Low-carbon sewage enhanced phosphorus removal device and sewage treatment system comprising same

A sewage treatment system and sewage technology, applied in water/sludge/sewage treatment, magnetic field/electric field water/sewage treatment, water/sewage multi-stage treatment, etc. It can reduce the dependence on carbon sources, improve stability, and improve the ability to remove total phosphorus.

CN112939331APending Publication Date: 2021-06-11GUANGDONG ENG TECH INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-06-11

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Abstract

The invention relates to the technical field of sewage treatment, and discloses a low-carbon sewage enhanced phosphorus removal device and a sewage treatment system comprising the same. The device comprises a carbon source tank and a two-phase anaerobic phosphorus removal tank, wherein the carbon source tank is connected with the two-phase anaerobic phosphorus removal tank to supply a carbon source to the two-phase anaerobic phosphorus removal tank; the two-phase anaerobic phosphorus removal tank is connected with a sludge outlet of a sedimentation tank so as to receive sludge discharged by the sedimentation tank; the two-phase anaerobic phosphorus removal tank is connected with an anaerobic tank, so that sludge treated by the two-phase anaerobic phosphorus removal tank flows back to the anaerobic tank. According to the invention, under the condition of low carbon source in fed water, the supplementary carbon source can be effectively and fully utilized by high-concentration phosphorus removal bacteria in the two-phase anaerobic phosphorus removal tank, and the total phosphorus removal capacity of the system is improved.
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Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a low-carbon sewage enhanced phosphorus removal device and a sewage treatment system including the same. Background technique

[0002] Commonly used urban sewage treatment processes include Anaerobic-Anoxic-Oxic (A / A / O) treatment process and its deformation modification process, which have shown good phosphorus removal performance in actual projects. The technical key of the A / A / O treatment process is that there must be enough organic carbon sources in the sewage under anaerobic conditions to ensure that the phosphorus accumulating bacteria can achieve a good phosphorus release effect and reserve a sufficient amount of polyhydroxyalkanoate ( polyhydroxyalkanoates, PHA) and poly-β-hydroxybutyrate (poly-β-hydroxybutyrate, PHB) for subsequent excess phosphorus uptake. However, the ratio of carbon to phosphorus in the influent of many existing sewage plants is far from suff...

Examples

Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] The low-carbon sewage enhanced phosphorus removal device of the present invention is applied to a sewage treatment system, especially a sewage treatment system with insufficient carbon source replenishment at the water inlet, which may be an urban sewage treatment system. Wherein, the sewage treatment system includes at least an anaerobic tank 1 and a sedimentation tank 4 , the anaerobic tank 1 is provided with a water inlet, and the sedimentation tank 4 is provided with a water outlet 41 and a sludge discharge outlet 42 .

[0024] Such as figure 1 As shown, a low-carbon sewage enhanced phosphorus removal device in a preferred embodiment of the embodiment of the pr...