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Method for quickly starting oxygen-poor ammonia oxidizing biofilter

A biofilter and quick-start technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as large energy consumption and large sludge production, and achieve economical operation Low cost, low sludge production, and chemical reagent saving effects

Inactive Publication Date: 2010-09-15
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a quick-start anoxic ammonium oxidation biological filter technology, which applies anoxic ammonium oxidation bacteria to sewage denitrification technology, realizes the shortest denitrification of nitrogen, and solves the problem of traditional biological denitrification Nitrogen technology consumes a lot of energy, requires a large amount of organic carbon sources and neutralizers, and produces a large amount of sludge

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  • Method for quickly starting oxygen-poor ammonia oxidizing biofilter

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Embodiment

[0024] At normal temperature, hydraulic retention (increase the hydraulic load once on the 64th day of the period); pH value is controlled to be weakly alkaline; dissolved oxygen (DO) is controlled by sealing all containers.

[0025] Since hydroxylamine and hydrazine are important intermediate products in the process of anoxic ammonium oxidation and can induce the biological reaction of anoxic ammonium oxidation, hydroxylamine or hydrazine was added to the test raw water at the stage of starting the anoxic ammonium oxidation test to achieve inoculation. Rapid transformation of sludge into anoxic ammonium oxidation biofilm.

[0026] The reactor is used as a biological filter, and the filter material is ceramsite.

[0027] Inoculation of denitrification biofilm, operation and cultivation of anoxic ammonium oxidizing bacteria can achieve a more ideal denitrification effect, and realize the rapid start-up of anoxic ammonium oxidation biofilter.

[0028] The successful start-up ti...

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Abstract

The invention relates to a method for quickly starting an oxygen-poor ammonia oxidizing biofilter, and relates to a method for biological denitrification of waste water, which comprises the following steps of: (1) inoculating an anaerobic denitrification biomembrane biofilter, and after a denitrification biomembrane is cultured, converting the anaerobic denitrification biomembrane biofilter into an oxygen-poor environment for cultivating oxygen-poor ammonia oxidizing bacteria; (2) taking inorganic carbon NaHCO3 as a carbon source, taking NH4Cl as a nitrogen source of ammonia nitrogen, taking NaNO2 as the nitrogen source of nitrite nitrogen, taking KH2PO4 as a phosphorus source, and controlling the pH value to be alkalescent, wherein the concentration is low-matrix, and the temperature is room temperature; adding hydroxylamine, and inducing and inoculating sludge to be converted towards an oxygen-poor ammonia oxidizing biomembrane; and (3) taking the biofilter as a reactor, and taking ceramsite as filter materials. In the method, the oxygen-poor ammonia oxidizing bacteria are applied to the sewage denitrifying technology to realize the shortest denitrification of nitrogen, so the problems of a large number of required carbon sources and neutralizers, large energy consumption and large sludge producing amount in the conventional biological denitrifying technology are solved.

Description

technical field [0001] The invention relates to a method for biological denitrification of wastewater, in particular to a method for biological denitrification of an anoxic ammonium oxidation biological filter that can be quickly started. Background technique [0002] The presence of nitrogen is the main cause of eutrophication in water bodies. With the enhancement of people's awareness of environmental protection, wastewater denitrification technology has become the key to water pollution control. Biological denitrification is the most economical and practical denitrification technology in wastewater denitrification technology. The traditional wastewater biological denitrification process is mainly that ammonia oxidizing bacteria oxidize ammonia nitrogen to nitrate nitrogen, nitrite oxidizing bacteria oxidize nitrite to nitrate, and finally denitrifying bacteria reduce nitrate and nitrite to nitrogen . The sewage treatment process designed based on this theory has inevita...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 傅金祥刘守勇由昆赵玉华马兴冠唐玉兰张荣新周东旭
Owner SHENYANG JIANZHU UNIVERSITY
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