OILY WASTE TREATMENT PLANT AT THE U.S. NAVY FUEL DEPOT,
MANCHESTER, WASHINGTON
Indru J. Primlani, Manager of Environmental Services
Valentine, Fisher & Tomlinson
Seattle, Washington 98101
INTRODUCTION
Valentine, Fisher & Tomlinson has been tasked with designing an oily waste treatment
plant for the fuel depot at Manchester, Washington.   The requirements for performance
of this plant and flow quantities anticipated have previously been determined by extensive investigation and reports provided by the government and other consultants.   This
information has been utilized in setting up performance criteria for the oily waste treatment plant.
The primary purpose of this contract is to design an oily waste treatment plant to
process wastewater comprising the following:   mixed oils and water; hydraulic and turbine oils; used lube oils; mixed oil and grease; oily sludge drainage; degreasing detergents;
trichloroethylene (other similar materials); bilge water from ships; slopped oil from ships;
and a certain amount of storm water that might enter the system from Project P-034
or from the site of the treatment plant due to external spills.
The design of the process building and systems has been based on data obtained from
pilot plant work on a bench-scale basis, a survey of the state-of-the-art and manufacturer's
reports of performance of various types of equipment.
The purpose of this plant is to handle all oily wastewater generated except for natural
storm runoff in the facility.   The oily water is to be processed to remove oil conglomerates for reclamation or disposal and treatment of the wastewater to make it suitable
for discharge into Puget Sound.   The treated fluid is required to contain less than 10 ppm
oil and grease at all times and collectively less than 1 ppm of heavy metals.   The plant
is expected to operate for 8 hr/day at 100 gal/min and capable of processing approximately 50,000 gal of wastewater per working day.
As a result of pilot plant studies, literature investigations, determination of the state-
of-the-art and other sources of information, it has been determined that the oily wastewater can be processed as stipulated to meet the required effluent discharge standards.
The process includes unit operations, unit processes and heat transfer systems to
effectively handle any combination of oily waste products that have been included in
the scope of this work.
Each batch will have to be analyzed and then the process and chemical feeds established for running the entire batch to completion.   Some batches will require more extensive treatment than others.   The plant has been designed to process the worst anticipated
condition.   Removal of components due to economic measures will limit the capability
of this plant.
LABORATORY BENCH-SCALE PILOT PLANT
The raw sample was obtained from the Puget Sound Naval Shipyard, Bremerton, and
from the Fuel Depot at Manchester and was comprised of components which were combined in proportions to best simulate a typical and yet most difficult-to-process sample.
Since most oily wastewater entering the treatment plant would have gone through extensive pumping operations, the sample was circulated through a cyclone separator to
obtain an induced turbulence and physical emulsion in the sample.   The following were
the components obtained to fabricate a 50-gal sample:
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