Microbiological culture enabling biological treatment of leachate and affect of aeration process

Taxonomy

• Biological Treatment
• Biological Treatment
• Biology
• Agrochemicals
• Biotechnology
• Biological Engineering
• Landfill Leachate
• Lagoon

4 Answers

1. The toxic substances in leachate can be reduced using aeration lagoonswith as an accelerator additive to enhance the chemical treatment process using Alum coagulant and the accelerator substance Perlite and Bentonite. The performance of the chemical treatment can be  enhanced using the accelerator substances with defined quantity Alum as a constant dose. Perlite gave better performance than the Bentonite effluent. The treated leachate can be used for landfill.It can be treated by different physico-chemical and biological methods and their combinations. The composition and characteristics of landfill leachate are presented from the aspect of bio treatability.

   The treatment with activated sludge, mainly consisting of bacterial cultures under aerobic and anaerobic conditions in various reactor systems included.

2. Any biological process is introduction of an invasive species in the ecosystem, that wouldn't be a sustainable approach. Leachate can be treated sustainably ONLY through restoration of natural ecology of the wetland. study - www.cownomics.in for more on the Ecological Rejuvenation technology. 

3. The leachate will have numerous substances depending on the source of the leachate, municipal landfill or industrial landfill. Each of these will have BOD/COD/NH3/VOCs/TSS and concentration data. An oxygen demand profile can be developed on the total oxygen needed and also if there are O2 scavengers. The health of the biofloc in the leachate pond/lagoon will be critical to determine if they can remain viable. Inasmuch as most lagoons systems are pass through (hydraulic retention time) systems, floc will need to be conserved our recycled or supplemented. What microorganisms stay viable in the lagoon will be those that can tolerate the concentration of the toxic components entering the lagoon. If these can be stripped off before entering the healthier the lagoon system for treating leachate. This is why bench scale testing first is important to determine which CFUs can survive and provide the basis for innoculation of the leachate lagoon with these cultures. If the leachate does not have a good F/M ratio then nutrients might need to be added to keep the CFUs viable and productive in the reductions. The best leachate lagoons are fucultative or dual zone, aerobic zone in the epilimnion and anoxic zone into hypolimnion this will allow different floc to develop in each zone. A good initial reference is "lagoonsonline" that can take you step by step into designing a good leachate treatment system.

   1 Comment

   1. Good answer!

4. Aqua-Aerobic Systems does this routinely but the answer depends on the specific leachates.  Please feel free to contact us with specifics.