An unusual culprit has been identified as the source behind rotten smelling water in Austin, Texas. Though the source of the smell was surprising, at least it wasn’t too difficult to deal with.
Iron is one of the earth's most plentiful resources, making up at least five percent of the earth's crust. In well water iron is usually found as ferrous iron, which is in a dissolved state and may appear clear when first drawn from the tap.
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.
Water Surge could cause damage in a water conveyance system, from leaking pipes to serious breakdowns and accidents the consequences of which could lead to heavy financial costs and even loss of life. There are various solutions that are able to prevent or reduce the damage. It is important to know the differences between the solutions, and the advantages and disadvantages of each technology, before recommending the most suitable solution for the system.
Harmsco Filtration Products conducted a test to evaluate the performance of the Anti-microbial filter media verses Standard filter media. Two cartridges were compared, both were manufactured with 4 oz filter media, one of the cartridge’s media contained Silver Zeolite fibers which inhibit the growth of biologicals in and on the filter cartridge.
Tampa Bay Water’s state-of-the-art surface water treatment plant has provided high-quality drinking water to the Tampa Bay region.
A landfill operator’s leachate treatment plant in Missouri required pH reduction following lime-softening and prior to the biological wastewater treatment process. Carbon dioxide (CO2) was chosen as a substitute for sulfuric acid due to improved process control and a reduced tendency to form scale.
The versatility of 2nd Generation ATP monitoring technology enables it to be applied to a wide range of situations involving many sample types in many industries, from anaerobic sludge to paint products to ultra-purified water.
The Philadelphia Water Department (PWD) is a municipal utility providing a population of nearly 1.7 million people in three eastern Pennsylvania counties with integrated water, wastewater, and stormwater services. The utility is responsible for planning, design, construction, operation, and maintenance of the necessary infrastructure.
A year long pilot study was performed at an indoor commercial pool in Geauga County Ohio. The testing included an extensive evaluation of common and widely available granular filtration medias and compared the performance results in real time. The intent of the study was firstly to compare the real time turbidity removal capabilities of the various medias and secondly assess the removal ability of cryptosporidium sized particulate (2-5 micron). This assessment also included a polystyrene microsphere challenge on selected well-seasoned medias to compare the ability of the medias to remove crypto sized particles.
The Francis L. Hatch water filtration plant is in the coastal town in York county Maine and has an average capacity of 2.6 MGD. This is a surface water plant that utilizes hydrated or “slaked” lime (calcium hydroxide) to maintain the pH level around 7.0. For over 25 years, the district has used two of the UGSI Chemical Feed model 32‐055 Feeders to mix dry hydrated lime with water to create a lime slurry solution that can then be added to the finished water treatment.
The amount of insoluble matter present in drinking water is an essential quality indicator. Silt, sand, bacteria, spores, and chemical precipitates all contribute to the cloudiness or turbidity of water. Drinking water (DW) which is highly turbid can be unpalatable and unsafe. Consumption of even low concentrations of certain bacteria and other microorganisms can cause serious health effects. Consequently, an accurate and sensitive measurement of turbidity is vital for ensuring that drinking water is free of these contaminants.
Air stripping technology effectively removes VOCs, THMs, and CO2 for improved adherence to water quality regulations.
Years ago, high purity water was used only in limited applications. Today, deionized (Dl) water has become an essential ingredient in hundreds of applications including: medical, laboratory, pharmaceutical, cosmetics, electronics manufacturing, food processing, plating, countless industrial processes, and even the final rinse at the local car wash.
Water quality laboratories across the nation are faced with both a rising level of water quality awareness amongst the general public, as well as rising costs in water quality monitoring. As a result, laboratories are looking for more efficient ways to provide higher quality monitoring.
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.
Trichloroethylene (TCE) and Tetrachloroethylene (PCE) are two of the most common solvents that contaminate groundwater supplies in the United States. Both solvents see frequent use in the extraction of fat, in the textile industry, in the production of various pharmaceutical and chemical products. TCE is also used as a degreaser from fabricated metal parts, and PCE serves as a component of aerosol dry-cleaning solvents.
Electrodeionization (EDI) is a widely used water treatment process. EDI technology is an electrochemical process that uses ion selective membranes and an electrical current to continuously remove ions from water. The process uses ion exchange resin to remove the ions from the feed stream, producing pure water.
In the developed world, potable water is delivered to people via a complex infrastructure consisting of water catchment, water treatment, water storage (reservoirs, towers), and water distribution (pipes). The first two elements are well understood; what is less understood is what happens to water as it journeys to the tap.
What are some of the biggest global challenges, trends, and opportunities for the smart water sector in 2019? To answer these questions, the Smart Water Networks Forum (SWAN) interviewed four industry experts from Australia, North America, the UK, and India.
Reverse osmosis (RO) systems offer power plant owners and operators a reliable and well-proven water treatment solution. However, designing and caring for an RO system requires a thorough understanding of a plant’s water supply and the technology’s capabilities. The final article of this three-part series will address RO system operation and maintenance best practices.
Using on-site sodium hypochlorite generation technology to make oxidant for water and wastewater treatment is cost-effective, safe, and environmentally responsible. But, as with any piece of equipment, choosing the right one and caring for it properly impacts both life cycle costs and effectiveness. We talked with David McWalters, Field Service Manager-Americas, De Nora, to learn more.
“How can a coastal city that is flanked by an almost endless bank of water have water scarcity problems?”
As industrial facilities continually look for ways to reduce capital costs and decrease installation timelines associated with water treatment and other systems, the practice of containerizing equipment has become more prevalent. A containerized system offers many benefits of lower costs than comparable field erected buildings, faster timelines, and lower field installation requirements.
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 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.