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    һרҵṩҵƵվ2002ΪڶͻṩҵơĶƵȷӮڶͻΪרערҵдʦ󲿷ȫ211/958ȸУIJʿ˶ʿƣִʣĿǰΪ5000λͻд⡣ ûΪģΪûֵվӵ޷Խӵۺϵҵɺרҵʦһһ޸ƣдͬѧһһĸ,Ϊ˳ҵݻ
    ҵ

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    ʱ䣺2020/06/05 Դδ֪ ߣĶ
    ,ˮԴճԽԽҪ,ԽԽ.,ҹڵˮԴƶĹ,ҹĵˮԴԼǧ, 1000 ׵ĵˮԴǵˮ.
    Ϊƪģ

    ժҪ

    ,ִҵٷչ,лչ̲ϼӿ,Ҳһ׶:ŷŵеˮԽԽ,ⲻӰ쵽ǵĽ,Ⱦ˱ϡȱˮԴ,ӶӰǵԼõĿɳչ.ĿǰˮȾϾ,ҪĿˮĿһ,ӴоͶ.Թҵˮ PLC ϵͳоĿǰĹҵƼӦнΪ,źܸߵӦüֵ,ڹҵչ˺ܴ.ҹĿǰΪձˮΪо,Ƴһʺϴҵˮ plc ϵͳ.һ,Ƿˮ,Ӷг빤ӦĿƷƷ.ڶ,ȷĿƷ PLC Ӳѡͼ,ӲѡͰѡʺϵ PLC ͺӦչģ,ҪƿĿƳ͹Ҫ漰Ҫ PH ֵģĿƳ,Ҳ PID 㷨Զϵͳеģ.ƵҪĿľΪʵֶˮչеҪĿƺ͹.оΪ˸ƻᾭЧ,ҶһЩˮнͲο.

    ؼ: PLC Զ ˮ

    Abstract

    Nowadays, the rapid development of modern industry and the rapid developmentof urbanization, but also brings a malpractice: the amount of sewage discharged intothe environment is more and more, which not only affects people's physical andmental health, but also pollutes the scarce water resources, which seriously affects thenormal life of people and the sustainable economy. Continued development. Based onthe severe situation of sewage pollution at present, we should focus on the sewagetreatment project and increase investment in its research. The research on the PLCcontrol system for industrial sewage treatment is very popular in the current industrialcontrol and application. It has a high application value and plays a great role in theindustrial development. In this paper, a PLC control system which is suitable forindustrial wastewater treatment is designed based on the current sewage treatmentplant in China. The first step is to analyze the present sewage treatment process, so asto list the control plan and design method corresponding to the process. In the secondstep, the hardware selection and software programming of PLC are carried out. Theselection of hardware includes the selection of the suitable PLC model and theconfiguration of the corresponding expansion module. The software programming ismainly the control program of the switch quantity and the control of the value of theimportant parameters, such as the PH value and the oxygen content of the importantparameters, which are mainly involved in the process. The program is programmed,and digital PID control algorithm is adopted to automatically control the analogquantity in the system. The main purpose of the design is to realize the control andmanagement of the main steps in the process of sewage treatment. The purpose of thisstudy is to improve the environment and social and economic benefits, and to drawlessons from some sewage treatment plants.

    Key word: PLC;automatic control;sewage treatment

    Ŀ¼

    һ .............................................................................................................................1

    1.1 о ............................................................................................................1

    1.2 ˮԶϵͳڡо״............................................................2

    1.3 Ҫо ...............................................................................................3

    ڶ ˮ̱ضķ................................................................................4

    2.1 ̵Ĺ̼ ....................................................................................................4

    2.2 ϵͳ ........................................................................................................5

    ϵͳӲ .......................................................................................................8

    3.1 ҺλƵѡ ................................................................................................................8

    3.2 ѡ ............................................................................................................9

    3.3 ڷѡ .............................................................................................................10

    3.4 PH Ƶѡ ................................................................................................................11

    3.5 ܽǵѡ ..........................................................................................11

    3.6 Ƶѡ .............................................................................................................12

    3.7 ѡ .............................................................................................................13

    3.7.1 ѡͷ .............................................................................................13

    3.7.2 PLC ģ ..............................................................................................................14

    3.7.3 PLC I/O ȷ ..........................................................................................14

    3.7.4 PLC ⲿͼ ......................................................................................15

    ϵͳ .......................................................................................................17

