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Method and device for realizing partial shortcut nitrification and anaerobic ammonia oxidation of municipal sewage by sludge fermentation

A technology of anaerobic ammonium oxidation and short-range nitrification, which is applied in the field of urban sewage treatment and sludge biochemical treatment, can solve the problems that carbon sources cannot satisfy nitrogen and phosphorus removal, increase the output of remaining sludge, and the effluent is difficult to meet the standard, so as to achieve the realization of sewage treatment. Mud reduction treatment, cost saving, cost saving effect

Active Publication Date: 2016-11-16
BEIJING UNIV OF TECH
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Problems solved by technology

However, most urban sewage in my country generally has a serious shortage of carbon sources, and its own carbon sources cannot meet the requirements of nitrogen and phosphorus removal, making it difficult for the effluent to meet the standards
Although good water effluent effect can be achieved by adding methanol, sodium acetate and other external carbon sources, the cost is too high, and it will also increase the output of residual sludge

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  • Method and device for realizing partial shortcut nitrification and anaerobic ammonia oxidation of municipal sewage by sludge fermentation
  • Method and device for realizing partial shortcut nitrification and anaerobic ammonia oxidation of municipal sewage by sludge fermentation

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Embodiment Construction

[0024] The patent application is further described in conjunction with accompanying drawings and examples: as figure 1 As shown, the present invention includes a surplus sludge fermentation tank, a sludge fermentation mixture storage tank, a sewage water tank, an intermediate water tank, the first SBR of the sequencing batch reactor, and the second SBR of the sequencing batch reactor. The effective volumes of the six devices are 5L, 3L, 30L, 30L, 12L, and 9L respectively, in which the excess sludge fermentation tank, sludge fermentation mixture storage tank and sequencing batch reactor SBR are made of plexiglass; the intermediate water tank, sewage The water tank is made of organic plastic.

[0025]The device comprises that the excess sludge is pumped into the excess sludge fermentation tank (2) through the first pump peristaltic pump (1), and the first agitator (3) and a temperature control device (4) are installed in the excess sludge fermentation tank (2). , the first pH c...

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Abstract

A method and a device for realizing partial shortcut nitrification and anaerobic ammonia oxidation of municipal sewage by sludge fermentation belong to the field of municipal sewage treatment and sewage biological treatment. In a first SBR of a reactor, organics and phosphorus are removed, partial shortcut nitrification and denitrification actions are taken, and phosphorus is removed through real-time DO and pH control and sludge discharge. Effluent of the first SBR of the reactor enters a second SBR of the reactor for anaerobic ammonia oxidation reaction, so that the purpose of deep nitrogen and phosphorus removal is achieved. As residual sludge and domestic wastewater are mixed for treatment, the problem that shortcut nitrification of domestic wastewater cannot be stably realized due to low ammonia concentration can be solved, carbon sources are saved, the nitrogen and phosphorus removal efficiency is improved, and meanwhile, the sludge reduction treatment is realized.

Description

technical field [0001] The invention relates to a method and device optimization control for realizing partial short-range nitrification and anaerobic ammonium oxidation of urban sewage by using fermented sludge, and belongs to the fields of urban sewage treatment and sludge biochemical treatment. This process is suitable for the enhanced deep nitrogen and phosphorus removal of low C / N, C / P urban domestic sewage. Background technique [0002] In the process of biological nitrogen removal, denitrifying bacteria, as heterotrophic bacteria, need organic matter as electron donors to reduce oxidized nitrogen; in the process of biological phosphorus removal, phosphorus accumulating bacteria absorb short-chain fatty acids VFA in the anaerobic stage to synthesize PHA and store them in the cells , Decompose PHA in the aerobic section as the energy required for excess phosphorus uptake. Therefore, organic carbon sources are very important for biological nitrogen and phosphorus remova...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/305C02F3/307C02F2101/105C02F2101/16C02F2203/006
Inventor 彭永臻刘瑾瑾袁悦王淑莹
Owner BEIJING UNIV OF TECH
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