Combined denitrification apparatus and method by shortcut nitrification and anaerobic ammonium oxidation of sludge-digestion liquid

A technology of anaerobic ammonium oxidation and sludge digestion solution, applied in chemical instruments and methods, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problem of increasing nitrogen load and denitrification efficiency of sewage treatment Can not be improved, low nitrogen removal efficiency and other problems, to achieve the effect of reducing construction and operation costs, reducing volume and aeration costs, and improving nitrogen and phosphorus removal efficiency

CN101289264AActive Publication Date: 2008-10-22BEIJING DRAINAGE GRP CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: BEIJING DRAINAGE GRP CO LTD
Publication Date: 2008-10-22

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Abstract

The invention discloses a device for autotrophic nitrogen removal by combining A / O shortcut nitrification of sludge digestion liquid and anaerobic ammonium oxidation of granular sludge and a method thereof. The device of the invention comprises a digestion liquid tank, an A / O shortcut nitrification tank, a sedimentation tank, a middle water tank, an anaerobic ammonium oxidation tank, wherein, the digestion liquid tank is communicated with a first cancellus as an anoxic zone of the A / O shortcut nitrification tank by the inlet pump of the A / O shortcut nitrification tank; the sedimentation tank the upper part of which is communicated with the middle water tank by a water pipe is provided with a central pipe and the anaerobic ammonium oxidation tank is provided with a water bath sleeve and a granular sludge bed. In addition, the method of the invention comprises the following steps of starting the A / O shortcut nitrification tank; starting the anaerobic ammonium oxidation tank of the granular sludge; operating an autotrophic biological nitrogen removal system in series after the starting of the A / O shortcut nitrification tank and the anaerobic ammonium oxidation tank is respectively completed. The device and the method of the invention are applicable to the shortcut nitrification and the nitrogen removal of the sludge digestion liquid in a sewage treatment plant and have the advantages of advanced technology, simple structure of the device, convenient operation and good treatment effect of water purification.

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Description

technical field

[0001] The invention belongs to the technical field of biological denitrification of waste water with low carbon-to-nitrogen (C / N) ratio and high concentration ammonia nitrogen, and specifically relates to a short-range nitrification reaction of digested liquid rich in ammonia nitrogen sludge in urban sewage plants through dynamic control, and then without organic carbon. In the presence of nitrogen sources, the nitrogen in the digestive juice is removed by Anammox (ANAMMOX, Anaerobic Ammonia Oxidation) to complete the autotrophic biological denitrification, which is suitable for low C / N ratio of high ammonia nitrogen wastewater biological nitrogen removal. Background technique

[0002] my country's water pollution continues to intensify, and the phenomenon of eutrophication caused by the excessive accumulation of nitrogen and phosphorus in natural water bodies continues to erupt. Social development. Therefore, improving the denitrification efficiency of ur...

Claims

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