冲厕水中氮磷去除的气雾栽培法处理技术

Technology of Aerosol Cultivation for Nitrogen and Phosphorus Removal in Toilet Flushing Wastewater Treatment

以研发绿色建筑生活污水的处理为目的,考察了植物+填料系统、植物系统、无植物系统三种气雾方式及静止对比样对不同浓度冲厕水中氮磷的处理效果。结果表明,间歇式气雾栽培模式明显提高了对氮磷的去除效果,悬挂颗粒活性炭填料可促进对氨氮和总氮的去除效果,种植植物能够促进对磷的去除,对于氨氮、总氮和总磷的去除,存在植物+填料系统>植物系统>无植物系统>静止对比样的趋势。在冲厕水与自来水稀释比在5:5以下时,试验用草莓生长良好;当浓度增大到6:4以上,草莓开始死亡。当试验用水的氨氮浓度为2.83~275.54 mg/L、总氮为4.36~296.67 mg/L、总磷为0.73~20.67 mg/L时,植物+填料系统、植物系统、无植物系统相应的去除率分别可达到85.92%~99.31%、83.49~96.59%、71.11%~97.90%;29.94%~68.76%、24.60~54.87%、10.28%~53.95%;47.82%~74.79%、40.16~74.49%、20.64%~71.12%。

To develop wastewater treatment technology for green building,removal rate of nitrogen and phosphorus from toilet flushed wastewater by 4 methods were studied,which were aerosol cultivation with hanging filler system,aerosol cultivation system, aerosol system and static contrast system. Results showed that removal rate of nitrogen and phosphorus was apparently increased by aerosol process,removal rate of nitrogen was promoted by the hanging filler and removal rate of phosphorus was promoted by plants. Besides, the order of removal efficiency was identical for ammonia,nitrogen and phosphorus as aerosol cultivation with hanging filler system, aerosol cultivation system,aerosol system and static contrast system. When dilution multiple of flushed water to tap water was under 55,strawberries as the tested plants could grow well,but these plants began to death while dilution multiple was increased to 6： 4. When concentration of ammonia,nitrogen and phosphorus were 2. 83 ？275. 54,4. 36 ？296. 67,0. 73 ？20. 67 mg/L, respectively, removal rate was 85.92% -99.31% , 83.49 -96.59%,71.11% -97.90% ; 29.94% -68.76% , 24.60 -54.87%,10.28% - 53.95% ; 47.82% -74.79% , 40.16 -74.49% , 20.64% -71.12%.