辣木油渣对水中偶氮染料直接耐晒黑G的混凝去除效果研究  

Study on Effect of Moringa oleifera Seed Pesscake as Natural Coagulant on Removal of Direct Black 19 in Aqueous Solution

作　　者：袁步先 张浏[1] 郑西强[1] 帖靖玺[2] 李寒超 张帅[2] 

机构地区：[1]安徽省环境科学研究院安徽省污水处理技术重点实验室,安徽合肥230061 [2]华北水利水电大学环境与市政工程学院

出　　处：《现代农业科技》2015年第13期269-271,274,共4页Modern Agricultural Science and Technology

基　　金：水体污染控制与治理科技重大专项(2009ZX07210-003)

摘　　要：通过杯罐混凝试验,研究了辣木油渣对溶液中直接耐晒黑G的去除效果及其影响因素。结果表明:辣木油渣中含有大量的具有混凝能力的蛋白质,低温和强碱性对直接耐晒黑G的去除不利;直接耐晒黑G的去除率随辣木油渣粉末用量的增大而提高;对于每一个固定的浓度,都存在一个最佳辣木油渣粉末投加量,最佳辣木油渣粉末投加量和直接耐晒黑G的浓度之间的关系可以用方程式y=3.75x+22.5(R2=0.986 8,x为染料浓度,y为辣木油渣粉末投加量)描述。无机盐能提高直接耐晒黑G的去除效果,而悬浮物则降低直接耐晒黑G的去除效果。辣木油渣去除直接耐晒黑G的机理为吸附-电性中和辣木油渣粉末成核效应的联合作用。辣木油渣是一种良好的处理直接耐晒黑G的天然混凝剂。Jar tests were carried to explore the feasibility of use of Moringa oleifera seed presscake （MOSP）as a natural coagulant for removal of direct black 19 （DB-19 ）from the effluent. The results indicated that the MOSP contained various proteins which were the active agents for its coagulating ability. Low temperature and strongly basic condition were unfavorable for DB-19 removal. The DB-19 removal efficieneies increased with the increasing MOSP dosage. There existed an optimal MOSP dosage for each DB-19 concentration. The relationship between the two parameters could be described by the equation y=3.75x＋22.5 （R^2=0.986 8,x is DB-19 concentration,y is optimal MOSP dosage）. The DB-19 removal effieiencies were improved by inorganic salts and weakened by suspended solids. The mechanism for DB-19 removal by MOSP was a eombinaition of adsorption and neutralisation of charges and the nucleation of MOSP powders. MOSP is a potential natural coagulant for DB-19 removal.

关 键 词：辣木油渣 直接耐晒黑G 混凝 去除效果 

分 类 号：X791[环境科学与工程—环境工程]