How to deal with high oil content domestic sewage

At present, the oil removal technology of oily wastewater known to the public can be divided into chemical treatment, physical treatment and biological treatment. But these treatments are either high investment costs, or treatment effect is not good, low cost and high efficiency technology has not been born, so most of the catering wastewater can not solve the problem of oil pollution perfectly.

Chemical treatment

Chemical treatment, also known as coagulation, mainly relies on flocculants to reduce oil content. The main flocculants are divided into inorganic flocculants and organic flocculants. Polyaluminium ferric chloride is a widely used inorganic flocculant, which has good oil removal effect and can reduce sulfide in sewage. Organic flocculants can adsorb suspended solids, colloids and sludge, and the yield is lower than inorganic flocculants.

Physical therapy

The physical method is to use the incompatibility of water and oil and other physical phenomena, oil density is less than water to classify oil. Common technologies include flotation technology, cyclone technology and membrane treatment technology to achieve oil-water separation.

Common technologies include flotation technology, cyclone technology and membrane treatment technology to achieve oil-water separation.

The physical method is to use the incompatibility of water and oil and other physical phenomena, oil density is less than water to classify oil. Common technologies include flotation technology, cyclone technology and membrane treatment technology to achieve oil-water separation. Biological treatment methods