纯氧曝气下活性无烟煤滤池耐高氨氮冲击负荷中试研究  

Pilot study of resistance to high ammonia nitrogen load on activated anthracite filter in the pure oxygen aeration

作　　者：刘清华 张晓娜 陈卓华 Liu Qinghua;Zhang Xiaona;Chen Zhuohua(Dongjiang Shuiwu Co. Ltd. , Dongguan 523000, China)

机构地区：[1]东莞市东江水务有限公司,广东东莞523000

出　　处：《供水技术》2018年第6期10-12,共3页Water Technology

摘　　要：通过中试研究了活性无烟煤滤池在纯氧曝气条件下,对高氨氮的耐冲击负荷能力和响应时间。结果表明:进水氨氮在1. 38～1. 75 mg/L时,滤池显示出良好的去除氨氮效能,滤后水氨氮稳定在检出限(0. 02 mg/L)以下,没有NO_2^--N残留,能及时响应且无时间滞后。进水氨氮为2. 46～3. 07 mg/L时,出水平均氨氮为0. 18 mg/L,无NO_2^--N积累且能实现同步响应去除氨氮。进水氨氮在2. 71～3. 07 mg/L时,滤池能同步去除氨氮至0. 30 mg/L左右。进水氨氮在3. 61 mg/L左右时,出水平均氨氮达0. 99 mg/L,出水不达标;无NO_2^--N积累,进、出水NO_2^--N均在0. 020～0. 030 mg/L之间。Under pure oxygen aeration condition, a pilot study on resistance of high ammonia nitrogen load and response time on activated anthracite filter was carried out. The results showed that the ammonia nitrogen in the effluent was stable below the detection limit (0.02 mg/L) with no NO2^--N residues, when the ammonia nitrogen average concentration of filter influent water of 1.52 mg/L. It showed a good removal efficiency and timely response and no time lag. Under the influent ammonia nitrogen average concentration of 2.62 mg/L, the average ammonia nitrogen in filtered water was 0.18 mg/L, with a synchronous response to removal ammonia nitrogen and without NO2^--N accumulation could also be realized. When the influent ammonia nitrogen was 2.71~3.07 mg/L, the filter could reduce it to about 0.30 mg/L with synchronous response. If the influent average concentration of 3.61 mg/L, the ammonia nitrogen in the filter effluent was 0.99 mg/L, which could not meet the national standard, the NO2^--N of inlet and outlet were maintained between 0.020~0.030 mg/L with no accumulation.

关 键 词：活性无烟煤滤池 耐冲击负荷 响应时间 纯氧曝气 

分 类 号：TU991.24[建筑科学—市政工程]