WASTEWATER
What To Know Before You Invest In New Headworks Equipment
Successful headworks investments depend on understanding site needs, matching technology to application, evaluating total cost of ownership, and choosing vendors that prioritize long-term performance and reliable support.
WASTEWATER CASE STUDIES AND WHITEPAPERS
-
EPA Scientists And Partners Team Up To Tackle Cape Cod's Nutrient Pollution And Protect Water Quality
Cape Cod, Massachusetts, is known for its picturesque villages, sandy beaches, and seafood. But these iconic coastal waters, and the communities and ecosystems they support, are under an increasing threat from nutrient pollution.
-
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.
-
Recognized Results Based On Quality Assurance And Quality Control
Responsibility for analysis results lies with the users themselves or their supervisors. Both are therefore liable for any incorrect interpretations and decisions that are made as a consequence of incorrect data.
-
Aerzen Combines Blower Technology And A New Control System For Energy Saving Operation Even In Case Of Load Changes
If modernizations in wastewater treatment plants are due, as a rule the permanently reducing limit values of ammonium, nitrate and phosphate are pushing the investment decisions.
-
AMERICAN's Versatility Shines In Rocky Terrain
Murfreesboro, Tennessee, is the fastest growing city in Tennessee, and one of the fastest growing cities in the United States with its population more than doubling since 2000. To manage this growth, the city’s Water and Sewer Board recently embarked on an $8.2 million project to construct the Southwest Regional Force Main.
-
Floating Treatment Wetlands Mitigate Lake Eutrophication Simple, cost-effective water treatment strategies are transforming agricultural effluent into world-class fish habitat in an ongoing study in Montana.
-
Constructing A Winding Box Culvert Channel In A Steep, Rocky Canyon
Special precast box culverts were used for one of the most significant segments of the $25.8 million emergency water restoration project, designated by the NRCS, known as the Cache Water Restoration Project (CWRP). The CWRP project involved the reconstruction and improvement of approximately six miles of mostly open, unlined channels that make up the Logan and Northern, as well as the Hyde Park and Smithfield canals. The project incorporated new precast pipeline, box culverts, a section of pressurized pipe, metering systems, turn-outs, head gates, and improved maintenance access.
-
Which Method Is Suitable For Treatment Of Heavy Metals In Paper Mill Wastewater?
The paper and pulp industry is among the largest industrial users of water resources operating across the world. Typically, pulp and paper industry operations require on average about 54-70 m3 (18,000 gallons) of water per metric ton (2200 pounds) of processed paper goods. This water usage is staggering, and water is used in almost every single part of the pulp and paper manufacturing process. This paper mill wastewater is produced in significant quantities in addition to residual sludge waste from initial pulp digestion to pulp slurry operations and washing the paper-making machinery.
-
Polymer Activation Equipment Upgrade Yields Consistent Polymer Savings Of Over 13%
In an effort to lower operational costs and extend the life of the dewatering centrifuge, operators in Springboro, OH, began to look at the polymer activation equipment in use at the plant. The Polyblend® M-Series emulsion polymer activation systems had been in steady operation for over 10 years. The equipment still performed reliably, but operators were interested in ways to achieve greater efficiency. They were aware of the new Polyblend® Magnum mix chamber, with its enhanced two-zone mixing energy.
-
How To Avoid Byproduct Formation When Using An Ozone And Biologically Active Filtration System
This article will cover the different types of byproducts that can occur, along with specific examples, and what is needed to reduce their presence in the final effluent.
WASTEWATER APPLICATION NOTES
-
Managing Storm And Surface Water With ForeSITE UL Monitoring System
As flooding increases along coastal and river-adjacent communities, the need for low-cost, reliable monitoring and warning systems has become a critical factor for managing these issues in real time, without requiring major infrastructure overhauls.
-
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.
-
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.
-
Magnetic Flow Meters Improve Recycling Of Gas Well-Produced Water
As old gas & oil fields play out, newer methods must be used to extract resources from areas where they are locked in layers of shale. One current technique is known as “fraccing,” in which high pressure water is pumped into the well shaft to “fracture” the rock layers, allowing more natural gas to escape and be collected. However, this technique poses a number of environmental problems, including contamination of water with hydrocarbons, solid particulates, and scale producing ions — making it unsuitable for reuse.
-
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.
-
Microbial Control In Cheese Making
Microbial contamination of food and beverage products is a potentially catastrophic occurrence resulting in foodborne illness or food spoilage. The same nutritive properties that render cheese and dairy products such a valuable food also provide an ideal growth medium for microbes if contamination occurs.
-
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.
-
Dosing Of Sodium Hypochlorite Solution For Drinking Water Disinfection
A water purveyor was in urgent need of a chemically resistant flow instrumentation with a long life of service that allowed reliable and long-term stable dosing of the sodium hypochlorite solution.
-
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.
-
Bridge Crossings And The Proper Use Of EX-TEND®, FLEX-TEND®, And Force Balanced FLEX-TEND Products
Of particular interest when it comes to bridges is the locating of pressurized water lines on and under bridge structures. Pressurized pipelines can present a number of unique challenges to the design engineer and utility owner.
LATEST INSIGHTS ON WASTEWATER
-
The White House has finalized plans to roll back rules under the National Environmental Policy Act (NEPA), narrowing its focus and limiting what the current administration claims are needless delays for federal approval of water, energy, and other infrastructure plans. For water and wastewater utilities, the changes could speed up permitting for critical projects, although experts warn the tradeoffs could do more harm than good.
-
Traditional sewer systems, while effective, often require significant capital investment, invasive implementation measures, and complex maintenance. As a result, innovative decentralized wastewater solutions are necessary to address the needs of communities or commercial areas in need of wastewater service. One such solution is the liquid-only sewer (LOS) system.
-
While many scientific and technical reports show that floods are becoming larger and more common, reports underestimate how their frequency is changing. Flood sizes get the spotlight, but governments and experts need to also consider their frequency to address implications overlooked by traditional management methods.
-
In areas with storm drains, the water can quickly overwhelm the drains, causing flooding hazards. For this reason, many towns have ordinances dictating how much ground can be covered with impermeable substrates.
-
Technology like advanced process control systems can streamline operations, create opportunities to lower costs and emissions, and ensure effluent quality meets the highest standards. Research also indicates that implementing an appropriate control strategy can help reduce N2O emissions.
-
Strategic flow monitoring helps wastewater utilities curb overflows, cut costs, and safeguard public health by turning accurate data into proactive action.