Continuous discharge of boiler water
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What are the reasons for the low pH and phosphate levels in the boiler water drain?
The amount of trisodium phosphate added was low, resulting in low pH levels and low phosphate concentrations
1. The “continuity” of continuous boiler water drainage is in contrast to periodic blowdown. 2. Continuous discharge of boiler water is a method for controlling its quality, and adjustments need to be made based on the quality of the boiler water. 3. “Continuous discharge” does not mean discharge without any limits; it is necessary to take into account both water quality and the rate of waste discharge as opposing criteria – it is essential to control water quality while simultaneously reducing the amount of wastewater discharged
1. The reason for the low level of phosphates is, firstly, less phosphates being added; secondly, the spacing between them is large, which results in all the phosphates inside the evaporator or boiler being removed. 2. The low pH level is caused by the low amount of phosphates present. 3. Ultimately, to resolve this issue, the problem of low phosphate levels must be addressed; the amount of phosphate added can be increased slightly. If the effect is still not noticeable, the discharge valve should be reduced, and the sample should be observed again, while also taking into account parameters such as silicon levels.
For energy savings and cost considerations, keep the number of rows low. Adjust using regular sewage discharge along with relevant indicators.
There is only one reason for low levels of Ph and phosphate: excessive frequent discharge. The manual valves for continuous and scheduled discharge can be turned down to prevent leakage; if that doesn’t work, close them completely and reopen the valves only during discharge
The medication concentration is insufficient； Excessive steam production, too much water supply, and insufficient dosage of chemicals ； The continuous discharge is set too high