When emergencies inevitably arise, municipal operators need to be prepared to respond immediately to restore services in order to provide safe, reliable water to their customers. Take for example the City of Cisco, Texas.
Hendersonville Utility District (HUD) serves one of the most populous suburbs of Nashville, Tennessee.
When Linda Mullen took over as water superintendent in Burnsville in 2007, the city was in the process of adding surface‐water treatment to its existing plant. Burnsville began purchasing water from the nearby Kraemer Mining and Materials quarry, both to supplement its supply and to help the quarry meet discharge permits.
The City of Salem uses a slow sand filtration water treatment process, which uses naturally occurring biological activity to clean drinking water. The water treatment facility treats an average of 30 MGD throughout most of the year, with a peak of 50 MGD in the summer.
A San Jose Water Quality Engineer said, "“I wasn’t convinced that PSI’s Monoclor™ chloramine dosing system would solve our problems after several failed attempts to improve residual, but with PSI offering a trial including installation, operation, and troubleshooting for three months, San Jose Water decided to invest the necessary resources to pilot this system.
“To me, Microclor® is the top of the line on‐site generation system on the market due to low maintenance and it being very user friendly.” Larry English, Water Quality Manager, Daphne Utilities. Read the full project profile to learn more.
Built in 2002, Southern Nevada Water Authority’s (SNWA) River Mountains Water Treatment Facility is a state-of-the art water treatment facility that delivers 300 million gallons per day and was designed to be expanded to deliver up to 600 million gallons per day of treated water in the future.
Water professionals are seeking innovative approaches to address water supply challenges associated with population growth, drought, and environmental protection.
CH2M contacted Toray Membrane USA with an invitation to pilot our pressurized TIPS hollow fiber UF membrane module for the City of Sherman Texas 10 MGD Expansion Project. This document summarizes the findings of this pilot study program.
As engineers come under increasing pressure to reduce maintenance and operating costs, inefficient combination double-pass reverse osmosis and electrodeionization (RO/EDI) water treatment systems have begun to lose popularity as a means of providing ultra-pure water. Integrated membrane systems (IMS), on the other hand, combine multiple membrane-based water treatment processes into a single system. In this case study, find out how a heat and power plant in Northeast China lowered capital costs and energy use by adopting an IMS to replace its conventional water treatment system.
Electrodeionization (EDI) is widely used in many industrial water treatment systems throughout the world. In order to maximize the operating stability and life expectancy of an EDI system they were often designed with double pass RO using caustic injection pretreatment. By Membrana
Perfluoroalkyl Compounds: Perfluorooctane Sulfonic Acid (PFOS) and Perfluorooctanoic Acid (PFOA) Treatment.
Neptune Benson’s Vortisand is a high performance automatic backwashable cross-flow microsand filtration system that filters down to the submicron level; 10 to 50 times finer than other media filters. Vortisand combines a cross-flow condition and sand filtration in the same vessel to achieve high performance filtration results both in pre and post membrane applications.
In the adsorption process, contaminants break their bond with the water molecules and chemically adhere to a filter media. This is typically accomplished by directing the water flow through pressure vessels containing the filter media at a rate that allows enough contact time for adsorption to occur. AdEdge Water Technologies’ Bayoxide E33 adsorption media is the industry standard for arsenic removal. This granular ferric oxide media reduces up to 99% total arsenic, including both Arsenic (III) and Arsenic (V).
CSM NF membranes selectively removes divalent and monovalent ions, making it ideal for a wide range of applications. Typical uses include production of food & beverage, dye recovery, and water softening and removal of specific impurities (i.e. color, DBP, THM) for potable use. CSM NF Membranes are constructed with either a polyamide or piperazine thin-film layer, and are available in various sizes. Inquire within for custom-engineered solutions.
Over the years, WesTech has supplied our customers with anaerobic digestion equipment that has added value to their plant operations. WesTech continues to provide valuable solutions with the DuoSphere™ Dual Membrane Gasholder.
The advantages which have made ultraviolet irradiation an effective, and the fastest growing, disinfection technology for wastewater are now available for primary disinfection of municipal drinking water.
Festo is a leading global manufacturer of automation technology including systems, components, and controls for process control and factory automation solutions.
The TurboStat sidehill static screen is one of the simplest and most economical methods for solids separation. All units feature a stainless steel wedge wire filtration surface. The working principle is based on a liquid current circulating over the screen's curved surface.
Water treatment plants are responsible for sampling their water quarterly for trihalomethanes (THM). THM are a group of four chemicals that are formed along with other disinfection byproducts (DBPs) when chlorine or other disinfectants used to control microbial contaminants in drinking water react with naturally occurring organic and inorganic matter in water.
If you’re still unfamiliar with the name De Nora, it’s time to get acquainted. Traditionally a supplier of plates for electrolytic industries, the company purchased Severn Trent’s equipment business in 2015 and is investing in its core business of disinfection and filtration.
Aqua-Aerobic recently merged with METAWATER USA, introducing the latter’s ozone and ceramic membrane technologies to the United States market. In this Water Online Radio interview, Dave Holland, Senior Applications Engineer with Aqua-Aerobic Systems, discusses the benefits of the new membrane, which he describes as “virtually unbreakable.”
As utilities grapple to do more with less, many manufacturers are creating novel retrofit products that can work within the current footprint of a treatment facility.
Biottta is a relatively new biological filtration process for drinking water treatment, addressing nitrates, perchlorates, chromium-6 and a number of VOCs as well. In this Water Online Radio interview, AdEdge Water Technologies’ Chad Miller and Rich Cavagnaro discuss its emergence in the water treatment market and some of the specific contaminants it addresses.
