WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

City Of Springfield, MO, Upgrades Disinfection System From Gas Chlorine To On‐Site Sodium Hypochlorite Generation
City Of Springfield, MO, Upgrades Disinfection System From Gas Chlorine To On‐Site Sodium Hypochlorite Generation

In April 2013, City Utilities started up three Microclor Model MC‐1500 skid systems, each rated at 1,500 pounds per day of free available chlorine.

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

Model 4200-EC Gas Vacuum Feeder Controller Model 4200-EC Gas Vacuum Feeder Controller

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.

Aqua ElectrOzone™ Ozone Generation System Aqua ElectrOzone™ Ozone Generation System

Ozone treatment for water and wastewater has been utilized successfully for several decades and continues to be a viable disinfection solution for both municipal and industrial plants, worldwide.

RJ Environmental and Davis Odor Control Solutions RJ Environmental and Davis Odor Control Solutions

In the modern world of wastewater treatment, control of odors has moved from an afterthought to a primary design consideration for most collection and treatment facilities. As communities and other development increases in the areas surrounding these facilities, the need for odor control systems becomes more important.

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.
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.

RapiSand™ Ballasted Flocculation System RapiSand™ Ballasted Flocculation System

The WesTech RapiSand™ ballasted flocculation system is a high-rate clarification process combining rapid mixing and multi-stage flocculation, followed by sedimentation. RapiSand™ sedimentation is extremely fast and can be applied in a wide variety of suspended solids removal applications.

UltraDynamics® Municipal UV Solutions Ground Water UltraDynamics® Municipal UV Solutions Ground Water

The advantages which have made ultraviolet irradiation an effective, and the fastest growing, disinfection technology for wastewater are now available for primary disinfection of municipal drinking water.

Floor Washer System Floor Washer System

The patent pending Floor Washer System is the Foambuster nozzle/deflector, but with the deflector rotated from below the nozzle to above the nozzle. The inverted splashplate spreads nozzle flow out across a floor in a fairly wide path to wash settled grit, sand or debris into a sump where it can be pumped out by a dewatering chopper pump. The Floor Washer System is particularly useful for attacking deposition problems in Combined Sewer Overflow (CSO) tanks, storm collection tanks, equalization tanks, lift stations, and influent channels.

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WASTEWATER DISINFECTION PODCASTS

Making Aftermarket Service And Support Work For Water And Wastewater Treatment Plants Making Aftermarket Service And Support Work For Water And Wastewater Treatment Plants

As municipalities look to make their water and wastewater treatment equipment run longer with fewer operational staff on payroll to maintain the equipment, having a reliable aftermarket parts and service provider becomes essential.

UVT-LED Sheds Light On UV Disinfection UVT-LED Sheds Light On UV Disinfection

Learn why measuring UV transmittance is so important to efficient disinfection, and how LED helps get you there.

An Alternative To Chlorine Disinfection An Alternative To Chlorine Disinfection

Chlorine has been used to disinfect water and wastewater for more than a hundred years, and while chorine has been critical to ensure public safety, it does have some drawbacks. There is a risk of highly toxic emissions, and it also reacts with organic matter in water and wastewater and forms harmful disinfection byproducts.

The Importance of Drought: Good for Business? The Importance of Drought: Good for Business?

Normally, when people hear the word ‘drought’ it’s thought of with a negative connotation. In the water business, however, that’s not always the case.

Bio-Augmentation: Adding Bacteria To Wastewater Treatment Plants Bio-Augmentation: Adding Bacteria To Wastewater Treatment Plants

Novozymes is the world’s largest industrial biotech company. The largest segment of the company deals with enzyme products, and they innovate products and develop applications in a variety of industries including first and second generation biofuels, bio-agriculture, detergents, and wastewater applications.

Ozone: An Emerging Star For Disinfection Ozone: An Emerging Star For Disinfection

There are many places around the country where water shortage is a big issue. Water is the most precious resource we have, and in light of the shortage, people have started trying to investigate creative ways of ‘what’s my next water resource,’ Chris Milligan, vice president, director of engineering with BlueInGreen, told Water Online Radio in an interview.

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WASTEWATER DISINFECTION VIDEOS

SEPAREL® PF Series SEPAREL® PF Series

The SEPAREL PF series removes dissolved gases in water through a tube-shaped gas permeable membrane composed of polytetrafluoroethylene (PTFE). Gasses dissolved in water flow through the tube and are removed due to the pressure difference of the gases inside and outside of the tube, thus creating a vacuum outside of the tube. This video explains how the PF series works.

ClorTec On-Site Sodium Hypochlorite Generators ClorTec On-Site Sodium Hypochlorite Generators

On-site sodium hypochlorite generation is a proven, cost-effective, reliable and safe alternative disinfection treatment method. On-site generated sodium hypochlorite is stable and easy to feed, and less chlorine is lost to the atmosphere because of better mixing and retention in the treated water.

Ozone Simplified: Make Your Next Disinfection Project As Simple As 1-2-O<sub>3</sub> Ozone Simplified: Make Your Next Disinfection Project As Simple As 1-2-O3

Pinnacle Ozone Solutions was founded with the goal of simplifying the ozone process.  Our products and systems specifically designed to be modular, reliable, and both energy and cost efficient.  Our truly unique approach allows each system to be precisely matched to your individual needs using truly independent QuadBlock™ ozone generator cells. This approach also allows for easy expansion, reduces the need for costly redundant or standby equipment, and can be fully upgraded at any time. Watch this informative video about how Pinnacle’s radically simple approach to ozone projects. 

De Nora Brings New Focus To Water Treatment De Nora Brings New Focus To Water Treatment

Following the acquisition of Severn Trent Services’ Water Purification Group, Water Online caught up with John Dyson, Commercialization Manager for the newly-branded De Nora Water Technologies, to understand what the change means for the water and wastewater industry. Dyson discusses how the new organization is enhancing the company’s product lines including the newly redesigned ClorTec on-site sodium hypochlorite generation system.

UV Treatment Gains Traction In Reuse Applications (Video) UV Treatment Gains Traction In Reuse Applications (Video)

Fresh off TrojanUV being named manufacturer of the year by the WateReuse Association, Water Online caught up with Jennifer Muller, Vice President of Global Municipal Sales for TrojanUV at this year’s WEFTEC, to understand how ultra violet systems are being applied in the growing movement towards direct and indirect potable water reuse.

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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.