拌和系统高浊度废水处理自动控制系统研究与应用

混凝土用粗骨料经过二次筛分后产生大量高浊度水,有时浊度甚至高达140000 NTU,而且此类废水成分主要含石粉、泥土和少量油脂.处理此类废水的水处理厂辅助设备多,要求设备的运行可靠、及时,否则可能因管道堵管、净水药剂添加不准而导致整个水处理系统循环过程崩溃的后果.介绍了一种针对此类水处理厂的电气自动控制系统,包括上位机监控软件的设计思想;下位控制单元及现场控制单元的配置及控制算法.     

北京金石佳业净水设备制造有限公司量身定制农村水厂净化工艺方案

北京金石佳业净水设备制造有限公司专业制造各类净化水设备,有着10多年的水净化处理经验,有着一支专业而务实的工程队伍,对水处理设备的设计制造和安装服务均有独到之处.多年从事农村供水净水工艺设计工作,经历颇多,体会也颇多.     

μxL集散控制系统在净水工艺中的应用

为了对净水工艺实现优化控制,哈尔滨市沙曼屯水厂30万m~3/d净水工艺系统首家采用了μxL集散控制系统(DCS).该系统可以对净水工艺的投药、沉淀池运行与排泥、滤池运行与反冲洗、投氯、泵站运行等水处理单元,分别实现前馈控制、反馈控制、顺序控制.并能对净水工艺过程进行集中管理,以及与上位计算机通信.     

一体式膜生物反应器用于中水处理的经济效益分析

根据调研和试验运转参数 ,对一体式膜生物反应器的设备投资、占地费用、处理成本、节水效益和投资回收期进行了分析 ,得出了一体式膜生物反应器用于中水处理时 ,具有技术、管理、经济效益上的综合优势的结论。     

2017 GDWater广东水展搭建净水行业产销平台

<正>为了将末端净水产品更多地推广到健康用水市场,由上海荷瑞会展公司主办的2017GDWater广州国际水处理技术与设备展览会(广东水展)将于3月5—7日在广州市海珠区保利世贸博览馆举行,届时将吸引到800多家优质展商及40000多名专业观众参加。本届广东水展主要推出四个主题:末端净水展、膜与水处理展、污水处理展及泵阀流体专区。其中末端净水展凭借其     

《北京水务》期刊参加2010中国国际水技术展览会

2010年中国国际水技术展览会于3月31日至4月2日在国家会议中心召开,来自终端净水设备、膜组件及其他水处理设备的国内外100余家厂商参加了本次展会。     

海南立昇科技实业有限公司以PVC为原料的合金毛细管式超滤膜

海南立昇科技实业有限公司是一家集水处理科学技术研究,超滤膜及其组件、家庭净水设备制造、销售和服务为一体的高科技企业,在海南和苏州建有世界最大的超滤膜及其设备的研发和制造基地,具备年产300万m2优质超滤膜的生产能力.     

膜产品及膜过滤方式介绍

膜法水处理技术被称为"21世纪的水处理技术",在净水处理领域中具有广阔的应用前景.过去膜法水处理技术主要应用于纯水、超纯水的制取,近年来随着膜技术的发展,其成本大大降低,已逐步渗透到生活饮用水领域.     

量身定制农村水厂净化工艺方案

北京金石佳业净水设备制造有限公司专业制造各类净化水设备．有着10多年的水净化处理经验．有着一支专业而务实的工程队伍，对水处理设备的设计制造和安装服务均有独到之处。多年从事农村供水净水工艺设计工作．经历颇多．体会也颇多。其中认为“因地制宜．为农村水厂量身定制净化工艺方案”是关键。     

金盾供水

<正>开封金盾压力容器设备有限公司地处历史文化名城,七朝古都开封市所辖的开封黄龙产业集聚区;西距市区中心仅10公里。公司北临陇海铁路,距途经开封的四条高速公路入口处仅7公里,地理位置优越,交通便利。我公司成立以来全力打造净化无塔供水、一体化净水设备、除铁、除锰、除氟、除砷、各种大型水处理工程设计、制造、施工、安装、民用无塔供水、高层无负压供水设备、移动净水设备、校园直饮水设备、简易应急供水设备。公司十年在水处理行业取得五项专利。金盾产品具有技术含量高、质量稳定等优点。我公司拥有一批专职高级     

Floating treatment wetlands for domestic wastewater treatment

Floating islands are a form of treatment wetland characterized by a mat of synthetic matrix at the water surface into which macrophytes can be planted and through which water passes. We evaluated two matrix materials for treating domestic wastewater, recycled plastic and recycled carpet fibers, for chemical oxygen demand (COD) and nitrogen removal. These materials were compared to pea gravel or open water (control). Experiments were conducted in laboratory scale columns fed with synthetic wastewater containing COD, organic and inorganic nitrogen, and mineral salts. Columns were unplanted, naturally inoculated, and operated in batch mode with continuous recirculation and aeration. COD was efficiently removed in all systems examined (>90% removal). Ammonia was efficiently removed by nitrification. Removal of total dissolved N was ～50% by day 28, by which time most remaining nitrogen was present as NO(3)-N. Complete removal of NO(3)-N by denitrification was accomplished by dosing columns with molasses. Microbial communities of interest were visualized with denaturing gradient gel electrophoresis (DGGE) by targeting specific functional genes. Shifts in the denitrifying community were observed post-molasses addition, when nitrate levels decreased. The conditioning time for reliable nitrification was determined to be approximately three months. These results suggest that floating treatment wetlands are a viable alternative for domestic wastewater treatment.     

