This Portable Soil Remediation System (Fluidized Bed) with Vapor Recovery Unit includes one calcine chamber (fluidized bed incinerator), nine burners, one Flex-Kleen Model 36-WXTC-140XL baghouse and a complete vapor recovery unit with oil/water separator. This unit is a fully mobile thermal desorption system that fits onto three flatbed trucks, making it ideal for urban projects. It is excellent for treating soil with high levels of hydrocarbons, sludge, drilling muds and many other materials. Treating contaminated soil through remediation techniques, rather than landfilling it, protects human health and the environment and recycles the soil for future use. This soil remediation system comes fully equipped with controls and is in good condition.
The calcine chamber acts as a gravity heating chamber that indirectly heats the soil through a tube and shell system, combined with a fluidizing bed. Fluidized bed incinerators work well for soil remediation, because they are used for waste that has a low density and is homogenic. The soil is fed into the heating chamber from the top and gravitates to the air sealed discharge unit. Five of the nine burners are positioned in the lower part of the chamber, and the other four in the upper, heating the chamber and injecting gas and air from above and below. This gives every soil particle two forces- the gravitational force pulling it down and the pneumatic force pushing it up. The fluidized bed stage of incineration is reached when the two forces are equal and the soil particles are suspended in the chamber.
The nine burners provide 4.6 MMbtu/hr, plus one Eclipse Ratiomatic Model 100 RM burner is included that is rated at 1 MMBtu/hr. They reach a temperature of 1200 F. In the soil remediation process, burners are used to heat the chamber to a high enough temperature to vaporize the contaminants, but not so high that it incinerates the soil. A burner can also accompany an oxidizer to heat it to a temperature high enough to break down the chemical compound of the gas and burn out all of the pollutants in order to ensure that only safe air is admitted into the atmosphere. The burner heats the oxidizer to a high enough temperature to incinerate the pollutants in the oxidizing chamber.
The system contains one Flex-Kleen Model 36-WXTC-140XL baghouse with a volume of 2600 acfm, a cloth area of 602 sq. ft. and a ratio of 4.32/1, which acts as an air pollution control device. The vaporized gasses are pulled through the baghouse with 400 filtration bags and a self-cleaning system that removes all particles still remaining in the gasses. The gasses are then cooled and condensed at 200 F and the fluids are separated from the gasses. The remaining gasses are used as fuel and the fluid is sent to an oil water separation tank.
Oil/ water separators are used to reduce the amount of effluent water contaminated with oil or other petroleum products being released into the environment and to purify water for reuse. These tanks filter free non-emulsified oil, hydrocarbons, diesel, gasoline, fuels, from water by exploiting the differences in specific gravity between the fluids by providing adequate retention time for the less dense oil to rise to the surface of the water.
The result of this process is newly-cleaned soil that can be recycled back into the environment and reused. With technology constantly advancing, new methods of soil reclamation are continuously being developed. This will make purifying land to be used for growing food, creating wildlife preserves and human dwellings a possibility, all the while cleaning the air and water through removing contaminants, making the world a healthier and safer place for all living beings. Not only is soil remediation environmentally significant, it is also a lucrative industry. After alternating years of growth and decline in 2010 and 2011, the remediation and environmental cleanup services industry is predicted to be on the upswing in 2012 and beyond. According to an IBIS World market research report, this industry growth is supported by demand from construction companies that will require these services for their projects. Although government spending in this area is set to decline, private sector spending is increasing and is now a main source of funding, making the soil remediation industry more profitable than ever.