A method and device for treating high-concentration comprehensive urban sewage

An urban sewage, high-concentration technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Phosphorus release and other problems, to reduce investment, improve phosphorus removal effect, and simple process

Active Publication Date: 2018-01-16
THUNIP CORP LTD
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  • Abstract
  • Description
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to solve the problem that it is impossible to design a hydrolytic acidification tank with a long residence time in areas with tight land occupation, and to solve the problem that the biodegradability of sewage cannot be improved; Oxygen pool affects anaerobic phosphorus release, resulting in low efficiency of biological phosphorus removal

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  • A method and device for treating high-concentration comprehensive urban sewage

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] The invention provides a method for processing high-concentration comprehensive urban sewage, the method comprising the steps of:

[0029] S1. After the sewage from the grit chamber enters the hydrolytic acidification tank for hydrolytic acidification treatment, a mixed solution is obtained;

[0030] S2, performing solid-liquid separa...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a method and device for treating high-concentration comprehensive urban sewage. The invention provides a method for treating high-concentration comprehensive urban sewage. The sewage is entered into a hydrolysis acidification tank for treatment to obtain a mixed solution; The settling tank improves the effect of hydrolysis and acidification; the supernatant enters the anaerobic tank through the catchment channel for subsequent treatment; the sludge is returned to the hydrolysis and acidification tank to obtain VFA organic matter to provide carbon sources for the anoxic tank, and after hydrolysis and acidification The sludge is sent to the follow-up sludge treatment system for treatment; the sludge treated in the secondary settling tank is diverted through the external return sludge pipe with a valve, and the opening of the valve is flexibly adjusted according to the water quality to improve the phosphorus removal effect ; The VFA organic matter obtained from the hydrolytic acidification tank is sent to the anaerobic, anoxic and aerobic tanks respectively along with the supernatant to carry out the nitrogen and phosphorus removal process.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method and device for treating high-concentration comprehensive urban sewage, in particular to a high-efficiency treatment that can improve the effects of sewage hydrolysis and acidification and denitrification and phosphorus removal, has a simple process flow, and reduces investment costs. A method and device for integrating concentration of urban sewage. Background technique [0002] At present, the country's discharge standards for urban sewage plants are becoming increasingly stringent, and higher requirements have been put forward for the removal of organic matter and nitrogen and phosphorus removal. On the one hand, some sewage plants have low carbon sources in the influent. To achieve the effect, it is necessary to supplement the carbon source to the sewage. On the other hand, the influent of many urban sewage treatment plants contains a large amount of refract...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 周丽颖李星文王金江张平葛志强
Owner THUNIP CORP LTD
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