As WCTI begins to capture more and more of the cooling tower treatment Market, with its innovative, patented sustainable natural green chemistry process in water conservation, the major's (left up to your own determination) are coming out with a "me too" approach. Where were the majors before WCTI began to eat into their market? Of course, some majors have had zero bleed approaches to water treatment, but frankly they were too expensive for most institutional markets (very low ROI) and still did not address the total discharge of solids from the process. Many still have to use sustained chemical feed to achieve this before, during or after the towers bleed. I call this their "designer" make-up and sewer treatment process. Oh, by the way, the revenue that they might lose on the lower water use, is made up in the equipment sold or chemicals used in their designer process.
Their process employs expensive "pretreatment" and "post bleed" equipment such as, HERO, lime softening, evaporation ponds etc... just to name a few, to achieve zero tower bleed conditions. Many have come out with questions and concerns to combat WCTI and its success that would make their own scientists blush and nervous. Most of these concerns that are designed to scare their own customers and prospects about WCTI's proven technology have been answered and or debunked in some cases by asking them to refer back to their own water handbooks for reference.
When I worked for one of these majors, I fought off the NCD (magnet) people for years on a regular basis and in just about every situation, won the argument by proving that NCD's (now pulsed power & hydrodynamic systems), have the same issues to deal with that chemical applications do. Usually, there was only limited success in one department or the other (i.e. corrosion, scale or microbio) and not all together without some addition of chemical to offset these concerns. At least chemical treatment allowed for addressing all concerns without the large expense that most NCD's warranted. Neither the NCD's nor the existing chemical programs could get the tower blowdown to less than 15% on a good day without a tremendous increase of OPEX and capital investment.
WCTI has now earned its stripes as the leader in water conservation for regular sources of municipal drinking water supply and well water. However, one argument that cannot be matched, is the ability of WCTI to take on "re-use"/"reclaim" water as a viable source for cooling tower make-up at a very high ROI. You can see most of this continuing story at WCTI website www.water-cti.com/published-papers.html