    4.1 ͼ .................................................................................................................17

    4.2 PLC Ƴıд ..................................................................................................18

    4.2.1 ģ ......................................................................................................18

    4.2.2 .................................................................................................................20

    4.2.3 ֶƳ P2 ................................................................................................20

    4.2.4 ԶƳ P1 .................................................................................................22

    .........................................................................................................................................28

    л.........................................................................................................................................29

    ο.................................................................................................................................30

    ¼ ͼ...........................................................................................................................31

    һ

    ,ˮԴճԽԽҪ,ԽԽ.,ҹڵˮԴƶĹ,ҹĵˮԴԼǧ, 1000 ׵ĵˮԴǵˮ.ǸоҹˮԴǴ൱ɹ۵,ҹ˿һ,,˾ˮԴռز, 2220 ,˾ռķ֮һ.Ŀǰ,ҹˮԴڲϵʧ,ҹȺˮҲûнԼʶ,˷ˮԴȲ.ɴ˿Կ,ˮԴĶȱʵ͵ѾԼҹľ÷չִлķչĽ.

    ҹˮҪDzڳеķչ,ŽЩйҵĿԽԽ,ҵˮŷҲ,ˮԪغˮʸӶ,еˮʼЩ,Чǿ,ﲻƶĹҵŷű׼.,µĵˮԴͻܵЩδ괦ˮȾ.,ǿˮֶ,ƶ񻯵ˮü޵.Ҫ뱣ͽˮԴ,Ҫˮѭ.ҵˮ,ҲǹҵŷŵȾˮ.ҹ,аٷ֮ʮķˮŷǹҵˮ.ԹҵˮȾķҹص֮һ.ҵˮкɷֵ,´ֳ,ˮ豸еʮֵij,Ի PLC ˮϵͳܱ֤ˮԱȫЧ.

    1.1 о

    ԴҹˮĿ,ˮһЩصķ,оһˮϵͳ,Ҹϵͳиܺ͸߿ɿص.ϵͳͨ缼plc Լ̬ȼˮعҪʵв״̬ܹܵĿƺͼ,һﵽ˱ܺĺ˹,ӶʵӾЧͼŽܵĿ.

    ҹһȱˮĹ,ҹˮ滮Ҫ,ˮͨˮͨʵȴ,˿Իڳй̻ȵط,ˮˮҪ󲻸ߵij,һͿЧҹˮԴ.

    1.2 ˮԶϵͳڡо״

    ,ҹøٷչ,ȾҲ,˿,ˮһ,Ͷ˴о,Ͳ,ҹͶҲѷɫ.,ŷȵˮĿһ鶼ȡ˲ijɹ,۵Ĵ¡յоԶϵͳзЩֶкܺõı.,һЩھ˼ʮһյIJиŬ,ߴٷ֮ʮˮʵĺΰĿѾʵ,ɹЧĽ˳еĹҵˮȾ.ͬһʱ,һЩұɫѾʼзˮõĿ,ɫĿǰﵽ˰ٷ֮ʮˮ.

    ҹˮҲͶ˺ܴľ,δܳһʱˮĿͶҲӴ.ӱʡˮͻҵҹصע,õĻӰ쵽׶Ļ.⿿رȾҵȻԶԶͲе,ҪӸȾ,ⱾһõĹ.,ҲΪҹˮҵṩ˾޴Ļս.ҹˮľ޴гռһϯ֮,ҹˮҵúú˼ʵʵ.ֻг֮ԺͶ뵽ؼоȥ,ҹˮĿϵ.

    ҵˮȾҹѾ˺ܾ,زⷽҲ˺ܶIJ,ȷ˱Ϊҹһ.֮,ҹչ""Ĺ,ͬҲ˺ԵЧ.ڻۺʹշҹȲ,,ӵеĻԪ豸ȽԶϵͳ.

    Ŀǰ,ҹˮ״:ֶԶĶ,ͬʱƺװ.ͨǷдԿϵͳӲǴӹԭװ,޷ȫļ.׾Ƴ÷۳ԱСˮͻ,DZ׼ȷԽϲ,й豸ĵٻᵼ³ˮˮʳֲ.DZΪʽõĹһЩ豸.ͬʱ,ԵԭҲᵼ.

