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From Water and Wastewater.com Industry News
Program Overview USAID's goal is to improve the efficiency and reliability of existing water and wastewater treatment facilities, especially those in the south where water quantity and quality are particularly low. An anticipated 11.8 million Iraqis will benefit from USAID?s $600 million in water and sanitation projects. HIGHLIGHTS THIS WEEK -Work has begun to expand and refurbish a water treatment plant in Karbala that has long experienced structural failures. Before the repairs began, compact water treatment units were installed nearby to allow continued water service while the rehabilitation moves forward. Repairing this plant is particularly important because, in addition to providing clean water to Karbala residents the plants supplies potable water to an estimated three million religious pilgrims to the Al-Hussein Shrine in Karbala each year. -Because of its high total suspended solids, the alum- and chlorine-dosing processes were overloaded and sand filter function was impaired. Besides producing a poor-quality, highly turbid water, suspended solids combined with chlorine thus reducing free chlorine available to disinfect the water. Marginal disinfection was effective with most bacteria, but hardened cysts of Giardi lamblia and Cryptosporidium survived disinfection. These pathogens cause amoebic dysentery, a public health risk exacerbated by Karbala’s seasonal three million-person pilgrimage. -Compact clarifier units will be installed adjacent to the existing clarifiers, allowing for rehabilitation of the existing plant. Each unit has a flow capacity of 400 cubic meters per hour. The existing inlet works and associated pump station will also be enlarged. Workers at the site are re-routing pipe, disassembling a pump at the low lift station, and compacting and placing concrete for equipment pads. This project is scheduled for completion in September 2005. -Work is continuing on the rehabilitation of Baghdad’s Rustimiyah wastewater treatment plant. The plant is one of three major wastewater treatment plants serving nearly 80 percent of the capital city’s residents. The three plants’ treatment capacity steadily eroded under years of neglect prior to liberation and was further impacted by looting after the 2003 conflict. Prior to the rehabilitation of one branch of the Kerkh treatment plant in June 2004, none of Baghdad’s sewage was being treated. -Recently, new electrical motors were installed in Stage 1 aeration tanks and tests were completed on the Stage 2 sludge return pumps at the Rustimiyah plant. In addition, knife valves and actuators were installed at the Stage 2 pump station and submersible pumps and penstocks were installed in distribution chambers. When finished in March 2005, this and the two other Baghdad sewage treatment plants will help to safeguard public health and protect the Tigris River from further contamination by raw sewage Source: USAID, http://www.usaid.gov/ © Copyright 1998 - 2008 Water and Wastewater.com |
