Process and method for denitrification and phosphorus removal of municipal sewage by half shortcut nitrification and anaerobic ammonium oxidation

A semi-short-path nitrification and anammox technology, which is applied in the field of semi-short-path nitrification/anammox denitrification and phosphorus removal of urban sewage, can solve the problems of high aeration, low treatment efficiency, and high operating costs, and achieves guaranteed Nitrosation rate, ensure high efficiency, and achieve the effect of recycling

Active Publication Date: 2012-07-11
BEIJING UNIV OF TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a process and method for denitrification and phosphorus removal of semi-short-range nitrification/anammox urban sewage, and adopt anaerobic ammonium oxidation techno

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  • Process and method for denitrification and phosphorus removal of municipal sewage by half shortcut nitrification and anaerobic ammonium oxidation
  • Process and method for denitrification and phosphorus removal of municipal sewage by half shortcut nitrification and anaerobic ammonium oxidation

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 In the structural diagram shown, 1 is the domestic sewage raw water tank; 2 is the SBR reactor for removing organic matter; 3 is the first regulating water tank; 4 is the semi-short-range nitrification SBR reactor; 5 is the second regulating water tank; 6 is the second regulating water tank for ammonia nitrogen and nitrous concentration pump; 7 is the autotrophic denitrification UASB reactor; 1.1 is the overflow pipe of the domestic sewage raw water tank, and 1.2 is the vent pipe (the first regulating water tank and the second regulating water tank have the same structure as the raw water water tank); 2.1 2.2 is the agitator, 2.3 is the stirring paddle, 2.4 is the aeration head, 2.5 is the gas flow meter, 2.6 is the air pump, 2.7 is the mud discharge pipe, 2.8 is the drain valve (semi-short-range nitrification ...

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Abstract

The invention provides a process and method for denitrification and phosphorus removal of municipal sewage by half shortcut nitrification and anaerobic ammonium oxidation, which belongs to the technical field of sewage biological treatment. The process comprises an untreated water tank, a sequencing batch reactor (SBR) for removing organic matters, a first regulating water tank, a half shortcut nitrification SBR, a second regulating water tank and an autotrophic denitrification upflow anaerobic sludge blanket (UASB) reactor sequentially connected in series. Sludge is separated according to sludge age, which avoids an influence of rapid propagation of heterotrophic bacteria to autotrophic denitrification flora; and a nitrification system adopts half shortcut nitrification, which stably maintains shortcut more easily, ensures the nitrosification rate of the nitrification system, and provides guarantee for denitrification stability of the system. The anaerobic ammonium oxidation technique is applied to deep denitrification treatment of domestic sewage, which reduces the oxygen consumption by 60% compared with the conventional denitrification method, is free of additional carbon sources and neutralizers, and realizes high-efficiency low-energy consumption municipal sewage treatment.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to a semi-short-path nitrification / anaerobic ammonium oxidation process and method for denitrification and dephosphorization of urban sewage. Background technique [0002] Energy is a strategic economic resource. With the rapid development of my country's economy, the demand for energy is increasing day by day. Urban sewage treatment is one of the energy-intensive industries. Electricity accounts for more than one-third of the operating costs of conventional urban sewage treatment plants. The power consumption of aeration in the sewage biological treatment system accounts for 40%-50% of the power consumption of the whole sewage treatment plant. In recent years, sewage treatment discharge standards have become increasingly stringent, and with the improvement of treatment requirements, the energy consumption of sewage treatment process has also increased. [000...

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Application Information

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IPC IPC(8): C02F9/14C02F3/30
Inventor 彭永臻唐晓雪王淑莹马斌徐竹兵
Owner BEIJING UNIV OF TECH
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