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Sewage treatment method and device

A sewage treatment method and sewage treatment device technology, applied in the direction of biological water/sewage treatment, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of reducing the total nitrogen content of sewage, and achieve the reduction of nitrogen content amount, the effect of reducing the impact of

Inactive Publication Date: 2019-11-12
POWERCHINA WATER ENVIRONMENT GOVERANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a sewage treatment method and device to solve the technical problem of how to reduce the total nitrogen content in sewage existing in the prior art

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Embodiment Construction

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] Please refer to figure 1 , figure 1 It is a schematic flow chart of a sewage treatment method provided by an embodiment of the present invention. The first aspect of the embodiments of the present invention provides a sewage treatment method, the sewage treatment method, comprising:

[0052] S1: Adjust the pH of the sewage to be treated.

[0053] In this embodiment, the sewage to be treated is pretreated by adjusting the pH, so as to reduce the influence of the acid-base substances in the sewage to be treated on the multi-stage biological oxidation treatm...

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Abstract

The invention provides sewage treatment method and device. The sewage treatment method comprises the following steps: adjusting the pH value of to-be-treated sewage; carrying out precipitation treatment on the sewage after the pH value adjustment; carrying out anaerobic oxidation on the sewage after precipitation treatment; carrying out aerobic oxidation on the sewage after the anaerobic oxidation; detecting the nitrogen content of the to-be-treated sewage subjected to aerobic oxidation, and if the nitrogen content of the sewage after the aerobic oxidation is not greater than a preset nitrogencontent, determining that sewage treatment is completed; and if the nitrogen content of the sewage after the aerobic oxidation is greater than the preset nitrogen content, carrying out secondary anaerobic oxidation and aerobic oxidation on the sewage subjected to aerobic oxidation. The sewage treatment method and device can effectively reduce the total nitrogen content in the sewage.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and more specifically relates to a sewage treatment method and device. Background technique [0002] In the process of urban industrialization, some enterprises discharge wastewater into rivers, especially copper, zinc, nickel and other heavy metals in the sewage discharged by some industrial and mining enterprises, resulting in excessive heavy metals in river sediment. On the other hand, the sneak discharge of urban domestic sewage leads to the existence of a large amount of organic matter in the sediment, which has a high content of ammonia nitrogen. During the process of river dredging sediment treatment, sewage will be produced. There are a large amount of heavy metal ions, suspended solids, and ammonia nitrogen in the sewage, and the pH (PH, Pondus Hydrogeni) of the sewage fluctuates greatly. Direct discharge will pollute the environment. The existing sewage treatment method is to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/52C02F1/66C02F3/302C02F9/00C02F2001/007
Inventor 陈惠明辜晓原余艳鸽郑茂盛李金波邱礼城
Owner POWERCHINA WATER ENVIRONMENT GOVERANCE