TY - JOUR ID - 99208 TI - Upgrading of Tafresh municipal wastewater treatment plant (TMWTP) using the Modified Ludzack-Ettinger (MLE) process JO - Journal of Advances in Environmental Health Research JA - JAEHR LA - en SN - 2676-3478 AU - Turkan, Mohammad Reza AU - Saeidijam, Saeid AU - Reyahi Khoram, Mahdi AD - Department of Civil Engineering, University College of Omran-Toseeh, Hamedan, Iran AD - Department of Civil Engineering, Islamic Azad University, Hamedan Branch, Iran AD - Department of Environmental Science, Islamic Azad University, Hamedan Branch, Iran Y1 - 2019 PY - 2019 VL - 7 IS - 4 SP - 241 EP - 248 KW - Activated sludge KW - Tafresh city KW - Treatment Plant KW - Wastewater DO - 10.22102/jaehr.2019.185631.1134 N2 - The present study aimed to evaluate the treatment efficiency of the modified Ludzack-Ettinger (MLE) process using the conventional activated sludge (CAS) in Tafresh city, located in Iran during October-December 2016 (before upgrading) and October-December 2017 (after upgrading to the MLE process). The measured parameters in the study included chemical oxygen demand (COD), five-day biochemical oxygen demand (BOD5), nitrate-nitrogen, total suspended solids, phosphate, dissolved oxygen, ammonium-nitrogen, and pH. According to the obtained results, the treatment efficiency of the MLE process based on the BOD5 and COD was 92.11% and 91.20%, respectively. On the other hand, the treatment efficiency of the CAS process (before upgrading) based on the BOD5 and COD removal was 48.55% and 56.76%, respectively. Therefore, it could be concluded that the MLE process was able to successfully upgrade wastewater treatment services. UR - https://jaehr.muk.ac.ir/article_99208.html L1 - https://jaehr.muk.ac.ir/article_99208_b7e3aceeb6b22b53537b6bc86b0a6ef6.pdf ER -