SIMULATION STUDY OF WATER REUSE SYSTEM FOR A REGENERATIVE HOUSEBOAT BY EPANET

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Mohammad Ramezanianpour ◽  
Sally Kung
Keyword(s):  
Water Treatment ◽  
Simulation Study ◽  
Water Reuse ◽  
Real Life ◽  
Water System ◽  
Water Infrastructure ◽  
Case Scenario ◽  
Treatment Unit ◽  
Site Water ◽  
The Impact

Urbanization affluence, together with the impact of climate change, poses a significant threat to water resources. Future water crises must be solved in a sustainable manner. The aim of this research is to introduce a multi-demand water infrastructure for a regenerative houseboat. This research reflects a simulation study of four different greywater reusing scenarios. On-site water treatment units are selected as possible source-associated solutions for sustainability. The design for the multi-demand water system will be implemented into the houseboat structure located on the Kaiapoi River in New Zealand. The water infrastructure includes river water storage, roof catchment, and greywater and black water treatment units. The simulation for water infrastructure is created by EPANET under real-life conditions, using average household data for water consumption and wastewater discharge. The study uses the concept of reservoirs for water sources. The results from EPANET show that it is possible to simulate this infrastructure and provide a dynamic model for a real case scenario. It is explained that 12.1% of water is saved if toilet flushing alone uses treated greywater. If greywater is treated for reuse in the washing machine and shower, then 25.3% and 66.3% of water are saved, respectively. A portion of treated greywater can also be pumped to the water treatment unit for drinking purposes, thereby using zero water from a river source.

scholarly journals PENYEDIAAN AIR SIAP MINUM PADA SITUASI TANGGAP DARURAT BENCANA ALAM (Belajar Dari Kasus Gempa Bumi Yogyakarta Dan Jawa Tengah)

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Robertus Haryoto Indriatmoko ◽  
Wahyu Widayat
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Potable Water ◽  
High Mobility ◽  
Drinking Water Treatment ◽  
Treatment Unit ◽  
Treatment Processes ◽  
Disaster Area ◽  
The Impact ◽  
Potable Water Treatment

A response in an emergency condition  is the most critical thing in natural disaster. In this situation, every thing is in a panic. Any decision must be taken  tactically, quickly and property to minimize the number victims and severity as the impact of disaster. One of the response in an emergency is to provide facility of drinking water treatment unit which has to be located at the respective disaster area. This unit is designed compacly with high mobility, flexible and easily operated to fullfil the potable water need for the victims. The treatment processes use are filtration, adsorbtion and sterilization. The capacity is 1 M3/hour.      Katakunci : Tanggap darurat, air minum, ultra filtrasi,  bencana alam, mobilitas tinggi, tepat sasaran, emergency use, potable water treatment.

Studies on the magnetic water treatment in new pilot scale drinking water system and in old existing real-life water system

2016 ◽  
Vol 9 ◽  
pp. 215-224 ◽  
Author(s):  
Martti Latva ◽  
Jenni Inkinen ◽  
Jaakko Rämö ◽  
Tuija Kaunisto ◽  
Riika Mäkinen ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Real Life ◽  
Water System ◽  
Pilot Scale ◽  
Drinking Water System ◽  
Magnetic Water

scholarly journals A GHG Metric Methodology to Assess Onsite Buildings Non-Potable Water System for Outdoor Landscape Use

2020 ◽  
Vol 10 (4) ◽  
pp. 1339 ◽  
Author(s):  
Geraldine Seguela ◽  
John R. Littlewood ◽  
George Karani
Keyword(s):  
Water Conservation ◽  
Water Reuse ◽  
Potable Water ◽  
Ghg Emissions ◽  
Water System ◽  
Competent Authority ◽  
Recycled Water ◽  
Research Project ◽  
Operational Costs ◽  
The Impact

