aeration basin Articles
-
Coldwater, Michigan - AccuFAS - Biological Treatment installations applications - Case Study
Application The wastewater treatment facility in Coldwater received tighter seasonal ammonia limits of 2 mg/L from May to November. Compounding this challenge, groundwater levels around the plant limited facility expansion and upstream industries caused organic shock. AccuFAS was selected as a retrofit solution for the existing solids contact aeration basins. The plant continues to consistently ...
-
Fixed vs. Moving Bed Systems: Media Retention and Headloss
Submerged fixed-film media is utilized within aeration basins to optimize biological treatment and increase capacity. Therefore, proper design and installation of the equipment used to keep the media in the aeration basin and prevent it from passing downstream is critical to system function. Physical Restraint of Submerged Media Moving bed systems typically use submerged stainless steel ...
-
A pilot study on suspended activated sludge process augmented with immobilized biomass for simultaneous nitrification and denitrification
Concurrent nitrification and denitrification (CND) are natural phenomena in the soil environment that can be applied in wastewater treatment for enhanced total nitrogen removal. However, significant renovation is necessary for existing plants to equip them for nutrient removal. At a domestic wastewater treatment plant, we performed a pilot test by installing bioplates with entrapped biomass in ...
-
Activated sludge wastewater treatment plants optimisation to face pollution overloads during grape harvest periods
ABSTRACTThe principal objective of our study was to optimise a municipal activated sludge wastewater treatment plant (WWTP) to face high organic flows due to viticulture effluents inputs. Treatment file optimization consisted in testing different treatment lines, changing the number and volume of biological basins and clarifiers, with or without a buffer basin upstream, with a view to achieving a ...
-
COVID19 Surge of Wipes at WWTP`s - OR-TEC has the Solution
Wastewater Treatment Plants have been struggling with wipes for a few years now but, facilities are seeing an increased number of disinfectant wipes, latex gloves and face masks being flushed down toilets, creating clogs, blockages, and other damage to critical infrastructure. These wipes do not disintegrate. De-ragging pumps, aerators, aeration basins and unclogging pipes is labor intensive and ...
-
Understanding F:M Ratio
F:M ratio as a theory is one of the most important aspects in wastewater treatment but also one of the most poorly understood concepts. Occasionally textbook numbers are good guides, however there are many instances in which understanding the complexity of F:M ratio may help to provide further insight. As a consultant it is very common to see strong emphasis on calculations such as F:M ratio. ...
-
Energy saving on wastewater treatment plants through improved online control: case study wastewater treatment plant Antwerp-South
This work provides a case study on how activated sludge modelling and computational fluid dynamics (CFD) can help to optimize the energy consumption of a treatment plant that is already equipped with an advanced control based on online nutrient measurements. Currently, aeration basins on wastewater treatment plant Antwerp-South are operated sequentially while flow direction and point of inflow ...
-
Thermal Mass Flow Meters Improve Efficiency in Wastewater Treatment Plants
Every municipality throughout the country has a wastewater treatment plant to safely treat water that enters back into our environment. This doesn’t mean they are immune to problems. One of the biggest problems for US wastewater treatment plants is the aging infrastructure with an estimated 180 billion dollars needed to repair many wastewater plants. A close second is the energy needed to ...
-
Maximum Air Pressure for Diffusers
In the water and wastewater treatment field there are many needs and/or opportunities to upgrade existing facilities or to construct new facilities where space is limited. The available space can severely constrict the capacity of treatment facilities, or reduce the options available for design and implementation of the treatment process. Some of the needs facing many potential facilities is the ...
-
Optimizing air flows to aeration basins – Case Study
As a result of clean energy mandates and the rising cost of energy, wastewater treatment facilities around the country are retrofitting their instrumentation to run highly efficient, cost-effective, clean facilities. To reduce emissions and produce clean energy, solid wastes are often digested in large digester tanks to reduce the volume of waste (sludge) and produce more biogas, which is then ...
-
Nishad Mills Limited – Case Study
Project Name Nishad Mills Ltd. Employer Nishad Mills Ltd. Contractor Enta Miihendislik Antma Taah. San. Ve Tic. Ltd. Sti. Location of the plant Karachi/ PAKISTAN Scope of work Industrial Wastewater Treatment Plant Contract Date 2012 Completion Date 2013 Flowrate of the plant: 1.500 m3/day Inlet PollutionParameters: COD: 1100 mg/L SS: 85-135 mg/ L PH: 6-10 Units of the Plant: Physical ...
