Open Access Library Journal 2020, Volume 7, e6141 ISSN Online: 2333-9721 ISSN Print: 2333-9705 DOI: 10.4236/oalib.1106141 Feb. 26, 2020 1 Open Access Library Journal Domestic Wastewater Treatment: Difficulties and Reasons, and Prospective Solutions—China as an Example Djamel Ghernaout 1,2* , Noureddine Elboughdiri 1,3 1 Chemical Engineering Department, College of Engineering, University of Ha’il, Ha’il, Saudi Arabia 2 Chemical Engineering Department, Faculty of Engineering, University of Blida, Blida, Algeria 3 Département de Génie Chimique de Procédés, Laboratoire Modélisation, Analyse, et Commande des systèmes, Ecole Nationale d’Ingénieurs de Gabès (ENIG), Gabès, Tunisia Abstract During the last three decades, China has attained noteworthy advances in municipal sanitation. The country has constructed a highly large infrastruc- ture for treating wastewater, with 94.5% treatment coverage in urban areas and legally mandated nation-wide full nutrient removal applied. Nevertheless, domestic wastewater treatment plants (WWTPs) are yet defied with problems rooted in the singular sewage properties. Recently, Cao et al. [1] compared energy recovery, price of nutrient reduction and sludge formation among Chinese urban WWTPs and those in nations with longer wastewater treat- ment traditions, and underlined the cause-effect relationships among Chinese sewage properties—high inorganic suspended solids (ISS) loads, and low COD and C/N ratio, and municipal WWTP process performance in China. Combined design and running guidelines for domestic WWTPs are crucial in relation to the singular sewage properties in China. Cost-efficient actions and solutions are suggested by Cao et al. [1], and the likely advantages of enhanc- ing the sustainability of urban WWTPs in China are evaluated. Subject Areas Environmental Sciences Keywords Wastewater Treatment, Wastewater Treatment Plants (WWTPs), Inorganic Suspended Solids (ISS), Volatile Suspended Solids (VSS), Anaerobic Digestion (AD) How to cite this paper: Ghernaout, D. and Elboughdiri, N. (2020) Domestic Wastewater Treatment: Difficulties and Reasons, and Prospective Solutions—China as an Example. Open Access Library Journal, 7: e6141. https://doi.org/10.4236/oalib.1106141 Received: February 5, 2020 Accepted: February 23, 2020 Published: February 26, 2020 Copyright © 2020 by author(s) and Open Access Library Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access