Pressing Onward: A Dewatering Blog

Sometimes You Just Need A Really Big Industrial Dryer

By Michael Stock

The inside of a J-Mate dryer by JWI, an Evoqua brand - heated up and ready to start saving you disposal costs!

Sometimes you just need a really big dryer.

You might be thinking: Wait, don’t we have one of those at home in the laundry room? The answer is probably not. We’re talking about manufacturing here, and some manufacturing processes need a dryer – a really big one!

Manufacturing often requires water – lots of it. And that water needs to be cleared of solids and contaminants before it’s released back into the general wastewater stream, or disposed into a landfill. Typically, the manufacturer will employ the use of a filter press, belt press or centrifuge to do a first pass at dewatering. What’s left is a filter cake that might still be 80% water (20% solid), depending on the process.

More Water, More Weight, Higher Cost.

The filter cake must be disposed of and it’s usually taken to a landfill. But waste haulers and landfills often charge by weight – and landfills can’t accept liquid waste, even if it’s non-hazardous.

So….how do you get rid of the extra moisture and weight that leads to all those extra costs? The ideal situation would be to dry the filter cake even more. This is where that really big dryer comes in handy. Whether you do your initial dewatering step with a filter press, belt press or centrifuge, the industrial dryer is designed to pick up where those leave off.

Industrial dryers like the J-Mate® continuous dryer by JWI®, an Evoqua brand, are used in many industries, but largely in the metal finishing industry. This is because metal hydroxides resulting from plating, chrome finishing and other metal finishing processes, are classified as hazardous wastes. The resulting sludge is too expensive to dispose of as a liquid without a filter press to dewater. Even after dewatering, the filter cake can contain mostly water and who wants to pay the high cost for disposing all that water!

J-Mate_Dryer_2016_Retouched.jpgA J-Mate dryer being custom built.

Specifically, the J-MATE® Dryer, by JWI®, an Evoqua brand, used in conjunction with a J-Press® filter press by JWI® can reduce 80 barrels of metal hydroxide sludge to 4 barrels of dried material.

From 80 down to 4.

That’s a huge volume reduction while removing upwards of 90% of the water left in the filter cake.

At the cost rate of disposing hazardous waste why wouldn't anyone want to reduce the weight as much as possible?

Why pay to dispose of water? Reduced weight equals reduced cost. From 80 to 4. What might your cost reduction be?


Think of the savings in disposal costs, and the number of fewer truckloads that it would require?

How soon would this piece of equipment pay for itself? In some cases it takes only 6 months to realize a cost savings. Six months.

What if you, the plant manager, facility manager, or maintenance manager, could reduce the volume and weight of your waste by a factor of up to 80:4 and 4:1 respectively, drastically reducing the cost of disposal and realize a return for the cost of a machine in just 6 months? After your return all those extra costs improves the bottom line – you’ll be a hero!

Sometimes those really big dryers are actually a cost-savings tool. It’s a good thing we design and build them, specific to your process.

Evoqua_Filter_Press_and_Dryer_Installation.jpgThis shows a J-Press filter press used in conjunction with a J-Mate dryer.

 Call 844-704-2920 to ask our J-Mate continuous dryer and how it will help save you save money! You can also ask about our line of J-Press filter presses.

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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