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This document describes a microbubble generator and mixing device that: 1. Efficiently transfers oxygen to water through the generation of macro, micro, and nanobubbles. 2. Strongly circulates water horizontally and vertically through the injection of water at high velocities, helping to breakdown organic matter. 3. Adsorbs pollutants to microbubbles which then rise slowly, aiding in the coagulation and removal of suspended solids from the water.
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Man is completely dependent on water.Hence pure water is essential for many purposes.Though till now many filtration techniques have been introduced so far, using of nano technology make as the purest form of water.
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This document discusses ozone water treatment. It provides background on ozone, including its discovery and properties. Ozone water treatment involves using ozone to purify drinking water by removing microorganisms. Ozone works by directly and indirectly reacting with contaminants through oxidation. While effective, ozone water treatment is more expensive than other methods and requires professional operation and maintenance.Water cleani̇ng wi̇th ozone
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Ozone has been used for water treatment since the late 1800s and is more commonly used in Europe and Asia than the United States. Ozone is an unstable gas made of three oxygen atoms that degrades back to oxygen, forming reactive free radicals. Ozone is effective at disinfecting bacteria and viruses compared to chlorine and can also reduce levels of iron, manganese, sulfur, and odors. The ozonation process involves producing ozone gas and bubbling it into water to create oxidation, followed by aeration and filtration to remove oxidized particles. While ozonation is effective, it also has higher costs than other methods and does not provide a disinfection residual.Clean Water For All
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This document provides information about using ozone for wastewater disinfection. It discusses that ozone has been successfully used for decades at sewage treatment plants around the world. Recent advances have made ozone generation equipment more effective and economical. The document then addresses 14 questions about ozone disinfection, covering topics like its effectiveness compared to other methods, its treatment benefits, cost competitiveness, suitability for different plant sizes and wastewater sources, and pilot testing requirements.Ozone wastewater treatment
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Ozone is an effective method for treating micropollutants like pharmaceuticals in wastewater. Conventional treatment does not fully remove persistent micropollutants, which can have negative environmental impacts. Ozone reacts quickly with these micropollutants through oxidation, eliminating many at trace concentrations. Pilot tests show ozone reduces micropollutants to below detection limits at dosages of 5-15 mg/L. Ozone treatment is an environmentally friendly option that avoids harmful byproducts of other chemical treatments.Nano porous membranes for water purification by shrinath ghadge
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Continuous population growth and urbanization as well as rapid industrialization, causing huge contamination of potable water or underground water, has been a serious concern all over the world. Due to incompetency of conventional water purification technologies to deliver complete pollutants free water at an economical price, a high performance, cost-effective and environmentally acceptable separation system is an urgent need which should not only remove macro-, micro- and nano-pollutants but also desalinate water to a significant extent. In this milieu, nanotechnology based carbon nanotube (CNT) membranes have shown impressive breakthroughs towards water purification as compared to existing energy intensive water purification systems and thus, this technology has immense potential for large scale commercial water purification in a cost effective manner. Water Pollution Prevention and Treatment using Nanotechnology
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• Nanofiltration membranes, including desalination technologies;
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• Magnetic nanoparticles; and
• Nanosensors for the detection of contaminants
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2. Other nanomaterials like gold-embedded manganese oxide have been shown to effectively remove common indoor air pollutants like acetaldehyde, toluene, and hexane at room temperature.
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Specialist Providers of Effective Infrastructure Solutions in Emerging Markets
RMA Group is a specialist provider of automotive and other infrastructure solutions to clients in more than 30 emerging and post-conflict markets around the world.
Over the last 25 years we have become accomplished in fulfilling the requirements of governments, NGOs, aid organizations, and private sector companies. We also serve the telecom, power generation, mining, construction, engineering, and oil & gas industries with comprehensive solutions to a wide variety of demands.
RMA Group provides innovative and cost effective solutions to our clients through an understanding of their issues – the pressures they face in projects to which they are committed, and the daily demand of on-the-ground needs.More Related Content
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Man is completely dependent on water.Hence pure water is essential for many purposes.Though till now many filtration techniques have been introduced so far, using of nano technology make as the purest form of water.
Nanofiltration is a relatively recent membrane filtration process used most often with low total dissolved solids water such as surface water and fresh groundwater, with the purpose of softening ( polyvalent cation removal) and removal of disinfection by-product precursors such as natural organic matter and synthetic organic matter.
Though this paper concentrates on function of nanofiltration,it also elaborates the applications,needs and dis advantages of it.Nano water technology
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Ìý
nanotechnology has entered the sphere of water treatment processes. Many different types of nanomaterial’s are being evaluated and also being used in water treatment process.
