Many owners and operators of traditional decentralized municipal wastewater treatment plants, also referred to as on-site or off-grid treatment, are acutely aware their systems are at risk of becoming obsolete.
The Chief Operator for a surface water treatment plant (SWTP) reports that replacement of a troublesome vacuum liquid feeder for poly aluminum chloride (PACl), with a more advanced vacuum liquid feeder, ended the threat of a process upset for operations staff that was caused by the previous unit not being able to hold a constant feed rate. The ability to provide a consistent feed is needed as a key element in the plant pre-treatment process, which features turbidity reduction and clarification.
In 2008 Texas was facing an extended drought and the City of San Angelo was weighing its alternatives. The City felt the Hickory Aquifer well field was the best water option available, but this water contained significant amounts of radium and iron.
The City of Silverton is known as Oregon’s Garden City and sends one million gallons a day of treated effluent to the Oregon Gardens, returning the remainder to Silver Creek.
In the past several years, Aquarion Water Company had been monitoring their system’s THM formation and attempting to lower them through treatment and distribution system changes. Aquarion engineers decided that reducing THM formation in the Laurel High Service Clearwell at the Stamford Water Treatment Plant (WTP) would eliminate concerns of elevated THM formation in the distribution system served by the WTP.
In late 2005, the City of Newberg, Oregon, decided to upgrade their water treatment plant disinfection process from gas chlorine to on-site hypochlorite generation (OSHG) in an effort to simplify operations and increase operator safety. The plant produced an average of 2.5 million gallons per day (MGD), with a peak capacity of 5 MGD.
The Baia Mare Aurul gold mine in North Western Romania suffered a historic catastrophe in January 2000, when its dam burst, streaming out 100,000 cubic meters of waste water, largely contaminated with cyanide, commonly used in the process of mining gold, into tributaries of the Tisza River, a major waterway in Hungary.
In an effort to lower operational costs and extend the life of the dewatering centrifuge, operators in Springboro, OH, began to look at the polymer activation equipment in use at the plant. The Polyblend® M-Series emulsion polymer activation systems had been in steady operation for over 10 years. The equipment still performed reliably, but operators were interested in ways to achieve greater efficiency. They were aware of the new Polyblend® Magnum mix chamber, with its enhanced two-zone mixing energy.
The Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to UV.
The Lariana Depur wastewater treatment plant in Fino Mornasco, Italy, treats wastewater from multiple textile manufacturers in the Como region, known as the heart of the textile industry. Since 1994, ozone has been used effectively as a polisher to remove the dark blue-purple color — the result of the dyes used in the textile dyeing and printing process — from the water.
Installing and operating an ozone oxidation system for wastewater remediation at a gold mine located in a remote region of Alaska is full of challenges.
Chatsworth Water Works Commission provides both water and wastewater services to the 5,000 residents of the cities of Chatsworth and Eton, GA.
Our membranes and membrane systems reflect the advancements that have been made in the industry over the past three decades.
The proven infrastructure of the TrojanUV3000Plus™ has been continuously refined to enhance friendly operation. The result is more dependable performance, simplified maintenance and maximized UV lamp output at end-of-lamp life. The TrojanUV3000Plus also incorporates innovative features to further reduce operation and maintenance costs, such as variable output electronic ballasts and our revolutionary ActiClean™ automatic chemical/mechanical sleeve wiping system.
The WWETCO FlexFilter™ from WesTech uses compressible media to provide an efficient new solution for CSO, Primary Treatment, Tertiary Treatment and Industrial Water Pretreatment. The FlexFilter™ is a simple gravity system with a robust design requiring no moving parts. The combination of tapered media compression, porosity gradient within the media bed and a low flow backwash system make the WWETCO FlexFilter™ one of the most versatile and efficient filters on the market.
LuminUltra Wastewater (QG21W) is the key to a new level of efficiency in biological wastewater treatment plant operation! QG21W provides the ability to measure the size of the living biomass population (Cellular ATP, cATP), its relative health (Biomass Stress Index, BSI), and suspended solids activity (Active Biomass Ratio, ABR) at any point in the process. Use this information to manage return sludge pumping rates, air and nutrient dosages, and to proactively identify and eliminate toxicity.
