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Sediment fine-filtering method for sewage treatment

A technology of sewage treatment and fine filtration, which is applied in water/sewage treatment, neutralized water/sewage treatment, oxidized water/sewage treatment, etc., and can solve problems such as costing a lot of money and equipment, heavy sewage treatment load, and affecting treatment effects , to achieve the effect of reducing burden, optimizing sewage water quality, and improving pertinence

Inactive Publication Date: 2020-02-18
金鼎文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to solve the problem that a complete set of sewage treatment system proposed by the above-mentioned background technology needs to occupy a large area, so that the sewage treatment load per unit area is relatively large, and long-term high-load operation is also difficult. It will affect the treatment effect, and it will cost a lot of money and equipment to establish a complete and efficient sewage treatment system inside the factory. Most factories only discharge the sewage after simple neutralization treatment, causing serious pollution to the water environment. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A sedimentation fine filtration method for sewage treatment, specifically comprising the following steps:

[0037] Step 1, the sewage is preliminarily filtered through the grid filter and then placed in the sedimentation tank for sedimentation for 3 hours. After sedimentation, 30% of the supernatant is extracted and placed in the filter material tank;

[0038] Step 2: The supernatant liquid enters the three-layer filter pool through the filter material for filtration, and then passes through the softening filter for softening until the hardness is 170mg / L, removes scaling ions in the water, and adds additives;

[0039] Step 3: Detect the pH value of the purified water after the fine filtration through the pH detector through the softened water, and add a corresponding pH regulator to adjust to the standard water quality pH value;

[0040] Step 4: Add lime, sulfuric acid, sodium hydroxide and ozone to the adjusted clear water, and put the improved clear water into a fine...

Embodiment 2

[0043] A sedimentation fine filtration method for sewage treatment, specifically comprising the following steps:

[0044] Step 1, the sewage is preliminarily filtered through the grid filter and then placed in the sedimentation tank for sedimentation for 3 hours. After sedimentation, 40% of the supernatant is extracted and placed in the filter material tank;

[0045] Step 2: The supernatant liquid enters the three-layer filter pool through the filter material for filtration, and then passes through the softening filter for softening until the hardness is 290mg / L, removes scaling ions in the water, and adds additives;

[0046] Step 3: Detect the pH value of the purified water after the fine filtration through the pH detector through the softened water, and add a corresponding pH regulator to adjust to the standard water quality pH value;

[0047] Step 4: adding sodium hydroxide and sodium carbonate to the adjusted clear water, and putting the improved clear water into a fine fi...

Embodiment 3

[0050] A sedimentation fine filtration method for sewage treatment, specifically comprising the following steps:

[0051] Step 1, the sewage is preliminarily filtered through the grid filter and then placed in the sedimentation tank for sedimentation for 3 hours. After sedimentation, 50% of the supernatant is extracted and placed in the filter material tank;

[0052] Step 2: The supernatant liquid enters the three-layer filter tank through the filter material for filtration, and then passes through the softening filter for softening until the hardness is 340mg / L, removes scaling ions in the water, and adds additives;

[0053] Step 3: Detect the pH value of the purified water after the fine filtration through the pH detector through the softened water, and add a corresponding pH regulator to adjust to the standard water quality pH value;

[0054] Step 4: adding sodium hydroxide and sodium carbonate to the adjusted clear water, and putting the improved clear water into a fine filt...

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Abstract

The invention discloses a sediment fine-filtering method for sewage treatment. According to the sediment fine-filtering method for sewage treatment, sewage is placed in a settling pond for sedimentation after being filtered and is placed in a filter material filtering pond for filtration after sedimentation, and an additive is added after the sewage is softened through a softening filter. Throughthe method, the problems that in the prior art, a sewage treatment system requires filtration through multiple sets of filtering equipment, construction cost is high, and meanwhile a large site is needed for construction are solved; when 70% supernatant is extracted, the burden on a worker is small, the treatment frequency is lowered, but the water treatment effect is the worst; when 30% supernatant is extracted, the sewage treated subsequently can reach a direct discharge standard, the treatment capacity every time is small, and the working burden on equipment maintenance and the worker is enhanced; and a sewage plant can select different treatment methods according to the water quality of the discharged sewage for treatment, so that the pertinence of sewage treatment is also improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a precipitation fine filtration method for sewage treatment. Background technique [0002] At present, the urban sewage treatment rate is low and the pressure of environmental pollution is high, but most of the current treatment technologies face the problem of high capital investment. At present, there is an urgent need for low energy consumption and ecological sewage treatment technology. Moreover, with the improvement of people's living standards and urban With the acceleration of globalization, my country's urban sewage discharge continues to grow. The focus of water pollution control has gradually changed from industrial point source-based control to urban domestic sewage pollution. In recent years, the discharge of urban domestic sewage and industrial wastewater has increased year by year. The discharge has caused serious pollution to the water environm...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F9/12
CPCC02F9/00C02F1/001C02F2001/007C02F1/66C02F1/5236C02F1/78C02F1/763C02F1/76C02F1/481C02F5/00C02F2209/06
Inventor 金鼎文
Owner 金鼎文
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