Method for harmless treatment of hazardous waste

Abstract

The invention discloses a method for harmless treatment of hazardous waste. The treatment method comprises the following steps of P3, waste drying; P4, solid combustion; P5, flue gas treatment; and P6, residue treatment, specifically, reserving incineration residues, mixing the incineration residues with quick lime according to the ratio of 1:1, and then carrying out landfill treatment. Accordingto the method for harmless treatment of the hazardous waste, the hazardous waste is separated, a part of the hazardous waste is taken out to be subjected to early separation and drying, incineration is conducted after the combustion requirement is met, the remaining hazardous waste can be dried, then excessive fuel is prevented from being added, and the incineration cost is reduced; and meanwhile,solid-liquid gas generated through multiple times of treatment is subjected to closed recovery and then subjected to filtering treatment again, pollutant emission is avoided, the treatment effect iseffectively improved, safety and harmlessness are ensured, and popularization and application are facilitated.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to a method for harmless treatment of hazardous waste. Background technique [0002] In today's daily life and industrial production, a large amount of waste will be generated, and some of them are dangerously polluting and need to be harmlessly treated before they can be discharged. [0003] However, most of the existing hazardous waste treatment methods are directly incinerated, and because the hazardous waste contains a large amount of liquid waste, the combustion rate is poor, and a large amount of fuel needs to be added, which affects the treatment effect, high cost, and burns It will also produce a large amount of harmful gas, and the liquid waste is easy to evaporate and flow out directly, which will affect the treatment effect and safety. A new treatment method needs to be proposed. Contents of the invention [0004] The purpose of the present invention is to solv...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing hazardous waste treatment methods are directly incinerated, and because the hazardous waste contains a large amount of liquid waste, the combustion rate is poor, and a large amount of fuel needs to be added, which affects the treatment effect, high cost, and burns It will also produce a large amount of harmful gas, and the liquid waste is easy to evaporate and flow out directly, which will affect the treatment effect and safety. A new treatment method needs to be proposed