Abstract:
About one-fifth of people on earth lack the access to safe drinking water, a condition that resulted in the death of 2.2 million people in 2004, as per the records of United Nations. Clean water use being a prime concern in many communities of developing countries. Contaminated water plays significant role in taking numerous lives in these localities, for which a number of efforts are being made for accessing safe purified drinking water. Fortunately, efficient and cheap water purification systems are being utilized and being tried to be accessed worldwide for easy access to clean water.
In the following project we have tried to develop a “Fabrication of A Waste Water Treatment Plant” using the basic ideas of Slow Sand Filter, some locally available filter material like sand, bone char, crashed stone, modified sand, clay, ziolite and try to improve the methodology using Activated Carbon Filter and Micro filter mechanism. Main focus was removal of iron from surface water or waste water in industries by adsorption and oxidation followed by precipitation technique. Among all the adsorption media used, modified sand proved to be a good adsorbent in removal of iron and other particle.
Three in number stainless steel tank with locally collected sand and crashed stone was prepared which also proved to be effective for removal of turbidity, but may be due to rigorous use of the filter or any manufacturing defect, there were cracks developed on its surface So we need to be very careful while using this plant.
Description:
We are thankful to Almighty Allah for his blessings for the successful completion of our thesis. Our heartiest gratitude, profound indebtedness and deep respect go to our supervisor, Brig Gen Md Lutfor Rahman Head of the Department, Mechanical Engineering Dept. MIST, for his constant supervision, affectionate guidance and great encouragement and motivation. His keen interest on the topic and valuable advices throughout the study was of great help in completing thesis.
We are especially grateful to the Department of Mechanical Engineering (ME) of Military Institute of Science and Technology (MIST) for providing their all out support during the thesis work.
Finally, we would like to thank our families and our course mates for their appreciable assistance, patience and suggestions during the course of our thesis.
