Method for treating organic wastewater by utilizing laser strengthening activated sludge

A technology for activated sludge and organic wastewater, applied in water/sludge/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the difficulty of mud-water separation, poor treatment effect, poor dehydration effect, etc. problems, to achieve the effect of improving the structure of activated sludge, improving dehydration, and increasing the depth of purification

Inactive Publication Date: 2018-01-19
YUNNAN CHANGJIANG LUHAI ENVIRONMENTAL ENG CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0010] In view of the fact that the widely used activated sludge sewage treatment method has poor treatment effect when the water quality changes greatly or contains refractory substances, at the same time, the mechanical treatment method of traditional sludge sewage treatment has difficulty in separating mud from water, poor dehydration effect, and energy consumption In order to solve the problem of high cost, the present invention proposes a method of using laser to strengthen activated sludge to treat organic wastewater, thereby greatly improving the effect of sludge sewage treatment, simplifying the process and effectively reducing energy consumption and process cost

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  • Method for treating organic wastewater by utilizing laser strengthening activated sludge

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Effect test

Embodiment 1

[0038] The treatment system consists of primary sedimentation tank, aeration tank, laser system, oxygen supply system, secondary sedimentation tank, return system and excess sludge discharge system;

[0039] The cultivation process of activated sludge is as follows: (1) At the initial stage, aerate for 22 hours a day, let it stand for 2 hours, discharge 4L of waste water, and supplement the corresponding weight of self-dispensing water to cultivate bacteria; (2) After 15 days, aerate every day 10h, stand still for 2h, then aerate for 10h, stand still for 2h to cultivate protozoa such as bacterial micelles and bell worms; (3) After 30d, increase the COD and NH of the influent every 46h 3 -N concentration, gradually increasing its effect on NH 3 -N removal rate until it reaches more than 90%, so as to increase the content of nitrifying bacteria and become qualified activated sludge;

[0040] The density of activated sludge is 1.005g / cm 3 , the particle size is 0.05mm, and the ...

Embodiment 2

[0048] The treatment system consists of primary sedimentation tank, aeration tank, laser system, oxygen supply system, secondary sedimentation tank, return system and excess sludge discharge system;

[0049] The cultivation process of activated sludge is as follows: (1) At the initial stage, aerate for 22 hours a day, let it stand for 2 hours, discharge 3L of waste water, and supplement the corresponding weight of self-dispensing water to cultivate bacteria; (2) After 14 days, aerate every day 10h, stand still for 2h, then aerate for 10h, stand still for 2h to cultivate protozoa such as bacteria micelles and bell worms; (3) After 30d, increase the COD and NH of the influent every 44h 3 -N concentration, gradually increasing its effect on NH 3 -N removal rate until it reaches more than 90%, so as to increase the content of nitrifying bacteria and become qualified activated sludge;

[0050] The density of activated sludge is 1.005g / cm 3 , the particle size is 0.2mm, and the sp...

Embodiment 3

[0058] The treatment system consists of primary sedimentation tank, aeration tank, laser system, oxygen supply system, secondary sedimentation tank, return system and excess sludge discharge system;

[0059] The cultivation process of activated sludge is as follows: (1) At the initial stage, aerate for 22 hours a day, let it stand for 2 hours, discharge 3L of waste water, and supplement the corresponding weight of self-dispensing water to cultivate bacteria; (2) After 13 days, aerate every day 10h, stand still for 2h, then aerate for 10h, stand still for 2h to cultivate protozoa such as bacterial micelles and bell worms; (3) After 28d, increase the COD and NH of the influent every 46h 3 -N concentration, gradually increasing its effect on NH 3 -N removal rate until it reaches more than 90%, so as to increase the content of nitrifying bacteria and become qualified activated sludge;

[0060] The density of activated sludge is 1.002g / cm 3 , the particle size is 0.1mm, and the s...

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Abstract

The invention provides a method for treating organic wastewater by utilizing laser strengthening activated sludge. The method comprises the following steps: precipitating wastewater in a primary settling tank, and then entering into an aeration tank, removing organic matters by adsorption, aerobic metabolism and laser processing and flowing into a secondary sedimentation tank for separating sludgefrom water, thereby acquiring the effluent reaching the first-level emission standard. Under the effect of laser, on one hand, the chemical bonds of some organic matters are broken, some toxic and harmful compounds which are difficult to be degraded by microorganisms are degraded and the purifying depth is increased, on the other hand, a sludge structure is improved and the dehydration property of the sludge is effectively promoted. According to the method, the treatment capacity is high, the cost is low, the raw materials are easily acquired, the efficiency for treating the soluble degradable organic matters is high, the whole treatment process is simple and the method is easy for large-scale popularization.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to activated sludge treatment of organic wastewater, in particular to a method for treating organic wastewater by using laser intensified activated sludge. Background technique [0002] With the rapid development of my country's economy and the improvement of people's living standards in recent years, my country's demand for water resources has increased dramatically, and the consumption of industrial water and domestic water has been increasing year after year. In sharp contrast, my country is very scarce in water resources. As a water-scarce country, more than 400 of the more than 600 cities in my country are short of water. Not only that, the surface water and shallow groundwater in many areas of our country have been polluted by industry and life. It can be seen that strengthening the construction of my country's sewage treatment industry and improving sewage treatment technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
Inventor 陈庆司文彬
Owner YUNNAN CHANGJIANG LUHAI ENVIRONMENTAL ENG CO LTD
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