Effect of SRB on Corrosion Behavior of 316L Stainless Steel in the Condition Containing Fungicide and Scale Inhibitor

The effects of 1227, PBTCA and HEDP on biological activity (dehydrogenase) of sulfate-reducing bacteria in power plant circulating cooling system were studied by biochemical and electrochemical techniques. At the same time, the effects of SRB on corroison behavior of SRB for 316L stainless steel were studied. The results show that adding 1227 could inhibit microbial growth and alleviate some corrosion; adding PBTCA or HEDP could increase the content of SRB dehydrogenase, alleviate the microbial corrosion of 316L stainless steel. And inhibition effect of PBTCA was better than that of HEDP.