Over the past 30 years Municipalities and Industries have used Chemicals to control H₂S odors and to help reduce corrosion by lowering the atmospheric H₂S. Thirty years ago it was the best and only way for the reduction of corrosion, however, that does not hold true today. NRPGroup, Inc. has developed a number of products that are chemical free (Green products) for the reduction of atmospheric H₂S and for corrosion, eliminating the need for harsh chemicals that are a hazard to the public as well as to the municipality employees who are in contact with it. In the collection system treating for H₂S using NRP10-1000, will perform equally as well or better in the reduction of atmospheric H₂S as chemicals such as, Bioxide (Calcium nitrate), Thiogard (Alkaline Slurry) and Ferrous Chloride (Iron Ash). The difficulty with these three chemicals are that they are only a masking agent, therefore, the sulfates end up at the influent of the wastewater plants. Overall these chemicals create more corrosion to materials exposed to the water column and in the Bar Screen of the plant than if you used no products at all for the elimination of H₂S. NRP10·1000 is the only product listed above that can treat the atmospheric H₂S and also eliminate the slime layer in the lines, a combination of NRP10-1000/NRP10·1060 reduces the sulfur that builds up over time on the interior walls of the sewer lines but if using chemicals it would have no effect on the slime layer. NPR's unique anti-corrosive product NRP10-1060 is a product when used in conjunction with the wastewater, again helping to prevent corrosion in the wet wells, pumping stations, pumps, equipment and sewer lines.

Conclusion:
Using harsh chemicals to reduce corrosion in most cases does more harm than good for the prevention of corrosion while attempting to eliminate the levels of atmospheric H₂S a contributor for corrosion.

 

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