| PAM-粉煤灰体系在煤泥水絮凝沉降过程中的作用及机理 |
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| 引用本文： | 丛龙斐,王霄鹏,周长春.PAM-粉煤灰体系在煤泥水絮凝沉降过程中的作用及机理[J].煤炭技术,2020,39(1):152-154. |
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| 作者姓名： | 丛龙斐 王霄鹏 周长春 |
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| 作者单位： | 威海尚品机械设备科技有限公司,山东威海264200;中国矿业大学化工学院,江苏徐州221116 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助(2017XKQY036) |
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| 摘 要： | 以煤泥水COD、SS、动电位、污泥比阻为切入点,分析了煤泥水的特点及难以絮凝沉降的原因,并研究了PAM-粉煤灰体系在混凝沉降作用中的机理。研究结果表明:PAM-粉煤灰法在最优条件下,清水分离率47%、沉降速度0.357 mm/s;上清液:pH=7.35,SS=55.57 mg/L,COD=37.72 mg/L;污泥比阻为0.062×10^15 m/kg,满足煤泥水循环标准。
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| 关 键 词： | 煤泥水 COD SS 动电位 污泥比阻 |
Role and Mechanism of PAM-Fly Ash System in Flocculation and Sedimentation of Slime |
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| CONG Long-fei,WANG Xiao-peng,ZHOU Chang-chun.Role and Mechanism of PAM-Fly Ash System in Flocculation and Sedimentation of Slime[J].Coal Technology,2020,39(1):152-154. |
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| Authors: | CONG Long-fei WANG Xiao-peng ZHOU Chang-chun |
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| Affiliation: | (Weihai Shangpin Mechanical Equipment Technology Co.,Ltd.,Weihai 264200,China;School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | Based on the breakthrough points, including COD, SS, zeta potential, sludge specific resistance, analyzed the characteristics of slime water, the reasons for the difficult to flocculation sedimentation. PAM-fly ash system was studied in the mechanism of coagulation sedimentation. The results show that PAM-fly ash method in optimal conditions, the water separation rate is 47%, the settling velocity is 0.357 mm/s;Supernatant: p H = 7.35, SS = 55.57 mg/L, COD = 37.72 mg/L;sludge specific resistance is 0.062×10^15 m/kg, satisfy the standard of coal slime water cycle. |
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| Keywords: | slime COD SS zeta potential sludge specific resistance |
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