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Sewage pretreatment device and pretreatment method

A sewage pretreatment and sewage technology, which is applied in the direction of water/sewage treatment, water/sewage multi-stage treatment, water/sewage treatment equipment, etc., can solve the problems of low treatment efficiency and long time-consuming sewage pretreatment, and reduce swirling flow Influence, improve the flocculation effect, improve the effect of work efficiency

Active Publication Date: 2022-01-21
杭州五洲市政园林绿化工程有限公司
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Problems solved by technology

In the existing sewage pretreatment process, because the coagulation process needs to stir and mix sewage and coagulant, and the stirring process will affect the sand-water separation process, sand-water separation and coagulation are treated separately, resulting in a long time-consuming sewage pretreatment , low processing efficiency

Method used

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  • Sewage pretreatment device and pretreatment method
  • Sewage pretreatment device and pretreatment method

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings of the description and through specific implementation methods: the core content of the present invention is to combine the flocculation and sedimentation steps, and simultaneously take place in the settling tank 200, and it should be noted that other In the field of direct sedimentation and stratification after flocculation, it only corresponds to the flocculation step of the present invention, while the present invention is applied in the field of sewage treatment, and its characteristic is that the particle size is uneven. The original process is to completely stratify the large particles through sedimentation first. , and then carry out flocculation and stratification, and if flocculation and sedimentation are to be carried out at the same time, there will be a problem. The material with large particle density will stratify quickly, and flocculation needs reac...

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Abstract

The invention relates to the technical field of sewage pretreatment, and discloses a sewage pretreatment device and a pretreatment method, which have the following effects: 1, a flocculation process and a sedimentation process are combined and are simultaneously carried out in a sedimentation tank, so that the working efficiency of the whole system is improved; 2, two sewage inlets are arranged, different positions for flocculation and sedimentation are provided through the height difference, meanwhile, the movement amount of particulate matter in the vertical direction is blocked through a baffle, time is provided for flocculation and sedimentation layering, and the situation that sediment is excessively bonded, and the damping amount is too large due to the fact that flocculation and sedimentation are carried out at the same time is avoided; 3, a rotational flow opposite to the sedimentation is generated on the spiral feeder, so that the influence of the rotational flow generated by stirring of the spiral feeder in the flocculation process is reduced, and the flocculation effect is improved.

Description

technical field [0001] The invention relates to the technical field of sewage pretreatment, in particular to a sewage pretreatment device and a pretreatment method. Background technique [0002] For centralized urban sewage treatment plants and decentralized sewage treatment plants within pollution sources, pretreatment mainly includes treatment facilities such as grilles, screens, grit chambers, and sand-water separators. For some industrial wastewater before entering the centralized or decentralized sewage treatment plant, in addition to the above-mentioned general pretreatment, water quality and quantity adjustment treatment and other special pretreatments are required, such as neutralization, hair removal, pretreatment, etc. Shen, pre-aeration, etc. Sewage pretreatment technologies mainly include coagulation, precipitation, etc. Among them, polyaluminum chloride is an inorganic polymer coagulant, and the molecular weight produced is relatively large due to the bridging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/001C02F2001/007C02F1/5281C02F1/38C02F2201/002C02F2201/004C02F2303/14
Inventor 盛铭
Owner 杭州五洲市政园林绿化工程有限公司
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