[工程科技]污水处理厂脱水污泥强化干化技术机理研究-中国博士后基金结题报告.docVIP

中 国 博 士 后 科 学 基 金 资 助 项 目 总 结 报 告 姓 名 李 春 萍 编 号 67425 所 在 设 站 单 位 清 华 大 学 项 目 名 称 污水处理厂脱水污泥碱式强化干化 技术机理研究 资 助 金 额 三万元 中 国 博 士 后 科 学 基 金 会 制 （二零一零年六月） 中文摘要 本文通过研发快速高效泥灰混合设备对污泥处理，脱水污泥性能的改善作用促进作用在污泥中添加5%、7%、10%、12%、15%的工业石灰和15%的分析纯石灰后，污泥的温度pH12并维持值3天以上。同时杀菌效果极显著，原污泥中粪大肠菌值为1.10×10-8 g/MPN，而所有处理后污泥中，粪大肠菌基本全被杀灭，其值大于0.333g/MPN，达到了未检出的指标，污泥实现了稳定化和无害化。在臭度方面，污泥中臭味强度显著降低，从5级降为2级以下，即：从无法忍受的强烈臭味降低至勉强可以感觉到轻微臭味。最后对不同处理的污泥稳定化进行模糊评价，模糊评价的结果表明：在污泥中添加5%、7%、10%、12%、15%的工业石灰和15%的分析纯石灰后，ABSTRACT This artical focuses on the fast speed, high efficiency sludge and lime mixing equipment, research on the sludge’s stability and semi-drying effect by adding lime. Also investigate the equipment’s mixing effects, and the promotion on the dewatered sludge’s property and semi-drying effect. The main research results are as follows: Design a plow-shaped sludge mixer independently, which can fully mix the sludge and lime and can freely adjust some parameters. Break the current situation that our country has no relevant equipments in this field, and provide some important references for the industrial application. Four indicators such as temperature, pH, manure coliform value and fetidity were selected as the factors to evaluate the stabilization of sludge in this experiment. After that the sludge samples were mixed with 15% of lime(AR) and 5%, 7%, 10%, 12% and 15% of industrial lime separately, the temperature and pH of these samples met the stabilization requirements of sludge in EU Direction(CR13714-2001) and the stabilization standard issued by the United States Environmental Agency(USEPA 1993). At the same time, the bactericidal effect was very significant and manure coliform value trended to decline significantly in sludge. It achieved the stable and innocuous management of sludge.The degree of fetidity