    ,ҹһЩˮԱȽϸ߼,еĻֽˮպ;з,еĻỨʽ󡢵¹ȹҵij׵ˮԶϵͳҪӲ.豸׵,װúϵͳϽϺ,ٿҲǿ.ϵͳҲʵԶ,ϵб֤ųˮ߶߶ˮʱ׼.ڼһϾͺԼ,ҪʽƸļԱά,豸ºܿ,ѵijɱ汶.

    ҹĻо͹յĴº͹Ƚ,ĵԪ豸ԿϵͳЩ,Ⱦ̺Ȳ.ҹеˮ豸ȫʵȫԶ,ֻʵֲֵԶƺֳ.,ҪӶˮĿоʱСȽˮIJ,ӶǿҹӰ.

    1.3 Ҫо

    PLC ϵͳеˮĿӦõķо,ӶƳһˮԶϵͳ,ϵͳƼؼķ.ѡʵˮ,ˮʵ,ͨԿϵͳ˾Ĺܼܺؼķ,˿ϵͳļطͽṹ.ˮϵͳӲ.DZϵͳķ,PLC ص͹ԭ,ͳƸ豸 I/O ,Դ˹ PLC ѡͺ͵ַ,ʵ PLC ݲɼ,豸õѡ.Ӷʵ˶ϵͳĸЧ.

    ڶ ˮ̱ضķ

    ˮĿϵͳ¸Ӷ,ҲˮĿƹ̺һĿϵͳͬ,ͬʱӵ˳ƺʵʱ,ģͬ,ƻ·ſƺͱջ.Ȼ,ˮĿϵͳҲIJ֮ͬ:ĿƶIJ PH ֵ.ҪﵽЩԤڵĿЧ,ۺϵͿƸεĴʱһЩ豸Ĺ״̬.ɴǿԿ,ˮҪĿϵͳʮӴ,ĿǰȽˮĿϵͳ,Ƽʮ·ģڻ,԰·Ŀ,Ȼ,ڶıҪһʱ߼˳ϵΪоȷIJ͵ڵ.

    2.1 ̵Ĺ̼

    ĿǰҵˮķҪ漰ѧķ.,Ϊ,ĹԭҪͨˮеĹ.ͨΪˮ̵ij׶,ΪԤ.ˮҪӦõķǻѧ﷨,ͨҺˮ PH ֵ,ˮ,Щ߷ˮе΢ֽתˮел,ʹǾתΪ̼޻.﷨ˮҪͷ,ྻǿ,ҽԼʽõ.ˮ,ͨʹЩˮ,˲ͬˮ.

    ˮҪοָˮʲ,ˮĿϵͳڴԸˮʲп.,ԽӵˮԶϵͳ,Կϵͳ漰ҲԽ.

    ƵһˮϵͳĹͼ 2-1 ʾ.

    ͼԿ,̴·Ϊ:ϵͳϵͳϵͳ.ҽһ.

    2.2 ϵͳ

    (1)ϵͳ

    ϵͳⲿҪˮй,ͨȽϴָդǰҺλжϴָդǷйĶѻ,Һλֵڰٷ֮ʮʱ,PLC ϵͳԶֹͣˮˮ,ָդ,ѻϵĹɾ.Ͻ´ָդλ,ʱϵͳ⵽ǰҺλСڰٷ֮ʮ,ϵͳԶˮ.dzɰز,ϵͳ⵽ɰصҺλҺλ洢 90%ʱ,Զˮֹͣ,ʼɰسɰ,ɰʱ趨Ϊ 10s,趨ʱϵͳԶɰصijˮҺλ½ٷ֮ʮʱ,ϵͳ⵽رճɰسˮ,ͬʱתۻ,ɰʣĹɳ.

    (2)ϵͳ

    ⲿִϵͳ߷ˮе΢ֽתˮел,ʹǾתΪ̼޻.΢Կͨ߷ˮڵԼˮ PH ֵʹˮΪʵ.صˮﵽܷˮ洢 90%ʱϵͳԶʼ 20s ղֹͣɰسˮ,ڼ,ϵͳʵʱڵ PH ֵ, 50%ʱԶر,ͬʱ,ϵͳ⵽ PH ֵС 8 Զҩڵ PH ֱֵ PH 8,رռҩ,ɱ֤΢.ս֮,ϵͳԶسˮ,ҺλΪ 0 ʱɰسˮ.

