WASTEWATER CONTAMINANT REMOVAL WHITE PAPERS & CASE STUDIES

Replacement Vacuum Liquid Feeder For Poly Aluminum Chloride Ends Feed Reliability Problem For SWTP
Replacement Vacuum Liquid Feeder For Poly Aluminum Chloride Ends Feed Reliability Problem For SWTP

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.

  • Textile Wastewater Treatment — An Application To Sustainably Reuse Water In The Textile Industry
    Textile Wastewater Treatment — An Application To Sustainably Reuse Water In The Textile Industry

    The textile industry is a water consumption intensive industry. Water is utilized for cleaning the raw material, and for the different steps in the textile dyeing process. Due to the effects of water scarcity and stricter environmental regulations, the cost of fresh water utilization has increased worldwide.

  • Connecticut Water Utility Successfully Removes 45% Of Trihalomethanes (THMs) With Quick-Turnaround Clearwell Intervention
    Connecticut Water Utility Successfully Removes 45% Of Trihalomethanes (THMs) With Quick-Turnaround Clearwell Intervention

    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.

  • Standardizing On-Site Hypochlorite Generation Disinfection Technology In Water And Wastewater Treatment Plants Increases Safety And Eases Operations
    Standardizing On-Site Hypochlorite Generation Disinfection Technology In Water And Wastewater Treatment Plants Increases Safety And Eases Operations

    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.

  • World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution
    World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution

    Nutrient pollution is getting worse in many estuaries throughout the United States, especially those on the heavily populated East Coast.

  • On-Site Sodium Hypochlorite Generation Replaces Hazardous Cyanide In Precious Metal Extraction
    On-Site Sodium Hypochlorite Generation Replaces Hazardous Cyanide In Precious Metal Extraction

    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.

  • Denitrification Filters Meet Strict, Varying Nitrogen Limits
    Denitrification Filters Meet Strict, Varying Nitrogen Limits

    The cities of Littleton and Englewood, CO, just south of Denver, share a wastewater plant — the Littleton/Englewood advanced wastewater treatment (AWT) plant located in Englewood. The 7886 m3/hr (50-mgd) Littleton/Englewood AWT plant serves more than 300,000 residents in the Denver metropolitan area. The facility also receives sewage from 21 districts within a 75 square mile service area. Plant effluent is discharged to the Denver metro area’s major watershed, the South Platte River.

  • Award-Winning Design Helps WWTP Protect Chesapeake Bay Watershed
    Award-Winning Design Helps WWTP Protect Chesapeake Bay Watershed

    Arlington County’s Water Pollution Control Plant (WPCP) in South Arlington, VA, is located on 35 acres of land squeezed into a commercial/residential neighborhood less than a mile west of Ronald Reagan Washington National Airport. The facility treats flows from nearly all of Arlington. In addition, nearly 20 percent of the plant’s flow comes from neighboring localities such as Alexandria, Fairfax County, and Falls Church. Effluent from the plant is discharged into Four Mile Run to the south, which feeds into the Potomac River and, ultimately, the Chesapeake Bay.

  • Methanol Dosing Technology Helps Denitrification System Pass Rigorous Performance Test
    Methanol Dosing Technology Helps Denitrification System Pass Rigorous Performance Test

    In 2007, Greenville, SC-based Western Carolina Regional Sewer Authority (WCRSA) conducted a rigorous performance test on a new tertiary treatment technology to assess its ability to effectively remove nitrate-nitrogen (NO3-N) without using excess amounts of methanol at its Lower Reedy Wastewater Treatment Plant (WWTP).

  • Denitrification/Filtration Technology Helps Wastewater Treatment Plant Meet China’s Stringent Class 1A Standards
    Denitrification/Filtration Technology Helps Wastewater Treatment Plant Meet China’s Stringent Class 1A Standards

    As a result of China’s rapid economic development in recent years, the country has implemented more stringent environmental standards. Local environmental protection departments now require most urban wastewater treatment plants (WWTP) to apply strict enforcement measures to meet Class IA effluent discharge standards according to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).

  • Polymer Activation Equipment Upgrade Yields Consistent Polymer Savings Of Over 13%
    Polymer Activation Equipment Upgrade Yields Consistent Polymer Savings Of Over 13%

    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.

Pure Oxygen Injection Into A Pipeline
Pure Oxygen Injection Into A Pipeline

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.

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WASTEWATER CONTAMINANT REMOVAL PRODUCTS

AquaStorm™ Cloth Media Filter AquaStorm™ Cloth Media Filter

The AquaStorm™ cloth media filtration system is designed as an economical and efficient solution for the treatment of wet weather applications. This system utilizes a disk configuration and the exclusive OptiFiber PF-14® pile cloth filtration media to effectively filter high solids waste streams with and without the use of chemicals as determined necessary for application-specific water quality. This system is ideal for wet weather applications due to its proven removal efficiencies and high quality effluent, even under varying influent conditions.

