{'fraction_non_alphanumeric': 0.01643598615916955, 'fraction_numerical': 0.004325259515570935, 'mean_word_length': 5.392265193370166, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Effectiveness of membrane bioreactor/reverse osmosis hybrid process for advanced purification of landfill leachate

The purpose of this article is to develop an effective hybrid method for treating Oum Azza landfill leachate (Rabat, Morocco). The treatment system studied is membrane bioreactor technology (MBR) which consists of biological treatment associated with a unit of ultrafiltration for the retention of the biomass followed by a reverse osmosis (RO) filtration step in order to achieve the Moroccan discharge limits. The performances of RO on the advanced treatment efficiency are investigated in tube pressure configuration mode, in order to achieve high quality of permeate with higher recovery rate and minimization of brine discharges. At the end of this study, it can be concluded that the performance of the MBR can achieve the reduction in 5-day biochemical oxygen demand and chemical oxygen demand of the order of 87% and 76% respectively. The permeate analysis at the outlet reverse osmosis shows that the controlled parameters are below legal standards Moroccan of direct discharge in nature, especially total dissolved solids content.