aeration system engineering Articles
-
Exploring the potential of dynamic air supply models to evaluate control strategies: the experience at the Girona WRRF. Proceedings ICA2017
Abstract: A model-based treatment performance and energy audit of the Girona WRRF in Spain was conducted using advanced and fully dynamic air supply models. The focus of the study was on the aeration system, which represents 63% of the plant’s energy consumption. A dynamic model consisting of a process, a realistic controller, and a very detailed air supply model, was developed and ...
-
Development of a model for activated sludge aeration systems: Linking air supply, distribution, and demand. Proceedings WWTmod2016
Abstract: During the design of a wastewater treatment plant (WWTP), it is becoming industry practice for engineers to use simulation software to assist with process design. Aeration is one of the key components of the activated sludge process, and is one of the most important aspects of modelling wastewater treatment systems. A comprehensive dynamic aeration system model has been developed that ...
-
A Comprehensive Aeration System Model for WRRF Design and Control. Proceedings WEFTEC.15
Abstract: During the design of a water resource recovery facility (WRRF), it is becoming industry practice for process engineers to use simulation software to assist with the design of the plant and its aeration system. The aeration process is one of the key components of the activated sludge process, and as such, is one of the most important aspects of modeling wastewater treatment systems. A ...
-
Development of a model for activated sludge aeration systems: linking air supply, distribution, and demand
During the design of a water resource recovery facility, it is becoming industry practice to use simulation software to assist with process design. Aeration is one of the key components of the activated sludge process, and is one of the most important aspects of modelling wastewater treatment systems. However, aeration systems are typically not modelled in detail in most wastewater treatment ...
-
Development of a model for activated sludge aeration systems: Linking air supply, distribution, and demand. Water Science & Technology
Abstract: During the design of a water resource recovery facility, it is becoming industry practice to use simulation software to assist with process design. Aeration is one of the key components of the activated sludge process, and is one of the most important aspects of modelling wastewater treatment systems. However, aeration systems are typically not modelled in detail in most wastewater ...
-
High Efficiency Diffusers vs. Surface Aerators
Technical Bulletin 162: High Efficiency Diffusers versus Surface Aerators EDI has engineered systems that are well suited for almost any aeration mixing application. With multiple diffuser platforms available, it gives design engineers or users choices for coarse bubble, fine bubble of different types, and several different configurations for the diffuser systems. With this flexibility and ...
-
Application of Activated Sludge Model No. 1 to biological treatment of pure winery effluents: case studies
ABSTRACTThe practical applicability of computer simulation of aerobic biological treatment systems for winery effluents was investigated to enhance traditional on-site evaluation of new processes. As there is no existing modelling tool for pure winery effluent, a model widely used for municipal activated sludge (ASM1) was used. The calibration and validation steps were performed on extended ...
-
Elverom R.A. - Municipal RBC Retrofit
Elverom R.A. - a Municipal RBC Retrofit The Challenge: Nordre Land Kommune - Elverom is a municipality located in Norway approsimately 14 miles North of Oslo. Elverom had two Rotating Biological Contactors (RBC's) which did not work properly, were noisy and had odor issues. The required maintenance for the RBC's had become overwhelming. Elverom wanted to change over to a biofilm technology ...
-
Municipal Elverom, Norway case study
Project Name: Elverom RA Location: Nordre Land Kommune, Norway Type of Plant: Municipality - RBC Retrofit Technology Used: Biowater CMFF Biofilm system Biomedia Used: Biowater BWT-X Operational Since: July 2011 The Challenge Nordre Land Kommune, Elverom, is a small municipality located in Norway approximately H miles North of Oslo, Elverom had two Rotating Biological Contactors (RBC'sl which did ...
-
PEWE Royal Caribbean Case Study
Case Study The Royal Caribbean Cruise Line Rhapsody of the Sea services the Australian market departing from the Port of Sydney. The ship alternated with the Port of Seattle in the USA during the summer Alaska in-side passage season. She is in the Vision class of cruise ship and carries 2435 passengers and 765 crew. As with any small city, RCCL strives to reduce effluent discharge. It was found ...
