Pressing Onward: A Dewatering Blog
July 17, 2018

Filter Cloth Management For Tough Slurries - Easy As Pie

  Pre-coating can help extend cloth life. If you’ve been keeping up with our blog posts, you’re probably already familiar with how important it is to match the filter cloths in your press to your specific type of slurry and process. For a refresher, see this post on the wide range of material, weave, fiber types and thread counts we offer to meet any combination of slurry characteristics. But there are some applications for which no type of cloth can do it alone. Some processes in food & beverage operations, automotive plants, steel mills and other heavy industries can produce oily or sticky sludges that will quickly blind a filter cloth, make it impossible to clean, and shorten its lifespan from months to weeks or less. Like flour on a rolling pin In these cases, you can extend cloth life and save money by investing in a system that pre-coats cloths with a material (usually diatomaceous earth) that prevents oily, sticky sludge from binding to the cloth fibers. If you’ve ever made a pie crust from scratch, think of coating the rolling pin with flour to keep the dough from sticking to it and you’ll get the idea. In addition to extending cloth life, pre-coating can make your dewatering process run more smoothly. Cakes release much more easily, and there’s less downtime caused by cleaning and changing cloths. Costs include a pre-coat skid with its own pump, tank and piping; plus the pre-coat material itself and the time involved in setting up a PLC program to control it all. Is pre-coating for you? For some of our customers, pre-coating is an obvious choice. Others prefer frequent cloth changes. The only way to know what’s right for your operation is to weigh the costs and benefits of the two scenarios along with other factors such as your capital strategy, plant environment and workflow. The best way to sort it all out is to have your process analyzed by the folks at our lab. They can help you identify the right cloths and the right pre-coat system to protect them. Then they’ll help you work through the options so that you can decide which is a better fit for your operation: pre-coating your cloths, or replacing them more frequently. Either way, there’s no reason to let stubborn sludge ruin the party. Work with the experts at Evoqua to get the recipe right, and the rest is a piece of cake. Or, if you prefer, pie.more

June 5, 2018

The Hand Crafted Filter Press

  Need a new press? Do what beer lovers do: Go artisanal. If you’re a beer drinker, you’re in heaven these days. There’s beer for when you’re cutting the grass on a hot summer day. Beer that pairs with steak and chili. Beer for when you want to have more than one, and beer for when one is all you need. These new beverages are all custom brewed by artisans with a passion for finding the perfect recipe. It’s as if you could have a beer designed and brewed to meet your own individual taste. It turns out that what’s good for beer is great for filter presses. No two applications are alike Think about it: your process may fall into a category with specific requirements like industrial laundry, mining, or stone cutting; and your individual operation has its own unique needs in terms of size and space; environmental requirements; location, working conditions, and limits imposed by the other equipment in the plant. With so many variables, there’s no such thing as an off-the-shelf filter press … any more than there’s a mass produced lite beer that will pair with your Bison Burger. Countertops to mountaintops But there is a solution: a custom-configured press from Evoqua. From small mom-and-pop operations that cut granite countertops to huge mining operations that cut into mountaintops, there’s an Evoqua filter press size and capacity that we can design and build to meet your application’s need. Why? Because we’re artisans. And we have all the ingredients. Our wide range of manifold designs will assure a smooth fit to the application and to the plumbing in your shop. With hundreds of filter cloth choices, and the experience it takes to analyze your slurry, we can find the right cloth for the job. And we can engineer any degree of automation from full manual to full auto. The expert brewers And what good are the ingredients without a master brewer? Our staff is in the house, ready to mix it up, at our engineering center in Holland, MI. As the OEM of JWI® and USFilter® filter presses we have original specifications and drawings for those presses as well as for filter presses with the names Perrin, Passavant, IPM and Siemens on the side. We’ve been providing both standard and custom recipes for new equipment, plus spare parts and replacement parts for more than 40 years, along with best-in-class service. Even the service can be customized to fit your specific needs and those of your turnkey Evoqua system. With all of our experience and design expertise, few people can match our ability to quench your thirst for a custom application. And nobody can match our passion for perfection. Call us and see.  more

May 30, 2018

Tall? Grande? Vente? How Big Is Your Filter Press?

  When you call Evoqua to order new cloths, here’s how to know what size to ask for. Like coffee from your local coffee shop, our presses come in a variety of sizes. Unlike your local coffee shop coffee, our sizes are denominated in millimeters. So when you call us to order spare cloths and we ask you what size you need, “Tall,” “Grande,” or “Venti” aren’t going to work. You can size your press in the time it takes to grab a no-whip mocha If you don’t have handy access to the specs for your press, here’s an easy way to get the answer: measure the width of a filter cloth. If you don’t have a metric tape measure handy, you can use a web or smart phone app to convert. Or say 'hey' to your phone's Assistant. Or just multiply your inches by 25.4. Voila, you’ve got millimeters. For example, if your cloth measures 24 3/4 inches across, multiply 24.75 x 25.4 - that gives you 628 millimeters. In our shop, that’s rounded up to 630. And that’s the size of your press. Simple! Now step out and order some coffee. You deserve it.more

February 7, 2018

World Travel - A Lost Flashlight - and the voice of experience

    Bankok, Thailand expert spotlight: field service engineer, tim jacksonmore

January 9, 2018

Stock Up On Spares - Parts From Evoqua

Don’t spare the spares. Know which spare parts you need to stock—and which ones you don’t.more