The students at the University of Miami will know firsthand the importance of rethinking the way we handle wastewater and water with a Net-Zero water treatment system on site. The project showed the viability and feasibility to take buildings off the water grid to provide water recycling and how it can be achieved without raising the cost of high quality water.
DRINKING WATER CASE STUDIES AND WHITE PAPERS
In California, Come Rain Or Shine, Upfront Efficiency Is Always In Style
Caught between a withering drought and floods from winter storms, California faces the worst of both worlds—dealing with scarcity as well as stormwater. America, and much of the world, is watching to see how this trendsetting state handles those challenges. After generations of setting America’s style, from cowboys to Beatniks to Beach Boys to Silicon Valley billionaires, California can set perhaps its most important trend yet—it can lead the way to a more water-efficient America. It has to. The good news is that it can.
UV Disinfection: An Ideal Solution For One Beverage Bottler
A well known bottler of teas and sports drinks uses a dose-paced UV system from ETS to accommodate changes in flow and water quality when switching between water sources.
CCD Technology Succeeds With Well Water Purification
The Kittansett Golf Club in Marion, Massachusetts is rated one of America’s 100 Greatest Golf Courses by Golf Digest Magazine.
Treatment Of Cyanotoxins In Drinking Water With Activated Carbon
Recently, cyanobacteria and cyanotoxins have become a high profile drinking water quality concern in both the United States and abroad. The combination of weather conditions, agricultural phosphate runoff, and other factors has produced water conditions that have favored the formation of cyanobacteria in surface water supplies.
Do We Have To Sacrifice Performance To Be Green?
The global use of membranes is widespread in municipal, industrial, and wastewater applications with reverse osmosis (RO) proving to be a highly effective and reliable method of advanced water treatment. Reuse applications have been particularly challenging for water treatment chemical companies as these highly variable feedwaters can contain any imaginable constituent, resulting in a wide array of site specific foulants. By Karen Lindsey, V.P. Operations, Avista Technologies, Inc.
Hydro-Guard® Improves Water Quality And Saves Man-Hours For Central Texas Vacation Community
The user population of the Horseshoe Bay Water Distribution System does not reach its peak until summer and the resultant levels of peak and low usage vary widely.
Desalination Serves Coastal Argentine City
When a series of water crises in 2014 disrupted conventional utility services in the coastal Argentine city of Caleta Olivia, the city needed a way to ensure an uninterrupted water supply.
Project Profile: Lakeview Estates Community Durand, MI AD26 Arsenic, Iron & Manganese System In August, 2007 AdEdge Technologies, Inc. was selected among other vendors by Tri-County Drilling to supply an arsenic, iron, and manganese treatment system for the Lakeview Estates MHP in Durand, Michigan. By Adedge Technologies Inc.
Case Study: Biological Filtration For Iron And Manganese Removal
In an earlier paper, the author reviewed the physical and chemical processes conventionally used to remove iron and manganese from groundwater, and explained how the process most commonly used in France (aeration plus filtration) led to the discovery of coincident biological phenomena. These were subsequently applied to enhance the performance of certain existing units and, especially, to serve as a basis for a new generation of biological treatment plants offering sharply improved performance levels. These general considerations will be illustrated by a number of examples, selected from among nearly 200 existing facilities. By Pierre Mouchet, Manager of Technical Assistance and Information
12 Monitoring Applications That Will Keep A Finger On The Pulse Of Your Water Distribution System
“You can’t manage what you don’t monitor”, an adage first attributed to Lord Kelvin applies to practically everything, including water distribution systems.
DRINKING WATER APPLICATION NOTES
Monitoring Aromatic Organics For Optimizing Coagulation
With the increasing awareness about the negative effects of organics within the water and wastewater treatment process along with increasingly strict water quality regulations, the need for more effective organics removal is becoming more important.
Organics Monitoring (TOC)
Total organic carbon (TOC) testing is the traditional method for determining organic matter in water. However there is a far more practical, affordable and often more useful way to measure organic matter. UV absorbance testing (UVA) is rapidly becoming the preferred method of measuring organics even when the levels of organics being measured are very small.
