Project Completion: Full Range of Chunye Water Quality Instruments Deployed to a Sewage Treatment Plant in Chuzhou

2026-06-26

Today, Shanghai Chunye Instrument Technology Co., Ltd. has successfully completed the installation, wiring, calibration and joint commissioning of a full set of water quality monitoring instruments at a sewage treatment plant in Chuzhou. All monitoring equipment has been officially put into operation. Intelligent technology forms a solid line of defense for water quality monitoring, and professional services safeguard the regional water environment.

Combining the plant’s process layout, monitoring points and complex on-site working conditions, this project deploys multiple self-developed core water quality monitoring devices in a one-stop solution with complete and comprehensive product coverage. The equipment lineup includes online pH/ORP meters, online dissolved oxygen analyzers, online CODcr / ammonia nitrogen / total phosphorus / total nitrogen analyzers, suspended solids concentration meters, ultrasonic sludge interface sensors, ultrasonic level transmitters, open channel flowmeters and vortex flowmeters, realizing full-process monitoring of nine key indicators for sewage treatment.

In accordance with different installation environments such as control cabinets, walls, tanks and pipelines, the construction team strictly followed factory standards and adopted three installation types: embedded, wall-mounted and pipe-mounted:

✅ Online pH/ORP Meters: Embedded panel mounting with a standard cutout size of 137×137 mm, compatible with integrated control cabinet layout. The instrument delivers measurement accuracy up to ±0.01 pH, supports automatic temperature compensation, and operates stably under a wide temperature range of -20~150℃.

✅ Online Dissolved Oxygen Analyzers & Suspended Solids (Sludge) Concentration Meters: Wall-mounted design with IP65 high protection rating, perfectly adapting to the humid and foggy environment inside the plant. The suspended solids meter features a maximum measuring range of 200,000 mg/L and built-in timed wiper function to effectively prevent sensor scaling and maintain long-term measurement precision.

✅ Ultrasonic Sludge Interface Sensors & Ultrasonic Level Transmitters: Fixed on tanks and pipelines to accurately capture sludge and liquid level data, providing reliable basis for sludge discharge, water pumping and other process operations.

✅ Online Automatic CODcr, Ammonia Nitrogen, Total Phosphorus & Total Nitrogen Analyzers: Cabinet-style analyzers arranged in compliance with monitoring substation specifications. Hard PVC pipes are adopted for fluid lines with downhill routing to avoid water accumulation. Equipped with a 12-way selector valve and high-temperature digestion module, the devices adopt national standard testing methods with data repeatability ≤2% for stable operation.

All instruments uniformly support dual power supply modes: 85~265VAC / 9~36VDC, with standard 4~20mA analog output and Modbus RTU communication. Water quality analyzers are additionally compatible with the HJ212 environmental protection protocol for seamless connection to environmental supervision platforms. Some units are equipped with multi-channel relays to interlock alarm, automatic cleaning and chemical dosing systems, integrating monitoring and automatic control into one system.

After installation, technicians carried out calibration and functional debugging for each device one by one:

Two-point and three-point standard buffer calibration as well as on-site comparison were completed for pH/ORP meters to guarantee accurate pH and ORP readings.

Response parameters of dissolved oxygen analyzers were optimized to achieve a response time of less than 60s at 25℃, meeting the monitoring requirements of aerobic tanks.

Multi-parameter water quality analyzers were configured with reagent ratios, digestion parameters and standard sample verification, supporting automatic/manual calibration and storing up to 5 years of historical data.

Sludge and level instruments underwent signal and ranging debugging to eliminate interference from the on-site environment.

Meanwhile, all instruments are equipped with multi-level password protection, historical data query, equipment self-inspection and other user-friendly functions, which effectively avoid misoperation by unauthorized personnel and greatly reduce later operation and maintenance workload.

This plant treats domestic sewage mixed with a small amount of industrial wastewater, characterized by complex water composition and drastic working condition fluctuations. Chunye’s full-set water quality monitoring solution covers the whole process including water intake, treatment process, effluent discharge, sludge and liquid level monitoring, fully complying with national online environmental monitoring standards. The equipment runs stably 24 hours a day with reliable data uploading, and full-lifecycle after-sales services including regular inspection and calibration are available.

We are deeply engaged in water quality monitoring. Our products serve sewage treatment, water supply, chemical, food and pharmaceutical industries, supporting comprehensive water environment governance with professional instruments and operation & maintenance services.