脱墨废水处理工程实例

介绍絮凝气浮-UASB-接触氧化工艺在处理脱墨废水中的应用。运行结果表明,进水CODCr=5000mg/L,BOD5=2000mg/L,SS=2500mg/L时,出水达到《污水综合排放标准》(GB8978-1996)的一级排放标准。     

饮用水深度处理技术现状及工艺比较

介绍了目前国内外应用的几种饮用水深度处理技术的现状,比较了这几种技术在使用中的优缺点及存在的问题.可供不同水源和出水水质深度处理时参考,展望了未来饮用水深度处理技术的趋势.     

净水厂生产排泥水处理工艺研究与设计

通过对净水厂生产排泥水的产生和水质特性进行分析,确定沉淀池排泥水和滤池反冲洗废水为净水厂排泥水的主要组成,结合设计干泥量的计算确定排泥水处理规模,在分析排泥水处理系统工艺流程布置特点的基础上对排泥水收集、调节、浓缩和脱水工艺进行分析,并对其中排水池、排泥池、浓缩池、平衡池、脱水工艺和场地布置的设计要点进行总结。     

纳滤深度处理在饮用水厂的应用与实践

张家港市第四水厂以长江水为原水,采用混凝沉淀超滤纳滤的双膜深度处理工艺,日处理规模为20万m3,出水水质远优于国家《生活饮用水卫生标准标准》(GB 5749-2006)和地方标准《江苏省城市自来水厂关键水质指标控制标准》(DB32/T 3701-2019).水厂核心单元纳滤系统结合超滤预处理表现出优越的工艺性能,能去除常规工艺难以去除的有机污染物,提供高品质饮用水.水厂在纳滤水厂建设、设备安装调试、工艺稳定运行等方面开展了大量的实践工作.     

Improvement of wastewater treatment performance of the Fukashiba treatment plant.

The Fukashiba Treatment Plant Kashima Rinkai Specified Sewage Works has received wastewater from the petrochemical complex (90%) and public sewage of Kamisu and Hasaki town (10%). For this reason, the plant is facing many difficulties in producing good quality effluent. In order to solve these difficulties, we are reviewing the treatment performance and making efforts for its improvement with nitrification inhibition, control of bio-persistent substances and the PRTR approach.     

土地处理系统在尾水处理回用中的应用

土地处理系统充分利用了土壤-植物-微生物系统的净化能力,既可去除水中有机污染物,又可去除造成水体富养化的氮、磷等污染物.以济南市水质净化一厂为例,探讨了土地处理系统处理尾水的可行性.尾水处理后回用于黄台电厂,缓解了水资源的紧缺程度,符合当地水资源开发利用的政策,具有一定的环境、经济和社会效益.     

橇装生物处理装置在油田采出水处理中的应用

针对新疆油田边缘区块采出水特性,选定3种石油降解菌红球菌作为处理含油废水的高效优势菌种,用基于"回转悬浮生物床技术"的含油废水橇装生物处理装置处理石西油田采出水,结果表明:设计处理量为1 m3/h的装置,实际运行时最大可处理水量为4 m3/h、进水中CODCr300 mg/L时,出水一般稳定在20～60 mg/L,CODCr去除率一般在58%～80%甚至更高;出水中挥发酚、石油类浓度分别为0～0.29 mg/L、0.2～1.4 mg/L,达到《污水综合排放标准》(GB 8978—1996)中的二级标准,废水停留时间可缩短至4～5 h,表明回转悬浮生物床技术及其橇装装置对油田采出水有很好的处理效果。     

城市污水再生利用的原位处理与集中处理分析与实践

北方某城市区域面临污水处理能力增加、河道生态补水及相关管网建设问题.通过对污水集中处理与原位处理的技术经济比较,确定采用原位处理.河道补水点附近将地下泵站改建为河道生态补给站,处理能力0.6万m3/d,就地处理就地补水;污水处理厂仅扩容2万m3/d,出水满足一级A标准;整个工程无需进行管网的新改扩建.河道生态补给站和污...     

Reuse of drinking water treatment sludge for olive oil mill wastewater treatment

Olive mill wastewater (OMW) results from the production of olive oil, which is an important traditional agro-industry in Mediterranean countries. In continuous three-phase centrifugation 1.0-1.2 m(3) of OMW are produced per ton of processed olives. Discharge of OMW is of serious environmental concern due to its high content of organic matter with phytotoxic properties, namely phenolic compounds. Meanwhile, drinking water treatment sludge (DWTS) is produced in high amounts and has long been considered as a waste for landfill. The aim of this work was the assessment of reusing DWTS for OMW treatment. High performance liquid chromatography (HPLC) analysis was carried out to determine the phenolic compounds present and to evaluate if they are recalcitrant. Treatability assays were performed using a dosage of DWTS from 50 to 300 g L(-1). Treatment efficiency was evaluated based on the removal of chemical oxygen demand (COD), biochemical oxygen demand (BOD), total solids (TS), total suspended solids (TSS), total volatile solids (TVS), oil and grease (OG), phenols (total phosphorous (TP) and HPLC fraction). Results from OMW HPLC characterization identified a total of 13 compounds; the major ones were hydroxytyrosol, tyrosol, caffeic acid, p-cumaric acid and oleuropein. Treatability assays led to a maximum reduction of about 90% of some of the phenolic compounds determined by HPLC. Addition of 200-300 g L(-1) of DWTS reduced 40-50% of COD, 45-50% of TP, a maximum of nearly 70% TSS and 45% for TS and TVS. The OG fraction showed a reduction of about 90%, achieved adding 300 g L(-1) od DWTS. This study points out the possibility of establishing an integrated management of OMW and DWTS, contributing to a decrease in the environmental impact of two industrial activities, olive oil production and drinking water treatment.