کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5740337 1616293 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of a combined treatment to control gaseous phase H2S in sewer
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
پیش نمایش صفحه اول مقاله
Evaluation of a combined treatment to control gaseous phase H2S in sewer
چکیده انگلیسی


- Designed laboratory scale reactor system simulated the actual sewer system well.
- Sulphate Reducing Bacteria (SRB) biofilm was grown on top of the concrete surface.
- The combination of pH control and ferrous chloride dosing was better than one alone.
- Measured and theoretical H2S (g) concentration were significantly different at pH > 8.

Hydrogen sulphide (H2S) generation in sewer systems is a serious problem. A cost effective means of controlling sewer corrosion has been tested in a laboratory scale sewer model which includes a concrete surface. Traditionally two most practised methods are pH adjusted to >10.5 and ferrous chloride addition at [Fe2+]: [S2−] of 1-1.3:1. When the combined methods were tested in a laboratory scale sewer system, the amount of ferrous chloride required was only at [Fe2+]: [S2−] of 0.1:1 and pH∼8. Further experiments confirmed some oxygen in the water/air space is necessary to achieve an efficient reduction, but the oxygen present in the water (∼1 mg/L) of gravity sewer was found sufficient. This provides a cost-effective means of H2S reduction in the gaseous phase, although testing with real sewer is needed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 124, October 2017, Pages 206-214
نویسندگان
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