| 鸟粪石沉淀法回收剩余污泥及其上清液中磷 |
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| 引用本文： | 田素凤,王静超,丁艳梅.鸟粪石沉淀法回收剩余污泥及其上清液中磷[J].哈尔滨商业大学学报(自然科学版),2012(2):194-196,218. |
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| 作者姓名： | 田素凤 王静超 丁艳梅 |
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| 作者单位： | 天津城市建设学院环境与市政工程系;天津城市建设学院环境与市政工程系水质科学与技术天津市重点实验室;天津市华博水务有限公司 |
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| 基金项目： | 天津市高等学校科技发展基金计划项目(20060521) |
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| 摘 要： | 以剩余污泥为研究对象,考察了pH值和温度变化对鸟粪石沉淀法回收磷效果的影响.结果表明,回收率随着pH值的升高或降低均得到提高,在pH=3时达到最大值;在酸性或碱性条件下运行对温度具有较强的缓冲能力.采用正交试验对污泥上清液中磷进行回收,通过对极差分析得到影响回收率的条件依次为:pH值>初始磷酸盐质量浓度>nMg/nP>反应时间.最佳pH值范围9.5～10.5,但为减少挥发的氨氮含量,pH值应控制在10以下.鸟粪石沉淀法可与生物法综合利用,达到污泥处理的减量化和资源化.
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| 关 键 词： | 剩余污泥 污泥上清液 鸟粪石 回收磷 |
Study on phosphorus recovery from excess sludge and supernatant by struvite precipitation |
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| TIAN Su-feng,WANG Jing-chao,DING Yan-mei.Study on phosphorus recovery from excess sludge and supernatant by struvite precipitation[J].Journal of Harbin University of Commerce :Natural Sciences Edition,2012(2):194-196,218. |
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| Authors: | TIAN Su-feng WANG Jing-chao DING Yan-mei |
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| Affiliation: | 1,2(1.Department of Environmental and Municipal Engineering,Tianjin Urban Construction Institute,Tianjin 300384,China; 2.Tianjin Key Laboratory of Aquatic Science and Technology of Department of Environmental and Municipal Engineering, Tianjin Urban Construction Institute,Tianjin 300384,China;3.Tianjin Huabo Waterworks Co.Ltd.,Tianjin 300040,China) |
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| Abstract: | Taking excess sludge as a research object,the impacts of pH and temperature on phosphorus recovery by struvite precipitation were investigated.The results showed that the recovery rates rise with the increased and decreased pH,and reach the maximum value at pH=3.The enhancement of temperature buffer capacity was on the acidic or basic condition operation.The orthogonal experiment was taken on the phosphorus recovery from sludge supernatant.The impact extent of different factors on recovery ratio follows as: pH>initial phosphate concentration>nMg/nP>reaction time by range analysis.The optimized pH range was 9.5~10.5.To decrease the content of volatile NH3—N,the pH condition was controlled below 10.The combination of struvite precipitation and biology technology could achieve the decreasing and resource utilization of waste sludge. |
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| Keywords: | excess sludge sludge supernatant struvite phosphorus recovery |
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