Coagulant water purification flocculant PAC dosage in water treatment

Use of polyaluminum chloride:

First, the dilution process: in low turbidity water, the solid polyaluminum chloride product is dissolved in water in a ratio of 1:3, and then diluted with 10-30 times of water to the desired concentration.

Second, the initial dosing process: in the domestic and production sewage, with reference to each ton of sewage first add about 30g of polyaluminum chloride products. Then add the diluted polyacrylamide product. If the effect is not obvious, please reduce or increase the dosage of the product as appropriate.

In special cases: in the paper mill sewage treatment, the proportion of low turbidity water is used, and if the effect is not obvious, it can be added at the discretion.

 Under normal circumstances: when the raw water turbidity is 100-500mg/L, the dosage is 5-10mg, that is, 5-10kg per kiloton of water. It is best to conduct a small test according to the water quality characteristics before use. Good value, then use).

The specific circumstances of the test are determined, generally as follows

The concentration of PAC is 10%-20%, and the dosage is 1-2ml/L.

The PAM was prepared at a concentration of 1 - 2 Torr and the dosage was 1 - 2 ml / L.

In general, one ton of water is added with 300-500g PAC.

If the flocculation effect is not good, a flocculant such as polyaluminum, amide or ferrous sulfate may be used together. After the acid water is added with sodium hydroxide for acid-base neutralization, a flocculant is added to flocculate and precipitate.

Different treatment water quality, PAC dosage is not the same, there is no specific requirements, according to the actual situation, it is better to do small tests in the laboratory, take several samples at different sampling points in different time periods, and judge patiently. There are no absolute guidelines, the above is for reference only.