Novel chemical comprehensive wastewater treating agent

The invention relates to a novel chemical comprehensive wastewater treating agent. The novel chemical comprehensive wastewater treating agent is composed of novel water treating agents, calcium hydroxide, aluminum hydroxide, high alumina cement CA50, calcium chloride and water. The chemical formula of the novel water treating agents is CaAl-LDH, and the novel water treating agents are roasting products of double-metallic-oxide layered compounds with the Ca-to-Al proportion of 1-6:1 and double-metallic-hydroxide layered compounds of the double-metallic-oxide layered compounds. The novel chemical comprehensive wastewater treating agent has the advantages that after the novel chemical comprehensive wastewater treating agent is selected, the content of pollution factors is greatly reduced and is much lower than that in the existing national standard; in addition, a method is simple, use is safe, the treating effect is good, solid residues can be further recycled to be used for repairing soil, and the concept of turning waste into wealth is achieved.