Also a reasonable surfactant cleaning period or regeneration interval of the contaminated walnut filtrating medium was suggested in the range of 5 to 10 days, and water backwashing cycle...

• 废弃的污染核桃壳滤料；经适当的药剂清洗再生；其过滤性能基本能够得以恢复；使用寿命将大大延长.