Is the Residual Chlorine Data in Water Plants on a "Roller Coaster"? Online Sensors with "Buffers" Stabilize Detection Values like Pressure Reducing Valves

In water treatment plants, sewage treatment plants, swimming pool water treatment enterprises, etc., online residual chlorine water quality sensors are important tools for monitoring water quality. However, the presence of chlorine dosing pumps has become a major headache. When the chlorine dosing pump starts and stops, the residual chlorine concentration rises and falls suddenly. The sensor data is like a "roller - coaster ride", with a fluctuation range of up to 0.3mg/L. This has really puzzled the staff, making it impossible to accurately judge the actual residual chlorine value. Now, the manufacturer of residual chlorine water quality analyzers will explain it to you in detail!

If the chlorine dosage is adjusted according to these incorrect data, there will be big problems. If the residual chlorine exceeds the standard, the taste of the water will deteriorate, and it will also corrode the pipes. If the residual chlorine is insufficient, the disinfection will be incomplete, and the water quality will not meet the standard. A water plant was complained by users about "strange smell in tap water" because of this issue. Finally, the rectification cost exceeded 50,000 yuan.

  Analyzing the Problem: Why Does the Chlorine Dosing Pump Make the Residual Chlorine Data "Out of Control"?

  1. Analyzing the Root Cause of Fluctuations

When the chlorine dosing pump starts, high - concentration chlorine water is instantly injected into the pipeline, and the residual chlorine value soars in a short time. When the pump stops, the residual chlorine in the pipeline is diluted with the water flow and drops rapidly, forming a "sudden rise and fall" pulsed fluctuation.

 2. Revealing the Limitations of the Sensor

The sensor of the online residual chlorine monitor is particularly sensitive to changes in water flow and concentration, just like a "precision balance encountering vibrations". As long as the water flow fluctuation exceeds ±0.2m/s, it will directly interfere with the reaction of the detection electrode, causing the data to fluctuate and failing to reflect the real residual chlorine level in the pipeline.

  3. Practical Hazards

A sewage treatment plant misjudged the residual chlorine as "insufficient" due to data fluctuations. As a result, it added too much chlorine, causing the residual chlorine in the effluent to exceed the national standard by 0.2mg/L. Finally, it was fined 30,000 yuan by the environmental protection department and had to additionally treat the excessive - standard wastewater. It was really a lose - lose situation.

 Solution: Install a "Buffer" on the Online Residual Chlorine Sensor to Stabilize Data like Installing a Pressure Reducing Valve on a Water Pipe

 1. Core Principle

Install a flow buffer at the front end of the sensor. It has a diversion structure inside, which can slow down the change in water flow speed and control the water flow fluctuation within ±0.1m/s. In this way, the high - concentration chlorine water can be prevented from "rushing directly" into the sensor, making the detection environment more stable.

  2. Comparative Advantages

Without the buffer, the data fluctuation range is generally between 0.2 - 0.3mg/L, which cannot be used for accurate regulation. After installation, the fluctuation range can be reduced to 0.05 - 0.1mg/L, fully meeting the detection accuracy requirement of "±0.1mg/L" for water plants and directly guiding the operation of the chlorine dosing pump.

For water treatment - related enterprises, the "stable detection" of online residual chlorine water quality sensors is more important than "high precision". Installing a flow buffer is the core supporting measure to achieve stable detection. Therefore, when purchasing sensors, it is best to give priority to the option that can be equipped with a buffer, which can avoid the trouble and cost of separate installation later. If you encounter any problems in water quality monitoring, welcome to consult Maideshi, a chlorine sensor Manufacturer!

If you are looking for high - quality Digital residual chlorine sensor and online residual chlorine detector for your water treatment system, Maideshi can provide you with the best solutions. Our products are designed to meet the highest standards of accuracy and reliability, ensuring that your water quality monitoring is always on point. Contact us today to learn more about how our products can benefit your business.