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Harbor area sewage treatment method

A sewage treatment method and technology for sewage treatment, which are applied in water/sludge/sewage treatment, water treatment parameter control, chemical instruments and methods, etc. and other problems, to achieve the effect of solving the difficult biochemical treatment of high-salt municipal sewage, low cost and simple cultivation.

Inactive Publication Date: 2018-05-04
江苏省港海环保科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing activated sludge is mostly used for conventional industrial sewage and domestic sewage, but due to the infiltration of seawater in coastal areas, the chloride ion content in the sewage is relatively high. Conventional sludge is not suitable for this kind of high-salt sewage, which has become a problem The first-class problem in the operation of sewage treatment plants in many coastal towns

Method used

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Effect test

Embodiment 1

[0016] Embodiment 1: a kind of harbor area sewage treatment method, comprises the steps:

[0017] Pretreatment: Add shallow sea silt with 2%-4% of the pool volume to the aerobic biochemical pool, then add sewage with 30%-50% of the pool volume and COD of 250-350mg / L, continue aeration, and during the aeration period Add nutrients according to COD, aerate until the degradation rate of COD reaches 45%-50%, stop aeration;

[0018] Split treatment: Take half of the aerated sludge in the aerobic biochemical tank, inject it into the anaerobic biochemical tank, and carry out sealed stirring culture for 10-15 hours;

[0019] Sewage treatment: Inject sewage from the seaport area into the aerobic biochemical pool. When the first injection of sewage reaches 70% of the pool capacity of the aerobic biochemical pool, stop the injection; after 5 hours of aeration treatment in the aerobic biochemical pool, aerobic biochemical 35% of the sewage in the pool is injected into the anaerobic bioch...

Embodiment 2

[0020] Embodiment 2: a kind of harbor area sewage treatment method, comprises the following steps:

[0021] Pretreatment: Add shallow sea silt with 2%-4% of the pool volume to the aerobic biochemical pool, then add sewage with 30%-50% of the pool volume and COD of 250-350mg / L, continue aeration, and during the aeration period Add nutrients according to COD, aerate until the degradation rate of COD reaches 45%-50%, stop aeration; and the dissolved oxygen in the aerobic biochemical pool is 2-3mg / L, adjust COD to 150-250mg / L by adding nutrients .

[0022] Split treatment: Take half of the aerated sludge in the aerobic biochemical tank, inject it into the anaerobic biochemical tank, and carry out sealed stirring culture for 10-15 hours;

[0023] Sewage treatment: Inject sewage from the seaport area into the aerobic biochemical pool. When the first injection of sewage reaches 70% of the pool capacity of the aerobic biochemical pool, stop the injection; after 5 hours of aeration tr...

Embodiment 3

[0024] Embodiment 3: a kind of harbor area sewage treatment method, comprises the following steps:

[0025] Pretreatment: Add shallow sea silt with 2%-4% of the pool volume to the aerobic biochemical pool, then add sewage with 30%-50% of the pool volume and COD of 250-350mg / L, continue aeration, and during the aeration period Add nutrients according to COD, aerate until the degradation rate of COD reaches 45%-50%, stop aeration;

[0026] Split treatment: Take half of the aerated sludge in the aerobic biochemical tank, inject it into the anaerobic biochemical tank, and carry out sealed stirring culture for 10-15 hours; and the sealed stirring culture is 2 hours for every 1 hour of stirring;

[0027] Sewage treatment: Inject sewage from the seaport area into the aerobic biochemical pool. When the first injection of sewage reaches 70% of the pool capacity of the aerobic biochemical pool, stop the injection; after 5 hours of aeration treatment in the aerobic biochemical pool, aero...

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Abstract

The invention discloses a harbor area sewage treatment method. Activated sludge suitable for high salinity sewage treatment in a seaport area through shallow marine sludge is domesticated, and then sewage in a harbor area is treated through the activated sludge. The harbor area sewage treatment method effectively solves a problem that high-salt municipal sewage in a coastal area is difficult to betreated by biochemical treatment, has the characteristics of simple cultivation and lower cost.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment method in a harbor area. Background technique [0002] Nowadays, due to the rapid development of modern industry, the pollution of water resources is becoming more and more serious, and how to effectively treat sewage has been paid more and more attention. The activated sludge method is the main method of sewage biological treatment with activated sludge as the main body. The activated sludge method is to continuously inject air into the sewage, and after a certain period of time, the sludge-like flocs are formed due to the reproduction of aerobic microorganisms; on it, there are microbial groups mainly composed of bacterial micelles, which have strong The ability to adsorb and oxidize organic matter. [0003] Existing activated sludge is mostly used for conventional industrial sewage and domestic sewage, but due to the infiltration of seawater in coastal area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/30C02F2209/08
Inventor 仇万龙仇正旺
Owner 江苏省港海环保科技集团有限公司
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