biological wastewater Articles
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Eurofarma - A one-stop service, plant engineering and operation management for the production of generic products - Case Study
Eurofarma is one of the leading manufacturers of generic products in Brazil. Increasing demand prompted the company to build a new production plant in São Paulo. EnviroChemie was awarded the contract to build a state-of-the-art wastewater treatment plant. The objective of the plant is to treat the water so that it can be reused, e.g. for irrigation purposes. A combination of processes was ...
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Wastewater COD fractionation in the biological wastewater treatment
Biodegradable (bCOD) Consists of the total fraction from COD that can be biodegradated by the heterotrophic microorganisms. Readily biodegradable (rbCOD, SS) Consists of small molecules that are directly available for biodegradation by heterotrophic microorganisms. Slowly biodegradable (sbCOD, XS) Consists of larger molecules requiring extracellular breakdown (hydrolysis) before being ...
By SURCIS, S.L.
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Practical BM Respirometry for biological wastewater treatment
Three different operation modes While most of the respirometers on the market offer only one operation mode, the BM respirometers have three different operation modes: OUR mode, Cyclic OUR mode, and R mode. Each mode develops different respirograms for automatic parameters including D.O., Temperature, and pH (in BM-Advance) from where specific applications can be made. In a single batch ...
By SURCIS, S.L.
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Electrochemical treatment of residual ammonia nitrogen in biologically pretreated coking wastewater with three-dimensional electrodes
The electrochemical oxidation of the residual ammonia nitrogen contained in biologically pretreated coking wastewater using three-dimensional electrode system was studied. The results show the Ti/RuO2/IrO2 anode plates and the coke have good surface characteristics for the purpose of this study. In addition, studies also show that the three-dimensional electrode system should be able to give a ...
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Modelling nitrite in wastewater treatment systems: A discussion of different modelling concepts
Abstract: Originally presented at the 1st IWA/WEF Wastewater Treatment Modelling Seminar (WWTmod 2008), this contribution has been updated to also include the valuable feedback that was received during the Modelling Seminar. This paper addresses a number of basic issues concerning the modelling of nitrite in key processes involved in biological wastewater water treatment. To this end, we review ...
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Modelling nitrite in wastewater treatment systems: A discussion of different modelling concepts
Abstract: Originally presented at the 1st IWA/WEF Wastewater Treatment Modelling Seminar (WWTmod 2008), this contribution has been updated to also include the valuable feedback that was received during the Modelling Seminar. This paper addresses a number of basic issues concerning the modelling of nitrite in key processes involved in biological wastewater water treatment. To this end, we review ...
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Electron density-based transformation of trimethoprim during biological wastewater treatment
This research investigated the biological transformation of trimethoprim (TMP). Partial TMP removal was observed in the presence of ammonia and toluene, and increasing the solids retention time from 20 days to 60 days improved TMP removal in both the nitrifying and heterotrophic bioreactors. Two TMP-related metabolites were identified, the first (5-(3,4,5-trimethoxybenzyl) pyrimidine-2,4-diamine, ...
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Impact on nitrifiers of full-scale bioaugmentation
Nitrifiers are the slowest growing bacteria used in conventional biological wastewater treatment. Furthermore, their growth rate is seriously hampered by low temperature. As a result, the volume needed for nitrification dominates the volume of the biological reactors at a wastewater treatment plant. As a way of enhancing nitrification and reducing this volume, bioaugmentation can be used. ...
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Is modeling of biological wastewater treatment a mature technology?
Based on three case studies it is demonstrated that the application of mathematical models in biological wastewater treatment has not yet reached its full potential. Model structure uncertainty and correlation of uncertain parameter values make up the first case. The combination of biokinetic and hydraulic models relates to the second case. The evolution of a full scale plant over its life ...
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Wrigley - Multi-step biological wastewater treatment in the production of chewing gum - Case Study
The production of chewing gum generates rinsing and cleaning water. Sugar substitutes, as well as aromas and essential oils are significant wastewater constituents. The production water is collected and conveyed to the Biomar® biological wastewater treatment plant. In addition to homogenisation, pre-acidification takes place in the mixing and equalisation tank. Once the wastewater has been ...
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Wastewater Monitoring Series, Part 1: Identifying the Gaps in Conventional Biomass Test Methods in Wastewater
Biological wastewater treatment systems require living biomass to remove biodegradable contaminants from wastewater. Effective treatment is directly dependent on the concentration of healthy biomass. It stands to reason that having an easy method to directly measure the quantity and quality of living biomass would be tremendously beneficial to the operation of biological wastewater treatment ...
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NI Water Trailblazing -11 ASP-Cons
Northern Ireland - Trailblazing with 11 ASP-Cons Strathkelvin Instruments have optimised 32 of NI Water Biological Wastewater Treatment Plants. The optimisation programme saw 14 sites optimised in 2012/2013 with a further 18 sites optimised for compliance in aeration energy optimisation in the financial year to March 2015. NIW are also leading the industry with the adaptation of the ASP-Con ...
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Application Focus: Biological Wastewater Treatment
In knowing the size and health of the active biomass population in a wastewater treatment process, cause-and-effect relationships can then be established with process variables. If a change in the process is beneficial or detrimental to the population, ATP results will indicate to what degree the population is helped or harmed by the change. Since ATP measurements isolate the living population, ...
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What is biological wastewater treatment?
Biological wastewater treatment harnesses the action of bacteria and other microorganisms to clean water Biological wastewater treatment is a process that seems simple on the surface since it uses natural processes to help with the decomposition of organic substances, but in fact, it’s a complex, not completely understood process at the intersection of biology and biochemistry. Biological ...
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Whitepaper - Wastewater treatment in the dairy processing recovering energy using anaerobic technology industry
Introduction The composition of wastewater from dairy processing plants makes it highly suitable for biological wastewater treatment processing. As well anaerobic biological treatment of the wastewater there is also the option of applying anaerobic biological processes. By applying anaerobic technology a large part of the organic load in the wastewater can be removed and converted into ...
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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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CHIP-tuning for biological wastewater treatment plants
The demand for efficiency improvement in municipal and industrial wastewater treatment plants (WWTP’s) is increasingly based on problems related to the water quality, process stability and/or insufficient performance in the COD removal and/or nitrification process. New, stricter requirements or the need for higher removal efficiency intensify the demand for optimizing the existing ...
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How to Choose the Correct Biological Wastewater Treatment Process for Your Application
There is different discharge restrictions for wastewater produced by different sectors and industries. Treatment systems need to be designed around each individual application in order to specifically target and treat the pollutants produced by them. This is why it is important to choose the correct biological wastewater treatment process for secondary stage wastewater treatment. When choosing ...
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Corus, Europe’s leading Iron and Steel producer, has acquired Strathkelvin’s latest respirometer resulting in the vastly improved security of their Biological Wastewater Treatment Processes in IJmuiden, Netherlands.
Dutch-Anglo iron and steel producer Corus installed a biological wastewater treatment plant that was put into operation at their major production facility in IJmuiden , the Netherlands . Following the first year of operation serious problems were encountered. The most probable cause was toxic components in one of the wastewater flows that dramatically decreased the removal efficiency of the ...
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Anaerobic Biotechnologies
Anaerobic wastewater treatment is the biological treatment of wastewater without the use of air or elemental oxygen. Many applications are directed towards the removal of organic pollution in wastewater, slurries and sludges. The organic pollutants are converted by anaerobic ...
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