Coagulating process flocculate detection method based on image processing technology and optimization control system

A technology of optimal control and flocculation, applied in the fields of flocculation/sedimentation water/sewage treatment, analytical materials, instruments, etc., it can solve the problems of insufficiency and difficulty in realizing real-time optimal dosing of coagulants, saving chemicals and reducing excess The harm of dosing, the effect of optimizing dosing

Inactive Publication Date: 2004-10-20
HARBIN INST OF TECH
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Problems solved by technology

Since the conventional water treatment reaction is a complex physical and chemical process, it takes at least 40 minutes from dosing to precipitation and effluent, the time lag of the system itself and the complexity of the reaction, the system setting value determined by the above method cannot meet the continuous change of raw water quality Therefore, it is difficult to realize the real-time optimal dosing of coagulant

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  • Coagulating process flocculate detection method based on image processing technology and optimization control system

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Embodiment Construction

[0010] In the conventional water treatment process, the raw water after adding chemicals is mixed and stirred, then flows through the primary reaction tank and the secondary reaction tank, and then enters the sedimentation tank. The underwater camera system of the present invention is installed near the outlet of the secondary reaction pool, the light enters the underwater CCD camera through the optical system, the optical signal is converted into a video signal, and enters the computer image monitoring and processing system after being digitized by the image acquisition card. The two-dimensional pictures of the reaction flocs are obtained by the image acquisition system, and the characteristics and geometric parameters of the flocs are obtained after analysis and processing, including the density, average particle size, particle size distribution, particle volume and quantity of the flocs. Based on the detection results of raw water quality parameters in the water treatment sy...

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Abstract

A method and system based on image processing technique for the in-line real-time detection and evaluation to the flocculate generated after coagulating reaction in water treating procedure and the optimized control for adding coagulant is disclosed. An underwater photography is used to obtain the 2D image of flocculate by CCD. The 2D image is processed to obtain the characteristics and geometric parameters of flocculate. By use of the fuzzy sorting-analyzing method and flocculate speciment library, the flocculate is automatically classified and evaluated for optimizing the addition of coagulant.

Description

1. Technical field [0001] The invention relates to the detection of the floc characteristics and geometric parameters of the reaction tank by means of an underwater camera in the coagulation process of water treatment, and the evaluation of the degree of coagulation reaction by a fuzzy reasoning method, so as to realize the optimization control of the coagulation and dosing process. 2. Background technology [0002] The coagulation and dosing process of water treatment is a key link that affects the quality of treated water, and has always been the focus of water treatment research. With the development of computer technology and the improvement of the automation of water plant operation, the automatic control of coagulation and dosing has been realized to a certain extent. Due to the complex physical and chemical reaction mechanism of the water treatment process, the time-varying nature of the water quality parameters in the reaction process, and the time-lag of the reactio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52G01N15/00G01N35/00
Inventor 马军白桦
Owner HARBIN INST OF TECH
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