Ph Monitoring In Semiconductor Chemical Clarifiers
pH Measurements on Semiconductor Wastewater Streams
In various stages of water treatment applications, the removal of hazardous substances depends on chemical clarifiers. Clarifiers are settling tanks created for use along semiconductor wastewater streams at various stages. To balance the low pH influent from the semiconducting production areas, lime is added. To ensure that pollutants are properly eliminated during the influent, clarity, and effluent stages of water treatment, pH monitoring is essential. The pH level in the clarifying system must therefore be checked and often regulated. Lime is used to the clarifying procedure to assist maintain ideal pH levels. But if not properly cleaned, over time, this lime can lead to buildup and possibly harm the pH sensor.
The Challenge of Semiconductor Chemical Clarifiers
When lime is introduced gradually over time and the overall chemistry of the chemical clarifier’s contents combine, a hazardous environment for the sensor may result. Users are hence required to do routine physical upkeep and cleaning. Failure to maintain cleanliness and upkeep can shorten the life of a sensor and cause incorrect readings from accumulation. This necessitates regular sensor changes, which raises costs and could shut down a process.
The Solution
Strong pH sensors are needed in semiconductor chemical clarifiers to survive both lime accumulation and the acidic environment. Due to the dual open connections in the Knick SE 554, the design offers a strong resistance to accumulation. Furthermore, the polymerized KCL offers resistance to leaching, and the proprietary Silamid reference reduces the rate of reference system poisoning. The glass used in the SE 554 can survive traces of hydrofluoric acid (HF). This extends the sensor’s lifespan for applications like clarifiers that process semi-conductor trash.
The CL-90 automated cleaning system and ARD 75 retractable immersion holder are used in conjunction with the Knick SE 554. The sensor is regularly maintained via automated cleaning cycles. The automated retraction and maintenance cycle reduces excessive buildup on the sensor, hence extending sensor life.
The CL-90’s transmitter, the Stratos Multi, is Memosens compatible. Memosens sensors, such as the SE 554, automatically provide the transmitter with calibration and sensor health data. Without any additional programming, the machine is ready to measure. Additionally, the Stratos Multi provides operators with diagnostics data that may be accessed instantly or via a DCS system.
What was the Customer’s ROI?
Reduced Downtime:The CL-90 and Knick ARD 75 retractable holders automatically clean the sensor to minimise drift and accumulation, which significantly reduces process downtime and unforeseen maintenance.
Reduced Maintenance Costs:Pre-calibrated In-the-field calibrations and troubleshooting are made easier by Memosens smart digital technology. Technicians no longer need to manually clean pH sensors thanks to the technology. The device also considerably prolongs the life of the pH sensor. Better sensor longevity thus lowers maintenance expenses by preventing frequent sensor replacement.
Increase Sensor Life:The SE 554 is resistant to lime buildup and trace HF because of its special glass formulation. The 554 can be used in conjunction with the CL-90 and ARD 75 retractable immersion holder to create routine automated cleaning cycles that increase sensor life while lowering material and labour expenses.
