Microbial fermentation device for sewage treatment

Abstract

The invention discloses a microbial fermentation device for sewage treatment, which comprises a sewage tank, a microbial fermentation device, a purified water collection tank and a water pump which are sequentially connected through a pipeline to form a closed loop, and the top end of the sewage tank is connected with the water pump through a pipeline. The bottom end of the sewage tank is connected with the microbial fermentation device through a pipeline, and a water inlet is formed in the upper part of the sewage tank. By combining the sewage tank, the microbial fermentation device, the purified water collection tank, the water pump and other structures, sewage can be effectively fermented, and when one-time fermentation treatment of the sewage cannot meet the requirements of people, water in the purified water collection tank can be pumped into the sewage tank through the water pump for repeated filtration and fermentation until the filtering requirements are met, intercepted organic impurities and other materials can be used as organic fertilizer raw materials after high-temperature fermentation, secondary pollution is avoided, and installation and debugging are convenient.

Description

technical field [0001] The invention relates to the field of biological fermentation, in particular to a microbial fermentation device for sewage treatment. Background technique [0002] Microbial sewage treatment has a wide range of applications. It can be applied to many types of sewage treatment such as petroleum, petrochemical, chemical, metallurgy, machinery, leather, coal gasification, food, brewing, daily chemical, printing and dyeing, pharmaceutical, papermaking and urban sewage, as well as sewage treatment of large areas of water such as rivers and lakes. [0003] Sewage discharged from food factories, flour mills, sugar factories, oil factories, etc. contains rich organic matter, which will be wasted after being treated by existing microbial treatment devices and cannot be reused, thus causing a lot of waste. [0004] For high-concentration organic sewage, since the sewage contains a large amount of feces, impurities and soluble high-concentration organic matter, ...

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Problems solved by technology

[0003] Sewage discharged from food factories, flour mills, sugar factories, oil factories, etc. contains rich organic matter, which will be wasted after being treated by existing microbial treatment devices and cannot be used for secondary use, thus causing a lot of waste

[0004] For high-concentration organic sewage, since the sewage contains a large amount of feces, impurities and soluble high-concentration organic matter, pretreatment + follow-up treatment processes are generally used to treat high-concentration sewage; while traditional pretreatment process equipment usually uses Sediment ponds, solid-liquid separators, biogas digesters, etc., but no matter which process equipment is used, the treatment effect is not comprehensive and ideal

If the sedimentation tank is used as pretreatment, because the sedimentation tank is separated by natural sedimentation, the effect is not ideal, the tank capacity is required to be large, and sediment will be generated, and the sedimented sediment needs to be disposed of separately

[0005] If a biogas digester is used, the residence time is required to be long, the pond capacity is large, and the cost is high, which will generate biogas, which poses a certain safety hazard; while solid-liquid separators usually use extrusion to filter, and the pressure and filter density will directly affect the treatment effect. , and most of the dissolved organic pollutants in the feces after squeezing and filtering enter the filtered sewage, and the concentration of sewage will increase, making subsequent sewage treatment more difficult; the quality of pretreatment is an important factor that directly affects the effect of subsequent biochemical treatment Influencing factors, there are deficiencies in the traditional pretreatment process; and the pretreatment effect is not good, and it will increase the cost and operation cost of subsequent treatment facilities

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