Technology Round-up

New open channel flow meter from Badger Meter

Badger Meter has introduced the Dynasonics® iSonic 4000 flow meter for a wide range of open channel flow measurement applications. The new flow meter accurately measures level, flow rate, and total volume of water and other liquids flowing through weirs and flumes. The device is well suited for applications ranging from flow into water treatment plants, storm and sanitary sewer systems, and effluent from water resource recovery, to industrial discharge and irrigation channels. It employs a non-contact ultrasonic level sensor to measure the water level in a flume, weir or other channel. The unit is programmed using three front panel push buttons, with the programming menu offering a wide variety of primary flow elements. The iSonic 4000 open channel flow meter easily interfaces with most supervisory control and data acquisition (SCADA) systems. Simple to install and setup, it sends level, flow rate and total volume information over Modbus RTU. A robust data-logging feature with selectable intervals provides a backup of measurements in case of network outages or reporting lapses. Typical applications for the iSonic 4000 are found in industries such as wastewater effluent, storm water systems, agriculture irrigation, and general process and industrial discharge. www.badgermeter.com

Contactless flow metering

The new mobile NivuFlow Mobile 600 flow transmitter has been developed particularly for long-term measurements in full pipelines. Very high endurance is achieved thanks to energy-efficient algorithms, performance-optimised sensors and high-capacity rechargeable batteries. Utilising a five-minute-cycle for measuring and recording, it is possible to measure up to one year without battery replacement. Featuring 182.000 storage cycles, the internal data memory is conceived for even longer measurement periods. Contactless clamp-on sensors and pipe sensors for direct measurement in the medium are available. Both sensor types share quick and easy mounting without the need to shut down running processes. The clamp-on sensors do not have any medium contact and are clamped onto the pipe outside. Thanks to the high protection rating of sensors and transmitter (IP68) it is possible to operate the measurement system even under harsh ambient conditions. For example, batteries can be replaced by the operator even during heavy rain. This ensures uninterrupted measurements even for long-term projects. The transmitter is controlled on site by using smart terminal devices such as smartphones, tablets or notebooks. Connection is set up using a WLAN created by the transmitter itself. No plug-ins or apps need to be installed to operate the system. During poor weather conditions, in strong sunlight or in case of limited access to the measurement site it is hence possible to operate the instrument from protected areas such as service vehicles etc. Typical NivuFlow Mobile 600 applications are: leakage detection, heat quantity measurement, pump verification, water supply monitoring, monitoring of inlets and outlets conducting cooling water or circulation systems as well as monitoring of process water and service water. www.nivus.com

LANXESS adds CCRO module to design software

LANXESS Sybron Chemicals, a subsidiary of specialty chemicals company LANXESS, has announced a significant addition to its LewaPlus® software suite of reverse osmosis (RO) and ion exchange (IX) system dimensioning capabilities. The new module provides system modeling with Desalitech’s Closed Circuit Reverse Osmosis (CCRO) technology and enables the dimensioning of RO systems using the latest available water treatment technology, helping system designers bring their water treatment footprint closer to zero liquid discharge (ZLD) or minimum liquid discharge (MLD) goals. The system operates in two alternating modes: Closed Circuit (CC) mode at 100 percent recovery and Plug Flow (PF), or flushing mode, at 10 percent to 50 percent recovery. During CC operation, permeate is produced at a rate equal to the flow rate from the high-pressure pump. When a desired recovery percentage is reached, the operating mode is switched to PF mode in which concentrated brine is purged from the system and displaced by feed water from the high-pressure pump in a single plug-flow sweep. The new software module was developed cooperatively by LANXESS Sybron Chemicals and Desalitech, Inc. (Newton, MA, USA). Until now, the modeling of the CCRO process was based on experience values without energetic optimization, which generally limited CCRO projections for recovery rates and system capabilities. https://lanxess.com

Geopolymer passes corrosion resistance test

Quadex’s GeoKrete Geopolymer meets the most demanding European test standard for corrosion resistance, WXX4, as defined by DIN 19573: Mortar for Construction and Rehabilitation of Drains and Sewers Outside Buildings. This test was created by the Hamburg Society for urban drainage to ensure mineral based repair and renovation products meet a minimum standard of resistance for biogenic acid corrosion. In order to comply with DIN 19573, in all testing phases, GeoKrete possessed a relative residual compressive strength greater than 55 percent for pH0, and greater than 75 percent for pH1. GeoKrete is used for the repair and rehabilitation of manholes, large diameter pipes and other sewer infrastructure requiring exceptional structural and corrosion protection. www.quadexonline.com

Track corrosion source with new H2S sensor

A new sensor from Unisense measures hydrogen sulphide (H2S) dissolved in wastewater. This enables utilities and consultants to find the root cause of hydrogen sulphide odour problems in sewer networks, which makes odour mitigation faster and saves significant cost for chemicals.

The new sensor from Unisense is the first industry grade sensor available that measures directly in the liquid-phase of the sewer without any pre-treatment. This enables precise and cost-effective root-cause analysis of sulphide problems leading to more effective mitigation initiatives. The new sensor from Unisense makes it possible to measure instantly and directly in the wastewater. Communicating with computers and SCADA systems, the sensor is a key tool in preventing over treatment. www.unisense.com

H&T Greensand Plus Filtration Media

GreensandPlus filter media removes Iron, Maganese, Arsenic, H2S, and Radium from water. The media is not too course to provide better filtration (trapping) than course medias; not too fine to provide excellent filtration capacity without high differential pressure; not too heavy to minimise backflow rates and finally not too light, so no media loss during backwash. www.inversand.com