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Sewage treatment method

A sewage treatment method and sewage technology, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The problem of poor adaptability to shock loads, etc., achieves the effect of small footprint, easy management, and strong adaptability

Inactive Publication Date: 2014-06-04
李建国
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  • Summary
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Problems solved by technology

[0003] In order to overcome the problems existing in existing sewage treatment methods such as poor adaptability to impact load, prone to sludge bulking, large area of ​​treatment structures, high capital investment and operating costs, and complex management, it is proposed to have strong adaptability to impact load, A Wastewater Treatment Method Without Sludge Bulking

Method used

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Embodiment Construction

[0014] A sewage treatment method, the specific steps are: input the sewage into the mechanical grid, the sewage passing through the mechanical grid enters the water collection and adjustment tank, and then input the sewage in the water collection and adjustment tank to the sewage cooling tower, and the water cooled by the cooling tower Sewage is input into the coagulation sedimentation tank, and the coagulation-sedimented sewage enters the CASS tank, and the sewage treated by the CASS tank passes through the biological filter tank, and finally the treated water is obtained. The CASS pool is connected with a fan, and when the sewage enters the CASS pool, the fan blows the air to the CASS pool. The sludge in the CASS tank is subjected to sludge reflux treatment, and then the sludge in the CASS tank is input into the sludge tank, and the upper layer of clear water in the sludge tank is returned to the CASS tank. The sludge in the coagulation sedimentation tank is input to the slu...

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Abstract

The invention belongs to the technical field of environment protection, and in particular discloses a sewage treatment method which specifically comprises the steps of inputting sewage into a mechanical grid, feeding the sewage passing through the mechanical grid into a regulating reservoir, further inputting the sewage in the regulating reservoir into a sewage cooling tower, inputting the sewage which is cooled by the cooling tower into a coagulative precipitation tank, feeding the sewage subjected to coagulative precipitation into a CASS (Cyclic Activated Sludge System) tank, and passing the sewage which is treated by the CASS tank through a biofilter so as to finally obtain treated water. The sewage treatment method has the advantages that the sewage treatment method is high in impact load adaptive capacity, not easy to have sludge bulking, small in floor space and simple and convenient to manage.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a sewage treatment method. Background technique [0002] The existing sewage treatment methods include the activated sludge method, which first appeared in England in the early 20th century. It has a history of nearly a hundred years and is one of the most widely used sewage treatment technologies. This method has been developed in Manchester, England since 1914. It has a history of more than 80 years since the sweat test plant was built in the city. At present, it has become the main body of organic wastewater biological treatment, but there are still some shortcomings that cannot be ignored: poor adaptability to impact loads, sludge swelling easily, treatment of structures Large area, high infrastructure investment and operating costs, complex management, etc. There are also existing patents for improving sewage treatment methods. For example, the patent applic...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 李建国
Owner 李建国
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