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Accurate aeration method for sewage treatment

An aeration method and sewage treatment technology, which is applied in the field of sewage treatment, can solve problems such as heavy maintenance workload, high input price, and semi-paralysis of the system, and achieve the effects of stable system pressure, precise control effect, and precise aeration

Active Publication Date: 2018-05-04
中原环保股份有限公司
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Problems solved by technology

[0007] In addition, the above two technologies have extremely high requirements for online instruments (water inlet flowmeter, air flowmeter, water inlet ammonia nitrogen, COD monitoring instrument, etc.), biological modules and blower control hardware equipment, so the initial investment of the control system is expensive. The post-maintenance workload is heavy and the cost is high. If equipment hardware, communication network, and online instrument failures occur, the system will be in a semi-paralyzed state

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  • Accurate aeration method for sewage treatment

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Embodiment 1

[0046] Embodiment 1: a method for accurate aeration of sewage treatment, comprising the following steps:

[0047] (1) Introduce the sewage to be treated into four biological pools, the biological pools are equipped with an aeration system, and the aeration system includes a controller, a blower unit and aeration pipes respectively arranged in the biological pools , the aeration pipeline in each biological pool communicates with the external air main pipe through a diverter pipe, butterfly valves are respectively arranged on the diverter pipes corresponding to each biological pool, a pressure gauge is arranged on the air main pipe, and the blower unit and The air main pipe is connected correspondingly, and an online dissolved oxygen measuring instrument is respectively provided in the biological pool; the butterfly valve, blower unit, pressure gauge and online dissolved oxygen measuring instrument are respectively electrically connected with the controller; An air flow meter is...

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Abstract

The invention discloses an accurate aeration method for sewage treatment. The aeration amount of each biological tank is adjusted through adjusting the aperture of a butterfly valve and the pressure of an air genera pipe according to changes of online dissolved oxygen concentration, so that the problem of hysteresis of dissolved oxygen reaction is solved; a condition that the butterfly valve is frequently regulated is avoided and system pressure is relatively stable, so that the accurate control effect is realized and the service life of equipment is prolonged; finally, the aim of saving energy is realized.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a precise aeration method for sewage treatment. Background technique [0002] Wastewater biological treatment is to decompose, absorb or absorb pollutants through the metabolism of microorganisms to purify water quality. Compared with physical and chemical methods, the cost is low, the efficiency is high, and the secondary pollution generated during the treatment process is extremely small. mainstream wastewater treatment methods. In order to meet the needs of treating wastewater from different sources and different properties, various types of biological treatment processes such as anaerobic-aerobic activated sludge process, oxidation ditch method, SBR, AB method, biological contact oxidation method, BAF and so on have been developed. reactor. In these different types of processes, an aerobic treatment stage is generally included to complete the oxidation of organic m...

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Application Information

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IPC IPC(8): C02F3/02
CPCC02F3/02Y02W10/10
Inventor 王小玲张南刘迎旭蒋晚霞李华伟魏明和笑天罗鹏
Owner 中原环保股份有限公司