Open AccessExperimental study on the intensive treatment of coal mine domestic sewage by biofilm A/O
Author(s) -
Ping Zheng,
Ji Yang,
Jie Gao,
Fei Pei
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/571/1/012061
Subject(s) - effluent , sewage , reuse , environmental science , pollutant , anoxic waters , economic shortage , coal , environmental engineering , waste management , chemistry , environmental chemistry , engineering , organic chemistry , linguistics , philosophy , government (linguistics)
In recent years, China attached much significance to the reuse and high standard discharge of domestic sewage. Coal mines in China are mainly distributed in north and northwest t areas with shortage of water. To improve the treatment effects and reuse standard of coal mine domestic sewage, the biofilm A/O reactor with one anoxic zone and two aerobic zones was used to carry out an experiment. The pollutants removal effects and influencing factors were analyzed. The results indicate: Under the conditions of HRT=5.92 h, ρ(DO) A =0.5±0.2 mg/L, ρ(DO) O1 =2±0.2 mg/L, ρ(DO) O2 =2.5±0.2 mg/L, and R (reflux ration)=100%, the maximal concentration of NH 4 + -N, COD, TN and TP in the last effluent were respectively 0.52mg/L, 15.3 mg/L, 13.1 mg/L and 0.78mg/L. Under the conditions of HRT=4.74 h and R=50%, the reactor achieved optimal performance. Moreover, the effluent concentration of NH 4 + -N, COD, TN, TP met The reuse of urban recycling water - Water quality standard for industrial uses (GB/T 19923-2005) .