Method for treating short-flow water with sedimentation and air-floating coupling as core

A technology of sedimentation air flotation and water treatment, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. major problems, to achieve the effect of good effluent quality, low infrastructure costs, and low operating costs

Inactive Publication Date: 2014-01-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a short-process water treatment method centered on precipitation-air flotation coupling to solve the problems of long process flow, large floor space, high infrastructure cost and high operating cost in the existing water purification process

Method used

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  • Method for treating short-flow water with sedimentation and air-floating coupling as core
  • Method for treating short-flow water with sedimentation and air-floating coupling as core

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specific Embodiment approach 1

[0022] Specific implementation mode 1: In this implementation mode, the short-process water treatment method centered on the coupling of sedimentation and air flotation is carried out according to the following steps:

[0023] 1. Add coagulant to the raw water, mix it, and carry out flocculation reaction in the flocculation tank;

[0024] 2. Then enter the sedimentation-air flotation coupling tank for mud-water separation;

[0025] Third, carry out advanced process treatment;

[0026] 4. Disinfection is carried out at last, that is, the water treatment is completed.

[0027] The beneficial effect of this implementation mode:

[0028] 1. The technical solution (process flow) of this embodiment is: coagulation-sedimentation-air flotation-advanced treatment-disinfection, that is, adding coagulant to the raw water for mixing, and after flocculation reaction in the flocculation tank, enter the sedimentation-air The floating coupling tank is used for mud-water separation, then un...

specific Embodiment approach 2

[0034] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the coagulant in step 1 is polyaluminum chloride, polyferric chloride, aluminum sulfate or polyaluminum ferric chloride. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the flocculation tank described in step 1 is a grid flocculation tank, a folded plate flocculation tank or a mechanical flocculation tank. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for treating short-flow water with sedimentation and air-floating coupling as a core, and relates to short-flow water treatment methods with sedimentation-air-floating coupling as cores and with multiple water purification technologies integrated. The method aims to solve the problem that an existing water purification technological process is long, the occupied area is large, capital construction cost is high, and operating cost is high. The method comprises the first step of adding and mixing coagulants and carrying out a flocculation reaction, the second step of carrying out mud and water separation, the third step of carrying out advanced process treatment and the fourth step of carrying out disinfection. A filter pool does not need to be arranged in the method, and the method is short in technological process, low in capital construction cost, convenient to operate and manage, low in operating cost and good in output water quality. The method is mainly used for treating city life drinking water.

Description

technical field [0001] The present invention relates to a short-process water treatment method with precipitation-air flotation coupling as the core and integrating various water purification technologies, and specifically relates to a method of using precipitation-air flotation coupling technology to replace the filter tank filtration technology in the traditional water treatment process The short-flow water treatment method belongs to the category of urban domestic drinking water treatment. Background technique [0002] In order to prevent the prevalence of water-borne bacterial infectious diseases (such as cholera, dysentery, typhoid, etc.) and improve the sanitation and safety of drinking water in cities, at the beginning of the 20th century, the water treatment technology industry developed coagulation-sedimentation-filtration-chlorine disinfection water purification The process is the first generation of drinking water purification process. In the 1970s, due to water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 马军邹景张翔时玉龙
Owner HARBIN INST OF TECH
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