A potential solution came out ...

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A potential solution came out of the CCTV Survey of serage network we had carried out in 1997. We found that none of the RCC sewers showed any signs of crown corrosion despite being more than 40 years old at the time. The Reson: The city supply was based on ground water which was rich in nitrates. Hence a potential solution is to add ~50 mg/l as Nitrate nitrogen in the pump sump. The aerobes which are very quick multiplying, can also use NO3 as electron acceptors and keep septicity at bay. This has been successfully tried at a small SPS as well, with good results and elimination of odors

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