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Method for utilizing advanced oxidation for carrying out pretreatment on sewage and culturing engineering microalgae for carrying out sewage deep treatment and carbon dioxide emission reduction

An advanced oxidation and advanced treatment technology, applied in the direction of oxidation water/sewage treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of low vitality, low pollutant removal rate and low fecundity of engineering microalgae , to achieve the effect of changing the concept of sewage treatment, promoting decontamination effect, and good treatment effect

Active Publication Date: 2010-02-24
NAT ENG RES CENT OF URBAN WATER RESOURCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of low vitality, low fecundity and low pollutant removal rate of engineering microalgae in the process of using engineering microalgae to treat sewage, and engineering microalgae can only absorb CO in flue gas. 2 To provide a method of using advanced oxidation to pretreat sewage and cultivate engineered microalgae for advanced sewage treatment and carbon dioxide emission reduction

Method used

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specific Embodiment approach 1

[0015] Specific implementation mode 1: In this embodiment, advanced oxidation is used to pretreat sewage, and the method for cultivating engineering microalgae for advanced sewage treatment and carbon dioxide emission reduction is carried out according to the following steps: 1. Pretreatment of sewage and flue gas with advanced oxidation; 2. , The pretreated sewage is treated with Na 2 CO 3 or CaO to adjust the pH value to 6.5-8.5, and then pass the adjusted sewage and flue gas into the bioreactor for advanced treatment with engineering microalgae; that is, the sewage treatment and CO 2 emission reduction.

[0016] This embodiment uses Na 2 CO 3 Or CaO to adjust the pH value can change the pH value of the water body in a short time, thus providing a suitable start-up environment for the next step of engineering microalgae. In step 2 of this embodiment, the flue gas that has undergone advanced oxidation is passed into the bioreactor filled with sewage by means of bottom aer...

specific Embodiment approach 2

[0017] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the flue gas in step 1 comes from a cement plant, a steel plant, a petroleum plant, an ethylene plant, a synthetic ammonia plant, an ethylene oxide plant or a hydrogen production plant . Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiments one to two is: the sewage in step one comes from the secondary effluent of the urban sewage plant, the unfinished sewage of the urban sewage plant or natural water bodies (rivers, rivers, rivers, etc.) lake). Other steps and parameters are the same as those in Embodiments 1 to 2.

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Abstract

The invention relates to a method for utilizing advanced oxidation for carrying out pretreatment on sewage and culturing engineering microalgae for carrying out sewage deep treatment and carbon dioxide emission reduction. The method utilizes the advanced oxidation for carrying out pretreatment on the sewage and flue gas and utilizes the artificially cultured engineering microalgae for simultaneously solving the sewage deep treatment and the CO2 emission reduction. The method solves the defects that algae in the prior art can not absorb macromolecular organic pollutants in the sewage and is limited in sewage treatment. The method utilizes the advanced oxidation for treating the sewage and the flue gas, then utilizes the engineering microalgae for carrying out the deep treatment on the sewage after the pretreatment in a bioreactor and absorbs CO2 in the flue gas for utilization, and the engineering microalgae can also extract functional products. The method has the advantages of low cost, small investment, high efficiency and good treatment effect, and can carry out resource recovery on the flue gas, increase biomass energy sources, reduce the burden of the sewage deep treatment technology, reduce the project cost and change the sewage treatment concept on the traditional sense.

Description

technical field [0001] The invention relates to pretreatment of sewage and flue gas by advanced oxidation, and uses artificial cultivation of engineering microalgae to simultaneously solve the advanced treatment of sewage and CO 2 ways to reduce emissions. Background technique [0002] At present, engineering microalgae is used to treat sewage. Due to the large amount of toxic and harmful organic substances in the sewage, the engineered microalgae has low vigor, low fecundity and low pollutant removal rate, and the engineered microalgae can only absorb CO in the flue gas. 2 , for SO 2 And gaseous nitrogen oxides can do nothing. Therefore, the application of engineered microalgae in environmental governance engineering is limited. Contents of the invention [0003] The present invention aims to solve the problem of low vitality, low fecundity and low pollutant removal rate of engineering microalgae in the process of using engineering microalgae to treat sewage, and engin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01D53/74B01D53/84B01D53/60B01D53/62C02F1/72C02F1/78C02F1/32C02F1/30C02F1/36C02F1/66C02F3/32
CPCY02A50/20
Inventor 马军韩雅红王群韩帮军
Owner NAT ENG RES CENT OF URBAN WATER RESOURCE
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