This paper documents a water:energy greenhouse gas (GHG) metric methodology for a decentralized non-potable water system that was developed as part of a Professional Doctorate in Engineering (DEng) research project by the first author. The project identified the need to investigate the challenges in changing the use of potable water to recycled water for landscape irrigation (LI) and for water features (WFs) at a medical facility case study (MFCS) in Abu Dhabi (AD) (the capital city of the United Arab Emirates (UAE). The drivers for the research project were based on the need for AD to decrease desalinated potable water as well as reduce the environmental impact and operational costs associated with the processing and use of desalinated water. Thus, the aim of the research discussed and presented in this paper was to measure the impact of using recycled and onsite non-potable water sources at the MFCS to alleviate the use of desalinated potable water and reduce associated energy consumption, operational costs, and GHG emissions (latterly in terms of carbon dioxide equivalent (CO2e), for LI and WFs. The analysis of three case scenarios at the MFCS compared different approaches to alleviate energy use, costs, and GHG impacts for the use of recycled water in LI and WFs against a baseline. The findings led to a proposed sustainable water conservation and reuse (SWC) strategy, which helped save 50% desalinated potable water for LI use by soil improvement, building water system audits, and alternate non-potable water reuse. The recommendations for this paper are to develop a SWC strategy forming the basis for a water protocol by the competent authority for regional medical facilities including an assessment methodology for building decentralized non-potable water systems to measure their energy, GHG emissions and financial impact.

scholarly journals #UsToo: implicit bias, meritocracy and the plight of black minority leaders in healthcare

BMJ Leader ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 101-103
Author(s):  
Jamiu O Busari
Keyword(s):  
Minority Groups ◽  
Implicit Bias ◽  
Healthcare Delivery ◽  
Real Life ◽  
Daily Basis ◽  
Case Scenario ◽  
Impact Performance ◽  
Racial Harassment ◽  
Clear Cut ◽  
The Impact

In the fall of 2017, the #MeToo movement ushered in one of the most astonishing revolts against the perils of workplace-related harassment. Several unsuccessful campaigns geared towards ending the harassment and subjugation of women in corporate organisations finally got a thrust that resulted in significant and far-reaching changes in many organisations. While the #MeToo movement highlighted the pains and struggles of gender inequality over the years, an unintended consequence has been the shadow it has cast over the plight of other minority groups facing harassment in the workplace. In several academic and healthcare (learning) environments, people of colour, like women, face explicit and implicit forms of harassment on a regular, if not daily basis. Unlike gender harassment, however, racial harassment affects both sexes with relatively more predominance among men. The effect of racial harassments does not just impact performance and self-confidence but also influences the opportunities available to black professionals to advance their academic and professional careers. In the academic and healthcare industries, the issue of how to tackle implicit bias and unfair practices is not clear-cut. While the subjugated feel the impact of bias, the perpetrators of the actions either lack the ability (or are unwilling) to acknowledge these biases. Furthermore, the complexities inherent to the different contexts make it problematic if not impossible, to call out racist behaviours. In this paper, a real-life case scenario is used to provide a scholarly analysis of the dynamics of racial harassment, implicit bias and the impact on minority leader roles in healthcare delivery.

scholarly journals Joint latent class model: Simulation study of model properties and application to amyotrophic lateral sclerosis disease

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Maéva Kyheng ◽  
Génia Babykina ◽  
Camille Ternynck ◽  
David Devos ◽  
Julien Labreuche ◽  
...  
Keyword(s):  
Simulation Study ◽  
Latent Class ◽  
Latent Class Model ◽  
Real Life ◽  
Finite Sample ◽  
Finite Sample Size ◽  
Marker Evolution ◽  
The Impact ◽  
Number Of Individuals ◽  
Event Occurrence

