Fixed-microbe seawage-treatment technology

A technology for immobilizing microorganisms and immobilizing microorganisms, which is applied in the direction of sustainable biological treatment, biological water/sewage treatment, aerobic process treatment, etc. The impact resistance of glue is not good and other problems, to achieve the effect of strong ability to immobilize microorganisms, increase biological load, and treat water quality

Inactive Publication Date: 2003-03-26
北京三泰正方生物环境科技发展有限公司
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Problems solved by technology

This method is simple to operate and has little impact on microbial activity, but the immobilized microorganisms are not conducive to mass transfer due to the hindrance of the network structure, and the hydrogel has poor impact resistance and short life.
So far, no ideal method for immobilization of microorganisms has been found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Microbial immobilization carrier, several foam plastics, soaked in 20% NaOH solution for 24 hours, washed with water and neutralized with 10% HCl for 24 hours, added reaction volume 10% epichlorohydrin under the condition of 20% NaOH solution, at 50 ℃ react at 40° C. for 1 hour, wash with water and neutralize with 10% HCl, and wash with water until neutral to obtain the microorganism-immobilized carrier.

[0030] 2. Immobilization of microorganisms, put 30-40% carrier in the 500L reactor, add activated sludge as the inoculation flora, pass through the industrial wastewater with a pH value of 7-8 to soak the carrier in the reactor, and in the condition of stuffy exposure Acclimatization and immobilization reactions were carried out under the following conditions. During the acclimatization and health preservation period, the nitrogen content of the carrier was measured by the Kjeldahl method every day, and the corresponding microbial load was calculated. Another 500L...

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PUM

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Abstract

The present invention utilizes a certain fixation measure to fix microorganism on the carrier which is modified foamed plastics, and makes the load quantity of microorganism be up to 18-56 g / L, so that the treatment speed and treatment effect of treating sewage by using microorganism are raised. Its main technological parameters are: maximum BODS volume load is 28 kg BOD5 / cu.m.d, and maximum NH(+)4-Nvolume load is 3.6 Kg NH(+)4-N / cu.m.d. Said invention not only is suitable for treating urban sewage, industrial sewage, but also can be used for treating river environment sewage.

Description

technical field [0001] The invention relates to a process for treating sewage, in particular to a process for treating sewage with immobilized microorganisms. technical background [0002] Sewage biological treatment technology has become the leading technology in the field of sewage treatment. As an economical, reasonable and effective water pollution control engineering method, it plays an important role in improving the quality of water environment and preventing water pollution. At present, the immobilization methods of microorganisms mainly include surface adsorption immobilization method, cross-linking immobilization method, embedding immobilization method and so on. The surface adsorption immobilization method refers to the method in which microorganisms are adsorbed and fixed on the surface of the carrier. The biofilm method in the current sewage treatment is a representative example. This method is simple to operate and has little impact on microbial activity, but ...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/10C02F3/34C12N11/08
CPCY02W10/10
Inventor 叶正芳李沧海李三喜
Owner 北京三泰正方生物环境科技发展有限公司
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