Pressing Onward: A Dewatering Blog

When Heavy Metal Isn't Music and Keeping Water From Ponds is a Good Thing

By Michael Stock



Evoqua Water Technologies secured a contract with a mining company in México for two MC Press® filter presses for mining. There are three major mining operations in Mexico and this company will use the MC Press filter presses to dewater the non-valuable byproducts of mining for disposal. The filter presses will allow this company to continue their mining operation and will reduce their environmental impact.


The MC Press filter press from Evoqua Water Technologies is the most versatile dewatering equipment on the market.  The press has short operating cycles, is simple to use and can operate in rugged environments—perfect for this particular mine. The MC Press filter press is one of the largest filter presses made. Together, the two filter presses at the mine will produce 59 tons of solid tailings per hour. The filter presses run cycles automatically; the MC Press filter press is designed to run 24/7/365 in a “lights out” operation, meaning an operator isn’t needed to run the machines.


Evoqua Water Technologies was chosen to produce the MC Press filter presses by this mining company because of Evoqua’s expertise in the mining industry and quality of its machines. 

“Securing this contract confirms Evoqua’s status as the leader in mining dewatering technologies,” said Jamie Hart, Vice President and General Manager at Evoqua Water Technologies.  “This mining company, one of the largest in Mexico, recognized our expertise in the industry and their business will benefit from the efficiency of our products.”

The mine where the MC Press filter presses will be used, would have been forced to stop production within 2 or 3 years if they continued to operate without a filter press.


Previously, this location was disposing of high-water-content tailings into a tailing pond. Tailings are the materials left over after the desired mining material (copper, zinc, gold, and silver) is removed. Tailing ponds have a fixed capacity, and the company would have been forced to halt production when they ran out of space.

Now, instead of disposing of tailings into a tailing pond, the Evoqua MC Press filter press will produce stackable solid tailings and allow the mine to remain in operation.

iStock-598814366-tailings pond.jpg

The MC Press filter press is used to create dry stack tailings, which mitigates the use of tailing ponds, shown above. It's better for the environment and local communities, and is also safer.

Using a filter press to produce dry tailings is also a safer and more cost-effective alternative to tailing ponds. Tailing ponds can leach into groundwater or break through pond walls and flow into valleys or rivers. Dry tailings, alternatively, are stacked and significantly less threatening to water sources.

This mine is located about 15 miles from the city of Chihuahua, Mexico and mines precious metals such as copper, gold, silver and zinc.

Time-lapse video showing the build of an MC Press filter press in Evoqua's plant in Holland, Michigan


How does your dewatering process stack up? We can help figure it out when you call  (844) 450-2910.

Looking for more ways to improve the performance of your filter press? Download our guide for more dewatering tips, tricks and maintenance advice!

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