Abstract: General industrial solid waste leachate has high heavy metals，and the type and concentration of leachate factors accompanying with different types of solid wastes will change. Generally，heavy metal factors can be removed by adding chemicals，but the types and concentrations of leachate pollution factors will change，which not only greatly increases the difficulty of treatment，but also inhibits the effect of activated sludge on ammonia nitrogen removal. In response to this technical problem，a new treatment process called biological filter tower（modified nanomaterials）is adopted. Taking the solid waste leachate of Ma'anshan Jieyuan Environmental Protection Co.，Ltd. as the object，laboratory tests and on-site pilot tests show that the new treatment process called biological filter tower（modified nanomaterials）can effectively solve the general industrial solid waste（Ⅱ The problem of treatment difficulty caused by the constant changes in the composition and concentration of leachate pollution factors，and at the same time，it can remave ammonia nitrogen in the leachate，and achieve the effect of up-to-standard reuse.

Key words: general industrial solid waste, leachate, pollution factor, biological filter tower, heavy met? al, ammonia nitrogen