MAP晶体捕集反应器回收猪场厌氧消化液中磷的研究
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- 英文论文题名：Research on Phosphorus Recovery from Anaerobic-Digested Piggery Wastewater by MAP Crystal Collecting Reactor
- 论文作者：钱锋 ; 宋永会 ; 向连城 ; 田智勇 ; 袁芳
- 英文论文作者：QIAN Feng ; SONG Yong-hui ; TIAN Zhi-yong ; XIANG Lian-cheng ; YUAN Fang ; Department of Urban Water Environmental Research ; Chinese Research Academy of Environmental Sciences
- 年：2013
- 作者机构：中国环境科学研究院城市水环境科技创新基地;
- 论文关键词：MAP ; 曝气 ; 磷回收 ; 猪场厌氧消化液 ; 饱和度指数 ; 反应动力学
- 英文论文关键词：MAP ; aeration ; phosphorus recovery ; anaerobic-digested piggery wastewater ; saturation index ; reaction kinetics
- 会议召开时间：2013-12-26
- 会议录名称：2013年水资源生态保护与水污染控制研讨会论文集
- 语种：中文
- 分类号：X713
- 学会代码：HJKP
- 会议名称：2013年水资源生态保护与水污染控制研讨会
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国环境科学学会、环境保护部环境规划院、哈尔滨工业大学、哈尔滨师范大学、中国科学院南京地理与湖泊研究所
- 学会名称：中国环境科学学会
- 页数：9
- 文件大小：1542k
- 原文格式：D
- 会议级别：全国
摘要
研究了磷酸铵镁(MAP)结晶法晶体捕集反应器在曝气条件下回收猪场厌氧消化液中磷元素的能力。结果表明,利用曝气方式提高猪场厌氧消化液的p H值,进行MAP结晶回收磷完全可行。MAP的饱和度指数(SI)与废水p H值呈多项式函数关系,结晶反应的最佳p H值为8.5-9.0;随着曝气时间延长至180 min,反应器内废水p H值可提高至8.5;常温下(25℃),反应器内MAP回收磷的反应动力学的反应级数(n)为1.96,速率常数(K25)为1.53×10-4 L/(mg·min);反应器单个运行周期为270 min;磷的平均去除率为80%左右。MAP晶体捕集反应器上的晶体在一个反应周期内即可成形,随着反应周期的增加,晶体颗粒逐渐增大。利用扫描电镜和X射线衍射仪对捕集器所捕集的晶体进行了表征,证实晶体为高纯度的MAP。
Study was conducted on the phosphorus(P) recovery ability of magnesium ammonium phosphate(MAP) crystal collecting reactor from anaerobic-digested piggery wastewater under aeration condition through MAP crystallization. The results showed that it was feasible to recover P through MAP crystallization when p H value of anaerobic-digested piggery wastewater was raised by aeration. The saturation index(SI) of MAP was the polynomial function of piggery wastewater p H value, with the best p H value for crystallization at 8.5-9.0. The piggery wastewater p H value would be raised to 8.5, when the aeration was prolonged to be180 min. Under room temperature(25℃), the reaction kinetics order(n) of P recovery by MAP in the reactor was 1.96, with the rate constant(K25) at 1.53×10-4 L/(mg·min). With the reactor's single operating cycle of 270 min, the average P removal rate was around 80%. The collected crystal could be shaped on the MAP crystal collecting reactor within one cycle, and would grow gradually as the reaction cycle increases. The collected crystal was characterized by scanning electron microscopy and X-ray diffraction, and was proved to be MAP with high purity.
Study was conducted on the phosphorus(P) recovery ability of magnesium ammonium phosphate(MAP) crystal collecting reactor from anaerobic-digested piggery wastewater under aeration condition through MAP crystallization. The results showed that it was feasible to recover P through MAP crystallization when p H value of anaerobic-digested piggery wastewater was raised by aeration. The saturation index(SI) of MAP was the polynomial function of piggery wastewater p H value, with the best p H value for crystallization at 8.5-9.0. The piggery wastewater p H value would be raised to 8.5, when the aeration was prolonged to be180 min. Under room temperature(25℃), the reaction kinetics order(n) of P recovery by MAP in the reactor was 1.96, with the rate constant(K25) at 1.53×10-4 L/(mg·min). With the reactor's single operating cycle of 270 min, the average P removal rate was around 80%. The collected crystal could be shaped on the MAP crystal collecting reactor within one cycle, and would grow gradually as the reaction cycle increases. The collected crystal was characterized by scanning electron microscopy and X-ray diffraction, and was proved to be MAP with high purity.
引文
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[15]Arakane M,Imai T,Murakami S,et al.Resource recovery from excess sludge by subritical water combined with magnesium ammonium phosphate process[J].Water Science and Technology,2006,54(9):81-86.
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[20]Stratful I,Scrimshaw M D,Lester J N.Removal of struvite to prevent problems associated with its accumulation in wastewater treatment works[J].Water Environment Research,2004,76(5):437-443.
[21]Hirasawa I,Kaneko S,Kanai Y,et al.Crystallization phenomena of magnesium ammonium phosphate(MAP)in a fluidized-bed-type crystallizer[J].J Crystal Growth,2002,237-239:2183-2187.
