Abstract
Natural Organic Matter (NOM) is found in all surface waters. An increase in the amount of NOM over the past 10-20 years has been observed in raw water supply in many areas in Egypt, which has had a significant impact on drinking water treatment. Water scarcity and the increased contamination of drinking water has led to increased doses of coagulants and disinfectants used in water treatment, which has led to increased sludge volume and the production of harmful residual byproducts. In this paper, the results of experiments using an experimental model carried out to investigate improving the removal efficacy of NOM using a natural coagulant, such as chitosan, along with alum, are presented. The results show the use of chitosan is effective in removing NOM and reducing algae and turbidity. In addition, a dose of chitosan added to alum successfully reduced the amount of alum needed in the purification process.
Highlights
Water pollution is one of the greatest concerns in developed and underdeveloped countries
Many pollutants can be found in surface water streams, one of them is the natural organic matter (NOM) [7], [8]
When chitosan is dissolved in acetate solution, it loses 2% of its Experimental work was executed in the National Research Center
Summary
Water pollution is one of the greatest concerns in developed and underdeveloped countries. The substantial pollution of water bodies is standard of developing countries affected by the maximum serious effects of this resource degradation, the spreading of water-related illnesses [1], [2]. Waterborne illnesses that launch parasitic and diseased microorganisms into water bodies are a result of the lack of expertise and resources to build and maintain a healthy sanitation apparatus [3], [4]. In 2017, about 2.72 billion and 2.38 billion rural residents were still lacking basic drinking water and sanitation services (UNICEF and WHO, 2020) [5]. Many pollutants can be found in surface water streams, one of them is the natural organic matter (NOM) [7], [8]
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