TY - JOUR ID - 67886 TI - STUDIES ON THE WASTEWATER TREATMENT USING MODIFIED DOWN FLOW HANGING SPONGE (DHS) PILOT AND ITS APPLICATION JO - Al-Azhar Bulletin of Science JA - ABSB LA - en SN - 1110-2535 AU - Wasel, M . A. AU - Farg, R . S. AU - El - Tabl, A . S. AU - Mahmoud, A . M. AU - Radwan, A . M. AU - Sarhan, K . S. AU - Ezzat, A . AD - Chemistry D epartment, Faculty of Scien ce ,Al - Azhar University , Cairo, Egypt AD - Chemistry D epartment, Faculty of Scien ce ,Al - Azhar University , Cairo, Egypt. AD - Chemistry D epartment, Faculty of Science, Menoufia University , Menoufia , Egypt AD - Sector Head of Laboratories in Qaluobia , Company for Water and Wastewater Y1 - 2019 PY - 2019 VL - 30 IS - Issue 1-A (Chemistry) SP - 9 EP - 20 KW - DHS reactor KW - chelator KW - heavy metal KW - fecal coliforms DO - 10.21608/absb.2019.67886 N2 - In this paper the Modified Down Flow Hanging Sponge (DHS) reactor will be a good water treatment technology in the near future. It was used for excellent removal of notorious heavy metals, organic pollutants and harmful microbes. The reactor has advantages like low cost, ease of use and satisfaction level. In order to achieve these objectives, treatment scheme has been investigated. It consists of mixing a chelator with wastewater in different concentrations followed by a Down flow hanging sponge (DHS) reactor. The residual values of heavy metals are (Mn)amount decreases from 1 ppm to zero ppm (100%) after 60 min.,(Fe)decreases from 0.997 ppm to zero ppm (100%) after 60 min. (Cd) decreases from 0.901 ppm to zero ppm (100%) after 60 min. (Cu)decreases from 1.1 ppm to zero ppm (100%) after 60 min. (Pb)decreases from 1.004 ppm to zero ppm (100%) after 60 min. (Ni)decreases from 0.922 ppm to 0 ppm (100%) after 60 min. The results show that removals of fecal coliforms were achieved. From the results of DHS effluent, fecal coliforms decreased from 5.2x106 to 200 and the overall removal efficiency of fecal coliforms is (99.99%) at 37Co. UR - https://absb.journals.ekb.eg/article_67886.html L1 - https://absb.journals.ekb.eg/article_67886_350791817c90722a762267cc55e8e33a.pdf ER -