An integrated reactor and denitrification method for pre-denitrative autotrophic biological denitrification

A technology of autotrophic biological denitrification and pre-denitrification, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve less control conditions, promote sludge granulation, control The effect of simple and easy conditions

Active Publication Date: 2019-05-03
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, traditional denitrification devices require a large amount of organic matter to achieve nitrate removal.

Method used

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  • An integrated reactor and denitrification method for pre-denitrative autotrophic biological denitrification
  • An integrated reactor and denitrification method for pre-denitrative autotrophic biological denitrification

Examples

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Embodiment Construction

[0043] Below in conjunction with the examples, the specific implementation of the present invention will be further described in detail.

[0044] The definition of semi-denitrification mentioned in this paper is the process of converting nitrate to nitrite during the autotrophic biological denitrification process of high ammonia nitrogen wastewater.

[0045] The integrated reactor for pre-denitrative autotrophic biological denitrification of the present invention comprises an aerobic zone 3, an anaerobic zone 5, an anoxic zone 2 and an airlift device.

[0046] Described aerobic zone 3 comprises the reaction zone 14 of bottom and the gas collection chamber 4 that top is formed by aeration tail gas, and the bottom of reaction zone 14 is provided with aeration device 8, and aeration device 8 is connected with blower fan (in the figure) by inlet pipe 12 not shown) connection, acclimation or inoculation in the aerobic zone 3 for nitrosating nitrosifying bacteria and suspension adso...

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Abstract

The invention discloses a prepositive denitrification autotrophic biodenitrification integral reactor and a denitrification method, and belongs to the technical field of wastewater biological treatment denitrification. The reactor comprises an aerobic region (3), an anaerobic region (5), a gas ascending device and an anoxic region (2), wherein the anoxic region (2) is positioned outside the aerobic region (3); the anoxic region (2) communicates with the aerobic region (3); the upper part of the anoxic region (2) is provided with a water inlet (1); the water inlet (1) is connected with a water pump; the two ends of a flow guide pipe (10) respectively communicate with the anoxic region (2) and a precipitation region (7); one end of an air guide pipe (11) communicates with an air collecting chamber (4); the other end of the air guide pipe (11) extends into one end, positioned in the anoxic region (2), of the flow guide pipe (10). The reactor and the denitrification method have the advantages that the environment favorable for the growth of denitrifying bacteria, nitrite bacteria and anammox bacteria to grow is created; the complete autotrophic biodenitrification is realized.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment denitrification, and in particular relates to an integrated reactor and a denitrification method for pre-denitrification autotrophic biological denitrification. Background technique [0002] In recent years, as a new type of biological denitrification technology, anaerobic ammonium oxidation has been favored by many researchers because of its high denitrification performance, no need for organic matter participation, and low treatment cost. Anaerobic ammonium oxidation refers to the process in which anammox bacteria use ammonia nitrogen as an electron donor and nitrous nitrogen as an electron acceptor to perform a biological reaction under anaerobic conditions, and convert it into nitrogen gas. Nitrosation is the process by which aerobic nitrosating bacteria use molecular oxygen to convert ammonia nitrogen into nitrite nitrogen. Through the adjustment of the control parame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302
Inventor 黄勇李祥袁怡李勇潘杨李大鹏李学艳
Owner SUZHOU UNIV OF SCI & TECH
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