Please check the PDF attachment.

 To me, it seems like that you are looking for ways to first collect and transfer leachate from Hazardous waste. Help me understand here, considering hazardous waste is already identified to be disposed in a specific manner - as per legal norms - that might include secured lining, proper sanitation, and continuous monitoring, leachate generation cannot be considered after the fact, but has to considered with the preparation of disposal ground. So, are you looking for how leachate generated in secured landfilling can be collected? Which type of hazardous waste are we talking about, so as to let me help you.      

I suppose that quality of leachate depends upon many factors and it is changing substantially from facility to facility. It is the reason why there is not only one best option for treatment. The treatment technique should be derived from leachate quality at first.

Best regards

Vit

Dear Somnath Debnath,

I am looking for the Options for Leachate Treatment. This is a part of my research work and i need to prepare a comparitive study among the processes

OK Ayushi Sharma:

there are some hints:

There exists many treatment options for leachate treatment. I shall mention only some of them. Perequisite for every treatment systém is leachate collection and draining to th treatment point. 

i)    Evaporation in leachate pond: The leachate pond is expected to evaporate the moisture during its one year cycle and the resulting sludge after evaporation will be returned to the landfill. The solar evaporation pond has pre-treatment like neutralisation and coagulation of leachate at an initial stage, using lime and allowing the water component to be evaporated naturally using the solar radiation. Stormwater and rainwater are collected separately from leachate and they are not drained to leachate pond. 

ii) Biological treatment + reverse osmosis

      Biological treatment can be anaerobic one, aerobic one or both in a sequence

 iii)  Multi-Effect Evaporator and spray drier           

iv)  Electrochemical oxidation

Electrochemical oxidation can significantly reduce concentrations of organic contaminants, ammonia, and color in leachate

 v)   Recirculation of leachate to the landfill cell

 vi)  Electrocoagulation + flotation + reverse osmosis

vii) Chemical oxidation (Fenton´s oxidation)

 Regards  Vit

Dear AS. You need to do an analysis of physical.chemical. and biological contents of the leachate. When you find it has all hzrds.toxic.sbstncs. then you hv to be more careful.At best if it is more organic in nature then can be incinerated.. and get energy frm C and H..if otherwise cake it to make bricks for lining furnaces.. no harm is carried forward. w wshs.. 

Dear AS, sorry for being a little cryptic earlier. Tried to go through details on leachate treatment, which is less prevalent for hazardous waste as compared to normal waste, as I believed you are concentrating on leachate generated by hazardous waste and not hazardous leachate generated by common waste. Here is a publication for leachate treatment of hazardous waste only. This could be your start point to build comparative arguments of one versus another. Hope this helps!   

The best way is to go for biogas production....

Dear Sharma,

The  properties of your leachate would inform the type of treatment that you could opt for.  Advanced oxidation processes (Fenton oxidation, photocatalysis, electro-oxidation, etc) could be excellent options for hazardous leachate. Again, the objective of the treatment needs to be defined. 

You must know firstly the physical-chemical characteristics or at least the type of input raw materials and the processes which you didn't define, before talking about type of treatment.