物理调理法改善污泥脱水性能研究进展  

Research progress in the improvement of sludge dewatering by physical conditioning

作　　者：叶新合 刘军伟 策红军 王锐 YE Xinhe;LIU Junwei;CE Hongjun;WANG Rui(Zhengyang County Environmental Protection Bureau,Zhumadian 463600,China;Luoyang Lvchao Environmental Protection Technology Co.,Ltd.,Luoyang 471000,China;College of Environmental Engineering and Chemistry,Luoyang Institute of Technology,Luoyang 471023,China)

机构地区：[1]正阳县生态环境局,河南驻马店463600 [2]洛阳绿潮环保科技有限公司,河南洛阳471000 [3]洛阳理工学院环境工程与化学学院,河南洛阳471023

出　　处：《工业水处理》2022年第8期51-59,共9页Industrial Water Treatment

摘　　要：采用活性污泥法处理城市废水和工业废水时会产生大量剩余污泥,其中含有病原体、重金属、有机污染物等有毒物质,如未经适当处置可能会产生严重的环境风险。脱水作为污泥处理的重要步骤,在减少污泥体积、方便运输、提高热值、减少垃圾填埋场渗滤液产生等方面发挥了重要作用。物理调理技术通过加入非化学调理剂或输入能量等方式改善污泥脱水性能,经济性好,应用广泛。而探寻高效物理调理剂与方法对于提升脱水效率至关重要。详细分析了物理调理技术的种类,归纳了典型物理调理技术,如多孔材料调理、超声波、热处理、冻融和电处理方法改善污泥脱水性能的作用机理。总结了不同物理调理方法的影响因素及其耦合增效作用对污泥脱水的影响,并对未来的研究工作进行展望。该领域未来的研究重点为采用物理法和化学法协同调理处理城镇污泥,结合使用混凝、生物分解、高温加热、冷冻和化学氧化,用硅藻土、人造纤维和石膏等为骨架颗粒与化学絮凝剂或药剂联合调理污泥。Treatment of municipal and industrial wastewater by activated sludge process generates a large amount of excess sludge,which contains pathogens,heavy metals,and organic pollutants,and may pose serious environmental risks without appropriate disposals.As the essential step of sludge treatment,dewatering plays a significant role in reducing sludge volume,facilitating transportation,improving calorific value and reducing the production of landfill leachate.Physical conditioning technology improves sludge dewatering performance by adding non-chemical conditioning agents or inputting energy.It is economical and widely used.Exploring efficient physical conditioning agents and methods is essential to improve dewatering efficiency.The types of physical conditioning techniques were analyzed in detail,and the mechanism of typical physical conditioning techniques,such as porous material conditioning,ultrasonic,heat treatment,freeze-thaw and electrical treatment methods to improve sludge dewatering performance,was summarized.The influencing factors of different physical conditioning methods and their coupling synergistic effects on sludge dewatering were summarized,and future research work was prospected.Future research in this field will focus on the use of synergistic conditioning methods of physical and chemical to treat municipal sludge,combining the use of coagulation,biodegradation,high-temperature heating,freezing and chemical oxidation,and the use of diatomite,artificial fiber and gypsum as skeletal particles with chemical flocculants or agents to condition sludge.

关 键 词：市政污泥 物理调理 污泥脱水 

分 类 号：TU992.3[建筑科学—市政工程]