wastewater minimization Articles
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Duckweed & Wastewater Ponds, Mitigation Options
Duckweed in wastewater ponds can be tough to get rid of. A pond over run by duckweed can cause a host of processing problems that many people may not realize and it is in the best interest of any wastewater system to minimize duckweed impacts. No one method is a cure all for every application. Sometimes it takes a combination of strategies to keep duckweed at bay. Mixing and circulation ...
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Pump Station in California - Case Study
Client: Glorietta Bay Pump Station in Coronado, California Facility: A Wastewater Pump Station located in a busy public park. Problem: How to eliminate wastewater odors while minimizing the visual impact. Decision: The client chose to use a BOHN BIOFITLE, in-ground biofilter with a grass cover. Outcome: The pump station has an around-the-clock odor control system that blends seamlessly into ...
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Case Study C - Glorietta Bay Pump Station in Coronado, California
Client: Glorietta Bay Pump Station in Coronado, California Facility: A Wastewater Pump Station located in a busy public park. Problem: How to eliminate wastewater odors while minimizing the visual impact. Decision: The client chose to use a BOHN BIOFITLE, in-ground biofilter with a grass cover. Outcome: The pump station has an around-the-clock odor control system that blends seamlessly into the ...
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The Use of Water Quality and Process Models for Minimizing Wastewater Utility Greenhouse Gas Footprints
The Use of Water Quality and Process Models for Minimizing Wastewater Utility Greenhouse Gas Footprints provides an understanding of the processes that are responsible for the major contributions to GHG emissions from WWTP and sewer systems (e.g. heterotrophic denitrification, autotrophic nitrification, autotrophic denitrification, methanogenesis). This knowledge is translated into mathematical ...
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Use of marine outfalls in wastewater disposal
Global experience has shown that disposing of properly treated domestic wastewater through effective ocean outfalls is an economical and reliable strategy for wastewater disposal with minimal environmental impact. Better construction techniques, such as tunnelling, coupled with improved materials mean that the technology of marine wastewater disposal has advanced rapidly in recent years. ...
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Techno-economic assessment of heavy crude oil desalting plant
Electrostatic desalting is the industrial standard method for removing salt from crude oil. In this study a techno-economic analysis of a crude oil desalting plant is presented. A complete process simulation was conducted using Aspen HYSYS in parallel with a simulation in Microsoft Excel in order to account for salt concentrations. An economic assessment of the proposed design was performed to ...
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PMMA-titania floating macrospheres for the photocatalytic remediation of agro-pharmaceutical wastewater
Antibiotics such as tetracycline are used on a large scale in agriculture, and can become concentrated in wastewater lagoons that are used in conjunction with confined animal feeding operations. Solar-illuminated titanium dioxide can be used to photocatalytically degrade aqueous tetracycline, but its application in a lagoon environment requires that the photocatalyst be supported on a ...
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Tortilla Plant
Problem: A major tortilla plant, producer of corn and flour tortillas, tortilla strips and taco shells, was having problems with high levels of contaminants in their wastewater. Their major sources of waste are from their corn cooking operation and from their principal plant clean up performed twice a week. Although minor, boiler blow down and fryer cleaning are also waste sources for this ...
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Mathematical modeling of upflow anaerobic sludge blanket (UASB) reactor treating domestic wastewater
Although the upflow anaerobic sludge blanket (UASB) reactor has been widely applied for domestic wastewater treatment in many developing countries, there is no sufficient mathematical model for proper design and operation of the reactor. An empirical model based on non-linear regression was developed to represent the physical and chemical removal of suspended solids (SS) in the reactor. ...
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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 ...
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Corrugating Facility Redesign Wastewater Optimization Case Study
Paper & Pulp Industry Case Studies Corrugating Facility Wastewater Optimization Integrated Engineers, Inc. modified a corrugating facility in Southern California that required a design build solution to improve their existing wastewater treatment process. Their previous treatment process involved using Sodium Hydroxide to raise the pH, coagulant in the form ...
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Optimum waste interception in Liquefied Natural Gas processes
This work addresses optimum waste interception and wastewater minimisation in liquefied natural gas (LNG) processes. The problem involves solvent regeneration and purification using distillation. The scope of this paper focuses on determining optimum impurities (waste) composition (accumulation) in the solvent loop while considering energy integration scenarios including pressure of the ...
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Soil aquifer treatment using advanced primary effluent
Soil aquifer treatment (SAT) using primary effluent (PE) is an attractive option for wastewater treatment and reuse in many developing countries with no or minimal wastewater treatment. One of the main limitations of SAT of PE is rapid clogging of the infiltration basin due to high suspended solid concentrations. Some pre-treatment of PE before infiltration is likely to reduce this limitation, ...
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Aire-O2’s Cold Weather Legacy - Municipal Wastewater Treatment System - Dawson, MN - Case Study
Project Background Process control is key to maximizing wastewater treatment efficiency while minimizing operating costs. Implementing the right process control system in conjunction with the right equipment can save money on electrical costs and equipment maintenance. The wastewater plant for the city of Dawson, MN, uses a Tri-Oval oxidation ditch from Aire-02 for primary treatment of its ...
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Sustainable Recycling Company-bioFAS MBBR case study
The Problem: The Sustainable Recycling Company centralized wastewater treatment (CWT) facility located in Connecticut. They process oily wastewater streams from a variety of sources via an integrated treatment process using collection, oil water separation, ultrafiltration, chemical precipitation. The pretreated wastewater is highly loaded with BOD and COD and the local POTW in Connecticut ...
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Membrane Bioreactor for the treatment of natural rubber wastewater
A membrane bioreactor was set up using two pieces of Kubota flat sheet membranes, with nominal pore size of 0.4 ∝m and a total effective area of 0.2 m²atex concentrate processing factory. A steady-state MLSS concentration was attained at 8500 mg/L during biomass acclimatisation. A critical flux of 0.01224 m³/m²h was determined using the flux step method, whereas an optimum ...
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Case Study: Precision Machine Shop Eliminates Sewer Discharge
Samsco Water Evaporator enables both cost reduction and elimination of sewer discharge. TEC, Inc. (Rockville, MD), providers of precision sheet metal fabrication and precision machining, for more than thirty years, has partnered with many well-known technology companies to meet their need for superior quality, precision metal products. Their offerings range from simple metal components to ...
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Industrial wastewater treatment for FLATSCHER in Unken, Austria - Case Study
Unlocking a hidden opportunity With no wastewater treatment system in place, FLATSCHER ERDBAU & SCHOTTERWERK Ges.m.b.H faced a number of challenges that were threatening the company’s business. The challenge: Reuse wastewater and boost operating margins A nearly full disposal pond, with slurry too fluid to transport but too thick to pump, had led to an acute shortage of both ...
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How EPCOR Water Solved Sun City Pump Stations Non-Dispersibles problem
It was the 1970’s. Fat neckties, leisure suits, and wide collars abounded, and pensioners flocked in droves to escape harsh Midwestern weather in favor of Arizona’s mild winter climate. Sun City grew like wildfire, and its infrastructure soon caught up, including a new wastewater treatment plant. Fast-forward forty years. The bad fashion of the 70’s is now a thing of the past, ...
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Application of a novel sampling bailer device for the analysis of dissolved methane concentrations in municipal wastewater during and following anaerobic treatment
Modern wastewater utilities need to be able to measure and quantify the amount of methane from their treatment facilities in order to understand the potential energy that can be produced and the amount of methane being lost. This paper describes the application of a novel sampling bailer designed for the collection of wastewater samples that minimises methane losses. Samples collected during ...
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