大武口污水厂脱水机滤布冲洗回用水系统改造后的效果评价

对宁夏大武口污水处理厂滤布冲洗水系统的改造原因和改造过程以及改造后的运行效果进行了详细的叙述和评价。

圆盘滤布脱水机滤布自动在线清洗系统研究与应用

本文分析了一种新型圆盘滤布脱水机的滤布超声波冲洗技术,提供超声波滤布清洗装置,解决粘附在滤布内部的细小酸不溶物质。劣质石膏浆液的成分复杂,杂质来源广泛,滤布堵塞和附着杂质的特性对滤布清洗技术研究十分重要,研究恶劣石膏浆液中的各种杂质和堵塞机理,对滤布冲洗效果有较大意义。

真空皮带式脱水机与圆盘式脱水机经济性对比

脱水机是湿法脱硫公用系统的主要设备之一,近几年,越来越多的新建脱硫项目开始倾向于采用滤布圆盘式脱水机。文章对真空式脱水机和滤布圆盘脱水机在能耗、检修费用、占地面积、脱水效果等方面进行了对比,滤布圆盘脱水机整体电耗比皮带脱水机低约60%;年检修费用略低于皮带脱水机;占地约为皮带脱水机的37.5%。通过综合对比,滤布圆盘式脱水机在经济性上优于真空皮带脱水机.

Influence of Filter Cloth on the Cathode on the Electroosmotic Dewatering of Activated Sludge

The mechanical dewatering of activated sludge is troublesome due to its high compressibility of solids. The dewatering can be enhanced dramatically by the use of electroosmosis,in which an electric field is applied to the sludge cake.In this study,the influence of filter cloth on the cathode on the dewatering of activated sludge was investigated.It was found that thicker filter cloth led to lower water removal from the sludge cake,so a stainless steel cathode net with small pore size instead of filter cloth was applied,which improves the dewatering efficiency and reduces the electric power consumption.Moreover,water absorbent materials were helpful to remove the water from the sludge cake.For the electroosmotic dewatering at 7 kPa and 24 V·cm-1,the water content in the sludge cake decreased to 60%(by mass) with the average 0.075 kW·h·kg-1of water removed by using the cathode net.