A method for treating organic wastewater with laser-enhanced 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: 2018-08-10
YUNNAN CHANGJIANG LUHAI ENVIRONMENTAL ENG CO LTD
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  • Abstract
  • Description
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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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  • A method for treating organic wastewater with laser-enhanced activated sludge

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Embodiment 1

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

[0039] The culture process of activated sludge is as follows: (1) At the initial stage, aerate for 22h a day, stand for 2h, discharge 4L wastewater, and supplement the corresponding weight of self-allocated water to cultivate bacteria; (2) After 15d, aerate every day 10h, let stand for 2h, then aerate for 10h, let stand for 2h to cultivate protozoa such as micelles and bellworms; (3) After 30d, increase the influent COD and NH every 46h 3 -N concentration, gradually increase its NH 3 -N removal rate until it reaches more than 90% 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, the specific surface area is 60cm 2 / cm 3 , The moisture content is 99.5%, the vol...

Embodiment 2

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

[0049] The culture process of activated sludge is as follows: (1) At the initial stage, aerate for 22h a day, stand for 2h, discharge 3L of wastewater, and supplement the corresponding weight of self-allocated water to cultivate bacteria; (2) After 14d, aerate every day 10h, let stand for 2h, then aerate for 10h, let stand for 2h to cultivate protists such as micelles and bellworms; (3) After 30d, increase the influent COD and NH every 44h 3 -N concentration, gradually increase its NH 3 -N removal rate until it reaches more than 90% 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, the specific surface area is 80cm 2 / cm 3 , The water content is 99.7%, the vola...

Embodiment 3

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

[0059] The culture process of activated sludge is as follows: (1) At the initial stage, aerate for 22h every day, stand for 2h, discharge 3L of wastewater, and supplement the corresponding weight of self-allocated water to cultivate bacteria; (2) After 13d, aerate every day 10h, let stand for 2h, then aerate for 10h, let stand for 2h to cultivate protists such as micelles and bellworms; (3) After 28d, increase the influent COD and NH every 46h 3 -N concentration, gradually increase its NH 3 -N removal rate until it reaches more than 90% 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, the specific surface area is 40cm 2 / cm 3 , The water content is 99.8%, the ...

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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 the treatment of organic wastewater by activated sludge, and in particular to a method for treating organic wastewater by using laser-enhanced 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 risen sharply, and the water consumption of industrial water and domestic water has been rising year after year. In sharp contrast, my country's water resources are very scarce. As a water-scarce country, more than 400 of our 600 cities lack 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 technology is the only way to alleviate the p...

Claims

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Application Information

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Patent Type & Authority Patents(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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