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GN Solids America LLC

Tel:+1 (713) 377-2984

Tel:+1 (713) 518-2368

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Add:6710 Windfern Road, Houston, TX 77040,USA


Dewatering Screw Press

GN Dewatering Screw Press is one economical and environmental friendly sludge treating equipment. It is a sludge extrusion dewatering equipment, through the strong squeezing force generated as the change of screw diameter and screw pitch, and the tiny gap between the floating ring and the fixed ring, to achieve solid and liquid separation.
  • Description

    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.

    GN screw press dewatering machine is widely used in sewage treatment projects of municipal, aquaculture, food, starch, oil, pharmaceutical, chemical, paper, leather and other industries

    GN Screw Press Dewatering Machine Technical Parameter (for Configuration)

    Model DS Standard Capacity
    (Absolute Dry Sludge)
    Capacity for Sludge with Different Concentration
    10000mg/L 20000mg/L 30000mg/L 40000mg/L 50000mg/L
    GNDL101 5~7 kg/h ~0.5m³/h ~0.25m³/h ~0.2m³/h ~0.15m³/h ~0.14m³/h
    GNDL201 15~20 kg/h ~1.5m³/h ~0.75m³/h ~0.6m³/h ~0.5m³/h ~0.4m³/h
    GNDL202 30~40 kg/h ~3m³/h ~1.5m³/h ~1.2m³/h ~1m³/h ~0.8m³/h
    GNDL203 45~60 kg/h ~4.5m³/h ~2.25m³/h ~1.8m³/h ~1.5m³/h ~1.2m³/h
    GNDL301 50~70 kg/h ~5m³/h ~2.5m³/h ~2m³/h ~1.5m³/h ~1.4m³/h
    GNDL302 100~140 kg/h ~10m³/h ~5m³/h ~4m³/h ~3m³/h ~2.8m³/h
    GNDL303 150~210 kg/h ~15m³/h ~7.5m³/h ~6m³/h ~4.5m³/h ~4.2m³/h
    GNDL304 200~280 kg/h ~20m³/h ~10m³/h ~8m³/h ~6m³/h ~5.6m³/h
    GNDL401 130~160 kg/h ~13m³/h ~6.5m³/h ~5m³/h ~4m³/h ~3.2m³/h
    GNDL402 260~320 kg/h ~26m³/h ~13m³/h ~10m³/h ~8m³/h ~6.4m³/h
    GNDL403 390~480 kg/h ~39m³/h ~19.5m³/h ~15m³/h ~12m³/h ~9.6m³/h
    GNDL404 520~640 kg/h ~52m³/h ~26m³/h ~20m³/h ~16m³/h ~12.8m³/h

    GN Screw Press Dewatering Machine Technical Parameter (for Capacity)

    Model Screw Diameter Screw Qty Screw Power Agitator Power Flushing Pressure Flushing Water
    GNDL101 100mm 1 0.18KW 0.18KW 0.1Mpa-0.2Mpa(No high pressure flushing device is required) 24 220
    GNDL201 200mm 1 0.37KW 0.18KW 32 420
    GNDL202 2 0.74KW 0.55KW 64 550
    GNDL203 3 1.11KW 0.55KW 96 700
    GNDL301 300mm 1 0.75KW 0.55KW 40 900
    GNDL302 2 1.5KW 0.75KW 80 1400
    GNDL303 3 2.25KW 1.1KW 120 1900
    GNDL304 4 3KW 1.1KW 160 2500
    GNDL401 400 1 1.5KW 1.1KW 80 2200
    GNDL402 2 3KW 1.5KW 160 3500
    GNDL403 3 4.5KW 2x1.1KW 240 5500
    GNDL404 4 6KW 2x1.1KW 320 7000

    Features of Screw Press Dewatering Machine

    1. The main body of the screw press sludge dewatering machine is a filtration device composed of fixed ring and moving ring, in which the screw axis runs through. The front section is for concentration and the back section for dewatering.
    2. The filtering gap formed between the fixed ring and the moving ring of the dewatering screw press and the pitch of the screw axis gradually decreased from the concentration section to the dewatering section.
    3. The rotation of the screw press shaft not only pushes the sludge from the concentration section to the dewatering section, but also continuously drives the moving ring to clean the filtering gap to prevent clogging.
    4. After gravity concentration in the concentration section, sludge is transported to the dewatering section. In the process of advance, with the gradual decrease of filtering gap and screw pitch, and the blocking effect of back pressure plate, a great internal pressure is generated; leading the volume is constantly reduced, so as to achieve the purpose of full dewatering.
    5. Dewatering screw press is generally applicable to sludge concentration of 2000mg / L-50000mg / L

    Comparison of Different Types Sludge Dewatering Machine

    Type Screw Press Filter Press Decanter Centrifuge
    Images Dewatering Screw Press22 Dewatering Screw Press33 Dewatering Screw Press11
    Energy Consumption Low Moderate High
    Labor Intensity Low High Low
    Footprint Low High Low
    Automation Degree High Low High
    Investment Low High High
    Sludge Moisture Content High Low Moderate
    Operating Cost Low Moderate Moderate
    Capacity Low High High
    Capacity for Oily Sludge Moderate Low High


    GN has a complete range of sludge dewatering equipment. Clients can choose the best sludge dewatering equipment according to different sewage treatment targets and investment budgets. In addition, GN can also provide integrated mobile sludge dewatering solution according to customer requirements.

    Dewatering Screw Press44


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