Site remediation technologies database

Introduction to REMTEC
REMTEC Requirements
REMTEC Detailed Description

Introduction to REMTEC

The REMTEC database is a comprehensive collection of technologies for the treatment of sediment, soil, groundwater and off-gas. It is a valuable source of information for consultants, researchers, parts and services suppliers, government officials and environmental groups. The primary objective of the database is to provide a directory of innovative site remediation. The database contains over 500 technologies, from bench scale to commercial. This user-friendly relational database program for Windows provides powerful search options and a unique problem-solving approach. REMTEC can also print the technology information in a variety of useful report formats.

The software provides the following search options:

Immediate feedback on the data filtering is provided by displaying the number of matching records as each selection is made.

REMTEC contains:

Purchase of REMTEC entitles you to one year of free data updates via the Internet or FTP. There will be an optional minimal annual update fee after the first year.

REMTEC Requirements: 486/Pentium with 8 MB RAM running Windows 3.1/95.



REMTEC Search Options


One of the useful and unique features of REMTEC is the search status box. This information box provides constant and immediate feedback after any search criteria is specified. Every time you make a choice that further refines your search, REMTEC will immediately update the search status box. You are able to see precisely which conditions are limiting your search.

REMTEC Problem Solver
The Problem Solver is an expert system front end to the database. The program will ask you questions about the contaminants and media of concern in order to find appropriate technologies. The problem solver is the easiest way to search for particular technologies. After answering each question in turn, the next set of choices will appear.

Select General Media Type
 A technology field is selected. Solid, Liquid, Off-Gas, or All.

What contaminants are to be treated?
You are presented with a list of contaminants depending on the technology type previously selected (Solid, Liquid or Off-Gas). Clicking on the checkbox will specify a technology that treats that contaminant. You may choose as many contaminants as you like and REMTEC will search, based on the AND condition. For example, if you choose BTEX, Oil & Grease, and PCBs, REMTEC will only search for technologies that can treat all of those contaminants (AND condition). Ignoring this option will tell REMTEC not to limit its searching based on contaminants. Acronyms and abbreviations can be displayed by pausing the mouse pointer over the name in question and viewing the status bar.

What type media is to be treated?
The list of media types will vary depending on the technology type chosen (Solid, Liquid or Off-Gas). Fine Grain, Coarse Grain, Stone/Gravel, Clay, Fractured Rock, Sediment, Sludge, Ash/Slag, All Soils, Ignore. For example, All Soils Technology can treat Fine Grain, Coarse Grain, Stone/Gravel, and Clay. If you choose Ignore, the data will not be filtered by media type. You could also choose <, >, or =, i.e., Fine Grain Soil < 2mm, Coarse Grain Soil 2 - 5 mm, Stone/Gravel > 5mm, etc.

Exsitu: Media that needs to be moved in order to be treated. Insitu: Media that can be treated in place. Insitu, saturated: media that is in the groundwater. Insitu, unsaturated (vadose): media that is above the groundwater table. Both Insitu: Technology can be applied in the saturated and the unsaturated zone. Ignore: Choosing this option will not specify a particular type of media to be searched.

What type of treatment process do you wish to use? Incineration, Vitrification, Thermal, Solidification, Organic Extraction, Metal Extraction, Chemical, Biological, Physical, Adsorption, Soil Washing, Post Treat, Pre Treat, Ignore. You are presented with a list of technology categories depending on the technology type (Solid, Liquid or Off-Gas) and the location (insitu or exsitu) previously selected. Clicking on a checkbox will restrict the search to technologies in that category. Ignore: Will not restrict the search to any particular process type.

Description of Treatment Processes
Conventional Incineration: high temperatures (>800ºC), used to volatilize and combust contaminants, e.g., rotary kiln, liquid injection, infrared incinerators.
Vitrification: contaminated soils and sludges are melted at high temperatures to form a glass and crystalline structure with very low leaching characteristics.
Thermal: any other high temperature process, e.g., thermal desorption, thermal reductive destruction.

Fixation/Stabilization: contaminants are bound with a stabilized mass (fixation) or reactions are induced with a stabilizing agent to reduce mobility (stabilization).
Organic Extraction: waste is mixed with a solvent and the organics and solvents are extracted.
Metal Extraction: metals are extracted with a washing solution (lixifiant) usually acid or base.
Ion Exchange: reversible exchange of anions or cations in solution with "loosely attached" ions of anionic or cationic groups present on insoluble polymers (resin).
Advanced Oxidation: process by which oxidizing radicals generated by chemical or photochemical means are used to degrade contaminants.
Chemical: Other chemical.

