A na-eji ihe nkedo screw press na-eme ka mmiri sludge sie ike nke ọma.Mmiri sludge bụ mmiri nwere ọtụtụ ihe siri ike kwụsịtụrụ, nke enwere ike ịmepụta site na ọgwụgwọ mmiri mkpofu, ụlọ ọrụ na-edozi nri, ụlọ ọrụ kemịkalụ na ngalaba ndị ọzọ nke ọrụ mmadụ.

Igwe ihe nkesa nke screw-press sludge dewatering bụ ihe ọhụrụ nkewa nkewa siri ike, nke na-eji ụkpụrụ extrusion screw, na-emepụta ike extrusion siri ike site na mgbanwe nke screw dayameta na pitch, yana obere oghere n'etiti mgbanaka na-akpụ akpụ na mgbanaka edoziri. , ịghọta extrusion dewatering nke sludge.