描述
近年来在城市污水处理的工艺中,投资少、运行灵活的SBR处理工艺得到广泛的应用。SBR(Sequencing Batch Reactor Activated Sludge Process)序批式活性污泥工艺早在1904年就被开发,并取得了较好的效果,只是由于当时的自动化水平和设备制造工艺的限制,所以没有得到推广应用。而近年来随着自动化技术及在线监测技术的飞速发展,为SBR工艺的发展和应用提供了前提条件,因为对污水处理工艺进行自动化监测和实时控制是提高污水处理效率、降低处理能耗的关键,所以SBR工艺也是各种污水处理工艺中对自动化系统要求较高的一种工艺。SBR反应过程主要是在生物反应池内进行的,该工艺主要由进水、曝气、沉淀、排水和闲置等五个阶段组成。SBR工艺的处理效果主要取决于其运行参数,其中主要参数包括各反应段时间以及曝气强度。一般采用以PLC为核心的工艺过程自动监控系统,实时控制鼓风机、水泵、电动阀等设备及各反应段时间,使水质达到国家规定的排放标准。
由此可见,SBR污水处理工艺是一个多参量(如液位、流量、压力、生物指标等)、多任务(如污水输送、风量控制、水泵的启停等)、多设备(如格栅机、水泵、鼓风机、阀门等)且具有随机性、时变性和耦合性的复杂系统。因此,应由稳定可靠的数据信息交换网络与综合管理系统来进行自动化的管理,使之安全可靠地运行。
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
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顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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