Abstract
This work investigated the characteristic of natural organic matters in the raw drinking water River Nile and their relation to the formation of Disinfection by-products (DBPs). Fractionation of dissolved organic carbon (DOC) content in river Nile to hydrophilic, transphilic and hydrophobic was carried out to assess the
contribution of each fraction in forming THMs and HAAs. It was found that the DOC has high potentiality to form hazardous by-products such as trihalomethanes (THMs) and haloacetic acids (HAAs) during the chlorination process. The formation of these by-products is controlled mainly by operating factors like Cl2 dosage, total organic carbon (TOC), pH, temperature of the water body and the contact time with Cl2. So, the effect of all of these parameters were investigated in this study in addition to THMFP and HAAFP. The batch experiments showed that increasing Cl2 dosage leading to increasing in the formation of THMs and HAAs. Same trend was observed for the contact time and initial TOC concentration.pH 7.5 was recognized as the optimum value for formation of THMs and HAAs. We found that from fractionation experiments that
hydrophilic fraction is the major fraction in River Nile surface water and has the highest probability for the formation of THMs and HAAs.
contribution of each fraction in forming THMs and HAAs. It was found that the DOC has high potentiality to form hazardous by-products such as trihalomethanes (THMs) and haloacetic acids (HAAs) during the chlorination process. The formation of these by-products is controlled mainly by operating factors like Cl2 dosage, total organic carbon (TOC), pH, temperature of the water body and the contact time with Cl2. So, the effect of all of these parameters were investigated in this study in addition to THMFP and HAAFP. The batch experiments showed that increasing Cl2 dosage leading to increasing in the formation of THMs and HAAs. Same trend was observed for the contact time and initial TOC concentration.pH 7.5 was recognized as the optimum value for formation of THMs and HAAs. We found that from fractionation experiments that
hydrophilic fraction is the major fraction in River Nile surface water and has the highest probability for the formation of THMs and HAAs.
| Original language | English |
|---|---|
| Pages (from-to) | 2394-2403 |
| Number of pages | 10 |
| Journal | Journal of Applied Sciences Research |
| Volume | 9 |
| Issue number | 3 |
| Publication status | Published - 2013 |
Keywords
- THMs
- HAAs
- Fractionation
- DOC
- DBPs
- Trihalomethane formation potential (THMFP)
- Haloaceticacid formation potential(HAAFP)
