TREATING AND ANALYZING WATER
ENGINEERING - EQUIPMENT - SERVICES
On-line monitoring
- exclusive Romanian distributor of Process Instruments LTD products -
The analyzers of PROCESS INSTRUMENTS, GRUNDFOS, B&C include high precision sensors for immersion or pipe insertion. Process control in areas such as water treatment, environmental parameters monitoring, food and beverage production, wastewater treatment can only be achieved through on-line monitoring.
The list of targeted parameters includes: turbidity, suspended solids, disinfectants (Cl2, ClO2, O3, I2, Br2, PAA), conductivity, dissolved oxygen, temperature, hardness, alkalinity, acidity, silica, chloride, salinity, phosphate, ammonium, nitrate, nitrite, iron, hydrazine, pH, redox potential (ORP), CCO-Cr, total organic carbon (TOC), pressure, gases, level, flow, etc.
The controllers of the measurement systems are designed in such a way that one or more sensors can be connected to them. Outside of the monitoring function, the on-line analyzers operate as local automation loops using limit value settings, proportional control, PID or continuous control. They provide direct control for various execution elements (pumps, solenoid valves, etc.) by means of an analog signal or the limit and alarm relays. Also, through the digital interface, the online analyzers allow their integration into SCADA-type dispatching systems.
Via their digital interface on-line analyzers can be integrated into SCADA control systems. In field applications access to analyzer menus is possible via GSM modem, both for downloading data, for diagnostic or for modifying settings.
OIL IN WATER AND THM ANALYZERS
- exclusive Romanian distributor of Multisensor Systems LTD products -
The range of analyzers from MULTISENSOR SYSTEMS, UK comprises Volatile Hydrocarbon (VOC) analyzers in water for industry-specific concentrations and a trihalomethanes (THM) analyzer.
The MS1200 Oil in Water and Pollution Analyzer is designed to protect drinking water treatment facilities in the event of pollution events right from the raw water intake. Such events can lead to breakdowns requiring expensive filter replacement or cleaning, and can also affect the quality of drinking water produced. In addition, the system can be used for a wide range of applications such as surface water, groundwater and industrial water monitoring.
Increasingly restrictive regulations requiring the monitoring of disinfection byproducts (DBP) have given birth to the MS2000 total water THM analyzer. Most known trihalomethanes are currently being investigated for their carcinogenicity, while countless molecules in the category have already been shown to be harmful. MS2000 thus protects the consumer from potential long-term harmful effects from possible irregularities in the chlorine disinfection process.
Multisensor Systems sensors use a non-contact measurement technique called Electronic Nose, detecting gases in the space above the liquid, thus being unaffected by water turbidity and having very low maintenance costs. The instrument is accurate at low concentrations (ppb) for a wide range of compounds including petroleum products (BTEX), polycyclic aromatic hydrocarbons, volatile organic compounds.
Some applications: monitoring of water catchment points, monitoring of drain and stormwater systems for flammable liquid contamination, detection of volatile organic compounds or VOCs in industrial wastewater (MS1900), detection of fuel pollution in surface waters, detection of penetration of carbon filters by volatile organic compounds (MS1700), protection of reverse osmosis membranes, protection of desalination plants, monitoring of cleanup efforts after pollution events.
SOMMER flowmeters for sewage are suitable for installation in any kind of canal or in gravity flow underground pipe.
Among the most frequent uses are the metering of waste water quantities, both when discharging into natural receivers and for the accurate taxation of industrial users. The monitoring and management of communal sewage systems finds a useful tool in the sewage flow meter, especially in cases where domestic, industrial and rainwater are collected in common canals. The monitoring of water quantities in hydropower units, or in irrigation are other uses of great importance, especially in strict management conditions, imposed for example during drought.
The principle of operation allows for a simple formula for expressing flow:
FLOW = AREA x SPEED
Level measurement is achieved by means of an ultrasonic or radar sensor, whereas velocity measurement is done by a Radar fixed above the channel. The velocity Radar "scans" the wetted section of the channel calculating an average velocity. The continuous measuring of velocity eliminates the need for primary transducer used in traditional systems as a hydraulic resistance (overflow weir , Parshall or Venturi channel, etc.), thus no construction work is necessary.
SMART STORM automatic water samplers are designed to meet the sampling needs of analytical laboratories and control bodies in the field of water quality and environmental protection.
The construction of the samplers takes into account several very important aspects:
– ensuring a representative sample depends, among other things, on the sampling frequency chosen so as to ensure the possibility of obtaining the most accurate image of the evolution of water quality over time,
– the place and depth chosen for sampling are also extremely important.
These machines are microprocessor controlled and operate based on sampling programs. Average samples can be collected over a given time interval, or instantaneous samples with adjustable sampling quantities and intervals.
Sampling proportional to the flow rate can also be achieved by connecting to the signal of an external flow meter.
Different configurations are possible with containers with different volumes, with one, two, four or eight flasks.
SMART STORM fixed and portable samplers can be placed anywhere thanks to high-performance construction materials, which are rated for the temperature range -25....+40°C. In the insulated interior chamber, they always maintain a temperature of 4°C through a thermoregulation system (heating and cooling) controlled by the microprocessor.
