Suzuki Kazuyoshi, Tanaka Yasuo, Kuroda Kazutaka, Hanajima Dai, Fukumoto Yasuyuki, Yasuda Tomoko, Waki Miyoko
Pollution Control Research Team, National Institute of Livestock and Grassland Science (NILGS), 2 Ikenodai, Tsukuba, Ibaraki 305-0901, Japan.
Bioresour Technol. 2007 May;98(8):1573-8. doi: 10.1016/j.biortech.2006.06.008. Epub 2006 Aug 21.
A demonstration crystallization reactor and struvite accumulation device for the removal and recovery of phosphorous was constructed and their performance was evaluated using actual swine wastewater for 3.5 years. The wastewater pH was increased by aeration, and the concentrations of total P and soluble PO(4)-P were reduced by a struvite crystallization reaction induced under a high pH condition. A 30% MgCl(2) addition was effective in enhancing the struvite crystallization reaction. The concentrations of suspended solids, total Zn and total Cu, were also decreased by the settling function of the reactor. On removing the efficiencies of these components, no noticeable seasonal fluctuation in performance was observed during the 3.5-year operation. In terms of maximum yield, 171g struvite was obtained from 1m(3) swine wastewater by the demonstration accumulation device for struvite recovery. The recovered struvite needed only air-drying before use since it was approximately 95% pure even without washing.
构建了用于磷去除和回收的示范结晶反应器及鸟粪石积累装置，并使用实际猪废水对其性能进行了3.5年的评估。通过曝气提高废水pH值，并在高pH条件下引发鸟粪石结晶反应，降低总磷和可溶性PO(4)-P的浓度。添加30%的MgCl(2)可有效增强鸟粪石结晶反应。反应器的沉降功能还降低了悬浮固体、总锌和总铜的浓度。在3.5年的运行期间，就这些成分的去除效率而言，未观察到性能有明显的季节性波动。就最大产量而言，示范鸟粪石回收积累装置从1立方米猪废水中获得了171克鸟粪石。回收的鸟粪石即使不洗涤纯度也约为95%，使用前只需风干即可。
