Experienced and Skilled
Wilson has extensive experience in the management, installation and construction of remedial facilities. Wilson has successfully provided turn-key services for remediation projects and construction supervision on soil and groundwater remediation projects. These services include:
- Facility design;
- Project management, cost control, and schedule tracking;
- Preparation of bid packages and specifications;
- Construction supervision;
- Equipment procurement;
- Technical support;
- Personnel training; and
- System start-up and debugging.
Experts in the Field
Through extensive experience serving the petrochemical industry, Wilson staff are expert at handling and remediating crude oil sludges, tank bottoms and other impoundment sludges. A typical tank or impoundment cleaning project includes:
- Quantifying of water and sludge in tanks or lagoons;
- Classifying and characterizing impounded water and sludges to determine:
- if treatment is required prior to discharge or disposal and
- which treatment technologies are applicable;
- Determining the project’s remedial objectives (e.g., disposal limitations, clean-up criteria);
- Performing treatability screening analyses on the sludges to select the most economically attractive remediation technology which achieves the project’s remedial objectives; and
- Implementing remedial action programs.
We Tailor it for You
Wilson can review and evaluate any available process data and information on the historical operations of the tanks or impoundments containing the waste sludges. This allows us to tailor an evaluation and remediation program to your specific requirements.
Wilson has the practical experience to determine the appropriate sampling procedures and frequencies required to characterize your sludges in even the world’s most remote locations. Wilson uses practical, proven approaches in preparing:
- Regulatory reviews;
- Health and safety plans;
- Target constituents;
- Field sampling and laboratory analyses plans;
- Sampling and analytical QA/QC procedures;
- Equipment procurement and construction management plans; and
- Operation and maintenance plans.
Establishing Cost-Effective Options
Wilson highly recommends field characterizing waste sludges to focus field investigation activities on providing the data required to establish the most cost-effective remedial option. Proper field characterization eliminates unproductive investigation activities and rules out impractical sludge treatment options.
Field characterization is also key to our strategy of providing remedial design options combining state-of-the-art science with locally available equipment and construction techniques. When operating in remote locations, Wilson understands the logistical, and often technical, constraints associated with on-site characterization of the waste materials’ physical properties. We can either mobilize simple, yet proven, field laboratory equipment required for physical characterization or arrange for shipment of samples to our treatability laboratory.
Economical and Practical
Wilson staff have established testing programs designed to develop the physical and chemical information to ensure that specific remedial options are economical and practical. Our testing programs are designed not only to select the best available technology, but to provide the important operating data required to develop accurate treatment cost estimates. For typical oily sludges, our treatment evaluations can develop operating points and cost estimates for:
- Phase separation using gravimetric; centrifugation and/or diluent extraction processes;
- Filter pressing (to remove water and oil);
- Biological degradation;
- Thermal destruction (incineration);
- Thermal desorption; and
- Landfilling or closure-in-place.
- Diluent extraction and centrifugation of tank sludges to promote:
- contaminant removal,
- product reclamation, and
- residual contaminant minimization.
- Landfarming of centrifugation residuals to remove hydrocarbons and minimize toxicity; and
- Stabilization and closure-in-place of completed landfarm treatment cells to immobilize any accumulated metals or asphaltic components.
Significant Project Savings
Sampling and analytical requirements are tailored to local regulatory requirements and remedial objectives established for each project. Analytical requirements and costs associated with waste characterization for regulatory classification can often be reduced based on process knowledge of the sludge generation process. This can result in significant project savings since analytical procedures often include analysis for:
- Total volatile organic and semi-volatile organic compounds;
- Heavy metals; and
- Polychlorinated Biphenyls (PCBs), pesticides, and herbicides.
Often, Wilson recommends against extensive analytical testing of the untreated sludges. The high viscosity of oily sludges obtained from refinery tanks and impoundments typically raises the procedural detection limits to the point that additional testing will not collect significant quantities of usable information. In our experience, these types of sludges very often exceed regulated levels-additional analytical testing rarely identifies “uncontaminated” areas. Analytical funds might be more effectively used to evaluate treatment residuals to determine the most appropriate final disposal options.