The MagnaPak™ System provides a simple, cost-effective solution for meeting EPA disinfection by-product standards by utilizing the MIEX® ion exchange resin to remove dissolved organic carbon – a precursor to DBP formation – from the raw water supply
Unlike traditional pipe systems, the Brentwood SedVac cleans all the way down to the basin floor without clogging. SedVac’s unique design funnels the sludge and scrapes the floor, resulting in consistent solids removal of 3 percent concentration while wasting less water than traditional pipe systems. These features mean less interruptions in production and no more hosing down your basin.
VigorOx® WWT II is a strong wastewater disinfectant for use in wastewater treatment that can replace chlorine or improve the performance of a UV system. VigorOx WWT II, a peracetic acid (PAA)-based formulation, is an equilibrium mixture of acetic acid (vinegar), hydrogen peroxide and water.
The NeoTech Aqua Disinfection Series is specially designed to disinfect water and is an essential component in advanced oxidation processes.
As water reuse becomes increasingly common, more utilities will get to know ozone. To explain its role in water treatment schemes, Water Talk welcomed Jim Lauria, Vice President of Sales and Marketing at Mazzei Injector Company, and Ben Kuhnel, Senior Project Manager for Arcadis. Learn how ozone works in concert with other processes to safely recycle water and treat contaminants of emerging concern — even in mobile/on-site applications.
If you don’t need the performance of an ultrafiltration membrane but also want to avoid the large footprint of a conventional media filter, you might want to consider FiltraFast extreme rate compressible media filters. As Ryan Hess, Director of Advanced Separation with SUEZ Water Technologies suggests in this Water Talk interview, “They provide roughly ten times the hydraulic loading rate of conventional media filters.”
Of all the process considerations facing wastewater treatment operators, disinfection is one of the most important. In this exclusive Water Talk interview, Gary Lohse, Technical Sales Manager, Disinfection with De Nora Water Technologies, discusses how disinfection has become increasingly complex over time. Lohse reviews a host of selection criteria including target microorganisms, control strategies, disinfection by-products, capex and safety.
The operating ranges for chemical injection need to be large because of the variability of flow in many treatment operations. As Bill McDowell, Vice President of Operations with Blue White Industries explains in this Water Talk interview, “You might be down to as low as 5 or 10 milliliters a minute and then one hour later; you might need to pump 15 gallons a minute out of the same pump and through the same sensor.”
One of the trends in water and wastewater treatment over the past decade has been a growing demand for decentralized systems. Water Talk recently caught up with Nii Mensah, General Manager of Fluence USA, to learn more about the solutions that the new company (formed by the merger of RWL Water and Emefcy) is bringing to market to address communities’ treatment needs
Municipal wastewater treatment has traditionally taken place as far away from the populace as possible. But as people flock to cities and encroach ever closer on these facilities, the practice of extending ever further out becomes impractical and expensive. And as water becomes scarcer, cities the world over are looking at recycling wastewater from their citizenry closer to home.
CFD modeling was used to design, position and validate performance of the new, patented flow conditioning vanes and post-injection blending grid. The same, proven mass transfer mixing nozzles used in the original pipeline flash reactor (PFR), are also part of the PFR+.
Daryl Weatherup, Managing Director at De Nora Water Technologies, gives an overview of De Nora's updated disinfection offerings, including its CAPITAL CONTROLS MCP ozone generator, CAPITAL CONTROLS Chlorinator, and ClorTec onsite hypochlorite generator.
There are a number of water and wastewater disinfection options worth considering, but one of the most advantageous is the use of low concentration on-site sodium hypochlorite generation. Among your OSGH options, ClorTec from DeNora leads the way. Watch the full video to learn more.
Ozone is used widely for water treatment in Europe and Asia. Now, with more than 40 years of global experience, De Nora is bringing CAPITAL CONTROLS Ozone to North America.
A powerful oxidant with fast reaction time, no added chemicals, and reduced disinfection byproducts, Ozone is an appealing and growing option for water and wastewater treatment. Watch the full video to learn more.
Construction took just five months for this ecologically-friendly municipal desalination plant, designed to treat brackish water with high nitrate levels. Watch as the plant manager speaks about the advantages this system has provided.
NeoTech Aqua Solutions Inc., the leader in high-efficiency UV systems for disinfection, Advanced Oxidation Processes, and TOC Reduction in water and water reuse will be participating at the AWWA ACE Conference in Boston, MA, June 8-11, 2014.