    (3)ϵͳ

    ųķˮ,ڳصˮﵽˮİٷ֮ʮʱϵͳԶرˮ.صijʱΪ 20s,20s ˮˮʣ 10%ʱԶرˮ,ͬʱ,صײʼˮػ.

    ʵ˿ϵͳԶ֮,ƵˮϵͳԸصĵֶ.Ӧť,ö,Ӧرհť,ֹͣ.ͼ 2-2-1,2-2-2,2-2-3 Ϊϵͳ·ͼ.























    …………ڱƪϳ,ʡ,ϸȫļĩ

    ΪڼµĶԻ PLC ƵˮϵͳIJо,ˮˮĴˮĹ,Ƴһ PLC Ƶˮϵͳ.ϵͳҪͨҺλPH ֵģIJɼϵͳʵԶƲҲ PID 㷨ʵֶģĿ.ʵ˿ϵͳԶ֮,Ƶˮϵͳĸؾֶرеķż,Ӧť,ö,Ӧֹͣť,ֹͣ.

    ҪɵĹ:

    (1) еˮҪƳһ׹ҵˮ PLC ϵͳ.

    (2) ѧϰ GX Works2 ༭ PLC ƳͼҪֽ˽ͼ.

    (3) Żһ˵.

    ֪,ҵи,,ҵˮҲжȾ,ɫȾ޻ȾȾ.ͬʱ,ڴҵˮ,һļѶ.յı䶯ˮˮʺͱ߽кܴӰ.,ҵˮкɷֵ,´ֳ,ˮ豸еʮֵij,Ի PLC ˮϵͳܱ֤ˮԱȫЧ.

    л

    л××××ѧ,л××××ѧԺĸλʦ⼸׻׻̵.ҵĵʦ××ʦĹػϤָ²ŵɵ.×ʦǵݿγ̵ڿʦ,Ԩרҵ֪ʶ,ɹиǺָܶͰ.һʼʦʱ,ǶЩִ,Ϊǻеѧ, PLC һ˽IJ,ѡĿ뷨ҲһƬհ.ʦǶ࿴,ҵԼ뷨.ڴ°ѧûпγ̰,ɢDZҵƽһֱ,ʦҲż,ǿʼϸҪ,ɳǰһ,ʵǺʦæµӰ.ʦÿ춼Ҫǵѧϰƽ,ÿһʱǴҶҪһλִ̽ҵ,ҳƳֵ.,ƵǴһŬijɹ,,Ҫлҵĵʦ,кܶҵͬѧ.

    ⼸µ,Ķ,ںʦͬѧǵĽ,PLC ˽Ҳ,ѧϰ鱾Ķ.

    ,л××××ѧ,л××××ѧԺĸλʦ 4 Ľ̻,лڼ×ʦϸҪϤָ,лҵÿһͬѧ.ǵĹָ֧Һǿ,Ժڹ,ҵȡøõijɼ.
    ο
    [1].Ƽ PLC ̬ˮĿӦ[J].ԶDZ ,2016,26(04):36-40.
    [2]һܾ.2003 껷״[R].й,2004.
    [3]ӡ.ˮ.:ѧҵ,2008:7-192.
    [4].ҹˮ״ʩ[J].罨.2013,20(4):312-312.
    [5].ڳˮ״չ[J].ֲ.2005,12(5):25-27.
    [6]ܻ.ˮԶϵͳʵ[D].Ϻ:ѧ,2011.
    [7]ղ,֣Ƽ,µ. PLC Ĵˮϵͳ[J].dz봫 ,2015(06):48-52.
    [8],ij.ڹҵ̫ PLC ˮϵͳ [J].ԶDZ ,2011,26(06):28-32.
    [9]ѩ.ˮ״¼չ[J].йƼݺ.2013,6(12):12-13.
    [10]. PLC ̬ˮҩԶϵͳ[J].ԶDZ ,2013,24(06):18-22.
    [11]뽣. PLC Ƶˮϵͳ[D].մѧ,2013.
    [12]⽨. PLC ˮϵͳ[D].人ѧ,2015.
    [13]. PLC ˮԶƼ㷨о[D].ѧ,2016.
    [14]. ˮԶϵͳз[D].ѧ,2016.
    [15]ˬ. Сˮ豸ϵͳ[D].ɽѧ,2016.

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