

@article {2432,
	title = {{Advanced treatment of swine wastewater using an agent synthesized from amorphous silica and hydrated lime.}},
	journal = {Environmental technology},
	volume = {35},
	number = {21-24},
	year = {2014},
	month = {jan},
	pages = {2982{\textendash}7},
	publisher = {Taylor \& Francis},
	abstract = {Advanced treatment using an agent synthesized from amorphous silica and hydrated lime (M-CSH-lime) was developed and applied to swine wastewater treatment. Biologically treated wastewater and M-CSH-lime (approximately 6 w/v\% slurry) were fed continuously into a column-shaped reactor from its bottom. Accumulated M-CSH-lime gradually formed a bed layer. The influent permeated this layer and contacted the M-CSH-lime, and the treatment reaction progressed. Treated liquid overflowing from the top of the reactor was neutralized with CO$_{2}$gas bubbling. The colour removal rate approximately exceeded 50\% with M-CSH-lime addition rates of > 0.15 w/v\%. The removal rate of PO(3$^{-}$)(4) exceeded 80\% with the addition of>0.03 w/v\% of M-CSH-lime. The removal rates of coliform bacteria and Escherichia coli exceeded 99.9\% with > 0.1 w/v\%. Accumulated M-CSH-lime in the reactor was periodically withdrawn from the upper part of the bed layer. The content of citric-acid-soluble P$_{2}$O$_{5}$ in the recovered matter was>15\% when the weight ratio of influent PO(3$^{-}$)(4) -P to added M-CSH-lime was > 0.15. This content was comparable with commercial phosphorus fertilizer. The inhibitory effect of recovered M-CSH-lime on germination and growth of leafy vegetable komatsuna (Brassica rapa var. perviridis) was evaluated by an experiment using the Neubauer{\textquoteright}s pot. The recovered M-CSH-lime had no negative effect on germination and growth. These results suggest that advanced water treatment with M-CSH-lime was effective for simultaneous removal of colour, [Formula: see text] and coliform bacteria at an addition rate of 0.03-0.15 w/v\%, and that the recovered M-CSH-lime would be suitable as phosphorus fertilizer.},
	keywords = {Animals, Brassica rapa, Brassica rapa: drug effects, Brassica rapa: growth \& development, Calcium Compounds, Calcium Compounds: chemistry, Calcium Compounds: toxicity, Color, Enterobacteriaceae, Enterobacteriaceae: isolation \& purification, Fertilizers, Fertilizers: toxicity, Fluid, Fluid: methods, Germination, Germination: drug effects, Heavy, Heavy: analysis, Metals, Oxides, Oxides: chemistry, Oxides: toxicity, Phosphates, Phosphates: analysis, Silicon Dioxide, Silicon Dioxide: chemistry, Silicon Dioxide: toxicity, Swine, Waste Disposal, Waste Water, Water Pollutants, Water Pollutants: analysis},
	issn = {0959-3330},
	doi = {10.1080/09593330.2014.927533},
	url = {http://www-tandfonline-com.sire.ub.edu/doi/full/10.1080/09593330.2014.927533},
	author = {Tanaka, Yasuo and Hasegawa, Teruaki and Sugimoto, Kiyomi and Miura, Keiichi and Aketo, Tsuyoshi and Minowa, Nobutaka and Toda, Masaya and Kinoshita, Katsumi and Yamashita, Takahiro and Ogino, Akifumi}
}
