印染污泥固化及稳定化处理研究
Study on solidification/stabilization treatment of textile dyeing sludge
-
摘要: 采用水泥、粉煤灰和煤渣作为固化剂对印染污泥进行固化/稳定化处理，并探讨了固化/稳定化的最佳工艺条件。当水泥、粉煤灰和煤渣的掺量分别为0.15、0.02和0.08 kg/kg，养护天数为6 d时，印染污泥固化块抗压强度达到330 kPa，含水率为44.6%，符合填埋场的进场标准。固化块浸出液中Cr、Cu、Ni、Pb、Zn和COD浓度同固化前相比，分别降低了88.9%、83.3%、88.9%、47.4%和69.3%，Cd则均未检出。固化剂对印染污泥中重金属及COD等污染物具有较好的固定作用。Abstract: Sludge from textile dyeing was solidified and stabilized by using cement, PFA and cinder as the solidifying agents，and the optimum conditions of sludge solidification/stabilization were analyzed. Under the dosage of cement, PFA and cinder of 0.15, 0.02 and 0.08 kg/kg, respectively, and curing time of 6 days, the compressive strength of the solidified sludge block reached 330 kPa while the moisture content of the solidification block reached 44.6%，which met with the standards of landfill. Compared with the untreated textile dyeing sludge，the concentration of Cr、Cu、Ni、Pb、Zn and COD of the leaching from the sludge solidification block was reduced by 88.9%、83.3%、88.9%、47.4% and 69.3%， respectively，the Cd was undetectable. Solidifying agents have good effects on the solidification and stabilization of organic and heavy metal in textile dyeing sludge.
-
Key words:
- textile dyeing sludge /
- solidification /
- stabilization /
- heavy metal /
- compressive strength
-
-
点击查看大图
计量
- 文章访问数: 1724
- HTML全文浏览数: 664
- PDF下载数: 1266
- 施引文献: 0
下载:
