There are several new technologies in the field of landfill leachata treatment. The BAS process can be used to treat leachate from a variety of waste streams. The BAS has many advantages, including the ability to significantly reduce the amount of leachate produced, as well as its resilience to shock loads. The BAS process has several applications, including powdered activated carbon treatment and sequencing batch reactors. Because landfill-leachate has a similar chemical makeup to municipal wastewater, many of these technologies can be successfully borrowed. In addition, the Membrane Bio-Reactor is another innovation that can be utilized for treating landfill-leachate.
Reverse osmosis is a common method for treating leachate, as it is capable of eliminating trace amounts of volatile organic compounds. Polishing is also an option for removing ammonia and trace levels of volatile organic compounds. Digestion wastewaters are a byproduct of anaerobic digesters and must be treated before disposal. There are several options for treating these leachate streams, from minor interventions to major ones.
The flocculation process removes large amounts of non-settleable colloidal solids. This method can be applied upstream or downstream to biological treatment. The most common coagulants are chlorine and aluminum sulfate. This treatment method is suitable for leachate that has a low pH. The wastewater treated by this method is highly concentrated and has a high COD level.
Reverse osmosis is another type of filtration process that is becoming widely used in the industry. This process utilizes inverse pressure across a semi-permeable membrane. This technique is frequently used in drinking water plants and water desalination. Reverse osmosis is an effective way to treat landfill leachate. Reverse osmosis does not require the use of confined spaces or pressure vessels.
The biochemical methods of landfill leachate treatment are the most widely used methods. The biochemical processes remove the majority of biodegradable organic compounds and ammoniacal nitrogen. But TN and refractory organic compounds are still present in landfill leachate. The physicochemical methods include double membranes, reverse osmosis, and aqueous electrolysis.
The MBR process is a more recent development in the field of landfill leachate treatment. In contrast to traditional filtration, this process is a physical method of separating contaminants from wastewater. The membrane pores are generally divided into three categories: micro-filtration, nano-filtration, and ultra-filtration. Reverse osmosis is a similar technology, but it works on a much smaller scale.
There are various types of new technologies used in the field of landfill leachate treatment. The effectiveness of conventional treatment methods varies widely depending on the types of contaminants in the leachate. The advanced oxidation treatment technique is an excellent solution for removing organic contaminants. The ANAMMOX system is also effective in reducing inorganic contaminants. However, this process is still in its early stages.