Intelligent aeration denitrification system

Abstract

The invention relates to the technical field of sewage treatment, and in particular, relates to an intelligent aeration denitrification system which is characterized by comprising an anaerobic zone, an aerobic zone, a flexible zone, a rear anoxic zone, a secondary sedimentation tank and a carbon source feeding storage tank; aeration equipment, a dissolved oxygen meter and an ammonia nitrogen meterare arranged in each of the aerobic zone and the flexible zone; a nitrate nitrogen instrument and an ammonia nitrogen instrument are arranged in the rear anoxic zone, the carbon source adding storagetank is communicated with the rear anoxic zone, and a carbon source control valve is arranged on the carbon source pipeline; the system also comprises a water inlet pipeline, one end of the water inlet pipeline is provided with a water inlet pump, a first branch and a second branch of the water inlet pipeline are respectively communicated with the anaerobic zone and the rear anoxic zone, and theinstruments and the control valves are cooperatively controlled and adjusted through a DCS. The denitrification system can intelligently operate, that is, the aeration rate, the reflux quantity and the carbon source addition quantity are self-adjusted, the consumption of an external carbon source is reduced as much as possible, the operation cost is reduced, and finally, the stable and energy-saving effects of a biochemical system are achieved.

Description

【Technical field】 [0001] The invention belongs to the field of sewage treatment, in particular to an intelligent aeration denitrification system. 【Background technique】 [0002] With the increasing environmental pollution, the country pays more and more attention to environmental protection, and the national and local governments have gradually stricted the discharge requirements of sewage plants. With the increase of discharge requirements, it not only increases the difficulty of meeting the water quality standards of sewage plants , but also increased the operating cost of the sewage plant. [0003] where A 2 The / O process is the mainstream process in the current sewage treatment process. This process is equipped with anaerobic, anoxic, and aerobic reaction tanks. COD and ammonia nitrogen (converted into nitrate nitrogen), so as to realize the effective removal of pollutants in sewage. However, it is understood that many sewage plants currently have problems such as un...

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Problems solved by technology

However, it is understood that many sewage plants currently have problems such as unstable effluent quality, excessive energy consumption, and high labor intensity. , high operating energy consumption, etc.

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