疏浚底泥填料制作及污水处理效果研究

发布时间：2018-06-01 04:00

  本文选题：疏浚底泥 + 多介质土壤滤层系统　； 参考：《浙江大学》2015年硕士论文

【摘要】：疏浚底泥中含有大量的微生物、病原体、重金属以及有机污染物等,如处理不当将会造成严重的二次污染。若将疏浚底泥制成污水处理填料,则可实现“以废治废”的目的。不仅开辟了一条疏浚底泥处理、处置和资源化的新途径,而且可以节约大量的作为水处理填料原料的粘土资源,具有显著的环境效益、社会效益和经济效益。本文通过对疏浚底泥样品的主要化学成分分析表明,底泥样品中的主要化学成分同粘土类原料比较接近,这为底泥的资源化提供了有利的依据。在此基础上,分别采用烧结和胶结两种工艺将疏浚底泥制成球状和碗状污水处理填料,且针对烧结工艺设置了不同的原料组成和焙烧温度。通过对比不同工艺条件下研制的填料性能最终确定烧结工艺原料组成为100%疏浚底泥,焙烧温度为1100℃。所研制的烧结球状底泥填料性能参数符合相关标准,同时通过胶结工艺制得期望规格的碗状填料。将两种不同工艺所制得的填料和有机发酵物应用于多介质土壤滤层系统及生物滤池系统中用于处理餐饮废水,研究疏浚底泥填料及有机发酵物应用于餐饮废水处理的效果。结果表明,将烧结球状底泥填料分别用作MSL和生物滤池系统填料时,对餐饮废水均有一定净化效果,不过其净化效果均普遍差于常规填料(沸石和陶粒)；胶结碗状底泥填料用作废水处理填料时也具有一定净化效果,特别对废水中TN、TP具有较好的处理效果。因此,将疏浚底泥资源化为水处理填料具有一定可行性。有机发酵物用于MSL系统时,对N具有较好的去除效果,但是对COD和TP的去除效果较差。底泥填料应用于MSL系统对废水的净化效果好于生物滤池。因此,将疏浚底泥资源化为水处理填料具有可行性。
[Abstract]:Dredged sediment contains a large number of microorganisms, pathogens, heavy metals and organic pollutants, if not handled properly will cause serious secondary pollution. If dredged sediment is made into sewage treatment filler, the purpose of "treating waste with waste" can be realized. It not only opens up a new way of dredging sediment treatment, disposal and utilization, but also saves a large number of clay resources which can be used as raw material for water treatment and packing. It has remarkable environmental, social and economic benefits. Through the analysis of the main chemical composition of dredged sediment samples, it is shown that the main chemical composition of sediment samples is close to that of clay materials, which provides a favorable basis for the utilization of sediment. On this basis, the dredged sediment was made into spherical and bowl type sewage treatment fillers by sintering and cementing respectively, and different raw material composition and calcination temperature were set according to the sintering process. By comparing the properties of the fillers prepared under different technological conditions, it was finally determined that the raw material composition of sintering process was 100% dredged sediment, and the calcination temperature was 1100 鈩，

本文编号：1962775