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SYSTEMS AND METHODS TO PREVENT CONTAMINATION OF POTABLE WATER WITH LEAD AND/ OR IRON, AND TO EXTEND THE USEFUL LIFE OF THE POTABLE WATER SYSTEM, WHILE REDUCING MAINTENANCE AND CAPITAL COSTS
SYSTEMS AND METHODS TO PREVENT CONTAMINATION OF POTABLE WATER WITH LEAD AND/ OR IRON, AND TO EXTEND THE USEFUL LIFE OF THE POTABLE WATER SYSTEM, WHILE REDUCING MAINTENANCE AND CAPITAL COSTS
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机译：防止铅和/或铁污染饮用水并延长饮用水系统使用寿命的系统和方法，同时减少维护和资本成本
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摘要
Provided are systems and methods for preventing corrosion, and lead and iron contamination in potable water piping systems comprising lead, non-electrically conducting, and/or iron pipes. A sacrificial/potential anode, made of a material, such as a metal or metal alloys less noble than iron, e.g., zinc, aluminum, magnesium, and/or alloys thereof, is electrically attached to the potable water piping system. Alternatively, an active cathodic corrosion prevention system may be used. The active cathodic corrosion protection system comprises an independent source of DC power, a voltage controller and a non-sacrificial or a sacrificial/potential grounding anode. The negative terminal of the voltage controller is connected to the potable water piping system. The interior surface of the lead and/or iron pipe is maintained at a voltage and/or potential above the reduction potential of the redox reactions between the disinfection chemicals and the interior surfaces of the lead and iron pipes.
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