Vehicle-mounted mobile landfill leachate emergency treatment method and system

Abstract

The invention discloses a vehicle-mounted mobile landfill leachate emergency treatment method which comprises the following steps: arranging a mobile vehicle-mounted landfill leachate emergency treatment system, and firstly carrying out nanofiltration treatment on leachate; subjecting the nanofiltration effluent to nitrosation anaerobic ammonia oxidation treatment, subjecting the nanofiltration concentrated solution to polyferric coagulation treatment, and mixing supernatant and the nitrosation anaerobic ammonia oxidation treatment effluent for subsequent advanced treatment; treating in a denitrification aeration biological filter chamber and then carrying out denitrification treatment; and introducing the wastewater into an ozone aeration biological filter chamber to decompose, destroy and carbonize refractory organic matters, further removing residual organic matters and ammonia nitrogen in the wastewater, and finally discharging the effluent after reaching the standard. The invention further discloses a system for implementing the method. The system is an integrated system in which all the components are arranged in a container, so that vehicle-mounted movement and operation are facilitated. No concentrated solution is discharged, no external carbon source is needed, the aeration rate is reduced, the sludge yield is low, and the method is suitable for emergency treatment.

Description

technical field [0001] The invention relates to the technical field of water pollution treatment for environmental protection. Specifically, the invention relates to a vehicle-mounted mobile landfill leachate emergency treatment method and system. Background technique [0002] Landfill leachate is a typical high-concentration wastewater containing high ammonia nitrogen and refractory organic matter, which is extremely difficult to treat. The key to its treatment standard is how to effectively remove ammonia nitrogen, total nitrogen and refractory organic matter. Domestic conventional landfill leachate treatment generally adopts the "biochemical method + membrane method" process. The biochemical method uses complete nitrification and denitrification to remove ammonia nitrogen and total nitrogen in the leachate, while the biochemical effluent is further treated by nanofiltration + reverse osmosis membrane technology. The complete nitrification of high-concentration ammonia-...

AI Technical Summary

Problems solved by technology

[0003] The membrane process only concentrates and separates the pollutants, and the high-salt concentrated liquid discharged from it is refilled into the landfill. The same is true for the evaporation method and the membrane method, and the concentrated liquid also needs to be recharged. After long-term operation, the leachate salt The degree of increase makes the entire leachate treatment system unable to operate normally, and the landfill leachate gradually accumulates

The current waste emergency treatment engineering vehicles all adopt high-pressure reverse osmosis method, but the continuous recharge of the concentrated liquid water leads to the continuous increase of the salt concentration, and there is almost no way to further treat the leachate

[0004] When the separation of rain and sewage is not complete, heavy rain will cause a sudden increase in leachate production, and the original treatment plant has limited processing capacity, so it is also necessary to increase emergency treatment equipment to deal with excess leachate

With the improvement of domestic leachate discharge standards and the intensification of supervision by environmental protection departments, the frequent occurrence of these problems has intensified the pressure on pollutant control and emission reduction of most landfill leachate treatment plants in China, and complete nitrification and denitrification Traditional processes such as combined ultrafiltration-reverse osmosis treatment are difficult to meet the treatment target requirements

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