The Round Table (RT) of International Shipping Organisations (comprising BIMCO, the International Chamber of Shipping, Intercargo and INTERTANKO) is deeply concerned if the international convention to regulate ships’ ballast water comes into force in the near future without a realistic implementation schedule that recognises the timetable for US type-approved Ballast Water Management Systems (BWMS) to be available in sufficient quantities.
ENSERVCO Corporation (NYSE MKT: ENSV), a diversified national provider of well-site services to the domestic onshore conventional and unconventional oil and gas industries, today announced it has expanded its service mix with the launch of a new water management division -- Heat Waves Water Management, LLC ("HWWM").
RWL Water, a global leader in water, wastewater and reuse solutions and Química Apollo, one of the leading Mexican companies in chemical treatment services to the oil and gas, power and general industries, are pleased to announce the creation of a joint venture in Mexico.
The Jacobi Carbons Group announced recently that its Nattandiya, Sri Lanka production facility has received certification from the Water Quality Association (WQA) under WQA/ASPE/ANSI Standard S-802: Product Sustainability for Activated Carbon.
The TrojanUVSigna will receive the Innovative Technology Award from the Water Environment Federation (WEF), an international not-for-profit technical and educational water quality organization.
Peracetic Acid Market share is anticipated to cross USD 850 million by 2024 according to a new research report by Global Market Insights, Inc.
The webinar, advanced hollow fiber UF membranes improve performance in tertiary water treatment, will help you decide which membrane solution is best for your water treatment system.
Xylem Inc., a leading global water technology company dedicated to solving the world’s most challenging water issues, has been awarded a contract worth more than $500,000 to supply ultraviolet (UV) disinfection solutions to a major municipal water reclamation facility in Singapore.
Ecosphere Technologies, Inc. (OTCBB:ESPH), a U.S. technology licensing and innovative manufacturing company, today announced that it has signed an exclusive technology licensing and equipment purchase agreement with Brasil Clean Energy, a Brazilian environmental services company, to deploy its patented Ozonix® water treatment technology for the Food and Beverage industry in Brazil.
PeroxyChem, a global leader in peroxygen chemistries, plans to construct a new peracetic acid (PAA) production facility in Memphis, Tenn. Construction will begin shortly. A formal groundbreaking was held on December 6 at the Maynard C. Stiles Wastewater Treatment Plant.
TrojanUV has supplied their TrojanUV4000Plus UV disinfection system to Yorkshire Water Services of the UK.
De Nora's global water and wastewater treatment business will exhibit at the 2017 American Water Works Association's Annual Conference & Exhibition taking place June 11-14 in Philadelphia.
The Water Environment Research Foundation will begin new studies addressing Ebola and antibiotic resistance challenges.
During a monthly meeting co-sponsored by the Lake Michigan States Section of the Air and Waste Management Association and the Union League Club’s Environment and Public Affairs Committees, Metropolitan Water Reclamation District of Greater Chicago (MWRD) Executive Director David St. Pierre offered a glimpse into the future of the wastewater treatment agency.
Bio-Microbics is pleased to announce the availability of our new Mobile App for tablets and Smart Phones! We created the Bio-Microbics APP for a direct link to important pages on our Website in a fun and interactive screen.
The global water treatment systems market size is projected to be valued at USD 44.01 billion by 2025, according to a new report by Grand View Research, Inc., exhibiting a 7.1% CAGR during the forecast period. Rising water pollution, along with growing awareness of a healthy lifestyle, is predicted to boost the market.
Wastewater disinfection takes place after primary, secondary and sometimes tertiary wastewater treatment. It is typically a final step to remove organisms from the treated water before the effluent is released back into the water system. Disinfection prevents the spread of waterborne diseases by reducing microbes and bacterial numbers to a regulated level.
A variety of physical and chemical methods are used to disinfect wastewater prior to it being released into natural waterways. Historically, the chemical agent of choice for municipal wastewater treatment has been chlorine, due to its disinfecting properties and low cost. However, the rising cost of chlorine and concerns that low chlorine concentrations can still be toxic to fish and other wildlife, has given rise to more physical methods of wastewater disinfection being adopted such as ozonation or ultraviolet (UV) light.
The use of ozone as a disinfection agent has the added benefit of increasing the dissolved oxygen content of the treated wastewater. However, because the ozone has to be generated, ozonation can require prohibitive up-front capital expenditure compared to traditional chlorination. UV disinfection has been growing in popularity as a wastewater disinfection method, in large part because of the life-cycle economics of the equipment and the fact that, like ozone, there is no toxic residual.
