%0 Journal Article
%T SELF-PURIFICATION OF POLYAROMATICHYDROCARBONS AND EFFECT OF MICROBESIN IRRIGATED SOILS<br>污灌土壤中多环芳烃自净的微生物效应
%A Liu Qisong
%A Yang Guifen
%A Zhang Chungui
%A Xu Huaxia
%A Jiang Qingnan
%A <br>刘期松
%A 杨桂芬
%A 张春桂
%A 许华夏
%A 姜晴楠
%J 环境科学学报
%D 1984
%I 
%X To polyaromatic hydrocarbons (PAHs) were given the highest concerns by public for irrigating paddy fields with refinery wastewater. This study reports self-purification of PAH and microbial biocoenose in surface soil and subsoil during the seasons. Results showed that PAH was higher in surface-layer at irrigation date (July) than before plough and after irragation stopped. BaP, BeP and 1, 2-benzoanthracene were the least in 9 PAHs while biphenyl, fluoranthene, pyrene, acenaphthene, phenanthrene, anthracene were rather high. They were adsorbed on surface soil and fly ash. PAH continuously accumulated in the sediments of channel head and fields nearby.Microbial ecology was mainly characteristic of bacteria but less of fungus and actinomyces. Microbial activity (active cell number) was higher in surface-layer than subsoil, and higher in July than April and September. Predominant microbial biocoenose was bacillus and pseudomonas. Amount of PAH in paddy soil was reduced due to chemical physical and biological factors, and not increased any more even following irrigation time.To prevent PAH from depositing in paddy fields, lagoon adsorption and filter facilities were constructed at channel head as an important way of improving oily wastewater quality.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=0C63B426E11DF5A6AEC378A0134C2813&yid=36250D1D6BDC99BD&vid=E158A972A605785F&iid=0B39A22176CE99FB&sid=D46BA3D3D4B3C585&eid=C29816B2656377A7&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=11&reference_num=0