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Ultrahigh dissolved oxygen water treatment method and system for sludge thickening tank

A sludge thickening tank and water treatment system technology, applied in water/sludge/sewage treatment, biological sludge treatment, dehydration/drying/concentrated sludge treatment, etc., can solve the odor caused by phosphorus and affect the surrounding environment, etc. problems, achieve the effects of eliminating odor, reducing energy consumption, and inhibiting anaerobic phosphorus release by phosphorus-accumulating bacteria in sludge thickening tanks

Pending Publication Date: 2021-07-23
南京市市政设计研究院有限责任公司
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  • Claims
  • Application Information

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Problems solved by technology

Due to the long residence time of the sludge in the gravity concentration tank, it is very easy to release phosphorus and produce odor, which affects the surrounding environment

Method used

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  • Ultrahigh dissolved oxygen water treatment method and system for sludge thickening tank
  • Ultrahigh dissolved oxygen water treatment method and system for sludge thickening tank
  • Ultrahigh dissolved oxygen water treatment method and system for sludge thickening tank

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Embodiment Construction

[0025] In order to make the purpose and technical solutions of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the drawings of the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the described embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in c...

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Abstract

The invention provides an ultrahigh dissolved oxygen water treatment method and system for a sludge thickening tank, wherein ultrahigh dissolved oxygen water is fully and uniformly mixed with wet sludge in a sludge inlet pipeline by utilizing a pipeline mixer, so that nanoscale dissolved oxygen is injected into the bottom of the sludge thickening tank together with the sludge through the sludge inlet pipeline; under the condition that no visible bubbles disturb the bottom sludge, the respiratory action of microorganisms in the sludge thickening tank is promoted to digest the sludge, the anaerobic phosphorus release of phosphorus-accumulating bacteria in the sludge thickening tank is inhibited, and the odor is eliminated. The characteristics that the particle size of oxygen bubbles in the ultrahigh dissolved oxygen water is extremely small and the rising speed is extremely low are utilized, and the oxygen mass transfer efficiency of the sludge can reach 85-96%, so that the sludge fully participates in biochemical reaction of microorganisms and bacterial colonies in the tank. Compared with a traditional aerobic digestion mode, the operation energy consumption is reduced by 40% or above, and meanwhile, the treatment time is only 1 / 20 of that of the traditional mode. According to the invention, the discharge amount of dry sludge can be effectively reduced, and the MLVSS of discharged sludge is obviously reduced.

Description

technical field [0001] The present application relates to the technical field of sewage treatment, in particular to a method and system for treating ultra-high dissolved oxygen water used in sludge thickening tanks. Background technique [0002] Sludge thickening is an effective method to reduce the water content and volume of sludge. The sludge concentration tank is usually connected after the sedimentation tank in the sewage treatment system, and the interstitial water of the sludge is reduced by the gravity concentration method, air flotation concentration method or centrifugal concentration method, reducing the water content of the sludge, thickening the sludge, and reducing the sludge concentration. Mud volume to facilitate subsequent dehydration treatment. [0003] However, the interior of the sludge thickening tank in existing sewage treatment projects is usually in an anaerobic state. Under anaerobic conditions, phosphorus accumulating bacteria consume glycogen, hy...

Claims

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Application Information

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IPC IPC(8): C02F11/12C02F11/04
CPCC02F11/12C02F11/04C02F2209/22
Inventor 管凛夏文林王阿华王威孙鹏陈曦孔宇燕强杨小平袁忠伟
Owner 南京市市政设计研究院有限责任公司
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