Showing results for: wastewater recycling Articles
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Six examples of wastewater reuse after reed bed treatment
The U.A.E. receives infrequent and irregular rainfall, totalling less than 130 mm per year. Temperatures range from 10°C to 48°C. Both industries and the population in the U.A.E. are growing very fast and public infrastructure is struggling to keep up with the exploding volume of sewage. The aim of these projects is to demonstrate applicable wastewater reuse options for individuals, ...
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Constructed wetlands for wastewater reuse in agriculture
Deteriorating quality and increasing scarcity of water in Iraq demands a rethink in the way wastewater is managed. We show here that a constructed wetland can assist an existing sewage treatment plan not only to be lower than actual Iraqi effluent standards, but to also meet water quality criteria for reuse in agricultural production. Scarcity is one of several challenges to the Iraqi waters. ...
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Australian Cities Adopt Wastewater Reuse
Getting past old attitudes is a key to keeping up with growing water needs Potable reuse of wastewater has gone by many different names, some of them unflattering, like “toilet to tap.” Despite the clear benefits of water reuse, this so-called “ick factor” has slowed the adoption of technology that can transform wastewater into drinking water. Indirect potable reuse ...
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China Ramps up Wastewater Reuse
Aspiral wastewater treatment at service areas along China’s Hubei highway system allows effluent to be returned safely to the environment or used locally for agricultural irrigation In a country facing freshwater shortages, China’s five-year plan’s priorities promise further expansion of wastewater reuse In recent decades, China has considerably expanded water reuse as a ...
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Wastewater Reuse is a Sustainable Solution to Water Scarcity
UNICEF estimates that four billion people experience water scarcity for at least one month per year, and it is only getting worse as cities grow and climate change kicks in. But there is a solution right under our noses – literally. Wastewater recycling. Treating and reusing wastewater takes the pressure off limited freshwater supplies. The water can be used for farming, industry, ...
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Researchers investigate wastewater reuse in Namibian town
A multi-year project in Namibia, headed by scientists from the Technische Universität Darmstadt, is looking for the best way to upgrade wastewater stabilization pond systems so the water can be reused to irrigate animal fodder crops. Despite its simple aim, the project has the lengthy name of “EPoNa-upgrading wastewater ponds to generate irrigation water, using the Cuvelai-Etosha ...
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Effect of ozone on secondary effluent treatment for reuse in agriculture
The results of secondary effluents ozonation from domestic sewages treatment plants in Havana, Cuba are presented. The ozone effect on some physico-chemical parameters was determined. The ozone gas concentration is the parameter, which exerts the greatest influence on the ozone transferred. The results indicated that ozonation of secondary effluents is a safe disinfection alternative for ...
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Israel’s Water Scenarios Hold Lessons for Similar Regions
Population growth will drive demand in arid nation Few nations have embraced desalination and wastewater reuse as fully as water-stressed Israel. Since 2000, Israel has constructed five large-scale desalination plants for a combined capacity of 585 million cubic meters annually, with more plants on the way. Israel also reuses a whopping 87% of its wastewater. With its quickly growing population, ...
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Potential for wastewater reclamation and reuse in Lebanon
Eleven major wastewater treatment plants are planned for construction along the sea coast of Lebanon to handle the flow from the major urban centres. The plants are expected to generate approximately 640,000 m3 of treated sewage daily, and the effluent is planned to be disposed into the sea. In the light of the water deficiency that the country would be facing in the coming years, the reuse of ...
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Characterisation of RO fouling in an integrated MBR/RO system for wastewater reuse
Membrane filtration has gradually gained acceptance as the preferred pre-treatment for reverse osmosis (RO). In this paper, an integrated membrane bioreactor (MBR)/RO system for wastewater reuse treating real sewage water has been evaluated and the RO fouling has been characterised. The MBR achieved low values of organic matter, total nitrogen, PO43−, total organic carbon, turbidity and ...
