Horizontal well sewage treatment plant and method thereof

Abstract

The invention relates to a deep well sewage aeration technology, an air floatation separation technology and equipment of the technologies, and concretely relates to a horizontal well sewage treatment plant and a method thereof. The horizontal well sewage treatment plant which comprises a total tube of compressed air, branch tubes of the compressed air, an extraneous sewage pipeline, diffuser tubes, a sewage pipeline, exhaust pipelines, a sludge pump, a sedimentation tank, backflow sludge pipelines, a mixed liquid pipeline, and deep wells is formed by an anaerobic zone, an anoxic zone, an aerobic zone, and a backflow apparatus. The method comprises the following steps: leading extraneous sewage to a left-most deep well in the anaerobic zone, carrying out full oxygen charging and mixing on the compressed air and the backflow sludge in the anaerobic zone and the anoxic zone, going through the aerobic zone to the sedimentation tank for solid-liquid separation, settling the sludge to the bottom of the tank with the sedimentation tank, allowing a residual liquid to flow out of an outlet pipeline, and allowing the sludge in the sedimentation tank to back to a fist deep well and to be mixed with the compressed air by going through the backflow sludge pipelines at the bottom of the sludge pump with the sludge pump. The horizontal well sewage treatment plant has the advantages of high oxygen conversion rate, simple structure, high efficiency, and low cost.

Description

[technical field] [0001] The patent of the invention relates to a sewage aeration process, an air flotation separation process and equipment thereof, specifically a horizontal well sewage treatment device and method. [Background technique] [0002] Aeration refers to the process of forcibly transferring the oxygen in the air to the liquid, the purpose of which is to obtain sufficient dissolved oxygen. In addition, aeration also has the purpose of preventing the suspension of the tank from sinking and strengthening the contact between the organic matter in the tank, microorganisms and dissolved oxygen. In this way, the microorganisms in the pool can oxidize and decompose the organic matter in the sewage under the condition of sufficient dissolved oxygen. Water is in contact with gas to dissolve oxygen or dissipate dissolved gas and volatile substances in water. There are three ways to achieve it: (1) spray the liquid in the air, such as a biological filter; (2) diffuse the ...

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Problems solved by technology

[0004] Domestic invention patent CN101033100A discloses a compound flow biological aerated filter treatment device. The device is equipped with a water inlet guide pipe and a compressed air pipe in the tank body. Entering from top to bottom, this design based on power demand makes it impossible to exchange oxygen and pre-mix sewage with compressed air, and cannot achieve good results

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