摘要
以浓度比为1∶2的聚乙烯醇(PVA)与淀粉为碳源,配制模拟废水,采用水解酸化—好氧工艺研究聚乙烯醇(PVA)等物质的降解状况.结果表明,停留时间(HRT)为24h时COD、PVA、淀粉的处理效率分别为89%～95%,89%～99%,85%～100%,均优于HRT为12h(COD、PVA、淀粉的处理效率为70%～80%,52%～76%,81%～100%)的处理效果,对PVA的降解尤其明显;污泥指数为50～200mL/g,污泥浓度(SS)对出水水质无明显影响;水解酸化池中DO维持在0.2mg/(L.h)左右,曝气池中DO维持在3mg/(L.h)左右.
Polyvinyl alcohol （PVA） and starch（the concentration ratio was 1 ： 2）were used to prepare the simula- ted wasterwater and hydrolysis acidification-aerobic process was used for the actual use. The results showed that the degradation of chemical oxygen demand （COD）, polyvinyl alcohol （PVA）, and starch was 89 % ～95%, 89 % ～99 %, and 85 %～100 % respectivelly when the hydraulic retention time （HRT） was 24h, and the effect was better than HRT=12h （the degradation of COD, PVA, and starch was 70% ～80%, 52%～76%, and 81%～ 100%）, especially the degradation of PVA. SVI was 50～200mL/g and there was no apparent affect of the Suspended Solid （SS） to the quality of water. The dissolved oxygen was about 0. 2mg/（L · h） in the hy- drolysis addification pool and about 3mg/（L · h） in the aeration tank.
出处
《西安工程大学学报》
CAS
2013年第3期354-358,共5页
Journal of Xi’an Polytechnic University
基金
陕西省科技厅科学技术研究发展计划项目(2010K02-10)
关键词
模拟退浆废水
水解酸化-好氧工艺
停留时间
simulated desizing water,hydrolysis acidification-aerobic process
hydraulic retention time
