4Tokyo Metropolitan Government Bureau of Sewage, "Phosphorus Removal from Filtrate Water of Sewage Sludge." http://www.gesui.metro.tokyo.jp/gijyutou/gm 12/nenpou2 001/04-03.pdf.
5Sano, A., Kanomata, M., Inoue, H., Sugiura, N., Xu, Kai-Qin and Inamori Y. 2012. "Extraction of Raw SewageSludge Containing Iron Phosphate for Phosphorus Recovery." Chemosphere 89: 1243-47.
6Takahashi, M., Takemoto, Y. and Hukaya, Y. 2009. "Recycle Technique of Iron Phosphate Containing Sludge", In Proceedings of R "09 Twin Worm Congress in Nagoya, 267.
8Sano, A., Xu, Kai-Qin., Kanomata, M,. Sugiura, N., Inoue, H. and Kondo, T. et al. 2012. "Phosphorus Recovery from Sewage Sludge for An On-Site Domestic Wastewater Treatment Facility (Johkasou) with Phosphorus Removal by Iron Electrolysis and Application of Recovery Material as Fertilizer." Johkasou Research 24: 1-7.
