sludge treatment system Articles
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Bio-Microbics RollsAIR New Aeration System
The RollsAIR Extended Aeration System is an Activated Sludge Treatment system utilizing an aerobic wastewater treatment process It is designed to be a simple, low-cost, robust system of its type. The complete RollsAIR system uses the MyTEE in the "headworks" zone to screen trash and settle grit. The MyTEE screen deflects non-soluble solids to stay in the vault. All non-biological screened and ...
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Small-scale sludge treatment system for Daeum Mien – Kandal Province: A GRET Sanitation Project in Cambodia
The French NGO GRET, established in 1976, has a mission of fair international development, through designing and implementing field projects, providing expertise, conducting research, and running information and exchange networks for development issues, and currently works in 27 countries. As part of this mission, GRET professionals have taken on various water ...
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Sludge treatment in Germany more than 50 years of experience current discussions – future prospects
Abstract In Germany, nowadays, more than 97% of inhabitants and industry are connected to modern wastewater and sludge treatment systems. Long-term experience exists in Ger-many especially with sludge digestion. These experiences will be presented and a spe-cial focus will be on technologies for sludge pre-treatment such as e.g. thermal hydrolysis or technical solutions to recycle the nutrients ...
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Development of a down-flow hanging sponge reactor for the treatment of low strength sewage
The process performance of a down-flow hanging sponge (DHS) reactor for treating low strength sewage (biochemical oxygen demand (BOD) 20–50 mg/L) was investigated in Bangkok, Thailand. The hydraulic retention time (HRT) was set at 4 h during the start-up period and was reduced to 1.5 h in a stepwise manner. Throughout the 300-day operational period, the DHS reactor shows high performance ...
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Genome-scale metabolic modeling to provide insight into the production of storage compounds during feast–famine cycles of activated sludge
Studying storage metabolism during feast–famine cycles of activated sludge treatment systems provides profound insight in terms of both operational issues (e.g., foaming and bulking) and process optimization for the production of value added by-products (e.g., bioplastics). We examined the storage metabolism (including poly-β-hydroxybutyrate [PHB], glycogen, and triacylglycerols ...
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Fixed activated sludge treatment (FAST®) process technology overview
Biological treatment systems for small communities and even single-family dwellings have been available in the general water pollution control market for many years. These systems are basically scaled-down versions of the activated sludge process, utilizing suspended growth systems. Historically, the main operational problem associated with these systems has been the management of the sludge ...
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Black and Graywater: An overlooked environmental issue
Scienco/FAST, a manufacturer of marine sewage devices (MSD) based in St. Louis, Mo., has installed nearly 5,000 of its MSD units aboard towboats, tugs, offshore supply vessels, diving support vessels, pilot boats, containerships, tankers, bulk carriers, cruise ships, and many more types of vessels all around the world. The company has more than 50 years of research, development and real-world ...
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Gas composition of sludge residue profiles in a sludge treatment reed bed between loadings
Treatment of sludge in sludge treatment reed bed systems includes dewatering and mineralization. The mineralization process, which is driven by microorganisms, produces different gas species as by-products. The pore space composition of the gas species provides useful information on the biological processes occurring in the sludge residue. In this study, we measured the change in composition ...
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Energy reduction in activated sludge - Case study
Owner: Available by request. Contact Medora Corporation 866-437-8076 or info@medoraco.com System Overview: This is an activated sludge wastewater system that serves a city of approximately 16,000 residents. The North basin (see above photo) is the main reactor basin where aeration is supplied for mixing. The North basin covers 1.74 surface acres with an operating depth of 13.5 ft. The system ...
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Sustainable wastewater treatment chemicals in a chicken processing plant
Atana Ltd was invited to evaluate the potential for introducing an organic, sustainable wastewater treatment regime into a chicken processing plant. The flow was approximately 120m³ (over 18 hours per day). The plant killed around 126000 birds per day and the sludge volume produced from their effluent treatment plant (which encompassed dissolved air flotation) per annum was around 13000 ...
