污水处理厂污泥管道输送系统设计与研究
摘要:污水处理厂脱水污泥含水率通常在82%~65%之间，自然状态下无流动性。污泥输送系统分无压输送和有压输送。传统输送常采用无压输送，有压输送是泵加管道输送系统。随着脱水污泥后续处理处置需求的增多，污泥管道输送技术应用得越来越广泛。通过对工程实例、相关规范及文献的研究，建议污泥输送管道设计流速采用0.16m/s~0.06m/s；管道材料可选用高压无缝钢管或超低摩阻耐磨复合管；当系统的污泥流量、输送压力和距离不超过临界值时优先选用偏心螺杆泵，超过临界值则采用液压柱塞泵。
关键词:脱水污泥管道输送系统设计
Abstract: the sewage treatment plant sludge dewatering moisture content is usually between 82% ~ 65%, natural state the no liquidity. Sludge conveying system without pressure and conveying points pressure transmission. The traditional transportation is often used to transport without pressure, pressure pump and pipeline transport is conveying system. With the subsequent disposal sludge dewatering increased demand, sludge pipe technology application to be more and more widely. Through to the engineering example, the relevant specification and literature study, suggest sludge pipeline design velocity use 0.16 m/s ~ 0.06 m/s; Pipe materials can choose high pressure seamless steel tube or low friction wear-resisting complex pipe; When the system’s sludge flow, conveying pressure and distance not more than the critical priority when the choose eccentric screw pump, more than the critical hydraulic plunger pump is adopted.
Keywords: sludge dewatering pipe system design
截至2011年底，全国已建成投入运行的城镇污水处理厂共3135座，污水处理能力达到1.36亿m3/d，按处理率70%计，约合产生干泥量12500~15200T/d，折合为含水率78%的湿污泥有56818~69090m3/d。“十二五”环境保护规划中明确指出处理能力10万m3/d以上污水处理厂需实现污泥安全处理；《生活垃圾填埋污染物控制标准》要求：生活污水处理厂污泥经处理后含水率小于60%，可以进入生活垃圾填埋场填埋处置。可见，现行规划和标准给污水处理厂脱水污泥处理提出了更高的要求，目前，大多数污泥有待深度脱水或后续干化处理，采用管道输送系统将污泥安全、快捷、高效地输送至处理（或处置）地点，是必不可少的环节。
1 污泥的流动性
污水处理厂污泥管道输送系统设计与研究
摘要:污水处理厂脱水污泥含水率通常在82%~65%之间，自然状态下无流动性。污泥输送系统分无压输送和有压输送。传统输送常采用无压输送，有压输送是泵加管道输送系统。随着脱水污泥后续处理处置需求的增多，污泥管道输送技术应用得越来越广泛。通过对工程实例、相关规范及文献的研究，建议污泥输送管道设计流速采用0.16m/s~0.06m/s；管道材料可选用高压无缝钢管或超低摩阻耐磨复合管；当系统的污泥流量、输送压力和距离不超过临界值时优先选用偏心螺杆泵，超过临界值则采用液压柱塞泵。
关键词:脱水污泥管道输送系统设计
Abstract: the sewage treatment plant sludge dewatering moisture content is usually between 82% ~ 65%, natural state the no liquidity. Sludge conveying system without pressure and conveying points pressure transmission. The traditional transportation is often used to transport without pressure, pressure pump and pipeline transport is conveying system. With the subsequent disposal sludge dewatering increased demand, sludge pipe technology application to be more and more widely. Through to the engineering example, the relevant specification and literature study, suggest sludge pipeline design velocity use 0.16 m/s ~ 0.06 m/s; Pipe materials can choose high pressure seamless steel tube or low friction wear-resisting complex pipe; When the system’s sludge flow, conveying pressure and distance not more than the critical priority when the choose eccentric screw pump, more than the critical hydraulic plunger pump is adopted.
Keywords: sludge dewatering pipe system design
截至2011年底，全国已建成投入运行的城镇污水处理厂共3135座，污水处理能力达到1.36亿m3/d，按处理率70%计，约合产生干泥量12500~15200T/d，折合为含水率78%的湿污泥有56818~69090m3/d。“十二五”环境保护规划中明确指出处理能力10万m3/d以上污水处理厂需实现污泥安全处理；《生活垃圾填埋污染物控制标准》要求：生活污水处理厂污泥经处理后含水率小于60%，可以进入生活垃圾填埋场填埋处置。可见，现行规划和标准给污水处理厂脱水污泥处理提出了更高的要求，目前，大多数污泥有待深度脱水或后续干化处理，采用管道输送系统将污泥安全、快捷、高效地输送至处理（或处置）地点，是必不可少的环节。
1 污泥的流动性