Technical Note: Using Liqui-Cel® Membrane Contactors To Solve Resistivity Problems In A High Purity Water Loop Pureflow, Inc. is a Southeastern-based expert in designing complete water treatment systems as well as providing value-added solutions for fixing operational issues in existing systems. Pureflow teamed up with Membrana to help solve an operational issue at one of their customer’s facilities. By Membrana
Monitoring Nitrates In Drinking Water And Wastewater
Nitrate is present in high levels in wastewater due in part to the high nitrates present in human sewage but also from some types of industrial effluent entering the municipal sewer system.
Hach LDO® Technology Improves The Efficiency Of Pharmaceutical Plant’s Wastewater Treatment Process
Bristol-Myers Squibb (BMS) is a global pharmaceutical and related health care company with the mission to extend and enhance human life. One of the company’s oldest and largest facilities was built in 1943 in East Syracuse, New York, when BMS was one of 12 companies chosen by the federal government to mass produce penicillin.
Application Note: Ozone Measurement In Potable Water Ozone is a powerful oxidizing agent that can be used to destroy the organic compounds that affect the taste and odor of potable water. Environmental concerns have led to increased use of ozone because, unlike chlorine, it does not form hazardous by-products. By Emerson Process Management, Rosemount Analytical
Comparison of UV vs. Sodium Hypochlorite (Fact Sheet)
Hypochlorite has some significant environmental concerns associated with DBPs and residual toxicity.
UV Technology Offers Solution For Emerging Water Crisis
Many are turning to UV as an effective barrier to enable the reuse of wastewater, for indirect reuse, and aquifer recharge.
Non-Contact Radar Level Meter Improves Reactor Vessel Measurement
A North Carolina-based specialty chemical manufacturer, a major producer of insect repellent, was looking for a better way to measure the liquid level in its glass-lined agitated reactor. The company uses a number of complex technologies to manufacture sebacates, adipates, isophthalates, catalysts, alkyds, and other natural and renewable chemistries based on castor and citrates.
Application Note: Busseron Creek Watershed Partnership Addresses Concerns In A Rural Watershed As with other watershed organizations, the Busseron Creek Watershed Partnership (BCWP) exists because of surface water quality degradation. In this case, those waters drain 163,231 acres of a watershed that crosses the boundaries of Vigo, Clay, Green, and Sullivan counties in West- Central Indiana. By YSI
DRINKING WATER PRODUCTSMore Products
LATEST INSIGHTS ON DRINKING WATER
Arsenic Update: Top Technologies Revealed
The federal regulation for arsenic has been in place since 2002, and yet many utilities remain noncompliant. The culprit isn’t treatment capability, but cost. It happens that the most popular treatment technique is also quite expensive — but it doesn’t have to be.
World Water Week: Water Management Key Priority For International Oil And Gas Sector
The global oil and gas industry association, IPIECA coordinated a session during World Water Week in Stockholm on water management within the sector from now to 2030.
Reaching Zero Liquid Discharge: A Starter’s Guide
Zero Liquid Discharge (ZLD) systems employ cutting-edge technologies to minimize water use within a given industrial facility and maximize the reuse of its processed wastewater. In the perfect ZLD system, no effluent ever leaves the factory, savings are immense, discharge and reuse requirements are met with ease, and the praise of conservation groups is bestowed fervently.
Options To Replenish Depleting Groundwater
It supplies drinking water for more than half of the total U.S. population and greater than 95 percent of the rural population. It helps grow our food because more than 60 percent of it is used for irrigation to grow crops. It's an important component in many industrial processes, and it’s a source to recharge lakes, rivers, and wetlands.
A Preview Of IDA World Congress 2015
From August 30 to September 4, the International Desalination Association (IDA) will be hosting its biennial world congress in San Diego.
5 Tips For The 100-Year Storage Tank
Treatment plant showrunners are constantly looking for ways to conserve. But few realize that one of the simplest ways to save money in the long run concerns the ubiquitous behemoths surrounding the plant. They fail to properly maintain their storage tanks.
DRINKING WATER NEWS
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ABOUT DRINKING WATER
In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA).
Drinking water considerations can be divided into three core areas of concern:
- Source water for a community’s drinking water supply
- Drinking water treatment of source water
- Distribution of treated drinking water to consumers
Drinking Water Sources
Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater.
Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.
Drinking Water Treatment
Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.
There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.
The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.
The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.
During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.
Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.
Drinking Water Distribution
Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.
A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.
Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.