proven results from state-of-the-art FILTRATION TRAILERS
Advanced Mobile Filtration Services (AMFS) provides on-site Filtration Services with our state-of-the-art mobile equipment anywhere in North America with access to a 53’ tractor trailer. With our ability to filter up to 420,000 gallons per day of fluid with one of our units, big jobs can be tackled in shorter times without hauling vast amounts of contaminated fluid via tanker trucks to disposal sites, while reducing your carbon footprint and generating near-potable to potable water for re-use or disposal to ground, streams, lakes, rivers, aquifers or sanitary sewer systems.
While membrane-based separations of liquids from solids have enjoyed increasing popularity over the last 20 years, that technology has an inherent Achilles Heel: fouling.
This loss of throughput capacity is due primarily to the formation of a boundary layer that builds naturally on the membrane’s surface during the filtration process. In addition to reducing flux performance of the membrane, this boundary — or gel layer — acts as a secondary membrane and diminishes the native design selectivity of the membrane. This inability to handle the buildup of solids has also limited the use of membranes to low-solids feed streams.
At startup, our feed is fed with a slurry and the concentrate valve is closed. Permeate is produced and total dissolved solids and suspended solids in the feed are collected inside our filter pack(s). After a programmed time interval, valve one is opened to release the accumulated concentrated solids.
The valve is then closed to allow the concentration of additional feed material. This cycle repeats indefinitely. Membrane selection is the single most important parameter that affects the quality of the separation. Other parameters that affect system performance are pressure, temperature, vibration amplitude, and residence time. All of these elements are optimized during testing and entered into the programmable logic controller (PLC) which controls our systems. Operating pressure is created by the feed pump.
Our machines routinely operate at pressures as high as 1,000 PSIG (68.95 BAR). Higher pressures often produce increased permeate flow rates, but they also use more energy. Therefore, operating pressure that optimizes the balance between flow rates and energy consumption is used. In most cases, the filtration rate can be further improved by increasing operating temperature.
The temperature limit on our Systems are 175° F (79°C), depending on the filter, which is significantly higher than competitive membrane technology. We can create higher temperature constructions if needed.
The vibration amplitude and corresponding shear rate can also be varied. This directly affects filtration rates. Shearing is produced by the torsion oscillation of the filter stack.
Typically, the Stack Oscillates with an amplitude of 3/4 to 1 1/4 inches (1.9 to 3.2 cm) peak to peak displacement at the rim of the stack. The oscillation frequency is approximately 53 Hz and produces a shear intensity of about 150,000 inverse seconds. Feed residence time is set by the frequency of the opening and closing of the exit valve (valve one). The solids level in the feed increases as the feed material remains in the machine. Occasionally, a cleaner is added to the membrane stack and continued oscillation helps clean the membrane in minutes.
This process consumes approximately 50 gallons (189 liters) of non-toxic biodegradable cleaning solution thus reducing cleaner disposal problems inherent with other membrane systems.
An AMFS Mobile Unit SPECIFICATIONS
- 53’ trailer mounted system
- Two filtration towers have approx. 3,000 sq. feet of combined filtration membrane
- The 2-stage process separates particulates from water
- High resistance to fouling from elements, oil, grease and polymers
- Easily removes suspended solids and dissolved solids, producing permeate with turbidity less than 5 NTU
- Removal of bacteria and virus numbers (99% plus) without chemicals
- Ability to treat fluid with up to 50% solid volume and up to 420,000 gallons per day depending on type of fluids
- Ability to remove particles down to 30 Daltons
AMFS Mobile Technology
Unlike conventional spiral-wound filters, our system employs permanent membrane separation technology. It is best suited for processing slop water, cross-flow filtration, dead-end filtration and dissolved-air flotation-rejection flows, where maximum fluid recovery is essential to minimize disposal costs.
The waste volume reduction membranes process liquid waste in a small-footprint configuration. The AMFS Filtration process treats fluids as high as 50% v/v and assists in the maximum recovery of fluids, drastically reducing disposal volumes.
Because vibration keeps the membranes from fouling, instead of flowing fluid across them, flow rates are not as critical to the AMFS Filtration process.
Good Vibrations Make AMFS Unique
OUR VIBRATION TECHNOLOGY IS AT THE CORE OF THE AMFS SYSTEM
The vibratory action means that high pressure isn’t required to avoid fouling –
Eliminating the need for chemicals or incineration to clean the filters