biofilm Articles
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Revised Paradigm of Aquatic Biofilm Formation facilitated by microgel Transparent Exopolymer Particles
PAPER IN PNAS 109 (23) 9119-9124 , 2012 doi/10.1073/pnas.1203708109 ABSTRACT Transparent exopolymer particles (TEPs) are planktonic, organic microgels that are ubiquitous in aqueous environments. Increasing evidence indicates that TEPs play an active role in the process ofaquatic biofilm formation. Frequently, TEPs are intensely colonized by bacteria and other microorganisms, thus serving as ...
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Removal of nitrogen from secondary effluent of a petrochemical industrial park by a hybrid biofilm-carrier reactor with one-stage ANAMMOX
A laboratory study was undertaken to explore the capability of one-stage ANAMMOX in a hybrid biofilm-carrier reactor (HBCR) fed with petrochemical wastewater. Under favorable operating conditions in continuous-flow operations (at the dissolved oxygen level of 0.5–1.0 mg L−1), the average total nitrogen (TN) removal efficiency reached 62–67% and approximately ...
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Kuriverter IK-110 application in industrial water preparation for a boiler system
Download our case study about successful treatment with Kuriverter IK 110 for effective elimination of biofilms on RO membranes. Learn how we saved 28% in total operation costs using Kuriverter IK 110 in industrial water preparation for boiler system. Download CS126 here: https://www.kurita.eu/en/case-studies ...
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Revised paradigm of aquatic biofilm formation facilitated by microgel transparent exopolymer particles
Transparent exopolymer particles (TEPs) are planktonic, organic microgels that are ubiquitous in aqueous environments. Increasing evidence indicates that TEPs play an active role in the process of aquatic biofilm formation. Frequently, TEPs are intensely colonized by bacteria and other microorganisms, thus serving as hot spots of intense microbial activity. We introduce the term ...
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Evaluation of ultrasound technology for the disinfection of process water and the prevention of biofilm formation in a pilot plant
In this study, we investigated the use of ultrasound for the disinfection of process water as an alternative for more traditional techniques, like chlorination and UV-irradiation. A pilot plant was constructed to mimic circulating process water in industrial environments. The disinfection efficiency of ultrasound was assessed and compared to UV-treatment and chlorination. In addition, the ...
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The importance of a dispersant in a Legionella Control Program
Outbreaks in Legionnaires’ Disease such as the one in the South Bronx of New York in August 2015 highlights the importance of having effective biofilm control as part of your overall industrial water treatment program. Colorized scanning electron micrograph (8000X) depicting a large grouping of Gram-negative Legionella pneumophila bacteria (Source: Centers for Disease Control). ...
By AMSA, Inc.
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Application of biofilm reactors to improve ammonia oxidation in low nitrogen loaded wastewater
An airlift reactor using zeolite particles as carrier material was used for the nitrification of effluents from the aquaculture industry. During the start-up the nitrogen concentration was kept around 100 mg NH4+-N/L to develop the nitrifying population. Later it was decreased down to around 3 mg NH4+-N/L and the dilution rate was increased up to 4.8 d-1 in order to simulate the conditions in a ...
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Learning to Live With Biofilm: The Challenge of an Effective Biofilm Control Program
The organism always wins. This is the challenge of biofilm control. Microbial biofouling and its root cause, biofilm, cannot be totally prevented, at least for a practical length of time in industrial settings. We have many approaches to keep it at bay but it will always be with us. In industrial water treatment, our goal is to keep biofouling under control. We should target treatments that ...
By AMSA, Inc.
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Bacterial community structure in cooling water and biofilm in an industrial recirculating cooling water system
Microbial fouling is a serious problem in open recirculating cooling water systems. The bacterial communities that cause it have not been fully understood. In this study, we analyzed the community structure of free-living bacteria and particle-attached bacteria in cooling water, and bacteria in biofilm collected from the wall of the water reservoir in an industrial recirculating cooling water ...
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Disinfection and Sanitization for Residential Water Treatment: Part 2
In this 5 part series we will discuss a very important and at times overlooked area of residential water treatment, the Disinfection and Sanitization for Residential Water Treatment. The information in this series was prepared by Larry Zinser of Master Water Conditioning. Larry Zinser is a sales engineer with Master Water Conditioning. Following an education with a Bachelor's Degree in ...
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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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Ultrasonic technology in cooling towers
Ultrasound technology is an effective and environmentally friendly method to minimise chemical consumption and improve the efficiency of a cooling tower, says Ander Paz Blazquez. Low-intensity ultrasound has been used for more than a decade in order to control algae and biofilm growth. Latest innovations have concluded that effective algae control is achieved through the use Ultrasound ...
By LG Sonic
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Biological wastewater treatment Dalian, China
To manage the demands set for the plant, a biological treatment with fixed bed was chosen. The water first undergoes pre-treatment by screening and grit/grease removal. Primary sedimentation is done in 4 tanks with lamellar sedimentation. The first step in the biological treatment consists of BOD, COD and SS removal in 12 Biofor filters. In these filters round expanded clay aggregates, ...
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Ideal for onsite chlorine applications - Case Study
Water treatment could be applied to various fields, our anodes are currently used for Sodium Hypochlorite and Electrolysis of water. Sodium hypochlorite (NaOCl) is a compound that can be effectively used for water purification. It is used on a large scale for surface purification, bleaching, odor removal and water disinfection. It can be also applied in sanitary wastewater and industrial ...
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Economical calculations for the use of Ozone in Cooling Towers
Abstract Ozone has been successfully applied to industrial cooling water systems with the resultant improvement in operational efficiency due to increased heat transfer, reduced system corrosion, improved environmental impact and reduced on-going chemical expenditure. The aim of this paper is to provide practical advice on the options available for the application of ozone and the potential ...
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The importance of Water Treatment in industry
Water treatment is an important industry requirement and comes under 4 main branches which include boiler water treatment, cooling water treatment, water purification and the treatment of wastewater effluent. It is considered that these cover the majority of Water treatment processes in the UK and Internationally. Water treatment is often seen as an additional cost on top of an already very ...
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Biotreatment of off-gases from a waste water buffer
1. The Problem As on alternative to an initially planned adsorptive treatment by activated carbon of gases emitted by a buffer for from industrial effluents, also a biological treatment had been was investigated. 2. Solution of the problem Treating the off-gases in a two-stage bio-trickling filter using microorganisms attached to LEVAPOR carrier the problem has been was ...
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Chlorine dioxide disinfectant benefits
What is chlorine dioxide? Chlorine dioxide (ClO2) is a highly effective, eco-friendly micro biocide that carries the US EPA, FDA and UK Government approvals for many of its uses. It is a selective oxidant that eliminates many pathogenic organisms including Legionella, Listeria, Salmonella, amoeba cysts, Giardia cysts, E. Coli, and Cryptosporidium. Importantly, CIO2 also destroys biofilms so ...
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Reverse Osmosis Technology - Kuriverter Rc.
Summary Applications using Reverse Osmosis membrane technologies are everywhere in our lives – from tiny under counter units polishing our drinking water through industrial units preparing water for processes or purifying effluents for reuse and massive seawater desalination plants producing thousands of m³ of drinking and irrigation water every day. The membranes used in this ...
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Winterizing your Cooling Tower: Clean or Disinfect?
Fall is a busy season for our water quality engineers. They’re helping facility managers prepare open-loop water systems for winter and low-flow season. Part of those winter preparations involves a thorough cooling tower cleaning or disinfection. Read on to learn why that’s important, as well as what to expect. Why Clean Or Disinfect Your Cooling Tower? Like all of the equipment in ...
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