Using Technical and Financial Review and AHP Method to Find the Best Method of the Chlorine-Based Disinfection

Document Type : Original Article

Authors

1 mechanical engineer in toossab consulting engineers

2 Project Manager.

Abstract

In this paper, research on six chlorine-based methods, which is one of the most widely used and effective methods of disinfection, is carried out, the advantages and disadvantages and their comparisons have been investigated.Also provided by Excel, computational software, Which will detail the cost of disinfection in stages for up to five years.The goal is to reach the best of the economic and technical landscape Which is a concern of many consultants and operators.In order to achieve this, nine criteria must be valued, by collecting questionnaires and collecting 34 questionnaires from experts in water, water supply and disinfection systems,Obtain important decision criteriaAnd by way of comparison with the help of software AHP and Expert choice .In order of preference by electrolysis of sodium chloride (Multi-oxidant), bleach(Sodium hypochlorite as a disinfectant) and hypochlorinator (Calcium hypochlorite) as best practices from the six of the most effective methods that are chlorine-based disinfection methods achieved.

Keywords


 
سازمان مدیریت و برنامه ریزی کشور، (1393)، "دستورالعمل احداث سامانه‏ های کلرزنی در تصفیه‏خانه‏ های آب و تصفیه ‏خانه‏ های فاضلاب"، نشریه 673، سازمان مدیریت و برنامه ریزی کشور، تهران، ایران.
منزوی، م.ت.، (1379)، جمع‏آوری فاضلاب، انتشارات دانشگاه تهران، تهران، ایران.
موسسه استاندارد و تحقیقات  صنعتی ایران، (1386)، ویژگیهای میکروبیولوژیکی آب آشامیدنی، استاندارد 1011، ویرایش ششم، تهران، ایران.
موسسه استاندارد و تحقیقات  صنعتی ایران، (1386)، ویژگیهای فیزیکی و شیمیایی آب آشامیدنی، استاندارد 1053، ویرایش پنجم، تهران، ایران.
American Water Works Association (AWWA), (2006), Water chlorination and chloramination practices and principles, M20, Second Edition, AWWA, USA.
Black and Veatch Corporation, (2010), White's handbook of chlorination and alternative disinfectants, Fifth Edition, John Wiley & Sons, Inc., Hoboken, New Jersey, USA.
Singer, P., (1999), Formation and control of disinfection by-products in drinking water, AWWA, USA.
Ede, A., (2006), The chemical element: a historical perspective, Greenwood Press, USA.
Saaty, T.L., (1980), The analytic hierarchy process, McGraw Hill International, New York, USA.
WHO, (2016), “Deaths attributable to unhealthy environments”, Visited 15 March 2016, http://www.who.int/mediacentre/news/releases/2016/deaths-attributable-to-unhealthy-environments/en/