Method for domestic sewage treatment

A technology for domestic sewage and treatment methods, which is applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the requirements of many reaction conditions, complicated dosing and connection, and large consumption of medicine. and other problems, to achieve the effect of small residual solids, high phosphorus removal rate and low cost

Inactive Publication Date: 2015-01-07
CHUZHOU YOULIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Fenton method device occupies a large area, the dosing and connection are complicated, the chemical consumption is large, and the chemical cost is high. After the reaction, the pH and precipitation need to be adjusted, and a lot of sludge and hazardous waste are likely to be generated. Many conditions are required, and the treatment effect is unstable, which limits the development of large-scale industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A treatment method for domestic sewage, comprising the steps of:

[0021] (1) Use the sewage pump to remove the coarse solid debris in the domestic sewage through the grid, and then send the sewage into the grit chamber for sedimentation treatment;

[0022] (2) Send the sewage settled in the sedimentation tank to the aerobic zone for aerobic treatment, and add an aeration device in the aerobic zone for aeration treatment;

[0023] (3) The sewage treated in step (2) is degraded and purified again through the biofilm filler layer;

[0024] (4) The water treated in step (3) flows into the secondary settling tank, and the sludge produced by aerobic and biofilm treatment is removed by sedimentation to obtain clarified treated water;

[0025] (5) The treated water after secondary precipitation flows into the coagulation tank with coagulant added, and stays in the coagulation tank for 6-12 minutes;

[0026] (6) Flocculation and disinfection: Add flocculants in the flocculati...

Embodiment 2

[0031] A treatment method for domestic sewage, comprising the steps of:

[0032] (1) Use the sewage pump to remove the coarse solid debris in the domestic sewage through the grid, and then send the sewage into the grit chamber for sedimentation treatment;

[0033] (2) Send the sewage settled in the sedimentation tank to the aerobic zone for aerobic treatment, and add an aeration device in the aerobic zone for aeration treatment;

[0034] (3) The sewage treated in step (2) is degraded and purified again through the biofilm filler layer;

[0035] (4) The water treated in step (3) flows into the secondary settling tank, and the sludge produced by aerobic and biofilm treatment is removed by sedimentation to obtain clarified treated water;

[0036] (5) The treated water after the secondary precipitation flows into the coagulation tank with coagulant added, and stays in the coagulation tank for 8 minutes;

[0037] (6) Flocculation and disinfection: Add flocculants in the flocculat...

Embodiment 3

[0042] A treatment method for domestic sewage, comprising the steps of:

[0043] (1) Use the sewage pump to remove the coarse solid debris in the domestic sewage through the grid, and then send the sewage into the grit chamber for sedimentation treatment;

[0044] (2) Send the sewage settled in the sedimentation tank to the aerobic zone for aerobic treatment, and add an aeration device in the aerobic zone for aeration treatment;

[0045] (3) The sewage treated in step (2) is degraded and purified again through the biofilm filler layer;

[0046] (4) The water treated in step (3) flows into the secondary settling tank, and the sludge produced by aerobic and biofilm treatment is removed by sedimentation to obtain clarified treated water;

[0047] (5) The treated water after secondary precipitation flows into the coagulation tank with coagulant added, and stays in the coagulation tank for 12 minutes;

[0048] (6) Flocculation and disinfection: Add flocculants in the flocculation...

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Abstract

The invention discloses a method for domestic sewage treatment. The method comprises the following steps: enabling the sewage to flow through a grating to remove thick and big solid sundries in the sewage; then feeding the sewage into a settling tank to carry out sedimentation treatment; carrying out aerobic treatment process, carrying out processing by a bio-film carrier layer, finally carrying out flocculation treatment, and carrying out other steps. The processing method is simple in process, good in effect, high in color removal rate, low in COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand), high in phosphorus removal rate, small in solid residual volume, low in cost and suitable for popularization.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a domestic sewage treatment method. Background technique [0002] With the development of my country's industry, a large amount of industrial sewage and domestic sewage are produced, and the pollution impact on the environment is becoming more and more obvious. Among them, the difficult sewage discharged, such as chemical sewage, petrochemical sewage, coking sewage, landfill leachate, pharmaceutical sewage, electroplating cyanide-containing sewage, grinding sewage, etc., contains many refractory biodegradable organic substances and biological toxic substances, and the organic components are complex , COD concentration is high, and this type of sewage is very difficult to treat. In recent years, my country has done a lot of research and technological development in the field of difficult sewage treatment, but the corresponding environmental protection tasks are still very arduous. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52
CPCC02F9/00C02F1/001C02F1/5236C02F1/5245C02F1/56C02F3/02C02F2101/105C02F2301/08
Inventor 王庆球刘健何晓春杨长春
Owner CHUZHOU YOULIN TECH DEV
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