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SBR (sequencing batch reactor) semi-short-distance nitrification process control method

A semi-short-course nitrification and process control technology, which is applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problem of uncontrollable ratio of nitrite and ammonia nitrogen concentration in semi-short-course nitrification effluent , to achieve the effect of strong impact load resistance and convenient management and operation

Active Publication Date: 2013-05-22
BEIJING UNIV OF TECH
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Problems solved by technology

On this basis, a SBR semi-short-range nitrification process control device was developed to solve the problem that the biological treatment of domestic sewage cannot control the concentration ratio of nitrite and ammonia nitrogen in the semi-short-range nitrification effluent. Provides the necessary guarantee for stable operation in wastewater

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  • SBR (sequencing batch reactor) semi-short-distance nitrification process control method
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  • SBR (sequencing batch reactor) semi-short-distance nitrification process control method

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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as image 3 As shown in the structural diagram, the water inlet pump 1 is connected to the SBR reactor 3 through the water inlet pipe 2; the water outlet pipe 4 is provided with the water outlet valve 5; It is equipped with drainage pipe 11 and mud discharge pipe 12;

[0037]SBR reactor built-in pH and DO measuring instrument 10 (connected with pH sensor 6 and dissolved oxygen concentration DO sensor 7 through wires), ammonia nitrogen measuring instrument 8, stirrer 9; pH and DO measuring instrument 10 and ammonia nitrogen measuring instrument 8 are connected through wires The data signal input interface 21 of computer 16 is connected, and the data signal output interface 22 of computer is connected process controller 23 through wire, and the agitation relay 17 of process controller, drainage relay 18, water inlet relay 1...

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Abstract

The invention provides an SBR (sequencing batch reactor) semi-short-distance nitrification process control method, belonging to the technical field of biological sewage treatment and being applicable to semi-short-distance nitrification treatment of low-ammonia-nitrogen wastewater such as urban domestic sewage. The SBR semi-short-distance nitrification process control method comprises five stages, namely inflow stirring and inputting of initial ammonia concentration, aeration stirring, sedimentation, dewatering and standing, wherein an aerobic aeration time is calculated according to a formula ta=tCOD+0.56alphaS0 / ((S0-Sn) / (n-tCOD)), aeration is timely stopped, and semi-short-distance nitrification is realized, wherein concentration ratio of nitrite ions to ammonia nitrogen in yielding water is maintained to be 0.9-1.5; and process management and operation are easy, and impact resisting load of s system is high. Compared with the traditional SBR process control technique, a semi-short-distance nitrification reactor can maintain high nitrite accumulation rate more stably; and the problem that the concentration ratio of the nitrite ions to the ammonia nitrogen in the yielding water of semi-short-distance nitrification can not be controlled in a domestic sewage biological treatment technology is solved, and a necessary inflow guarantee is provided for stable operation of an autotrophic denitrification system in the urban sewage low-ammonia-nitrogen wastewater.

Description

technical field [0001] The invention relates to a method for controlling the SBR semi-short-range nitrification process of nitrogen-containing wastewater, belongs to the technical field of sewage biological treatment, and is suitable for semi-short-range nitrification treatment of low-ammonia-nitrogen wastewater such as urban domestic sewage. Background technique [0002] The eutrophication problem caused by excessive nitrogen and phosphorus content in water bodies is the most important water body pollution problem faced by countries all over the world today. At present, the removal of nitrogen in sewage is mainly through the combined action of biological nitrification and denitrification. However, in order to further realize the efficient, energy-saving and sustainable development of the denitrification process, people have developed a number of new biological denitrification technologies such as short-range nitrification and anaerobic denitrification. Ammonia oxidation. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34
Inventor 彭永臻唐晓雪
Owner BEIJING UNIV OF TECH
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