The use of H2O2 to chemically oxidize the contaminants into mineralized products (CO2 , salts, and readily biodegradable organic fragments) offers a number of advantages over these current treatment methods.
Benefits of Soil Decontamination by Chemical Oxidation:
The reagent used (H2O2) is inexpensive, readily available, and has as its reaction products water and oxygen;
The chemistry of the process (Fenton's Reagent) has been known for over 50 years and its applicability to a wide variety of contaminants is well documented;
The process is easily applied and controlled;
The treatment occurs rapidly, lasting from a few hours to a few weeks;
The process produces no by-product wastestreams, and can be tuned for the degree of contaminant removal desired. This allows it to be used synergistically with other technologies such as biotreatment or soil washing.
The UviLux BOD Indicator enables in-situ, real-time, reporting of BOD within both natural water systems and water processing plants. The monitor detects fluorescent proteins that are inherent within sewage and slurry and provides an output in BOD equivalent units. The principle behind the measurement is the excitation of Tryptophan-like fluorescence within UV wavelength band, which has been shown to correlate with both BOD and bacterial contamination. With complete flexibility of deployment methodology, the UviLux BOD Indicator can be applied to both water supply and water recovery processing plants.
For water supply processing, the UviLux BOD Indicator can be applied at the front end to the water intake to provide alarm of any contaminated water entering the plant. Applications within Waste Water Treatment Works can include monitoring of effluent levels at the final outflow point (into rivers and coastal areas) as well as the primary, secondary & tertiary stages, the data potentially feeding into energy saving systems to optimise process performances. The CTG UviLux BOD Indicator in-situ fluorometer can also be used within pipe and channel networks to test for incidences of black water and grey water cross-over.
For most oil sand recovery is accomplished with in-situ thermal processes like Steam Assisted Gravity Drainage (SAGD) and Cyclic Steam Stimulation (CSS), where steam and chemicals are injected to the liquefy the bitumen. The treatment and recycling of the produced water used in this process has a direct impact on the cost of oil production. Aquatech provides water treatment technologies that includes the recycling of the produced water used the process which has a direct impact on their the cost of oil production.
Today bioremediation is successfully used as soil– and groundwater remediation technology. Many bioremediation systems, both in-situ as ex-situ techniques, usually result in considerable cost savings. Since the beginning of the 1980’s both in-situ and ex-situ bioremediation projects have been successfully completed worldwide through the use of preselected and adapted bacteria. QM Environmental Services supplies a range of microbial, bioactivator and nutrient products and gas delivery systems for the use in both aerobic and anaerobic bioremediation programs. Most common contaminants ranging from aliphatic hydrocarbons such as petroleum, lubrication oils, aromatic compounds like benzene and toluene to chlorinated solvents can be treated with these products.
Detection of hydrocarbons within both water sources and effluent intake to Waste Water Treatment Works is an increasing requirement. The UviLux Hydrocarbon fluorometer detects hydrocarbons in water at very low concentrations. This in-situ fluorometer provides a rugged sensor which can be deployed in a wide variety of configurations. The UviLux is part of the Lux range of CTG fluorometers, and can be provided with a number of options with regard to signal protocols, and has available accessories to enable in-flow monitoring as well as inclusion within portable systems for taking measurements in the field.