What are the precautions for the treatment of sludge dewatering with cationic polyacrylamide? Some customers have consulted the product manager of Zhongqiao: The effect of cationic polyacrylamide on sludge dewatering is not very good. Why? Today, Zhong Qiao Xiaobian answers this question for everyone.
When operating the cationic polyacrylamide for sludge dewatering, it is necessary to pay attention to some operational matters in order to make the cationic polyacrylamide exert its flocculation and sedimentation effect better. Specific operational items are listed below.
First, the filtration pressure has a great influence on the specific resistance of sewage sludge: after testing, it is usually the case that as the filtration pressure rises slowly, the natural filtration speed will slowly increase. The test and calculation methods show that the sludge specific resistance of sewage is proportional to the filtration pressure of the product.
Second, we must pay attention to the PH value of the sewage, because the pH value of the sewage has a certain impact on all aspects of water treatment, and it has a very important impact on the sludge dewatering.
Third, the stirring speed after the addition of the cationic polyacrylamide: if the stirring is insufficient, the cationic polyacrylamide hardly exerts its own function, so it is sufficiently stirred at the time of use to prevent the formation of a block due to insufficient stirring, and formation. The bulk cationic polyacrylamide flocculant has no effect on the dewatering of the sludge.
The above is the precautions for the dehydration of sludge by cationic polyacrylamide, and I hope to help everyone.
