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Method for treating high-content ammonia and nitrogen for shortcut nitrification to discharge effluent by coupling simultaneous denitrification of sludge fermentation with autotrophic nitrogen removal

An autotrophic denitrification and short-range nitrification technology, which is applied in biological sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of difficult to meet discharge standards and high ammonia nitrogen, and achieve simple control and operation Easy to operate and reduce the effect of subsequent processing

Active Publication Date: 2013-04-24
TIANJIN HUANCHUANG TECH DEV CO LTD
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Problems solved by technology

Therefore, using sludge hydrolysis and acidification to strengthen denitrification and denitrification, although the concentration of total nitrogen in the effluent is greatly reduced, it is still difficult to meet the discharge standard due to the high concentration of ammonia nitrogen.

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  • Method for treating high-content ammonia and nitrogen for shortcut nitrification to discharge effluent by coupling simultaneous denitrification of sludge fermentation with autotrophic nitrogen removal

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Embodiment Construction

[0029] The present invention will be further described with reference to the accompanying drawings and examples: as figure 1As shown, the sludge fermentation synchronous denitrification coupled with autotrophic denitrification and sludge reduction device is equipped with a sludge fermentation synchronous denitrification coupled with autotrophic denitrification main reactor 5, a nitrifying solution raw water tank 1, a mud storage tank 2, and a drainage tank. Pool 3 and sludge discharge tank 4; the original water tank 1 is connected to the water inlet of the main reactor 5 through the inlet pump 19, and the mud storage tank 2 is connected to the inlet of the main reactor 5 through the sludge inlet pump 20. The drain port is connected to the drain tank 3 through a valve 17 , and the sludge drain port of the main reactor 5 is connected to the sludge tank 4 through a valve 18 .

[0030] The main reactor 5 adopts a cylindrical airtight structure, and a water sealing device 21 and a ...

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Abstract

The invention discloses a method for treating high-content ammonia and nitrogen for shortcut nitrification to discharge effluent by coupling simultaneous denitrification of sludge fermentation with autotrophic nitrogen removal, belonging to the technical field of biochemical process sewage treatment. The high-efficiency removal of total nitrogen in wastewater and the reduction of sludge are realized in the same space by combined action of hydrolysis acidifying bacteria, denitrifying bacteria and anaerobic ammonium oxidation bacteria. The method is characterized in that part of NO2--N in effluent is reduced by short-chain fatty acid generated by hydrolytic acidification of residual sludge under the action of the denitrifying bacteria; and the other part of NO2--N and ammonia nitrogen released in the hydrolytic acidification process are removed by an anaerobic ammonia oxidation reaction, thereby greatly reducing the concentration of total nitrogen in the effluent and finishing the reduction of the residual sludge simultaneously. The technology is suitable for advanced treatment of high-content ammonia and nitrogen for shortcut nitrification to discharge the effluent.

Description

technical field [0001] The invention relates to a method for treating high-ammonia-nitrogen wastewater with short-range nitrification effluent by applying excess sludge hydrolysis and acidification to produce carbon source, enhanced denitrification and anaerobic ammonia oxidation technology, and belongs to the technical field of biochemical sewage treatment. Through the combined action of hydrolytic acidifying bacteria, denitrifying bacteria and anammox bacteria, the efficient removal of total nitrogen from wastewater and the reduction of sludge can be achieved in the same space. Specifically, the short-chain fatty acids produced by the hydrolysis and acidification of excess sludge will reduce part of the NO in the influent water under the action of denitrifying bacteria. 2 - -N reduction, another part of NO 2 - -N and the ammonia nitrogen released by the hydrolysis and acidification process are removed by anaerobic ammonia oxidation reaction, so that the total nitrogen con...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F11/04
Inventor 王淑莹操沈彬吴程程杜睿彭永臻
Owner TIANJIN HUANCHUANG TECH DEV CO LTD
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