when oil and gas fields enter tertiary oil recovery stage, single irrigation flooding will greatly reduce its harm efficiency, increase water consumption and increase oil moisture content. In addition...>
The raw materials used for potable water treatment and waterworks are different from industrial grade PCL. Aluminum hydroxide powder and calcium aluminate powder are used in both of them, which are pr...>
When the polyacrylamide concentration is 0.2%, the temperature is 25~30 degrees, for the mechanical sludge, suitable polyacrylamide ionic degree 55%~60%, molecular weight 15 million cationic organic p...>