Control device for fully-automatic constant-flow super-filtering water treatment

A control device and constant flow technology, which is applied in the field of membrane separation technology and water treatment, can solve the problems of difficult to meet the application of membrane treatment, complex operation of the control process, low degree of automation, etc., to achieve real-time observation, advanced technology, and filtration accuracy high effect

Inactive Publication Date: 2007-11-14
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

However, the constant-flow ultrafiltration method and corresponding equipment disclosed in this patent are all control processes and equipment for membrane bioreactors, and the control process needs to be completed by manual operation. The degree of automation is low, the control process is complicated to operate, and the control accuracy is low. , Labor intensity is high, it is difficult to meet the application of actual membrane treatment

Method used

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  • Control device for fully-automatic constant-flow super-filtering water treatment
  • Control device for fully-automatic constant-flow super-filtering water treatment

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Embodiment

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The programmable controller used among the present invention is SIMATIC S7-200, and its CPU unit is CPU226, itself has 24 digital quantity input and 16 digital output ports. The analog quantity input module adopts EM231 and has 4 analog quantity input ports. The analog input and output module adopts EM235, which has 4 analog input ports and 1 analog output port. The inverter adopts Siemens MMV420 inverter.

[0027] Fig. 2 is the implementation structure diagram of the present invention, the raw water to be treated is pressurized by the raw water tank 24 through the water inlet pressure pump 19, enters the security filter 26 through the electromagnetic valve 3, and then flows through the water inlet flow sensor 17 and the water inlet The pressure transmitter 11 enters the ultrafiltration membrane from the water inlet 27 of the...

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Abstract

The present invention discloses a control device of full-automatic constant flow capacity ultrafiltration water treatment. It is characterized by that said invention utilizes water inlet pressure transmitter, dense water pressure transmitter, pressure transmitter and water outlet flow rate sensor and makes them be resectively connected with analog input module; utilizes water-feeding pump and reverse washing pump and makes them be connected with analog input/output module by means of frequency converter; utilizes water intake flow rate sensor and makes it be connected with analog input/output module; makes the analog input module and analog input/output module be connected with programmable controller and makes the programmable controller be connected with 8 electromagnetic valves so as to implement constant flow capacity full-automatic operation and control of said water treatment system.

Description

technical field [0001] The invention belongs to the field of membrane separation technology and water treatment, and in particular relates to a control device for automatic constant flow ultrafiltration water treatment. Background technique [0002] Constant flow ultrafiltration refers to the membrane filtration operation mode that controls the transmembrane pressure difference TMP to gradually increase slowly from a low value, so that the membrane permeable flux is stabilized at an appropriate value. Compared with the constant pressure filtration mode widely used at present, in the early stage of filtration, the average pressure on the membrane during constant flow ultrafiltration is lower than the average pressure on the membrane during constant pressure ultrafiltration, which reduces the acceleration of the migration of pollutants in water to the membrane surface , slowing down the increase of membrane filtration resistance, prolonging the membrane filtration cycle and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/22C02F1/44
Inventor 王磊王旭东严洁王志盈
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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