1. Technical Selection
A wireless liquid level control pump was selected.
This device is cable-free and equipped with a solar battery for power supply, ensuring continuous operation for one week without power concerns even in rainy days.

It can be monitored and controlled from the control room or pump room regardless of distance. It can also be set to automatically control the start and stop of the water pump and the opening and closing of the valve, with audible and visual alarms for high and low liquid levels.
Data is uploaded to the cloud server in real time and can be viewed and remotely controlled at any time on a computer, mobile phone, or iPad. We also provide a free configuration screen, which can display dynamic images of liquid level, pressure, etc. on a large screen.

2. Implementation Highlights
Power Supply Solution: (Optional) Built-in lithium battery in the instrument + solar power supply (for outdoor areas), which can effectively extend the usage time.
- Data Security: AES-128 encryption for data transmission to prevent data tampering.
- Redundant Design: Key parameters (such as effluent pH) are reported by dual sensors.

Benefit Analysis
1. Cost Savings:
Reduction of cable and construction costs by approximately 40%, saving initial investment of about 1.2 million yuan.
Lower maintenance costs (no need to regularly replace corroded cables).

2. Efficiency Improvement:
The data update frequency has been shortened from 1 minute in the wired system to 15 seconds, optimizing aeration control and reducing energy consumption by 12%.
The fault response time has been reduced from 2 hours to 10 minutes (through vibration monitoring and early warning).

3. Expansion Flexibility:
Deployment of wireless instruments for new anaerobic tank monitoring points only takes 1 day (compared to 2 weeks for wired solutions).

4. Simplicity and Convenience:
Data is uploaded to the cloud platform via NB-IoT signals and can be viewed in real time from the control room, mobile phone app, or computer at any time and place.

From this case, it can be seen that the application of Qinwei Instrument's wireless instruments in wastewater treatment plants can significantly enhance the level of intelligence, save costs, and be more convenient and efficient.