Water / Wastewater Treatment
Ultrasonic Level Transmitter Offers Level Measurement up to 10-metres Across Complex Tank Shapes
Burkert’s (UK) Ultrasonic Level Transmitter Type 8175 provides continuous level measurement at distances up to 10-metres. Integrating an ultrasonic sensor and a transducer with a large 8-digit multi-language display in a splash-proof IP65 or immersion-proof IP67 housing, the Type 8175 offers users a teach-In function for easy commissioning, and also delivers low total cost of ownership.
Designed for use in water treatment, the 8175 is a non-contact filling level transmitter that can be used in both open and closed vessels. Simple to use, with its menu-guided operation and 8- digit alphanumeric display, the Type 8175 delivers fast and easy commissioning with its integrated “Teach-
In” and “Simulation” functions. These allow different tank shapes (cylindrical, cubic, spherical) to be easily programmed via fixed default shapes, or at complex tank shapes step- by- step. Importantly, the simulation functions allow the system to be tested under dry-run conditions, and the resulting measured value can be shown as a level, a distance (in cm, m, inch or feet), or direct, as a volume (litre, m3, Imp. gal or US gal).
Underpinning its reliability in continuous process environments, the Type 8175 integrates a range of fail-safe features, including signal loss, power supply failure, and level or temperature alarms, which can be activated with an adjustable time delay. In addition, a range of filter functions control the return echoes and automatically eliminate all interference due to elements of the vessel.
The 8175 transmitter is powered with 18-32 VDC (optionally 115/230 VAC) and features a three-wire 4-20 mA output for direct control of a continuous control valve, interface to a PLC, or for monitoring. Two optional 3A relays can be also configured as alarms or latched for automatic fill or empty operations.
Burkert offers the 8175 Ultrasonic Level Transmitter together with process control valves as a complete, easy to control system. The transmitter can be used with Burkert Type 6213 solenoid valves, Type 2030 diaphragm valves, Type 2712 continuous TopControl System, Burkert 8644 valve islands and third party vendor PLCs in one totally integrated, easy to commission system.
Ultrafiltration System Helps Recycle and Reuse Oily Wastewater Reader Reply Card No 18
Koch Membrane Systems (USA) is helping companies reduce and reuse wastewater via KONSOLIDATOR™ ultrafiltration systems, according to Peter Bouchard, the company’s global director of marketing.
“Our products offer manufacturers an outstanding way to reduce wastewater discharge,” Bouchard said. “The KONSOLIDATOR UF systems are inexpensive to install and easy to operate and maintain. The systems operate at maximum suspended solids concentrations without plugging minimising pre-filtration requirements and allowing companies to concentrate waste volume. KMS has sold hundreds of these systems over the years and has seen a significant increase in companies looking to reduce their wastewater footprint and overall disposal costs.”
The KONSOLIDATOR systems are designed for companies looking to reduce disposal wastewater costs in applications with high suspended solids. The durable membranes can handle a variety of processing conditions and can be cleaned easily using KMS’ sponge balls.
Fabricated from cost-effective, dependable components, the KONSOLIDATOR features KMS’ patented FEG™ tubular membranes, which exhibit outstanding performance, with mechanical and chemical resistance properties that make it the preferred membrane configuration in tough situations. The KONSOLIDATOR ultrafiltration systems are available in five standard sizes ranging in flows from 3,000 to 100,000 gallons per day.
Additional features include a control panel containing a programmable logic controller, a NEMA 12 enclosure, as well as pressure and temperature alarms, feed temperature and permeate flow indicators, inlet/outlet pressure gauges, optional cleaning skid, and an automatic purge mechanism.
Reader Reply Card No 19
Cavity Pumps Provide the Solution at Sewage Works Three revolutionary maintain-in-place EZstripTM
NOV® Mono®
progressing cavity (PC) pumps from (UK) have been installed at Dŵr Cymru Welsh Water’s sewage treatment
works (STW) in Ruthin, Wales to improve process efficiency by reducing maintenance downtime at the site.
Commissioned by Imtech Process Ltd, one of the NOV Mono EZstripTM pumps has
been installed as a thickened sludge transfer pump to transfer sewage sludge from the on-site thickener process to consolidation tanks, where the thickened sludge is then combined with imported sludges. The sludges are then macerated by inline Mono Munchers prior to being fed into the digester by the other two NOV Mono EZstripTM pumps in a duty/standby configuration.
David Kelly, Project Engineer with Imtech Process Ltd., commented: “We were experiencing problems with the existing pumps which would regularly block up and therefore require a complete overhaul every six months. Due to the restricted space, maintenance of the existing pumps was proving difficult and removal of the rotor and stator in situ was practically impossible.
To provide a solution, three Mono EZstripTM The NOV Mono EZstripTM maintenance cost and downtime.”
Pamela Moore, who worked on the project as Imtech’s Mechanical Design Engineer, added “The new pumps have provided us with a robust and reliable solution, and we are very happy with their performance. The NOV Mono sales and engineering departments have also been very supportive and willing to offer help and advice whenever required.”
NOV’s Mono EZstripTM C Range. The EZstripTM progressing cavity pump is the biggest leap forward in PC pump design for 30 years and is an extension of Mono’s popular Compact
has been specifically designed to provide a quick and easy way to disassemble, de-rag and maintain a PC pump in-situ without the need to dismantle any pipe work from the pump, minimising the costly maintenance and down time that servicing can often cause.
The chamber of the EZstripTM pump has a two piece design which can typically be opened in less than one minute, the suction chamber and rotating parts
de-ragged and the chamber reassembled with a spanner and an Allen key. The whole operation can take less than two and a half minutes (depending on the severity of the rag blockage).
The EZstrip™ pump can be installed into new plants or retrofitted into existing NOV Mono Compact C installations. No electrical disconnection is required and suction and discharge pipes remain untouched. The model range has a capacity of up to 165m3
or stainless steel. A choice of rotor and stator materials are available, including WRAS compliant elastomers and a pre-assembled drive train, with two year warranty.
Reader Reply Card No 20 Reader Reply Card No 21 /h and 12 bar pressure, and is available in either cast iron pumps were installed onto the duty. pump design allowed quick and easy in-situ inspection or replacement of the rotor and stator and resulted in a reduction in both
www.pollutionsolutions-online.com • February / March 2011
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