WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

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.

Wastewater Plant Relies On Thermal Flow Meter For Co-Gen Power Gas Blending Process
Wastewater Plant Relies On Thermal Flow Meter For Co-Gen Power Gas Blending Process

The Rahway Valley Sewerage Authority (RVSA), which operates a large wastewater treatment plant in New Jersey, embarked on a green co-generation waste-to-energy project to power a portion of its operations. The plant’s management team became interested in pursuing the gas-to-energy power co-generation system for both environmental and cost reasons.

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WASTEWATER DISINFECTION PRODUCTS

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. 

High Speed CSO Filtration System High Speed CSO Filtration System

As measures of improving the combined sewer system, this high rate filtration system filters the rain water, which flowed directly to the river before, by using our original filter media. This new treatment system can be installed in the existed facilities and supplies stable filtrations for rainfall flow fluctuation.

UV Package Plant UV Package Plant

Calgon Carbon UV Technologies is pleased to introduce the C3500D/PS Packaged System for UV Wastewater Disinfection. This product uniquely addresses the needs of smaller communities with effluent flows of less than 2.6 million gallons a day.

OMNIPURE™ Series 55/64 Marine Sewage Treatment OMNIPURE™ Series 55/64 Marine Sewage Treatment

Offshore oil and gas operations generate sewage that can contain contaminants which have a detrimental effect on water quality and the overall marine environment. As a result, marine sewage treatment systems are required to lessen the environmental impact.

Model 4200-LC Automatic Gas Feeder Controller Model 4200-LC Automatic Gas Feeder Controller

The JCS Industries Model 4200-LC Automatic Gas Feed Controller feeds gaseous chemicals commonly used for water and wastewater disinfection accurately, reliably and safely.

TOC Reduction TOC Reduction

NeoTech Aqua Solutions provides the most efficient and cost-effective UV systems for destroying Total Organic Carbons (TOC’s) in water.  Whether your destroying NDMA, 1,4-dioxane, TCE, MTBE, urea, endocrine disruptors or other organics, only NeoTech Aqua provides ultraviolet TOC reduction with a treatment chamber optimized for low pressure mercury lamps.  As a result, NeoTech Aqua’s UV systems achieve a three times greater TOC reduction per kilowatt compared to standard UV systems, reducing our clients’ costs and energy consumption. In addition to efficiently generating ample 185 nm UV for TOC reduction, NeoTech Aqua’s TOC reduction systems also generate significant levels of 254 nm UV which serve as a powerful disinfectant, providing you both TOC-free and organism-free product water.

NeoTech D228™ NeoTech D228™

The NeoTech D228™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

Wallace & Tiernan® Analyzers and Controllers Wallace & Tiernan® Analyzers and Controllers

Wallace & Tiernan MFC analyzer/controller offers a broad combination of drinking water analysis and disinfection/chemical control in a single unit.The MFC analyzer/controller offers an easy, software selectable range of control modes from flow proportional, residual control only, compound loop and set point trim enabling precise control of a chlorinator or metering pump to maintain the desired level of disinfection and water quality.

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WASTEWATER DISINFECTION PODCASTS

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.”

Decentralization Grows With Worldwide Property Development Expansion Decentralization Grows With Worldwide Property Development Expansion

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

Converting Wastewater Treatment Facilities Into Botanical Gardens Converting Wastewater Treatment Facilities Into Botanical Gardens

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.

Peracetic Acid (PAA) Disinfection Is Up For The Challenge Peracetic Acid (PAA) Disinfection Is Up For The Challenge

The primary consideration for evaluating disinfection alternatives has to be permit compliance. But as Sarah Stewart, Associate and Senior Project Manager with CDM Smith explains in this Water Talk interview, contact time, high color, nitrates, industrial loads and many other factors all play a role in selecting the most practical and cost effect disinfection solution for your facility.

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WASTEWATER DISINFECTION VIDEOS

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.

CAPITAL CONTROLS® Ozone Generator Video CAPITAL CONTROLS® Ozone Generator Video

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.

Brackish Water Desalination Plant Draws Rave Reviews Brackish Water Desalination Plant Draws Rave Reviews

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.

UV Wastewater Disinfection Trending Up With Advancements, Installations UV Wastewater Disinfection Trending Up With Advancements, Installations

Jen Muller, VP of Marketing for Trojan Technologies, provides an update on two key TrojanUV technologies, the TrojanUVFlex and TrojanUVSigna. The former is designed for potable water reuse applications, including direct potable reuse (DPR), while the latter is ideal for wastewater disinfection as a replacement for chemical disinfectants. Muller shares the features and benefits of both products, and also discusses the TrojanUVSigna's installation at two of North America's largest wastewater treatment plants.

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WASTEWATER DISINFECTION NEWS

ABOUT WASTEWATER DISINFECTION

 

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.