Application of Chlorine Water Quality Analyzer in Industrial Circulating Water
Release time:2025.11.28
Application of Chlorine Water Quality Analyzer in Industrial Circulating Water
1. Core Control Principle: Balancing Sterilization, Scaling Prevention and Corrosion Control
2. Standard Installation: Bypass Pipeline Mounting
- Draw low-flow branch sampling pipelines from circulating supply or return water pipes;
- Install Bebur BT6308-Cl membrane amperometric chlorine analyzer for continuous measurement of free chlorine / total chlorine;
- The instrument transmits signals including 4-20mA and Modbus RTU to connect with PLC and chemical dosing control cabinets.
3. Automated Linked Control Solutions
3.1 Closed-loop Automatic Dosing
- When detected chlorine concentration is lower than the preset minimum value: chlorine tablet dosers and sodium hypochlorite metering pumps start automatically for chlorine replenishment;
- When chlorine concentration exceeds the upper limit: dosing stops. Makeup water and blowdown valves can be activated to dilute water and reduce chlorine quickly to avoid metal corrosion;
- Compatible with slow-release chlorine, sodium hypochlorite, chlorine dioxide and other chlorine-containing disinfectants.
3.2 Zoned Management for Multiple Circulating Water Units
4. Industry-specific Application Scenarios
4.1 Circulating Cooling Water of Thermal Power Plants
- Total chlorine is stably controlled within 0.5~1.2 mg/L;
- Used together with corrosion inhibitors; the analyzer interlocks dosing equipment to prevent pitting corrosion and leakage of copper tubes induced by high chlorine, as well as restricted power output due to poor heat exchange caused by biological slime.
4.2 Circulating Water in Chemical & Coal Chemical Plants
- Online monitoring tracks chlorine loss and adjusts dosing frequency dynamically;
- Prevent heat exchanger clogging and insufficient cooling for chemical reactions caused by biological slime;
- Capable of distinguishing free chlorine and combined chlorine. High combined chlorine indicates excessive ammonia nitrogen, providing guidance for chemical adjustment.
4.3 Central Air-conditioning Circulating Water for Commercial Buildings
- Free chlorine controlled at 0.8~1.5 mg/L;
- Unattended automatic monitoring inhibits Legionella and avoids corrosion of galvanized air conditioning pipes under excessive chlorine.
4.4 Clean & Turbid Circulating Water in Steel Mills
Turbid circulating water contains high suspended solids, matching anti-fouling membrane chlorine analyzers.
Stable chlorine control suppresses iron bacteria and sulfate-reducing bacteria, preventing pipeline tuberculation and perforation and lowering maintenance shutdown frequency.
5. Operation & Maintenance Benefits
Eliminate frequent manual sampling and testing
The electrochemical analyzer delivers 24/7 continuous readings instead of hourly manual titration, cutting labor costs of water quality laboratories.
Reduction of chemical consumption
Manual experience-based dosing often causes overdosage. Precise online chlorine control reduces consumption of sodium hypochlorite and chlorine tablets by 15%~30% and lowers operational expenses.
Early warning of abnormal water quality
Sharp chlorine drop usually implies ammonia nitrogen inflow or organic leakage, triggering instrument alarms for troubleshooting. Persistently high chlorine signals faults of makeup or blowdown valves for timely maintenance.
Compliance with environmental & safety audits
The analyzer records and exports historical data automatically to form water quality reports for environmental protection and work safety inspections.
6. Combined Supporting Solutions
- Combined use with online pH analyzers: pH affects the disinfection efficiency of hypochlorous acid. The linkage system adjusts chlorine dosage according to pH fluctuation.
- Heat tracing installation for low-temperature winter conditions to guarantee stable sensor signals and normal chlorine measurement.
- Multi-parameter integration: collocation with conductivity and turbidity meters realizes integrated management of blowdown and chlorination for full-cycle circulating water control.
7. Advantages of Bebur BT6308-Cl for Circulating Water
- Membrane amperometric technology resists wide pH fluctuation; reagent-free operation adapts to long-term harsh industrial conditions with low maintenance frequency.
- Switchable measurement between free chlorine and total chlorine: effective free chlorine reflects disinfection capacity, while combined chlorine data diagnoses abnormal ammonia nitrogen.
- Long maintenance interval, suitable for exposed pipelines and remote cooling towers in factories to reduce field service times.
- Multiple output options including relay, 4-20mA and RS485 Modbus, compatible with domestic and imported dosing control systems.
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