Removal and recovery of phosphorus using struvite crystallization from thickener effluent of swine wastewater treated with coagulant and machine separation.
Removal and recovery of phosphorus using struvite crystallization from thickener effluent of swine wastewater treated with coagulant and machine separation.
复制标题
采用混凝剂和机器分离处理的养猪废水浓缩机出水中的鸟粪石结晶去除和回收磷。
DOI：
10.5938/youton.47.187
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Kazuyoshi Suzuki
中科院分区：
文献类型：
--
作者：
Yuichiro Wakiya;M. Ishida;T. Uchida;S. Furuta;M. Sekido;H. Kawahara;E. Kawamura;Kazuyoshi Suzuki
为了建立陶瓷鸟粪石(磷酸铵镁)结晶法去除和回收猪场废水中磷的工艺，我们设计了一种更新的鸟粪石反应器，并研究了其结晶性能，采用混凝和机械分离处理的猪场废水稠化液。提供微气泡以提高曝气效率，并用鼓风机以每小时m的速度连续曝气。采用浸泡在氯化镁·水溶液中的星形陶瓷作为鸟粪石回收材料。在鸟粪石反应器中连续引入浓缩液。M(HRT为小时)，加入氯化镁·水溶液(升/天)。检查进行了几天。结果表明，生猪废水的pH值在冬秋季呈上升趋势，可溶性PO-P浓度随pH值的升高而下降。增稠液的pH值高于生猪废水，而可溶性PO-P的平均浓度低于生猪废水。Mg/TO。Mg/在混凝剂和机器分离期间。由于采用新的曝气条件回收鸟粪石，提高了鸟粪石的结晶效率，使浓缩液中的磷在PO-P浓度较低的情况下以鸟粪石的形式回收。Mg/。为了提高鸟粪石的回收率，必须采用fi的pH控制技术，以保持浓缩液中高度可溶的PO-P浓度。
To establish technology for phosphorus removal and recovery from swine wastewater using the struvite (magnesium ammonium phosphate) crystallization method with ceramics, we designed a renewal struvite reactor and investigated its performance on crystallization, using thickener e uent from swine wastewater treated with coagulant and machine separation. supply micro air bubbles to improve aeration e ciency, and aerated continuously at m per hour with a blower. Star-shaped ceramics submerged in MgCl · H O solution were used as struvite recovery materials. Thickener e uent was introduced into the struvite reactor continuously at . m (HRT of . hrs) per day, with the addition of MgCl · H O solution ( liters per day). The examination was carried out for days. The results showed that the pH of raw swine wastewater rose for the period from winter to autumn, and the soluble PO -P concentration decreased along with the rise of its pH. The pH of thickener e uent was higher than raw swine wastewater, and average soluble PO -P concentration decreased from . mg/ to . mg/ during coagulant and machine separation. Because of the improvement in struvite crystallization e ciency by using the new aeration conditions for struvite recovery, of phosphorus in thickener e uent was recovered as struvite while its PO -P concentration was low at . mg/ . To increase struvite recovery e ciency, it is necessary to confirm the pH control techniques for keeping highly soluble PO -P concentration in the thickener e uent.