Method for treating water over an extended time using tablets and packets

A procedure to control microbial growth and other contaminants present in the water of climate control systems involves using tablets or radiators to effectively control the growth of microbes such as fungus, molds, bacteria, and virus found in water for an elongated time period. The tablet or packet formulations comprise at least 2 metals and also at least a chelating agent. Optionally, more soluble salts are also added into the formulations to cause an initial jolt of the biologically active chemicals from the water accompanied by a slower release of the less soluble chelating metals and agents.


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Air conditioners, heat pumps, dehumidifiers, and humidifiers, can collectively be known as climate management systems. Air-conditioners, heat pumps, and dehumidifiers circulate air by means of a chilled surface. As the hot air is cooled below its dewpoint,water condenses and accumulates on the cooled surface and typically drops into a group reservoir where eventually the accumulated water drains to the outdoors by means of a drain point. In the moist and cool condensate pan surroundings, states are favorablefor that the growth of germs which could be entrained by the passing air. Based upon the operation or duty cycle of the specific system, this water sometimes stays stagnant for extended intervals, thereby promoting microbial and fungal growths onwater-contacted components and surfaces.

During winter months, humidifiers are sometimes utilized to humidify dry atmosphere by passing the sterile atmosphere across a surface. Systems like pan humidifiers, portable humidifiers, electricity wetted-element humidifiers, atomizing humidifiers, ultrasonichumidifiers, and rigid media humidifiers are widely utilized. A humidifier by character takes a water source which is evaporated into dryer atmosphere. These water sources can promote microbial and fungal colony growths that could be entrained into theventilation system through the passing air stream. Treating the water used in those systems with biocides can radically reduce the likelihood that airborne toxins are entrained.

The dispersion of microbes such as bacteria, virus, mold, and fungus can be the source of sickness to vulnerable occupants in the climate controlled area. For example, Legionella pneumophilia has been proven to exist in this kind of environment and hasbeen connected to Legionnaire’s disease. Other microbes can contribute to”sick house” or”sick building” syndrome. Many men and women are also allergic to the molds and fungus entrained in the house’s ventilation as the air passes over contaminated water.

By treating the source where these microbes can be entrained from the climate control system’s circulating air, these occasionally toxic airborne microbes can be considerably reduced or even removed. 1 method to eliminate these microbes would be to treat thewater contained in the water reservoir or source.

It’s usually not a trivial matter to get a climate control system such as an air-conditioner air handling unit. Hence, for minimal maintenance, the treatment of this microbe-laden water in those sealed systems would best be achieved byusing a automatic time-released or lengthy duration technique. For instance, one tablet or packet may diminish bacteria, algae, viruses and mold at a water reservoir for an entire spring or summer season (e.g., about 3 months or more ).

Metals like silver (Ag), nickel (Ni), zinc (Zn), copper (Cu), and tin (Sn) are known in the art as successful biocides. For example, Ag is successful against bacteria and virus. In particular, a concentration of about 0.02 ppm (or 20 ppb) inwater is effective against Legionella pneumophilia. Cu is also an effective algaecide and in some cases a bactericide. Other compounds may also be effective against different microbes to differing degrees.

Metals such as these used as a biocide are typically supplied in a water form form. Hence, these substances are generally added to water systems as a water soluble salt. In order to extend the biocidal efficiency of the highly soluble saltsover an elongated period of time, the chemicals must be emptied to the water automatically or added independently on a program. A much better way of introducing these powerful metals into the water would be a controlled dissolution. This type of controlleddissolution procedure would drastically decrease the manpower and equipment needed to provide the biocidal treatment.

Equally crucial within an aqueous biocidal metal application is the equilibrium of those metal ions in solution. There are many anions within water with the capacity to precipitate out the metal beams, and because their accessibility in alternative isnecessary to work against the microbes, a way of keeping the metals in solution is extremely beneficial. If provisions aren’t designed to ensure some level of these ions in solution, they will precipitate out negating their impact against microbes,and other materials will need to be additional costing the user more in raw materials and maintenance. 1 known technique to ensure that these powerful compounds stay in solution where they’re effective against microbes is via the use ofchelating brokers which have a stronger affinity toward the metal ions than do the anions within the water. Certain chelating agents like salicylic acid (SA) are also generally known by those skilled in the art to be biocides. For instance, SA isknown to be a powerful fungicide. Thus, using chelating agents like SA along with the metal biocides will provide dissolved and secure chelated metal ions as well as a dissolved, metal free chelating agent that can also enhance the metalbiocide.

IP reviewed by Plant-Grow agriculture technology news