Water/Wastewater 17 New Stationary Sampler For Liquid Media
The Liquistation CSF48 automatic stationary sampler from Endress+Hauser (Germany) takes liquid samples from process streams, stores them in plastic or glass bottles for sample preservation and later analysis, and can perform up to two on-line analyses at the measuring point. Using Endress+Hauser’s Memosens sensors, measurements available include nitrates, conductivity, oxygen, pH or ORP, and turbidity. Other sensors are available on a custom basis. The sensors have 4-20mA outputs.
The Liquistation CSF48 can serve as a stationary sampler for fully automated removal and temperature-controlled storage of liquid media. It can also be configured with sensors for use as a measuring station in municipal and industrial sewage treatment plants, laboratories and water conservancy boards, or industrial processes.
An integrated data logger records analyser values, temperature of the samples, time of sampling, etc. The operator interface has an LCD display, menu-guided operations, four operating keys, Field Data Manager software, and an interface to a PC for transmitting digital data. The system has two digital inputs, two analog inputs, two analog outputs, a cleaning function and an alarm relay. Add-on modules allow the Liquistation to be upgraded from one channel to multichannel measurements.
Sampling is accomplished with a vacuum or peristaltic pump, and the CSF48’s controller distributes the sample to the appropriate bottle. Sample bottles are kept in temperature- controlled storage, in a two-door housing for reliable temperature regulation. Dual-bottle trays make it easy to retrieve, replace and transport samples to the lab. Bottles are available in sizes from 1 liter to 30 liters, in plastic or glass. All parts that transport liquid (distribution arm, dosing system, distribution plate etc.) can be removed and cleaned easily without the need for additional tools.
Using the operator interface or the PC, a user can set up sampling procedures ranging from simple timed programs to event-driven programs. Up to 24 sampling programs can be active simultaneously. Sampling control can be in proportion to time, volume or flow. A sampling table makes it possible for users to program the bottle assignment, time interval and sample volume. Signals for external control can be connected via the two analog inputs and two digital inputs in the standard version of the product.
Conductivity or capacitance sensors, depending on the process liquid, are used to detect levels when dosing the samples. Multiple sensors also detect fouling and sensor failure, thus preventing pump failure. Self-learning software guarantees that the sample volume remains constant, so the user does not have to enter suction height or suction line length.
Reader Reply Card no 50 TOC Analyses Difficult Industrial Water Samples
Expanding GE’s capabilities for process, environmental and wastewater analysis, the Sievers InnovOx On-Line Total Organic Carbon (TOC) Analyser will allow users to analyse challenging water samples on a routine basis without requiring excessive preventive maintenance. Monitoring the levels of TOC in the water is an important step for industrial users to control processes that are critical to their operations and to comply with regulations.
The Sievers InnovOx offers increased uptime and instrument reliability, two important features when it comes to analysing difficult industrial samples. It has been designed by GE Power & Water’s analytical instruments unit (
www.geinstruments.com) for the petrochemical, petroleum, pulp and paper and food and beverage markets, as well as environmental organisations and municipalities.
The InnovOx On-Line, like its InnovOx Laboratory model predecessor, uses an innovative Supercritical Water Oxidation (SCWO) technique that offers enhanced
reliability, greater ease of use and lower maintenance than other TOC analysers available today. By utilizing SCWO, the InnovOx is the TOC instrument most capable of cost effectively analysing difficult industrial process, environmental and wastewater samples on a routine basis.
SCWO has historically been used to treat large volumes of aqueous waste streams, sludges and contaminated soils. GE is the first company to use this technique in a commercially available TOC analyser.
The first commercial application for the new InnovOx On-Line TOC Analyser is monitoring seawater in Taiwan. The seawater, which contains about 3 percent sodium chloride, is used as industrial process water, and both incoming and outgoing water streams need to be monitored for environmental protection. One of the main sources of contamination can be hydrocarbons coming from a petrochemical refining process. The InnovOx’s robust handling of the brine sample was a significant factor in the analyzer’s selection.
“The TOC market demanded technology with greater reliability and uptime, two critical needs that were not being met,” said Stephen Poirier, vice president of business development for the analytical instruments unit of GE Power & Water. “Our patent- pending InnovOx technology offers increased uptime and instrument reliability and handles tough samples easily.”
Reader Reply Card no 51 Rapid Detection of Organic Pollutants
Naturally occurring and human-influenced pollution incidents often lead to an increase in harmful levels of organic material in surface and ground waters. This creates a significant threat to potable water quality as well as to the equipment used in treatment plants dependant on these sources. AstraGuard rapidly and continuously measures the UV absorbance of water and gives an instant indication of organic pollution, much faster than
other methods, such as TOC and COD, which were primarily developed for laboratory analyses. With no moving parts and a sealed optical system AstraGuard from AstraNet (UK) requires little maintenance and has been proven as an intake protection device at many locations in the UK.
Along with organics AstraGuard can monitor colour and turbidity as well, enabling waste and effluent to be checked for discharge compliance. Enhanced sensitivity is offered by the long path-length flow cell that is linked to the instrument by fibre-optic cables; enabling flexibility in location and ease of access to all parts of the system. Stand alone logging or automatic control through SCADA/PLC systems is supported.
Reader Reply Card no 52 Tintometer® -Group BOD Measurement System
Direct sample selection
Interface RS 232
Accurate and direct display of BOD values in mg/l
BOD5 , BOD7 , OECD
Measuring period 1 to 28 days
Mercury free, environmentally- friendly
Tintometer GmbH - Lovibond®
Water Testing - Germany -
www.tintometer.com Reader Reply Card no 53
August/September 2010
AET
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