QQ客服 官方微博 反馈留言

	Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion
	Jin Yiying ; Li Huan ; Mahar, Rasool Bux ; Wang Zhiyu ; Nie Yongfeng
	2010-10-12 ; 2010-10-12
关键词	waste activated sludge (WAS) ultrasonic treatment alkaline treatment aerobic digestion WASTE-ACTIVATED-SLUDGE ENHANCED ANAEROBIC-DIGESTION DISINTEGRATION TECHNIQUES EXTRACELLULAR POLYMERS FLOC STRUCTURE SEWAGE-SLUDGE SOLUBILIZATION REMOVAL IMPROVE Environmental Sciences
中文摘要	Alkaline and ultrasonic sludge disintegration can be used as the pretreatment of waste activated sludge (WAS) to promote the subsequent anaerobic or aerobic digestion. In this study, different combinations of these two methods were investigated. The evaluation was based on the quantity of soluble chemical oxygen demand (SCOD) in the pretreated sludge as well as the degradation of organic matter in the subsequent aerobic digestion. For WAS samples with combined pretreatment, the released COD levels were higher than those with ultrasonic or alkaline pretreatment alone. When combined with the ultrasonic treatment, NaOH treatment was more efficient than Ca(OH)(2) for WAS solubibzation, The COD levels released in various sequential options of combined NaOH and ultrasonic treatments were in the the following descending order: simultaneous treatment > NaOH treatment followed by ultrasonic treatment > ultrasonic treatment followed by NaOH treatment. For simultaneous treatment, low NaOH dosage (100 g/kg dry solid), short duration (30 min) of NaOH treatment, and low ultrasonic specific energy (7500 kJ/kg dry solid) were suitable for sludge disintegration, Using combined NaOH and ultrasonic pretreatment with optimal parameters, the degradation efficiency of organic matter was increased from 38.0% to 50.7%, which is much higher than that with ultrasonic (42.5%) or with NaOH pretreatment (43.5%) in the subsequent aerobic digestion at the same retention time,
语种	英语 ; 英语
出版者	SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79761]
专题	清华大学
推荐引用方式 GB/T 7714	Jin Yiying,Li Huan,Mahar, Rasool Bux,et al. Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion[J],2010, 2010.
APA	Jin Yiying,Li Huan,Mahar, Rasool Bux,Wang Zhiyu,&Nie Yongfeng.(2010).Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion..
MLA	Jin Yiying,et al."Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。