Is there anyone who can solve the problem of dewatering oily sludge, reducing its moisture content from around 90% to around 60%?
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Is there anyone who can solve the problem of dewatering oily sludge, reducing its moisture content from around 90% to around 60%?
What kind of sludge? Is there sludge contained in crude oil? I’m not quite sure; it seems that some devices are needed to handle this!
The moisture content in sludge and slurry can be reduced by heating it, directly or indirectly, to cause the water to evaporate; this process is commonly referred to as sludge drying in the industry, and the technology is quite mature
It can be mixed with biological activated sludge in a certain ratio, along with PAM flocculant added at a dosage of 1–2‰, and then sent to a centrifugal dehydrator for dehydration, resulting in a moisture content that can be reduced to around 85%. Because the properties of the sludge vary, you need to conduct experiments on-site to determine the appropriate ratio, so as to achieve good results. To reduce the moisture content to 60%, mechanical dewatering is not sufficient; sludge drying equipment is necessary!
The person on the 4th floor is right. May I ask, to what extent can the moisture content be reduced after filtration using a filter press?
Plate and frame filter pressing can generally remove 10–15% of the moisture, after which the sludge is dried.