A kind of sewage treatment precise control system and sewage treatment method

Abstract

The invention discloses a sewage treatment precision control system and a sewage treatment method. Including MBR membrane tank, aerobic zone, first micro-oxygen zone, second micro-oxygen zone, clear water tank, aeration device and control system; said MBR membrane tank can communicate with said aerobic zone, said Can be communicated with the first micro-oxygen zone, the first micro-oxygen zone can be communicated with the second micro-oxygen zone, the second micro-oxygen zone can be communicated with the MBR membrane pool, the MBR membrane pool It can communicate with the clear water pool; the said facultative oxygen zone, the first micro-oxygen zone, the second micro-oxygen zone and the MBR membrane pool are equipped with redox potential probes and dissolved oxygen probes; The control system can obtain the data collected by the redox potential probe and the dissolved oxygen probe, and can control the aeration device to send zone and the MBR membrane cell transport gas. It can reduce the energy consumption and operating cost of the sewage treatment system, and ensure that the effluent water quality parameters meet the standards.

Description

technical field [0001] The invention relates to the technical field of sewage treatment automatic control, in particular to a sewage treatment precision control system and a sewage treatment method. Background technique [0002] At present, the control pollutant indicators of most sewage treatment plants in China, such as TN (Total Nitrogen, total nitrogen), TP (Total Phosphorus, total phosphorus), SS (Suspended Solids, suspended solids), cannot meet the standard requirements after the bid is raised. If the raw water quality fluctuates greatly, the sewage biological treatment system is vulnerable to impact, resulting in waste of energy consumption of the process system, making the system effluent stable and up to standard cannot be guaranteed, resulting in large changes in effluent quality, and the traditional biochemical treatment process is difficult to accurately control The DO (Dissolved Oxygen, dissolved oxygen) concentration and ORP (Oxidation-Reduction Potential, oxid...

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Problems solved by technology

[0002] At present, the control pollutant indicators of most sewage treatment plants in China, such as TN (Total Nitrogen, total nitrogen), TP (Total Phosphorus, total phosphorus), SS (Suspended Solids, suspended solids) cannot meet the standard requirements after the bid is raised

If the raw water quality fluctuates greatly, the sewage biological treatment system is vulnerable to impact, resulting in waste of energy consumption of the process system, making the system effluent stable and up to standard cannot be guaranteed, resulting in large changes in effluent quality, and the traditional biochemical treatment process is difficult to accurately control The DO (Dissolved Oxygen, dissolved oxygen) concentration and ORP (Oxidation-Reduction Potential, oxidation-reduction potential) data in each area of ​​the biochemical pool cannot ensure that the TN is stable and up to standard, and the sludge production is high, and the sludge disposal cost is high

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