Krudico's Nitrate Reduction systems are available in many different tank and control valve sizes to handle both your flow rate requirements and the nitrate con-tent of your water. All systems are alternating in design in that one or more tanks are on line while one tank is in regeneration/standby. All control valves are meter initiated, the gallonage between regenerations is pre-set to prevent overruns and minimize salt consumption.
The 1 1/2" systems are twin alternating only while the larger 2" and 3" models may have two, three or more tanks in parallel for higher flow rates and capacities, dependent on the individual needs of the water supply.
All models are equipped with internal "no hard water" bypasses so that raw water containing nitrates cannot enter the system during regeneration.
Tanks made of non-corrosive fiberglass which eliminates the potential leaks from pitting, etching or electrolysis, problems common with metal tanks.
Krudico, Inc. has been a forerunner in nitrate reduction using nitrate selective resins since they became available in the mid 1980's. Prior to the manufacture of selective resins, nitrates were reduced by running water through standard anion resins manufactured by several USA and foreign companies.
The standard anion resins, while able to reduce nitrates, had one large liability. If the water to be treated contained sulfates, the sulfate ions were held onto the resin media stronger than the nitrate ions. Therefore, if the equipment malfunctioned, ran low on salt for regeneration or the water chemistry changed, nitrates could be "dumped" in the water supply at much higher levels than contained in the influent raw water. This is caused by the stronger held sulfates pushing the nitrates off the resin during the normal service run of the equipment.
Nitrate Selective resin has a higher affinity for nitrates than sulfates, therefore preventing the dumping of high amounts of nitrates even if the resin is run past it's capacity. At that point, the effluent nitrates will be no worse than what is contained in the influent raw water supply.
Interior Distribution System made of non-corrosive PVC with .010 slotting to prevent resin loss. |
