CN100577267C - Control device for fully-automatic constant-flow super-filtering water treatment - Google Patents
Control device for fully-automatic constant-flow super-filtering water treatment Download PDFInfo
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- CN100577267C CN100577267C CN200710017590A CN200710017590A CN100577267C CN 100577267 C CN100577267 C CN 100577267C CN 200710017590 A CN200710017590 A CN 200710017590A CN 200710017590 A CN200710017590 A CN 200710017590A CN 100577267 C CN100577267 C CN 100577267C
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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
The invention belongs to membrane separation technique and water treatment field, be specifically related to a kind of control device of fully-automatic constant-flow super-filtering water treatment.
Background technology
Constant-flow ultrafiltration is meant that control transmembrane pressure TMP begins progressively to raise slowly than low value from a certain, makes the film water flux be stabilized in the membrane filtration operation pattern of a certain appropriate value.With respect to present widely used constant pressure filtration pattern, filtering early stage, the average pressure that film is subjected in the constant-flow ultrafiltration process is the suffered average pressure of film during less than the constant voltage ultrafiltration, reduced the acceleration of water pollutant to the face migration, slowed down the increase of resistance of membrane filtration, can prolong the membrane filtration cycle, improve the aquifer yield of film.Field, Decloux etc. study the constant current membrane filtration operation per capita, find that the constant flow filtering pattern has obvious advantages (referring to " Journal of Membrane Science " nineteen ninety-fives 100 volume 259-272 page or leaf, and " membrane science and technology " rolled up 1 phase 1-11 page or leaf in 1999 19) than constant pressure filtration pattern.
The Chinese invention patent publication number is: CN 1280873A, open day is January 24 calendar year 2001, name is called method and the relevant device that " method of constant-flow ultrafiltration and equipment thereof " discloses three kinds of constant-flow ultrafiltrations, is respectively the constant-flow ultrafiltration of regulating circulating pump (7-2) flow, control valve (8-3) switch size and using pulse pump.Yet the method for the constant-flow ultrafiltration of this patent disclosure and relevant device are at the control procedure of membrane bioreactor and equipment, its control procedure all needs to finish by manual operation, automaticity is low, the control procedure complicated operation, control accuracy is low, labour intensity is big, is difficult to satisfy the application that actual membrane is handled.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of control device of fully-automatic constant-flow super-filtering water treatment is provided, use this device can improve the constant current amount fully automatic operation of filtering accuracy, feasible system and on-line cleaning, energy consumption low, can reduce resistance of membrane filtration, prolong the membrane filtration cycle, improve the film aquifer yield.
For solving above-mentioned technology technical problem, the present invention is achieved in that
It comprises raw water box (24), polysulfone hollow fiber ultrafiltration membrane system (28), product water tank (31), security personnel's filter (26), described raw water box (24) links to each other with intake pump (19), intake pump (19) links to each other with security personnel's filters (26) by first magnetic valve (3), described security personnel's filter (26) links to each other with water inlet pressure transmitter (11) with flow of inlet water sensor (17), and flow of inlet water sensor (17) links to each other with polysulfone hollow fiber ultrafiltration membrane system (28) by water inlet (27) with water inlet pressure transmitter (11); Polysulfone hollow fiber ultrafiltration membrane system (28) links to each other with discharge pressure transmitter (13) by delivery port (30), and discharge pressure transmitter (13) links to each other with the 6th magnetic valve (8), water flow sensor (14) links to each other with product water tank (31); Milipore filter concentrated water spout (29) on the polysulfone hollow fiber ultrafiltration membrane system (28) is provided with dense water pressure transmitter (12), milipore filter concentrated water spout (29) link to each other with raw water box (24) with the 7th magnetic valve (9) by ball valve (33); Producing water tank (31) links to each other with delivery port (30) by backwashing pump (20), the 8th magnetic valve (10), the 5th magnetic valve (7); Raw water box (24) and product water tank (31) bottom are provided with the emptying ball valve; Described water inlet pressure transmitter (11), dense water pressure transmitter (12), discharge pressure transmitter (13) and water flow sensor (14) link to each other with analog quantity input module (15) respectively, described intake pump (19) links to each other with analog quantity input/output module (16) by frequency converter (18) with backwashing pump (20), and described flow of inlet water sensor (17) links to each other with analog quantity input/output module (16); Described analog quantity input module (15) links to each other with Programmable Logic Controller (2) with analog quantity input/output module (16), and Programmable Logic Controller (2) links to each other with magnetic valve respectively.
