CAJ | 학술논문

研究了粪液固体浓度和硫细菌混合菌液接种量对猪粪中重金属生物沥浸的影响.结果表明, 猪粪固体浓度越低, 重金属沥浸周期越短,沥浸效果越好.从沥浸效果和经济效益2方面综合考虑,固体质量浓度采用70~100 g·L~(-1)较为合适.接种量也是影响生物沥浸的重要因素,试验结果表明,接种量越大,生物沥浸速度越快,但接种量小的粪样只需适当延长沥浸时间即可达到较高的重金属去除效果,2%接种量的猪粪沥浸14 d时,Cu、Zn和Cd沥出率可分别达到76.9%、75.2%和47.8%.从经济角度考虑,接种量采用2%即可满足生物沥浸的需要.
연구료분액고체농도화류세균혼합균액접충량대저분중중금속생물력침적영향.결과표명, 저분고체농도월저, 중금속력침주기월단,력침효과월호.종력침효과화경제효익2방면종합고필,고체질량농도채용70~100 g·L~(-1)교위합괄.접충량야시영향생물력침적중요인소,시험결과표명,접충량월대,생물력침속도월쾌,단접충량소적분양지수괄당연장력침시간즉가체도교고적중금속거제효과,2%접충량적저분력침14 d시,Cu、Zn화Cd력출솔가분별체도76.9%、75.2%화47.8%.종경제각도고필,접충량채용2%즉가만족생물력침적수요.
Effects of concentration of solids in liquid manure and amount of mixed sulfur bacteria liquid inoculated on bioleaching of heavy metals from pig manure were studied. Results indicate that the lower the concentration of solids in liquid manure, the shorter the heavy metal bioleaching cycle and the better the heavy metal removing efficiency. Based on the overall consideration of both bioleaching effect and economic benefit, it is appropriate to have the concentration of solids in liquid manure be kept at 70-100 g·L~(-1). Inoculation rate is also an important factor. Results show that the higher the inoculation rate, the higher the bioleaching rate. However, in pig manure with lower inoculation rate, longer leaching time could lead to higher removal efficiency. In pig manure with 2% in inoculation rate and 14 days' of leaching, Cu, Zn and Cd removed by 76.9% , 75.2% and 47.8% , respectively. From economic aspect, the inoculation rate of 2% is adequate to meet the need of bioleaching.