【摘要】 针对高盐、高有机物含量的工业废水难以治理的问题，研究首先利用固化剂对旧电池拆解的负极材料进行固化制备出三维粒子电极。随后利用三维电解/吹脱/生物降解联合工艺对该废水进行处理。结果显示该工艺可以实现在高盐度废水中COD与氨氮等有机污染物的有效降解。对本研究所采用的化工废水而言，当废水在电流密度45 m A/cm²时电解3 h，再调节pH在10～11吹脱3 h，随后在电流密度65 m A/cm²下再次电解3 h，该预处理单元可使废水COD由48 000 mg/L降至22 670 mg/L,NH₄⁺-N由15 300 mg/L降至1 310 mg/L,SO₄^2-为8 100 mg/L降至2 250 mg/L。生物降解工艺采用生物选择、厌氧与好氧结合。厌氧生物反应器采用颗粒污泥与球型网状填料混合，当水力停留时间在24 h左右时可实现进水COD的降解率达85%左右。整体上，该联合处理工艺可使废水的COD出水低于300 mg/L，满足排放要求。更多还原

【Abstract】 In response to the difficulty in treating industrial wastewater with high salt and organic matter content,a curing agent was used to solidify the negative electrode material of old battery disassembly, and then it was sintered to prepare a three-dimensional particle electrode. Subsequently, the wastewater was treated using a three-dimensional electrolysis/blow off/biodegradation combined process. The results showed that this process can effectively degrade organic pollutants such as COD and ammonia nitrogen in high salinity wastewater. When the wastewater was electrolyzed for 3 h at a current density of 45 m A/cm², then p H was adjusted to 10 to 11 for 3 h of stripping, and then electrolyzed again for 3 h at a current density of 65 m A/cm², COD of the wastewater could be reduced from 48 000 mg/L to 22 670 mg/L, NH₄⁺-N could be reduced from 15 300 mg/L to 1310 mg/L, and SO₄^2- could be reduced from 8 100 mg/L to 2 250 mg/L. The biodegradation process adopted a combination of biological selection, anaerobic and aerobic methods. The anaerobic bioreactor used a mixture of granular sludge and spherical mesh packing. When the hydraulic retention time was around 24 h, the degradation rate of influent COD could reach about 85%. Overall, the combined treatment process could reduce COD content of wastewater to below 300 mg/L, meeting the discharge requirements.更多还原