This application relates to the technical field of
hazardous waste treatment, specifically to a method for treating
acephate waste liquid. The method includes: pretreatment,
hydrolysis reaction, oxidation reaction,
filtration, and
wastewater treatment. The
hydrolysis reaction involves adding a composite alkali agent to the pretreated waste liquid to conduct a
hydrolysis reaction, obtaining hydrolyzed waste liquid. The composite alkali agent includes 1-1.5 wt.% modified
magnesium oxide and 4-8 wt.%
calcium hydroxide; the amount of composite alkali agent added is 3-5 times the weight of the pretreated waste liquid. The oxidation reaction involves adding
calcium hypochlorite to the hydrolyzed waste liquid to conduct an oxidation reaction, obtaining oxidized material; the
molar ratio of
calcium hypochlorite to residual
hydrogen sulfide in the hydrolyzed waste liquid is (1.2-1.5):1. Compared to traditional direct
incineration methods, the treatment method of this application can solve problems such as
incineration corrosion,
flue blockage, and high
treatment costs, and also has the characteristics of energy saving and high efficiency.