Described machine Programmable Logic Controller (2) links to each other with PC.
Described Programmable Logic Controller (2) links to each other with buzzer (21) with indicator lamp (22).
Described PC links to each other with printer (23).
The invention has the beneficial effects as follows:
The present invention have filtering accuracy height, technology advanced person, simple to operate, energy consumption is low, can reduce advantages such as resistance of membrane filtration, the constant current amount fully automatic operation and the on-line cleaning of feasible system can also realize Real Time Observation, storage record and printout to online monitoring data.
Description of drawings
Fig. 1 is an automatic control system structure flow chart of the present invention;
Fig. 2 is a fully-automatic constant-flow super-filtering water treatment system structure chart of the present invention;
Fig. 3 is the permeable flow of embodiment result's a film curve map over time.
The specific embodiment
The control device of fully-automatic constant-flow super-filtering water treatment of the present invention is to utilize PC and Programmable Logic Controller that the course of work of constant-flow super-filtering water treatment facilities is carried out on-line monitoring and control.Wherein, Programmable Logic Controller 2 is used for the executive system operational order, collect, storage system technological parameter and online monitoring data, compare with on-line monitoring water flow data from analog quantity input module 15, if data depart from the processing parameter setting value, then positive and negative according to what depart from, send instruction by Programmable Logic Controller 2, convert the digital quantity signal that system sends to analog quantity by A/D converter, output to frequency converter 18 through analog quantity input/output module 16, regulate the frequency of the motor of water inlet force (forcing) pump 19 by frequency converter 18, control the motor speed of water inlet force (forcing) pump 19, to reduce or to increase the output pressure of water inlet force (forcing) pump 19, thereby keep the stable of the permeable flow of milipore filter, reach the purpose of constant-flow super-filtering.
Milipore filter of the present invention is a hollow fiber film assembly 28, and its material can be polysulfones, polyether sulfone, Kynoar, polypropylene nitrile, SPSF, cellulose acetate, polypropylene or inoranic membrane etc.
Constant-flow ultrafiltration process of the present invention, be to serve as the control object, compare, as transmembrane pressure TMP during more than or equal to setting value by the higher limit that sets with the system process parameter with transmembrane pressure TMP, promptly start the waterpower cleaning operation, milipore filter is carried out on-line cleaning.
Waterpower cleaning operation of the present invention, comprise that from milipore filter concentrated water spout 29 to water inlet 27 forward expresses and oppositely stride from permeable lateral intake side the backwash of film, concrete cleaning process can be as required to expressing with the time of backwash and being provided with in proper order, two kinds of backwash modes can make up according to actual needs, thereby reach the purpose of effective cleaning milipore filter.
The operation of constant-flow super-filtering process of the present invention and waterpower cleaning process is all controlled and is realized by the first magnetic valve 2～switch of the 8th magnetic valve 10 in 2 pairs of ultrafiltration system pipelines of Programmable Logic Controller.
Constant-flow super-filtering process of the present invention can also realize on-line real time monitoring, storage record and printer 23 printouts by being connected with PC 1 of data such as milipore filter water inlet pressure, concentrated water spout pressure, delivery port pressure, transmembrane pressure TMP, flow of inlet water, permeate water flow.
The control device of fully-automatic constant-flow super-filtering water treatment of the present invention, mainly by the ultrafiltration water treatment system, PC 1, Programmable Logic Controller 2, frequency converter 18, analog quantity input module 15 and analog quantity input/output module 16 are formed, it is characterized in that first magnetic valve 2～the 8th magnetic valve 10 switching variables such as grade insert by the digital quantity input port of Programmable Logic Controller 2, milipore filter water inlet pressure, concentrated water spout pressure, delivery port pressure, flow of inlet water, the permeate water flow is respectively by pressure transmitter 11, pressure transmitter 12, discharge pressure transmitter 13, flow sensor 17 and flow sensor 14 insert the input of analog quantity input module 15 and analog quantity input/output module 16, the output of analog quantity input/output module 16 is connected with frequency converter 18, frequency converter 18 is connected with backwashing pump 20 with water inlet force (forcing) pump 19 respectively again, and wherein intake force (forcing) pump 19 and backwashing pump 20 are three-phase variable ratio frequency changer centrifugal water pump.
