42 Water / Wastewater


Measuring total organic carbon levels to comply with wastewater treatment environmental regulations


Engineers in municipal wastewater plants who recognise that knowing their process’ total organic carbon (TOC) levels is important to achieve the most effi cient treatment will fi nd the advanced Total Organic Carbon (TOC) Analyser from Electro-Chemical Devices (ECD) helps them measure carbon levels more accurately to ensure post-treatment effl uent will meet international, national, state and local water environmental regulations.


With its UV persulfate non-dispersive infrared (NDIR) detection technology, ECD’s TOC Analyser helps plant engineers and technicians know with confi dence that their wastewater treatment process is effective, cost-effi cient and that the job is complete. The ECD TOC Analyser is also


suitable for monitoring stormwater and other types of industrial water-based waste streams or for water re-use treatment applications


Organic matter is generally present at various levels in surface water, groundwater, municipal wastewater and industrial wastewater. Knowing the correct TOC level is especially important for effectively treating municipal wastewater and stormwater fl ows prior to plant effl uent release in order to prevent the downstream contamination of ponds, rivers, lakes and the ocean where sensitive wildlife including plants, fi sh and other aquatic creatures are present.


A full-featured sophisticated instrument, the ECD TOC Analyser utilises the UV persulphate oxidation sensing method, which detects generated carbon dioxide (CO2


) using its highly stable NDIR detector


for analysis. This method and the analyser conform to: US EPA, DIN, CE, ASTM and NAMUR regulations, as well as ISO.


The simple-to-use ECD TOC Analyser fi rst acidifi es a water sample and then sparges it to remove inorganic carbon. The remaining liquid is mixed with sodium persulfate and digested by two high-performance reactors. The resulting CO2


is then stripped from the liquid and, after drying, its


concentration is measured by the NDIR analyser. The analyser measures TOC levels ranging from 0-5 mg/L to 20,000 mg/L.


ECD’s TOC Analyser features a unique design that includes a valve-free sample line, which largely eliminates blockages to help assure nearly continuous operation. The analyser’s auto clean, auto- calibration and auto-validation functions guarantee correct, reliable values that can be reproduced at any time without the need for manual intervention.


In comparison to conventional analysers where the fl ow is controlled by a glass tube rotameter, the carrier gas fl ow with the ECD TOC Analyser is controlled digitally. The fl ow is monitored via built-in smart diagnostics and if an abnormal value is detected, the analyser stops automatically and displays a warning alert.


Developed for rugged, demanding plant environments, the ECD TOC Analyser is housed in a dual- compartment enclosure. The isolated water sample components are in one compartment, and the electronics are located in a second compartment for safety and highly reliable operation. The analyser compartment is rated IP54, NEMA 3, and conforms to EN610004-2, EN610004-4, C46-022, EN 55022 and EN 61326.


This analyser can be quickly installed and is intuitive to use, the intelligent TOC Analyzer features a user touchscreen display located on the front of the analyser. All output/input data, status information, alarms and fault conditions are shown on the display. Simply pressing the touchscreen buttons provides access to commands and settings. The system is password-protected for security.


TOCs in wastewater are regulated by a plethora of international, national and and local water quality standards. Many other industries rely on TOC measurement for analysis of wastewater prior to discharge. In addition, the power generation industries rely on TOC measurements for water quality concerning cooling water, condensate and boiler-feed water.


For More Info, email: email:


For More Info, email: email:


For More Info, email: email:


61320pr@reply-direct.com Water quality analysis -


a challenge for spectroscopy technologies Traditional methods for assessing water quality parameters include chemical, biological, and physical approaches. While chemical methods require bulky and expensive equipment and a large number of reagents, biological methods suffer from lower accuracy and sensitivity.


Physical methods, on the other hand, include spectral remote sensing technology in the UV and visible wavelengths, such as UV-Vis spectrophotometry, which is increasingly utilised for rapid water quality assessment.


There are two types of spectral sensors used in water analysis: single-wavelength (SW) sensors and spectrophotometers. SW sensors generally consist of a bandpass-fi ltered single photodetector and a light source that emits in the targeted wavelength and is absorbed by the substance to be detected. Spectrophotometers use a broadband light source, a diffractive grating that separates light into its wavelengths components and directs it towards a linear array photodetector.


