Graded purification treatment technology for mixed wastewater

A technology for purification and mixed wastewater, applied in the direction of water/sewage multi-stage treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the difficulty of biofilm formation, affect the activity of aerobic bacteria, reduce biological treatment efficiency and sewage Purification degree and other issues, to achieve good ventilation and ventilation effects, improve the degree of sewage purification, and improve the effect of aerobic bacteria activity

Inactive Publication Date: 2019-03-26
朱晓珂
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, when the ordinary biofilm method is used to purify sewage, due to the lack of underwater oxygen, it is difficult to biofilm, which seriously affects the activity of aerobic bacteria, thereby reducing the efficiency of biological treatment and the degree of sewage purification.

Method used

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  • Graded purification treatment technology for mixed wastewater
  • Graded purification treatment technology for mixed wastewater

Examples

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Embodiment 1

[0043] A mixed wastewater classification purification treatment process, comprising the following steps:

[0044] Step 1. Preliminary filtration of the grid, preliminary filtration of some coarse debris in the wastewater;

[0045] Step 2, grit chamber treatment, the sand in the sewage is separated by sedimentation in the grit chamber;

[0046] Step 3, the initial sedimentation tank treatment, on the basis of the grit chamber treatment, the sand in the sewage is further settled and separated;

[0047] Step 4, biological treatment, adopting biological contact oxidation method to carry out sewage treatment;

[0048] Step 5, the second sedimentation, the sewage treated by the biological contact oxidation method is subjected to sedimentation and separation again;

[0049] Step 6, coagulation and precipitation, add coagulant and coagulant to the sewage after the second precipitation, the coagulant is PAC coagulant, the coagulant is polyacrylamide, activated silicic acid, bone glue...

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Abstract

The invention discloses a graded purification treatment technology for mixed wastewater and belongs to the field of wastewater purification technologies. The graded purification treatment technology for the mixed wastewater comprises the following steps: step 1, carrying out primary filtering through a grid; step 2, treating through a grit catcher; step 3, treating through a primary sedimentationtank; step 4, carrying out biological treatment; step 5, carrying out secondary sedimentation; step 6, carrying out coagulation sedimentation; and step 7, filtering and disinfecting. A biological treatment procedure in step 4 is used for treating sewage through a biological contact oxidization method, and a biological membrane-forming bracket used in the biological contact oxidization method is aspecial membrane-forming bracket; the special membrane-forming bracket is provided with a micro-pore, an outer round pipe, an inner round pipe, a second connection pipe, a first connection pipe, a secondary connection pipe, a main connection pipe and a second ventilation hole, so that microorganisms including aerobic bacteria and the like in the water keep breathable; and sufficient oxygen gas inthe water is kept, the activity of the aerobic bacteria is promoted and the membrane-forming quality is enhanced, so that the sewage purification degree is improved.

Description

technical field [0001] The invention relates to the field of waste water purification technology, and more specifically, relates to a mixed waste water graded purification treatment process. Background technique [0002] Sewage treatment process is a combination of process methods for certain sewage treatment. Usually, according to the water quality and quantity of sewage, the economic value of recovery, discharge standards and other social and economic conditions, after analysis and comparison, if necessary, experimental research is also required to determine the treatment process adopted. The general principles are: process reform, pollution reduction, recycling, comprehensive prevention and control, advanced technology, reasonable economy, etc. The mixed wastewater classification purification treatment process includes multi-stage purification treatment, among which biological treatment is an extremely important treatment process. [0003] Biological treatment refers to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/34
CPCC02F1/001C02F1/28C02F1/5245C02F1/5263C02F1/545C02F1/56C02F3/02C02F3/34C02F9/00C02F2001/007C02F2203/006C02F2301/08
Inventor 朱晓珂李军钱云辉马衍乾袁顺龙营欢屠焱肖红武
Owner 朱晓珂
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