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Sewage treatment technology and equipment thereof

A sewage treatment equipment, sewage treatment technology, applied in adsorption water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Secondary pollution, large equipment footprint, etc., to achieve the effects of environmental protection, water quality improvement, and COD content reduction

Inactive Publication Date: 2009-10-21
山东中科润环保科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing sewage treatment methods generally adopt biological purification, activated carbon adsorption, aeration oxidation and electrolysis, etc. These methods have many disadvantages, such as high price, large equipment footprint, and inconspicuous treatment effect, etc.
Although various treatment methods can achieve the standard discharge of sewage, none of them can meet the standard of industrial water, which has caused a lot of waste of available resources in the water, which is not in line with the concept of economical production and cannot reduce the production cost of enterprises. There are also volatile substances in the sewage in the treatment process, which will cause secondary pollution to the air, and is not conducive to the comprehensive protection of the health of the operators and the environment.

Method used

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  • Sewage treatment technology and equipment thereof
  • Sewage treatment technology and equipment thereof
  • Sewage treatment technology and equipment thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A kind of sewage treatment process, including printing and dyeing industrial sewage into the sump, the COD content of the sewage is 4000mg / L, the pH is 10, and then the sewage is sent into a closed reactor, and sewage treatment chemicals are added during the movement of the sewage. Treatment, the operating flow rate of sewage in the closed reactor is: 75-80m 3 / h, the sewage changes 180 degrees in the direction of the equipment at intervals, forming a collision reaction section, and the rest is a stable reaction section. The sewage treatment agent is mixed with the sewage and enters the reactor at the same time. The agent is a mixture of flocculant and decolorizer . The closed reactor used is a tubular reactor with a circular cross section.

[0041] The flocculant used is DC-491, and the dosage is 1-1.2kg / ton of sewage; the decolorizing agent is sodium silicate, and the dosage is: 1.5-1.8kg / ton of sewage. At the same time, phosphoric acid with a weight fraction of 10%...

Embodiment 2

[0047] A kind of sewage treatment process, including printing and dyeing industrial sewage into the sump, the COD content of the sewage is 3000mg / L, the pH is 9, and then the sewage is sent into the reactor, and the sewage treatment agent is added simultaneously during the movement of the sewage. Treatment, the operating flow rate of sewage in the reactor is: 80-83m 3 / h, the sewage will change 90 degrees in the running direction of the equipment at intervals, forming a collision reaction stage, and the rest is a stable reaction stage. The reactor used is a tubular reactor with an elliptical cross-section.

[0048] The flocculant used is ferrous sulfate, and the dosage is 1.2-1.4kg / ton of sewage. At the same time, hydrochloric acid with a weight fraction of 10% is added to adjust the water property, and the dosage is 0.5-0.65kg / ton of sewage.

[0049] The sewage treated by this process has a water phase equilibrium decolorization rate of 90%, the odor in the sewage basically ...

Embodiment 3

[0054] A sewage treatment process, including mixing and collecting the sewage from the production line of the printing and dyeing industry and the paper industry into the sump. The COD content of the sewage is 1500mg / L and the pH is 5. Simultaneously add sewage treatment chemicals for treatment, the running flow of sewage in the reactor is: 50m 3 / h, the sewage will change 90 degrees in the running direction of the equipment at intervals, forming a collision reaction section, the rest is a stable reaction section, and the sewage treatment agent is a decolorizer. The reactor used is a tubular reactor with a square cross section.

[0055] The decolorizing agent used is a mixture of sodium silicate and sodium metasilicate, and the dosage is: 2-2.2kg / ton of sewage. At the same time, a sodium hydroxide solution with a weight fraction of 10% is added to adjust the water property, and the consumption amount is 0.5-0.65 kg / ton of sewage.

[0056] The sewage treated by this process h...

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Abstract

The invention relates to a sewage treatment technology and equipment thereof, in particular provides a brand-new industrial treatment technology and equipment thereof. The technology comprises a sewage-collecting step, a sewage medicament-condensing step, an in-sewage solid-liquid separation step and a secondary in-sewage oxide treatment step. Sewage after the steps can generally achieve the recycle standard of industrial water on the premise of no addition of other surface active agents and the like or can be directly drained, therefore, the invention lessens the environmental pollution of the industrial sewage, recycles the utilizable contents in the sewage to the maximum extent and saves the enterprise expenses.

Description

technical field [0001] The invention relates to a sewage treatment process, and specifically provides a brand-new industrial treatment process and equipment thereof. Background technique [0002] With the development of industry, the problem of water pollution is becoming more and more serious, especially printing and dyeing sewage and papermaking sewage. Due to the complex chemical components contained in it, it is extremely difficult to treat, and because the complex components of pollutants are high, the chemical pollution of sewage Oxygen demand and biological oxygen demand are extremely high. Once this kind of sewage is discharged directly without treatment or if the treatment fails to meet the standard, it will be discharged into natural water bodies, which will seriously damage the balance of natural water systems and cause a large number of algae and other substances. Seriously affect the In terms of water quality, the green algae event in Taihu Lake in 2007 was caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F1/52C02F1/28C02F1/48
CPCY02W10/37
Inventor 钟惠丽
Owner 山东中科润环保科技有限公司