Desalination is a key market area. Vast majority of worlds water is salt water, and though technology has existed for years that enables the desalination of ocean water, it is often a very energy intensive procedure and therefore expensiveOzone water treatment
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This document discusses ozone water treatment. It provides background on ozone, including its discovery and properties. Ozone water treatment involves using ozone to purify drinking water by removing microorganisms. Ozone works by directly and indirectly reacting with contaminants through oxidation. While effective, ozone water treatment is more expensive than other methods and requires professional operation and maintenance.Water cleani̇ng wi̇th ozone
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Ìý
Ozone has been used for water treatment since the late 1800s and is more commonly used in Europe and Asia than the United States. Ozone is an unstable gas made of three oxygen atoms that degrades back to oxygen, forming reactive free radicals. Ozone is effective at disinfecting bacteria and viruses compared to chlorine and can also reduce levels of iron, manganese, sulfur, and odors. The ozonation process involves producing ozone gas and bubbling it into water to create oxidation, followed by aeration and filtration to remove oxidized particles. While ozonation is effective, it also has higher costs than other methods and does not provide a disinfection residual.Clean Water For All
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Nano technology has the potential to address current problems in water treatment by utilizing unique properties of nanomaterials. Nanoparticles can be used for nanoadsorption, nanocatalysis, nanofiltration, and nanoremediation to more efficiently treat water and wastewater. However, further development is needed to prove safety and reduce costs before wide applications. Research on environmental risks from nanoparticles in water systems is also important.Ozonation of municipal wastewater rev mar 05
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Ìý
This document provides information about using ozone for wastewater disinfection. It discusses that ozone has been successfully used for decades at sewage treatment plants around the world. Recent advances have made ozone generation equipment more effective and economical. The document then addresses 14 questions about ozone disinfection, covering topics like its effectiveness compared to other methods, its treatment benefits, cost competitiveness, suitability for different plant sizes and wastewater sources, and pilot testing requirements.Ozone wastewater treatment
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Ìý
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Continuous population growth and urbanization as well as rapid industrialization, causing huge contamination of potable water or underground water, has been a serious concern all over the world. Due to incompetency of conventional water purification technologies to deliver complete pollutants free water at an economical price, a high performance, cost-effective and environmentally acceptable separation system is an urgent need which should not only remove macro-, micro- and nano-pollutants but also desalinate water to a significant extent. In this milieu, nanotechnology based carbon nanotube (CNT) membranes have shown impressive breakthroughs towards water purification as compared to existing energy intensive water purification systems and thus, this technology has immense potential for large scale commercial water purification in a cost effective manner. Water Pollution Prevention and Treatment using Nanotechnology
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Ìý
If nanotechnology is to represent societal as well as technical progress, It will have to contribute to the solution of global problems such as water quality. Providing clean and affordable water to meet human needs is a grand challenge of the 21st century. Worldwide, water supply struggles to keep up with the fast growing demand, which is exacerbated by population growth, global climate change, and water quality deterioration. The need for technological innovation to enable integrated water management cannot be overstated. Nanotechnology holds great potential in advancing water and wastewater treatment to improve treatment efficiency as well as to augment water supply through safe use of unconventional water sources.
Given the importance of clean water to people in developed and developing countries, numerous organizations are considering the potential application of nanoscience to solve technical challenges associated with the removal of water contaminants. Technology developers and others claim that these technologies offer more effective, efficient, durable, and affordable approaches to removing specific types of pollutants from water. A range of water treatment
devices that incorporate nanotechnology are already on the market and others are in advanced stages of development. These nanotechnology applications include:
• Nanofiltration membranes, including desalination technologies;
• Attapulgite clay, zeolite, and polymer filters;
• Nanocatalysts;
• Magnetic nanoparticles; and
• Nanosensors for the detection of contaminants
Nanotechnology in waste water treatment
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Ìý
This document discusses how nanotechnology can be used for waste water treatment. It explains that nanoparticles are effective at removing pollutants from water due to their high surface area. Various nanomaterials like metal nanoparticles, carbon nanomaterials, and zeolites can be used. Specifically, nano sorbents can sorbe a wide variety of organic and inorganic contaminants, nano catalysts can increase reaction rates to degrade contaminants, and biomimetic membranes allow for efficient desalination using reverse osmosis. Molecularly imprinted polymers also selectively remove pollutants even at low concentrations. Overall, nanotechnology provides effective, efficient, and eco-friendly approaches to water treatment.Nanotechnology in waste water treatment
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Ìý
This document discusses the use of nanotechnology for wastewater treatment. It notes that over 75% of the Earth is covered in water, but less than 1% is accessible freshwater for human use. Nanomaterials like dendrimers, metal nanoparticles, zeolites and carbon nanotubes can be used for wastewater treatment through processes like nanosorption, nanofiltration and photocatalysis. These nanomaterials have advantages over conventional treatment methods like higher efficiency and capacity. However, scaling up nanotechnology for wastewater treatment remains a challenge.12 water and waste water treatment
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Ìý
Nano materials have properties that make them well suited for addressing issues with current water treatment technologies. Their large surface area and reactivity allows them to more effectively adsorb contaminants. Nano adsorbents like carbon nanotubes and metal oxides can remove higher levels of pollutants. Nano catalysts like titanium dioxide and zinc oxide use photoactivity to break down chemicals. Nanoscale filters made of alumina or carbon nanotubes can remove bacteria and viruses. While nanotechnology shows promise for improving water treatment, further research is needed to assess environmental and health risks and make the techniques economically viable at large scales.Nanotechnology in water treatment
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1. Nanotechnology shows potential for improving water treatment through the use of nanomaterials for filtration, remediation, sensing, and disinfection. Various nanomaterials under research include carbon nanotubes, nanoparticles, and dendrimers for filtration and zeolites, carbon nanotubes, and nanoparticles for remediation.
