Month: September 2022

UV POU SYSTEMS. "A concern with UV portable water purification is that some pathogens are hundreds of times less sensitive to UV light than others. Protozoan cysts were once believed to be among the least sensitive, however recent studies have proved otherwise, demonstrating that both Cryptosporidium and Giardia are deactivated by a UV dose of just 6 mJ/cm sq." http://lnkd.in/dTFBJ6P View in LinkedIn

EPA ON POINT-OF-ENTRY (POE) AND POINT-OF-USE (POU) WATER SYSTEMS. http://lnkd.in/d5D6PUe View in LinkedIn

US POU ADVISORY. "No single treatment process can remove all substances in water. Select a treatment unit designed to handle the substance of concern. If there are several substances you want removed from your water, you may need to combine several treatment processes into one system." http://www.health.state.mn.us/divs/eh/water/factsheet/com/pou.html View in LinkedIn

POINT OF ENTRY (POE) DEVICES. http://lnkd.in/dZ3Rwb3 View in LinkedIn

STUCK ON OLD TECHNOLOGY. "Since the 1970s, the water treatment industry stood still, while the technology industry made incredible progress. What would Steve Jobs or other technology innovators do with the POE/ POU water treatment industry?" http://www.watertechonline.com/articles/166470-infusing-technology-into-the-drinking-water-industrys-future View in LinkedIn

REMOVAL OF CHLORINATION BYPRODUCTS. "Various methods ... include adsorption on activated carbons, coagulation with polymer, alum, lime or iron, sulfates, ion exchange and membrane process for the removal of DBPs." http://lnkd.in/dmThrs7 View in LinkedIn

DBP IN WATER. A useful reminder of the issues at hand when considering methods to remove these carcinogens as they enter your home. http://water.epa.gov/drink/contaminants/basicinformation/disinfectionbyproducts.cfm View in LinkedIn

DPB REMOVAL. "Biologically active filters resulted in removing some DOC (25%), DON (18%) and—to a lesser extent—UVA (12%). Removal of THM precursors through the filtration process was low (3%), while the removal of precursors (relative to what was found by DBPFP testing of ozonated water) for trihaloacetaldehydes, chloropicrin and NDMA was high (55, 75 and 67%, respectively)." http://rsta.royalsocietypublishing.org/content/367/1904/4077.full View in LinkedIn

DOB TECHNICAL MONOGRAPH. Useful technical backgrounder on the chemistry of PBPs. http://lnkd.in/dytWwvh View in LinkedIn

ACTIVATED CARBON AND BIOFILTRATION TO REMOVE DPBs. Probably combined with RO, this is a good start. http://lnkd.in/dcEGbiB View in LinkedIn