Biological sewage treatment system capable of simulating natural environment

Abstract

The invention relates to a biological sewage treatment system capable of simulating natural environment, which simulates a completely closed and odorless botanical garden bionic natural ecological environment, and comprises four stages of treatment processes which are connected in sequence, in the first-stage treatment, SS and part of COD are removed through primary sedimentation, grilling and flat membrane microfiltration; a biological omentum biological treatment tank (21) is mounted in the second-stage treatment to remove COD, BOD, SS and ammonia nitrogen; a matrix-microorganism-plant composite ecological tank (31) is installed in the third-stage treatment to remove COD, BOD, total P, heavy metals and nitrate nitrogen; an adsorption-disinfection-sterilization treatment tank (41) is installed in the fourth-stage treatment, catalyst activated carbon (411) and molecular hypochlorous acid water are adopted for sterilization and disinfection, and COD and nitrate nitrogen are further removed; the system is compact in structure, remarkably reduces the occupied area, is low in construction investment, is low in operation cost, can adapt to sewage with a relatively high pollutant concentration, can be constructed in an urban center, and effectively achieves the energy-saving, environment-friendly and sustainable development of sewage treatment in a region lack of water resources.

Description

technical field [0001] The invention relates to a multi-stage treatment technology or biological treatment technology of waste water or sewage, especially a biological sewage treatment system for simulating natural environment. Background technique [0002] All kinds of waste water have a large amount of discharge, complex composition, some with very high concentration, dark color, and high content of toxic and harmful substances, especially organic substances with benzene rings, aniline, nitrobenzene, phenol, and anthraquinone. Generally, adsorption and filtration are used first. , coagulation, catalytic oxidation, etc. for pretreatment, the biodegradability of the drainage is not high <0.35, and cannot directly enter the aeration tank. [0003] Environmental biology is a branch of environmental science, which studies the law and mechanism of the interaction between organisms and the environment interfered by human beings. concept”, “environmental protection and sustain...

AI Technical Summary

Problems solved by technology

The natural biological treatment method is simple in process, low in cost and high in efficiency. It is a sewage treatment method in line with ecological principles; but it is easily affected by natural conditions and occupies a large area

[0011] In the existing technology, traditional sewage treatment plants have many defects. Generally, traditional sewage treatment plants are located in large-scale production-concentrated cement buildings outside the city limits. The sewage treatment plants occupy a large area and have many auxiliary facilities. The sewage treatment facilities are generally unsightly, The smell is strong and does not have the function of ecological services; in addition, centralized treatment facilities lead sewage from the actual place of production, residents and commercial areas in the city to the treatment plant, which also makes the reuse of sewage have to rely on capital-intensive support and needs to be built Auxiliary facilities such as a large number of pipeline networks

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