eps Articles
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The Resilience of Biofilms
These elegant formations of microbes enable robust wastewater treatment Some of Fluence’s signature wastewater treatment solutions are based on membrane aerated biofilm reactor (MABR) technology, which was first introduced in the 1990s. MABR harnesses biofilm, an extremely resilient mode of life that has been found in sediment dating back 3.4 billion years. These formations of microbial ...
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Stripper Wells goes from 1 BBL to 15 BBL for less $100/day
Feb 2017, Jenfitch, LLC working with a private independent oil service firm from Houston, Texas recently conducted a field study on four different low producing oil wells (Stripper Wells) in Pecos County, TX. These wells were generating 1-2 barrels of oil per day. Using several different methods of injecting JC 9450 into the well, the production increased up to 15 barrels per day for 5 days and ...
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Effects of nutrient loading on Anabaena flos-aquae biofilm: biofilm growth and nutrient removals
Effects of three different nutrient loadings (low nutrient loading, medium nutrient loading and high nutrient loading, denoted as LNS, MNS and HNS, respectively) on the structure and functions of algal biofilm using Anabaena flos-aquae were investigated using synthetic wastewater. Nutrients removal efficiencies, biofilm thickness, microalgae dehydrogenase activity (DHA) and exopolysaccharide ...
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Mechanism and kinetics of biofilm growth process influenced by shear stress in sewers
Sewer biofilms play an important role in the biotransformation of substances for methane and sulfide emission in sewer networks. The dynamic flows and the particular shear stress in sewers are the key factors determining the growth of the sewer biofilm. In this work, the development of sewer biofilm with varying shear stress is specifically investigated to gain a comprehensive understanding ...
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The effect of flow velocity on the distribution and composition of extracellular polymeric substances in biofilms and the detachment mechanism of biofilms
Flume experiments were conducted to investigate the distribution and composition of extracellular polymeric substances (EPS) in biofilms and the detachment mechanism of biofilms grown under different flow velocity conditions. The results of biofilm growth kinetics showed that the growth trends were coincident with the logistic growth model. The growth kinetics parameters reached their maximum ...
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Strong selection pressures impact the capacity of flocculating activated sludge bacteria to granulate
The capacity of activated sludge (AS) microbial populations to form dense granules offers the potential to establish efficiently settleable biomass. This has the potential to circumvent problems around ineffective solids–liquid separation and sensitivity to variable chemical oxygen demand (COD) loads. Although a number of studies have evaluated aerobic laboratory granulation reactors as ...
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Transparent Exopolymer Particles (TEP): an overlooked factor in the process of BIOFILM FORMATION in aquatic environments
AbstractWe hypothesize that transparent exopolymer particles (TEP), present in high concentrations in most sea and freshwaters, are critical agents for biofilm initiation and development in many natural and anthropogenic aquatic environments. These gel-like particles appear in many forms, amorphous blobs, clouds, sheets, filaments or clumps ranging in size from ~2 to ~200 µm. TEP are mostly ...
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TEP and biofilm fouling on membranes
Summary Biological fouling on membranes is a major problem in desalination and water purification plants. Oceanographers and limnologists have found that most marine and fresh waters are full of microscopic Transparent Exopolymer Particles, otherwise known as TEP. In this article, aquatic microbiologist Tom Berman and Filtration Specialist Marina Holenberg (Amiad Filtration Systems, Amiad, ...
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