Ammonia is a naturally occurring compound of nitrogen and hydrogen. As a key ingredient in many fertilizers, the most common way that it infiltrates source water and causes water treatment plant (WTP) problems is as agricultural runoff. Fortunately, new biological treatments can now handle ammonia and frequently co-occurring compounds such as iron and manganese all in one process.
Filtration OEMs can use built-in device diagnostics to monitor and maintain automation component performance.
Contact ultrasonic level switch technology was first applied to process control in the 1960s – and continues to provide accurate and reliable liquid level measurement in virtually every process industry today.
Ozone has been a proven effective method of water treatment and disinfection for well over a century.
Most treatment systems for removing iron and manganese from groundwater sources use chlorine, oxygen or various other chemicals to oxidize the clear state of iron and manganese to an oxidized or solid form so the particles can then be filtered out. If complete oxidation occurs and if the oxidized floc is of suitable condition, a filtration system consisting of filter sand and anthracite is used.
Small batches and multiple products in the same plant — these are the market demands to which more and more manufacturers need to adjust. The answer is based on the "Lego principle."
“You can’t manage what you don’t monitor”, an adage first attributed to Lord Kelvin applies to practically everything including water distribution systems.
When California capped chromium-6 in drinking water at 10 ppb in 2014, it became the only state to set a chromium MCL and, in so doing, created a challenge for water providers across the state. WRT (Water Remediation Technology LLC) has met that challenge with the SMR™ (Selective Metals Reduction) Process.
MidCoast Water delivers water and sewerage services to 40,000 households in the Manning, Great Lakes, and Gloucester communities of New South Wales in Australia. It also supplies 8 billion liters of water a year to Karuah in the south, Crowdy Head in the north, and Gloucester in the west.
Water and wastewater leaders are unsung heroes. Clean, safe water is essential to human life and to the well-being of the environment, yet it is grossly underfunded. Limited resources lead to deferred maintenance and difficult decisions.
There are various treatment processes that are used to remove iron and manganese from ground water for potable water supplies. Iron and manganese are typically found in groundwater in a dissolved state and the water may appear clear. While there are various less common treatment methods used (such as ion exchange), most treatment systems for iron and manganese oxidize the ferrous state (clear iron) to a ferric state so the solid particles can then be filtered out.
One of the most important measurements in the determination of the health of a body of water is its dissolved oxygen content. The quantity of dissolved oxygen in water is normally expressed in parts per million (ppm) by weight and is due to the solubility of oxygen from the atmosphere around us.
Being able to accurately measure both the quantity and rate of water passing through a water distribution system is crucial to gaining an informed understanding of overall efficiency. As such, achieving a measurement that is exact as possible can have a significant impact on key areas including supply planning, maintenance and resource deployment, leakage detection and rectification and the overall environment, in terms of controlling abstraction and reducing unnecessary draw on natural resources.
The task of managing the quantity and quality of potable water is unimaginable without online instrumentation to help water utilities to measure, treat and deliver drinking water to consumers. ABB’s Aztec 600 colorimetric and ion-selective electrode (ISE) analyzers have been designed to measure the key parameters that affect water quality – aluminium, iron, manganese, phosphate, color, ammonia and fluoride.
Hexanal is one of many well-documented aromatic components that contribute to flavor and aroma in common consumer food products containing omega-6 fatty acids. Hexanal content is also used to measure the oxidative status of foods rich in omega-6 fatty acids.
SUEZ Water Technologies & Solutions designs and manufactures Sievers Total Organic Carbon (TOC) Analyzers that enable near real-time reporting of organic carbon levels for treatment optimization, quality control & regulatory compliance. TOC has a wide range of applicability at a drinking water plant, and therefore any drinking water utility — large or small — can measure TOC in their laboratory or online in their treatment process.
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.
The pressures of supplying a growing global population mean that the world’s water supplies need to be managed more closely than ever.
A seawater treatment plant was designed as one of the solutions to the recent water scarcity problems. Fresh and drinkable water isn’t easy to find in some places. As the world’s population grows and industrial production increases, even the largest of the world’s freshwater sources can eventually become strained. Therefore, desalination is meant to expand our sources of water across the world.
In water and wastewater treatment, chemistry is king. Treatment options are evaluated depending on the quality of water to be treated and the treatment application. Treatment systems including AOP systems, are designed to specifically target certain contaminants and remove or reduce them from the water. This takes places through the power of chemical reactions. Even biological treatments involve chemistry at their core.
A Q&A with scientist Jeff Urban, who explains forward osmosis and how Berkeley Lab is pushing the frontiers of this emerging technology
In February 2019, De Nora announced the acquisition of MIOX® Corporation, an Albuquerque-based electrochemical expert. Five months later, Bryan Brownlie, Managing Director – De Nora Water Technologies Texas LLC, answers some of the key questions we have been asked about the rationale for the acquisition and the changes that have happened since.
Advanced oxidation is a rather complex wastewater treatment process. The general concept of how the process works can be difficult to grasp at first, and the number of possible oxidation methods can seem daunting. Therefore, you turn to the internet for information, and try to analyze together all the information you find using various online resources. However, everything doesn’t always fit right, and you come up with ideas that may not be quite true.
Water utilities with highly successful monitoring programs tend to share a common trait: they have a well-defined plan for calibration that emphasizes frequency and tracking. However, when done properly, this process is time-consuming and often leads to unnecessary labor and downtime. The good news is that advanced metering technology is available for plants to get a better handle on the instrument’s performance with significantly less effort.
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.