-
Fixed vs. Moving Bed Systems: Aeration and Mixing Efficiency
The aeration design for a biofilm system, such as moving bed or AccuFAS fixed-film systems, is more complex than a standard activated sludge system. In a biofilm system, the aeration design must satisfy the oxygen demand for required treatment, provide mixing, and control biofilm thickness. In an AccuFAS system, diffusers are installed beneath each media tower, forming an airlift pumping ...
-
Case study - In-line aeration system provides required level of dissolved oxygen in pressurized effluent line. Hancock County, MS
The Problem: The treated effluent from all wastewater treatment plants across the country must meet local dissolved oxygen (DO) limits before discharging into receiving waters. A new municipal WWTP in southern Mississippi, designed by Carollo Engineers, has a pressurized effluent line to discharge into a local river. Since the line is pressurized, the standard method for increasing DO, a cascade ...
-
Case study - Mazzei airjection aeration system installed in Alabama Field Erected WWTP
Activated Sludge Treatment in a Municipal Sewage Treatment Plant. Huntsville, AL The Problem: A design/build contractor needed a quiet, efficient aeration system for a 250,000 GPD field erected WWTP. This plant was to be located adjacent to a school. A restriction on ambient noise at the location of the proposed WWTP required a quiet aeration process. The Solution: The project engineer selected ...
-
Performance of a dual-power, multicellular, aerated lagoon system in Corcoran, California
A dual-power, multicellular, aerated (DPMC) lagoon system was designed and constructed for the city of Corcoran, California. The new process brought the plant into a full compliance with California Regional Water Quality Control Board (CRWQCB) effluent limits while saving approximately $110,000 per year in energy costs. The project was a modification of an existing aerated/ facultative (A/F) ...
-
Case study - Mazzei implements a reliable and efficient back-up effluent oxygenation system for The Butler County Ohio LeSourdsville WWTP
Post-treatment Aeration Maintains Dissolved Oxygen in Effluent High-Solids Wastewater Prior to River Discharge. Butler County, OH The Problem: The LeSourdsville WWTP in Butler County, Ohio, was required to meet their NPDES permit requirement of 6 mg/l dissolved oxygen at the plants Miami River outfall. During normal operation the dissolved oxygen increase is accomplished in a cascade basin. ...
-
Kfar Ruppin, Israel A Case Study
Case Study: Fish FarmClient: Kibbutz Kfar RuppinStart Up: 2004Capacity: 120 m3/h circulation Overview Kfar Ruppin is one of the leading fish farming coops in Israel. Recent restrictions on water consumption and discharge have led the coop to consider semi intensive closed loop fish ponds. The main objectives in closed loop fish farming applications are prevention of Ammonia and Nitrite ...
-
Packaged Wastewater Treatment for Uneven Terrain - Case Study
PROJECT DETAILS LOCATION Virginia City, Nevada CUSTOMER Storey County SOLUTION Packaged Wastewater Treatment TECHNOLOGIES Extended Aeration Modular design allows for an efficient wastewater treatment solution for two Nevada towns Background Storey County, Nevada, just southeast of Reno, needed to replace an outdated wastewater treatment plant that serves the historic communities of ...
-
Oxygen, the fix for pond problems
Aeration of a water feature should have three main considerations. These include preventing thermal stratification, balancing the dissolved oxygen levels throughout the water column from the sludge or benthic layer to the surface and balancing temperature levels throughout the water column. Although oxygen transfer from certain methods may be significant, the greatest amount of oxygenation takes ...
By EP Aeration
-
Sustainability In Sonoma - Case study
SYNOPSIS A well-known winery in California does not take water for granted. The winery set out to use leading water conservation practices in their wine cellars and in the vineyard. However, efficiently treating the wastewater in high-demand periods became a bigger challenge in their outlook towards sustainable and responsible use of water. Environmental Dynamics International (EDI) helped this ...
-
10 Questions (And Answers) That May Change the Way You Aerate
Slot Injector: How does the slot-shaped nozzle of the Slot Injector™ aeration system improve performance? The slot shaped nozzle and mixing chamber provide a larger shear surface for mass transfer than a circular jet of identical area. This unique shape results in a high percentage of gas dissolution and superior oxygen transfer rates with a 10-20% reduction in energy usage compared to ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you