Lung-type aeration sponge beneficial for improving aeration efficiency in sewage treatment technology

A sewage treatment and aeration technology, which is applied in the direction of aerobic process treatment, sustainable biological treatment, aerobic and anaerobic process treatment, etc., can solve the problems of large footprint, impact on the surrounding environment, high basic investment, etc., and achieve utilization Efficiency improvement and energy saving effect

Inactive Publication Date: 2016-07-06
北京市大兴区畜禽繁育改良指导站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the basic investment is high, the floor area is large, and it has a certain impact on the surrounding environment; due to the low solubility of oxygen in water, the utilization rate of oxygen is not high, resulting in high unit sewage treatment costs
Reducing the cost of sewage treatment has become an urgent task for the industry. Since the essence of sewage treatment is microbial degradation, supplemented by chemical and physical methods to degrade and separate polluted components in water, improving the degradation efficiency of microorganisms is the key to reducing sewage treatment costs. The key, and the utilization rate of oxygen in the aeration process is not only related to the degradation efficiency of microorganisms, but also greatly affects the cost of sewage purification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention provides a lung-type aeration sponge which is beneficial to improve the aeration efficiency in the sewage treatment process. The sponge is made of polyhexafluoropropylene and sponge foam, and the weight percentage of the fluorocarbon resin powder is 1%;

[0021] Its preparation method is:

[0022] Firstly, measure the above-mentioned fluorocarbon resin powder by weight and grind it into a powder with a fineness of less than or equal to 100 meshes, add 1% of the measured foaming auxiliary agent and a measured sponge into the stirring device, and fully mix to form Mixed material;

[0023] Secondly, the mixed material is foamed to form a porous body;

[0024] After the porous body is cooled and matured again, a sponge is formed.

[0025] Preferably, wherein the auxiliary agent for foaming includes a chain extender, a foaming agent, a catalyst, and a foam stabilizer.

[0026] Preferably, the stirring and mixing temperature is 70° C., and the stirring time i...

Embodiment 2

[0030] The invention provides a lung-type aeration sponge which is beneficial to improving aeration efficiency in a sewage treatment process. The sponge is made of polytetrafluoroethylene and sponge foam, and the weight percentage of fluorocarbon resin powder is 10%;

[0031] Its preparation method is:

[0032] Firstly, measure the above-mentioned fluorocarbon resin powder by weight and grind it into a powder with a fineness of less than or equal to 100 meshes, add 3% of the measured foaming auxiliary agent and a measured sponge into the stirring device, and fully mix to form Mixed material;

[0033] Secondly, the mixed material is foamed to form a porous body;

[0034] After the porous body is cooled and matured again, a sponge is formed.

[0035] Preferably, wherein the auxiliary agent for foaming includes a chain extender, a foaming agent, a catalyst, and a foam stabilizer.

[0036] Preferably, the stirring and mixing temperature is 75° C., and the stirring time is 40 mi...

Embodiment 3

[0040] The invention provides a lung-type aeration sponge which is beneficial for improving aeration efficiency in a sewage treatment process. The sponge is made of polyfluoroethylene propylene (F46) and sponge foam, and the weight percentage of the fluorocarbon resin powder is 30%;

[0041] Its preparation method is:

[0042] Firstly, measure the above-mentioned fluorocarbon resin powder by weight and grind it into a powder with a fineness of less than or equal to 100 meshes, add 5% of the measured foaming auxiliary agent and a measured sponge into the stirring device, and fully mix to form Mixed material;

[0043] Secondly, the mixed material is foamed to form a porous body;

[0044] After the porous body is cooled and matured again, a sponge is formed.

[0045] Preferably, wherein the auxiliary agent for foaming includes a chain extender, a foaming agent, a catalyst, and a foam stabilizer.

[0046] Preferably, the stirring and mixing temperature is 78° C., and the stirri...

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PUM

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Abstract

The invention discloses a lung-type aeration sponge beneficial for improving the aeration efficiency in a sewage treatment technology.The sponge is prepared by foaming fluorocarbon resin powder and a sponge, wherein the weight percentage of the fluorocarbon resin powder is 1%-60%.An aeration technology which is widely applied in an existing sewage treatment technology can be replaced, the bubble-free aeration effect is achieved, the oxygen utilization rate is increased by 2-3 times compared with a traditional method, and therefore the oxygen content in sewage can be increased to 30%-90% from original 5%-30%; the sewage is simply blended with returned sludge and returned water in an anaerobic tank and then enters a three-dimensional micro-oxygen aeration tank, and the purpose of purifying the sewage is achieved through an aerobic reaction, an anaerobic reaction and an facultative anaerobic reaction of special carriers and immobilized microorganisms.Aeration in the aeration tank is performed quantificationally and timely, therefore, energy sources needed by aeration can be greatly saved, and the purposes of energy conversation and high efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a lung-type aeration sponge which is beneficial to improving aeration efficiency in the sewage treatment process. Background technique [0002] In many occasions, it is necessary to increase the dissolved amount of oxygen in water, such as aerobic fermentation, sewage aeration, aquaculture, aquatic product transportation, etc. But normally the solubility of oxygen in water is very low. The method efficiency of aerating water to improve oxygen content in water is very low, generally 5-30%, has caused the waste of energy. [0003] At present, the method of sewage treatment at home and abroad mostly uses the method of anaerobic plus activated sludge aeration, and aeration accounts for about 70% of the cost. Its disadvantages are high basic investment, large floor area, and certain impact on the surrounding environment; due to the low solubility of oxygen in water, the uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F3/30
CPCC02F3/02C02F3/30Y02W10/10
Inventor 秦泽荣王欣洪长怀罗光建曹学峰汪海
Owner 北京市大兴区畜禽繁育改良指导站
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