生活污水中约80%的氨氮来自尿液,收集尿液并脱氮处理可极大减轻生活污水处理负荷.本实验用Ti/Ru O2-Ti O2电极作为阳极,不锈钢板作为阴极,在有机玻璃电解槽中研究考察电流密度（20~100 m A/cm^2）、储存尿液初始p H（9~12）以及Na Cl投...生活污水中约80%的氨氮来自尿液,收集尿液并脱氮处理可极大减轻生活污水处理负荷.本实验用Ti/Ru O2-Ti O2电极作为阳极,不锈钢板作为阴极,在有机玻璃电解槽中研究考察电流密度（20~100 m A/cm^2）、储存尿液初始p H（9~12）以及Na Cl投加量（4~16 g/L）对储存尿液（250 m L）的脱氮效果.结果表明,最佳脱氮工艺参数为：电流密度80 m A/cm^2,初始p H在11左右,Na Cl投加量为8 g/L,电解时间达到270 min.在此最优化条件下,氨氮和总氮的去除率分别是91.83%和88.34%;处理1 L尿液消耗0.311 k W·h电能.可见,该方法具有快速、低能耗、高效优点,在源分离尿液氮处理方面具有应用前景.展开更多
To study the effects of different storage methods and time on content of nutrients in biogas slurry of straw, two storage methods were carried out on biogas slurry between open storage and airtight storage conditions ...To study the effects of different storage methods and time on content of nutrients in biogas slurry of straw, two storage methods were carried out on biogas slurry between open storage and airtight storage conditions at normal atmospheric temperature. The contents of N, P, K, and organic matter in biogas slurry of straw were determined in different storage times. The results showed that： during the pro-cess of biogas slurry storage, little change occurred in the content of the organic matter while the total content of N, P, K significantly declined; up to 50 days, the total content of N, P, K reduced to nearly 80%-90%. Because the contents of N, P, K in biogas slurry reduced less in airtight storage conditions so that a better re-sult was found on airtight storage methods than open storage methods in fertilizer field of biogas slurry of straw.展开更多
文摘生活污水中约80%的氨氮来自尿液,收集尿液并脱氮处理可极大减轻生活污水处理负荷.本实验用Ti/Ru O2-Ti O2电极作为阳极,不锈钢板作为阴极,在有机玻璃电解槽中研究考察电流密度（20~100 m A/cm^2）、储存尿液初始p H（9~12）以及Na Cl投加量（4~16 g/L）对储存尿液（250 m L）的脱氮效果.结果表明,最佳脱氮工艺参数为：电流密度80 m A/cm^2,初始p H在11左右,Na Cl投加量为8 g/L,电解时间达到270 min.在此最优化条件下,氨氮和总氮的去除率分别是91.83%和88.34%;处理1 L尿液消耗0.311 k W·h电能.可见,该方法具有快速、低能耗、高效优点,在源分离尿液氮处理方面具有应用前景.
基金Supported by Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period(2012BAJ21B04-04)Shandong Environment Bottlenecks Analysis Project(SDHBPJ-ZB-05)~~
文摘To study the effects of different storage methods and time on content of nutrients in biogas slurry of straw, two storage methods were carried out on biogas slurry between open storage and airtight storage conditions at normal atmospheric temperature. The contents of N, P, K, and organic matter in biogas slurry of straw were determined in different storage times. The results showed that： during the pro-cess of biogas slurry storage, little change occurred in the content of the organic matter while the total content of N, P, K significantly declined; up to 50 days, the total content of N, P, K reduced to nearly 80%-90%. Because the contents of N, P, K in biogas slurry reduced less in airtight storage conditions so that a better re-sult was found on airtight storage methods than open storage methods in fertilizer field of biogas slurry of straw.
