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Accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm

An evolutionary algorithm, big data technology, applied in chemical instruments and methods, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve problems such as dissolved oxygen consumption

Inactive Publication Date: 2019-06-25
北控水务(中国)投资有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The second is the utilization and consumption of dissolved oxygen

Method used

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  • Accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm
  • Accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm
  • Accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm

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Embodiment Construction

[0013] The precise aeration control system of the present invention will be described in detail below in conjunction with the accompanying drawings, and the effect will be described in conjunction with a specific embodiment.

[0014] The precise control of aeration is divided into two dimensions of time and space. In space, the dissolved oxygen of the biological pool is controlled in different areas to meet the needs of different process sections for aeration; in terms of time, the DO value is dynamically set according to the change of the influent load. , to meet the aeration requirements under different water inlet conditions.

[0015] According to the design of biological pools and aeration pipelines of a sewage plant, a single group of biological reaction pools is divided into Π (in this example Π = 4) dissolved oxygen control areas, and a total of 2Π dissolved oxygen control areas are set in the biological pools to realize the control of dissolved oxygen. Precise control ...

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Abstract

The invention relates to an accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm. The system comprises three subsystems: a ''simulation+model'' pretreatment system which uses historical data of a sewage plant to carry out process modeling; a ''feedforward+model+feedback'' control system and a ''big data+evolutionary algorithm'' verification system; operating parameters are obtained through the pretreatment system, a gas amount equilibrium steady state value is obtained through model calculation, each control area is accurately controlled according to the gas amount, the control system comprises a data acquisition module, a data processing module, a blower control module and a valve control module, the ''big data+evolutionary algorithm'' verification system uses data before and after operation to simulate, calculate and correct system parameters to improve the control stability. The system has the advantages of reasonable design, simple and convenient operation, reliable and stable performance, wide popularization and application, and the like.

Description

technical field [0001] The invention relates to the optimal control of the aeration process of an aerobic tank for urban sewage treatment, in particular to precise aeration control. Background technique [0002] The aeration process of the activated sludge method is to provide suitable dissolved oxygen for the removal of organic carbon, nitrification, phosphorus absorption and other processes, so as to promote the normal progress of the three biochemical reactions. The goal of aeration flow control is to form stable dissolved oxygen conditions and establish a dynamic balance and reliable living environment for microbial growth and pollutant degradation. The essence of this dynamic equilibrium process is to make the total oxygen transfer rate approximately equal to the total oxygen consumption rate. Since the influent water quality and water quantity of the sewage plant change, its oxygen consumption also changes in a specific period of time. Only by balancing the oxygen sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 刘帅刘伟岩郭泓利王亿宝王峰曾庆磊郝二成
Owner 北控水务(中国)投资有限公司
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