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Feasibility Studies


ECI has conducted numerous feasibility studies for private and government clients. These include feasibility studies for air, water, and soil.

ECI provided the technical expertise for the Hangzhou Regional Hazardous Waste Management Project Feasibility Study. ECI reviewed the pilot scale rotary kiln hazardous waste incineration system that was designed by a joint German and Chinese engineering team. ECI made numerous recommendations and redesigned the entire rotary kiln incineration system including the feed system, rotary kiln, secondary combustion and conditioning chambers, incorporated a spray dryer absorber and baghouse to eliminate the steam plume, and increased the size of the induced draft fan to eliminate positive pressure/draft problems. The improved design and operations for the large-scale system was based on findings from the pilot scale system that ECI reviewed and evaluated and the extensive expertise of ECI personnel. ECI designed a medical waste incinerator complete with feed system, airlocks, primary and secondary combustions chambers, air pollution control system, and ash handling system, and PLC controls system. ECI provided a design and estimated costs for a plasma torch unit for destruction of PCBs. ECI incorporated the current wastewater treatment equipment located at the facility in a design that will provide treatment for numerous waste streams: cyanide, hydrogen fluoride, acids, hexavalent chromium, aqueous organics, inorganics/metals, etc. The wastewater treatment design allowed for the expansion of the facility in the future, if needed. ECI developed process flows for recycling/reusing white goods (i.e., refrigerators, washers, dryers, ranges/stoves, dishwashers, air conditioners, and microwaves), electronics (i.e., monitors, CPUs, televisions, printers, faxes, scanners, copiers, typewriters mainframes, keyboards, etc.), chlorofluorocarbons, and fluorescent lights. The feasibility study report included over 120 pages of original text, 26 original process flow diagrams, and 6 original engineering drawings.

ECI personnel managed for the NYSDEC the feasibility study and remedial design of a landfill for the solvent-contaminated Sweden-3 Chapman Properties site.  ECI personnel developed the remediation work plan, which included use of a groundwater interceptor trench, groundwater pump-and-treat system, low-temperature thermal desorption (LTTD) soil treatment system, and landfill cap. At NYSDEC’s request, ECI personnel managed the technical evaluation concerning the feasibility of applying metal-enhanced reductive dehalogenation (MERD) as an alternative to the interceptor trench and pump-and-treat system.  Upon NYSDEC’s approval of the remedial design, ECI personnel managed the preparation of engineering plans and specifications for the LTTD system and auxiliary equipment and identified pretreatment, site development, and building and process operations required.

ECI personnel evaluated the Idaho National Engineering and Environmental Laboratory’s (INEEL’s) feasibility study and remedial efforts for Operable Unit 7‑08 (Organic Contamination in the Vadose Zone [OCVZ]) at the Radioactive Waste Management Complex, in order to identify design and operation and maintenance (O&M) issues regarding the vapor vacuum extraction and treatment (VVET) system that could affect DOE compliance with the site Record of Decision (ROD). ECI personnel initial comments concerning an evaluation of the preferred alternative specified in the ROD led DOE to use a regenerative thermal destruction unit rather than the catalytic oxidation unit specified in the ROD.  In subsequent comments, potential situations where identified such as hydrogen chloride emissions would exceed permissible levels; DOE/EPA addressed these factors in the final implementation strategy.  In addition, ECI personnel reviewed the remediation contractor’s preliminary design and specifications for the VVET system, identifying numerous potential problems, including seasonal operational difficulties that would have prevented year-round unit operation (subsequent installation/operation of the units verified these findings).  ECI personnel also completed a regulatory compliance review concerning the applicability of 40 CFR 264 Subpart AA that was incorporated into the DOE implementation strategy.  Comments on the OCVZ remedial design/remedial action work plan addressed over 110 deficiencies, including design and operating parameters.

