respirometry Articles
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BM Respirometry a state of the art technology
BM respirometery is a technology where the traditional and most advanced respirometry techniques are gathered in one exclusive design developed by SURCIS Company. BM Respirometry makes use of a single reaction vessel, that in certain modes, can replicate the actions that occur at a treatment plant within the conditions set for the test. The BM-respirometers, using powerful software, provide a ...
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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BM Respirometry System for essential COD fractionation in wastewater
Wastewater characterization is nowadays considered an indispensable step that provides all the necessary information for a reliable management and design of biological treatment processes. This characterization should mainly include the chemical oxygen demand (COD) fractionation as an indispensable tool for all that. COD fractionation involves identification of non-biodegradable and ...
By SURCIS, S.L.
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Advanced respirometry for activated sludge process
Introduction Respirometry is the measurement and interpretation of the biological oxygen consumption rate under well defined experimental conditions. Because oxygen consumption is directly associated with both biomass growth and substrate removal, respirometry is a very useful technique for monitoring, modeling and control of the activated sludge process The Respirometry technology is a well ...
By SURCIS, S.L.
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Biodegradable organic matter in domestic wastewaters: comparison of selected fractionation techniques
The first objective of this work was to evaluate the ability of the long-term BOD tests to provide the total biodegradable COD (BCOD) for domestic wastewaters. Results show that the method is repeatable (using two different volume samples, 97 and 164 mL) and that the fractions of BCOD determined were not statistically different from the one obtained by respirometry (at low S/X ratio). ...
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Basic protocol of BM respirometry measurements and applications for activated sludge process management and energy optimization
Introduction The use of the BM advanced respirometry system enables the user to get the precise calculation of the operating parameters and limit set points that any activated sludge actually needs within the framework of an energy optimization. For that reason, the proper use of this respirometry is more than justified; and not only because of getting the parameters for a good process ...
By SURCIS, S.L.
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BM - Respirometry Systems
The BM Respirometry is a technology designed by SURCIS that combines the traditional Respirometry with a state of the art method that permits to carry out different types of tests on a fast and simple way to measure the oxygen uptake and derived parameters from the microorganisms of the activated sludge in any biological wastewater treatment plant. The key points of the BM Respirometry: . Direct ...
By SURCIS, S.L.
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Monitoring the nitrification and identifying the endpoint of ammonium oxidation by using a novel system of titrimetry
Based on the structure of the hybrid respirometer previously developed in our group, a novel implementation for titrimetry was developed, in which two pH electrodes were installed at the inlet and outlet of the measuring cell. The software capable of digital filtering and titration time delay correction was developed in LabVIEW. The hardware and software of the titrimeter and the respirometer ...
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Study about the treatability of an industrial stream by means advanced BM Respirometry - Case Study
When it is needed to know whether a particular type of industrial stream can be treated biologically, either because it is expected to be incorporated into the global influent of the treatment process or because has to be individually eliminated in a new biological treatment, it is necessary to know its biodegradable character, degree of toxicity or possible inhibition that could cause in the ...
By SURCIS, S.L.
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The kinetics for ammonium and nitrite oxidation under the effect of hydroxylamine
The kinetics for ammonium (NH4+) oxidation and nitrite (NO2−) oxidation under the effect of hydroxylamine (NH2OH) were studied by respirometry using the nitrifying sludge from a laboratory-scale sequencing batch reactor. Modified models were used to estimate kinetics parameters of ammonia and nitrite oxidation under the effect of hydroxylamine. An inhibition effect of hydroxylamine on the ...
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An integrated system for wastewater COD characterization and a case study
The guidelines of Activated Sludge Model (ASM) can make the use of modeling more straightforward and systematical. Therefore, this paper aims to develop a guideline for wastewater COD characterization. Four physical-chemical methods were compared experimentally for wastewater characterization in this paper and flocculation + 0.45 μm membrane filtration combining respirometry was selected to ...
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Application of advanced Respirometry in the Nitrification assessment for different levels of Temperature, pH and Oxygen
Abstract Environmental factors control the rate of nitrification. For a determined substrate concentration, the most significant environmental factors are temperature, pH and oxygen availability. The well known critical influence of those factors on the nitrification are here analyzed by making use of a specific software and advanced respirometry based on a dynamic LFS system, where the test ...
By SURCIS, S.L.
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Steps for a BM respirometry test with the special reactor for MBBR
1. Load de biomass carriers in the reactor cage 2. Place the filled cage into de reactor vessel loaded with surrounding mixed‐liquor of the actual process 3. Install reactor assembly and connectors in the analyzer console 4. Set the test configuration 5. Run the test 6. Check measurements throughout the test 7. See ...
By SURCIS, S.L.
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BM Respirometry applied to a novel control strategy of nitrification in a wastewater biological treatment
Abstract In wastewater treatment plants, the biological nitrogen removal (BNR) has acquired critical importance, which makes that in the majority of the cases the overall process control largely depends on the control of this treatment. The normal aerobic process of nitrification is performed by specific aerobic living microorganisms and a lack of information on their bioactivity may be cause of ...
By SURCIS, S.L.
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Application of advanced Respirometry in the Nitrification assessment for different levels of Temperature, pH and Oxygen
For a determined substrate concentration, the most significant environmental factors are temperature, pH and oxygen availability. The well known critical influence of those factors on the nitrification are here analyzed by making use of a specific software and advanced respirometry based on a dynamic LFS system, where the test conditions can be set in the corresponding test-settings board and ...
By SURCIS, S.L.
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Analysis of the impact of the industrial fat, oil and grease (FOG) on a municipal wastewater treatment plant by means Respirometry and microscopic Bioindication
Abstract The main impact that the industrial fat, oil and grease (FOG) could make in a municipal wastewater treatment plant is mainly coming from its slowly biodegradable COD (sbCOD) The wastewater entering in a municipal WWTP tends to include a percentage of slowly biodegradable COD in the range of 35 to 65% of the total COD; but when this percentage surpasses the habitual range, normally it ...
By SURCIS, S.L.
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BM Respirometry benefits for activated sludge process management, research and training
A biological process controlled by non-biological measurements? All treatment plant efficiencies are geared to the waste that they receive. The microorganisms found in the waste need food and oxygen to survive, the food is provided as soluble organic carbon in the waste stream and the oxygen is obtained through the aeration process in the treatment plant. Once a treatment plant has been built, ...
By SURCIS, S.L.
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Using respirometry for energy optimization in a nitrifying biological wastewater treatment system
ABSTRACT Many wastewater treatment plants use more than 50% of their total energy budget in the aeration basin and, when nutrient removal is included in the activated sludge process, it is very common that the majority of oxygen uptake goes to the nitrification process. For that reason, in most wastewater treatment plants, energy optimization is focused on nitrification management. This ...
By SURCIS, S.L.
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Study about the influence of the pH and temperature in a biological wastewater trickling filter with beds of attached biomass to small stones case study
Preliminaries This service is carried out from the agreement reached by Surcis with an engineering company to conduct a study on the approach to analyze the influence of temperature and pH in a municipal wastewater treatment plant provided with a tricking filter process with small stones (as biomass carriers), where there is a very poor nitrification process performance. This biological process ...
By SURCIS, S.L.
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Towards a low complexity carbon removal model for the optimal design of compact decentralised wastewater treatment systems
On-site decentralised wastewater treatment systems can provide a financially attractive alternative to a sewer connection in locations far from existing sewer networks. Operational problems and shortcomings in the design of these systems still occur frequently. The aim of this paper is to provide a low complexity (i.e. easy to calibrate) but still accurate mathematical model that can be used to ...
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