12 Water / Wastewater
Titan’s Oval Gear Flowmeters Ideal for Metering Petrochemical Additives
Turning online water analysis into child’s play
Designing and developing a state-of-the-art water analyser presents many tough obstacles, one of them being that the instrument should be not only precise, but easy to use. In the picture you can see Supriya Jamwal, Seibold Wasser Analysatorenfabrik’s Business Development and Marketing Manager, putting the fi nal touches to her Lego model of Seibold’s top-of the-range ‘Wilhelm Kienzl’ Analyser for monitoring of arsenic in water.
For any instrument to deliver continuous, reliable and accurate data
..it is crucial that its operation should be simple. Simple machines to carry out complex measurements is an ideal that the development team at Seibold strive for.
The analyser is simple because it has only three parts: electronics, pumps and the photometer. The electronic aspect is failsafe, standard electronics to deliver information internally and externally. Internally the electronics drives the pumps, reads the
photometer and calculates measurement results; externally, it delivers information to the central PLC. The pumps are peristaltic hose pumps. Every liquid has its own dedicated stepper motor pump, eliminating the need for multi-folds or switches which increase the complexity of an instrument. Finally, the analyser includes a glass photometer where LED at specifi c wavelength reads the absorption of light beam caused by the relationship between the dye and the element we want to measure.
For the successful transportation and refi ning of crude oils, a whole raft of additives are required. These vary from simple surfactants through to complex blended scale and corrosion inhibitors. The chemical additives are injected in small quantities at high pressure and are critical to the whole refi ning process. Consequently, careful monitoring of their addition to any process is essential. Petrochemical additive injection fl uids vary in both viscosity and density, and any fl owmeter installed into a plant should be able to cope with a wide range of physical and chemical properties. Titan’s Oval Gear range of fl owmeters, with standard models in 316 stainless steel, aluminium, and PEEK materials, and pressure ratings from 50 bar to 700 bar, offer excellent chemical resistance whilst maintaining high performance and 0.1% repeatability. For hazardous areas either the Namur sensor or the reed switch (simple apparatus) may be used. For OEM specifi c application, alternative features are available with material, mounting and high-pressure options.
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58277pr@reply-direct.com Digitisation of temperature measurement holds the key to optimising composting plants
The waste and recycling industry is facing a fundamental transformation. Large companies are more likely to be prepared for the digital transformation. However, 95% of the world’s composting plants have fewer than 10 employees and correspondingly few resources. This is exactly where sense4elements GmbH compocheck24 comes in and wants to lay the foundation for the digitisation of composting plants.
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No one would have to reinvent the necessary technologies. What stands in the way of the completely digitised and networked temperature monitoring process on composting plants? It’s not just about digital tools, but about rethinking at all levels in the direction of “structures, working methods and attitudes”.
The general waste industry has some catching up to do, because as long as plans on paper and all sorts of paperwork are used, the susceptibility to errors is high and the effi ciency rather low. Between the offi ce and the compost rental, the information circulates sometimes more, sometimes less fl uently. Time delays, misunderstandings and discrepancies are the result. Productivity suffers as a result. Over the past 10 years, progress in waste management has increased by 3 percent. By comparison, the manufacturing sector by 38 percent and the manufacturing industry by 32 percent.
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Composting plant operators need a tool that facilitates and signifi cantly reduces the ongoing effort of material monitoring. Especially at the beginning of composting, high temperatures are desired and necessary for the decomposition process. Temperatures between 60°C and 70°C are considered ideal, as they cause harmful organisms to die, among other things. However, higher temperatures than 70°C are not desired, as this also kills those organisms that are needed for fertilization.
In the processing and production of biological fertilizer, the temperature factor plays a very important role in terms of hygienic treatment of waste materials and high-qualityand sustainable quality.
Organic residues of animal or plant nature from municipalities, waste disposal and agricultural enterprises, road maintenance companies, etc. usually contain the following ingredients: green waste, vegetable waste, feed residues, cow and pig manure, shrub and grass clippings, garden and kitchen waste and the contents of the organic bin. All this waste is sorted in composting plants and mixed in a targeted manner so that natural rotting by microorganisms can take place. Through the process of composting, especially during hygenization, pathogenic microorganisms and molds are killed, as well as weed seeds lose their germination capacity.
Optimal composting goes through 3 essential phases: phase 1 is fermentation, where the temperature rises to approximately 40°C – which results in what is known as ‘pre-rotting‘, this is followed by phase 2, which is hygenisation, where the temperature rises to 65°C – this is known as ‘hot rotting‘ and fi nally phase 3 where thematerial is cut, can rest and high-quality biological fertilizer is produced.
Special attention is paid to hot rotting, as it is used for hygiene and must be monitored continuously. In order to ensure the necessary oxygen exchange or oxygen enrichment, the compost material is regularly turned or converted during controlled rotting. On average every 3 days.
For proof of hygiene, the temperature of the rot must be documented at least once a day, in accordance with the Biowaste Ordinance (BioAbfVO). In hot rotting, hygenisation requires a temperature of over 55°C preferably for 2 weeks or 65°C over 1 week.
Furthermore, the rental temperature should not exceed 65° C over a longer period of time in order to avoid unwanted charring, especially since spontaneous combustion can occur at temperatures above 75°C. In contrast, a temperature below 15°C slows down the activity of microorganisms, so rotting takes longer.
Temperature is therefore the most meaningful measurement parameter for any composter. New material mixtures, material development after irrigation, current rotting condition, etc. can be evaluated very well by having a clear picture of temperature development. In addition, the legislator provides for a recording of the temperature as proof of hygienisation.
The automated measuring system from compocheck24 works in all conceivable weather conditions and outside temperatures and continuously monitors the core temperatures of various waste and compostmaterials. The temperature measured values are automatically transmitted directly to the compoAPP per probe via mobile network, without an external power supply or any components in between.
Problems in composting, e.B. due to unintentional rise or fall in temperature, are immediately detected by means of the measuring system and immediately signalled by means of the compoAPP. This in turn makes it possible to intervene quickly and purposefully. This saves time and, above all, minimizes unnecessary stress factors. For More Info, email:
58239pr@reply-direct.com IET ANNUAL BUYERS’ GUIDE 2022/23 email: For More Info, email: email:
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The Model 615 ML Multilevel Drive-Point Piezometer system from Solinst can provide several monitoring zones in one drive location. The 615 ML Ports have a dual barbed stem that allows the connection of either 3/8” OD or 1/4” OD tubing to create up to 3 or 6 monitoring zones, respectively. Solinst supplies 3/4” (20 mm) NPT caps, and stainless-steel couplings and extensions.
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Solinst Drive-Point Piezometers can be driven into the ground with any direct push or drilling technology, including the Manual Slide Hammer. The 21lb (9.5Kg) slide hammer and all other equipment can easily be transported in a car or truck to most sites. Multilevel Drive-Point Piezometers are ideal as low cost, minimal disturbance tools for initial site investigations. They are a simple, inexpensive and effective option to create multiple monitoring points in one shallow installation.
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Multilevel drive-point piezometer provides high resolution groundwater data
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