How much should be added to PAM PAC? You can do experiments. Someone can help.
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When I first arrived at the commissioning site, I had no clue about coagulation and flocculation. Tell me the situation first: Inorganic wastewater mainly removes SS, Q=60m3/h, SS=140mg/L. Concrete pool 2.5 * 2.5 * 2m, add PAC, the dispensing concentration is 7.5%, the dosing pump is 44L/h, and the volume has been adjusted to 100%. Flocculation tank 2.5 * 2.5 * 2m, add PAM, the dispensing concentration is 0.04% (only 2kgPAM is added to the 5 cubic barrel), the dosing pump is 155L/h, and it has been adjusted to 100%. Effect: The alum flowers in the flocculation tank are small, finely broken, and have poor settling performance. The inclined plate sedimentation tank is turbid, and there are flocs floating up in the gaps between the inclined plates and they do not sink. Excuse me: 1. Is the PAM concentration too low? Will it block the pipeline and Y-type filter (De20 pipe) if it is generally 0.1%~0.3%? 2. What will be the consequences if PAC or PAM is overdosed?
1. The preparation concentration of PAM is generally around 0.1-0.2%. Low concentration is conducive to mixing and saves chemicals.； 2. PAC solid * It is customary to prepare it to 10% (weight to volume ratio), which facilitates measurement. 3. Excessive PAM will reduce the coagulation effect of some water quality, and the secondary pollution caused by its toxicity to the water body cannot be ignored. For organic flocculants, the production cost is generally high, and the degradation monomer of organic flocculants (such as polyacrylamide) causes secondary pollution to the water body. Therefore, the application of organic flocculants in water treatment is limited, especially in the treatment of drinking water. Based on PAM ratio: PAC=1:30. Perform appropriate adjustments according to water conditions.
The papermaking sewage shallow air flotation machine processes 250 cubic meters of water per hour, and inputs 540 liters of PAC and 10 liters of PAM per hour. The ratio of PAM to PAC is 1:54. Note that PAC is a bulk liquid and does not need to be diluted. PAM is dissolved in 3 tons of plastic barrels 10 kilograms at a time.
based on your data: PAC55ppm，PAM1ppm。 It is recommended that you increase the PAM configuration concentration to 0.2~0.3%.
Excess PAC will affect the pH value. For your question: (1) Will not block pipes
The concentration of PAM is a bit low. I don’t know whether it is anionic, cationic or non-ionic. Generally, anionic is used in sewage.