Landfill leachate is a type of wastewater produced during the waste treatment process that contains organic matter, heavy metals, and other pollutants. Full quantification treatment refers to the treatment method that completely converts organic matter, heavy metals and other pollutants in landfill leachate into harmless substances. In February 2022, the Ministry of Ecology and Environment (MEE) solicited public comments on the second revision of the Pollution Control Standard for Domestic Waste Landfills, GB16889. Number 9 of these3.Article 2 stipulates that "the concentrate produced by the treatment of leachate shall be disposed of separately and shall not be refilled into domestic waste landfills or enter centralized sewage treatment facilities".
So why is the advanced oxidation process recommended for the full quantification of landfill leachate?The advanced oxidation process is a method to achieve the full quantification of landfill leachate through oxidants (such as ozone, etc.) and catalysts (such as ozone catalysts, etc.). Here's why an advanced oxidation process is recommended:
1.Efficient degradation of organic matter: The advanced oxidation process of ozone oxidation can efficiently degrade the organic matter in landfill leachate and convert it into carbon dioxide, water and non-toxic and harmless substances, so as to achieve the purpose of wastewater treatment.
2.Removal of heavy metals: The ozone-catalyzed advanced oxidation process can achieve the removal of heavy metals by converting heavy metal ions in landfill leachate into hydroxides or oxides that are insoluble in water through an oxidation reaction.
3.Broad-spectrum: The ozone-catalyzed advanced oxidation process has a good degradation effect on different types of organic matter and pollutants, and can treat a variety of pollutants in wastewater, which has high applicability.
4.Simple operation: Compared with some other wastewater treatment methods, the ozone catalytic advanced oxidation process is relatively simple to operate, does not require complex equipment and processes, and reduces treatment costs and operation and maintenance costs.
5.Environmental protection: The ozone catalytic advanced oxidation process will not produce secondary pollution, harmful substances or a large amount of solid waste in the treatment process, which meets the requirements of environmental protection.
In summary, the ozone-catalyzed advanced oxidation process is a method suitable for the full quantification treatment of landfill leachate, which has the advantages of efficient degradation of organic matter, removal of heavy metals, broad spectrum, simple operation and environmental protection.
The soul of the ozone-catalyzed advanced oxidation process is the SAO3 ozone catalyst. SAO3 ozone catalyst is built using a large number of high-efficiency active metal oxides and metal elements as the base material. Under the action of high temperature, the new three-dimensional architecture technology gives rise to more micropores, which are evenly distributed, thereby increasing the specific surface area and active surface of the catalyst. In this way, the catalyst maximizes ozone oxidation efficiency.
The SAO3 ozone catalyst successfully combines the strong oxidizing properties of ozone with the catalytic properties of the catalyst. Such a unique combination makes the catalyst more effective in solving the thorny problems of low ozone treatment efficiency, low ozone utilization rate, high operating costs, and incomplete degradation of organic matter. This means that with the SAO3 ozone catalyst, we are more likely to achieve the goal of full quantification of landfill leachate.
Landfill leachate treatment