炭吸附机械搅拌澄清池用于深度处理去除有机物  

Application of Carbon Adsorption Accelerator in Wastewater Advanced Treatment for Organics Removal

作　　者：刘志娟 LIU Zhi-juan(China United Engineering Co.Ltd.,Hangzhou 310052,China)

机构地区：[1]中国联合工程有限公司,浙江杭州310052

出　　处：《中国给水排水》2023年第14期109-113,共5页China Water & Wastewater

摘　　要：粉末活性炭可用于污水深度处理去除有机物,但是常用的接触吸附-沉淀工艺吸附效率低,沉降分离性能差,成本高,通常只用于应急投加。炭吸附机械搅拌澄清池通过大回流比的泥渣循环形成活性炭污泥层,粉末活性炭在污水中的浓度提升百倍,同时延长了粉末活性炭与有机物的接触时间,促使粉末活性炭吸附有机物接近饱和。与接触吸附-沉淀工艺相比,活性炭使用量降低40%以上,有效降低了药剂成本及污泥处理处置费用。另外,炭吸附机械搅拌澄清池可利用现有的机械搅拌澄清池改造,可同时进行有机物吸附和SS的澄清分离。投加粉末活性炭后,出水SS与之前基本持平,色度明显改善。采用炭吸附机械搅拌澄清池后,整体工艺流程短,节约用地且节省投资。Powdered activated carbon(PAC)can be applied in wastewater advanced treatment to remove organic matter,however,the common contact adsorption and precipitation process has low adsorption efficiency,poor sedimentation separation performance and high cost,and usually only used for emergency adding.The carbon adsorption accelerator forms activated carbon sludge layer through large reflux ratio of sludge circulation,thus the concentration of PAC is increased hundreds of times,and the contact time of PAC and organic matter is prolonged,which make organic matter adsorption by PAC close to saturation.Compared with the contact adsorption and precipitation process,the use of activated carbon is reduced by over 40%,effectively reducing the cost of agents and sludge treatment and disposal.In addition,the existing mechanical accelerator can be used to transform to the carbon adsorption accelerator,which can simultaneously remove organics and SS.After adding the PAC,the effluent SS was basically the same as before,and the chroma was significantly improved.After using carbon adsorption accelerator,the overall process is short,thus saving land and investment.

关 键 词：炭吸附机械搅拌澄清池 污泥循环 吸附 分离 粉末活性炭 有机物 

分 类 号：TU992[建筑科学—市政工程]