Model Berkurangnya Klorin (Chlorine Decay) Pada Jaringan Air Bersih Dalam Pipa
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2007
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/25699/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=8699 |
Daftar Isi:
- Abstract Along the distribution main, water quality may be degrading due to temperature, contact with pipe wall, external contaminant etc. Therefore, although the quality of water has been assured in the Water Treatment Plant (WTP), continuous assurance is required along the pipe. Chlorine (Clz) is commonly usedfor water disinfectant. Along the pipe residual active chlorine provide assurance that the water is free from undesirable pathogenic microorganism. However, Cl2 decay along the pipeline due to interaction with surrounding (substance within the water and the pipe wall). Hence, monitoring is necessary to assure enough chlorine in the water. At least there are two water quality model namely DVEM (Discrete Volume Element Method) and Lagrangian method that are used in many available software in the market. The Lagrangian method is said to be superior to the DVEM although it has some weakness especially when the traveling distance of the water(s) is considerably less than the element size (L). In this paper Lagrangian method is developed. The program is calibrated to simulate simple transmission system transmitting water containing certain amount of chlorine. The systems were constructed both mathematically and physically. The chlorine residual the down stream end of the transmission systems were recorded after certain time steps. Various slL were used to study the performance of the model. Analytical solutions were carried out to assured that the numerical approach is consistent to the mathematical formulation. The calibration indicates that the program has been able to simulate the chlorine decay through the pipe. The weakness of the method was found during small slL where the result of the simulation fluctuates. The relative fluctuations are small and negligible as slL close to or higher than unity. Even in small slL value the absolute amplitude of the fluctuation may be ignored. The numerical approach was shown to be in good agreement with the analytical one. It was found that in normal condition, Kb value for clean water in Gadjah Mada University Campus is small but significant for accurate simulation. Keywords: water, quality, chlorine, WTP, DVEM