Every year, 1.165 billion gallons of water are filtered through M.W. Watermark™ filter presses, and that number is growing by about 20% every year. That equals out to about 4.7 million gallons per day, based on a work year with 250 days of operation.
Recycle and Save With Industrial Filtration Equipment
Car and Truck Wash
The car wash industry is expansive, with approximately 113,000 car wash locations in the U.S. About 8 million cars per day and 2.3 billion per year are washed at these various sites. Each of these cars washed require a large volume of water. Fortunately, filter presses, like those provided by M.W. Watermark, effectively recycle an estimated 50 percent of this water, ultimately saving about 10-15 gallons per vehicle.
In the United States, there are about 3,000 industrial laundries. And much like car washes, these businesses go through a lot of water. In fact, water and wastewater costs equal over 50 percent of the industry’s operational costs. A typical washer-extractor requires between three and four gallons of water per pound of fabric cleaned. For context, one set of queen-sized bed sheets weighs about 3 pounds, which totals between 9 and 12 gallons of water required to wash them. Fortunately, water recycling can bring that amount down to less than 2.5 gallons per pound, or 7.5 gallons total.
A grander, and perhaps more accurate, way to look at the vast amounts of water used by industrial laundries is by considering the laundry usage of a 500 room hotel. If a hotel of that size has an average of 70 percent occupancy, then it goes through about 350 sets (1,050 pounds) of linens in a day, plus 350 sets (612.5 pounds) of towels. That’s a lot of water, and a lot of water that can be recycled.
Hydraulic Fracturing and Oil & Gas
There are about 50,000 total active oil and gas wells and about 35,000 hydraulic fracturing wells operating within the United States. These wells use what is known as “fracturing fluid,” a substance that is made up of 94.62% water, 5.24% sand, and less than 0.1% each of friction reducer, antimicrobial, hydrochloric acid, and other chemicals. All of that water adds up, as hydraulic fracturing in the United States uses between 2,600 to 9.7 million gallons of water per well (depending on size and other factors), which adds up to 70-140 billion gallons, or 14 billion barrels, of water used in fracturing each year. Anywhere between 10-70% of this water is returned to the surface as flowback water, which is then recycled through the use of filter presses for use in other wells.
Lime softening is a process of water treatment used for water softening that uses the addition of limewater to remove calcium and magnesium ions, or water hardness, by precipitation. Depending on the hardness of the water, the average water treatment plant produces 1,000-8,000 pounds of solids per million gallons of water treated. This process can take between one and four hours, and for every pound of lime used, about two pounds of sludge are formed. Filter presses work to clean and separate this sludge and produce reusable water.
The are about 44,000 metal finishing facilities in the United States that discharge processed wastewater directly to surface waters through publicly owned treatment works. Fortunately, filter presses effectively ensure that 50-75 percent of that water can be cleansed and reused.
Ready Mixed Concrete
In the United States, there are about 5,500 ready mixed concrete plants that boast a total of 55,000 trucks. These trucks all have to be washed out at the end of the day, which requires about 150-300 gallons of water per truck. This equals to 3,000 to 5,000 gallons per day per single ready-mix plant. These plants use an approximated 1,240 million gallons of wash water annually! Unfortunately, this washout water contains toxic metals, is caustic and corrosive, and has a pH near 12. In comparison, liquid drain cleaner has a pH of 13.5! Filter presses allow for some of this water to be recycled and reused.