%0 Journal Article
%T Nitrogen removal from the sewage containing seawater via nitrite pathway<br>含海水污水的短程硝化反硝化
%A Yu Deshuang
%A Peng Yongzhen
%A Song Xueqi
%A Li Mei
%A <br>Yu D
%A Peng Y
%A Song X
%A Li M
%J 环境科学
%D 2003
%I 
%X With control of the concentration of free ammonia (FA), shortened nitrification-denitrification was accomplished in SBR to achieve enhanced nitrogen removal from the sewage containing seawater. Several parameters which included salinity, temperature, pH and NH4(+)-N load were studied to evaluate their effects. The results of experiences indicated that shortened nitrification-denitrification can be accomplished in sewage containing seawater with relatively high salinity. With various salinity, the nitrogen removal efficiency had relationship with the NH4(+)-N load, there should be a lower NH4(+)-N load when the salinity was high. The nitrogen removal efficiency reached above 90% when the NH4(+)-N load was not exceed 0.15 kg/(kg.d). Elevation of the temperature availed to higher nitrogen removal efficiency, this efficiency doubled when the reaction temperature was changed from 20 degrees C to 30 degrees C. Relatively high value of pH, in the range of 7.5 and 8.5 had advantage to achieve effective shortened nitrification-denitrification which caused by the selective inhibition of free ammonia(FA).
%K wastewater containing seawater
%K free ammonia (FA)
%K nitrification denitrification via nitrita pathway
%K NH4+-N load
%K nitrogen removal<br>含海水污水
%K 游离氨浓度
%K 短程硝化反硝化
%K NH4+-N负荷
%K NH4+-N去除率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=86A912027EC3463D&yid=D43C4A19B2EE3C0A&vid=B91E8C6D6FE990DB&iid=38B194292C032A66&sid=771152D1ADC1C0EB&eid=E514EE58E0E50ECF&journal_id=0250-3301&journal_name=环境科学&referenced_num=21&reference_num=7