The control device of fully-automatic constant-flow super-filtering water treatment of the present invention, in running, its running status such as filtration, backwash, express etc. all can be given the indicator lamp 22 of control panel by Programmable Logic Controller 2 output data signals, if running occurs unusual, can report to the police for buzzer 21 by Programmable Logic Controller 2 output data signals.
Employed Programmable Logic Controller, analog quantity input module and analog quantity input/output module are commercially available among the present invention, can adopt SIMATIC S7-200 as Programmable Logic Controller, the analog quantity input module can adopt EM231, and the analog quantity input/output module can adopt EM235.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Employed Programmable Logic Controller is SIMATIC S7-200 among the present invention, and its CPU element is CPU226, self has 24 digital quantity inputs and 16 digital output ports.The analog quantity input module adopts EM231, has 4 analog quantity input ports.The analog quantity input/output module adopts EM235, has 4 analog quantity input ports and 1 analog quantity output port.Frequency converter adopts Siemens MMV420 type frequency converter.
Fig. 2 is an enforcement structure chart of the present invention, the former water of need handling by raw water box 24 after 19 pressurizations of water inlet force (forcing) pump, enter security personnel's filter 26 through first magnetic valve 3, flow through then flow of inlet water sensor 17 and water inlet pressure transmitter 11, enter milipore filter from the water inlet 27 of polysulfone hollow fiber ultrafiltration membrane system 28, permeate water by film is respectively through the delivery port 30 of polysulfone hollow fiber ultrafiltration membrane system 28, discharge pressure transmitter 13, the 6th magnetic valve 8, water flow sensor 14, be collected in and produce in the water tank 31, dense water passes back into raw water box 24 or discharge from milipore filter concentrated water spout 29 through ball valve 3 and the 7th magnetic valve 9, and the concentrate recirculation amount of ultra-filtration process can be controlled by regulating ball valve 3.Along with the carrying out of filtering, the transmembrane pressure TMP of milipore filter increases gradually, when reaching the higher limit of control system setting, promptly stops filter operation, starts the waterpower cleaning operation.Waterpower is cleaned and to be comprised that from milipore filter concentrated water spout 29 to water inlet 27 forward expresses and oppositely stride from permeable lateral intake side the backwash of film.During backwash, rinse water enters membrane module through backwashing pump 20, the 8th magnetic valve 10, the 5th magnetic valve 7 from delivery port 30 from producing water tank 31, oppositely see through film then and discharge through second magnetic valve 4 from water inlet 27, discharge pressure transmitter 13 feedbacks is exactly the backwash pressure signal value at this moment.After backwash finishes, start and express operation, be that rinse water is from producing water tank 31 through backwashing pump 20, the 8th magnetic valve 10, the 4th magnetic valve 6, dense water pressure transmitter 12, enter membrane module from concentrated water spout 29, forward is discharged through magnetic valve 4 from water inlet 27 by the film influent side then, and what this moment, dense water pressure transmitter 12 fed back is exactly to express the pressure signal value.In addition, inlet water tank 24 and product water tank 31 bottoms are provided with exhaust-valve 25 and valve 32.Through actual motion, native system is in running, and working stability, Fig. 3 are represented is this fully-automatic constant-flow super-filtering water treatment system through the permeable flow of 14h stable operation situation over time.
Claims (4)
1, a kind of control device of fully-automatic constant-flow super-filtering water treatment, it comprises raw water box (24), polysulfone hollow fiber ultrafiltration membrane system (28), produce water tank (31), security personnel's filter (26), it is characterized in that: described raw water box (24) links to each other with intake pump (19), intake pump (19) links to each other with security personnel's filters (26) by first magnetic valve (3), described security personnel's filter (26) links to each other with water inlet pressure transmitter (11) with flow of inlet water sensor (17), and flow of inlet water sensor (17) links to each other with polysulfone hollow fiber ultrafiltration membrane system (28) by water inlet (27) with water inlet pressure transmitter (11); Polysulfone hollow fiber ultrafiltration membrane system (28) links to each other with discharge pressure transmitter (13) by delivery port (30), and discharge pressure transmitter (13) links to each other with the 6th magnetic valve (8), and water flow sensor (14) links to each other with product water tank (31); Milipore filter concentrated water spout (29) on the polysulfone hollow fiber ultrafiltration membrane system (28) is provided with dense water pressure transmitter (12), and milipore filter concentrated water spout (29) links to each other with raw water box (24) with the 7th magnetic valve (9) by ball valve (33); Producing water tank (31) links to each other with delivery port (30) by backwashing pump (20), the 8th magnetic valve (10), the 5th magnetic valve (7); Raw water box (24) and product water tank (31) bottom are provided with the emptying ball valve; Described water inlet pressure transmitter (11), dense water pressure transmitter (12), discharge pressure transmitter (13) and water flow sensor (14) link to each other with analog quantity input module (15) respectively, described intake pump (19) links to each other with analog quantity input/output module (16) by frequency converter (18) with backwashing pump (20), and described flow of inlet water sensor (17) links to each other with analog quantity input/output module (16); Described analog quantity input module (15) links to each other with Programmable Logic Controller (2) with analog quantity input/output module (16), and Programmable Logic Controller (2) links to each other with magnetic valve respectively.
