biomass monitoring Articles
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BugLab Visits The MiL
The MiL was recently visited by Dr. Martin Debreczeny, Ph.D. and co-founder of BugLab, LLC. Dr. Debreczeny brought with him BugLab’s BE2100(R) Biomass Monitor, which is a non-invasive optical monitoring system that is designed to measure biomass growth from a wide variety of glass vessels and stainless steel vessels with viewing ports. Unlike traditional optical biomass probes, ...
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Agricultural biomass monitoring on watersheds based on remotely sensed data
There is a close quality relationship between the harmful levels of all three drought indicator groups (meteorological, hydrological and agricultural). However, the numerical scale of the relationships between them is unclear and the conversion of indicators is unsolved. Different areas or an area with different forms of drought cannot be compared. For example, from the evaluation of ...
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Comparison of microbial activity in anaerobic and microaerobic digesters
Microaerobic alternative of anaerobic digestion offers many advantages especially when sulfide concentration in the digester is high. For better understanding of the microaerobic technology more detailed characterization of biomass activity is needed. Two equal digesters were operated under the same condition except of microaeration in one of them. During long term operation of anaerobic and ...
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Tungsten effects on microbial community structure and activity in a soil
Tungsten, once deposited onto a soil as a result of private, industrial, and military activities, may persist as tungstate anion or, via polymerization, as a variety of poly-tungstate species, each with varying solubility and soil sorption characteristics. In this study, the impact of weathered tungsten on a soil microbial community was measured. Fatty acid analyses indicated that weathered ...
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Anaerobic digestion of waste biomass from the production of L-cystine in suspended-growth bioreactors
Waste biomass from the industrial production of the amino acid L-cystine contains above-average concentrations of organic pollutants and significant concentrations of nitrogen and sulfur. The specific biogas production (SBP) of waste biomass was monitored in parallel suspended-growth laboratory anaerobic bioreactors. After severe inhibition was observed, three different procedures were applied ...
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Legionnaires Disease and 2nd Generation ATP
As recent events in Quebec, Canada have shown, outbreaks of Legionnaire’s Disease continue to happen around the world. As our ability to diagnose this ailment improve, it is not surprising that the number of confirmed cases continues to rise. Conventional wisdom states that the bacteria responsible for this disease – Legionella pneumophila – have a tendency to grow in cooling ...
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Using ATP to Measure Living Biomass in Wastewater
Bioreactors harness the ability of naturally-occurring microorganisms to break down environmental contaminants discharged from cities and industries. Becasue they are the engine driving the process, it is critical to closely monitor the quantity and quality of these microorganisms. 2nd Generation ATP provides wastewater treatment operators with the ultimate tool for accurately measuring total ...
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High strength distillery wastewater treatment by a PAC-MBR with low PAC dosage
Augmentation of membrane bioreactors (MBRs) with activated carbon is established to offer several operational advantages. This work investigates the influence of low dosing (2 g/L) of powdered activated carbons (PACs) with different characteristics on the performance of MBR treating high strength molasses distillery wastewater containing difficult-to-biodegrade recalcitrant components. Two ...
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Monitoring of phytoplankton biomass and nutrients in a polluted stream
The spatial and temporal variations in the concentrations of nutrients (NH4+, NO2−, PO43−, SiO4−) and chlorophyll a were monitored simultaneously in a slow-flowing watercourse (Saricay Stream, Turkey), which runs in a ruralurban gradient. Chlorophyll a concentrations ranged between 0.044 g l-1 and 206.15 g l-1 and, in general, the higher concentrations of chlorophyll a and ammonium were measured ...
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CH#831 - Municipal Wastewater Treatment Plant
Introduction The Wastewater Treatment Plant is a rotating biological contactor treatment process preceded by bar screening, grit removal and primary settling. Subsequent to the secondary treatment process, the flow stream enters a chlorine contact tank and then goes to the receiving stream. The program study was started on March 4th. The objectives were a recovery from filamentous infestation, ...
