03171nam a2200409 4500 20260818095312.0 011298s1987 th r 0000|00eng d .b10691510 AIT Thesis no. EV-87-27 Sritharan, Manickanadarasa The effects of powdered activated carbon addition on heavy metal inhibition in activated sludge system Bangkok : Asian Institute of Technology, 1987 47 p. Thesis ; no. EV-87-27 A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1987 Laboratory scale batch and continuous-flow experiments were conducted on synthetic feed in order to find the effects of powdered activated carbon(PAC) addition to activated sludge system in the presence of mercury. The batch test results revealed that mercury (Hg++) concentrations of more than 2.5 mg/l were inhibitory to the microbial population and addition of PAC at 300 mg/l concentration could reduce the toxic effect and enhance organic removal from 50 % to 75 % when the Hg++ concentration was 5.0 mg/l. However, in the continuous-flow experiment at 5 mg/l Hg+concentration inhibitory effect was not pronounced and addition of PAC upto 1000 mg/l did not improve process performance in terms of organic removal. PAC addition also was not effective in improving the sludge settleability and was not able to prevent bulking of sludge in continuous-flow activated sludge process . However it can be useful to overcome shock loading effects due to heavy metal. The sludge growth parameters and kinetic constant of biological oxidation were determined for the reactors with 100, 500 and 1000 mg/l PAC and without PAC in the presence of 5. 0 mg/l Hg++ and are discussed here. Sewage Purification Activated sludge process Shin, Hang-Sik, Chairperson Hanaki, K., Examination Committee Orth, Hermann M., Examination Committee The Government of The Federal Republic of Germany (DAAD), Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-87-27 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B19250 .b10691510 mnait x 240402 2 951012 m a x 4 mnait mnait mnarc 20 40 Barcode : 30050003044061 CREATED : 1994-05-19 RECORD # : i10888834 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003044079 CREATED : 1994-05-19 RECORD # : i10888846 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120223689 CREATED : 2016-10-05 RECORD # : i12973312 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 35296 35296 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV-87-27 30050003044061 2026-08-18 09:53:12 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV-87-27 30050003044079 2026-08-18 09:53:12 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. EV-87-27 30050120223689 2026-08-18 09:53:12 2026-08-18 40