Biological: biological degradation of contaminants using microbial population.
Soil Vapor Extraction: application of vacuum system to extract contaminants.
Physical Treatment: filtration, membrane processes or settling chambers.
Physical Separation: screens, hydro-cyclones, trommels.
Adsorption: removal of contaminant by adsorbing to a granular material.
Scrubbing: process by which contaminants are removed from material by some physical process such as air-stripping, soil-venting or adsorption to activated carbon.
Volume Reduction/Soil Dewatering: combination of physical treatment equipment designed to separate solid fractions and to remove water.
Electrokinetic creation of electric field within material to cause ions in solution to migrate to certain areas.
Post-Treatment: any type of treatment that renders material fit for use or disposal (e.g., pH balancing, aerating).
Pre-Treatment: any type of treatment that prepares material for treatment (e.g., pH balancing, redox alterations, screening).

Extraction Technology Categories
Free Product Pumping: pumping of free product from subsurface.
Ground Water Pumping: pumping of ground water from subsurface including enhanced mobilization, surfactants.
Gravity Collection: collection of contaminants by natural flow of ground water intercepted by ditch or drain.

Containment Technology Categories
Funnel & Gate: low permeable vertical barriers are placed across plumes. Gaps (gates) in the barriers allow passage of the plume through where it is pumped and/or treated.
Barrier Walls: walls installed in subsurface to prevent movement of contaminant.
Hydraulic Containment: system of wells and pumps to prevent migration of contaminants off of site.

Restrict Data to Technologies Funded By
Selecting an option here will restrict the search to those technologies that have received funding from that particular program. For example, DESRT: Development and Demonstration of Site Remediation. GLCuF: Great Lakes Cleanup Fund. GASReP: Groundwater and Soil Remediation Program. EPT: Ontario Environmental Technology Program. SuperFund Innovative Technology Evaluation Program. ARCS: U.S. Assessment and Remediation of Contaminated Soils. Ignore.

Stage of Development
Selecting an option from this box will restrict the search to technologies which have reached that stage of development. Inactive implies that there may be no company currently marketing the technology. Inactive technologies are included for completeness and to assist developers in knowing what has been attempted previously.

Bench Scale - apparatus mounted on bench or contained in small lab.
Pilot Scale - apparatus can treat a small amount of total site, usually on site.
Full Scale Demo - full scale unit has been constructed and demonstrated.
Commercial - has been used in at least one commercial job.
Inactive - technology is no longer being marketed or current address of developer or vendor is unknown.

Country of Origin of Technology
This option allows you to restrict the data by country of origin of technology. If you only wanted to examine Canadian technologies, you could select 'Canada' from the Specify Country box. The list of countries shown will be based on the search criteria set so far. If you wanted to reset the country list, you would either double-click on the dropdown box or select the 'Any Country' button.

REMTEC Advanced Search

The advanced search is a more traditional database search where you can choose fields from the database, set conditions and use Boolean operators (AND, OR) to specify your search criteria. It is based on a subset of the Problem Solver search. You may specify up to four sets of advanced search criteria in addition to any Problem Solver options you have already set.

The criteria that you type in this entry field is dependent on the field type. REMTEC will analyze the field type and update the conditional selection box. By examining the conditional options, the field type should be apparent. In the case of a Boolean field, REMTEC will enter the word True for the criteria.

Text: Typically, like or not like. You would type in text that you wish to match. It is common in this type of search to use Wild Card Search capabilities. For instance, you could search technologies which have had projects in certain states or you could search Project Funding Agency beginning with Waste. Numeric: Typically, more than, less than, equal to, not equal to. Here you may enter a number, for example, Project Cost less than $50,000. Boolean: Typically, true/false fields. For fields that only have two possible results; for example, REMTEC will search for technologies with audited projects and tell you true that the project was audited or false that the project was not audited.

REMTEC Browser

Browser will allow you to view all technologies without any restrictions. It will also allow you to browse technologies by media treated (solids, i.e., soils, sludge, and sediments; liquids, i.e., technologies that treat ground water or process water; or off-gases). You may then view the results.

