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以造纸污泥为原料,添加不同的调理剂,研究其对造纸污泥堆肥的影响,结果表明:以水稻秸秆作为调理剂的处理无法达到高温。添加米糠作为调理剂的处理升温最快,温度最高;添加蘑菇渣作为调理剂的处理也可达到高温,温度却偏低,但高温期较添加米糠长;水稻秸秆作为调理剂处理的pH整体较低,添加米糠处理和添加蘑菇渣处理pH相近。各处理EC均较低,堆肥结束时3个处理EC分别为2.0、2.1和1.2mS/cm。水稻秸秆处理的全氮呈不断上升趋势,添加米糠处理和添加蘑菇渣处理全氮基本不变。至堆肥结束时,水稻秸秆处理全氮含量比堆肥初始增加58.6%,而添加米糠处理和添加蘑菇渣处理分别比堆肥初始时低了3.3%和0.98%。至堆肥结束,3个处理DOC含量分别比初始时降低48.7%、68.2%和49.1%,GI分别为85.9%、110.5%和95.2%。各堆肥后的产品重金属含量均低于农用污泥中污染物控制标准值,养分含量增加。
Using papermaking sludge as raw material, different conditioning agents were added to study the effect of sludge on the compost of papermaking sludge. The results showed that the treatment with rice straw could not reach the high temperature. Adding rice bran as conditioning agent increased the temperature and reached the highest temperature. Adding mushroom residue as the conditioning agent could reach high temperature and low temperature, but the rice bran was longer than rice bran during the high temperature period. The overall pH of rice straw treated with conditioning agent Low, adding rice bran treatment and adding mushroom residue treatment pH is similar. Each treatment EC was lower, and the three treatments EC at the end of compost were 2.0, 2.1 and 1.2 mS / cm, respectively. Total nitrogen in rice straw treatment showed a rising trend. Adding rice bran and adding mushroom residue to treat total nitrogen basically remained unchanged. At the end of composting, the total nitrogen content of rice straw increased 58.6% compared with the initial compost, while adding rice bran and adding mushroom residue were 3.3% and 0.98% lower than the initial composting. At the end of composting, the DOC contents of the three treatments were reduced by 48.7%, 68.2% and 49.1%, respectively, and the GIs were 85.9%, 110.5% and 95.2%, respectively. The contents of heavy metals in the compost products were lower than the standard values of pollutants control in agricultural sludge, nutrient content increased.