Drinking water treatment system including hydrogen sulfide scrubber using triazine compound and associated methods

A hydrogen sulfide scrubber for scrubbing hydrogen sulfide-containing gas from water extracted from an aquifer in a drinking water treatment system, the hydrogen sulfide scrubber comprising:

• at least one scrubber tank;
• scrubber media within said at least one scrubber tank;
• at least one scrubbing solution circulator comprising a dispenser for dispensing scrubbing solution into contact with said scrubber media, a sump for collecting the scrubbing solution after contact with said scrubber media, and a circulating pump for circulating the scrubbing solution from said sump back to said dispenser after contact with said scrubber media;
• and
• at least one triazine compound supply for supplying a triazine compound to the scrubbing solution.

A hydrogen sulfide scrubber for a drinking water treatment system for scrubbing hydrogen sulfide-containing gas from water extracted from an aquifer in a drinking water treatment system, the hydrogen sulfide scrubber comprising:

• a first scrubber tank having a gas flow inlet for receiving the hydrogen sulfide-containing gas flow, and a gas flow outlet;
• a second scrubber tank having a gas flow inlet connected to the gas flow outlet of said first scrubber tank;
• scrubber media within each of said first and second scrubber tanks;
• a first scrubbing solution circulator using a first scrubbing solution in said first scrubber tank, and a second scrubbing solution circulator using a second scrubbing solution in said second scrubber tank, said first and second scrubbing solution circulators each comprising
• a dispenser for dispensing scrubbing solution into contact with said scrubber media,
• a sump for collecting the scrubbing solution after contact with said scrubber media, and
• a circulating pump for circulating the scrubbing solution from said sump back to said dispenser after contact with said scrubber media;
• and
• at least one triazine compound supply for supplying a triazine compound to said second scrubbing solution circulator.

A method for scrubbing hydrogen sulfide from a hydrogen sulfide-containing gas flow in a drinking water treatment system, the method comprising:

• dispensing scrubbing solution from a dispenser into contact with scrubber media in at least one scrubber tank;
• collecting the scrubbing solution in a sump after contact with the scrubber media;
• circulating the scrubbing solution back to the dispenser after contact with the scrubber media;
• and
• supplying a triazine compound to the scrubbing solution.

A method for retrofitting a hydrogen sulfide scrubber of a drinking water treatment system from a caustic supply to a triazine compound supply, the hydrogen sulfide scrubber comprising first and second scrubber tanks connected in series to a hydrogen sulfide-containing gas flow, the method comprising:

• disconnecting the caustic supply for the first and second scrubber tanks;
• connecting the triazine compound supply for the second scrubber tank;
• and
• connecting a scrubbing solution charging line between the second scrubber tank and the first scrubber tank.