Method for treating seawater-containing sewage through marine anaerobic ammonium oxidation bacteria

An anaerobic ammonia oxidizing bacteria and seawater technology, applied in anaerobic digestion treatment, seawater treatment, chemical instruments and methods, etc., can solve the problems of osmotic pressure change of microbial cells, destruction of biological treatment system, rupture of bacterial cells, etc. The effect of saving energy and materials, efficient denitrification, and low production cost

Active Publication Date: 2017-07-21
QINGDAO UNIV
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Problems solved by technology

The direct use of seawater is mainly manifested in industrial cooling water, industrial production water, and urban domestic water. Although the use of seawater has significant social and economic benefits, no matter where the seawater is used, it will eventually be discharged into urban sewage Treatment system, the resulting seawater sewage, due to its high concentration of salt, will cause rapid changes in the osmotic pressure of microbial cells, resulting in bacterial cell rupture or inhibiting bacterial growth, which will damage the biological treatment system

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  • Method for treating seawater-containing sewage through marine anaerobic ammonium oxidation bacteria

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Embodiment 1

[0025] The biological treatment system used in this example is a continuous biofilm reactor. The reactor is wrapped with a layer of tin foil for light-proof treatment to avoid the impact of light on marine anammox bacteria. The filler used in the reactor is a stepped ring filler. , the filling rate of the filler is 80%, the microorganisms attach and grow on the filler, avoiding the loss with the water flow, the reactor is not equipped with a heating device, and always operates at room temperature. The specific treatment process is as follows:

[0026] (1) Extract sludge from marine bottom mud in a certain sea area, use elutriation solution to repeatedly elutriate the sludge for 5 times, each time for 10 minutes, let it stand for 50 minutes after elutriation, and pour out the upper layer after the sludge is completely settled Elutriation liquid, remove the impurities inside, and then pour the sludge after elutriation into the reactor, wherein the composition of the elutriation l...

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Abstract

The invention belongs to the technical field of biological treatment of sewage, and relates to a method for treating seawater-containing sewage through ocean anaerobic ammonium oxidation bacteria. The method comprises the following steps: extracting sludge from marine sediment for elutriation, enriching and cultivating the marine anaerobic ammonium oxidation bacteria in the sludge through ammonia nitrogen and nitrite nitrogen-containing seawater, then introducing the seawater-containing sewage into a reactor enriched with the marine anaerobic ammonium oxidation bacteria, and transforming ammonia nitrogen serving as an electron donor and nitrite nitrogen serving as an electron acceptor into nitrogen through the marine anaerobic ammonium oxidation bacteria, and discharging the nitrogen out of the reactor, thus realizing denitration treatment of the seawater-containing sewage. The whole technological process is simple, the operation and the control are flexible, efficient denitration of the seawater-containing sewage can be realized, energy and materials are saved, the production cost is low, economical benefit is high, and the method is convenient for popularization and application.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of sewage biological treatment, and relates to a biological treatment process technology for sewage containing seawater, in particular to a method for treating sewage containing seawater by marine anaerobic ammonium oxidizing bacteria. Background technique [0003] The shortage of water resources has become a worldwide crisis. At present, more than 100 countries in the world are short of water, and my country is also a country with relatively poor fresh water resources. Due to the acceleration of urbanization and the rapid development of the economy, the city's water demand has grown at an alarming rate. The contradiction between water supply and demand has become a bottleneck restricting the development of industry and agriculture in many places in my country, especially in China's economically developed coastal areas. There is a serious water shortage. crisis. The development of seawater resources ...

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Application Information

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IPC IPC(8): C02F3/28C02F3/34C02F103/08
CPCC02F3/28C02F3/282C02F3/34C02F2103/08C02F2305/06
Inventor 李津于德爽张培玉冯莉楼迎华石磊
Owner QINGDAO UNIV
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