Since water is an essential element in food or beverage operations, reusing it can reduce a business’s water usage ratios, help meet sustainability goals, lower supply risk and contribute to cost savings, making it a top priority for many companies today.
DRINKING WATER CASE STUDIES AND WHITE PAPERS
Aquatech Supplies Zero Liquid Discharge System In Puerto Rico Due To Environmental Regulations
AES Puerto Rico Cogeneration Plant (AESPR) is a cogeneration power plant that produces 454 MW of net electricity in its fluidized bed boiler plant in Guayama, which is sold to the Puerto Rico Electric Power Authority (PREPA).
White Paper: The Leopold® Clari-DAF™ System For Membrane Pretreatment The idea that membranes could be used for solids removal and concentration in potable water treatment schemes has been known for hundreds of years. It has only been in the past 50 years or so that reverse osmosis membranes for treating brackish waters or sea water have been considered a cost-effective viable alternative. More recently, the membrane suppliers have produced low-pressure membranes that are applied in current treatment process schemes to enhance the water quality effluent required to meet additional regulatory guidelines
CleanFlo™ Monoscreen® Case Study
When the polar bears at the Brookfield Zoo were introduced to their new habitats at the Great Bear Wilderness, they had no idea how much more fulfilling their life would become.
Using Granular Activated Carbon To Meet DBP Regulations
The Roche Harbor Water Treatment Plant is located on the northwest side of San Juan Island in San Juan County, Washington state. Although a significant part of the land in the county is privately owned, the watersheds there provide a public benefit for both residents and visitors. San Juan Island’s economy is tourist-driven; the island was voted #2 on the New York Times list of “41 Places to go in 2011.” Its marina has been a top boating destination for more than fifty years. Incorporated in 1886, the community has seen slow but steady population growth in recent decades. Roche Harbor Water System Inc. has been in operation since 1968 when PVC piping replaced the island’s existing wooden pipe system.
Concrete Manufacturing Operation Meets Permit Requirements With PH Control System
In order to meet its discharge permit limits, a ready-mix concrete manufacturing operation needed to neutralize its high pH process water. Staff installed a control system that automatically detects a rise in pH and treats the water with a modular in-line carbon dioxide feed system. The operation can now recycle treated water for rinsing trucks, supply recycled water into the concrete batching operation, and safely discharge the water into the environment.
Advanced Diagnostics of Thermal Mass Flow Meters
Many thermal mass flow meters are of the insertion type. As a starting point, proper insertion depth and straight run per the manufacturer’s recommendations should be adhered to.
Pulp And Paper Manufacturer Significantly Increases Production While Complying With Discharge Limitations
A U.S.-based pulp and paper manufacturer required high purity process and boiler feed water. It was using water from a local well and treating it with a 150 gpm conventional RO system operating at 75% recovery, but this was creating 50 gpm of wastewater – over 26 million gallons per year.
The Next Generation In Water Filtration For The Oil And Gas Industry
There is a need in many segments of the oil and gas production industry for an improvement in water filtration over traditional methods. By Michael Dejak, P.Eng.
Aquatech Treats A Tertiary Effluent Wastewater Project In India To bridge the gap between demand and supply and to have reliable power supply to the capital city of Delhi, a 330 MW combined cycle Gas Turbine Power Project - Pragati Power Project (PPP) – was set up on a fast track basis. By Aquatech International Corporation
A Golden Spike In Revenue, Efficiency, And Customer Service
Situated in Utah’s high desert at the base of the Wasatch Mountains, Ogden City lies approximately 40 miles north of Salt Lake City and 10 miles east of the Great Salt Lake.
DRINKING WATER APPLICATION NOTES
Advanced On-Line Instrumentation Helps DAF Systems Lower Costs
Many food processors use dissolved air flotation (DAF) to remove fats, oils and grease (FOG) and suspended solids from their wastewater streams.
Analysis Of Pesticide Residue In Spinach Using The AutoMate-Q40 An Automated QuEChERS Solution
QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.
