Self-Sufficient WRRF Completes In-House Grit Removal Upgrade

Aging, inefficient aerated grit facilities at North Davis Sewer District’s (NDSD) treatment plant headworks not surprisingly caused the typical headaches of poorly performing headworks:  downstream process tanks filled with grit and process equipment wore much faster than it should. And not surprisingly, it became a costly hassle for plant staff with annual basin cleanouts.

AltaPac™ AP-II Ultrafiltration Membrane Case Study

Cibola is a small community located in Southern Arizona along the Colorado River. With a growing population, the community decided to install a centralized water system to replace individual wells.

To the Rescue: The DIMMINUTOR® Makes A Difference At Ross Valley Sanitary District

Ross Valley Sanitary District in San Rafael, California services approximately 47,000 mostly residential customers over a 27 square mile service area. They have 5 major pump stations, which is where Ross Valley found themselves having the most trouble. The existing channel grinders were simply not reliable. “It was a constant headache,” said Philip Marcantonio, Senior Collection System Worker. “The pumps were ragging up sometimes twice a week and sometimes twice a day.” The plant reported that the machines were not efficient at all. “It was a lot of extra work on us to keep the stations going,” Marcantonio said. On top of that, the constant downtime was causing even more than extra work; it was costing the district a lot of money. They knew this was not a sustainable system to keep their plant and stations running.

Peaking Factors And Hydraulics In Wastewater Screen Sizing

Dealing with fine particulate matter, nutrients, and pathogens is essential for wastewater treatment plants (WWTPs) striving to meet Clean Water Act (CWA) effluent standards. Before that stage, however, come important considerations about removing larger debris that can clog pumps, overload clarifiers, or disrupt other downstream processes.

Understanding ISE Measurements In Wastewater Process Monitoring

Analytic measuring technique provides a huge number of procedures to determine the concentrations of substances in an unknown sample, e.g. photometry, titration or mass spectrometry.

Turning Water Utility Data Into Action: The Power Of Modern Meter Data Management

Smart meters, sensors, and operational systems generate a constant stream of information about water flow, pressure, consumption, and system performance. But data alone doesn't solve problems—it's the ability to understand and act on this information that drives real operational improvements.

99-Percent-Efficient Plant Shows Food, Beverage, And Agribusiness How To Recycle Wastewater And Profit From Green Energy

An outstandingly efficient industrial wastewater treatment plant using technology being introduced to Australasia is demonstrating to the food, beverage, and agribusiness processing industries how to turn waste into profit.

Step Screen Replaced By Headworks

In May 2008, Portland Water District installed 3 step screens in each of their 3 channels and in only 7 years of use, were facing maintenance & performance issues with the step screens. These screens were also affecting downstream processes.

10K Muffin Monster Takes Over When Macerators Can't Cut It

The Cibolo Creek Municipal Authority (CCMA) provides regional wastewater services for the area northeast of San Antonio, Texas and serves the surrounding communities. After years of frustration in dealing with severe problems with plugging of the pump suction lines that led to frequent pump rebuilds, they turned to the 10K Muffin Monster. The 10K Muffin Monster now plays an integral role in this water reclamation plant’s system by grinding the primary sludge and debris that is pumped to the digesters.

The Importance Of Grinder Design In Pump Protection

By breaking down solids into a manageable size, grinders allow pumps to work efficiently while avoiding downtime for cleaning and repair. However, not all grinders are the same. Here is a list of design features that are important to consider when making a grinder investment.

Application Bulletin: Reverse Osmosis

Osmosis is the phenomenon of lower dissolved solids in water passing through a semi-permeable membrane into higher dissolved solids water until a near equilibrium is reached

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

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.

Sewage Pump Station Level Application

The most common level application in the water and waste water industry is the infamous wet well. With its line-of-sight measurement technology, rugged sensor, narrow laser beam and virtually nonexistent maintenance requirements or on-site calibration, ABB’s LLT100 laser level transmitter answers most concerns related to wet well level measurements and makes it easy to calculate what could amount to a substantial return on investment.

Lab Gas Sub-Metering Accuracy Improves With Thermal Flow Meters To Save Money

Facility administrators will find the advanced ST100 Series Thermal Mass Air/Gas Flow Meter from Fluid Components International (FCI) helps them improve the accuracy of specialty gas point of use and sub-metering operations to achieve accurate billing in their labs for better cost tracking and control.

Ultrasonic Flow Meters Improve Biogas Measurements

As interest in biogas grows, more attention is being paid to measuring biogas flow, which has long been a problem area in process measuring technology.

Degradation Of Pharmaceuticals By Advanced Oxidation Process (AOP) In Low Quality Wastewater

LLT100 Laser Level Measurement In Water And Wastewater

In the water and wastewater market segment, the LLT100 laser level transmitter provides an efficient way to measure levels of liquids.

Panametrics Achieves Challenging Wastewater Flow Measurement On A Lined Ductile Iron Pipe

A municipal wastewater plant in North America sought a reliable flow measurement for one of their key wastewater lines. The existing dual-channel ultrasonic flowmeter from a competitor had consistently failed to provide accurate readings.

Recording & Control: Online Data Recording And Control In Anaerobic Digestion Processes

Solids present in wastewater need to be safely and comprehensively treated and removed. This means not only removing toxic compounds, including both organic and inorganic materials such as heavy metals, but also eliminating any harmful bacteria present in the solids.