The modified filter ball can directly intercept, inertial interception and electrochemical adsorption of difficult-to-precipitate and small suspended solids. It has strong adsorption capacity for oil and other impurities, and has better floc effect on oily sewage. It is suitable for oil fields. The fine treatment of oily wastewater is also suitable for fine filtration of other industrial wastewater. During filtration, the porosity of the filter layer gradually decreases along the direction of water flow, forming a relatively ideal distribution state of the filter layer, and the filtration effect is better.
The modified filter ball has the characteristics of hydrophilic and oleophobic, which is larger than the ordinary filter ball and does not stick to oil. It can sink to the bottom of the filter under the action of hydraulic force during filtration, and the pore structure of the upper and lower tight filter layers is good; When the ball is running, the porosity of the filter layer gradually decreases along the direction of the water flow, forming an ideal distribution state of the pores of the filter material, which is large and small at the bottom. The interception effect is enhanced and the filtering effect is good.
