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Process control method of modified sequencing batch reactor (MSBR) system

A process control and reaction tank technology, applied in aerobic and anaerobic process treatment, anaerobic digestion treatment and other directions, can solve the problems of single mode, unable to adapt to the influence of process flow and effect, etc., to achieve sufficient pre-sedimentation time, exposure The effect of sufficient air time and strong stability

Active Publication Date: 2012-10-24
ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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Problems solved by technology

[0005] The present invention aims at the disadvantages that the existing MSBR process mode is single, unable to adapt to the influence of changes in ambient temperature and treated sewage water quality on the process flow and effect, and the water inflow of the SBR pool will stir the sludge layer at the bottom of the SBR pool, and provides A new MSBR process control method that can adapt to various environmental temperature conditions and sewage water quality

Method used

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  • Process control method of modified sequencing batch reactor (MSBR) system
  • Process control method of modified sequencing batch reactor (MSBR) system
  • Process control method of modified sequencing batch reactor (MSBR) system

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Embodiment 1

[0046] Process control methods for MSBR systems, such as figure 1 shown, including the following specific steps:

[0047] a. Inject 70% of the collected sewage into the anaerobic tank 4 through the pipeline, and at the same time inject the remaining 30% of the sewage into the pre-anoxic tank 3 for denitrification. The COD value of the sewage is between 200-500mg / L, NH3-N Value between 20-45mg / L; The design load of the process control method of the MSBR system is 20000 tons of sewage / day;

[0048] b. In step a, the effluent of anaerobic tank 4 enters the main aeration tank 6 after passing through the anoxic tank 5, and the effluent of the main aeration tank 6 enters the SBR reaction tank 1, 7, in order to reduce the effluent of the main aeration tank 6 Enter SBR reaction tank 1,7 to the agitation of the sludge layer at the bottom of SBR reaction tank 1,7, and described SBR reaction tank 1,7 is circular, as image 3 As shown, the effluent of the main aeration tank 6 is in the ...

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Abstract

The invention relates to a wastewater treatment method and discloses a process control method of a modified sequencing batch reactor (MSBR) system. The process control method includes that sequencing batch reactor (SBR) reaction tanks are operated alternately and intermittently and correspondingly regulate the process control method according to ambient temperatures or inflow water quality conditions. The process control method of the MSBR system has the advantages of being concise in operation modes, sufficient in aeration time and pre-setting time and capable of facilitating sediment and reducing suspended substance (SS) in discharged water, and the whole system performs continuous water inflow and continuous backflow to guarantee full mixing of backflow sludge and inflow water, so that automatic control and daily production management are facilitated; and the process control method is capable of achieving the best treatment effect under conditions of different temperatures and different inflow water qualities.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a process control method of a MSBR (Modified Sequencing Batch Reactor, improved sequencing batch type activated sludge reactor) system. Background technique [0002] MSBR is a more ideal sewage treatment system researched and developed by C.Q.Yang et al. based on the characteristics of SBR technology and combined with traditional activated sludge technology. MSBR does not need the primary settling tank and the secondary settling tank, and it can operate continuously with water inflow at a constant liquid level when the reactor is fully filled. The single-tank multi-cell method combines the advantages of the traditional activated sludge method and SBR technology, not only does not require intermittent flow, but also saves more connecting pipes, pumps and valves required by the multi-tank process. Through pilot test research and productive application, it is proved that MSBR method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/28
Inventor 郑展望裴刚
Owner ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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