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Ultra-filtration automatic control system and control method based on membrane structure parameter model

An automatic control system and parameter model technology, which is applied in the field of membrane separation technology and water treatment, can solve the problems of eliminating blindness of membrane fouling, and achieve the effects of ensuring the quality of produced water, prolonging the service life, and controlling membrane fouling

Active Publication Date: 2010-12-01
西安金藏膜环保科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the backwash and quick wash methods with a fixed time or constant pressure are blind to eliminate membrane fouling

Method used

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  • Ultra-filtration automatic control system and control method based on membrane structure parameter model
  • Ultra-filtration automatic control system and control method based on membrane structure parameter model

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] like figure 1As shown, the ultrafiltration automatic control system based on the membrane structure parameter model includes: industrial cabinet machine, control cabinet, manual control panel, equipment and instruments, wherein: the industrial computer is equipped with Kingview and MATLAB software; used for remote automatic control Fitting with the model; the control cabinet is equipped with PLC, digital input module, digital output module, analog input module and frequency converter; it is used to collect system field data and exchange data with the industrial computer; the manual control panel is equipped with universal conversion Switches, pushbuttons and indicator lamps; for carrying out control programs in manual control mode; equipment and instruments (see figure 2 Shown) comprises hollow fiber membrane module 12 and th...

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Abstract

The invention relates to an ultra-filtration automatic control system and a method based on a membrane structure parameter model. The control system comprises an industrial personal computer (IPC), a control cabinet, a manual control panel, equipment and a meter which are mutually connected, wherein the IPC sets commands and parameters under an automatic control mode and realizes real-time data exchange with the control cabinet; the control cabinet receives the commands and parameters of an IPC Kingview and implements a control program; and the manual control panel implements the control program under a manual control mode; and the equipment and the meter complete filtering, backwashing, quick-washing and bleaching under a manual control mode or an automatic control mode. The control method applies the PLC to collect ultra-filtration flow, pressure data and Kingview to achieve data preservation and uses MATLAB to fit the data, thereby calculating the optimal backwashing and quick-washing time, and then the PLC calls the calculated result to conduct the backwashing and the quick-washing. The system of invention is scientific, effective and practical, and avoids the blindness that the traditional ultra-filtration system sets time or pressure for the backwashing and the quick-washing, thereby causing the membrane contamination to be more timely and effectively controlled.

Description

technical field [0001] The invention relates to the field of membrane separation technology and water treatment, more specifically, an ultrafiltration automatic control method based on a membrane structure parameter model, and an ultrafiltration system controlled by the control method. Background technique [0002] Ultrafiltration membrane fouling is the main reason for the decrease of permeate water volume or increase of filtration pressure. The prevention and control of ultrafiltration membrane fouling is mainly through: 1) membrane material modification, that is, the ultrafiltration membrane material is modified by a certain method to delay membrane fouling. Such as the modification of the hydrophilicity and hydrophobicity of the membrane surface, the modification of the charge on the membrane surface and the change of the roughness of the membrane surface. 2) Pretreatment of raw water, that is, pretreatment of raw water before ultrafiltration. By changing the properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05C02F1/44
Inventor 王磊王旭东李贵军吕永涛姚智全
Owner 西安金藏膜环保科技有限公司
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