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Process and automatic control coupled sewage treatment system and aeration control method thereof

A sewage treatment system and process technology, applied in water treatment parameter control, aerobic process treatment, biological water/sewage treatment, etc., can solve the problem of inability to achieve on-demand aeration, etc., to solve the lag of aeration control and reduce aeration The effect of reducing gas energy consumption and reducing the cost of carbon sources

Pending Publication Date: 2020-11-20
北控水务(中国)投资有限公司 +1
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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to propose a sewage treatment system coupled with process and automatic control and its aeration control method, so as to solve the problem that the aeration on demand cannot be realized in the prior art

Method used

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  • Process and automatic control coupled sewage treatment system and aeration control method thereof
  • Process and automatic control coupled sewage treatment system and aeration control method thereof
  • Process and automatic control coupled sewage treatment system and aeration control method thereof

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present specification shall have ordinary meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in one or more embodiments of the present specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "con...

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Abstract

The invention provides a process and automatic control coupled sewage treatment system and an aeration control method thereof. The system comprises an aerobic tank with a mechanical stirring device and an air blower arranged outside the aerobic tank. The air blower is communicated with the aerobic tank through an air main pipe, an air main pipe and an air branch pipe, a valve is arranged on the air branch pipe, an aerator is arranged at the bottom of the aerobic tank and is arranged on the air branch pipe, a dissolved oxygen meter and an ammonia nitrogen meter are arranged in the aerobic tank,a central controller is arranged outside the aerobic tank, the central controller is connected with the dissolved oxygen meter, the ammonia nitrogen meter and the air blower, and the aeration rate ofthe air blower is adjusted according to the ammonia nitrogen real-time value and the dissolved oxygen real-time value. The concentrations of dissolved oxygen and ammonia nitrogen in water in the sewage treatment tank are almost the same, local dissolved oxygen is prevented from being too high, waste of endogenous respiration to a carbon source is reduced as much as possible, the proportion of thecarbon source for nitrogen and phosphorus removal is increased, the biological nitrogen and phosphorus removal effect is improved, and the adding amount of the carbon source and a phosphorus removalagent is reduced. Meanwhile, the aeration energy consumption is also reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system coupled with process and automatic control and an aeration control method thereof. Background technique [0002] Existing aeration control technologies include precise aeration technology, model control technology based on activated sludge reaction kinetic model, etc. The method adopted by precise aeration technology is mainly based on feedforward and feedback control based on influent water quality and water quantity parameters, online dissolved oxygen parameters of biological pools, etc. There is a large hysteresis in the control of aeration volume, and the nonlinear characteristics of aeration volume and The impact of influent water quality and quantity often leads to unsatisfactory aeration control, and excessive or insufficient aeration occurs. The aeration control method based on the activated sludge reaction kinetic model requires more i...

Claims

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Application Information

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IPC IPC(8): C02F3/20C02F7/00C02F3/30
CPCC02F3/006C02F3/1284C02F3/205C02F3/308C02F7/00C02F2209/14C02F2209/22C02F2209/38Y02W10/10
Inventor 刘伟岩魏彬汪力张平马文瑾王启镔郭毅王亿宝郝二成
Owner 北控水务(中国)投资有限公司
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