-
Nitrification of municipal effluents in fluidised bed reactors using immobilised microorganisms
1. The problem Existing municipal effluent treatment plants designed earlier for the BOD removal are usually not suitable for nitrification at low temperatures, because of : Small plant dimensions and low sludge age, respectively Biokinetical reasons. Consequences are that in the cases of nitrification expensive plant extensions are required. 2. Our problem solution results in Plants ...
-
Case study - Supplemental aeration system reduces high BOD levels and solves odor issues - Sparta, MI
The Problem: A leading fruit juice company had expanded over the past ten years and increased wastewater flow from 7,000 to 11,000 gallons per day (gpd), without upgrading its wastewater treatment plant. The existing system consisted of an equalization tank, three conventional aeration tanks in series, and four rotating biological contactors (RBC) in parallel. The plant was able to reduce the ...
-
Airlift bioreactors: Application to wastewater treatment
After an introductory review, this paper presents a three-phase reactor fluid dynamic model that is used in the development of a generic process for upgrading existing wastewater treatment plants (WWT). The aim is to incorporate nitrification and de-nitrification without additional reactor volume. The core of the process consists of an attached growth airlift reactor (AGAR) in which a biomass ...
-
Floating Horizontal Aerators Enhance Eufaula, Alabama Activated Sludge Plant
The Eufaula, Alabama, wastewater treatment plant (WWTP) is an extended aeration activated sludge facility designed for an average daily flow rate of 2.7 million gallons per day (mgd). Prior to February, 2005 this WWTP used vertical aerators to provide oxygen and mixing in its aerator basins. The plant has two aeration basins, each 1.87 million gallons in volume, which had 160 horsepower (hp) of ...
-
Success of Onlin Leads to Closing for Wastewater 2 Process Control of Consent Order Treatment Plant
In 2003, Plant City, a small Florida city of 30,000 residents, faced a very big problem. The Florida Department of Environmental Protection (FDF.P) determined that the city's wastewater treatment plant was not consistently operating within its permit limits, and placed it under a consent order. Plant City is a highly industrialized area. "Our industrial loading is very diverse and includes metal ...
-
Semicentralized greywater and blackwater treatment for fast growing cities: how uncertain influent characteristics might affect the treatment processes
The SEMIZENTRAL infrastructure approach has been developed for fast growing cities, to meet their challenges regarding water supply as well as biowaste and wastewater (WW) treatment. The world's first full-scale SEMIZENTRAL Resource Recovery reference plant has been implemented in Qingdao (PR China). Greywater (GW) and blackwater (BW) are collected and treated separately. Measurement of ...
-
Performance of mechanical aerator in wastewater treatment with special reference to oxidation ditch: a critical review
Mechanical aerators used in wastewater treatment are the largest energy consumers in biological reactors. Well-known researchers have been working on the oxygen transfer by mechanical aerators in oxidation ditch process and they have successfully enhanced the efficiency of aeration system with considering the factors affecting oxygen transfer such as speed of rotors and geometry of aeration ...
-
Real-time control optimizes extended aeration processes - Case Study
The population of Hillsborough County, Florida has doubled since the Valrico advanced wastewater treatment plant (AWTP) was built in 1990 to treat the sewage of several small communities west of the City of Tampa. When it began operation, the Valrico AWTP capacity was only 4 MGD; small when compared to Tampa’s 96 MGD Howard F. Curren AWTP located not far to the east. But Valrico serves as a ...
-
Ulker-Ak Food Aydin Factory – Case Study
Project Name Ulker- Ak Gida Aydin Wastewater Treatment Plant Employer Ulker-AkGida Contractor Enta Miihendislik Aritma Taah. San. Ve Tic. Ltd. Sti. Location of the plant Aydin/TURKEY Scope of work Industrial Wastewater Treatment Plant Contract Date 2012 Completion Date 2013 Flowrate of the plant: 1.500 m3/day Inlet Pollution Parameters: COD: 2000-2500 mg/L SS: 800-900 mg/L PH: 9-ll Oil ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you