PAC-PPFC复合混凝预处理酮连氮法制肼废水  

Enhanced PAC-PPFC Composite Coagulation Pretreatment for Hydrazinemaking Wastewater from Ketone-Nitrogen Method

作　　者：王嘉豪 马云超 马敬环[1,3] 刘莹 张欢[1] 苏彦铭[1] WANG Jiahao;MA Yunchao;MA Jinghuan;LIU Ying;ZHANG Huan;SU Yanming(School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;China Petroleum Jilin Petrochemical Company Engineering Cost Department, Jilin 132022, China;Tianjin HaiZe Hui Technology Co., Ltd, Tianjin 300450, China)

机构地区：[1]天津工业大学环境与化学工程学院,天津300387 [2]中国石油吉林石化公司工程造价部,吉林132022 [3]天津海泽惠科技发展有限公司,天津300450

出　　处：《水处理技术》2019年第9期29-34,共6页Technology of Water Treatment

基　　金：天津市科技计划项目（17YFCZZC00360）;江苏省自然科学基金（BK2011201）

摘　　要：为加强混凝预处理酮连氮法制肼废水的处理效果,研发了以聚合氯化铝(PAC)-聚磷氯化铁(PPFC)复合混凝剂,以阴离子型聚丙烯酰胺(APAM)为助凝剂的强化混凝工艺。通过单因素实验和响应曲面设计,探讨了强化混凝工艺预处理酮连氮法制肼废水参数。结果表明,COD和NH^+4-N去除率影响先后顺序为废水pH>PAC-PPFC投加量>APAM投加量和PAC-PPFC投加量>废水pH>APAM投加量,各影响因子之间存在一定的交互作用。当PACPPFC投加量2 g/L、APAM投加量6.3 mg/L、原水pH为9.0时,COD和氨氮的去除率分别达到32.64%和50.42%,与模型预测结果基本一致,表明了强化PAC-PPFC复合混凝工艺预处理制肼废水是可行的。In order to strengthen the treatment effect of coagulation pretreatment for hydrazine-making wastewater from ketone-nitrogen method, the enhanced coagulation process with polyaluminium chloride-polyphosphate ferric chloride(PAC-PPFC) composite as coagulant and anionic polyacrylamide(APAM) as coagulant aids was researched. The single-factor experiment and response surface design were used to optimize the enhanced coagulation process for the treatment of hydrazine-making wastewater from ketone-nitrogen method. The results showed that, the influence on COD and NH^+4-N removal rate from big to small was wastewater pH, PAC-PPFC dosage, APAM dosage and PAC-PPFC dosage, wastewater pH, APAM dosage respectively, and there were some interactions among the influencing factors. When the PAC-PPFC dosage was 2 g/L, APAM dosage was 6.3 mg/L, and the pH of raw water was 9.0, the removal rates of COD and ammonia nitrogen by enhanced coagulation were 32.64% and 50.42%, respectively. The model prediction results were basically consistent, indicating the feasibility of the enhanced PAC-PPFC coagulation process for the hydrazine-making wastewater treatment.

关 键 词：制肼废水 聚合氯化铝(PAC)-聚磷氯化铁(PPFC)复合混凝剂 模型 响应曲面 

分 类 号：X783[环境科学与工程—环境工程]