硫磺和黄铁矿为填料的生物滤池自养反硝化强化处理二沉尾水
发布时间：2018-10-05 15:29
【摘要】：采用硫自养反硝化工艺处理模拟污水厂二沉尾水,分别以硫磺湓白云石、黄铁矿湓白云石为填料,考察不同填料下生物滤池的脱氮除磷效果.结果表明,在HRT(水力停留时间)为1 h的条件下,硫磺湓白云石反应器在10 d内能迅速启动,出水ρ(NO3--N)小于1.00 mg湓L,去除率高达99%,反应器的最佳实际HRT为45 min.进水中的DO对硫磺湓白云石反应器反硝化效果没有明显影响,但会对黄铁矿湓白云石反应器的反硝化效果产生影响.去除进水中的DO后,在HRT为4 d下,黄铁矿湓白云石反应器出水NO3--N和TP的质量浓度分别为10.31和0.10 mg湓L,其去除率分别为67.2%和90.7%.采用高速水流反冲洗后,两个反应器的脱氮效果均能在2 d内迅速恢复.在12℃的低温条件下,硫磺湓白云石和黄铁矿湓白云石反应器的处理效果均变化不大.去除一定量的NO3--N时,硫磺湓白云石反应器的SO42-生成量与理论值相符合,黄铁矿湓白云石反应器的略高于理论值.研究显示,硫磺湓白云石体系可有效去除二沉尾水中的NO3--N,而黄铁矿湓白云石体系具有同时脱氮除磷的功能.
[Abstract]:The sulfur autotrophic denitrification process was used to treat the secondary sedimentation tailings of the simulated wastewater treatment plant. The nitrogen and phosphorus removal effects of biological filter under different fillers were investigated with sulfur gouge dolomite and pyrite dolomite as fillers respectively. The results show that under the condition of HRT (hydraulic retention time) 1 h, the sulfur dolomite reactor can be started quickly within 10 days, the effluent 蟻 (NO3--N) is less than 1. 00 mg L, the removal rate is up to 99, and the optimum actual HRT of the reactor is 45 min.. The DO in the influent has no obvious effect on denitrification of brimstone dolomite reactor, but it will affect the denitrification effect of pyrite dolomite reactor. After the removal of DO from the influent, the mass concentrations of NO3--N and TP in the effluent of pyrite dolomite reactor were 10.31 and 0.10 mg respectively, and the removal rates were 67.2% and 90.7%, respectively, when the HRT was 4 days. The denitrification effect of the two reactors can be recovered rapidly in 2 days after backwashing with high speed flow. Under the low temperature of 12 鈩，
本文编号：2253910
[Abstract]:The sulfur autotrophic denitrification process was used to treat the secondary sedimentation tailings of the simulated wastewater treatment plant. The nitrogen and phosphorus removal effects of biological filter under different fillers were investigated with sulfur gouge dolomite and pyrite dolomite as fillers respectively. The results show that under the condition of HRT (hydraulic retention time) 1 h, the sulfur dolomite reactor can be started quickly within 10 days, the effluent 蟻 (NO3--N) is less than 1. 00 mg L, the removal rate is up to 99, and the optimum actual HRT of the reactor is 45 min.. The DO in the influent has no obvious effect on denitrification of brimstone dolomite reactor, but it will affect the denitrification effect of pyrite dolomite reactor. After the removal of DO from the influent, the mass concentrations of NO3--N and TP in the effluent of pyrite dolomite reactor were 10.31 and 0.10 mg respectively, and the removal rates were 67.2% and 90.7%, respectively, when the HRT was 4 days. The denitrification effect of the two reactors can be recovered rapidly in 2 days after backwashing with high speed flow. Under the low temperature of 12 鈩，
本文编号：2253910
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