The advantages and disadvantages of the time-proportional water quality sampling method

The time proportional water sampler's sampling method automatically samples by setting time intervals, ensuring the representativeness of water quality data at different time periods. Its core advantage lies in:

Advantages

Time consistency ‌ : By collecting samples at preset time intervals, sample bias caused by flow fluctuations can be avoided, and it is suitable for water bodies with stable or periodically changing flow. ‌

is easy to operate ‌ : There is no need to monitor the flow in real time. After setting the parameters, the equipment runs automatically, reducing the cost of manual intervention. ‌

data is traceable ‌ : record the sampling time, sample bottle number and other information, which is convenient for subsequent analysis and supervision. ‌

Disadvantage

Poor flow adaptability ‌ : When there is a significant change in water flow (such as during the flood season of a river), samples collected at time intervals may not reflect the actual water quality fluctuations. ‌

Scenario limitation ‌ : It is only applicable to scenarios where the traffic variation pattern can be predicted. If the traffic fluctuation is irregular, it may lead to a decline in sample representativeness. ‌

This sampling method should be selected based on actual monitoring requirements. For instance, it is more suitable for application in scenarios with relatively stable flow rates, such as sewage treatment plants.