2. While nanotechnology could address issues like water scarcity and quality, research is still needed to fully understand the toxicity of engineered nanoparticles. More data is needed on their environmental and health impacts before large-scale use in water applications.
3. Overall, nanotechnology represents an emerging area that may lead to novel solutions for water treatment through the unique properties of nanomaterials. However, moreWater treatment-WATER TREATMENT PROCESS-OZONISATION AND UV APPLICATION
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The document discusses different methods of water treatment including ozone treatment and UV treatment. For ozone treatment, it describes the process of generating ozone using electrical discharge, injecting ozone into water, the contact time needed for ozone to disinfect, and filtering out oxidized particles. It lists advantages such as strong germicidal properties and ability to eliminate various problems, and disadvantages like higher costs and potential byproducts. For UV treatment, it explains how UV light damages microorganisms' DNA to prevent reproduction and provides advantages like not adding chemicals, but disadvantages include need for regular maintenance and inability to treat turbid water.Shreya ppt
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This document discusses the topic of nanobioremediation. It begins with introductions to nanoscience and bioremediation. Nanobioremediation uses nanoscience and nanoparticles to enhance microbial activity and remove pollutants more quickly. Examples are given of using genetic engineering and nanoparticles to modify microbes for improved bioremediation. The document concludes that nanobioremediation can clean environmental hazards faster and safer than other methods while meeting economic, social, and environmental criteria.Nano in Air
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Ìý
Nanotechnology can be used to clean the air through various applications. Some key points:
1. Nanoparticles like titanium dioxide can be used in photocatalytic filters to break down air pollutants like VOCs, NOx, and pathogens into harmless byproducts like water and carbon dioxide when exposed to light.
2. Other nanomaterials like gold-embedded manganese oxide have been shown to effectively remove common indoor air pollutants like acetaldehyde, toluene, and hexane at room temperature.
3. Nanotechnology allows more effective air filtration and purification systems to be developed for indoor and outdoor applications to improve air quality.Aspe Presentation 02 17 09
Aspe Presentation 02 17 09ARSacco
Ìý
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Ìý
This document discusses the use of nanotechnology in bioremediation. It begins by introducing bioremediation and some common remediation methods like ex situ and in situ techniques. It then discusses how nanotechnology tools can help overcome challenges with bioremediation by increasing bioavailability and contaminant solubility using techniques like iron nanoparticles, nano sorbers, single-enzyme nanoparticles, and zero-valent iron nanoparticles. The document concludes by covering how nanotechnology is being applied in industry for treatment, sensing, and pollution prevention.DUMO Algacleaner - Working principles and research
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The document discusses ultrasonic technology for controlling algae growth. It explains that ultrasound works by generating pressure waves in water that rupture the gas vesicles inside algae cells, destroying the cell structure. The document then describes Toscano's product, the DUMO Algacleaner, an ultrasonic device developed for algae control based on these principles. Test results show the Algacleaner significantly reduces chlorophyll A levels and inhibits algae growth in treated water bodies over time. The document concludes by highlighting key aspects of the Algacleaner's design that make it an effective and powerful solution for algae control.Viewers also liked (14)
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Specialist Providers of Effective Infrastructure Solutions in Emerging Markets
RMA Group is a specialist provider of automotive and other infrastructure solutions to clients in more than 30 emerging and post-conflict markets around the world.
