Document Type : review paper
Authors
University of Birjand
Abstract
The chemical and microbiological quality of Birjand's underground water sources are lower than the desirable range of water quality indicators due to the geological structure of the area, the high thickness of the alluvial deposits on which the city is located, and the continuous and increasing harvesting of these sources as a result of population growth. In this research, along with the introduction of the Birjand Drinking Water Refinery, an economic analysis is presented regarding the initial capital of construction and monthly maintenance and management of this refinery. The raw water entering the Birjand refinery, which is supplied from underground water sources, has an excess amount of chromium, hardness, and salinity. In the design of the refinery process, two main methods of hardness removal via reactor pellet and filter membrane using Nano-filter and reverse osmosis techniques were used to simultaneously remove sulfate and heavy metals, convert chromium VI to III, and eliminate the possible contaminations. Using the water reactor pellet technology reduces the purification effluent from 160 to 50 liters per second, which is a unique difference between the Birjand refinery and other refineries.
Keywords
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