[1]邹海明,吕锡武,李婷.诱导HAP结晶回收污水中磷主要影响因素分析[J].东南大学学报(自然科学版),2013,43(5):1005-1010.[doi:10.3969/j.issn.1001-0505.2013.05.018]
 Zou Haiming,Lu Xiwu,Li Ting.Analysis of major influential factors on phosphorus recovery from wastewater using induced HAP crystallization process[J].Journal of Southeast University (Natural Science Edition),2013,43(5):1005-1010.[doi:10.3969/j.issn.1001-0505.2013.05.018]
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诱导HAP结晶回收污水中磷主要影响因素分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第5期
页码:
1005-1010
栏目:
环境科学与工程
出版日期:
2013-09-20

文章信息/Info

Title:
Analysis of major influential factors on phosphorus recovery from wastewater using induced HAP crystallization process
作者:
邹海明12吕锡武1李婷1
1东南大学能源与环境学院, 南京210096; 2安徽科技学院城建与环境学院, 凤阳233100
Author(s):
Zou Haiming12 Lu Xiwu1 Li Ting1
1School of Energy and Environment, Southeast University, Nanjing 210096, China
2School of Urban Construction and Environment, Anhui Science and Technology University, Fengyang 233100, China
关键词:
磷回收 诱导结晶 羟基磷酸钙 流态化结晶柱 方解石
Keywords:
phosphorus recovery induced crystallization hydroxyl calcium phosphate fluidized crystallizer calcite
分类号:
X703.1
DOI:
10.3969/j.issn.1001-0505.2013.05.018
摘要:
为了从污水中回收磷,采用以方解石为晶种在流态化结晶反应柱中诱导羟基磷酸钙(HAP)结晶的方法,考察了反应时间、反应温度、晶种投加量、pH值、Ca/P摩尔比、曝气量对诱导HAP结晶效果的影响.试验结果表明:该诱导结晶反应属于准一级反应,反应的活化能为5.96 kJ/mol;pH值对HAP诱导结晶反应影响较大,当pH>8.5时可获得较好的磷回收率.最佳工艺参数为:当进水中磷浓度为20 mg/L、pH为9、反应时间为100 min、Ca/P摩尔比2.5、晶种投加量为60 g/L、反应温度为室温(20±1)℃、曝气量为270 L/h时,诱导结晶反应柱内磷回收率可达92.5%.以上结果表明,以投加晶种诱导HAP结晶的方式回收污水中的磷是可行的,与反硝化同步脱氮除磷工艺耦合将有助于提高污水处理效果和资源回收再利用.
Abstract:
An induced hydroxyl calcium phosphate(HAP)crystallization process was adopted for phosphorus(P)recovery from wastewater, in which the major influential factors including the reaction time, the reaction temperature, seed crystal loads, the pH value, the molar ratio of Ca/P and the aeration rate were investigated by batch tests. The results show that the induced HAP crystallization belongs to the pseudo first-order reaction with the activation energy of 5.96 kJ/mol. The process is obviously affected by the influent pH and a high P recovery rate is found when the given pH is above 8.5. The P recovery rate of 92.5% can be obtained under the optimum process parameters: pH is 9.0; the molar ratio of Ca/P is 2.5; the seed load is 60 g/L, the aeration rate is 270 L/h with the reaction time of 100 min at the room temperature when the influent P concentration is 20 mg/L. Therefore it is known that phosphorus in wastewater can be effectively recovered using the induced HAP crystallization. This process combined with denitrifying simultaneous nitrogen and phosphorus removal system may contribute to enhancement of the qualities of effluent from the wastewater treatment process and recycle of wastewater resources.

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备注/Memo

备注/Memo:
作者简介: 邹海明(1977—),男,博士生;吕锡武(联系人),男,博士,教授,博士生导师,xiwulu@seu.edu.cn.
基金项目: “十二五”国家水体污染控制与治理科技重大专项资助项目(2012ZX07101-005)、国家自然科学基金资助项目(51078074)、江苏省科技支撑计划资助项目(BS 2008667).
引文格式: 邹海明,吕锡武,李婷.诱导HAP结晶回收污水中磷主要影响因素分析[J].东南大学学报:自然科学版,2013,43(5):1005-1010. [doi:10.3969/j.issn.1001-0505.2013.05.018]
更新日期/Last Update: 2013-09-20