SUBRE: Submerged MABR Solution SUBRE: Submerged MABR Solution

SUBRE, a highly effective upgrade solution for wastewater treatment plants, intensifies the biological nutrient removal process and increases plant's capacity with no added footprint and reduced energy requirements. SUBRE utilizes Fluence’s Membrane Aerated Biofilm Reactor (MABR) technology to achieve a stable and high quality effluent.

Pipeline Flash Reactor Plus (PFR+) Pipeline Flash Reactor Plus (PFR+)

Today’s high dosage ozone systems, such as those required by water reuse projects, place extraordinary energy and mixing demands on ozone mass transfer. Mazzei utilized multiphase computational fluid dynamics (CFD) analyses to develop the new PFR+ to address these challenges.

Liquid Analytical Measurement Liquid Analytical Measurement

Environmental protection, consistent product quality, process optimization and safety –​ just a few reasons why liquid analysis is becoming increasingly essential. Liquids such as water, beverages, dairy products, chemicals and pharmaceuticals have to be analyzed day in and day out. We support you in fulfilling all these measuring tasks with application know-how and cutting-edge technologies. Discover our comprehensive portfolio and choose the product best suited to your process needs.

Reliable. Flexible. Experienced. Ozone And Advanced Oxidation Reliable. Flexible. Experienced. Ozone And Advanced Oxidation

De Nora offers reliable, robust and proven ozone solutions to ensure peace of mind, backed by extensive global experience.

OMNIFLO® Sequencing Batch Reactor (SBR) MAX System OMNIFLO® Sequencing Batch Reactor (SBR) MAX System

Evoqua's OMNIFLO® SBR MAX system with Jet Tech technology combines the benefits of a true-batch SBR with the benefits of a continuous fill batch reactor process to treat wastewater influent flows to over 5 times design.  The OMNIFLO SBR MAX system optimizes hydraulic handling during storm flows, reduces equipment sizing and cost, and can trim energy costs over 15%!

Aspiral™ Packaged Wastewater Treatment Solution (MABR) Aspiral™ Packaged Wastewater Treatment Solution (MABR)

Aspiral™ is a smart, packaged wastewater treatment solution based on the Membrane Aerated Biofilm Reactor (MABR) technology.

Next Gen Capital Controls® Chlorinators Next Gen Capital Controls® Chlorinators

The unique compact design incorporates the best existing Capital Controls® technology with exciting new features. With just three models ranging from 10-10,000 lbs/day capacity, each chlorinator is available with automatic or manual feed and a 10” flowmeter for an easier read. Sonic operation on the 4100 model eliminates the need for a differential pressure regulator. On all automatic models, an additional controller isn’t needed, reducing components – and costs. 

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WASTEWATER CONTAMINANT REMOVAL PODCASTS

Capacitive Deionization Takes Off Capacitive Deionization Takes Off

Capacitive deionization (CDI), sometimes called electrochemical demineralization, is referred to as Radial Deionization (RDI) by Atlantis Technologies, which has developed a proprietary form of the process. If you haven't heard of it by any name, or would like to know more about its considerable treatment capabilities, tune into this interview with Patrick Curran,

The Expanding Role Of Ozone The Expanding Role Of Ozone

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.

A Fresh Look At Membrane Bioreactors A Fresh Look At Membrane Bioreactors

Membrane bioreactors (MBRs) are not new, but they are the subject of renewed interest among utilities, and for Carollo Engineers Vice President Andrew Gilmore. He sat down with Water Talk's Todd Schnick and Kevin Westerling to discuss the MBR renaissance and the reason for their rise in popularity.

Ozonia M and FiltraFast Provide New Options For Treatment Facilities Ozonia M and FiltraFast Provide New Options For Treatment Facilities

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.”

Getting Chlorine Disinfection Right Getting Chlorine Disinfection Right

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.

Drumming Up Chemical Injection Drumming Up Chemical Injection

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.”

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WASTEWATER CONTAMINANT REMOVAL VIDEOS

Sidestream Injection System With Pipeline Flash Reactor + Sidestream Injection System With Pipeline Flash Reactor +

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+.

Metal-Free Micromotor May One Day Clean Wastewater

Researchers made tubular metal-free micromotors that swim around in water when hit with light.

Disinfection Solutions From De Nora Disinfection Solutions From De Nora

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. 

ClorTec  For On-Site Sodium Hypochlorite Generation ClorTec For On-Site Sodium Hypochlorite Generation

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.

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WASTEWATER CONTAMINANT REMOVAL NEWS

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