Method used for realizing whole-course autotrophic nitrogen removing via anaerobic ammonium oxidation immobilization

A technology of whole-process autotrophic denitrification and anaerobic ammonium oxidation, which is applied in the field of sewage treatment, can solve the problems of unstable operation and easy loss of the whole-process autotrophic denitrification system, and achieve long-term stable operation, not easy to lose, and full-process autotrophy The effect of denitrification system is easy

Active Publication Date: 2015-08-12
TIANJIN HUANCHUANG TECH DEV CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that anammox bacteria are easy to lose in the whole process of autotrophic denitrification system, dissolved oxygen is easy to affect the activity of anammox sludge, and the operation of the whole process of autotrophic denitrification system is unstable. Anammox gel pellets were prepared by immobilized m

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  • Method used for realizing whole-course autotrophic nitrogen removing via anaerobic ammonium oxidation immobilization
  • Method used for realizing whole-course autotrophic nitrogen removing via anaerobic ammonium oxidation immobilization

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Embodiment 1

[0034] The whole process autotrophic denitrification system started by anaerobic ammonia oxidation immobilization technology is used to treat domestic sewage. The specific process is as follows:

[0035] Select the highly active anammox sludge, wash it with deionized water, and use it as an embedded immobilized strain; prepare polyvinyl alcohol (PVA) and alginic acid respectively according to the mass-volume percentage concentration of 15% and 2%. Sodium (SA) solution, the mixed solution is heated at 120°C for 20 minutes to accelerate dissolution; the obtained anammox strain and the cooled PVA-SA mixed solution are fully mixed according to the volume ratio of 1:1 to obtain a mixed solution; 50% and 2% mass-volume percentage concentration preparation sodium nitrate (NaNO 3 ) and calcium chloride (CaCl 2 ) mixed fixative solution, and the mixed solution was added dropwise to sodium nitrate (NaNO 3 ) and calcium chloride (CaCl 2 ) in the mixed immobilizing solution at room tempe...

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Abstract

The invention discloses a method used for realizing whole-course autotrophic nitrogen removing via anaerobic ammonium oxidation immobilization, and belongs to the field of sewage treatment. According to the method, polyvinyl alcohol is mixed with sodium alginate for anaerobic ammonium oxidation cell immobilization, and prepared anaerobic ammonium oxidation gelled pills are applied to a whole-course autotrophic nitrogen removing system. A device comprises a raw water tank, a biological decarbonizing reactor, a middle water tank, and a whole-course autotrophic nitrogen removing reactor. According to the method, the anaerobic ammonium oxidation gelled pills obtained via imbedded immobilization and partial nitrification sludge are delivered into the whole-course autotrophic nitrogen removing reactor, problems of anaerobic ammonium oxidation bacteria in the whole-course autotrophic nitrogen removing system that loss is easily caused, and anaerobic ammonium oxidation sludge activity is easily influenced by dissolved oxygen, are solved; the anaerobic ammonium oxidation bacteria are intercepted in the whole-course autotrophic nitrogen removing system by the immobilized anaerobic ammonium oxidation gelled pills, dissolved oxygen transmission is blocked, inhibition of the anaerobic ammonium oxidation bacteria in the immobilized anaerobic ammonium oxidation gelled pills by dissolved oxygen is not easily caused, stability is increased; and whole-course autotrophic nitrogen removing is realized.

Description

technical field [0001] The invention relates to a method for realizing whole-process autotrophic denitrification by utilizing anaerobic ammonium oxidation immobilization technology, and belongs to the technical field of sewage treatment. Background technique [0002] With the continuous occurrence of water eutrophication, nitrogen pollution has attracted people's attention, and denitrification treatment of urban sewage has become a research hotspot in sewage treatment today. The traditional biological denitrification method is mainly nitrification-denitrification denitrification, but due to its high investment and high energy consumption, it is not suitable for the treatment of high-nitrogen and low-carbon wastewater. In recent years, with the discovery of new biological denitrification pathways, the anammox biological denitrification process is gradually being developed and applied. [0003] Anaerobic ammonium oxidation (ANAMMOX) is currently known as the most simple and e...

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Application Information

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IPC IPC(8): C02F9/14C02F3/28
CPCY02W10/30
Inventor 王淑莹韩金浩贾方旭彭永臻李建伟张建华王众
Owner TIANJIN HUANCHUANG TECH DEV CO LTD
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