{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T15:24:41Z","timestamp":1787066681244,"version":"build-2736575974"},"reference-count":19,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2019,2,21]],"date-time":"2019-02-21T00:00:00Z","timestamp":1550707200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Kennebunk Sewer District"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Water Environment Research"],"published-print":{"date-parts":[[2019,6]]},"abstract":"Abstract<\/jats:title>\n \n \n \n The Kennebunk Sewer District collection system experienced H\n 2<\/jats:sub>\n S\u2010induced corrosion downstream of terminus manholes for the Wells Road and Boothby Road pumping stations. An automated odor control system using sodium hydroxide (Na\n OH<\/jats:styled-content>\n ) was developed to mitigate further corrosion. System performance was quantified by recording the [H\n 2<\/jats:sub>\n S] in the terminus manholes before and after Na\n OH<\/jats:styled-content>\n treatment. Preliminary evaluation at the Wells Road facility demonstrated significant (\n p<\/jats:italic>\n \u00a0<\u00a00.001) reduction in the average [H\n 2<\/jats:sub>\n S] between the treatment (4.8\u00a0\u00b1\u00a00.3\u00a0ppm) and control (67\u00a0\u00b1\u00a01.5\u00a0ppm). Permanent systems installed at both facilities in 2017 yielded similar positive results. The average [H\n 2<\/jats:sub>\n S] in the Wells and Boothby Road terminus manholes reduced from 89.4\u00a0\u00b1\u00a01.0 to 8.0\u00a0\u00b1\u00a00.1\u00a0ppm and from 7.9\u00a0\u00b1\u00a00.2 to 0.82\u00a0\u00b1\u00a00.06\u00a0ppm, respectively. This\u00a0work demonstrates the ability of the Na\n OH<\/jats:styled-content>\n system presented here to minimize emission of corrosive H\n 2<\/jats:sub>\n S gas in small collection systems.\n <\/jats:p>\n <\/jats:sec>\n \n Practitioner points<\/jats:title>\n \n \n \n \n Biologically\u2010produced hydrogen sulfide (H\n 2<\/jats:sub>\n S) gas corrodes sewer collection system components and results in premature asset failure.\n <\/jats:p>\n <\/jats:list-item>\n \n \n Maintaining wastewater pH above 8.5 by injecting sodium hydroxide (NaOH) minimizes H\n 2<\/jats:sub>\n S emission by shifting the molar distribution of sulfur species and partially inhibiting the anaerobes that produce H\n 2<\/jats:sub>\n S.\n <\/jats:p>\n <\/jats:list-item>\n \n The practical application of this approach may be limited to small wastewater collection systems.<\/jats:p>\n <\/jats:list-item>\n <\/jats:list>\n <\/jats:p>\n 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