CHENGWen,JIANGLan-lan,GENGZhen,et al.Engineering Design of Sludge Resource Utilization in Taiyuan Municipal Wastewater Treatment Plant[J].China Water & Wastewater,2022,38(24):72-75.
太原市城市污水厂污泥资源化利用工程设计
- Title:
- Engineering Design of Sludge Resource Utilization in Taiyuan Municipal Wastewater Treatment Plant
- 摘要:
- 太原市城市污水厂污泥集中处理工程项目，主要处理主城区污水厂含水率为80%的脱水污泥，设计规模近期500 t/d，远期700 t/d。分析了不同批次污泥的泥质，针对污泥碱性条件下易水解破壁、氮磷等营养元素含量较高的基本特点，创新地采用“碱性热水解+板框脱水+MVR蒸发+肥料化产品”组合处理工艺，不仅实现了污泥的减量化、无害化，同时还生产了固体肥和液体肥两种满足不同市场需求的资源化产品，彻底解决了污泥的最终出路问题。
- Abstract:
- The sludge centralized treatment project of municipal wastewater treatment plants in Taiyuan mainly treats dewatered sludge with water content of 80% from wastewater treatment plants in the main urban area. The short-term design scale is 500 t/d, and the long-term design scale is 700 t/d. The characteristics of sludge from different batches were analyzed. According to the basic characteristics of the sludge, such as easy hydrolysis and wall breaking under alkaline condition, high content of nitrogen and phosphorus, a combined treatment process consisting of alkaline thermal hydrolysis, plate and frame dewatering, MVR and fertilizer production was innovatively proposed. The process realized reduction and hazard-free treatment of the sludge, produced two kinds of products (solid fertilizer and liquid fertilizer) which met different market demands, and completely solved the final disposal problem of the sludge.
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