2, the control device of fully-automatic constant-flow super-filtering water treatment according to claim 1 is characterized in that: described Programmable Logic Controller (2) links to each other with PC.
3, the control device of fully-automatic constant-flow super-filtering water treatment according to claim 2 is characterized in that: described Programmable Logic Controller (2) links to each other with buzzer (21) with indicator lamp (22).
4, the control device of fully-automatic constant-flow super-filtering water treatment according to claim 2 is characterized in that: described PC links to each other with printer (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710017590A CN100577267C (en) | 2007-03-30 | 2007-03-30 | Control device for fully-automatic constant-flow super-filtering water treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710017590A CN100577267C (en) | 2007-03-30 | 2007-03-30 | Control device for fully-automatic constant-flow super-filtering water treatment |
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| CN101069815A CN101069815A (en) | 2007-11-14 |
| CN100577267C true CN100577267C (en) | 2010-01-06 |
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| CN200710017590A Expired - Fee Related CN100577267C (en) | 2007-03-30 | 2007-03-30 | Control device for fully-automatic constant-flow super-filtering water treatment |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2934049B1 (en) * | 2008-07-16 | 2010-10-15 | Millipore Corp | UNIT AND METHOD FOR PREPARING A SAMPLE FOR THE MICROBIOLOGICAL ANALYSIS OF A LIQUID |
| CN103347594B (en) * | 2010-11-26 | 2016-02-10 | Abb研究有限公司 | Control the method and system of the fouling in membranous system operation |
| CN102061723A (en) * | 2010-12-24 | 2011-05-18 | 天津市华澄供水工程技术有限公司 | Break tank of secondary water supply equipment |
| CN103657415B (en) * | 2013-12-26 | 2015-08-19 | 利穗科技(苏州)有限公司 | The hyperfiltration process of a kind of automatic ultrafiltration system under linear transmembrane pressure |
| CN103691322B (en) * | 2013-12-26 | 2016-03-30 | 利穗科技(苏州)有限公司 | A kind of automatic ultrafiltration system and the hyperfiltration process of this system under constant transmembrane pressure |
| CN103833108A (en) * | 2014-03-18 | 2014-06-04 | 北京林业大学 | Novel domestic ultra-filtration water purifier for removing arsenium (fluorine) |
| CN107617337B (en) * | 2016-07-14 | 2024-07-05 | 宁波乐惠国际工程装备股份有限公司 | Cross-flow filtration control method, cross-flow filtration device and cross-flow filtration system |
| CN107694345A (en) * | 2017-11-20 | 2018-02-16 | 海南立昇净水科技实业有限公司 | Water management system |
| CN113577865B (en) * | 2020-12-03 | 2022-07-12 | 安徽华塑股份有限公司 | Constant-flow filtering device for centrifugal mother liquor |
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- 2007-03-30 CN CN200710017590A patent/CN100577267C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| Influence of operating conditions on membrane foulingincrossflow microfiltration of particluate suspensions. Harit K. Vyas et al.International Dairy Journal,Vol.10 . 2000 |
| Influence of operating conditions on membrane foulingincrossflow microfiltration of particluate suspensions. Harit K.Vyas et al.International Dairy Journal,Vol.10. 2000 * |
| Performance of crossflow microfiltration during constanttransmembrane pressure and constant flux operaions. Harit K. Vyas et al.International Dairy Journal,Vol.12 . 2002 |
| Performance of crossflow microfiltration during constanttransmembrane pressure and constant flux operaions. Harit K.Vyas et al.International Dairy Journal,Vol.12. 2002 * |
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| CN101069815A (en) | 2007-11-14 |
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