Field Notes
pH Adjustment Systems for Wastewater: Continuous-Flow vs. Batch Treatment
A continuous-flow pH adjustment system corrects alkaline wastewater automatically, in real time, without batch tanks or manual dosing — the right choice whenever discharge volume is steady and a facility...
Ion Exchange Resin for Industrial Water Treatment: Cation, Anion & Mixed Bed Compared
Ion exchange resin removes dissolved ions from water by swapping them for a different, harmless ion as the water passes through a packed bed. Cation...
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Manganese Greensand, Birm & KDF Filtration Media: How They Compare
Manganese greensand, Birm, and KDF-85 all remove dissolved iron, manganese, and hydrogen sulfide from water — but they use different chemistry, need different regeneration, and...
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Commercial UV Water Disinfection Systems: Sizing and Selection Guide for Canada
UV disinfection neutralizes bacteria, viruses, and protozoa by damaging their DNA with 254nm ultraviolet light — no chemicals, no disinfection byproducts, no taste or odour...
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Activated Carbon Filtration Media: GAC and Catalytic Carbon Guide for Canada
Activated carbon filtration media removes chlorine, chloramines, taste and odour compounds, and a wide range of organic contaminants from water by adsorption — trapping them...
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Industrial Reverse Osmosis Water Treatment: How It Works, When to Use It, and What Pre-Treatment You Need
Industrial reverse osmosis removes dissolved salts, heavy metals, nitrates, and organic compounds from process water — but only when the system is properly sized and...
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Activated Carbon Water Treatment: A Practical Field Guide
Activated carbon water treatment, explained: what GAC removes, GAC vs PAC, EBCT sizing, changeout. A field guide. Request a free sizing review from ERE.
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Industrial Filter Cartridges: How to Choose the Right Type and Micron Rating
Choosing the wrong industrial filter cartridge—wrong type, wrong micron rating, or wrong material—costs money in two ways: premature change-outs if the pore size is too...
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Water Filtration Media: Types, Applications & Selection Guide
Choosing the wrong filtration media is an expensive mistake: the media either fails to remove your target contaminant, exhausts prematurely, or requires operating conditions your...
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