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Total coliphages removal by activated sludge process and their morphological diversity by transmission electron microscopy
This study was conducted to isolate phages in treated sewage collected from wastewater treatment plant, and explore their morphological diversity by transmission electron microscopy (TEM). Fates of total bacteriophages and their reduction by biological treatment were also assayed. Phages were isolated using the plaque assay then negatively stained and observed by electron microscope. Electron ...
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Integration of seawater and grey water reuse to maximize alternative water resource for coastal areas: the case of the Hong Kong International Airport
Development, population growth and climate change have pressurized water stress in the world. Being an urbanized coastal city, Hong Kong has adopted a dual water supply system since the 1950s for seawater toilet flushing for 80% of its 7 million inhabitants. Despite its success in saving 750,000 m3/day of freshwater, the saline sewage (consisting of about 20–30% of seawater) appears to have ...
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Drinking rainwater and reusing wastewater
Decentralized systems for drinking water processing could make a significant contribution to the Millennium Development Goals. With the water concept in “self”, Eawag has demonstrated that membrane technology offers the chance to do just that. Lack of drinking water hygiene is one of the main sources of disease transmission worldwide, and in many situations centralized plants cannot ...
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Why the Value of Water Reuse is Often Underestimated
Traditional economic feasibility studies tend to focus exclusively on internal costs, missing out on much of the value that water reuse brings to the table Economic feasibility studies often decide the fate of water reuse projects, but the assessment methods generally weigh internal costs such as distribution and treatment requirements much more heavily than external benefits like environmental ...
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Innovative package solution for a wastewater reuse application in the Island of Crete - Case study
DEVISE ENGINEERING S.A. designed, engineered and manufactured a Modular Package (MBR) Wastewater Treatment Plant in the touristic area of “Gouves” for the Municipality of Hersonissos, Prefecture of Heraklion in the Island of Crete. This Package Sewage Treatment Plant treats domestic sewage and the effluent water is suitable for unrestricted irrigation, with guaranteed high quality ...
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Microfiltration Pilot System, California
INTRODUCTION In May 2013, Pure Aqua, Inc. successfully manufactured and supplied an microfiltration pilot system to a membrane manufacturer for Title 22 certification. Title 22 is the State of California’s stringent standard for treatment/disinfection of wastewater for non-potable reuse and discharge. The certification is considered the global standard for water reuse. MF/UF is the best ...
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Applications of Ultrafiltration Treatment Technology
Water treatment technology is and can be applied to different municipalities, industries, and commercial businesses, each with their own specific water treatment needs. For this reason, it is beneficial to have technologies on hand that are versatile based on the treatment application. For instance, filters are used in almost every water/wastewater treatment application in either pretreatment or ...
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Delhi Planning Water Reuse on an Epic Scale
In an area stricken with water stress, the new system would reclaim 500 million gallons per day The capital of India, New Delhi, is in a sprawling urban area in the country’s Delhi National Capital Territory (NCT), which has a population of more than 30 million and growing. It’s one of the largest cities in the world, having almost doubled its geographic area between 1999 and 2011 ...
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Subsurface trickle irrigation system for on–site wastewater disposal and reuse
Summary of Process Description The subsurface trickle irrigation system described in this report utilizes an aerobic treatment system in conjunction with a proven subsurface water application system developed by GEOFLOW, Inc. to offer a total system concept for safe and effective sewage disposal for site conditions considered marginal or unsuitable for conventional septic tank systems. The ...
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Development and application of biogas project for domestic sewage treatment in rural China: opportunities and challenges
The biogas project for domestic sewage treatment (BPDST) is considered a promising facility for wastewater management in rural areas of China. This paper explores previous experimental works, cost analysis, and BPDST structure and design based on Chinese literature. Opportunities for developing decentralized or neighborhood-based BPDSTs include fulfilling Millennium Development Goals (MDGs) ...
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