Medford Plant Reduces Chemical Costs with In-situ Chemscan Mini Analyzer

Overview

In the context of increasingly stringent wastewater treatment regulations, optimizing operational processes and minimizing chemical costs are top priorities for industrial parks and wastewater treatment plants. The case study at the Medford WWTP Plant, Wisconsin, USA, demonstrates the effectiveness of applying ChemScan analytical technology in achieving this goal.

Challenge

The Medford WWTP, with a design capacity of 1.4 MGD, treats both industrial and residential wastewater. The plant’s tertiary treatment system uses disc filters to remove orthophosphorus, a process that requires tight control of chemical dosing. However, the initial filtration and analysis system had problems:

• Measurement error: The membrane removes phosphate from the sample, resulting in a lower reading than the actual reading, causing chemical overdose.
• Increased operating costs: Manual filter cleaning and regular laboratory testing require a lot of time and effort.

Applications

To solve the problem, the Medford plant deployed an advanced engineering solution:

• Installation of ChemScan mini device: Two ChemScan mini analyzers are installed before and after the tertiary treatment. The robust design of the ChemScan mini does not require a separate filtration system, eliminating measurement errors due to sample filtration.
• Continuous and accurate analysis: ChemScan mini provides real-time process chemistry measurement data, allowing tight control of chemical dosage and optimization of process efficiency.
• Reduce the need for manual sampling: The ChemScan mini device reduces the frequency of manual sampling and laboratory analysis, saving time and costs.

Results

• Reduce chemical costs: Precise control of chemical dosage reduces chemical consumption, bringing significant economic benefits.
• Optimize operations: The design does not require sample filtration, which reduces maintenance and operation work.
• Save reagents: ChemScan mini uses minimal reagents, saving costs and minimizing environmental impact.

Conclusion

A case study at Medford WWTP demonstrates how In-situ ChemScan mini analyzers can be highly effective in optimizing chemical dosage and minimizing operating costs. This is an ideal solution for industrial sites and wastewater treatment plants looking to improve efficiency and comply with environmental regulations.