کارايي راکتورهاي کرمي در کاهش حجم لجن توليدي در سيستم‌هاي لجن فعال
Journal Title: آب و فاضلاب - Year 2016, Vol 27, Issue 6
Abstract
Efficiency of Worm Reactors in Reducing Sludge Volume in Activated Sludge Systems The activated sludge process is the most widely used on a global scale for the biological treatment of both domestic and industrial effluents. One problem associated with the process, however, is the high volume of sludge produced. Excess sludge treatment and disposal account for up to 60% of the total operating costs of urban wastewater treatment plants due to the stringent environmental regulations on excess sludge disposal. These strict requirements have encouraged a growing interest over the last few years in reducing sludge volumes produced at biological treatment plants and a number of physical, chemical, and mechanical methods have been accordingly developed for this purpose. The proposed methods are disadvantaged due to their rather high investment and operation costs. An alternative technology that avoids many of these limitations is the worm reactor. In this study, the characteristics of this technology are investigated while the related literature is reviewed to derive the optimal conditions for the operation of this process in different situations.
Authors and Affiliations
Azam Naderi, Mahdi Farzadkia
Keywords
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