膜集成技术处理马铃薯淀粉废水的实验研究

Experimental Study on Integrating Membrane Technology of the Potato Starch Wastewater

采用膜集成技术作为马铃薯淀粉废水深度处理工艺,进一步去除前期絮凝沉淀处理后的有机物。选择了截留分子量为10 KD的超滤膜+反渗透的处理工艺。结果显示:在温度为25℃,压力为0.15 MPa条件下运行时,超滤膜对COD的去除率为15%~25%,对SS的去除率>99%;超滤出水经反渗透膜处理后,COD的去除率≥98.8%。系统出水COD<100 mg/L,BOD5<10 mg/L,去除效果好,系统长期运行稳定。产水水质达到淀粉工业水污染物排放标准(GB 25461-2010)要求。

The potato starch wastewater depth processing craft uses the membrane integration technology.Further remove early after flocculation precipitation process of organic matter. Chose the ultrafiltration membrane with molecular weight of 10 KD and reverse osmosis treatment process.results show that under the condition that temperature is 25 ℃ and the pressure is 0.15 MPa,the removal efficiency of COD by the ultrafiltration is15%~25%.SS〉99%;By the reverse osmosis membrane treatment, the removal efficiency of COD≥98.8%, The system of the water COD〈100 mg/L,BOD510 mg/L、It is good treatment effect, The performance of the system was stable. The quality of the produce water come up to the standard of《Discharge standard of water pollutants for starch industry》（GB 25461-2010）.