Refinery Wastewater

Purification, neutralization and reuse - treatment of wastewater is as diverse as its impurities. Knick offers sensors, fittings and measuring devices, measuring technology for every measuring loop.

pH Measurement in Contaminated Wastewater

In refineries, the individual process steps (e.g. distillation, cracker, desulfurization) also generate wastewater which has to be treated. The diagram shows a typical wastewater treatment process in a refinery. After separation of the aqueous components from the hydrocarbons, these are further processed under control of pH and oxygen content (bacterial degradation, filter stages). The resulting purified process water can be reused, and the dried sludge is disposed of.

Challenges

Substances contained in the medium affect the performance of the pH sensors used (sludge, hydrocarbons, heavy metals...)
Regular cleaning is absolutely necessary
pH values are between 6-9
Temperatures up to 30 °C
Danger zone (Ex)

Why Knick ?
The sensor is automatically cleaned every few hours with 60 °C warm water, manual cleaning is therefore no longer necessary. The sensor only needs to be calibrated weekly. Before installation, the sensor had to be manual cleaned and calibrated every 2-3 days. As a result, the lifetime of the sensor has doubled to more than 12 months.

Matching Products

Product number:

E401X.030

WA131 SensoGate Retractable Fitting | Modular | Pneumatic | For simple, commercial controllers

Product number:

WA131

Glass electrode for pH measurement SE555X/*-NMSN-B1 with Memosens

Product number:

SE555X/2-NMSN-B1

Product number:

SE555X/1-NMSN-B1

Related Industries and Applications

Oil and Gas

With automatic maintenance systems to longer sensor life, even with sticky hydrocarbons and in explosive environments.

Hydrosulfurization (HDS)

pH Measurement in the reprocessing of mineral oil products

Monitoring of Refinery Wastewater in Sour Water Strippers

pH Measurement in Sour Water

Isobutane and Propane Dehydrogenation

pH, ORP and conductivity measurements in condensate

Biodiesel Production

pH measurement in transesterification

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