REMTEC Keyword Search

First Select a Technology Type: Solid, Liquid, Off-Gas or 'Any' (no restriction). Then type the word (s) you are searching for in the keyword text box. The word will be searched for in the technology name, description and keyword field. The number of technologies that contain that word will be displayed in the search status box. This information box provides constant and immediate feedback after any search criteria is specified. Every time you make a choice that further refines your search, REMTEC will immediately update the search status box. You are now able to see precisely which conditions are limiting your search. You may then view the results.

REMTEC Options for Viewing Results

Viewing the Results of Your Search:

When you first enter the Results screen, you are in Short List viewing mode. Here you are presented with a list of the technologies that match your search criteria. You are also presented with View Option Buttons which will provide more information on the technology.

View Options
Short List -
This is the default viewing mode. In the first column of the table the technologies are listed in alphabetical order based on company name and trade name. The second column contains the stage of development (Commercial, Full Scale Demo, Pilot Scale, Bench Scale or Inactive). The third column displays the country where the technology was developed. The fourth column displays the number of Projects where the technology was used. Projects are actual examples of the technology in use. They include references and detailed information on the results. The last column displays the operating cost (US$/tonne), based on the Cost Assumptions included by the vendor.

Detailed List - This list displays more detailed information on the selected technology. The following information is displayed in this view:

Technology Type: technology category.
Contaminants Treated: list of contaminants treated by technology.
Media Treated: list of media types treated.
Funding From: list of government funding sources.
Description: detailed description of technology (scrollable).
Limitations: description of technology limitations.
Reg. Status: list of any regulatory approvals obtained.
Concerns: description of any environmental concerns.
Databases: list of other databases in which that technology appears.
Availability: list of countries where distributors, vendors or branch offices exist.
Portable: if checked, the technology is portable.
Health & Safety Plan: if checked, then a health and safety plan exists.

Developer and Vendor Information - Names and addresses of developers and vendors. This list is scrollable in cases of multiple companies.

Cost Assumptions - This view is a variation of the Detailed view, but it now includes the cost assumptions that were made in determining the operating cost, which is quoted in the Cost column. Here the vendors provide information on the contaminant, contaminant levels and media that the estimate is based on. They can also quote the capital cost for the technology. It is important to analyze the cost assumption section whenever you are comparing operating costs of different technologies.

Project - This view includes project year, location, full scale, media, amount treated, funding agency (contact and phone), audited (auditor and phone), description, contaminants, untreated levels, treated levels, units, removal efficiency, untreated leachate, treated leachate, leachate test method, cleanup goals, emissions, total cost, feed rate, setup in days, and breakdown in days.

Literature References - A list of relevant literature references for the technology.

Process Schematic - Schematic diagram of treatment process will be shown in a window.

Technology Photo - Photograph of technology is shown in a window.

Resorting the Information
By clicking the mouse on any of the column headings (Technology Name, Country, Stage, # Proj, Cost) the results list will be resorted based on that column. By default, the listed ones are sorted alphabetically by Company Name and Technology Name.

Country - Clicking on this heading will resort the list alphabetically by country.
Stage - Clicking on this heading will resort the list alphabetically by stage of development.
# Proj - Clicking on this heading will sort the list from technologies with the most projects to the least number of projects.
Cost - Clicking on this heading will resort the list from most expensive to least expensive.

REMTEC Printing Results

Print results by complete information, short list, general information, developers and vendors, projects/demonstrations, literature references, schematic, and photograph. You may also print the selected technology or matching technologies. Print a variety of reports.

Sample Screens:

REMTEC Additional Features

Using Windows Cut and Paste: Any fields in the database where you can highlight text using the mouse can be copied to the windows clipboard. This is accomplished using the standard MS Windows shortcut keys: CTRL C to copy to the clipboard AND CTRL V to paste from the clipboard to another application.

Status Bar Help: When moving the mouse pointer over various parts of the screen, useful information or instructions are displayed in the status bar.
Shortcuts for Changing Views: In the View Results screen, you can change between the Short List and the Detailed views by double-clicking the mouse on a particular technology. You may also switch to Project View by clicking on the Number of Projects or switch to Cost Assumption View by clicking on the cost.
Double-Click to Zoom: Many of the fields on the view forms will expand into a "zoom" window for easier viewing when double-clicked.
Increased Speed for CD-ROM Version: CD-ROM users can increase the speed of searches by copying the data file (remdata.mdb) to the REMTEC directory on their hard drive. This, however, will use an additional 25 MB of hard disk space.