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[23]王建森,宋永会,袁鹏,等.基于PHREEQC程序的磷酸铵镁结晶法污水处理工艺模型化研究[J].环境科学学报,2006,26(2):208-213.
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[25]Ali M I.Struvite crystallisation in fed-batch pilot scale and description of solution chemistry of struvite[J].Chemical Engineering Research and Design,2007,85(3):344-356.
[26]Elisabeth V M,Keith B.Controlled struvite crystallization for removing phosphorus from anaerobic digester sidestreams[J].Water Research,2001,35(1):151-159.
[2]Karakasheva D,Schmidt J E,Angelidaki I.Innovative process scheme for removal of organic matter,phosphorus and nitrogen from pig manure[J].Water Research,2008,42(15):4083-4090.
[3]宋永会,钱锋,向连城.磷酸钙沉淀法去除猪场废水中磷的实验研究[J].环境科学,2011,32(6):1679-1686
[4]CEEP.Phosphorus recovery for recycling from sewage and animal manures,Summary of the Second International Conference on Recovery of Phosphates from Sewage and Animal Wastes[M].Noordwijkerhout,The Netherlands,2001.
[5]赵庆良,刘志刚,李巍,等.MAP结晶法回收和去除尿液中的磷[J].环境科学,2007,28(10):2223-2229.
[6]Massey M S,Ippolito J A,Davis J G,et al.Macroscopic and microscopic variation in recovered magnesium phosphate materials:Implications for phosphorus removal processes and product re-use[J].Bioresource Technology,2010,101(3):877-885.
[7]Hao X D,Wang C C,Lan L,et al.Struvite formation,analytical methods and effects of p H and Ca2+[J].Water Science and Technology,2008,58(8):1687-1692.
[8]Palma L D,Ferrantelli P,Merli C,et al.Treatment of industrial landfill leachate by means of evaporation and reverse osmosis[J].Waste Management,2002,22(8):951-955.
[9]Jorgensen T C,Weatherley L R.Ammonia removal from wastewater by ion exchange in the presence of organic contaminants[J].Water Research,2003,37(8),1723-1728.
[10]Jordaan E M,ckerman J A,Cicek N.Phosphorus removal from anaerobically digested swine wastewater through struvite precipitation[J].Water Science and Technology,2010,61(12):3228-3234.
[11]Zhang T,Ding L L,Ren H Q,et al.Ammonium nitrogen removal from coking wastewater by chemical precipitation recycle technology[J].Water Research,2009,43(20):5209-5215.
[12]Warmadewanthi,Liu J C.Recovery of phosphate and ammonium as struvite from semiconductor wastewater[J].Separation and Purification Technology,2009,64(3):368-373
[13]Forrest A L,Mavinic D S,Koch F A.The measurement of magnesium:A possible key to struvite production and process control[J].Environmental Technology,2008,29(6):603-612
[14]Strickland J.Perspectives for phosphorus recovery offered by enhanced biological P removal[J].Environmental Technology,1999,20(7):721-725.
[15]Arakane M,Imai T,Murakami S,et al.Resource recovery from excess sludge by subritical water combined with magnesium ammonium phosphate process[J].Water Science and Technology,2006,54(9):81-86.
[16]Bhuiyan M I H,Mavinic D S,Beckie R D.Nucleation and growth kinetics of struvite in a fluidized bed reactor[J].Journal of Crystal Growth,2008,310(6):1187-1194.
[17]Grossl P R,Inskeep W P.Precipitation of dicalcium phosphate dehydrate in the presence of organic acids[J].Soil Science Society of America Journal,1991,55(3):670-675.
[18]Song Y H,Hahn H H,Hoffmann E.The effect of carbonate on the precipitation of calcium phosphate[J].Environmental Technology,2002,23:207-215.
[19]Williams S.,Struvite precipitation in the sludge stream at slough wastewater treatment plant opportunities for phosphorus recovery[J].Environmental Technology,1999,20(7):743-747.
[20]Stratful I,Scrimshaw M D,Lester J N.Removal of struvite to prevent problems associated with its accumulation in wastewater treatment works[J].Water Environment Research,2004,76(5):437-443.
[21]Hirasawa I,Kaneko S,Kanai Y,et al.Crystallization phenomena of magnesium ammonium phosphate(MAP)in a fluidized-bed-type crystallizer[J].J Crystal Growth,2002,237-239:2183-2187.
[22]Li X Z,Zhao Q L.Recovery of ammonium-nitrogen from landfill leachate as a multi-nutrient fertilizer[J].Ecological Engineering,2003,20(2):171-181.
[23]王建森,宋永会,袁鹏,等.基于PHREEQC程序的磷酸铵镁结晶法污水处理工艺模型化研究[J].环境科学学报,2006,26(2):208-213.
[24]国家环境保护总局.水和废水监测分析方法[M].4版.北京;中国环境科学出版社,2002.
[25]Ali M I.Struvite crystallisation in fed-batch pilot scale and description of solution chemistry of struvite[J].Chemical Engineering Research and Design,2007,85(3):344-356.
[26]Elisabeth V M,Keith B.Controlled struvite crystallization for removing phosphorus from anaerobic digester sidestreams[J].Water Research,2001,35(1):151-159.