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Device for improving N2O production in sewage treatment and control method thereof

A sewage treatment and water tank technology, applied in the device and control field of N2O generation in the process of strengthening sewage treatment, to achieve the effect of controlling the spread of odor and improving living environment conditions

Active Publication Date: 2014-09-24
北控水务(中国)投资有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention changes the traditional N 2 The idea of ​​O control and emission reduction, from the enhanced denitrification process of N 2 The production of O to start with, and then used for the oxidation of methane to produce N 2 , thus inversely solving N 2 The problem of O emission; at the same time, it also improves the energy generated by the methane combustion power generation process of the sewage treatment plant

Method used

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  • Device for improving N2O production in sewage treatment and control method thereof

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing and embodiment: As shown in the figure, a kind of N 2 The device produced by O, 1 is the raw water tank, 1.1 is the vent pipe, 1.2 is the water inlet pipe, 1.3 is the overflow pipe; 2 is the water inlet pump; 3 is the short-range nitrifying liquid water tank, 3.1 is the vent pipe, and 3.2 is the overflow pipe ; 4 is the short-range nitrification liquid pump; 5 is the production of N 2 O reactor, 5.1 is the vent pipe, 5.2 is the sampling port and mud discharge port, 5.3 is the DO probe, 5.4 is the dissolved oxygen meter, 5.5 is the pH probe, 5.6 is the pH meter, 5.7 is the outlet pipe, 5.8 is the stirring blade, 5.9 is the sealing cover, 5.10 is the agitator, 5.11 is the chemical dosing port, 5.12 is the water sealing device, 5.13 is N 2 O collection pipe; 6 is an air compressor, 6.1 is a gas flow meter, 6.2 is an aeration gas pipe, and 6.3 is an aeration head.

[0030] The r...

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Abstract

The invention discloses a device for improving N2O production in sewage treatment and a control method thereof. The device comprises a raw water tank, a water inlet pump, a short-cut nitrification liquid tank, a short-cut nitrification liquid inlet pump, an N2O production reactor and an air compressor. The N2O production reactor is a sealed SBR reactor. The N2O production reactor comprises a sealing cover, a water seal device, an agent filling inlet, an N2O collection pipe, a stirrer, an aeration gas pipe, an aeration head, a DO probe and a pH probe. The control method comprises that a sludge inner carbon source is used as a denitrification carbon source and nitrite inhibits the activity of an N2O reductase so that N2O accumulation is realized; and through aeration, N2O in the mixed liquid is blown into a gas phase and then is collected and the collected N2O can be used as an oxidizing agent for methane combustion so that production power is improved. The control method can improve production power of a sewage treatment plant, reduce an N2O release amount, reduce a sludge yield and reduce a denitrification carbon source demanded amount.

Description

technical field [0001] The invention relates to a method for strengthening N 2 The device and control method for O generation belong to the technical field of sewage biological treatment. Background technique [0002] N 2 O is the six greenhouse gases (CO 2 、CH 4 , N 2 O, HFCs, PFCs, SF 6 ), its chemical properties are stable, it persists in the atmosphere for a long time, and its global warming potential is CO 2 190-270 times that of ozone, and will also destroy the ozone layer. In recent years, in order to control the eutrophication of water bodies, sewage treatment plants have been continuously upgraded to achieve the purpose of efficient biological nitrogen and phosphorus removal, while N 2 O emissions are increasing year by year. It is estimated that between 2005 and 2020, the N of sewage treatment plants 2 O emissions accounted for global N 2 The proportion of O released will rise by 13%. [0003] N in the sewage treatment plant is currently 2 O production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 王淑莹委燕彭永臻马斌李夕耀
Owner 北控水务(中国)投资有限公司
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