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RELIABLE AUTOMATIC
EFFICIENT
Effluent regulations on oily waste discharges are becoming
increasingly more stringent. The potential monetary penalties
can run into the thousands of dollars, and damage to the public
image of a company can be a major problem.
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Simple, reliable and effective Manchester-designed
oil separators are a good answer to this problem. Most often,
oily wastewater streams also contain suspended solids, and
occasionally dissolved toxic metals like copper, lead or arsenic.
A Manchester-engineered solution can combine the most cost-effective
treatment technology with site-specific requirements, to provide
a rapid and economical solution which limits a company's financial
risk as well as protecting the reputation of a facility and
its management. |
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Smaller oily wastewater treatment systems,
up to 100 gpm, also lend themselves well to skid-mounted package
designs, which can be relocated and reused if necessary.
For large installations or where the effluent limits are relatively
stringent (below 50 ppm of free oil and grease is usually
the borderline) Manchester engineers will utilize a combination
of technologies for optimum cost- effectiveness. This may
involve gravity separation of the bulk of the free oil, combined
with chemical pretreatment if emulsions are present. |
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A final polishing with carbon filters or membrane
systems may be required to be certain that the effluent limits
are met consistently, and with a suitable margin of safety.
For many large systems, microprocessor controls have proven
worthwhile, both for reliability of operation and to maintain
accurate records for the regulatory authorities. |
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Oily Waste System Considerations:
1. Aqueous Washer Effluent:
With the legally mandated phase-out of CFC and other halogenated
degreasing fluids, companies are retooling production lines
to use water-based cleaners and degreasers. In most cases,
the effluent from these units must be treated to remove oils
and heavy metals before the water can be discharged to the
sewer, or to an open waterway. The contaminants are strongly
emulsified by the cleaning chemicals, and this can somewhat
complicate purification of the effluent. Manchester engineers
have extensive experience with chemical and physical de-emulsification
processes, and can select the right process - or the right
combination of processes - for removal of oil
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and toxic metals down to the required levels
or lower.
2. Training and Supervision:
Oily waste separators themselves are designed to be simple
to operate, but the pre-treatment sometimes requires some
knowledge of chemistry to avoid and excessive costs or even
legal penalties. Clear and complete manuals are integral part
of all Manchester systems, and extensive training of the operating
personnel is carried out during the installation and start-up
stage of every project. When there is a change of operating
personnel, Manchester engineers are often asked to train the
replacements.
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