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Re: RE: bioremediating parts washers
Just a note regarding the wastes generated from parts washers used in the automotive repair industry, whether the units are using mineral spirits or water-based cleaners, including the biiological units.
The major waste constituent/component in spent water-based cleaners (and mineral spirit units as well) used in automotive repair shops are heavy metals. In California where the regulations for metals are more stringent tha USEPA's, the metals are what make the spent water-based cleaners a hazardous waste. In a study by Dr. Katy Wolf and Mr. Mike Morris of the Institute for Research and Technical Assistance in Santa Monica, 17 shops used a variety of water-based cleaning systems and cleaners (including a biological-enzyme system) and more than half of the spent water-based cleaners were determined to be a hazardous waste. The addition of PERC from aerosol cans also contributes to making it even more of a hazardous waste.
Spent water-based cleaners from the biological units used in the test shops were also found to be hazardous due to the concentration of metals. It may take a while to concenterate these metals from these units but, there is a high probability that the spent water-based cleaners will be considered a hazardous waste due to metals.
If you would like a copy of the results of IRTA's study, there are number of documents available from the California Department of Toxic Substances Control's Office of Pollution Prevention and Technology Development. It can also be viewed on DTSC's webpage (under OPPTD's publication section) at <www.dtsc.ca.gov>or on the Western Regional Pollution Prevention Network webpage at <www.westp2net.org>.
The following reports/brochures are available:
#613 Parts Cleaning in Auto Repair Facilities: the Conversion to Water (Executive Summary 4 pages)
#614 Parts Cleaning in Auto Repair Facilities: The Conversion to Water (80 pages)
#615 Appendices to Parts Cleaning in Auto Repair Facilities: Data, data, data.
#616 Switching to Water-Based Cleaners in Repair and Maintenance Cleaning: Two page brochure with info on systems, cleaners, cosets, regulatory concerns and FAQs.
#617 Water-Based Parts Washer Systems: A Guidance Program for Users
#618 Water-Based Parts Washer Systems: Case Study Conversions
Along these lines of automotive repair, there are three new publications from DTSC on the use of water-based cleaning units and formulations for automotive brake cleaning operations based on work done by Katy Wolf and Mike Morris of IRTA.
#619a Switching to Water-Based Cleaners for Automotive Brake Cleaning : Two page brochure with info on systems, cleaners, costs, regulatory concerns and FAQs in English.
#619b Switching to Water-Based Cleaners for Automotive Brake Cleaning : Two page brochure with info on systems, cleaners, coses, regulatory concerns and FAQs in Spanish
#620 Brake Cleaning in Auto Repaair Facilities: the Conversion to Water.
#621 Seven Case Studies of Brake Shops Using Water (Spanish is side one and English on side 2).
If you would like copies of any of these reports, please let me know via e-mail or fax at (916) 327-4494. If you have any questions about these repr please give me a call at 916-324-2659.
P.O. Box 806
Sacramento, CA 95812-0806
(916) 324-2659 Fax (916) 327-4494
>>> "Francke, Dale H." <email@example.com> 05/18/00 09:13AM >>>
Last fall we bought a parts washer from System One Technologies which has
the bioremediation type function. This parts cleaner has been used in our
fleet management garage (site of ~4,500 people spread over 7,000 acres). It
has been very well accepted and is doing a very good job. We have generated
no waste to date from this except some samples taken to characterize the
solution. Here is the info on System One that I have:
8305 N.W. 27th St.
Miami, FL 33122
They have a good web site with much information. They also have a trial
program where they will provide a test unit for evaluation. We had ours for
2-3 months before we purchased.
Hope this helps.
> From: Hill, Lin[SMTP:firstname.lastname@example.org]
> Sent: Thursday, May 18, 2000 9:37 AM
> To: 'P2Tech@great-lakes.net'
> Subject: bioremediating parts washers
> Has anyone tried these types of parts washers? (taken from Pollution
> Lin Hill, NHPPP, 603-271-2902
> Water-based parts cleaning became practical with the introduction of
> bioremediation: the use of living organisms to turn hazardous materials
> harmless components.
> Chemists and engineers put microbes to work in an industrial setting by
> creating a parts washer that combines a powerful cleaning fluid with
> bioremediating microbes. The fluid lifts grease and dirt from the part and
> flushes it into a reservoir. Here, the microbes, thriving in a tailored
> environment, digest the grease. The components of the digestion
> and water-evaporate into the air.
> Early bioremediating parts washers had their shortcomings. Some lubricants
> were difficult to clean and the bioremediating process sometimes produced
> barnyard odor. The microbes themselves often succumbed to temperature
> Today's state-of-the-art bioremediating parts washer has corrected these
> problems. New designs combine fluid, filter, pump, heater, and the
> voracious-microbes in a closed-loop system that requires little
> Its cleaning efficiency is comparable to parts washers using premium
> solvents. When used properly, there is nothing to haul or skim. The fluid
> cleans the part, and the microbes clean the fluid. For this reason, the
> fluid remains at peak efficiency and need never be replaced-just topped
> to replace fluid lost to normal evaporation.
> The latest generation of surfactant fluids can remove even fifth-wheel
> grease and other lubricants that defy ordinary water-based cleaners. New
> strains of robust microbes can thrive in a wide range of temperatures. The
> only maintenance required is the monthly replacement of a filter mat that
> captures particulates and supplies a fresh colony of microbes. Disposal of
> the filter mat usually may be as ordinary solid waste.
> Thus is the parts washer once again the simple, easy-to-use,
> machine that does its job with little attention. And at little or no cost
> the environment.
> Contact: ChemFree Corp., Francis Marks, president, 8 Meca WayNorcross, GA
> 30093. Tel: 770-564-5580; Fax: 770-564-5533.
> About the author: Francis Marks is president of ChemFree Corp.