摘要
为将污水水质从一级B标提高到一级A标,文章通过搭建河砂滤池和生物炭滤池,分别考察了2组反应器在不同C/N比、厌氧/好氧高度比及表面水力负荷条件下对污染物去除效果的影响,并在较优参数条件下比较了2组反应器的提标效果。结果表明:适当提高进水C/N比、厌氧/好氧高度比以及降低表面水力负荷,均有利于提高2组反应器对污染物的去除效果。在较优工艺参数条件下,即C/N为6.30∶1,厌氧/好氧高度比为5∶5,表面水力负荷为0.13 cm^3/(cm^2·min),虽然2组反应器均能较好地将污水水质从一级B标提升至一级A标。对污染物的去除率而言,2#反应器均高于1#反应器,表明在河砂滤池内添加生物炭后,由于生物炭具有较大的比表面积和较强的离子交换能力,有助于提高反应器对污染物的去除效率。对2组反应器内的填料进行微生物镜检分析可知,反应器内形成了良好的微生态系统,后生动物主要以肉足虫、轮虫和线虫为主。
In order to improve the water quality from the Grade I B standard to the Grade I A standard, river sand filter and biochar filter were built, and the effects of two reactors on the removal efficiency of pollutants were investigated under different C/N ratio, anaerobic/aerobic height ratio and surface hydraulic load, and the two reactors on upgrading effects were also compared under the superior parameter conditions. The results showed that it was beneficial to improve the ratio of influent C/N, anaerobic/aerobic height and decrease surface hydraulic load to improve the removal rate of pollutants in the two reactors. Under the conditions of better process parameters, that was, the C/N ratio, the anaerobic/aerobic height ratio and the surface hydraulic load were 6.30: 1, 5: 5 and 0.13 cm3/(cm2 · min), respectively, the two reactors could better improve the sewage water quality from the Grade I B standard to the Grade I A standard. However, for the removal rate of pollutants, the 2# reactor was higher than the 1# reactor, indicating that after adding biological carbon in the river sand filter, the biochar has a larger specific surface area and stronger ion exchange capacity, which helped to improve the efficiency of the reactor to remove the pollutants. Microbiological analysis of fillers in two reactors showed that a good microecosystem was formed in the reactor. Sarcodina, Rotifer and Nematode were the main metazoan species.
作者
陈浪
勾曦
覃银红
陈思宇
李晓云
刘壮
谢燕华
韩智勇
CHEN Lang;GOU Xi;QIN Yinhong;CHEN Siyu;LI Xiaoyun;LIU Zhuang;XIE Yanhua;HAN Zhiyong(Institute of Environment, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第3期114-121,共8页
Environmental Science & Technology
基金
国家自然科学基金面上资助项目(41472230)
四川省科学技术厅软科学研究项目(2017ZR0044)
中国博士后科学基金项目(2016M592646)
关键词
生物炭
生物滤池
污水处理厂
提标
biochar
biofilter
municipal wastewater treatment plant
upgrading
