Eastern Municipal Water District (EMWD) serves about 142,000 customers in Riverside County, CA. The EMWD service area is one of the largest for any water district in arid southern California. On the drinking water side, EMWD manages two water treatment plants and over 15 reservoirs. With 70% of the district’s water coming from the Metropolitan Water District with chloramine disinfection, EMWD has become reliant on chloramine disinfection to manage long transmission lines and longer detention times.
“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.
Chemical, petrochemical, and oil-refining plants are process-intensive operations with regulatory requirements to protect the surrounding water and air from the effects of industrial pollution. These external demands are matched by equally compelling internal pressures to address product purification needs, find alternatives to utilizing costly fresh water in production processes, reduce the carbon footprint, and operate efficiently and profitably.
The Jimo, China, municipal wastewater plant was originally designed to treat a combination of municipal and textile wastewater (120,000 m3/d) with Class IB effluent limits for BOD, COD, ESS, TN, NH3-N and TP.
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.
When Flint Michigan discontinued purchasing water from the Detroit Water Authority and began using the Flint River as their raw water source they unfortunately did not consider the potential impact on lead and copper corrosion and the impact on the public.
The Mountain Regional Water District is a Special Service District of the county that was established by the Summit County Commission in 2000 to regionalize water service by consolidating several public and private water companies.
Chatsworth Water Works Commission provides both water and wastewater services to the 5,000 residents of the cities of Chatsworth and Eton, GA.
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.
Traditionally, steam flow has been measured with a differential pressure device. This is typically an orifice plate. However, such devices are inherently volumetric flow measurements. As we have discussed in previous blog posts, changes in pressure and temperature will change the mass flow rate of steam.
Originally built to treat 10 million gallons per day (MGD), the Quail Creek Water Treatment Plant in Washington County, Utah, now has an operational capacity of 60 MGD and a design capacity of 80 MGD.
Electrical conductivity is the most convenient method for testing RO water quality and membrane performance. Pure water is actually a poor electrical conductor. The amount of ionized substances (salts, acids, or bases) dissolved in water determines its conductivity. Normally, the vast majority of the dissolved minerals in tap, surface or ground water
UV disinfection systems disinfect water using UV light at the 254 nm wavelength. UV light at this wavelength actually destroys the DNA of microbiological material in the water which prevents dangerous viruses such as cryptosporidium and e-coli from reproducing and causing harm.
QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.
Two new particle detecting technologies have been developed to help optimize filter performance at water treatment plants (WTP).
In order to reduce the formation of harmful disinfection byproducts in drinking water, alternative disinfectant use has become increasingly widespread. Monochloramine is a leading alternative disinfectant that offers advantages for municipal water. This tech brief details the removal of monochloramine using activated carbon.
Chloramination, a process often used for disinfection of drinking water and wastewater, involves mixing chlorine and ammonia to form chloramines. The relative concentrations of both chlorine and ammonia are essential for optimum disinfection.
The water municipality at a mid-size city in the Western region of the U.S. serving a population of about180,000 people needed to address a chlorine disinfection system problem at one of its water treatment plants.
Designed to be the most flexible, easy to use, and easy to see multi-parameter controller on the market, the 2250 and 2250 TX excels in measuring Conductivity, pH, ORP or Flow.
The TU5 Series benchtop turbidimeters for drinking water and other pure water applications feature a revolutionary 360° x 90° Detection Technology™, engineered to see more of your sample than any other turbidimeter. This unique technology is used in both the TU5 online and TU5 benchtop turbidimeters, allowing you for the first time to remove the uncertainty of which measurement to trust. The 360° x 90° Detection delivers the best low level precision and sensitivity while minimising variability from test to test.
With more than 25 years of ion exchange treatment process experience, De Nora Water Technologies has designed the SORB 07™ nitrate removal system to treat nitrate (NO3) contamination in ground water supplies.
Perfluoroalkyl Compounds: Perfluorooctane Sulfonic Acid (PFOS) and Perfluorooctanoic Acid (PFOA) Treatment.
Trusted measurement for high range turbidity applications; simplified.
The new TL23 Series laboratory turbidimeters blend trusted technology and improved features to simplify testing in the most demanding industrial and wastewater applications.
The JCS Industries Model 4200EC Gas Vacuum Chemical Feeder mixes and feeds gaseous chemicals commonly used for water and wastewater disinfection accurately, reliably and safely. The system is comprised of a vacuum injector to safely introduce the gas into the feed-water stream, a reversing servo motor coupled with a V-notch valve to regulate the chemical flow rate, and a control module for complete electronic control and communications.
Mobile-enabled geographic information systems (GIS) herald a new age for bacterial source tracking, allowing increased stakeholder involvement, more informed decision-making, and enhanced water quality.
Utilities using ozone for disinfection must meet strict regulatory requirements for bromate. MilliporeSigma has been in the business of improving analytical equipment to make life in the lab more efficient and cost-effective for many years. Water Online spoke with MilliporeSigma about a new method for measuring bromate in drinking water.
Tuesday, August 9, at the Maria Lenk Aquatics Centre started like many others have recently. Athletes and coaches were preparing to compete, fans were arriving to cheer on their countrymen/women, and event managers were working away at the thousand and one tasks that needed to happen at their facility so the world could watch a full day of world class swimming, diving and water polo.
My first full-time job after obtaining my degree in Chemical Engineering started out intimidating, but who ever thought starting off a career in applied microbiology would be easy. As I move through the introductory period of my position — where learning all I can about the field is of top priority — the intimidating nature of the field has started to diminish.
Utilities are under constant pressure to reduce costs, meet regulatory requirements, and improve sustainability. Finding the best way to meet these goals is a constant challenge. Endress+Hauser has been helping water and wastewater utilities achieve their objectives for many years, and spoke with Water Online to discuss how to save
energy in today’s wastewater treatment facilities.
Many treatment facilities test for chemical oxygen demand on a regular basis. Some laboratory test methods can be time consuming and expose technicians to toxic chemicals. In addition, interference from components in the samples may affect the test results. MilliporeSigma is a global leader in the life science industry and has produced test kits to measure numerous analytes. Water Online spoke with MilliporeSigma about advances in measuring chemical oxygen demand
Appearing on The Weather Channel's "Wake Up With Al" morning show, water expert Dan Theobald puts drinking water to the test by measuring total dissolved solids (TDS) in tap water samples from Brooklyn, Manhattan, and New Jersey, as well as bottled water samples.
The YSI Pro2030 DO/conductivity water quality meter is ideal for any field application. The instrument is rugged and extremely simple to use.
TrojanUV is dedicated to providing the world with more efficient, environmentally-friendly water treatment solutions. This video shows how we’re helping municipalities deliver water confidence to their communities.
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.
