WASTEWATER

GettyImages-157593000_450_300 How To Choose Among Wastewater Screen Options

Wastewater screening isn’t one-size-fits-all. The right choice depends on flow, debris, and efficiency needs, with long-term performance and maintenance costs shaping the best solution.

WASTEWATER CASE STUDIES AND WHITEPAPERS

WASTEWATER APPLICATION NOTES

  • How To Optimize Your DAF System With Air Dissolving Pumps

    Despite their importance in modern wastewater applications, not all DAFs are created equal. Factors, such as the components that make up these systems, will influence how well they work and how long they last.

  • Repair Or Rethink

    The Moundsville Wastewater Treatment Plant in West Virginia chooses not to fix a broken blower unit, but rather to correct an outdated approach. The result is a savings of $50-60K a year in energy costs.

  • Primary Wastewater Treatment: Influent Monitoring

    The raw sewage entering a wastewater treatment plant comes from a variety of sources. In addition to effluent from domestic users, effluent from industrial users and storm water run off can be present.

  • Determining Biochemical Oxygen Demand (BOD) With Lovibond® OxiDirect

    The Biochemical Oxygen Demand over a testing period of n days (BODn) is precisely defined and associated with experimental standards. It represents the quantity of oxygen aspirated in the course of aerobic breakdown of organic substances by microorganisms.

  • Why Measuring Hydrogen Sulfide In Wastewater Matters

    Hydrogen sulfide (H2S) gas in wastewater environments is a familiar concern. But waiting until its odor is detected can be too late to exert as much control over it as desired. Fortunately, a new ability to monitor H2S concentrations — in the liquid wastewater stream, in real time — is advantageous for wastewater professionals in terms of safety, cost, and consumer complaints. Here are four ways to capitalize on that capability.

  • Comparison Of Ultra Low Range Total Chlorine Residual Limits Of Detection And Quantitation Across The Water Industry

    Limits of Detection and Quantitation are key to understanding analytical instrumentation capabilities, especially when non-optimal process control can lead to damage of sensitive equipment due to insufficiently accurate readings.

  • Protecting Pumps From Dead Head Conditions

    The C445 motor management relay offers the most configurable protection options in the industry, with features specifically designed to protect critical pumps from costly damages due to dead-head and other underloaded or starved pump conditions.

  • Harmonics Reduction Methods

    There are several basic methods for reducing harmonic voltage and current distortion from nonlinear distribution loads such as adjustable frequency drives (AFDs). Following is a description of each method, along with each method’s advantages and disadvantages.

  • Achieving A Delicate Balance To Maintain RO Membranes

    This application note explores the importance of maintaining a delicate balance in reverse osmosis systems to protect RO membranes.

  • Improved Efficiencies In TOC Wastewater Analysis For Standard Method 5310B And EPA Method 415 Total organic carbon (TOC) measurement is of vital importance to the operation of water treatment due to organic compounds comprising a large group of water pollutants. TOC has been around for many years, and although it is a relatively simple analysis in theory, operational efficiency is paramount.

WASTEWATER PRODUCTS

The Aqua TruDense system is a densified sludge treatment technology that combines all of the features and benefits of a true-batch SBR system, with the intensification of densified sludge. The enhanced treatment characteristics of the densified sludge allows for faster settling with increased MLSS concentrations. The system provides a much smaller footprint when compared to conventional activated sludge (50-60% less) and batch activated sludge systems (20-25% less). All treatment processes including selective feeding, react phases, surface wasting, settling and clarification occur in a single basin. This creates ideal controlled conditions for densification of sludge, without the need for external separation devices such as hydrocyclones or lamella clarifiers. This innovative, densified sludge treatment technology features true-batch operation and a time-based control strategy providing the ultimate in treatment flexibility.

The Davco™ product line of Evoqua located in Thomasville, GA, offers retrofit, rehab, and replacement parts and services and the installation of water and wastewater filtration, separation, clarification, aeration, biological treatment, and screw pumps. Our retrofit and rehab services save municipal and industrial water and wastewater plants time and budget in addressing worn out, over-extended-in-capacity treatment facilities that are costly to maintain.

The unique, NFPA 820-compliant ReliaSource Above-Ground Submersible Valve Package (ASVP) System can revolutionize your submersible pump applications. 

Manage and dewater sludge and slurry with this dewatering box. These vacuum-rated containers can be used to dewater solid sludges using a disposable filter cloth to enhance dewatering efficiency.

Despite their importance in modern wastewater applications, not all DAFs are created equal. Factors, such as the components that make up these systems, will influence how well they work and how long they last.

The ForeSITE™-UL (FS-UL) system is designed to enable cost-effective, easy-to-setup and reliable monitoring of water levels for a wide variety of applications and locations.

LATEST INSIGHTS ON WASTEWATER

  • Einstein once said of compound interest, "He who understands it, earns it. He who doesn't, pays it." The same logic of compounding applies to the organic sediment accumulating on the floor of your drinking water reservoir. The longer you wait to address it, the more exponentially expensive it becomes to fix.

  • Our infrastructure systems have operated in managed deterioration for decades. And not surprisingly, once they deteriorate badly enough and cross over into active failure, all cost discipline disappears.
  • Every day, food scraps disappear into trash bags, are hauled away, and forgotten. But that waste could be turned into something productive.

  • Currently, water infrastructure is outdated and fragile, prone to breakages and leaks. Reactive approaches to water infrastructure are only implemented after an incident and are more expensive than simple maintenance fixes. Geotechnical Internet of Things (IoT) devices enable water and wastewater industry professionals to identify and address issues before they escalate into catastrophic events.
  • Traditional gravity sewers rely on large-diameter mains, deep trenches, and often multiple lift stations — elements that carry significant capital and restoration costs, particularly in rural or rugged terrain. To improve cost efficiency and sustainability, many municipalities are adopting decentralized collection systems such as Septic Tank Effluent Pump (STEP) systems, Septic Tank Effluent Gravity (STEG) systems, and liquid-only sewers.
  • Aeration control strategies often remain conservative and static. Blowers operate continuously, oxygen levels are maintained near maximum, and airflow rates are rarely adjusted in response to real-time biological demand. The result is widespread over-aeration — a condition that does not improve treatment performance but significantly increases operating costs.

WASTEWATER VIDEOS

Explore ozone technology and advanced oxidation processes (AOPs), with expert insights on real-world applications, water safety, and innovations shaping municipal and industrial treatment systems.

Explore ozone system optimization with industry experts, covering performance strategies, field insights, automation, and common design pitfalls to improve efficiency, compliance, and long-term reliability in water treatment.

Go behind the scenes of ozone system service, exploring startup, maintenance, troubleshooting, and PinnacleCare™ support to ensure reliable, efficient operation of mission-critical installations.

Explore nanobubble technology’s science, benefits, and real-world applications in water treatment and agriculture, improving gas transfer, efficiency, and sustainability across a wide range of industries.

On this episode of The Water Online Show, hosts Travis Kennedy and Kevin Westerling interview Fred Gerringer, Brown and Caldwell’s Water Reuse National Practice Leader, about the creation of a first-of-its-kind State Water Reuse Regulatory Guide being developed for the WateReuse Association and its partner organizations.