Hazardous waste incineration wastewater treatment method

The invention discloses a hazardous waste incineration wastewater treatment method, which comprises the steps of sand filtration, pretreatment, nanofiltration, phosphorus removal, filter pressing, electro-catalysis, activated carbon filtration and the like. Compared with a sewage treatment method adopting three steps of activated carbon adsorption, electro-catalysis and phosphorus removal, the treatment method comprises the following steps: firstly, removing large-particle insoluble substances in wastewater through sand filtration; effectivley removing phosphorus in the wastewater through nanofiltration, a phosphorus removal agent and filter pressing; then, effectively reducing the ammonia nitrogen content and COD in the wastewater through pretreatment and electro-catalysis; and finally, effectively removing residual chlorine in the wastewater through activated carbon and a KDF filter material. The ammonia nitrogen content in the treated wastewater is less than 15 mg/L, the total phosphorus content is less th