摘要
针对嘉兴地区污染水源水,进行了上向流反粒度生物滤池应用研究,以期实现在低能耗条件下去除氨氮和浊度,同时达到保护后续臭氧/活性炭工艺的目的。研究结果表明,在进水氨氮为1.57~4.02 mg/L、浊度为1.01~2.86 NTU,反粒度生物滤池气水比为1∶4(水温低于10℃时降为1∶5),滤速为11 m/h的条件下,反应器稳定运行期间出水氨氮为0.02~0.60 mg/L,平均去除率达到91%;出水浊度<0.55 NTU,平均去除率达到84%,保护了后续臭氧/活性炭工艺。反粒度生物滤池单位运行能耗只有同期运行的生物接触氧化池的14%~18%。此外,反粒度生物滤池对亚硝酸盐氮、COD_(Mn)、UV_(254)和TOC都有一定的去除效果。
An up-flow reverse grain biological filter was used to remove ammonia nitrogen and turbidity from the contaminated source water in Jiaxing with low energy consumption, and to protect the subsequent ozone/biological activated carbon process in the meantime. The operation conditions of the filter included ammonia nitrogen concentrations from 1.57 to 4.02 mg/L, turbidities between 1.01 NTU and 2.86 NTU, a gas-water ratio of 1 ： 4 （ adjusted to 1 ： 5 when the water temperature was below 10 ℃） and a filtration rate of 11 m/h. The results indicated that the effluent ammonia nitrogen was from 0.02 to 0.60 mg/E and the turbidity was less than 0.55 NTU, with an average removal efficiency of 91% and 84%, respectively. The low effluent turbidity implied that the subsequent ozone/biological activated carbon process was protected. In addition, the filter achieved a good performance in nitrite nitrogen, CODMn, UV254 and TOC removal. According to the energy consumption calculation, the unit operation energy consumption of the reverse gainbiological filter was as low as 14% to 18% of that of the biological contact oxidation tank operated in the same period.
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第3期52-56,共5页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2017ZX07201004)
关键词
污染水源水
上向流反粒度生物滤池
氨氮
浊度
contaminated source water
up-flow reverse grain biological filter
ammonia nitrogen
turbidity
