en School Health School Health پژوهشي Research <span style="font-size:9pt"><span minion="" pro="" style="font-family:"><b>Introduction</b>: Pharmaceutical materials and antibiotics are a part of emerging pollutants in aqueous environments, which threaten human and environmental health at low environmental concentrations. Amoxicillin is a most-used antibiotic in the treatment of infections most of which is disposed as non- metabolized, then enters into wastewater and finally come into the environment.</span></span><br> <span style="font-size:9pt"><span minion="" pro="" style="font-family:"><b>Materials & Methods</b><b><span style="font-size:11.0pt"><span new="" roman="" style="font-family:" times="">: </span></span></b>Present study was conducted with the aim of investigating the process of cyclic activated sludge with moving bed in removing amoxicillin from aqueous environments. Following preparing amoxicillin and other chemical compounds in this experimental study, first required reactor at pilot scale with volume of about 100 L was designed, prepared, equipped and sealed. Then prepared system was transferred to urban wastewater treatment plant and installed there.<span lang="FA" dir="RTL" style="font-family:"Times New Roman",serif"></span></span></span><br> <span style="font-size:9pt"><span minion="" pro="" style="font-family:"><b>Results</b><b><span style="font-size:11.0pt"><span new="" roman="" style="font-family:" times="">: &nbsp;</span></span></b>Regarding low value of antibiotic in urban wastewater, after initial setting up, fixing possible defects and stability of reactor, amoxicillin was fed into the inlet wastewater by adding concentrations of 5, 10, 15 and 20 mg/L and then sampling, preparation, samples filtration and making required trials were done and subsequently concentration of amoxicillin was obtained through HPLC system. In order to analyze statistical data in Excel software, efficiency of the reactor of cyclic activated sludge with moving bed in removing amoxicillin from wastewater was evaluated. Based on the obtained results and the best operating conditions of the system, the highest rate of removing amoxicillin pollutant with inlet concentration of 5mg/L and 12 hours Hydraulic retention time of 94.3% were achieved.</span></span><br> <span style="font-size:9pt"><span minion="" pro="" style="font-family:"><b>Conclusion</b><b><span style="font-size:11.0pt"><span new="" roman="" style="font-family:" times="">: &nbsp;</span></span></b>Regarding suitable conditions of model in removing pharmaceutical pollutants and other organic materials, applying this method in designing and exploiting MBAS system was suggested.</span></span><br> <br> &nbsp; Amoxicillin, Antibiotic, Rotating Bed, Cyclic Activated Sludge 37 50 http://jhsp.medilam.ac.ir/browse.php?a_code=A-10-47-2&slc_lang=en&sid=1 Farough Kazembeigi fkazembeigi@gmail.com 1003194753284600274 1003194753284600274 Yes ilam university of medical sciences Gholamreza Nabi Bid Hendi 1003194753284600275 1003194753284600275 No ilam university of medical sciences Gholamreza Mousavi 1003194753284600276 1003194753284600276 No Nasser Mehrdadi 1003194753284600277 1003194753284600277 No