论文部分内容阅读
煤矸石是我国煤炭工业主要的废弃物之一,一方面占用大量农田和土地,另一方面也成为固、液和气三害俱全的污染源,造成了一系列生态环境问题。为了加强对煤矸石利用以使其资源化,试验在分析煤矸石的理化性质的基础上,采用复合脱硫剂对煤矸石进行脱硫处理,探讨了脱硫煤矸石基质对小白菜的生长、产量和品质的影响。结果表明:煤矸石的容重小、孔隙度大、气水比适中,无重金属污染。当加入复合脱硫剂处理时,其对全硫和有效硫的脱除率分别为86.12%和89.16%。脱硫煤矸石基质栽培小白菜产量、维生素C和可溶性糖含量分别为4.51kg/m2、45.76mg/100g、60.2mg/kg,均高于土壤栽培,分别为土壤栽培的1.11、1.24、1.23倍,与炉渣栽培相接近,NO3-含量却低于土壤。
Coal gangue is one of the major wastes in China’s coal industry. On the one hand, it occupies a large amount of farmland and land. On the other hand, coal gangue also becomes a source of solid, liquid and gas tributaries, causing a series of ecological and environmental problems. In order to strengthen the use of coal gangue to make it resourceful, based on the analysis of the physical and chemical properties of coal gangue, the composite desulfurizer was used to desulfurize the coal gangue, and the effect of desulphurized coal gangue matrix on the growth, yield and quality of Chinese cabbage Impact. The results show that coal gangue has low bulk density, large porosity, moderate gas-water ratio and no heavy metal pollution. When the compound desulfurizer was added, the removal rates of total sulfur and available sulfur were 86.12% and 89.16% respectively. The yield of cabbage, vitamin C and soluble sugar in the base of desulfurized coal gangue were 4.51kg / m2, 45.76mg / 100g and 60.2mg / kg, respectively, which were higher than that of soil cultivation, which were 1.11, 1.24 and 1.23 times of soil culture, Close to the slag cultivation, NO3-content is lower than the soil.