When it comes to sewage monitoring, there are two common market conditions, one is laboratory monitoring, and the other is online monitoring of water quality. In this chapter, water quality online monitoring instrument manufacturers will understand some problems that need to be paid attention to in the monitoring process of these two detection methods together with you!

I.Let’s start with laboratory monitoring. This method is a more common monitoring method used in water treatment plants, so to ensure the stability and accuracy of water quality, please note the following points:

1.To ensure that the laboratory nickel environment is kept clean to prevent sample contamination;

2.The laboratory should be equipped with a fume hood, and how to have volatile drugs in the experiment must be carried out in the fume hood;

3.Maintain relevant instruments regularly and calibrate them to ensure the accuracy of monitoring data;

4.For some relatively large instruments, it is necessary to put them in a ventilated position and keep them clean, as well as prepare enough fuel and experimental supplies for the laboratory;

5.The reasonable maintenance of drugs and reagents is also very important to ensure that their nature does not change, so as to avoid causing pollution to drugs during use, thus affecting the purity of drugs, so that monitoring data will also have a certain impact;

6.Thoroughly clean the glass containers used in the laboratory to avoid interference with the measurement results.

II.The above mentioned monitoring methods in the laboratory. Next, let’s talk about online monitoring of water quality. For some factory sewage outlets with serious water pollution, it is necessary to switch to online monitoring equipment, which needs to report monitoring data regularly to achieve water quality supervision of sewage discharge. If you want to get accurate online data, here are some things you should pay attention to!

1.Choose a suitable water quality online monitoring instrument. The sewage discharged by the factory must be different, and the range requirements will be different in the selection together (as for how to choose to consult the manufacturer to buy, explain your own situation).

2.Choose the right water intake point and the right water intake system. The selection of water intake point is mainly to take more representative water quality, and the water intake system is to ensure representative water quality reliability and continuity.

3.Suitable pretreatment system. The water sample pretreatment system is mainly to eliminate interference with instrument analysis and other factors, while not losing the representativeness of the water sample. The remaining methods usually include natural sedimentation, filter filtration and infiltration. Under normal circumstances, the level of pretreatment is determined according to the impurities in the water sample.