Wireless PRV Monitoring Application Note
Pressure reducing valves (PRVs) are used throughout water distribution systems to reduce pipeline pressure to a predetermined set point. This decreases water loss and prevents pipe breaks.
Defining Drinking Water Plant Backwash Profile Using The SOLITAX™ Sc Suspended Solids And Turbidity Sensor
Today’s drinking water plants have many challenges to meet as they produce water for a fast-growing and increasingly demanding population.
Application Note: Using Real-Time Telemetry For Ecological Monitoring Of Coastal Wetlands The Grand Bay National Estuarine Research Reserve (NERR)in Mississippi is one of 27 protected estuarine reserves across the United States. By YSI
Application Note: YSI 600 Optical Monitoring System Used To Protect Lake Oconee, Georgia Water Quality Northern Georgia is experiencing unprecedented development; consequently, water quality in many of its watersheds is in jeopardy of severe degradation. The State of Georgia, Environmental Protection Division (EPD) has implemented an NPDES monitoring and enforcement program designed to prevent construction activities from impacting water quality
How To Read An Encoder
The HR-E LCD encoder has a 9-digit Liquid Crystal Display (LCD) to show consumption, flow and alarm information. The display automatically toggles between 9-digit and 6-digit consumption, rate of flow and meter model.
Application Note: YSI Water Quality Monitoring Buoys Help Connecticut DOT Protect The Housatonic River When replacement of the Sikorski Bridge spanning the Housatonic River was authorized, Paul Corrente and the Connecticut Department of Transportation (CT-DOT) set about the design and development of a water quality monitoring program to monitor the contractor’s in-water activities to insure full protection of the river from perturbation
Application Note: Continuous Monitoring Of Drinking Water Provides Assurance Of Safety A water utility in Ohio wanted to learn more about the variability of water quality parameters such as pH, ORP, turbidity, and chlorine. Previously, most of these parameters had been measured by spot sampling protocols with only a few measurements during a daily period. In order to more accurately assess the water variability, the utility used a YSI 6920DW Drinking Water Multiprobe
YSI 600 Optical Monitoring System Used To Protect Lake Oconee, Georgia Water Quality Northern Georgia is experiencing unprecedented development; consequently, water quality in many of its watersheds is in jeopardy of severe degradation. The State of Georgia, Environmental Protection Division (EPD) has implemented an NPDES monitoring and enforcement program designed to prevent construction activities from impacting water quality
DRINKING WATER PRODUCTSMore Products
LATEST INSIGHTS ON DRINKING WATER
Matt Damon Wants You To 'Buy A Lady A Drink'
Oscar-winner and A-list actor Matt Damon was at the Sundance Film Festival recently, and he used the platform not to announce his next movie role, but rather his latest initiative as co-founder of Water.org.
WWEMA Window: 'Buy American' March To The Sea
Many of you may have grown up in the decades where your perfectly reasonable teenage parental “ask” was met with the story of lemmings blindly following their leader over the cliff to their death at sea.
Everything You Need To Know About Microbial Risk Assessment
The answer to the question “How bad could it be?” is within your grasp, compliments of the U.S. EPA.
Bill Gates Drinks Poop Water, Serves Notice
Credit where it’s due: I didn’t develop the information I’m sharing — but it’s too good to merely retweet or “like.” My enthusiasm stems from one of the world's most famous, influential, and capable people bringing widespread attention to typically underappreciated water issues.
Sulfate Removal Technologies: A Review
Sulfate concentrations in water have come under increasing scrutiny from regulatory authorities over the past two decades.
Busted Pipes: D.C. Demonstrates The Rule, Not The Exception
Commuters in Washington D.C. woke up recently to an abundance of water. While this hardly seems problematic to those in parts of the world that grapple with drought, contamination, and other water safety issues, water is only beneficial when it arrives to the right place, at the right time, and safe for consumption.
DRINKING WATER NEWS
DRINKING WATER VIDEOSMore Drinking Water Videos
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.