Rethinking Lake and Pond Water Treatment

Rethinking Lake and Pond Water Treatment
Posted in: Disinfection
By Mark Timmons
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I installed my first lake water treatment system over 40 years ago and since then we have treated hundreds of lake water systems in the traditional manner, like the system in the above photo (link is below):

Not only do we use chlorination, but we also use ultraviolet for disinfection as Giardia Cysts and Cryptosporidum Cysts are not always effectively killed by chlorination only.  Actually, UV does not kill bacteria - it simply neutralizes it so that it cannot reproduce.  The bacteria are still in the water although they are "dead men walking." In a traditional lake water system we start with a 5-micron backwashing sediment filter (like a sand filter).  This filters out the fish and turtles and all objects above 5 microns in size (which is smaller than the naked eye can see).    Next, we use a proportional injection system to inject chlorine ahead of a contact tank (or tanks).  Ideally, you want a 20 minute contact time so the bigger the tank or the more tanks you have the more contact time there will be. You can “superchlorinate” which simply means that you add a larger dose of chlorine which reacts more  quickly.  We chlorinate with a Stenner injection pump which uses a peristaltic tube that is dramatically superior to any diaphragm pump, however, the tube should be replaced twice a year (which is simple and at a very minimal cost). The water is stored in the retention tank until it is called for at which point it passes through a backwashing carbon filter.  Again, bigger is better so that all the chlorine and disinfection byproducts (DBP’s) are removed.  Finally, we go through a 5 and 1 micron pleated filter and then into the ultraviolet disinfection chamber. This method has worked exceptionally well for us for over forty (40) years. However, some recent advancements in water treatment have us re-thinking this system.  These new methods are what we call “disruptive technology”? A disruptive technology is one that displaces an established technology and shakes up the industry or a ground-breaking product that creates a completely new industry. When the PC replaced the typewriter, it forever changed the way we work and communicate. Cell phones were “disruptive technology” because it allowed us to communicate from almost anywhere and the Pulsar Charged Membrane Filter System is “disruptive technology” in that a filter system can now remove the following contaminants:
  • Bacteria (99.8%)us-water-pulsar-charged-media-filter-cartridge-b7c
  • Iron
  • Virus (90-92%)
  • Copper
  • Cysts
  • Lead
  • Tannin
  • Chromium VI
  • Endotoxins (96%)
  • Selenium
  • Legeonella (99.9%)
  • Tannic Acid
  • Silica
  • Humic Acid
  • Heavy Metals
  • Cryptosporidium
  • Fulvic Acids
Unlike mechanical filters which rely on “pore size” the Charged Membrane Filter (CMF) technology literally “secures” the contaminant. It is “absorbed” in a very real way. Charged Membrane Filtration or CMF is manufactured with Nano Alumina Fibers that have a Zeta potential of 51 millivolts. A CMF cartridge retains bacteria, virus, cryptosporidium oocysts and even tannin with its strong Zeta Potential. The filters have a long life and are easily replaceable – usually once a year. silecte-atlas-frontRecently, we incorporated Silecte™ Quantum Disinfection into our product line.  Silecte™ media is a cationic electron magnet as it is a revolutionary new disinfection system for water applications. It’s highly charged substrate and surface areas have millions of potential sanitation sites per square micrometer. The disinfection media surfaces have been modified through a technological breakthrough (US Patent Pending 62/128,160). Any microorganism that comes into direct contact with the surface of the disinfection media is immediately and completely destroyed. The disinfection capability of the media is a result of energetic positively charged sites that are created at the disinfection media surface. When microorganisms (bacteria, virus, cysts, algae,  yeast, etc.) come into direct contact with those dynamic sites, the electrons inside the pathogens are instantly attracted by the positively charged surfaces. This causes the entire structure of the microorganisms to collapse, with the electrons transferring immediately to the media surface. According to the BS EN 1276 Antiseptic and  Disinfectant Standards, “A product that has the ability to  reduce by 10E+5 (5 log) the number of viable bacterial cells belonging to referenced strains of P. aeruginosa, E. coli, S. aureus and E. hirae is considered a disinfectant”. The EPA and other certified laboratories have tested Silecte™ under these disinfection conditions. The results can be seen in the table below.
bacteria Pseudomonas aeruginosa log 7
bacteria Escherichia coli log 7
bacteria Staphylococcus aureus log 7
bacteria Eterococcus hirae log 10
bacteria Legionella adelaidensis log 6
yeast Candida albicans log 6
algae Anabaena constricta log 5
Chlorination and/or Ultraviolet rarely get to log 3!  This is incredible technology that is revolutionizing water treatment around the world.   Quantum Disinfection requires no contact time – just “contact” with the media (pictured to the right). The media is contained inside a small 10” cartridge that flows up to 10 GPM.  If you need more, you just add a “parallel” system. Now, in some cases it is possible to eliminate the chlorine, but here is the limitation of Silecte™, or for that matter the Charged Membrane Filter:  The water needs to be clean and clear and not contain algae or other matter than can “blind” the media. Iron, manganese, tannin, turbidity, algae and other organics have to be removed BEFORE the CMF or Silecte™ Quantum Disinfection, so there is no “one system fits all” application.  You do need to understand that with ultraviolet, the bacteria are still alive but rendered harmless by virtue of eliminating their ability to reproduce, but they are still “dead men walking.” With CMF, they are trapped.  Literally, they are “in jail” and cannot escape due to the zeta charge. With Silecte™ Quantum Disinfection, the electrons are literally “sucked out” of the microorganism and they cease to exist.  They aren’t dead men walking or in jail – they are totally and completely destroyed!  I don’t know about you, but if it were my water, I think I would prefer that the little critters were just totally gone. QuantumDisinfection-01
June 24, 2016