A revolutionary solution for the disposal of filtrates
Problems of filtrate processing
MSW landfill filtrate is the most difficult type of liquid waste to dispose of, as it contains a wide variety of highly concentrated pollutants: heavy metals, toxic substances, and toxins. Filtrate is the drainage of atmospheric precipitation through the body of a landfill, capable of having an acute toxic effect on surface and groundwater, soil, and biological resources.
Some difficulties in the disposal of filtrates:
- The use of multi–stage wastewater treatment, including reverse osmosis plants, makes it possible to achieve a reduction in the concentrations of pollutants in the source runoff, while the processes used generate the formation of a new waste product, reverse osmosis concentrate.
- On the one hand, the lithification technology makes it possible to lower the hazard class of the filtrate, and on the other hand, it serves to increase (by more than 2.5 times) the mass of waste of hazard class IV (lithification), with a limited scope of use (only landfill body filling).
- Both methods involve multi-stage technological stages of filtrate treatment, requiring the involvement of highly qualified personnel, experts from testing laboratories, equipment, and, as a result, significant non-refundable investments.
Engineering tasks
Eco-Spectrum Company, developing its technological potential, has developed an integrated approach to solving the problem of leachate and concentrates utilization formed at all stages of filtrate pretreatment by existing water treatment systems.
- Testing of the heating system and the automatic adjustable supply of heating oil to the process plant;
- A selection of the technological, including temperature, operating conditions of the HURIKAN 200R experimental installation;
- Investigation of the mass and composition of the resulting ash residue;
- Instrumental measurements and studies of volume and the quality of flue gases for the selection of an effective system of gas cleaning equipment.
Product results
According to the results of the experiment, it was found that the process of thermal exposure to waste is accompanied by the release of a significant volume of flue gases with high concentrations of suspended solids, heavy metals, sulfur dioxide, soot with low ash content of the mineral residue.
- An innovative approach to the selection of GO and reagents has been developed, capable of ensuring the quality of emissions within the limits of technological indicators.
- The method of high-temperature thermal decomposition at 750-1250 ° C of acid tar is based on dissociation reactions of sulfuric acid at 400 ° C and above and dissociation of sulfuric anhydride at 1250 °C.
- This method is energy-intensive, while it is characterized by a high degree of decomposition and the possibility of using decomposition products and the released energy.
- Several types of heat exchange devices for heat recovery and waste heat removal have been developed.
- During the tests, energy consumption, fuel consumption, electricity, reagents, etc. readings were taken. Operating modes were determined, the combustion rate was determined, the ash content, ash quality and hazard class were determined, and the cost of thermal waste disposal was calculated.
- Production and testing of thermal recycling complexes of the HURIKAN C series with a GO system.
Successful test results
The test result confirms the possibility of reducing the hazard class from III to IV, reducing the volume, the possibility of obtaining heat (WMP) from the thermal disposal of tar, and data have been obtained that are used to compile a feasibility study with an economic justification and proof of environmental effectiveness.
To fully understand the composition of the emission gases, we hired an independent accredited company to study the feasibility of the gas purification system, its composition, and the required reagents to bring the concentrations of pollutants to the norm in accordance with the requirements of environmental legislation.
Kremlev Denis Sergeevich
SALES DEPARTMENT ENGINEER
d.kremlev@ecospectrum.ru
8-800-555-59-12 (ext. number 121)
Other projects
Disposal of tar
Disposal of filtrate
Disposal of liquid waste from silicon wafer cutting
Disposal of sludge from biological treatment plants
Disposal of construction waste
Waste disposal of thermal power plants, thermal power plants, BOILER houses
Medical waste disposal
Disposal of coke chemical waste