Over the last 25 years we have become accomplished in fulfilling the requirements of governments, NGOs, aid organizations, and private sector companies. We also serve the telecom, power generation, mining, construction, engineering, and oil & gas industries with comprehensive solutions to a wide variety of demands.
RMA Group provides innovative and cost effective solutions to our clients through an understanding of their issues – the pressures they face in projects to which they are committed, and the daily demand of on-the-ground needs.Introduction to the RMA Group
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- 1. RMA QA AERATORS & MIXING UNITS MICRO-BUBBLE GENERATOR HEADS INDUSTRIAL FLOATING VERSION
- 2. • Highly efficient dissolved oxygen transfer device • Highly efficient macro-, micro- and nano-bubble generation • Strong water circulation and disinfection RMA QA Microbubble generator and mixer N.B. picture shows cut off water outlets for demonstration only, in practice they extend below the water surface
- 3. RMA QA in operation at Queensland testing facility with 22km/h water injection velocity driving water circulation in an aeration tank. Aggregation of fine particles (fat, grease, oil and solids) on the surface of a river in China
- 4. Simple stainless steel frame supported in water by long-life, marine grade buoys, resistant to bio-fouling and UV and will float if shot at. Reparator’s microbubble generator stainless steel heads produces a macro- and micro-bubble cloud Micro-bubbles collapse into nano- bubbles and are stored in the water for up to 6 months Sulzer submersible pump with Contrablock impeller for improved rag handling and blockage resistance Up to 100,000 hour bearing life Stainless steel protective screen mesh At least 700 mm clearance
- 6. Features • Highly efficient with SOTR of 5 kg O2 / kWh and low energy consumption • Creation of a bank of stored air nanobubbles that amplifies the growth of microbial populations which breakdown organic matter • Water is injected at 22 km/h and strongly circulated horizontally and vertically as a macrobubble (>1mm) and microbubble (1 – 100 micron) cloud for destratification • Macrobubbles coalesce and rise rapidly to breakup biomass and increase the digestible surface area. Reparator generators filling a tank with microbubbles at a testing facility
- 7. • Microbubbles appear as a milky white solution (pictured left) and the increase in turbidity coupled with adequate water mixing create an environment resistant to algal blooms • Microbubbles increase in negative zeta potential (electrical charge) as they shrink with decreasing levels of dissolved oxygen in water due to adsorbed hydroxyl ions • The strong negative surface charge of microbubbles allow them to adsorb to pollutants and neutralise their charge, causing coagulation and flocculation of suspended solids, fats, oils, grease and other chemicals • Microbubbles rise very slowly at 20 cm/h and possess a large interfacial area which both contribute to large oxygen dissolution
- 8. • When microbubbles collapse they generate nanobubbles which stay suspended in the water due to their low buoyancy and disperse throughout the entire waterbody through Brownian motion • Nanobubbles implode with high pressure and temperature (over 3,000 degrees C) to rupture the cell walls of any adsorbed pathogens and easily dissolve oxygen into water • The implosion process increases the oxidation potential by up to 200 mV which oxidises dissolved chemicals, transitional and heavy metals (Iron, Manganese, Calcium and others) • The nanobubble collapse generates OH- and O- free radicals as well as hydrogen peroxide to sterilise the water
- 9. Moree Plains Shire Council, New South Wales Aerobic treatment in the first tertiary pond - Moree Plains Sewage Treatment Plant • BOD decreased by 71% • SS decreased by 10% • Ammonia decreased by 87% • O & G decreased by 37% • Malodour totally eliminated • Turbidity TBA • Increased wildlife and aesthetic acknowledged by shire and community members Monitoring of data available: http://www.mpsc.nsw.gov.au/index.php/ home/waste/epa-monitoring Acknowledgement: Moree Plains Shire Council Tertiary Wastewater Pond
- 10. Riddells Creek, Victoria Management of blue-green algae in the Sewage Treatment Plant • Before: 1.256 million Blue Green Algae count • One Early Version Unit commissioned • After: < 80
- 11. Water Treatment • Pre-treatment for irrigation systems • Pre-treatment for reverse osmosis plants • Pre-treatment for drinking water supply • Aerobic treatment of stormwater • Lake, river and polluted waterway remediation • Destratification of dams, reservoirs and large waterbodies • Aeration for all forms of aquaculture Wastewater Treatment • Municipal leachate treatment • Dissolved air floatation • Wastewater or sewage treatment plant aeration systems • Industrial food process effluent ponds Applications for RMA QA – Microbubble Generator & Mixer