ECI completed a Chromium Encapsulation Project in the People’s Republic of China- Project No. 2002-30084A for the U.S. Trade and Development Agency.  ECI reviewed the technical, economical, financial, regulatory, and political aspects of applying a United States based chromium encapsulation technology/reagent to over 20 sites throughout China.  The chromium encapsulation reagent was proposed to neutralize large (i.e., 250,000 cubic meters in size) “mountains” of chromium contaminated by-product waste.  The treated by-product waste would prevent rainwater run-off and both surface and ground water chromium contamination.  ECI received praise and the highest marks on the Evaluation of Advisory and Assistance Procurement form filed by the U.S. Trade and Development Agency for the work performed on this project.  In addition, the U.S. Trade and Development Agency wrote: “The report took a very difficult subject and provided a clear recommendation to TDA based on the information provided.

ECI provided an extensive Best Available Control Technology (BACT) analysis report (feasibility study) for the ammonia stills (the wastewater treatment system that strips ammonia from the wastewater discharged to the local municipal wastewater treatment facility) at a metallurgical coke production facility. The extensive research and engineering costs data that went into the BACT analysis identified a number of potential alternatives to the ammonia stills current operations that emit ammonia to the atmosphere.  The BACT analysis examined the potential to produce ammonium sulfate either in finished form (i.e., dry and bagged) or as an intermediate product (i.e., a water solution of 40 plus percent crystals); ammonium hydroxide; and treat the off-gas by catalytic or thermal incineration. The extensive analysis reviewed the potential market for byproducts [i.e., ammonium sulfate either in finished form (i.e., dry and bagged) or as an intermediate product (i.e., a water solution of 40 plus percent crystals); and ammonium hydroxide]. All potential applications went through an engineering design and cost analysis to determine the cost per ton of emissions reduction. The New York State Department of Environmental Conservation readily accepted the BACT analysis.

In addition, ECI provided a feasibility study for the design and estimated cost to install a large wastewater treatment plant for one of the metallurgical coke production facilities. This included use of the river water and its discharge after its use back into the river. ECI also provided a feasibility study, comments and compliance strategy on NOx emissions from combusting coke-gas in the facility’s boilers. After the EPA published new wastewater pre-treatment regulations ECI developed and submitted the first Fundamentally Different Factors (FDF) variance application to EPA Region 2 in over 20 years. Subsequently ECI has prepared additional information requested by the EPA including but not limited to a complete preliminary design of a sophisticated wastewater treatment facility with diversion of storm water, dissolved air floatation, metals removal, and biological system. ECI prepared system sizing and engineering costs as well as schematics of the system.

For a chemical oxidants production facility, ECI developed a feasibility study that evaluated the regulatory impacts of four boiler house options during the implementation of two plant expansion scenarios. The regulatory review included numerous federal and state regulations and the reduction of SO2 and Particulate emissions. The report included the development of the facility baseline emissions and estimated emissions for the two plant expansion scenarios. The facility emissions estimates were compared to regulatory standards and trigger levels to determine applicability and costs associated with regulatory compliance. The results of the 30-page review provided management with significant information from which to direct the plant expansions and boiler house up-grade. ECI provided an up-date to the above document and included three new options to supply facility steam and deionized water for process use. This report document evaluated the impacts of a third-party owner/operator of a new boiler-house and the potential to separate air permits (i.e., one air permit for the processing facility and another for the boiler-house operations). In 2006 ECI modified the facility’s State air permit; this included the decommissioning of three (3) No. 6 fuel oil water tube boilers and the construction and operation of two (2) 800 HP duel fired fire tube boilers (i.e., No. 2 fuel oil and natural gas).

ECI provides regulatory and technical support for performance contracts, energy audits, self-generation/peak shaving studies, and other energy reduction/conversion related projects and specializes in environmental compliance related to combustion by-products. Specifically, ECI’s air emissions compliance services are recommended by many equipment manufacturers and representatives for thermal treatment systems, boilers, stationary internal combustion engines or turbines that drive electrical generators, and fossil fuel and bio-mass combustion systems related to federal and state regulations. ECI supports many of the performance contracts (i.e., guaranteed energy savings contracts) provided by Siemens.  In providing this support, ECI has performed environmental evaluations and compliance activities for New York State facilities related to fuel switching, self-generation, and energy reduction projects.  In addition, ECI has performed energy and environmental evaluations to support Pennsylvania’s Department of Environmental Protection “Pollution Prevention/Energy Efficiency Site Assessment Grant Program”.

 

 

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