Andy McClure and Jim Knepper of Jacobi Carbon recently sat down with Water Online Radio to discuss the differences between activated carbon and ion exchange resins as mediums for water purification. The interview covered recent developments such as the lowering of the EPA’s health advisory level for perflourinated compounds and cyanotoxins from algal blooms to the more traditional concerns of taste, odor, disinfection byproducts and TOC reduction.
As a leading manufacturer of activated carbon, with broad capabilities in ultraviolet light disinfection, Calgon Carbon provides purification solutions for drinking water, wastewater, pollution abatement, and a variety of industrial and commercial manufacturing processes. This animation takes you through the process of manufacturing activated carbon.
After an activated carbon’s adsorptive capacity has been exhausted, it can be returned to Calgon Carbon for thermal reactivation. With high temperature reactivation followed by off-gas treatment, the adsorbed organic compounds are destroyed and reactivated carbon can be safely and cost-effectively recycled back to facilities for continued use.
The SEPAREL PF series removes dissolved gases in water through a tube-shaped gas permeable membrane composed of polytetrafluoroethylene (PTFE). Gasses dissolved in water flow through the tube and are removed due to the pressure difference of the gases inside and outside of the tube, thus creating a vacuum outside of the tube. This video explains how the PF series works.
QUA® is a leading-edge developer and manufacturer of advanced membrane products, which includes fractional electrodeionization (FEDI) and hollow fiber ultrafiltration module (Q-SEP). These are engineered with innovative technologies, which are used to treat challenging waters. QUA is leveraging its deep roots in R&D, the expertise of staff that is highly experienced in water treatment technologies, and its significant financial resources to become a global technology leader in the development of products for water and wastewater treatment applications.
Manufacture of filter housings and elements|Pleated membrane and high efficiency cartridges|Bag housings and bags
Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design and manufacture of wastewater treatment equipment and systems for both municipal and industrial markets, worldwide.
Ovivo brings together more than 200 years of collected experience, process expertise and proven technologies; but that doesn’t mean that we’re complacent. Over past centuries of growth, development and refinement we have been guided by the principle of delivering value to our clients. Our equipment and technologies already have a reputation for long-term durability and reliability, offering decades of use and leading to lasting relationships with key customers.
AdEdge Technologies, Inc specializes in the development and supply of innovative technologies, adsorbent-based products, and systems that remove contaminants from process or aqueous steams. We are an organization based on solid deliverable, scalable, scientifically proven technology and experience for the removal of arsenic and other contaminants from water
Leopold Universal Type S and SL Underdrain|Leopold IMS Cap|Leopold DAF - Dissolved Air Flotation|Leopold Clari-Trac (CT2) Submerged Sludge Collector|Leopold Clari-Vac Floating Sludge Collector|Leopold Engineered Filter Media Products|Leopold Instruments And Controls| Leopold Ultrafiltration Membrane Systems
Veolia Water Technologies offers comprehensive water and wastewater solutions for industrial and municipal customers. With unique technologies and process expertise, Veolia specializes in engineering, design, and project management, construction and execution.
Eco-Tec Inc. engineers, designs, manufacturers and distributes from Pickering, near Toronto, Canada. Customer service and technical support provide treatability studies, installation service, on-site supervision and operator training...
Evoqua Water Technologies, formerly Siemens Water Technologies, is a leader in water and wastewater treatment products, systems and services for industrial and municipal customers. We offer a wide range of proven product brands and advanced water and wastewater treatment technologies, mobile and emergency water supply solutions and service contract options.
Water Treatment Equipment |Wastewater Treatment Equipment |Sludge Management Equipment
De Nora Water Technologies is a leading supplier of water and wastewater treatment solutions. We provide our clients with some of the industry’s brightest minds, advanced technologies, and quality products to provide you with truly efficient, cost-effective solutions to your water and wastewater challenges
WRT provides effective processes for removing radium, uranium and other contaminants from water. Our complete package of services includes process equipment, proprietary treatment media, safe exchange of media, and proper handling and disposal of used media
Filtronics has manufactured water and waste water treatment systems for industrial and municipal applications since 1974
Liqui-Cel® Membrane Contactors are used for degassing liquids. They are most commonly used for O2 removal from water and CO2 removal from water, but they are also capable of controlling a variety of other dissolved gasses as well, such as Nitrogen.
Water treatment filtration involves the removal of suspended particles from water by passing the water through a filtration medium. As the water passes through the filter, floc, minerals, microorganisms and other impurities get stuck in the filter and are removed from the filtered water. Passage can be blocked by physical obstruction, biological action, adsorption, absorption or a combination of ways. Filtration is usually the final step in the solids removal process during water treatment which typically begins with coagulation and advances through flocculation and sedimentation.
Unfiltered or turbid water is difficult to disinfect because microorganisms growing on suspended particles are often harder to kill than when they are separated from the particles. Turbidity can also cause unwanted taste and odor issues in the potable water supply. Drinking water filtration is also used to remove microorganisms that are resistant to traditional methods of disinfection such as chlorination. By requiring a low turbidity in finished water, water treatment plants are ensuring that few or no microorganisms such as Giardia are present in finished drinking water.
There are three typical methods of clean water filtration used during the water treatment process. Conventional filtration follows coagulation, flocculation and sedimentation and precedes disinfection. Direct Filtration follows coagulation and flocculation when there is no sedimentation step. The final method called In-Line Filtration takes place without flocculation or sedimentation. A coagulant chemical is added to the water just before filtration and coagulation occurs in the filter.
There are many types of filter media being used in today’s water treatment industry.
