Washery wastewater treatment for pharmaceutical polyacrylamide pam + office 010-57193076-- phone 13436502885-- fax 010-80570010-- qq457423671 Guoshao Jun company network http://www.bjsbqhb.com Beijing Environmental Protection Technology Co. Biqing water is free samples, technical support, service tracking, your satisfaction, my pleasure ......... anionic polyacrylamide (PAM) according to different uses and users of the product performance requirements can choose to use a different molecular weight, can be used: 1, industrial wastewater treatment; 2, drinking water treatment; 3, the recovery tank drain starch and starch factory shed and alcohol plants; 4, driving oil EOR; 5, profile plugging agent; 6, 7 paper chemicals, coal washery Environmental Science and Technology Co., Ltd., Henan Miaosen polyacrylamide use and ratio: polyacrylamide required before using the solid backup solution formulated to 0.1--0.5%, when adding water to dilute or re-delivery, 0.5% of the spare solution storage period of seven days, 0.05% of the dosing solution storage period of three days. Should pay attention to the preparation of polyacrylamide solution as follows: (1) dissolution. Dissolved polyacrylamide requires a certain temperature to accelerate the dissolution rate. But the temperature is too high, but also make high polymer molecular chains, reduce the use of effects, more appropriate dissolution temperature of 50 --- 60 ℃. (2) with stirring. Dissolved polyacrylamide should avoid excessive shear stirring, stirring is too strong causes molecular chain scission, thereby reducing the use of effects. Should adopt the low-speed paddle stirring, such as anchor type, frame type, multi-paddle like. Stirring speed of 60 rev / min or so. Transportation should be avoided when using high-speed centrifugal pumps, piston pumps or more appropriate use of diaphragm pumps. (3) feed. Key polyacrylamide dissolved, is expected to vote uniformly dispersed. Generally the first solution is heated adjusted to 50--60 ℃. After starting the mixer, preferably by mechanical vibration screen feeding (sieve size of 10 mesh), day to avoid the "big lumps", "fish-eye-like" insoluble particles, so that the polyacrylamide is fully dissolved, play good results. (4) Avoid pick and iron solution. Stir in the dissolved and transported dosing system, preferably plastic, ceramic, aluminum, stainless steel and other materials.