Static Screen for Wastewater Solid-Liquid Separation

Short Description:

The Static Screen is a compact, energy-free separation unit designed to filter suspended solids, floating matter, sediments, and other solid or colloidal substances from sewage and industrial wastewater.

It features a wedge wire welded stainless steel screen, which can be formed into an arc-shaped or flat filter surface. Wastewater is evenly distributed onto the inclined screen via an overflow weir. Solids are intercepted on the screen surface, while filtered water passes through the screen gaps. Meanwhile, the intercepted solids slide down to the lower end of the sieve plate under hydraulic force and are discharged, achieving efficient solid-liquid separation.

Using a Static Screen effectively reduces suspended solids (SS) and lowers the processing load for subsequent treatment steps. It can also recover valuable materials in industrial processes.

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Product Video

Watch how our Static Screen works for effective solid-liquid separation.

Applications

The Static Screen is widely used in various industries for wastewater pretreatment and resource recovery:

1. Papermaking, pulp & fiber recovery — recycling fibers and removing solids.
2. Slaughterhouses, tanneries — removing solids like fur, grease, pouches, and waste.
3. Food & beverage processing — treating wastewater in sugar, wine, starch, beer, and malt production by removing plant fibers, hulls, scales, etc.
4. Municipal sewage & small water supply — pretreatment for domestic or community wastewater.
5. River dredging & sludge treatment — solid-liquid separation in environmental projects.
6. Textile, petrochemical, printing & dyeing — recovery and pretreatment to remove suspended solids.

Key Features

✅ High-Quality Screen Plates — Made from seam-welded stainless steel with high mechanical strength, non-deforming and crack-resistant.
✅ Energy-Saving Operation — Utilizes gravity flow, requiring no power consumption.
✅ Low Maintenance — Periodic manual flushing keeps screen gaps clear and efficient.
✅ Model Selection — The unit does not tolerate shock loads; always select a model with capacity greater than the peak flow rate.

Working Principle

The Static Screen’s core component is an arc-shaped or flat wedge wire screen surface made of stainless steel rods. Wastewater flows evenly over the inclined screen through an overflow weir. Thanks to the smooth surface and wider gaps on the back, drainage is fast and clogging is minimized. Solids are retained and pushed downwards by hydraulic force for discharge, while clean water passes through, achieving reliable solid-liquid separation.

Typical Industries

1. Paper mills — fiber recovery, suspended solids removal.
2. Tanneries — removal of fur, grease, and other residues.
3. Slaughterhouses — solids such as pouches, fur, grease, and waste.
4. Municipal wastewater — domestic sewage pretreatment.
5. Starch, alcohol, sugar, beer, and malt factories — removal of plant shells, fiber, malt skins.
6. Pharmaceutical & food processing — separation of various waste residues.
7. Poultry & livestock farms — removal of animal hair, manure, and debris.
8. Fish & meat processing — offal, scales, minced meat, grease removal.
9. Other applications — textile mills, chemical plants, plastic factories, large workshops, hotels, and residential communities.

Technical Parameters

Model & Description		HLSS-500	HLSS-1000	HLSS-1200	HLSS-1500	HLSS-1800	HLSS-2000	HLSS-2400
Screen Width (mm)		500	1000	1200	1500	1800	2000	2400
Screen Length (mm)		1800	1800	1800	1800	1800	1800	1800
Device Width (mm)		640	1140	1340	1640	1940	2140	2540
Inlet DN		80	100	150	150	200	200	250
Outlet DN		100	125	200	200	250	250	300
Capacity @0.3mm Slot (m³/h)	Poultry	7.5	12	15	18	22.5	27	30
Capacity @0.5mm Slot (m³/h)	Poultry	12.5	20	25	30	37.5	45	50
Capacity @0.5mm Slot (m³/h)	Muncipal	35	56	70	84	105	126	140
Capacity @1.0mm Slot (m³/h)	Poultry	25	40	50	60	75	90	100
Capacity @1.0mm Slot (m³/h)	Muncipal	60	96	120	144	180	216	240
Capacity @2.0mm Slot (m³/h)	Muncipal	90	144	180	216	270	324	360