Apparatus and method for synchronous denitrification and development of sewage sludge internal carbon source of urban sewage

A technology of urban sewage and internal carbon sources, applied in the field of urban sewage and sludge biochemical treatment, can solve the problems of inability to improve denitrification efficiency, increase the cost of sewage denitrification, and difficulty, and achieve reduction and stabilization, Effects of preventing eutrophication of water bodies and reducing dehydration costs

Active Publication Date: 2008-12-10
BEIJING DRAINAGE GRP CO LTD
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Problems solved by technology

[0003] For urban sewage with low C / N, the lack of organic carbon source is the barrier that cannot improve its denitrification efficiency, and the addition of carbon source will increase the cost of sewage denitrification
At the same time, the reasonable disposal of a large amount of sludge generated in the sewage treatment process is a costly and difficult task, and its construction cost accounts for about 40% of the total construction cost of the entire sewage treatment plant.

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  • Apparatus and method for synchronous denitrification and development of sewage sludge internal carbon source of urban sewage

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment the patent of the present application is described further: embodiment: as shown in Figure 1, the synchronous city sewage denitrification of the present invention and carbon source development device in the sludge, by nitrifying liquid raw water tank 1, sludge The denitrification reactor SDR2, the sedimentation tank 3 and the sludge tank 4 are composed. The effective volume of the nitrifying liquid raw water tank is 300L. The effective volume of the reaction chamber 2.14 of the SDR is 150L, ​​the size of the reactor is Ф×H=50cm×90cm, and the volume of the water bath sleeve 2.13 is 300L. The diameter D=20cm of the sedimentation tank 3, the height H=50cm, the diameter D=1.5cm of the central pipe 3.3.

[0022] The nitrification liquid that embodiment uses is taken from the nitrification pond of Beijing Gaobeidian Sewage Treatment Plant, and the NO of this nitrification liquid 3 - -N concentration is 20-30mg / L...

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Abstract

The invention discloses a synchronous urban sewage denitrogenation and in-sludge carbon source development device and a method using the same. The device is provided with a nitration liquid raw water tank, a sludge denitrification reactor (SDR), a sedimentation tank and a sludge pool, wherein the SDR consists of a reaction chamber and a water bath heating sleeve arranged at the periphery of the reaction chamber; the sedimentation tank is provided with a central pipe and a conical baffle board; and the method making use of the device comprises the steps of starting and reaction cycle operation, etc. The synchronous urban sewage denitrogenation and in-sludge carbon source development device and the method using the same are suitable to be used in urban sewage treatment, and save carbon source along with high degree of automation, high efficiency and good effects.

Description

technical field [0001] The invention relates to the technical field of biochemical treatment of urban sewage and sludge, using the volatile fatty acid VFA produced by the hydrolysis and acidification of the sludge in the primary sedimentation tank of the urban sewage treatment plant as the internal carbon source to simultaneously realize the denitrification of urban sewage and the stabilization of sludge The device and method are suitable for biological denitrification and sludge disposal of urban sewage or industrial wastewater with low carbon-to-nitrogen ratio (C / N). 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 urban sewage and industrial wastewater and the disposal efficiency of excess sludge is the key to sewage treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 张树军韩晓宇王琦周军彭永臻甘一萍杨岸明赵颖马富国孟凡能
Owner BEIJING DRAINAGE GRP CO LTD
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