Are Water Treatment Plants Worried About Over - Chlorinating After Long Holidays? Online Residual Chlorine Sensors Linked with "Automatic Chlorination" Ensure Disinfection Effect in Pipe Networks!

In municipal water treatment plants, water quality safety is of utmost importance, especially the control of residual chlorine content. However, during the National Day holiday, if there is an unexpected power outage, problems arise. The linkage parameters between the online residual chlorine sensor and the chlorination system are likely to "reset to zero", just like an alarm clock losing power and having its time reset. The pre - set rule of "automatically adding chlorine when the residual chlorine is below 0.05mg/L" suddenly becomes invalid. Now, let's take a detailed look at this issue, brought to you by Maideshi, a chlorine sensor manufacturer.

If the staff fails to detect this problem in time, it will result in insufficient residual chlorine in the outgoing water. Especially at the end of the pipe network, such as in high - rise residential areas, the residual chlorine content will fall below the national standard (≥0.05mg/L). This is not just about facing penalties from regulatory authorities; a single fine may exceed 100,000 yuan. More seriously, bacteria may grow in the water, directly affecting the safety of residents' water use. Imagine residents turning on the tap and using water that may contain bacteria; the consequences are unthinkable.

 The Key to Solving the Problem: "Linkage Test + Response Verification" Dual Solutions

When facing the situation where the chlorination system "oversleeps", we can solve it in two steps.

 Step 1: Simulate a scenario of insufficient residual chlorine with an online residual chlorine sensor 

The staff manually lowers the detection value to 0.04mg/L to see if the chlorination system will start automatically. This is like giving the chlorination system a small test to verify whether the linkage function has returned to normal.

 Step 2: Record the time from "residual chlorine trigger threshold → chlorination system response" three consecutive times

Each response time should be less than 30 seconds to avoid continuous low residual chlorine due to a lag in response. At the same time, back up the linkage parameters in the system so that even if there is another power outage, the data will not be lost, which is like putting an "insurance lock" on the linkage parameters.

 Selection Points: Standards for Sensors Suitable for Water Treatment Plants

When selecting an online automatic residual chlorine sensor to ensure chlorination linkage, there are two core points to focus on.

 The first is linkage compatibility 

The sensor should support connection with mainstream chlorination systems, such as chlorine dioxide dosing machines, through 4 - 20mA or RS485 signals to ensure parameter synchronization, just like two people need to use the same language to communicate smoothly.

 The second is the threshold custom - setting function 

The sensor should be able to accurately set the residual chlorine trigger threshold, for example, setting it to 0.05mg/L, and the error should be controlled within ±0.01mg/L. This can avoid false triggering or non - triggering due to inaccurate thresholds. If the pipe network of the water treatment plant is complex, a model with data storage function should be selected to facilitate the staff to trace the changes in residual chlorine when the linkage is abnormal.

  Effect Verification: Feedback from Practical Applications in Water Treatment Plants

After the National Day holiday, a municipal water treatment plant found that the linkage between the online residual chlorine sensor and the chlorination system had failed. Through simulation tests and three response verifications, with response times of 22 seconds, 25 seconds, and 23 seconds respectively, the staff successfully re - activated the linkage function.

After adjustment, the residual chlorine content in the outgoing water was stable at 0.2 - 0.3mg/L, and the minimum residual chlorine at the end of the pipe network reached 0.06mg/L, fully meeting the national standard. In this way, not only were penalties from regulatory authorities avoided, but the cost of pipe network flushing due to insufficient residual chlorine was also reduced, saving about 30,000 yuan per month. Moreover, the number of residents' water - use complaints decreased by 70%, and residents can finally use safe water. Therefore, choosing a suitable online residual chlorine sensor and doing a good job in chlorination linkage are very important for water treatment plants. If you also encounter difficulties in controlling residual chlorine, welcome to consult Maideshi, a chlorine sensor manufacturer, at any time!