Nutrient Removal Resources

51. Aerobic Treatment Of Wastewater For Fish Flour And Fish Oil Company Reuse 6/29/2018

    A fish flour and fish oil processing company produces 100 tons of flour a day from fish waste resulting from the broth concentration plant and from drying of flour, washing water, boiler blowdown and cooling towers. The company needed to treat its wastewater and to reduce its water supply costs.

52. Is There A Cure For Wastewater's Summertime Blues? 6/25/2018

    As we approach the hottest months of the year, wastewater treatment plant (WWTP) operators face a range of challenges arising from elevated summer temperatures. With all due respect to Eddie Cochran, this article outlines some of the cures — or at least preventive steps and countermeasures — for wastewater treatment’s “summertime blues.”

53. Savings Helps MABRs Gain Traction In Municipalities 5/9/2018

    An MABR is essentially a biological wastewater treatment process that utilizes seemingly passive aeration through oxygen-permeable membranes. Oxygen transfer through the MABR membranes is diffusion based: driven by concentration differences such that oxygen passes from air at atmospheric pressure into water at a higher hydrostatic pressure. This oxygen transfer mechanism, wherein air is supplied to the process at very low pressure, is the reason MABRs have significantly lower energy consumption compared to other wastewater treatment processes, such as conventional activated sludge (CAS), that utilize diffusers. This energy savings is one of the key reasons MABRs are gaining traction in the municipal wastewater industry.

54. Farm Community Effort Leads To Improved Drinking Water For Thousands 3/28/2018

    All communities depend on clean water and that supply of clean water depends on the actions of members in the community and outside of it. The small city of Kutztown lies within the Saucony Creek watershed in Berks County, Pennsylvania. The watershed is mostly agricultural, dotted with small family crop and livestock farms, and the activities on these farms affect water supplies near and far.

55. Tackling Modern Wastewater Treatment Challenges And Unlocking Efficiencies With Advanced Water Technologies 1/24/2018

    Research studies, empirical evidence, and the march of time all suggest that the implementation of next-generation technologies at wastewater utilities is profoundly important, if not imperative, for efficient operations.

56. Creating A Universal Solution For Nutrient Pollution 11/30/2017

    As excess nutrients continue to pollute source water, bringing dead zones and toxic chemicals, it’s time for the disparate agencies that can make a difference to band together.

57. Optimizing Chemical Dosing Reduces Chemical Use While Meeting Effluent TP Limits 11/9/2017

    The city of Black River Falls in Wisconsin used chemical treatment with ferric chloride (FeCl3) to achieve their effluent total phosphorus (TP) permit of 1.0 mg/l. Historically, the chemical dosing rate was manually adjusted on a daily basis based on the measured effluent TP concentration. The plant was upgraded with an OSCAR process performance optimizer control system with phosphorus controller, which uses continuous measurement of orthophosphate. Read the full case study to learn more.

58. Do More With Less: Integrating Nutrient Removal Control Improves Treatment Capacity And Efficiency 11/9/2017

    Wastewater treatment plants (WWTP) are facing many challenges. Permits on nitrogen and phosphorus in the effluent water are progressively becoming stricter in order to protect surface waters from eutrophication. At the same time, plants are required to reduce both energy and chemical consumption and are often challenged with limited time and staff. In total, they are required to do more with less. In order to meet these challenges, a plant with a Sequencing Batch Reactor (SBR) in Green Lake, Wisconsin was upgraded with an advanced process control system – the OSCAR process performance optimizer with NURO controller.

59. What The MWRD Has Learned About Wastewater Treatment 10/26/2017

    Chicago’s Stickney Water Reclamation Plant is among the world’s elite for its size, capacity, and effective nutrient removal. But where do the utility’s ambitions still lie and what can it teach the rest of the country’s operations?

60. 10 Water-Tech Winners From WEFTEC 2017 10/25/2017

    For the second straight year, the Water Environment Federation Exhibition and Conference (WEFTEC) came to McCormick Place in Chicago, returning also to the city which launched WEFTEC 90 years ago. As always, it was a showcase of the latest technologies and ideas available in the water/wastewater industry, but each show also has its own "feel" that reflects the times.