Combined pretreatment system and treatment method

Abstract

The embodiment of the invention provides a combined pretreatment system and a treatment method, and belongs to the technical field of sewage treatment. The combined pretreatment system comprises a coarse screen well, an adjusting tank, a fine screen well and a rotational flow grit chamber, the coarse screen well is used for removing impurities and floating objects in sewage, and the coarse screen well is communicated with the adjusting tank; the regulating tank is used for regulating the water quantity and the water quality of sewage, the regulating tank is communicated with the fine screen well, the fine screen well is used for removing fine impurities and floating objects in the sewage, the water outlet end of the fine screen well is connected with the water inlet end of the rotational flow grit chamber, and the rotational flow grit chamber is used for settling grit in the sewage; at least two of the coarse screen well, the adjusting tank, the fine screen well and the rotational flow grit chamber are distributed at intervals in the vertical direction, and the combined pretreatment system further comprises a power assembly which is used for achieving transmission of sewage in the vertical direction. According to the combined pretreatment system, the spatial layout is more reasonable, and the occupied area of the combined pretreatment system is saved.

Description

technical field [0001] The present application relates to the technical field of sewage treatment, and in particular, to a combined pretreatment system and a treatment method. Background technique [0002] The pretreatment unit of the sewage treatment plant is a treatment facility set up according to the water quality requirements of the subsequent treatment process before the sewage enters the traditional sedimentation and biological treatment. The pretreatment unit is the throat of the sewage treatment plant. At present, the existing pretreatment units are all scattered and set up separately, which are usually suitable for the design of water plants with large scale and large planned area of ​​water plants; For water plants with poor conditions, the pretreatment units are constructed in a decentralized manner, which leads to problems of high cost and crowded layout of the water plants. SUMMARY OF THE INVENTION [0003] The embodiments of the present application provide ...

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Problems solved by technology

At present, the existing pretreatment units are constructed separately and set up separately, which is usually suitable for the design of water plants with large scale and large planning area of ​​water plants; For water plants with poor conditions, the pretreatment units are constructed in a decentralized manner, and there are problems of high cost and crowded water plants

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