GN Solids Control and GN Separation & Conveying is 2 main brands of GN Group. GN Separation & Conveying mainly provides solids and liquid separation equipment in non oil and gas industries.

GN Dewatering Screw Press is an economical dewatering equipment, the working principle is use screw extrusion which aroused when the diameter or pitch of scew changes, plus the changing of distance between floating rings and fix rings to squeeze water out.
Typically, the materials feed into GN Dewatering Screw Press has solids less than 2,000 mg/l to 50,000 mg/l, and after treated the solids contains water less than 80%. In order to protect the dewatering screw press from blocking and extending the using life, solids size should be no larger than 2 mm with low hardness. While when feed weariness materials, inside the screw can be hard painted.

GN screw press sludge dewatering machine is a kind of economic and environmental friendly sludge dewatering equipment. It is a new type of sludge extrusion dewatering equipment by using the principle of screw extrusion, through the strong squeezing force generated by the change of screw diameter and screw pitch, and the tiny gap between the floating ring and the fixed ring, to realize solid-liquid separation. GN dewatering screw press is composed of fully automatic control cabinet, flocculation modulation box, sludge thickening and dewatering device, and liquid collecting tank. GN dewatering screw press is with automatic control technology, which can realize the flocculation fully automatic operation, and continuously complete the sludge thickening and squeezing, finally return or discharge the collected filtrate liquid.

In order to get a better dewatering performance, GN also provides one Chemical Dosing Unit, food sludge is mixed in the dosing compartment and finer particles are removed.
GN PAM Dosing Unit is a fully automatic chemical adding unit, equipped with feeding hopper, dosing compartment, dosing pump and flow gauges. All the main body is built with stainless steel.