NaOH投加量对剩余污泥水解的影响  

Effect of Na OH Dosage on Sludge Hydrolysis

作　　者：杜广春[1,2] 邱春生[1,2] 孙力平[1,2] 钟远[1,2] 骆尚廉[1,3] 

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津城建大学天津市水质科学与技术重点实验室,天津300384 [3]台湾大学环境工程学研究所,台北10639

出　　处：《天津城建大学学报》2015年第5期343-346,共4页Journal of Tianjin Chengjian University

基　　金：国家科技重大专项水专项(2012ZX07308-002);天津市高等学校科技发展基金计划项目(20130515)

摘　　要：研究了NaOH投加量对剩余污泥水解的影响,考察了在不同NaOH投加量条件下,pH值、溶解性化学需氧量（SCOD）、可溶性蛋白质、可溶性总糖及挥发性悬浮固体（VSS）的变化情况,来反映有机物的溶出情况,同时表征碱预处理对污泥水解效果的优劣.研究结果显示,在碱投加量为0~16,g/100,gSS的条件下,提取液中pH值可达7.17~12.57,SCOD质量浓度达236~4907,mg/L,蛋白质质量浓度为5~664,mg/L,总糖质量浓度为29~378,mg/L,且各参数整体随碱浓度增大而增大,NaOH预处理对促进剩余活性污泥水解的效果显著.The effect of sodium hydroxide（Na OH）dosage on sludge hydrolysis was studied in this paper. The dissolution of organic matter and the effect of alkaline pretreatment on sludge hydrolysis were represented by the investigation of the variation conditions of the p H value,soluble chemical oxygen demand（SCOD）,soluble protein,total soluble sugar and the volatile suspended solid（VSS）under the condition of various Na OH dosages. Results showed that when Na OH dosage was 0~16g/100 g SS,the p H value was 7.17~12.57,the concentrations of SCOD,soluble protein,total soluble sugar of the treated sludge could reach 236~4 907 mg/L,5~664 mg/L and 29—664 mg/L respectively. With the increase of the alkali dosage,the concentrations of these indicators increased rapidly,which proved that Na OH pretreatment had dramatic effect on the improvement of excess activated sludge hydrolysis.

关 键 词：剩余污泥 碱预处理 NAOH 水解 

分 类 号：X703.1[环境科学与工程—环境工程]