Abstract Background In many clinical applications, evolution of a longitudinal marker is censored by an event occurrence, and, symmetrically, event occurrence can be influenced by the longitudinal marker evolution. In such frameworks joint modeling is of high interest. The Joint Latent Class Model (JLCM) allows to stratify the population into groups (classes) of patients that are homogeneous both with respect to the evolution of a longitudinal marker and to the occurrence of an event; this model is widely employed in real-life applications. However, the finite sample-size properties of this model remain poorly explored. Methods In the present paper, a simulation study is carried out to assess the impact of the number of individuals, of the censoring rate and of the degree of class separation on the finite sample size properties of the JLCM. A real-life application from the neurology domain is also presented. This study assesses the precision of class membership prediction and the impact of covariates omission on the model parameter estimates. Results Simulation study reveals some departures from normality of the model for survival sub-model parameters. The censoring rate and the number of individuals impact the relative bias of parameters, especially when the classes are weakly distinguished. In real-data application the observed heterogeneity on individual profiles in terms of a longitudinal marker evolution and of the event occurrence remains after adjusting to clinically relevant and available covariates; Conclusion The JLCM properties have been evaluated. We have illustrated the discovery in practice and highlights the usefulness of the joint models with latent classes in this kind of data even with pre-specified factors. We made some recommendations for the use of this model and for future research.

scholarly journals Full Water Quality Monitoring of a Traditional Flow-Through Rainbow Trout Farm

Fishes ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 28 ◽  
Author(s):  
Alexandre Tahar ◽  
Alan Kennedy ◽  
Richard Fitzgerald ◽  
Eoghan Clifford ◽  
Neil Rowan
Keyword(s):  
Water Quality ◽  
Rainbow Trout ◽  
Water Treatment ◽  
Water Reuse ◽  
Water Quality Monitoring ◽  
Fish Growth ◽  
Ammonium Concentration ◽  
Fish Welfare ◽  
Flow Through ◽  
The Impact

Traditional freshwater rainbow trout farms are still popular in some European countries such as Poland, France and Ireland. These systems generally operate in flow-through configuration. The impact such production systems might have on water quality remains mostly unknown. The present study was set up to fulfil this objective of monitoring water quality on different fish farm locations in order to identify the impacts of the whole farm (comparison of farm inlet and outlet) and at pond scale in order to understand the water quality dynamics and to better understand the impact of multiple water reuse (water passes) in a given pond on water quality. In the absence of any sort of water treatment, an increase in the number of water passes was shown to create an increase in ammonium concentration along the farm. Finally, this traditional flow-through rainbow trout production system was revealed to almost be at its full carrying capacity with respect to internal water quality parameters and fish welfare. To increase fish production, some water treatment techniques (solid/liquid separation, nitrification) would have to be introduced in order to optimize the rearing water quality for fish growth and to minimize the release of pollutants in the receiving water to limit the impact on the environment.

scholarly journals The role of allogeneic stem-cell transplant in myelofibrosis in the era of JAK inhibitors: a case-based review

2019 ◽  
Vol 55 (4) ◽  
pp. 708-716 ◽  
Author(s):  
Mario Tiribelli ◽  
Francesca Palandri ◽  
Emanuela Sant’Antonio ◽  
Massimo Breccia ◽  
Massimiliano Bonifacio
Keyword(s):  
Stem Cell ◽  
Real Life ◽  
Cell Transplant ◽  
Jak Inhibitors ◽  
Case Scenario ◽  
Hematopoietic Stem ◽  
Curative Therapy ◽  
Before And After ◽  
The Impact

Abstract Allogeneic hematopoietic stem-cell transplantation (HSCT) is, at present, the only potentially curative therapy for myelofibrosis (MF). Despite many improvements, outcomes of HSCT are still burdened by substantial morbidity and high transplant-related mortality. Allogeneic transplant is generally considered in intermediate-2 and high-risk patients aged <70 years, but the optimal selection of patients and timing of the procedure remains under debate, as does as the role of JAK inhibitors in candidates for HSCT. Starting from a real-life clinical case scenario, herein we examine some of the crucial issues of HSCT for MF in light of recent refinements on MF risk stratification, data on the use of ruxolitinib before and after transplant and findings on the impact of different conditioning regimens and donor selection.

OPTIMIZATION OF THE DESIGN-OPERATING PARAMETERS OF THE HYDROCYCLONE TAKING INTO ACCOUNT FIELD RESEARCH

2020 ◽  
pp. 61-67 ◽  
Author(s):  
M.I. LAMSKOVA ◽  
◽  
M.I. FILIMONOV ◽  
Y.I. SUKHAREV ◽  
A.E. NOVIKOV ◽  
...  
Keyword(s):  
Water Treatment ◽  
Distribution Systems ◽  
Water Distribution ◽  
Side Wall ◽  
Side Surface ◽  
Maximum Efficiency ◽  
Regression Equations ◽  
Treatment Unit ◽  
Drain Pipe ◽  
The Impact

Cylindrical-conical pressure hydrocyclones are characterized by high productivity and efficiency indicators of water treatment from mechanical impurities at a relatively small size and cost, low resource costs for operation, which makes their use promising as a water treatment unit in the circulating water distribution systems of domestic and foreign industry. The purpose of the research is development of the construction of a filtering hydrocyclone and assessment of the impact of the fl ow characteristics and size of the sand pipe on the separative power of the apparatus in the process of water teratment from mechanical impurities. The presented design of the hydrocyclone apparatus with a filter drain pipe allows to increase water treatment rates from mechanical impurities including by trapping the smallest suspensions. As a result of experimental research of the effect of the flow characteristics and size of the sand pipe on the separative power of the apparatus, the technological and construction parameters of the PH-100 hydrocyclone with various versions of the drain pipe providing maximum efficiency of water treatment from mechanical impurities have been established. The graphoanalytic solution of the obtained regression equations has allowed us to establish that a hydrocyclone with a solid side wall drain pipe provides the maximum degree of water treatment from mechanical impurities at the level of 85.4% at a flow rate of 6.5 m3/h and a 12 mm diameter of the sand pipe. Replacing the standard construction drain pipe with a filtering side surface drain pipe increases the integral degree of water treatment from mechanical impurities to 96.4% with the same flow parameters and diameter of the sand pipe.

scholarly journals Validation of a Worst-Case Scenario Method Adapted to the Healthcare Environment for Testing the Antibacterial Effect of Brass Surfaces and Implementation on Hospital Antibiotic-Resistant Strains

Antibiotics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 245
Author(s):  
Emilie Dauvergne ◽  
Corinne Lacquemant ◽  
Crespin Adjidé ◽  
Catherine Mullié
Keyword(s):  
Exposure Time ◽  
Antibacterial Effect ◽  
Real Life ◽  
Health Care Facilities ◽  
Case Scenario ◽  
Worst Case ◽  
Antibiotic Resistant ◽  
Worst Case Scenario ◽  
Resistant Strains ◽  
The Impact

The evaluation of antibacterial activity of metal surfaces can be carried out using various published guidelines which do not always agree with each other on technical conditions and result interpretation. Moreover, these technical conditions are sometimes remote from real-life ones, especially those found in health-care facilities, and do not include a variety of antibiotic-resistant strains. A worst-case scenario protocol adapted from published guidelines was validated on two reference strains (Staphylococcus aureus ATCC 6538 and Enterobacter aerogenes ATCC 13048). This protocol was designed to be as close as possible to a healthcare facility environment, including a much shorter exposure-time than the one recommended in guidelines, and evaluated the impact of parameters such as the method used to prepare inocula, seed on the surface, and recover bacteria following exposure. It was applied to a panel of 12 antibiotic-resistant strains (methicillin resistant, vancomycin-resistant, beta-lactamase, and carbapenemase producing strains as well as efflux pump-overexpressing ones) chosen as representative of the main bacteria causing hospital acquired infections. Within a 5-min exposure time, the tested brass surface displayed an antibacterial effect meeting a reduction cut-off of 99% compared to stainless steel, whatever the resistance mechanism harbored by the bacteria.

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