Generally, when comparing the performance of full-spectrum and SW sensors, the latter can measure parameter variations during certain periods but may not compensate for the particle effect accurately, specifi cally when comparing the results with the standard laboratory procedures and measurements. Spectrophotometers, however, provide better particle compensation and can be calibrated to specifi c locations with higher accuracy. They are better for precise applications, such as real-time water and treatment process monitoring.


When using a UV-Vis spectral or full-spectrum sensor, it is crucial to choose the most suitable broadband light source. The light source needs a suitable spectrum, brightness, reliability, short to no warm-up time, long lifetime, low power consumption and compactness.


Although LEDs are widely used in many applications, they are not as useful in UV-Vis spectrophotometry due to their narrow-spectrum light and limited available wavelengths. Instead, broadband emitters like Deuterium Lamps and Xenon Flash Lamps are preferred.


Deuterium Lamps have a limited emission spectrum and require long warmups but are preferred for lab-based benchtop devices due to lower peak-to-peak variation. Xenon Flash Lamps offer a wider wavelength range, allowing for the detection of a higher number of water parameters to be detected simultaneously.


Using their unique know-how in vacuum device fabrication and electronics integration, Hamamatsu Photonics developed the most advanced Xenon Flash Lamps for UV-Vis-NIR portable spectrophotometry and online water monitoring.


These devices are available as stand-alone emitters or modules with an integrated trigger socket and power supply for easy integration. Hamamatsu’s Xenon Flash lamps feature instantaneous high peak output, a compact design, low heat generation, and a continuous emission spectrum from 160 nm up to mid-infrared wavelengths making it the ideal light source for miniaturised instruments. These lamps have a guaranteed lifetime of 10 billion fl ashes and offer output powers spanning from 2 W up to 60 W.


New fl owmeters off er faster and more reliable


For More Info, email: email:


For More Info, email: email:


Profi Net is a protocol utilised in the fi eld of Operational Technology (OT) that operates at the application layer. Incorporating Profi Net into ABB’s CoriolisMaster and ProcessMaster fl owmeters enables seamless and real-time exchange of data, and monitoring of alarms and diagnostics. It also allows for diverse confi gurations to ensure reliable and effi cient communication between the fl owmeters and across both local area and wide area networks (LAN & WAN).


For More Info, email: email:


“Remote monitoring and control are becoming increasingly important in many industries,” said Harald Grothey, Global Product Manager at ABB. “Profi Net’s high-speed communication capabilities with fast and reliable data transmission mean remote operators can make informed decisions in real-time, reducing the need to travel for on-site support. We are always looking for ways to help our customers become more effi cient. By reducing the need for separate cabling, the new CoriolisMaster and ProcessMaster fl owmeters are a stepping stone to a more resource-effi cient future.” ABB’s CoriolisMaster and ProcessMaster with Profi Net ensure reliable data transmission by providing a stable and consistent power supply. This helps to reduce the risk of data transmission errors caused by power fl uctuations or interruptions and ensures that the data received by the control system is accurate and reliable. Transmitted in real time, information on fl ow rates and densities is always up-to- date. The easy-to-access built-in webserver minimises time spent for set-up and parameterisation of the fl owmeters signifi cantly. Users get access to all parameters, such as measurement range, units, IO confi guration, verifi cation and diagnostic settings as well as a data-logging function. With this, a reduced overall commissioning and engineering time results in additional cost savings.


More information online: ilmt.co/PL/ymYY For More Info, email:


IET NOVEMBER / DECEMBER 2023 email: For More Info, email: 61323pr@reply-direct.com


data transmission for process industries ABB has launched CoriolisMaster and ProcessMaster fl owmeters that can be powered over the same ethernet cable used for data transmission, eliminating the need for separate cabling. The new feature reduces installation time and cost, and increases the speed and reliability of data transmission. One of the key challenges facing customers in process industries is the need to reduce the complexity and cost of installation and operations of fi eld instruments, infrastructure and systems. The new ABB CoriolisMaster and ProcessMaster fl owmeters featuring Profi Net with Power Over Ethernet address this challenge by providing a single-cable solution.


60750pr@reply-direct.com


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56