[China Aluminum] In the process of treating sewage, the shape of the water purifying agent is very important. The combination of organic and inorganic flocculants also determines the treatment effect to a certain extent. The two major flocculants that are often used to treat sewage are polypropylene. Amide and polyaluminum chloride.
The effect of flocculant treatment of sewage is mainly affected by the following factors:
1, through the test to determine the correct amount of 2, full agitation mixing is the key to the key: related to the stirring speed and stirring time 3, the appropriate settling time 4, of course, there are applicable types of flocculants know more about these in a further look at the flocculation Agent pac and cationic polyacrylamide used in combination with controlled usage.
First, laboratory analysis is performed first. If the solid-liquid surface potential of the suspended material is negative (generally negative), the PAC+CPAM protocol can be used.
Second, determine the amount of PAC: also need to do a dose test in the test room, determine the amount of PAC alone and the turbidity effect curve.
Third, if the PAC alone uses a better amount of additive A, the actual usage can be set to 1/4--1/3 of the A value, and the remaining work is done by CPAM.
Fourth, the laboratory to determine the ratio of PAC and CPAM added: that is, in the case of PAC usage is 1/3 of the A value, determine how much CPAM is needed to bridge the PAC's aggregation effect is more appropriate. Through experiments, determine the proportion of PAC and CPAM added.
The above steps will enable the sewage treatment enterprises to obtain better results and lower flocculation costs. For example: If 1000 square water consumes 20kg of PAC, the effect is better. In fact, 6KG PAC can be used to complete condensation. The 200 g of CPAM (usually 1/30 of the PAC dosage) was used to complete the connection of tiny flocs that could be completed with the original 14KGPAC. In this cooperation, PAC and CPAM each completed their own more handy work and achieved better results.
The above processing methods are also recognized as efficient, low-cost combinations.
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