An ozone contact oxidation device for deep and efficient treatment of landfill leachate

Abstract

The invention relates to an ozone contact oxidation device for deep and efficient treatment of landfill leachate. The ozone contact oxidation device comprises a water inlet pipeline of the landfill leachate treated by secondary biological treatment, an H2O2 adding device, a gas-liquid mixing pump, a recycling ozone contact oxidation reaction chamber, a reaction chamber, at least three contact oxidation reaction chambers, at least one activated carbon adsorption chamber and a water outlet used for discharging the landfill leachate treated by ozone oxidation treatment. The ozone contact oxidation device remarkably improves the biodegradability of the effluent of the landfill leachate treated by secondary biological treatment; by means of the addition of granular active carbon, the ozone content of liquid phase of the landfill leachate at the water outlet is very low, and a subsequent biological treatment device can be directly filled with the landfill leachate at the water outlet; furthermore, the utilization rate of ozone is more greatly improved by adjusting the ozone filling proportion of all the contact oxidation reaction chambers through an ozone recycling pipeline, so that the operating cost of the deep treatment of the landfill leachate is lowered.

Description

technical field

[0001] The invention relates to a deep and high-efficiency treatment device for landfill leachate, in particular to an ozone contact oxidation device capable of efficiently utilizing ozone and efficiently removing residual ozone in the liquid phase of landfill leachate effluent. It belongs to the field of sewage treatment. Background technique

[0002] With the rapid growth of China's economy in recent decades, people's living standards have been generally improved, and at the same time, my country's industrial level has also been greatly improved. The output of domestic waste and industrial waste in my country has shown explosive growth. The sanitary landfill of garbage has been widely used due to its low economic cost, but this treatment method will produce a large amount of harmful landfill leachate, which is mainly treated by biological treatment technology in my country at present. Because landfill leachate contains a large amount of refractory macromo...

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