WATER / WASTEWATER 15 New e-book on water and wastewater analysis solutions
Analytik Jena has published a new e-book for water and wastewater analysis. It demonstrates efficient methods and solutions for a wide range of selected routine and special applications. The e-book focuses on some central areas of water and wastewater analysis: In addition to the analysis of TOC/TNb and AOX, elemental analysis, and UV/Vis spectroscopy, the e-book also highlights molecular biological detection solutions.
“Water and wastewater analysis is a crucial component of the actions taken by municipalities and states to continuously improve water recycling processes and to make available water resources safer. It is a key element of environmental monitoring,” says Bernd Bletzinger, team leader of Analytik Jena’s environment industry team. “Our mission is to support customers worldwide with instruments and solutions to improve their services and processes and, thus, sustainably increase the quality of environment and life. This e-book was created by us following this intention.”
The new e-book highlights both methodological and technological ways to meet the current challenges in water and wastewater analysis. Today, the entire field of environmental analysis is facing steadily increasing numbers of samples, challenging sample matrices as well as dwindling financial and human resources. Analytik Jena particularly addresses these demands with the application examples and solutions demonstrated in the e-book and therewith provides its expertise to all laboratories in the environmental sector.
The e-book “Water and Wastewater Analysis” marks the start of Analytik Jena’s new environmental campaign, which bundles the Company’s many years of experience and expertise in environmental analysis. The e-book is available free of charge. More information online:
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Modelling of Pollutants in Complex Environmental Systems
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Sludge Interface Measurement Why it is important and why we need it.
Sludge blanket control is a crucial part of any wastewater treatment process and the correct monitoring of this part of the process can have beneficial results in terms of process efficiency and cost savings!
In the primary sedimentation stage, sewage will flow through large tanks – these are commonly called primary clarifiers or primary settlement tanks. These tanks are used to settle sludge by allowing grease and oils to rise to the surface where they are skimmed off. A rotating bridge moves around the tank at a slow speed, to scrape off unwanted particles from the top of the water.
Sludge level measurement works by measuring the distance between the sludge blanket surface and the water level. Once the sludge has reached the required density, the accompanying controller will then switch on the pumps and pump the sludge into digestors, ready for the secondary treatment stage.
Secondary treatment is designed to degrade the biological content of the sewage, separating treated water from biomass, resettling the sludge, and sufficiently thickening it so that when the sludge is returned to the tank inlet, it can maintain the biomass concentration levels required.
The final stage of the sludge treatment process is the tertiary tanks for clarifiers, which further purify the discharge effluent. These tanks are used to remove the fine particles from the effluent – which usually will flow over a weir or down an open channel and eventually discharge back into local water sources.
Why measure Sludge Blanket level?
There are many advantages and benefits from monitoring sludge blanket level, including some significant capital saving costs and a reduction in carbon footprints.
Effective sludge level measurement can help treatment plants or industrial customers generate their own electricity. Many large sewage treatment works use the gas produced in digestors to drive turbines that generate electricity. The more gas produced, the more electricity that can be generated. One of the most important determinants of gas volume is the quality and density of the sludge that is being delivered to the digestors.
In addition, operators can ensure that sludge extraction pumps are used efficiently, and excess poorly settled sludge does not wash out into effluent paths. This can prevent costly over-spills and regulation breaches.
Environmental modelling has enjoyed a long tradition, but all models have powers and limitations that need to be continually assessed.
Modelling of Pollutants in Complex Environmental Systems includes Volumes I and II and showcases modern environmental modelling methods, the basic theory behind them and their incorporation into complex environmental investigations. It highlights advanced computing technologies and how they have led to unprecedented and adaptive modelling, simulation and decision-support tools to study complex environmental systems, and how they can be applied to current environmental concerns. With chapters contributed by global experts, the book covers different aspects of modelling air, water, soils and biological systems.
Volume ll presents an extended look at environmental modelling research, its applications and presents timely topics and applications of the study of environmental contaminants, with detailed discussions of mathematical concepts used. Five sections cover decision support and assessment modelling; aquatic modelling and uncertainty; soil, sediment and subsurface modelling and pollutant transport; forest ecosystem and footprint modelling; and air quality modelling and sensitivity analysis.
Both volumes are essential reading for researchers in academia, industry and government-related bodies who have a vested interest in all aspects of environmental modelling.
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P U L S A R M E A SU R EM EN T . C O M
Further sludge handling processes such as thickeners and dewatering equipment will all perform better when fed with a higher concentration of sludge. The diluted and lower concentration sludge will require increased dosing, heating costs of digestors, and increased pumping costs.
On top of plant and operation savings, it also enables operating companies to save on labor costs of manual sampling and means that there is a wealth of feedback instantly available, allowing for overall greater system control for plant managers and wastewater engineers worldwide!
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54387pr@reply-direct.com Excellence in flow & level measurement.
DETECTION Reliably measure primary, secondary, and tertiary interface levels in treatment and process applications
SLUDGE INTERFACE
• Self-cleaning and maintenance free • Automatic de-sludging
• Continuous blanket level output for compliance and efficiency
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