This paper reported the pollutant removal performances of a hybrid wetland system for the treatment of aquaculture wastewater. The system consisted of two treatment stages: a subsurface vertical flow (VF) wetland, followed by a horizontal flow (HF). The aquaculture wastewater with the different concentrations such as eutrophy and mesotrophy was treated using hybrid constructed wetland. The expe...

In many regions of the world, urban water systems will need to transition into fundamentally different forms to address current stressors and meet impending challenges-faster innovation will need to be part of these transitions. To assess the innovation deficit in urban water organizations and to identify means for supporting innovation, we surveyed wastewater utility managers in California. Ou...

Several photocatalytic nanoparticles are synthesized and studied for potential application for the degradation of organic and biological wastes. Although these materials degrade organic compounds by advance oxidation process, the exact mechanisms of microbial decontamination remains partially known. Understanding the real mechanisms of these materials for microbial cell death and growth inhibit...

background today, despite the efforts of the medical community and healthcare staff along with the advancements in medical technology, patients’ dissatisfaction and complaints have been increased. the present study aimed at making a survey on the patients’ complaints in a large training hospital affiliated to mashhad university of medical sciences (mums).   methods this descriptive, cross-secti...

background: a new kind of leadership, called spiritual leadership, emphasizes on serving to others, general attitude toward work, personal development, and collaborative decision making. spiritual leadership has been developed based on the philosophy of servant leadership and includes staff participation and empowerment. this research aimed to survey the relationship between spiritual leadershi...

In 1996, the Western Lake Superior Sanitary District initiated a Zero Discharge Project to work toward the goal of zero discharge of persistent toxic substances from its wastewater treatment plant. This multifaceted project focuses on mercury, lead, dioxin, polychlorinated biphenyls, and hexachlorbenzene. Here, the author describes a collaboration with local hospitals to eliminate the use of me...

introduction: we can facilitate hospital management and prevent organizational crises by applying quality management principles. gharazi hospital in isfahan set up a quality management system in 1380 and in 1381 received iso 9001 , 2000 certificates. this study compared the quality management principles and the quality management system established in this hospital. methods: it is a cross-secti...

one of the most important stages in sugar industry that making wastewater and contamination is the water obtained to washing of co2 in mazoot furnace and related pumps. amount of water consumption in this stage is about 30 to 35 percent of weight of sugar beet, so amount of this stream is considerable. mixing of carbon black and water compose the colloid in liquid phase. these colloids do not s...

Abstract This paper presents the results of flowing water characteristics from sanitation system studied in targeted hospitals city Basra, Iraq, four sites 1 st December 2021 to March 2022, including two major for government and main private hospitals. Statistical analysis a set physicochemical quality parameters collected directly before mixing with public sewage was conducted investigate effi...

  Current World Health Organization and Centers for Disease Control and Prevention guidance for the disposal of liquid waste from patients undergoing treatment for Ebola virus disease at hospitals in the U.S. is to manage patient excreta as ordinary wastewater without pretreatment. The potential for Ebolavirus transmission via liquid waste discharged into the wastewater environment is currently...