The oily wastewater of centrifugal extraction machine processing machine manufacturing industry
oil substances in the waste water usually exist in three states.
( 1) Floating oil, oil droplets size is larger than 100 microns and is easy to be separated from the wastewater. Oil in the wastewater dispersed particles is bigger,> = 100 microns in size, easy to separated from the wastewater. In the oil sewage, this oil accounted for the total oil content in water of 60 ~ 80%.
( 2) Oil droplets size between 10 a 100 microns, heartfelt floating in the water.
( 3) Emulsified oil, the oil drop diameter less than 10 microns, oil in the wastewater dispersed particle size is small, emulsified state, not easily separated from the wastewater.
oily wastewater contained oil substances, including crude oil, oil products, tar and extractant, and consumption of animal and plant oil and fat. From the water body pollution, mainly oil and tar. Different industrial sectors oilseed materials by the wastewater concentration difference is very big. Such as oil refining process of waste water, the oil content of about 150 ~ 1000 mg/l, the tar content in the coking plant wastewater is about 500 ~ 800 mg/l, the gas occurrence station tar content in the wastewater can reach 2000 ~ 3000 mg/l.
oily wastewater if not be recycled, will cause waste; Discharged into rivers, lakes or the gulf, polluted water, affecting aquatic creatures; Can jam is used for agricultural irrigation, the soil, obstruction of crops.
the article source: network