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Articles by Basim K. Nile
Total Records ( 2 ) for Basim K. Nile
  Basim K. Nile and Ahmed M. Faris
  The process of biodegradation by activated sludge for wastewater treatment plants in operation is a common matter, especially when the appropriate conditions are available. Such conditions can include the process of sludge transportation and ease of sludge transfer; The addition of the sludgeis also easy to control. Herein we present one example where in sludge was brought to Mahram Aisha treatment plant in Iraq from another plant during the beginning of its operation. In this case, sludge was brought from another plant due to the increased velocity of the MLSS concentration. Indeed, on the 1st and 2nd days, during the addition of 20 m3 of the wet sludge, the sludge concentration ratios reached 550 mg. This method of adding the sludge is the best efficient method in terms of the speed of getting to the required determinants after controlling DO concentrations in the aeration basin. These concentrations were 2 mg/L during the periods of operation and the temperature remained at 25°C. After the stability of the return sludge, the concentrations of MLSS were compared with COD, phosphorus, froth and SVI by controlling the returning sludge while taking into account the influence of the returning sludge on the COD concentration, phosphorus and on the indicator of SVI and froth where the phosphorus removal efficiency is 50% without the EBPR system. At the same quantity, 95% of COD was removed. The quantity of SVI is 60 mL/g and there was a 99% reduction in the froth quantity.
  Ali N. Ghulam , Basim K. Nile and Jabbar H. Al-Baidhani
  Defective sewer pipes allow water and soil in the vicinity to drain into the pipe through defects. This eventually leads to sinkhole accidents. Such accidents have been reported around the world and cause economic losses and present a threat to human life. Many factors affect the state of soil erosion around defective sewer pipes, leak size is one of the most important of these factors. The present study studied the effects of leak width on soil erosion using local sandy soil and subbase type (D) which is a sewer pipe embedment material according to Iraqi specifications. Model tests were conducted with different leak widths of the following measurements: 3-7 mm where the experimental model involved soil exposed to cyclic water flow through leaks located at the bottom of the model. Eroded soil is collected, dried, weighted and sieved for each cycle. From the results, it was found that the leak width as well as the soil particle size both have significant effects on the amount of soil discharging into the sewer pipe where the amount of soil entering the sewer pipe through the leak is inversely proportional to the ratio of soil particle size to leak width.
 
 
 
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