted people's attention. The most prominent impact of the discharge of nitrogen and phosphorus plant trophic pollutants on the water environment is the eutrophication of the water body, which is manifes...

AI Technical Summary

Problems solved by technology

Activated carbon is widely used as an important adsorbent material because of its rich pore structure and huge specific surface area, good chemical stability and strong adsorption capacity, but its cost is high

There are also non-metallic ionic minerals such as attapulgite for adsorption, but natural non-metallic minerals have the following limitations as adsorbents: natural non-metallic minerals have high density and limited specific surface area, and the surface of natural non-metallic minerals is mostly negatively charged. And directly using natural non-metallic powder ore such as clay minerals as the adsorbent will have the problem of difficult separation of solid and liquid after adsorption

From the point of view of the principle of nitrogen and phosphorus removal, some chemical and physical methods can effectively remove nitrogen and phosphorus in sewage, but in general, these two methods are not completely removed, and the biological treatment of nitrogen and phosphorus removal It has the advantages of simultaneously removing C, N, P and low processing cost

Traditional wastewater treatment methods using activated sludge to cultivate domesticated microorganisms can no longer effectively remove these pollutants. These substances have accumulated in the environment for a long time, causing great pollution to the ecological environment on which we live, and affecting human physical and mental health. bring great harm

A considerable number of industrial polluting enterprises in our country would rather be punished than invest in wastewater treatment. Even if there is a sewage treatment plant, the operation is extremely abnormal.