sewage treatment
The paper introduces a distributed control system of sewage treatment, and the core of the system is PLC. The structure of the control system, the assignment and implementation of the tasks, the control scheme and the design concept of program are expounded. The way of central monitoring management and dispersing control is used by the control system; the long一distance control and monitoring of field equipment are uncharged of the upper computer; the software program of designs uses Intouch7. 0. The specific technology, equipment, the controlling of main parameter and several running data are uncharged of the PLC stations, and the software program of designs uses Concept 2. 2XL with online tracking and outline simulating. MB+ net is adopted by the communication between the upper computer and the PLC stations, with its simply building net, quickly running and stable communication. The automatic control of PLC has been successfully completed in sewage treatment, which has improved the operation efficiency and management level of sewage treatment equipment
Introduced to take PLC as the distribute type control system of core in the wastewater treatment system of apply。Concretely described the structure, mission of the control system an allotment and carry out, the way of control and the thought of the program design. The way controled the concentration monitor of the system adoption a management and scattered a control, the place of honor machine be responsible for the spot the long range of the equipments control and surveillance, software adoption Intouch7. 0 draw up.The PLC native station is responsible for to the concrete craft, equipments and is mainly controled parameter to carry on control and collect various movement data, the program design adoption have on-line follow with off-line imitate the Concept of true function 2. 2 XL software.Place of honor machine and of the PLC adoption set the net be quickly simple and circulate speed, correspond by letter the stability strong MB+net.The whole control system successfully solved the PLC controls a problem in the automation within wastewater treatment and raised a wastewater treatment equipments to circulate an efficiency and manage level.



介紹了以PLC為核心的分布式控制系統(tǒng)在污水處理系統(tǒng)中的應(yīng)用。具體敘述了控制系統(tǒng)的結(jié)構(gòu)、任務(wù)分配及實(shí)現(xiàn)、控制方式和程序設(shè)計(jì)思想.控制系統(tǒng)采用集中監(jiān)測(cè)管理、分散控制的方式，上位機(jī)負(fù)責(zé)現(xiàn)場(chǎng)設(shè)備的遠(yuǎn)程控制和監(jiān)視，軟件采用Intouch7. 0編制。PLC本地站負(fù)責(zé)對(duì)具體的工藝、設(shè)備、主要被控參數(shù)進(jìn)行控制及采集各種運(yùn)行數(shù)據(jù)，程序設(shè)計(jì)采用具有在線跟蹤和離線仿真功能的Concept 2. 2XL軟件。上位機(jī)與PLC之間采用組網(wǎng)簡(jiǎn)單、運(yùn)行速度快、通信穩(wěn)定性強(qiáng)的MB+網(wǎng) 。整個(gè)控制系統(tǒng)成功地解決了PLC在污水處理中的自動(dòng)化控制問題，提高了污水處理設(shè)備運(yùn)行效率和管理水平。
近年來，為了實(shí)現(xiàn)高質(zhì)量、低消耗、穩(wěn)定可靠的運(yùn)行。國(guó)內(nèi)外許多污水處理廠采用了現(xiàn)代先進(jìn)控制技術(shù)和計(jì)算機(jī)技術(shù)，從而構(gòu)成計(jì)算機(jī)監(jiān)督、控制、管理系統(tǒng).使系統(tǒng)優(yōu)化運(yùn)行。而可編程邏輯控制器（PLC）則是以微處理器為核心。綜合了計(jì)算機(jī)技術(shù)自動(dòng)控制技術(shù)和通信技術(shù)而發(fā)展起來的一種新型、通用的自動(dòng)控制裝置。具有結(jié)構(gòu)簡(jiǎn)單、性能優(yōu)越、可靠性高、靈話通用、易于編程、使用方便等優(yōu)點(diǎn)等。銀川市第一污水處理廠采用了SBR工藝及以PLC為核心的控制系統(tǒng)，日處理污水10 x 104 t處理后的達(dá)標(biāo)污水可用于農(nóng)業(yè)灌溉。
1 控制系統(tǒng)結(jié)構(gòu)