зневоднення

Sewage sludge accumulating at treatment facilities is aqueous suspensions separated from wastewater during treatment processes. Untreated sludge has been discharged for decades into overloaded sludge beds, dumps, or quarries, leading to environmental safety violations and deteriorating people living conditions. Due to a high content of colloidal substances, sludge poorly releases water. An important step in sludge disposal is dewatering, which significantly reduces sludge volume.

High-viscosity crude oils from the Yablunivske field (Ukraine, Poltava region) have been studied. The oils were diluted with gas condensate to reduce viscosity, and then various demulsifiers were added. It was established that it is expedient to dilute oil with heavy gas condensate and dehydrate it with PM-1441 brand A non-ionogenic demulsifier, based on block copolymers of ethylene and propylene oxides. The dewatering degree was found to be 95 %.

The experimental results concerning demulsified ability of block copolymers of ethylene and propylene oxides wich may be used as  demulsifiers for oil emulsions have been represented. The dependence of their efficiency on the content of oxyethylene and oxypropylene groups in the molecule has been determined. The dependence of their degree of dehydration on the temperature and emulsion composition has been determined. 

Наведено результати лабораторного дослідження деемульгаційної здатності нового
деемульгатора ДМ-3 на основі суміші оксидів етилену та пропілену, порівняння його
ефективності з промисловими деемульгаторами. Після одержання позитивних
результатів лабораторних досліджень проведено промисловий пробіг деемульгатора ПМ
1441 марки Б, який має подібний склад до ДМ-3, та порівняння з імпортним
деемульгатором Demtrol 4225. Результати роботи в промислових умовах деемульгатора
ПМ-1441 марки Б дають підстави для проведення промислових випробувань