Kobold Instrumentation was tasked to provide a solution for the problem of phosphate precipitation in wastewater treatment plants.
By adding iron (III) chloride (FeCl3) into the aeration basin, the phosphates dissolved in excess wastewater are chemically mixed with sludge flocculants and transferred with sludge to the sludge treatment stage. This process reduces phosphate concentration in waterways and therefore minimises the potential for abnormal algae growth, and the detrimental effect to the aquatic eco-system. Because an overdose of iron (III) chloride results in massively polluted water – toxic to humans as well as the environment – a completely dependable method of process monitoring was sought. The ideal was a continuous flow measurement of the dosing chemical with a direct data connection to the process control system which would guarantee water treatment plant owners maximum safety; so that possible errors were not just discovered after the event when it is too late.
The solution on offer from Kobold is the MIK magnetic-inductive flowmeter, an optimal and economical solution for safe dosage of iron (III) chloride and specifically developed for this application. The unit has already proven itself successful in service, specifically for electric conductivity liquids, acids and caustic solutions, drinking, cooling and wastewater, ground water, raw water, aggressive or salty solutions, but is unsuitable for oil as it lacks conductivity.
The MIK is housed in Polyvinylidene Fluoride (PVDF) and the electrodes in contact with the medium are made of tantalum. Both materials have proven to be totally chemically resistant. Together with the direct mounted transmitter with stainless steel housing, this device forms a very compact yet robust unit, which is ideal for fitting inside cramped control cabinets. It allows detection of very small dosage amounts from 10 mL/min.
The device operates according to the principle of electromagnetic measurement and via an analogue 4-20 mA signal (or optional pulse output) the MIK continuously communicates the measured values to the users’ process control system. This results in increased efficiencies and cost savings in the amount of iron chloride required to achieve phosphate removal, as well as the vitally important environment protection component.
New uncompromisingly simple flowmeter line for processes Endress+Hauser South Africa
Flow Measurement & Control
The demand for simplicity in commissioning, operation and maintenance in industrial process plants has increased significantly in recent years. The new Proline 10 range of flowmeters from Endress+Hauser meets this requirement without compromise, because simplicity is the top priority.
Read more...Loop signature 29: Averaging or surge level control
Editor's Choice Flow Measurement & Control
There are many processes where it is undesirable for the load to suddenly change quickly, for example in the paper industry. Examples of level control have involved reasonably fast tuning. An example of a level loop tuned this way and responding to a step change in setpoint is given.
Read more...The critical role of temperature measurement in flame hardening Instrotech
Temperature Measurement
Flame hardening is a heat treatment process widely used on parts made from mild steels, alloy steels, medium carbon steels and cast iron. Accurate temperature measurement is not just important, but critical for the success of flame hardening.
Read more...Noncontact infrared temperature control in aluminium rolling process Instrotech
Temperature Measurement
The aluminium rolling process is critical to the aluminium manufacturing industry, where precise temperature measurement is essential for ensuring high-quality product output and protecting equipment. The Optris long-wavelength camera can accurately measure strip temperatures in cold rolling and coiling applications.
Read more...Uncompromising flow rate measurement Burkert South Africa
Flow Measurement & Control
Bürkert’s FLOWave is a hygienic and safe flow measurement solution with many benefits for pharmaceutical or food production processes.
Read more...ABB unveils next generation of electromagnetic flowmeters ABB South Africa
Flow Measurement & Control
ABB has launched its latest generation of electromagnetic flowmeters, bringing unmatched accuracy, connectivity and flexibility to industrial and utility applications.
Read more...Precision measurement for ultra-pure water systems
Flow Measurement & Control
[Sponsored] Ultra-pure water (UPW) is essential in industries where even minor contaminants can impact product quality and process integrity. Anton Paar’s L-Cor Coriolis mass flowmeters provide a highly accurate and hygienic solution by directly measuring the mass of the liquid using the Coriolis effect, ensuring a high level of cleanliness.
Read more...Rotary atomisers for efficient paint spraying Instrotech
Sensors & Transducers
Painting the bodywork is an integral component of vehicle manufacturing. Keller supplied intrinsically safe pressure transmitters and intrinsically safe temperature sensors to a client producing paint robots for the car industry.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version