摘要
对接种硫酸盐还原菌的厌氧附着生长反应器内硫酸盐和氨氮的同步去除进行了研究。试验进水采用人工配水,以硫酸钠作为电子受体,氯化铵作为电子供体,葡萄糖作为碳源,容积负荷分别为2380 mgS/m3.d、2080 mgN/m3.d、104170 mgCOD/m3.d。实验运行230天的结果表明:COD、硫酸盐和氨氮的平均去除率分别达到91.34%、43.35%、58.74%;出水和气体中分别有单质硫和氮气出现,其含量随反应进行不断增加。提高进水容积负荷,出水中有亚硝酸根出现累积,氨氮去除效果明显,最高去除率可达79.33%,但硫酸盐降解受到抑制;同时总有机碳去除率下降,平均可达28.61%,无机碳平均去除率为33.01%。通过对不同阶段实验结果的分析证明了同步脱氮除硫反应的存在并探讨了其发生机理。
Sulfate and ammonium- nitrogen wastewater was treated over 330day period at 35℃, in an anaerobic attached -growth bioreactor of 3.8 L employing sulfate reducing bacteria （SRB）. Sodium sulfate （2. 38 gS/m^3 ·d） and ammonium chlorine （2.08 gN/m^3 ·d） were used as electron acceptor and electron donor with a N/S ratio of 1 ： 1.14 in the effluent respectively. The glucose （ 104.17 gCOD/m^3 ·d ） was fed into the bioreactor as carbon source for bacteria growth. During 230 days, removal rates of ammonium - nitrogen, sulfate and COD could reach 58.74% , 43.35% , and 91.34%, respectively. Meanwhile, sulfur production was observed in effluent as well as molecular nitrogen in biogas, whose amounts increased with time substantially. During 300^th day to 330^th day, the nitrite cumulated in the effluent and a large quantity of ammonium was removed, whose removal rate can reach 79.33%, while sulfate removal was inhibited. The average removal rate of total organic carbon decreased to 28.61% , while the average removal rate of inorganic carbon was 30. 01%. A novel reaction of simultaneous removal of ammonium and sulfate was proved to be true and the mechanism was discussed as well in this paper.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2007年第4期421-426,共6页
Journal of Natural Science of Heilongjiang University
基金
黑龙江省杰出青年科学基金资助项目(JC04-11)
哈尔滨工业大学跨学科交叉性研究项目(HIT.MD2002.21)
关键词
厌氧
附着生长
硫酸盐
氨氮
氮气
anaerobic
attached - growth
sulfate
ammonium - nitrogen
nitrogen gas
