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이용두 ( Lee Yong Du ),신우석 ( Sin U Seog ),김상현 ( Kim Sang Hyeon ),김창영 ( Kim Chang Yeong ) 한국수처리학회 2004 한국수처리학회지 Vol.12 No.1
N/A This study aims to investigate the characteristic of swine wastewater treatment by liquefied fertilizer tank and outlne of optirnuin manuring of liquefied fertilizer. The results of this study were summarized as follows: The concentrations of BOD5 in raw manure are 15,320 ㎎/L at slurry/scraper type 19,950 ㎎/L at slurry type and 9,010 ㎎/L at scraper type of piggery. The removal rates of the organic substance were 45.3% at slurry/scraper type 54.8% at slurry type and 61.3% at scraper type of piggery. The concentration of NH₃-N was relatively higher at slurry/scrapei type and at slurry type of piggery which contained more feces than at scraper type of piggery. Frorn the beginning of storage to 100 days the concentration of N and P was changed unsteadily, but after 130 days N and P was shown relatively stable concentration. As standard of N concentration after 6 months storage. the required atea of grassy place per a head of animal is 295 ㎡/head at slurry/scraper type 318㎡/ihead at slurry type and 294 ㎡/head at scraper type of piggery.
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