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Wondering which MBR brand to choose? Here are five strong arguments to consider PHILOS Megaflux MBR
MBR is rapidly gaining popularity in the wastewater treatment industry due to the rise of enclosed spaces, tougher wastewater disposal policies, and lower membrane prices around the world. MBR has revolutionized the way we handle wastewater, offering several benefits over conventional activated sludge treatment systems, such as a smaller footprint, higher-quality effluents, lower sludge demand, ...
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Dewatering Paper Mill Lagoon Sludge - Ancram, NY - Case Study
Sludge from the secondary treatment system lagoon at the New York mill of Schweitzer-Mauduit International, Inc. had to be removed. Geotube technology with SmartFeed Chemical Conditioning System supporting technology was the most cost-effective and efficient method of containing and dewatering the sludge. The dredging contractor removed 3,285 cubic yards of sludge from the lagoon in five ...
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Start-up of upflow anaerobic sludge blanket reactor at brewery case study
Start-up Seed Sludge Augmented Using Microcat - UASB BioBlend Problem The commissioning of a new wastewater treatment system consisting of an upflow anaerobic sludge blanket reactor (UASB) can be slow and expensive. In this case the UASB is followed by an aerobic activated sludge treatment system at a brewery.The system is located in a rapidly growing part of Asia. Wastewater Parameters: ...
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Truxor complements innovative desludging system - Case Study
The Swiss company uwt.swiss offer unique mobile desludging systems for the restoration of waterways and for industrial sludge treatment. To optimize the system, its connected to a Truxor machine that pumps in water, sludge, sand, and coarse material. The innovative uwt.swiss mobile desludging system is ideally suited for cleaning and desludging canals and waterways in densely populated urban ...
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Dewatering sludge originating in water treatment works in reed bed systems
The dewatering process of the liquid water works sludge was examined in a trial with a series of six trial beds, each 20 m2. These were monitored from April 2008 to June 2010. It is possible to get the vegetation to grow in ferric sludge (∼300,000 mg Fe/kg dry solid, pH 7,7). It has not been necessary to use fertilizer. The influence of the loading programs (15–50 kg dry solid/m2/year) was tested ...
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Operational strategy, economic and environmental performance of sludge treatment reed bed systems – based on 28 years of experience
Sludge treatment reed bed (STRB) systems have been used for dewatering and mineralisation of sludge in Europe since 1988. STRB systems provide substantial environmental, economic, and operational benefits compared to mechanical sludge dewatering solutions such as belt presses and centrifuges. They require less energy, no chemicals, reduce the sludge volume and produce bio solids with dry ...
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Warden works with the largest Norwegian owned Water treatment company - Case study
Sterner AS is the largest Norwegian owned water treatment company who focus on aquaculture and RAS (Recirculation Aquaculture System) technology for fish farming. During the last year Sterner AS has built and completed an onshore RAS based fish farm plant for their customer Eidesvik Settesfisk AS. The RAS plant consists of fish breeding tanks (2 x Ø15 m - each with a water volume of 780 ...
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Decentralized Wastewater Treatment
An application used worldwide, now growing in US to address the needs of small communities and developments Conventional sewer operations managed by small communities provide centralized treatment of wastewater of which residents are accustomed. But the expense of operating these systems as they expand with miles and miles of sewer lines is staggering. Expanding sewer line infrastructure, ...
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Dynamic modelling of nitrous oxide emissions from three Swedish sludge liquor treatment systems
The objective of this paper is to model the dynamics and validate the results of nitrous oxide (N2O) emissions from three Swedish nitrifying/denitrifying, nitritation and anammox systems treating real anaerobic digester sludge liquor. The Activated Sludge Model No. 1 is extended to describe N2O production by both heterotrophic and autotrophic denitrification. In addition, mass transfer ...
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Modeling of an immobilized sludge reactor with polyethylene glycol (PEG)-pellet to remove NH4-N from groundwater
An immobilized sludge system model was developed to simulate nitrification (NH4-N → NO3-N) and denitrification (NO3-N → N2) processes in a PEG-pellet (microorganisms entrapped in polyethylene glycol (PEG)) reactor for removing NH4-N from groundwater. The nitrification and denitrification processes were described by modifying the Michaelis-Menten kinetic incorporating the factors of dissolved ...
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