Composite biological deodorizing process and apparatus using bubbleless aeration pretreatment

A non-foaming aeration and biological deodorization technology, which is applied in the direction of air quality improvement, dispersion particle separation, chemical instruments and methods, etc., can solve the problem of insufficient contact of biological filler or activated sludge, incomplete removal of odorous substances, and odor Short residence time and other problems, to achieve the effect of improving the deodorization effect, sufficient deodorization effect, and increasing the residence time

Active Publication Date: 2014-08-27
北控水务建设发展有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of short residence time of odor, insufficient contact with biological filler or activated sludge, and incomplete removal of odor-causing substances in the composite biological deodorization process.

Method used

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  • Composite biological deodorizing process and apparatus using bubbleless aeration pretreatment

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Embodiment 1

[0044] An embodiment of the compound biological deodorization device using bubble-free aeration pretreatment according to the present invention, refer to figure 1 . Taking the odor between the grilles of a sewage plant as the treatment object, the flow rate of the odor is 6m 3 / h, the main pollutant concentration in the odor is: NH 3 6mg / L,H 2 S5mg / L. The odor is blown into the hollow fiber membrane of the membrane module 4 through the air compressor 1, and the aeration pressure of the membrane module is controlled at 1MPa. Medium pollutants (NH3, H2S, VOC, etc.) dissolve in water to form NH 4 + plasma compound.

[0045] The gas-water flow ratio is set to 2000, and by adjusting the water inlet pump 6 and the water delivery pump 10, the flow rate of tap water and the mixed solution is controlled to be 3L / h, and the residence time of the mixed solution containing pollutants in the activated sludge liquid phase reaction zone 16 is 4h , Under the action of the aerobic-anoxi...

Embodiment 2

[0049] In the described embodiment 1, the odor and the water flow ratio are adjusted to 1500, and the residence time of the mixed solution in the activated sludge liquid phase reaction zone 16 is 3h, and other conditions are as embodiment 1. At this moment, the pollutant removal rate is the same as Compared with Example 1, it has slightly decreased, and the odor after treatment still meets the first-class standard.

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Abstract

The invention specifically relates to a composite biological deodorizing process and apparatus using bubbleless aeration pretreatment, belonging to the field of treatment of stink by using a bioreactor. The objective of the invention is to overcome problems like short retention time of stink, insufficient contact with a biological filling material or activated sludge and incomplete removal of substances incurring stink in composite biological deodorizing process. According to the invention, pollutants are turned from a gas phase into a liquid phase through bubbleless aeration pretreatment, retention time of the pollutants in a reaction unit is increased, dissolvable pollutants are degraded in an activated sludge liquid phase reaction zone, and residual stink is fully collected and then enters a filling material zone for treatment; meanwhile, effluent of the liquid phase reaction zone is used as a spraying liquid, so the pollutants are further removed and an adequate deodorizing effect is obtained.

Description

technical field [0001] The invention belongs to the field of using a bioreactor to treat odor, and in particular relates to a composite biological deodorization process and device using non-bubble aeration pretreatment. Background technique [0002] Odor, as a kind of odor pollutant, mainly comes from sulfur-containing, nitrogen-containing, and oxygen-containing gas compounds produced by the decay of organic matter. It has a wide variety of sources. Smell not only gives people sensory displeasure, but can even endanger human physical health, such as dyspnea, nausea, chest tightness, and vomiting. In order to prevent and avoid the impact of malodorous gases on the environment, "Discharge Standards of Pollutants for Urban Sewage Treatment Plants" (GB18918-2002) and "Discharge Standards of Odor Pollutants" (GB14554-93) both put forward corresponding odor control indicators. Therefore, it has become one of the important environmental protection issues to research and develop ec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/38
CPCY02A50/20
Inventor 薛晓飞庞洪涛穆永杰李涛史彦伟李婧
Owner 北控水务建设发展有限公司
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