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Assessment of the endogenous respiration rate and the observed biomass yield for methanol-fed denitrifying bacteria under anoxic and aerobic conditions
In this study, the endogenous respiration rate and the observed biomass yield of denitrifying methylotrophic biomass were estimated through measuring changes in denitrification rates (DNR) as a result of maintaining the biomass under methanol deprived conditions. For this purpose, activated sludge biomass from a full-scale wastewater treatment plant was kept in 10-L batch reactors for 8 days ...
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Anaerobic Biomass Activity Tests
Anaerobic Biomass Activity Tests The methane production activity of anaerobic sludges is related to the history of the sludge, the biomass yield from the wastewater the sludge has been treating, the fraction of methanogens, and the presence of toxic substances. Best performance can be achieved from an anaerobic treatment plant if the operator measures the Specific Methanogenic Production (SMP) ...
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On the thermal oxidation stability of pyrolysis biomass oil
The rice husk-based biomass-oil is composed of complex organic compounds and water, and its oxidation stability has a direct influence on its physico-chemical property and application. The advanced oxidation experiments were carried out through the flowing of air and oxygen respectively. The influences of four factors, including gas flux, oxidation time, temperature and copper foil, on the ...
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Clofibric acid and gemfibrozil removal in membrane bioreactors
The removal of two blood lipid regulators, clofibric acid (CLA) and gemfibrozil (GFZ), was evaluated using two identical aerobic membrane bioreactors with 6.5 L effective volume each. Polysulfone ultrafiltration hollow fiber membranes were submerged in the reactors. Different operating conditions were tested varying the organic load (F/M), hydraulic residence time (HRT), biomass concentration ...
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Prescribed burn smoke impact in the Lake Tahoe Basin: model simulation and field verification
Smoke dispersion modelling based on the Fire Emission Production Simulator and the Hybrid Single Particle Lagrangian Integrated Trajectory (FEPS-HYSPLIT) model was applied to prescribed burns in the Lake Tahoe Basin (LTB) during fall 2011. This, in conjunction with measurements at sources and real-time ambient PM 2.5 monitoring around LTB, served to evaluate the prescribed burning impacts on ...
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Biomass properties and permeability in an immersed hollow fibre membrane bioreactor at high sludge concentrations
This study aimed to investigate the influence of biomass properties and high mixed liquor suspended solids (MLSS) concentrations on membrane permeability in a pilot-scale hollow fibre membrane bioreactor treating domestic wastewater. Auxiliary molasses solution was added to maintain system operation at constant food-to-microorganisms ratio (F/M = 0.13). Various physicochemical and ...
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Methods for increasing the rate of anammox attachment in a sidestream deammonification MBBR
Deammonification (partial nitritation-anammox) is a proven process for the treatment of high-nitrogen waste streams, but long startup time is a known drawback of this technology. In a deammonification moving bed biofilm reactor (MBBR), startup time could potentially be decreased by increasing the attachment rate of anammox bacteria (AMX) on virgin plastic media. Previous studies have shown ...
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The Development of Water Quality Detectors and Their Impact on Water Resource Management
Abstract:Water quality is a valuable natural resource and is vital to human survival and development. However, with the rapid development of industrialization and urbanization, as well as the continuous growth of population, water resources are polluted to different degrees, which seriously threatens the sustainable development of human health and ecological environment. Therefore, the protection ...
By JXCT
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Simulation and verification of hydraulic properties and organic matter degradation in sand filters for greywater treatment
To evaluate the treatment performance of vertical flow sand filters, the HYDRUS wetland module was used to simulate treatment in an experimental set-up. The laboratory filters were intermittently dosed with artificial greywater at a hydraulic loading rate of 0.032 m3 m−2 day−1 and an organic loading rate of 0.014 kg BOD5 m−2 day−1. The hydraulic properties of the ...
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New technologies for measuring the humidity of biomass
Methods applicable to a great variety of solid biofuels In recent years, systems have sprung up which use near infrared X-ray (NIR) spectroscopy, radio frequency (RF) and microwave spectroscopy as alternatives to the traditional method of measuring humidity by weight difference in the fuel burner. What these methods have in common is that they can be used for a great variety of solid biofuels, ...
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