M4Knick Industrial Wastewater

Wastewater Treatment Facts

Industrial wastewater treatment is essential within industrial chemical plants; if not performed correctly, it can impact the ability of the plant to run efficiently, or in worse case scenarios, can cause a shut down until the problem is corrected.
Common measurements found in wastewater treatment facilities of industrial plants include effluent, influent, odor control and the clarifier.

Environmental Compliance, Meeting Requirements Confidently

Monitoring Wastewater pH, ORP, and dissolved oxygen

pH can greatly vary in range, depending on the feed that enters a plant; also problematic are extremely low pH liquids causing damage to treatment system parts, potentially killing good bacteria in the clarifier. When it is known in advance that low pH liquid is entering into the process, operators can divert influent which protects the system. Designed for difficult industrial processes, the SE 555 pH electrode is a great choice service where pH can vary- and fast response time as well as long service life are required.

For understanding if the system is in balance, an excellent method is measuring ORP in the clarifier- allowing “bugs” to respire efficiently. The best indication of system health is in keeping the ORP electrode submerged to about ¼ the total depth of the clarifier. Using the same robust design as the SE 555 pH electrode, the SE 565 ORP electrode can operate in very difficult applications.

Critical to operations is knowing that aerobic microorganisms are getting enough oxygen to convert organic waste into inorganic compounds and reproducing, thus accurate dissolved oxygen monitoring readings are important. Ensuring this, the SE 715 digital dissolved oxygen sensor is ideal for submersible service.

Three of the sensors share 2 common features: the Memosens® inductive connection and the ability to store the calibration in the sensor. In the past in order to avoid process liquid from damaging cable connections, customers would have to install all sensor cables into conduit or use potted cables, which created lots of additional work to replace the sensors when maintenance was needed, during field calibrations.

Custom designed by M4 Knick is a submersible sensor assembly, allowing the customer to quickly take up to four sensors out of service, replacing them with pre-calibrated sensors resulting in minimum down time and reduced time spent at the clarifier. An submersible assembly is attached to a swing-arm system, allowing the customer to conveniently lift or submerge the sensor assembly into the clarifier to the correct depth.

Customer Return on Investment

Reduced Maintenance Costs: Memosens smart digital sensors can be calibrated in shop and then taken to the field. Once plugged into the Stratos Evo/Pro transmitter, the sensor will automatically share calibration data, eliminating the need for field calibrations.

Measurement Accuracy and Time Savings: Memosens inductive connections allow the pH, ORP, and DO sensors to be lowered 2′ below the water surface, providing a superior representative measurement compared to either ridged conduit or slip streams. Increased sensor reliability allows the customer to put the system into automatic control, something not possible before, and eliminated shutdowns due to process upsets, all of which significantly saves time when maintenance is needed.