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Our Equipment Water Quality Monitors Peracetic Acid
The ORAKEL peracetic acid sensor is a membrane device which use no reagents. It is extremely stable and has a reduced maintenance and reduced whole life costs.
With its reduced maintenance, reduced calibration and reduced spares requirements, the ORAKEL peracetic acid sensor is arguably the most cost effective peracetic acid analyser available.
In most situations, the ORAKEL paracetic acid analyser is able to control the dosing of CHз,COзH. It does this by adjusting flow rates, pump rates, or valve positions automatically to maintain the peracetic acid setpoint. Automatic dosing can significantly reduce reagent costs, and increase the level of control.
Peracetic Acid is a powerful oxidant with an oxidation potential, used as a measure of disinfection effectiveness, greater than that of common disinfectants such as chlorine and chlorine dioxide. It is produced by the reaction between acetic acid and hydrogen peroxide when dissolved in water, and degrades over time forming non-toxic water soluble products. The free radical degradants (bug killing species); hydrogen peroxyl and hydroxyl have high oxidising capacities and are generally believed to destroy bacteria via the protoplasmic oxidation mechanism resulting in bacterial cell wall disintegration. The safe degradation pathway and high oxidation properties make paracetic acid a popular disinfectant for many applications and industries.
Chlorination of water can be achieved using three chemical mediums; chlorine gas, calcium hypochlorite and sodium hypochlorite, all of which have proved useful in many applications.
There are, however, several factors which affect their viability and all three mediums have safety concerns which must be addressed, including; potential gas release, corrosive properties and stability under heat and sunlight. As a result of this, sites often spend considerable amounts of time and money implementing safety precautions such as the safe generation and storage of these chemicals.
Furthermore, chlorine reacts with natural organic compounds found in the water supply forming potentially harmful disinfectant by-products such as Trihalomethanes (THMs) and Haloacetic acids (HAAs). The potential health hazards associated with exposure to these by-products, particularly THMs, have resulted in extensive drinking water regulations across the developed world with a stipulation on regular monitoring of these compounds across the water distribution system. As paracetic acid usage only results in non-toxic degredants, no further costs are incurred on instrumentation to monitor potentially harmful residuals or by-products.
Although peracetic acid does still have some safety considerations, as with all disinfectants, it is widely accepted that storage, generation and stability is superior to using chlorine.
The membrane amperometric paracetic acid sensor is a two electrode sensor which operates at an elevated applied potential, which eliminates zero drift. Its unique design means that no reagents or buffers are required at all and calibration is a simple point (no zero required) operation.
In applications such as pulp and paper food preparation and waste water, where there is likely to be a build up of solids in the sample, the ORAKEL peracetic acid sensor can be equipped to automatically clean itself at regular intervals with all the benefits of no operator intervention.
Anywhere you have a requirement to measure residual CHз,COзH is a suitable application for the ORAKEL peracetic acid sensor. It is particularly suited to working in sites where reliability and ease of use are most important. Conductivity acids can be tolerated but the water must not contain any tensides.
Membrane covered, amperometric two-electrode system
0-200mh/l, 0-500mg/l, 0-2000mg/l, 0-5000mh/l, 0-10000mh/l
0.1mg/l, 0-1mg/l, (ppm) depending on the probe range
1% Suphuric, Nitric or Phosphoric acid.
Optical luminescent devices which are extremely resistant to abrasion, extremely stable, and have greatly reduced maintenance and whole life costs.
The ORAKEL Dissolved Oxygen sensor has no chemicals or moving parts. It is stable and reliable making it excellent for process controls and is suitable for all Dissolved Ovygen applications.
The ORAKEL Suspended Solids senor has a large dynamic range, which eliminates the need for a “zero” and also eliminates the effect of background light.
For multiple measuring ranges, the suspended solids sensor can monitor turbidity and suspended solids from 2 NTU (1mg/l) to 8%* solids.
The ORAKEL COD/TOC Sensor uses UV254 light as a surrogate measurement for detecting organics in water.
It is designed in modular form so that it can be integrated with other sensors, such as pH, turbidity and dissolved oxygen, to provide all the tools needed for either a stand-alone UV254 analyser or as part of an effluent discharge monitoring system.
The ORAKEL COD/TOC Sensor provides online continuous organics monitoring utilising a 254nm ultraviolet light source.
The pH5 electrode has a double-junction reference to prevent contamination of the reference from sample components.
This design gives the electrode a longer life compared to ordinary electrodes (up to 3 yrs). The electrode also has a hemi-shaped glass measuring surface which is more durable than the traditional bulb-shaped glass.
Sitting at the top end of the market place, the ORAKEL pH probe has a longer life and lower maintenance requirements. Typically it only needs calibrating once every two or three months, making it a very cost effective solution.
The ORAKEL range of Conductivity meters also double as a Salinity meter and a TDS meter. The range measures conductivity in water from 0 to 2,000,000 µS/cm (range selectable). You can choose between a standard graphite sensor and a more sophisticated toroidal sensor, or stainless steel ‘special’ sensors for high temperature, high pressure conductivity measurement applications.
The ORAKEL range of Residual Chlorine Analysers, Residual Chlorine Controllers and Residual Chlorine Monitors are membrane devices which are insensitive to changing pH, use no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs.
The membraned amperometric chlorine sensors are enhanced with a third, reference electrode which eliminates zero drift. Its unique design means that pH correction is not usually required at all, completely eliminating reagents.