Facility
Overview
Clean Earth of New Castle, Inc. operates a thermal treatment facility located in New Castle, DE situated on 7.5 acres. The facility layout consists of contaminated-material storage buildings for 20,000 tons, a high temperature thermal processing unit, temporary storage for treated material, an on-site laboratory, and office space. The processing plant, which is permitted to operate 24 hours a day, seven days a week, is comprised of a rotary dryer for desorption of contaminates from the soil, a thermal oxidizer for hydrocarbon destruction, and a cyclone and two bag houses to remove dust from the gas stream. The plant can reach treatment temperatures of up to 1100°F and 60 tons per hour and can handle a wide variety of volatile and semi-volatile contaminates ranging from gasoline and alcohols to waste oils and coal tar residuals. CENC incorporates a high temperature plant configuration that has a counter current process flow through the dryer, cyclone, bag houses, heat exchanger, oxidizer thus ensuring our clients a safe and effective treatment solution. The on-site laboratory provides the necessary analysis to ensure compliance and quality control for incoming waste streams and post treatment effectiveness. The on-site analysis can be compared with the certified pre-approval analysis providing the facility with direct control over waste acceptance, reducing the potential for unauthorized waste streams.
Treatment
Technology Platform
Thermal Treatment: The primary waste treatment component is a rotary dryer measuring 10 feet in diameter by 50 feet long and is constructed of core-10 steel lined with refractory. Waste enters the rotatary dryer and is heated to elevated temperatures causing the evaporation of water and the volatilizing of the organic contaminates. The gas stream with fines enters the cyclone and primary bag house where the particulate is separated from the gas stream. After a retention time in the dryer, the treated media enters a soil conditioner (primary auger) where the fines from the bag houses are re-entrained. Treated soils then discharge into the secondary auger where water and/or residual wastes such as sludges, and other wastes beneficially reused as soil additives are mixed to cool and re-hydrate the material. The secondary bag house controls any dust from the discharge. The cooled, moist soil is stockpiled, sampled, and tested by an independent certified laboratory ensuring effective treatment and fulfillment of reuse standards.
The gas stream from the primary bag house contains the hydrocarbons removed from the contaminated soil. The gas stream exits the bag house moving through the primary fan that moves 30,000 acfm keeping the desorption system under negative pressure. After the fan the gas stream is under positive pressure and is forced through the heat exchanger to increase temperature for maximum efficiency in the oxidizer. The gas stream then is burned in a gas-fired oxidizer at 1500ºF to assure destruction. Fines from the secondary bag house are added to the secondary auger and the separated gases are discharge to the stack gas. The gas stream discharged into the atmosphere. Adequate CEM instrumentation and programmable logic controls allow for safe operation of the thermal processing system. Automatic safety controls, temperature gauges, and recording devices allow the plant to operate only within strict parameter ranges while a computerized operating system controls the monitoring and retention of data and analysis of plant performance for compliance reporting.
Contact
Info
94 Pyles Lane
New Castle, DE 19720
T 302-427-6633
F 302-427-6634
