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	污水污泥中腐殖酸的提取和利用
	李欢 ; 金宜英 ; 聂永丰 ; LI Huan ; JIN Yiying ; NIE Yongfeng
	2010-06-10 ; 2010-06-10
关键词	污水污泥 碱处理 腐殖酸 sewage sludge alkaline treatment humic acid X703
其他题名	Extraction and utilization of humic acid from sewage sludge
中文摘要	开发了一种从污泥中提取腐殖酸的方法,用于生产液态腐殖酸肥料。用0.2mol/L的NaOH溶液溶解脱水污泥;缓慢搅拌24h后,离心分离;用截留相对分子质量1000的无机超滤膜,提取上清液中的腐殖酸;残余污泥中和后,调理脱水。测量污泥中溶出的有机质、溶出液中的腐殖酸含量。结果表明:溶出液浓缩20倍后,满足液态肥对腐殖酸和重金属的质量分数要求;透过液残留占进料NaOH的80%。该方法可使污泥质量分数减少55%,含水率从80%降至70%;获得的腐殖酸浓缩液可用于生产多种复合肥。; A method was developed to produce liquid humic fertilizer from dewatered,activated sludge.The sludge was dissolved with 0.2 mol/L NaOH,stirred slowly for 24 h,and then centrifuged.The supernatant was separated through an inorganic ultrafiltration membrane with a relative molecular mass cutoff of 1 000.The residual sludge was dewatered after neutralization.46% of the organic substances in the sludge were dissolved,with humic acid accounting for 28% of the mass.After being concentrated 20 fold,the solution meets the standard humic acid and heavy metal requirements for liquid fertilizers.The permeated solution contains about 80% of the NaOH feeding.The method reduces the sludge by a mass ratio of 55%,and reduces the sludge water mass content from 80% to 70%.The resulting concentrated humic solution can be used for producing complex fertilizers.; “十一五”国家科技支撑计划项目(2006BAC02A18); 国家博士后科学基金项目(20080430368)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/65048]
专题	清华大学
推荐引用方式 GB/T 7714	李欢,金宜英,聂永丰,等. 污水污泥中腐殖酸的提取和利用[J],2010, 2010.
APA	李欢,金宜英,聂永丰,LI Huan,JIN Yiying,&NIE Yongfeng.(2010).污水污泥中腐殖酸的提取和利用..
MLA	李欢,et al."污水污泥中腐殖酸的提取和利用".(2010).

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