Wastewater treating agent, preparation method and wastewater treatment method

The invention relates to a wastewater treating agent, a preparation method and a wastewater treatment method. According to the oil paint wastewater treating agent, the formula comprising a corrosion inhibitor, a scale inhibitor, a sterilizing agent and a flocculating agent is adjusted, and an auxiliary chemical is added, so that the wastewater treatment process is easy to control, the treatment period is short, and the treatment effect is remarkably improved; the wastewater treating agent comprises the corrosion inhibitor, the scale inhibitor, the sterilizing agent, the flocculating agent and the auxiliary chemical; the corrosion inhibitor comprises sodium polyphosphate, calcium gluconate, alkyl epoxy sodium carboxylate, potassium iodide and gelatin; the scale inhibitor comprises trisodium phosphate, tannin, sodium humate, sulfoacid copolymers and TH-0100 type reverse osmosis scale inhibitors; the sterilizing agent comprises potassium permanganate, didodecyl dimethyl dibenzyltinoammonium chloride and nano-zinc oxide; the flocculating agent comprises lignin, chitosan, quaternary amine type cationic starch, polyaluminum chloride , polymeric ferric sulfate and diatomite earth; the auxiliary chemical comprises polyaspartic acid and alky epoxy carboxylate. An experiment result proves that the wastewater treating agent has an excellent effect.