Method for purifying tetravalent selenium-containing sewage under anaerobic condition and aerobic condition by utilizing Citrobacter freundii
A technology of citric acid bacteria and sodium citrate, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of low treatment cost, simple process and large treatment range
Inactive Publication Date: 2015-03-04
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
View PDF1 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, there is no report on the use of selenite-reducing bacteria that can grow under both anaerobic and aerobic conditions to remove tetravalent selenium in sewage.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] Below is the specific embodiment of Citrobacter freundii, StrainY9 purifying wastewater containing tetravalent selenium under anaerobic and aerobic conditions:
[0014]
[0015] As can be seen from the table: each embodiment batching and can reach removing tetravalent selenium by described method, by the reduction of Citrobacter freundii, StrainY9 tetravalent selenium is reduced into element selenium, to reach in anaerobic and The purpose of removing tetravalent selenium in sewage under aerobic conditions. Embodiments of the present invention can be practiced, but are not limited to these embodiments.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for purifying tetravalent selenium-containing sewage under an anaerobic condition and an aerobic condition by utilizing citrobacter freundii. According to the method, the Citrobacter freundii Strain Y9, bought from America Type Culture Collection, is taken as a strain, the citrobacter freundii is inoculated in the tetravalent selenium-containing sewage under the anaerobic condition and the aerobic condition and takes sodium citrate, sodium acetate or sodium nitrate as an electron donor, tetravalent selenium in the wastewater is taken as an electron acceptor, and the tetravalent selenium is reduced into element selenium by the Citrobacter freundii Strain Y9 after a biochemical treatment, so that the aim of removing the tetravalent selenium from the sewage under the anaerobic condition and the aerobic condition is realized. The method is simple in process, convenient to operate, low in treatment cost, large in treatment range and free of secondary pollution.
Description
technical field [0001] The invention relates to a method for purifying sewage containing tetravalent selenium by using Citrobacter freundii, StrainY9 under anaerobic and aerobic conditions, and belongs to the technical field of environmental protection sewage purification treatment. Background technique [0002] Selenium is a non-metallic element located in group VIA of the fourth period of the periodic table. Although selenium is relatively deficient in most areas of China, selenium resources are abundant in some areas. For example, there are rare independent selenium deposits in the world in Enshi, Hubei. Selenium is widely used in industry and agriculture. Selenium is widely used in the electronics industry to produce electronic products due to its good semiconductor properties and electrical conductivity, and selenium is also used in the rubber industry, glass and ceramics industries. In agriculture, selenium can also be used to make pesticides and so on. [0003] Al...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C02F3/34C02F3/30
Inventor 潘响亮王潇男高磊
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI