scholarly journals Case Study: Integrate Nuclear Water Desalination--Regional Potable Water in Arizona

2019 ◽  
Author(s):  
Aaron S Epiney ◽  
James D Richards ◽  
Jason K Hansen ◽  
Paul W Talbot ◽  
Pralhad Hanumant Burli ◽  
...  
Keyword(s):  
Potable Water ◽  
Water Desalination

Energy Benchmarking of Water and Wastewater Treatment, Distribution and Collection: A Case Study of Austin Water Utility

2013 ◽  
Author(s):  
Jill B. Kjellsson ◽  
David Greene ◽  
Raj Bhattarai ◽  
Michael E. Webber
Keyword(s):  
Water Distribution ◽  
Energy Intensity ◽  
Potable Water ◽  
Energy Savings ◽  
Operating Cost ◽  
Electric Energy ◽  
Water And Wastewater Treatment ◽  
Water Utility ◽  
Water And Wastewater

Nationally, 4% of electricity usage goes towards moving and treating water and wastewater. The energy intensity of the water and wastewater utility sector is affected by many factors including water source, water quality, and the distance and elevation that water must be transported. Furthermore, energy accounts for 10% or more of a utility’s total operating cost, suggesting that energy savings can account for significant cost savings. Better knowledge of where and when energy is used could support strategic energy interventions and reveal opportunities for efficiency. Accordingly, this investigation quantifies energy intensity by process and type, including electricity and natural gas, and explores the time-varying nature of electric energy consumption for potable water distribution using the Austin Water Utility (AWU) in Austin, Texas as a case study. This research found that most of energy consumed by the AWU is for pumping throughout the distribution network (57%) and at lift stations (10%) while potable water treatment accounts for the least (5%). Though the focus is site specific, the methodology shown herein can be applied to other utilities with sufficient data.

Simulations of Solar Power Systems to Provide Electricity to a Model Water Desalination Plant in Floreana Island, Ecuador

2021 ◽  
Author(s):  
Fernando Amoroso ◽  
Rubén Hidalgo-León ◽  
Jaqueline Litardo ◽  
Alejandro Granja ◽  
Jackeline Calderón ◽  
...  
Keyword(s):  
Power Systems ◽  
Water Desalination ◽  
Solar Photovoltaic ◽  
Electrical Load ◽  
Pump System ◽  
Desalination Plant ◽  
Cost Of Energy ◽  
Economic Comparison ◽  
Model Water

Abstract This work shows the techno-economic comparison of the design of two solar photovoltaic systems: 1) on-grid (G-SPVS) and 2) off-grid (SPVS). Both schemes aim to supply electricity to a model water desalination plant located in Floreana Island, Ecuador. The annual load profiles and other operational details of the case study were previously obtained. For this research, a period of 15-years was analyzed. During this time, the maximum power of water pump system remained constant and represented the highest percentage of the electrical load, which changed each year influenced by the drinking water requirements of the population. Results from the HOMER PRO simulations showed that the SPVS produced higher surpluses of electricity. In contrast, the G-SPVS exhibited lower net present cost (NPC) and cost of energy (COE).

scholarly journals Large-scale brackish water desalination plants in Gaza Strip: assessments and improvements

2013 ◽  
Vol 3 (3) ◽  
pp. 315-324 ◽  
Author(s):  
Yunes Mogheir ◽  
Ahmad A. Foul ◽  
A. A. Abuhabib ◽  
A. W. Mohammad
Keyword(s):  
Brackish Water ◽  
Large Scale ◽  
Potable Water ◽  
Gaza Strip ◽  
Water Desalination ◽  
Saline Groundwater ◽  
Operational Conditions ◽  
The Gaza Strip ◽  
Desalination Plants

Water scarcity is a serious challenge in the Gaza Strip, a region that is mostly considered to be semi-arid. In this region, the population's options for provision of potable water are limited to desalination of saline groundwater. Six large brackish water desalination plants (BWDPs) and one seawater desalination plant are operating and providing drinking water along with small private plants. The BWDPs were assessed in terms of operational conditions and quality of their feed and permeate with the aim of estimating essential improvements required as well as performance significance. All these plants are reverse osmosis plants and their operational conditions are similar in terms of production, recovery rate, and energy consumption. The quality of the plants’ feed was found not to comply with WHO and Palestinian Standards in most cases, unlike the permeate from all plants. The assessment made through this study assists in better understanding of the current situation of the large-scale desalination plants in Gaza and recommending essential improvements needed to increase water production of these plants without increasing abstraction and feed quantities. In addition, multi-criteria analysis used to evaluate BWDPs performance may assist in prioritizing improvements application.

scholarly journals Knowledge and practice of environmental sanitation and personal hygiene by traders. A case study of Tamale Central Market

2021 ◽  
Vol 62 (1) ◽  
pp. 71-82
Author(s):  
E. Arthur ◽  
A. Z. Imoro
Keyword(s):  
Potable Water ◽  
Personal Hygiene ◽  
Public Places ◽  
Environmental Sanitation ◽  
Sanitation And Hygiene ◽  
Toilet Facility ◽  
Hygiene Promotion ◽  
Knowledge And Practice ◽  
Questionnaire Surveys

Tamale is one of the rapidly growing cities in Ghana which is faced with numerous sanitation and hygiene problems. Markets generate large volumes of wastes due to their functions. Poor waste management in markets poses a threat to public health. This study sought to assess traders’ knowledge and practice of environmental sanitation and personal hygiene. It also sought to identify the environmental sanitation challenges in the market. Questionnaire surveys, interviews, and personal observations were employed for data collection. The traders demonstrated fair knowledge on environmental sanitation but most did not practice recommended sanitation practices. Moreover, both males (50.1%) and females (49.9%) demonstrated good knowledge of personal hygiene and practiced it. The study identified poor drainage systems, lack of potable water, inadequate waste bins, littering, pilling of wastes, poor wastewater handling as major environmental challenges in the market. The findings of this study underline the need for bolstering up environmental education and hygiene promotion activities in public places like markets. It is also recommended that the toilet facility within the market get replace or renovated. The need for sanitation equipment and tools like waste bins should be met by the Metropolitan Assembly, as well as supports from NGOs and other bodies.

scholarly journals Ion-exchange for trihalomethane control in potable water treatment – a municipal water treatment case study in Rainy River, Ontario, Canada

2018 ◽  
Vol 54 (2) ◽  
pp. 142-160 ◽  
Author(s):  
Kenneth Brezinski ◽  
Beata Gorczyca ◽  
Mehrnaz Sadrnourmohammadi
Keyword(s):  
Water Treatment ◽  
Ion Exchange ◽  
Potable Water ◽  
Fixed Bed ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Quality Standard ◽  
Trihalomethane Formation Potential ◽  
Potable Water Treatment

Abstract The objectives of this study were to investigate the ability for ion-exchange (IX) to control trihalomethane (THM) formation, and to act as a potential treatment addition (upgrade) to a conventional treatment plant in Rainy River Ontario, Canada. The primary goal was to investigate the total organic carbon (TOC) and trihalomethane formation potential (THMFP) removal as a function of resin dose; and note the relative improvements over current conventional plant operation. IX resin (DOWEX TAN-1, Purolite 502P and 860, and Amberlite PWA9) removed 68–72% of TOC and 30–40% THMFP from the conventionally filtered water. Fixed-bed fluidized bed contactor was used to investigate the TOC/THMFP breakthrough for the DOWEX TAN-1 resin. Complete resin breakthrough occurred followed by 1,275 and 1,075 bed volumes for TOC and THMFP, respectively. Breakthrough output following 1,000 treated bed volumes was noted as the point at which THMFP levels reach the 0.1 mg L–1 water quality standard threshold required by Canadian regulators. High exchange capacities were recorded for the TAN-1 (3.02 mg mL–1) and PWA9 (2.03 mg mL–1) resins – both of which contain styrene backbones. The results produced in the bench-scale experiments were used very successfully in a full-scale upgrade of the Rainy River water treatment plant.

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