| 酸碱调节对混合污泥中氮、磷溶出的影响 |
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| 引用本文： | 汤韬,员建,苑宏英,吴丽杰,宋建阳,祁丽.酸碱调节对混合污泥中氮、磷溶出的影响[J].环境工程,2012(Z2):283-285. |
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| 作者姓名： | 汤韬 员建 苑宏英 吴丽杰 宋建阳 祁丽 |
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| 作者单位： | 天津城市建设学院环境与市政工程学院;天津市水质科学与技术重点试验室 |
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| 基金项目： | 天津市滨海新区科技计划项目(2011-BH14003);国家水体污染控制与治理科技重大专项(2008ZX07314-005) |
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| 摘 要： | 为了研究不同酸碱调节下混合污泥(初沉池污泥与剩余污泥按约4∶6的比例混合)中氮磷溶出的变化规律,考察了天津市某污水厂的混合污泥在酸性(pH=3.0),碱性(pH=10.0)以及pH值不调节的情况下,在15～20℃水解酸化过程中氨氮(NH4+-N)和磷酸盐(PO43--P)的释放规律。结果表明:对混合污泥进行pH调节可以提高氨氮和磷酸盐的释放量,且混合污泥中氨氮的释放量表现为碱性>对比试验>酸性;磷酸盐的释放量表现为酸性>对比试验>碱性。
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| 关 键 词： | 酸碱性调节 混合污泥 氨氮 磷酸盐 |
IMPACT OF THE ADJUST OF ACID AND ALKALI ON THE DISSOLUTION OF NITROGEN AND PHOSPHORUS IN THE MIXED SLUDGE |
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| Tang Tao,Yuan Jian,Yuan Hongying,Wu Lijie,Song Jianyang,Qi Li.IMPACT OF THE ADJUST OF ACID AND ALKALI ON THE DISSOLUTION OF NITROGEN AND PHOSPHORUS IN THE MIXED SLUDGE[J].Environmental Engineering,2012(Z2):283-285. |
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| Authors: | Tang Tao Yuan Jian Yuan Hongying Wu Lijie Song Jianyang Qi Li |
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| Institution: | 1,2(1.School of Environmental and Municipal Engineering,Tianjin Institute of Urban Construction,Tianjin 300384,China; 2.Tianjin Key Laboratory of Water Quality Science and Technology,Tianjin 300384,China) |
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| Abstract: | For the research on the rule of dissolving nitrogen and phosphorus in the mixed sludge(mix the sludge from the primary settling tank and the excess activated sludge with the proportion 4∶6)under different pH,it was tested the mixed sludge from one sewage plant in Tianjin under the acid condition(pH=3.0),alkali condition(pH=10.0) and the condition of pH is without adjustment.The results showed that the adjust ment of pH could improve the release amount of ammonia nitrogen and phosphate,while the release amount of ammonia nitrogen in the mixed sludge represented as alkalinity > contrast > acidity.The release amount of phosphate represented as acidity > contrast > alkalinity,while alkaline conditions were not conducive to the release of phosphate. |
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| Keywords: | adjustment with acid and alkali mixed sludge ammonia nitrogen phosphate |
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