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Municipal sewage treatment system

A technology for treating system and municipal sewage, applied in biological water/sewage treatment, water/sludge/sewage treatment, biological sludge treatment, etc., can solve the problem of high cost of electric heating in the construction of thermal insulation plants and the impact on aerobic activated sludge microorganisms Normal activities and other problems, to achieve the effect of not easy to aerate the dead angle, increase the aeration range, and increase the concentration

Active Publication Date: 2020-04-21
SHANDONG HUALI WATER SUPPLY EQUIP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a municipal sewage treatment system to solve the problem in the prior art that the temperature of the aeration tank is too low in winter to affect the normal activities of aerobic activated sludge microorganisms, and the construction of thermal insulation workshops and the high cost of electric heating

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  • Municipal sewage treatment system
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Embodiment Construction

[0037] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. 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.

[0038] Such as figure 1 As shown, the invention provides a kind of industrial sewage treatment system, comprising:

[0039] Pre-sedimentation tank;

[0040] The aeration tank 1 is connected with the pre-sedimentation tank, and the aeration tank 1 is equipped with an aeration device that can be lifted and rotated;

[0041] The sedimentation tank 2, the sedimentation tank 2 is connected with the...

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Abstract

The embodiment of the invention discloses a municipal sewage treatment system, which comprises a pre-sedimentation tank; an aeration tank connected with the pre-sedimentation tank, wherein a liftableand rotatable aeration device is arranged in the aeration tank; a sedimentation tank connected with the aeration tank; a sludge treatment unit, wherein the sludge treatment unit comprises a sludge circulating pipeline for enabling most active sludge in the sedimentation tank to reflux into the aeration tank and a sludge discharging pipeline for discharging the residual sludge in the sedimentationtank; an anaerobic fermentation tank for receiving the sludge of the pre-sedimentation tank and the sludge discharge pipeline and carrying out anaerobic fermentation to generate biogas; and a heat preservation and heating unit for supplying the heat generated by biogas combustion to the aeration tank so as to heat. According to the embodiment of the invention, the residual sludge in the sedimentation tank is discharged into the anaerobic fermentation tank and is subjected to anaerobic fermentation to generate biogas, and the aeration tank is heated in winter by using the biogas as the heatingenergy source, so that the influence on the activity of microorganisms by the too low temperature in the aeration tank is avoided, and the secondary utilization of the sludge is realized.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of sewage treatment, and in particular to a municipal sewage treatment system. Background technique [0002] Municipal sewage is the general term for urban sewage, and urban sewage includes domestic sewage and industrial sewage. For the discharge of industrial sewage, the state has formulated relevant standards, requiring enterprises that produce a large amount of sewage to have sewage treatment capabilities, and discharge can only be carried out after reaching the discharge standard. ; But there is no relevant standard for domestic water; domestic sewage is mainly processed by sewage treatment plants; because domestic sewage contains a large amount of organic matter, activated sludge method is generally used in the prior art for processing. [0003] The core of the activated sludge method lies in the aeration tank and the sedimentation tank. The sewage mixed with sludge enters the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/20C02F7/00C02F11/04
CPCC02F3/1284C02F3/205C02F11/04C02F2301/106Y02W10/10
Inventor 代西
Owner SHANDONG HUALI WATER SUPPLY EQUIP CO LTD
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