WASTEWATER DISINFECTION RESOURCES

  • Read about a utility that sought alternate disinfection process options to replace equipment that had reached the end of life. 

  • Domestic cooking has taken a back seat across several developed economies, given the steady rise in the female workforce and subsequent lack of time. This, along with significant improvement in disposable incomes, has been playing a critical role in accelerating the shift toward processed food and beverages. 

  • Water is an essential resource crucial to supporting the foundation of all lives on earth. However, the availability of fresh water in relatively small amounts has posed numerous challenges as it is critical to fulfil basic individual, agricultural, and environmental requirements.

  • A steady rise in the volumes of wastewater globally and growing environmental concerns have prompted countries to increase their water treatment capabilities, thus augmenting sodium hypochlorite sales.

  • In this case study, discover how a WWTP used a Mazzei aeration system to continue meeting its permit requirements without adding to the daily responsibilities of plant personnel. 

  • Learn how wastewater treatment plants using UV technology can capitalize on retrofit options and what they can expect from them. 

  • The City of Belleville, Ontario, planned on re-developing downtown waterfront property into a public space, but there was one problem: the history of the site had led to groundwater contamination.  

  • The Tri-Lakes Wastewater Treatment Facility located in Monument, CO, receives flow from the Woodmoor, Palmer Lake, and Monument Sanitation Districts. The plant discharges treated effluent to Monument Creek, which is within the Fountain Creek Water Shed. Originally, the Tri-Lakes facility consisted of a three-cell lagoon. This was replaced by a two-basin Biolac Wave-Ox system, which was installed in 1990 and later upgraded in 1998 to a three-basin system with a capacity of 4.2 MGD.

  • Every stage in a wastewater treatment process is important to achieve the desired treatment results. However, primary treatment and tertiary are critical to the overall process. In the primary treatment process solids are reduced to a large extent. Without this step, subesequent treatment would be less effective. In tertiary treatment, harmful microbiological matter is rendered killed or inactive so that it will not cause sickness to those organism that encounter it.

  • In many water and wastewater treatment applications, there are a number of pollutants that are difficult to reduce by physical, chemical, or biological means alone. In more recent years, there has been a growing concern regarding pharmaceutical drugs in drinking water and aquatic environments. Pesticides get caught in runoff from farms into freshwater supplies. Personal care products are typically washed down the drain into whatever system they are linked to. Landfill leachate is a toxic cocktail of compounds that can leak into groundwater sources. Such contaminants fall into the category of micropollutants, because they are so small. Their size alone is part of the reason, they are so difficult to remove from water and wastewater by certain means. More efficient removal requires a more powerful oxidation process, this process is called an advanced oxidation process (AOP).

WASTEWATER DISINFECTION SOLUTIONS

  • TrojanUV3000PTP — Wastewater Disinfection System

    The TrojanUV3000®PTP (Packaged Treatment Plant) is ideally suited to treat flows up to 3 MGD (473 m3/hr). It is pre-engineered for quick, economical installation and is designed with proven components to provide a dependable UV solution for small wastewater treatment applications.

  • Ozone Disinfection: 499AOZ Dissolved Ozone Sensor

    The 499AOZ sensor is intended for the continuous determination of dissolved ozone. The primary application is ozonation basins in municipal water filter plants. Ozone is also used as a disinfectant in bottling and food processing plants.

  • Model 4180 All Vacuum Chemical Feeder

    The JCS Industries Model 4180 All Vacuum Chemical Feeder is for operations that require high efficiency, accuracy, control and safety. The Model 4180 will feed chlorine dioxide solution used in municipal and industrial water treatment systems.

  • Pipeline Flash Reactors for Mixing & Contacting

    Pipeline Flash Reactors (PFRs or spool pieces) utilize high velocity mixing to transfer ozone or oxygen-enriched sidestreams into bulk water flow, all within a compact footprint. With a PFR, ozone or oxygen mass transfer occurs in the pipeline within seconds, eliminating the need for additional tanks or basins.

  • Wallace & TiernanĀ® 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.

WASTEWATER DISINFECTION VIDEOS

Discover the superior ozone system solution that impressed the Superior Fresh farm. 

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.