Abstract
The use of a sacrificial concrete sewer for controlling sulphide-related odour downstream of a pressure sewer was investigated in this study. The investigated sewer is located in a rural catchment and is intended to alleviate odour problems downstream of a small diameter pressure sewer with extended retention time. For the purpose of the study, a 50-m long sacrificial concrete gravity sewer was constructed using a high alkalinity concrete pipe. The monitoring campaign reported in this paper covers the first 9 months of operation. The results clearly demonstrate the ability of the system to reduce hydrogen sulphide gas (H2S (g)) concentrations in the sewer headspace. After being in operation for approximately half a year, the system was able to maintain average H2S (g) levels of less than 1 ppmv at the downstream end, which is the first place air can escape. The daily maximum H2S (g) levels (95 percentile) were reduced from several hundred ppmv in the discharge manhole to approximately 10 ppmv at the downstream end. Thus, the odour potential has been significantly reduced. A visual inspection of the system revealed that even after 9 months of operation not all of the concrete surfaces were corroding. The removal efficiency is therefore expected to increase further.
Originalsprog | Engelsk |
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Titel | Proceedings of the 13th International Conference on Urban Drainage |
Antal sider | 8 |
Udgivelsessted | Sarawak, Malaysia |
Forlag | The International Conference on Urban Drainage |
Publikationsdato | 2014 |
Status | Udgivet - 2014 |
Begivenhed | The International Conference on Urban Drainage - Borneo Convention Centre Kuching (BCCK), Sarawak, Malaysian Borneo, Kuching, Malaysia Varighed: 7 sep. 2014 → 12 sep. 2014 Konferencens nummer: 13 |
Konference
Konference | The International Conference on Urban Drainage |
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Nummer | 13 |
Lokation | Borneo Convention Centre Kuching (BCCK), Sarawak, Malaysian Borneo |
Land/Område | Malaysia |
By | Kuching |
Periode | 07/09/2014 → 12/09/2014 |
Bibliografisk note
Proceedings published on a usb.Emneord
- Concrete corrosion
- Odour
- Sewer