Device and method for treating domestic sewage with denitrification phosphorus removal-membrane aeration biofilm coupled reactor

Abstract

The invention relates to a device and a method for treatment of domestic sewage with a DPR-MABR coupling reactor, and belongs to the field of wastewater treatment. The device comprises a raw water pool, a reaction pool I, a first intermediate water pool, a reaction pool II, a second intermediate water pool and a PLC (Programmable Logical Controller) control box, wherein two different series-connection systems are switched by virtue of the PLC control box, one of the series-connection system is an I-to-II series-connection system, the raw water pool is connected with the bottom of the reaction pool I by virtue of a water inlet pipe, the reaction pool I is connected with the first intermediate water pool by virtue of an I-to-II water outlet pipe, the first intermediate water pool is connected with the top of the reaction pool II by virtue of an I-to-II second water inlet pipe, and treated water is discharged from an I-to-II final water outlet pipe; the other system is an II-to-I series-connection system, the raw water pool is connected with the top of the reaction pool II by virtue of a water inlet pipe, the reaction pool II is connected with the second intermediate water pool by virtue of an II-to-I water outlet pipe, the second intermediate water pool is connected with the top of the reaction pool I, and treated water is discharged from the water outlet pipe. The device and the method have the advantages of high efficiency, energy conservation, stable nitrogen removal and dephosphorization effect and stable sludge reduction.

Description

technical field [0001] The invention relates to a sewage biochemical treatment device and method, belonging to the technical field of sewage biological treatment, in particular to a device and method for denitrification dephosphorization-membrane aeration biofilm coupling reactor biological treatment process, for carbon removal and decarbonization of domestic sewage Nitrogen and phosphorus removal has a good treatment effect. Background technique [0002] At present, most of the sewage treatment plants in our country use the traditional process A 2 O-dominated, affected by many factors such as carbon source, back-mixing, returning nitrifying liquid destroying the anaerobic environment, long and short sludge sludge age conflicts, etc., it is difficult to obtain high-efficiency denitrification and phosphorus removal in the same system at the same time. The C / N value of sewage is low, and the effective removal of nutrients such as nitrogen and phosphorus is severely restricted...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the sewage treatment plants in our country use the traditional process A 2 O-dominated, affected by many factors such as carbon source, back-mixing, returning nitrifying liquid destroying the anaerobic environment, long and short sludge sludge age conflicts, etc., it is difficult to obtain high-efficiency denitrification and phosphorus removal in the same system at the same time. The C / N value of sewage is low, and the effective removal of nutrients such as nitrogen and phosphorus is severely restricted, which adds great difficulty to the standard treatment

In addition, some sewage treatment plants increase the efficiency of denitrification and phosphorus removal by adding a large amount of additional carbon sources, which undoubtedly greatly increases the operating costs of sewage treatment plants, including the disposal costs of excess sludge, causing relatively significant environmental problems

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