WASTEWATER
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
-
Removing Iron From Groundwater
In 2008 Texas was facing an extended drought and the City of San Angelo was weighing its alternatives. The City felt the Hickory Aquifer well field was the best water option available, but this water contained significant amounts of radium and iron.
-
Accurate Measurement Of Sewage Flow Made Possible By Clamp-On Technology
Read about how Welsh Water sought innovative solutions, exploring clamp-on technology for accurate sewage flow measurement.
-
Maximum Water Reuse, Zero Liquid Discharge — A Power Plant Case Study
ELCOGAS, established in 1992 with the aim of building and operating a 335 MW Integrated Gasification Combined Cycle (IGCC) power plant as well as the commercialization of its technology.
-
Using Bubbles To Reduce Toil And Trouble
Two innovative products leverage natural fluid dynamics, biology, and aeration principles to reduce labor and energy consumption in wastewater applications — the Lagoon Master Aerator and the Wet Well Wizard.
-
Highly Reliable Yokogawa Flowmeters And Transmitters Installed In The State-Of-The-Art Water Reclamation Plant In Singapore
The Deep Tunnel Sewerage System (DTSS) is an efficient and cost-efficient solution to meet Singapore’s long-term needs for used water collection, treatment, reclamation and disposal. Conceptualised and managed by PUB, Singapore’s National Water Agency, it was conceived as a cost-effective and sustainable solution to meet Singapore’s long-term used water needs.
-
Water Quality: Why Analytical Thinking Has Never Been More Important
In an era of increased scrutiny for delivering efficient and sustainable industrial practices, the maxim “you can’t manage what you don’t measure” is well known to anyone, particularly those whose daily role revolves around monitoring and improving water quality.
-
Sewer Bypass Projects Surge As Infrastructure Ages
Temporary bypass systems allow for necessary maintenance and repair.
-
Treatment System Achieves 96.5 Percent Reduction In BOD Strength
Anderson Valley Brewing Company had acquired a several different aeration technologies in their treatment ponds over the years including surface aspirators and a diffuser system. They were interested in increasing treatment capacity so they could irrigate using reclaimed wastewater. After discovering ClearBlu and visiting an existing installation they decided to incrementally add UltraFine Bubble aerators to increase treatment.
-
How Flow Technology Can Ease The Inflow And Infiltration Headache
This article will explain why rain-dependent inflow and infiltration (RDI&I) measurement often fails and how to produce the level of data quality that can detect, understand, and manage it.
-
Efficient Blower Selection At WWTPs
In general, the term blower is a machine used for moving gas with a moderate increase of pressure, but it is easier to answer the question if we compare the fan, blower, and compressor. An air compressor has a high pressure-to-volume ratio, whereas an air blower has a low pressure-to-volume ratio.
WASTEWATER APPLICATION NOTES
-
Active Energy Control – Energy Reductions Of Up To 10% Above Standard Drives
Energy costs continue to increase. At the same time, there is increased pressure to reduce utility bills without sacrificing operations or comfort.
-
Application Note: Preliminary Performance Study On An On-Line TOC Analyzer In Pharmaceutical Applications Total Organic Carbon (TOC) analysis is an effective technique for detecting and measuring the presence of organic contaminants in waters used throughout industrial processes, municipal water uses, and for determining residual concentrations of organic material on the surfaces of equipment used in the manufacture of active pharmaceutical ingredients. By Jeffrey Lane, Steve Skalski, and Gary Engelhart, OI Analytical
-
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.
-
Orion DUAL STAR™ Quick Start Note - Nitrate In Water & Wastewater The Thermo Scientific Orion DUAL STAR meter shows the results of both input channels simultaneously.
-
UV Technology Offers Solution For Emerging Water Crisis
Many are turning to UV as an effective barrier to enable the reuse of wastewater, for indirect reuse, and aquifer recharge.
-
Pikeville, Kentucky Medical Center Leak Found Despite Ambient Noise
Leaks found in 60 psi high density PE pipe by FELL in less than three hours. Acoustic and CCTV failed to find any leaks after more than a year of investigation. Read the full case study to learn more.
-
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.
-
Chlorine Measurement In Wastewater And Regulated Discharge Requirements
Homes, industry, schools, and businesses all generate sanitary waste, or sewage. Sewage treatment is a multistage process that cleans up wastewater before discharge or reuse. In the final step of the treatment, disinfectants are added to kill disease-causing organisms. Common disinfectants are chlorine gas and sodium hypochlorite. Chlorine dosage levels are designed to leave almost no residual in the wastewater after treatment
-
Mapping And Identifying The Source Of Water Quality Issues
A Southern U.S. municipality experiencing taste and odor issues in a certain neighborhood was also having difficulty maintaining chlorine residual levels in the area. Biological growth was suspected, however, water leaving the treatment plant met and exceeded all water quality requirements. After several investigations, the source of contamination in the distribution system could still not be identified.
-
Flow And Concentration Measurement For Automated Sludge Thickening
Learn how a wastewater treatment plant in eastern Switzerland relies on the targeted use of flocculants to prevent sludge washout.
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.