bioreactor control Articles
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Impact of a metabolic uncoupler, 2,4-dichlorophenol on minimization of activated sludge production in membrane bioreactor
This study investigated the effects of 2,4-dichlorophenol on reduction of activated sludge in membrane bioreactors. Significant inhibition on sludge growth and slight reduction in COD removal were observed at higher 2,4-dichlorophenol dosages. The deviation between relative specific COD removal rate (q/q0) and relative specific growth rate (μ/μ0) suggested that a minimum 2,4-dichlorophenol ...
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Selection of Bioreactor Media for Odor Control
The support media is one of the most critical elements of a biofiltration system. In this chapter, biofilters and biotrickling filters will be referred to as “biofilter”, and this distinction will be discussed later in this chapter. The support media’s main function is to provide contact between the gas-phase contaminants and active microbial cultures either immobilized within and/or attached as ...
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Pulse shear stress for anaerobic membrane bioreactor fouling control
Increase of shear stress at membrane surfaces is a generally applied strategy to minimize membrane fouling. It has been reported that a two-phase flow, better known as slug flow, is an effective way to increase shear stress. Hence, slug flow was introduced into an anaerobic membrane bioreactor for membrane fouling control. Anaerobic suspended sludge was cultured in an anaerobic membrane ...
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Control of VOC emissions from a flexographic printing facility using an industrial biotrickling filter
The study of an industrial unit of biotrickling filter for the treatment of the exhaust gases of a flexographic facility was investigated over a 2-year period with the objective to meet the volatile organic compound (VOC) regulatory emission limits. Increasing the water flow rate from 2 to 40 m3 h−1 improved the performance of the process, meeting the VOC regulation when 40 m3 h−1 were used. An ...
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Reduced order model monitoring and control of a membrane bioreactor system via delayed measurements
Activated sludge treatment is one of the most widely used processes for wastewater treatment (WWT). These systems are built with sufficient design margin to allow changes in loading and process conditions. This is necessary and prudent to overcome limitations in measurement, monitoring and controlling of WWT process parameters at the desired frequency. Online sensors for mixed liquor suspended ...
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Why Mass Flow Controllers are Replacing VA Meters in Bioreactors
Upgrading to A Gas Mass Flow Controller Provides Greater Reliability for your Bioreactor When it comes to efficient bioreactor performance, precision mass flow control gas is critical. It is essential that bioreactor manufacturers have reliable, repeatable, and flexible gas supply systems for their bioreactors. Due to the ever-evolving demands and critical and complex nature in the ...
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Mass Flow Control in Bioreactors - Case study
Vogtlin mass flow controllers are an excellent tool for precise control of gas flows in bioreactors. Bio reactors are used for critical and delicate processes where mass flow control of relevant gases need to be reliable, repeatable and flexible. For example, the dissolved oxygen needs to be carefully controlled to obtain repeatable pH control and volumes of fermentation gases like CO and H2 ...
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Investigation on the performance of hybrid anaerobic membrane bioreactors for fouling control and biogas production in palm oil mill effluent treatment
Three different sizes of powdered activated carbon (PAC) were added in hybrid anaerobic membrane bioreactors (AnMBRs) and their performance was compared with a conventional AnMBR without PAC in treating palm oil mill effluent. Their working volume was 1 L each. From the result, AnMBRs with PAC performed better than the AnMBR without PAC. It was also found that adding a relatively smaller size ...
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Design of a generalized predictive controller for a biological wastewater treatment plant
This paper presents a generalized predictive control (GPC) technique to regulate the activated sludge process found in a bioreactor used in wastewater treatment. The control strategy can track dissolved oxygen setpoint changes quickly, adapting to the system uncertainties and disturbances. Tests occur on an Activated Sludge Model No. 1 benchmark of an activated sludge process. A T filter ...
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What Makes Our Bioreactors One of A Kind
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New urban wastewater treatment with autotrophic membrane bioreactor at low chemical oxygen demand/N substrate ratio
The potential for total nitrogen removal from municipal wastewater has been evaluated in an autotrophic membrane bioreactor running with a low chemical oxygen demand (COD)/N ratio to simulate its combination with an upstream physicochemical process that retains a large proportion of organic matter. The tests were conducted in a laboratory scale submerged membrane bioreactor loaded with a ...
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What is Biotechnology and What is it Used For?
Biotechnology is a process which is based on biological systems and living organisms, from which products are synthesized. Such processes have been used for thousands of years to produce and preserve food products. In the modern day, biotechnology has applications within medical research, agriculture, and industrial manufacture.What is Biotechnology Used For?At the heart of biotechnology are ...
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What are Bioreactors?
Bioreactors are vessels in which raw materials are converted to product by the action of living organisms. A bioreactor provides the optimal environment for cells and microorganisms to grow by maintaining pH, temperature, gas, and nutrient supply. What is the Difference Between a Bioreactor and Fermentor? The word ‘Bioreactor’ is often used as a blanket term. However, when the process ...
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A Citizen`s Guide to Bioremediation
What is bioremediation? Bioremediation is a treatment process that uses naturally occurring microorganisms (yeast, fungi, or bacteria) to break down, or degrade, hazardous substances into less toxic or nontoxic substances. Microorganisms, just like humans, eat and digest organic substances for nutrients and energy. In chemical terms, 'organic' compounds are those that contain carbon and hydrogen ...
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