High-humus landfill leachate treatment process

Abstract

The invention discloses a high-humus landfill leachate treatment process. Leachate is treated by a pretreatment device, a negative pressure-air stripping device, a filtration-adsorption device, a membrane filtration device and a multi-stage biochemical device; in the adsorption treatment, domesticated sludge and sludge carbon are added to adsorb humus substances in the leachate, the adsorbed sludge is dewatered and then carbonized, and the carbide is used for treating the landfill leachate, so that the treatment cost is reduced, and the treatment efficiency is improved.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a process for treating high-humus landfill leachate. Background technique [0002] With the development of my country's economy and the deepening of urbanization, people's quality of life has been continuously improved. According to statistics, my country's urbanization rate has reached 59.58% at the end of 2018, but it is still far lower than developed countries. 1kg, already close to the level of developed countries. Urban waste landfill is the most important way to solve domestic waste in most cities in my country at present. Using potholes to bury urban waste is an environmental protection measure that can not only dispose of waste, but also cover soil for land use. [0003] But an important problem of landfill is the secondary pollution of leachate. The water quality of landfill leachate is complex, with high concentration of ammonia nitrogen, high concentration o...

AI Technical Summary

Problems solved by technology

[0005] Humic matter is the main substance of COD in old landfill leachate. Most of the existing technologies remove it through advanced oxidative degradation and biochemical methods, or filter it out and recycle it by membrane filtration, but the cost of both is very high , it is difficult to use large-scale

Although CN202988928U also sets up biosorption units to adsorb easily degradable substances in incoming water, the purpose of setting up biosorption pools for adsorption treatment in the prior art is only to absorb easily degradable substances, but the degraded humic substances usually still use fen However, there is no system for how to efficiently and low-cost solve the humus in the leachate and effectively improve the economic value of the treatment.

Images