Methods and compositions for reducing chlorine demand, decreasing disinfection by-products and controlling deposits in drinking water distribution systems

1 . A method for improving water quality by reducing chlorine demand, decreasing disinfection by-products and controlling deposits in drinking water distribution systems, the method comprising:

(a) determining the concentration of supplemental oxidants needed to improve water quality; and

(b) producing the needed concentration in drinking water distribution systems by adding the supplemental oxidants at a point after disinfectants are added to the system.

2 . The method of claim 1 wherein the supplemental oxidants comprise activated sodium hypochlorite.

3 . The method of claim 2 where a source of activated sodium hypochlorite is RE-Ox®.

4 . The method of claim 3 wherein the RE-Ox® is prepared by the method of claim 7 .

5 . The method of claim 1 wherein the supplemental oxidants (product) are added as 1 gallons product/10,000 (50 ppb) to 50,000 (250 ppb) gallons of water.

6 . The method of claim 1 wherein the water is chloraminated water.

7 . A method for producing activated sodium hypochlorite, the method comprising a cycle of

(a) diluting brine;

(b) activating the diluted brine;

(c) reducing flow rate of the activated brine to reduce pH; and

(d) monitoring the chlorine count to above 600 ppm; and wherein cleaning is performed frequently between cycles.

8 . The method of claim 7 further comprising

(e) packaging the activated sodium chloride in suitable thermal containers; and

(f) transporting the containers to a site for use in water treatment.

9 . An apparatus to produce activated sodium hypochlorite, the system comprising:

(a) a brine creation stage;

(b) a brine supply stage;

(c) a waste removal stage;

(d) an acid supply stage; and

(e) an output stage.