el: 189-6630-9500
Email: 512397844@qq.com
website: en.jingdiclean.com
Address: 6th floor, North building, No1 building, high tech equipment entrepreneurship center, 1133 Taoyuan Road, Xiuzhou District, Jiaxing
High voltage electrostatic circulating water manufacturers to explain to you, oil-water separation swelling oil in the water distribution.
(1) Oil slick
Most of the oil entering the water body exists in the form of floating oil. The particle size of the oil is larger than 100 μ m, accounting for 70% ~ 80% of the oil content. After standing still, it can float up quickly and spread out on the surface of sewage to form oil film or continuous phase of oil layer, which can be removed by general gravity separation equipment.
(2) Disperse oil
The dispersed oil is suspended and dispersed in the sewage in the shape of small oil droplets, and the particle size of oil drops is between 25 and 100 microns. The dispersed oil is mainly due to the turbulent flow condition, through the valve, orifice plate and other throttling devices, through the centrifugal pump and other conveying devices, the oil droplets are subject to shear force and disperse. Therefore, the oil-water separation system needs to avoid the emergence of stop valve. After standing for a period of time, the dispersed oil will aggregate into larger oil droplets and float to the water surface, and the oil in this state is easy to remove.
(3) Adhesion of solid oil
Oil adsorbed on the surface of solid particles in wastewater. The oil is treated as the solid particles are filtered out.
(4) Emulsified oil
Under the influence of surfactants, the oil droplets are covered with elastic and thick double electric layers, which repel each other with the same-sex charges, which prevents the oil droplets from colliding with each other and making the oil droplets stably exist in water for a long time. The particle size of oil drops is between 0.1 and 25 μ m, and they are in the form of emulsion or emulsion in water. It is difficult to be treated after emulsification, so emulsification should be avoided in industry. Emulsified oil should be avoided in industry.
(5) Dissolved oil
Oil droplets with particle size less than several nanometers are dispersed in water phase in molecular or chemical state. Oil and water form a homogeneous system, which is very stable and cannot be removed by general physical methods. However, because the solubility of oil in water is very small (5 ~ 15 mg / L), the proportion of oil in water is only about 0.5%.
