Open AccessInvestigation of chlorine decay of water resource in khanbebein city, Golestan, Iran
Author(s) -
Khaled Rahmani,
Seyed Mohammad Reza Seyed Khademi,
Ayat Rahmani,
Kazem Godini,
Yousuf Dadban Shahamat
Publication year - 2013
Publication title -
international journal of environmental health engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-9183
DOI - 10.4103/2277-9183.110137
Subject(s) - chlorine , chemistry , alkalinity , nitrite , ammonia , aeration , environmental chemistry , wastewater , chloramine , nitrate , water treatment , inorganic chemistry , chlorate , environmental engineering , environmental science , organic chemistry
Aims: The object of the study was to identify chlorine demand factorsin water and chlorine in Kanbebein City water and eliminating of them.Materials and Methods: Concentration of free and combined residual chlorine with the methods presented in the book "Standard Methods for Water and Wastewater Examination" were measured. Other parameters such as: Temperature, TOC, TDS, pH, EC, nitrate, ammonia, total hardness, alkalinity, iron and manganese were also examined before and after of chlorination.Results: The Highest chlorine decay constant in the short time were in water well was 0.895 mgL -1 h -1 and the least amount of it was 0.0097 mgL -1 h -1 and the Highest chlorine decay constant in the long time were in water well was-0.092Lmg -1 h -1 and the least amount of it was-0.0017 Lmg -1 h -1 that correlated with nitrite, ammonia and iron concentration.Conclusion: The factors that affected short-time chlorine decay constant (k 2 ) were nitrite, ammonia and iron and The factors that affected on long-time chlorine decay constant (k 2 ) were Nitrite, ammonia and iron. The material removal techniques for them were the use of natural resins, zeolite, ion exchange, membrane and aeration methods, oxidation and sedimentation, and filtration