Refine by
Respirometry Articles & Analysis
58 articles found
Our application scientists have been working on a new protocol to utilise our Gas Endeavour® III instrument for biochemical oxygen demand (BOD) tests. Biochemical Oxygen Demand (BOD) testing is essential for evaluating organic pollution in wastewater. Traditional methods for conducting this test, such as the dilution method or manometric systems, are limited in their capacity for processing ...
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 ...
COD fractionation involves identification of non-biodegradable and biodegradable COD together with readily biodegradable and slowly biodegradable fractions. The unique SURCIS BM Respirometry allows the automatic and fast (usually in less than one hour) determination of the total biodegradable COD (bCOD) and the readily biodegradable COD (rbCOD). ...
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 ...
In fact, this same toxic effect can be translated to the bCOD/DQO (Biodegradable COD / COD) where, by varying the ratio [sample volume/ sludge volume] in the respirometry tests, there is the possibility to generate different levels of apparent biodegradability degrees, when the reality is that the relatively low values of DQOb are the consequence of a certain degree of toxicity ...
In a single batch reactor, the measuring system can work as LSS and LFS batch respirometry. The system is optimized by a one-sense membrane device, that together with a dividing plate, is able to isolate the measuring chamber and avoid bubbles against the DO sensor. OUR This mode is making use of the LSS respirometry type. The OUR mode consists of a single test ...
The main objective of this study is to demonstrate the importance of mixing conditions as a source of inconsistencies between half-saturation indices in comparable systems (e.g. conventional activated sludge, membrane bioreactor) when operated at different conditions or different scales. As proof-of-principle, an exemplary system consisting of the second vessel of a hybrid respirometer has ...
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 their levels modified throughout the test performance. ...
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 their levels modified throughout the test performance. ...
However, if the application is not adequate, this practice may cause environmental contamination. This study used a respirometry test to evaluate the organic matter (OM) decomposition present in natural vinasse and concentrated vinasse (CV), with or without urea addition. ...
Cellular adenosine triphosphate (cATP™) may be used to characterize the biological degradation activity within the anaerobic and aerobic wastewater treatment systems. The feasibility of using cATP™ as a process monitoring parameter for an anaerobic membrane bioreactor was evaluated. Results obtained from batch respirometric anaerobic treatability studies and a continuous sludge-bed anaerobic ...
Evaluating the performance of a wastewater treatment plant (WWTP) requires a good characterization of the biodegradable substrate entering the plant. As is generally acknowledged, the wastewater characteristics under rain or storm weather conditions vary significantly from dry weather conditions but this is rarely accounted for in modelling exercises. In order to address this defect, a ...
Although much of the research assessing the effects of the spill has focused on early life stages of fish, studies examining whole‐animal physiological responses of adult marine fish species are lacking. Using swim chamber respirometry, the present study demonstrates that acute exposure to a sublethal concentration of the water accommodated fraction of Deepwater Horizon crude oil ...
Often those effects are erroneously classified as toxicity, when in fact chances are it is not. BM Respirometry and microscopic Bioindication stand as an effective combination to analyze this situation accurately and figure out some conclusions that could afford to take the corrective actions that can reduce the harmful effects coming from this situation. ...
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 present paper describes a relatively simple, fast procedure whereby the use of an advanced and high sensitivity respirometry system, both parameters are obtained throughout a novel method to accurately determine values of the half-saturation DO constant (KOA) and active nitrifier concentration (XA) from the results of a single respirometry test. ...
BM respirometery is a state of the art technology in 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 mode replicates the actions that occur at a treatment plant under the conditions we set for the test. ...
For this reason, the application of the BM Respirometry, for the goal of getting a determined performance within the frame of energy optimization, has achieved an important role for essential information about the actual nitrification situation but also in other situations under different conditions for the process development. 1. ...
From the arguments above exposed, it exist the logical alternative to carry out the activated sludge process protection and control by means of tests and selective measures of Respirometry based on the oxygen uptake of the genuine microorganisms contained in the own activated sludge as an important complement of the physical-chemical parameters. What is BM ...
For this reason, the application of the BM Respirometry, for the goal of getting a determined performance within the frame of energy optimization, has achieved an important role for essential information about the actual nitrification situation but also in other situations under different conditions for the process ...