An integrated device for sewage regeneration and treatment and its operating method

Abstract

The invention discloses an integrated sewage regeneration treatment device and an operation method. The device is formed by connection of a pre-hypoxic tank, an anaerobic tank and two composite membrane tanks, and the automatic nitrification liquid reflux is realized through alternate operation of hypoxic reactions and aerobic reactions. A continuous flow and an intermittent flow are integrated in one system, and composite membrane biological reactions are adopted, so that the continuous operation of the system is guaranteed, and the treatment effect and the stability of the system are also improved. The black washing is simple, the normal operation of the system is not affected, and the device is simple in operation method, compact in equipment, high in pollutant removal efficiency, applicable to treatment and reuse of sewage of scattered communities and villages and other sewage in small water quantities and also applicable to treatment and reuse of nitrogenous industrial wastewater.

Description

Technical field [0001] The invention relates to the field of sewage (waste) water treatment, in particular to an integrated device and operation method for sewage regeneration treatment. Background technique [0002] my country's water resources are lacking, and the per capita water resources are only 1 / 4 of the world average. Coupled with extensive water pollution, my country's economic development has been seriously affected. In order to improve and alleviate the water crisis, my country has invested a large amount of money in the establishment of sewage treatment plants to improve the environment, and the sewage treatment rate has been continuously expanded. However, for scattered settlements, remote concentrated residential areas and industrial enterprises, the drainage system is usually not covered by the urban municipal pipe network. If the sewage pipe network is laid to centrally treat the sewage, the cost is very high. If this type of wastewater is discharged directly, i...

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Problems solved by technology

[0003] However, there is no good method for sewage (waste) water treatment and reuse technology in scattered settlements in my country. At present, some simple forms of sewage treatment are mainly used, such as anaerobic digesters, artificial wetland treatment technology, and underground soil capillary infiltration. method, stabilization pond, etc.

The removal efficiency of these methods for COD, nitrogen and phosphorus is not high, especially nitrogen and phosphorus are difficult to meet the discharge standards, let alone regenerated and reused

Moreover, if these treatment methods are not well managed, it is easy to cause secondary pollution and lose the treatment effect.

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