China Grit-Water Separator: Shaftless Screw Style Desanding Equipment for Grit Basin in Urban Sewage Treatment
The spiral sand-water separator is designed for grit tanks in sewage treatment plants. It is an integrated system for separating and lifting inorganic grit from sewage, capable of effectively removing particles with a diameter ≥0.2mm. With high separation efficiency, this equipment features a shaftless spiral design and operates without water bearings. Its lightweight, compact structure, reliable performance, and easy installation make it an ideal solution for sand-water separation.
The LSF sand-water separator is suitable for grit removal in grit tanks of urban sewage treatment plants. It is commonly paired with cyclone grit degreasing tanks or bridge-type sand suction machines to enhance the separation of sand-water mixtures.
| Model Number / Parameters | LSF-260 | LSF-300 | LSF-350 | LSF-400 |
|---|---|---|---|---|
| Spiral nominal diameter D (mm) | 260 | 300 | 350 | 400 |
| Screw diameter Φ (mm) | 235 | 285 | 320 | 385 |
| Handling capacity Q (L/s) | 5~12 | 12~20 | 20~27 | 27~35 |
| Installation angle α (°) | 25 | |||
| Revolution speed of screw n (r/min) | ≈4.8 | |||
| Motor power N (KW) | 0.37 | 0.55 | 0.75 | |
| Recovery rate (particle size ≥0.2mm) | ≥96% | |||
| Moisture content after separation (%) | <65 | |||
| Installation dimensions (mm) | ||||
| Φ | 220 | 270 | 320 | 390 |
| B | 260 | 310 | 345 | 410 |
| B1 | 710 | |||
| B2 | 1200 | 1360 | 1500 | 1800 |
| B3 | B2+80 | |||
| DN1 | 100 | 150 | 200 | 250 |
| DN2 | 150 | 200 | 250 | 300 |
| L | 2800 | 3000 | 3200 | 3400 |
| L1 | 3840 | 4380 | 5760 | 6150 |
| L2 | 2800 | 2800 | 3800 | 3800 |
| H | 1550 | 1750 | 2400 | 2550 |
| H1 | 1600 | 1700 | 2150 | 2150 |
Efficient Drive System: Equipped with a shaft-mounted parallel shaft helical gear reducer, ensuring compact design, stable operation, and high safety.
High Recovery Rate: Achieves a recovery rate of ≥96% for particles larger than 0.2mm.
Wear-Resistant Lining: The U-shaped groove features a replaceable inner lining with excellent wear resistance and long service life.
Fully Enclosed Design: Provides a clean operating environment and eliminates the need for embedded parts. The frame is securely fixed using expansion bolts.
Flexible Control: Can be integrated with auxiliary equipment for centralized control or operated independently with a local control box.
The equipment utilizes a shaftless spiral mechanism. The sand-water mixture is fed into the top of the separator, where grit settles by gravity in the separation tank. The shaftless spiral rotates at a 25° angle, gradually conveying the grit along the U-shaped groove to the discharge outlet, where it falls into a collection container for removal. The separated water is discharged through the overflow weir, ensuring improved operational efficiency and convenient transport of dewatered grit.
Packing and Delivery
1. Waterproof packing with the international export standard by 20ft, 40ft, 40hp container. Equipment Fittings, Electric Motor and Power Cabinet will be packed in Wooden Case or Iron Box. Other Equipment will be packed by Color-Stripes Plastic Cloth.
2. The whole plant machinery size are large as normal, so we will use Waterproof cloth to pack all of them. The motor, gear box or other easily damaged parts, we will put them into box. We have a professional shipping department, they will try their best to save your container quantity.
Why Choose Us?
1. Longdai has more than 10 years of experience in wastewater and sludge treatment.
2. We introduce German technology, thus our product is much better than other Chinese manufacturers.
3. We only use the best parts from best supplier.
4. We have our own R&D center and complete manufacture system.
About Us
Located in Yixing, an advanced and beautiful city of Jiangsu Province, China, Longdai Co., Ltd is a processing equipment supplier of petrochemical industry specialized in environmental processing &integrating independent research and development, design, general contracting, environmental protection equipment manufacturing, and relevant material supply.
FAQ:
Q: Are You Trading Company Or Manufacture?
A: We Are Both Manufacture And Trading Company. We Have Over 30 Years' Professional Experience As a Waste Water Treatment Equipment Manufacturer And Engineering Service Enterprise.
Q : What Are Your Main Products?
A:Keywords :Sludge Dewatering Machine Equipment, Screw Type Sludge Dewatering Press Sludge Screw Press, Dewatering Sludge Machine Screw Press ,Sewage Treatment Equipment ,Sludge Treatment Plant,Screw Press Sludge Dewatering ,Dewatering Sludge,Dewatering Machine For Sludge, Dewatering Sludge Machine Screw Press, Rotary Drum Bar Screens, Equipment DAF, DAF Price ,Dissolved Air Flotation System Price, Sludge Shaftless Screw Conveyor,Chemical Dosing Device ,MBBR Price,MBBR Media,Disc Diffuser, Polymer Preparation Chemical Dosing System, and other customized machines.
Q: How Can I Find The Suitable Model?
A: Please Provide Flow Rate, Solids Content And Sludge Type, or directly contact us by the clicking the “contact” icon. We Can Assist You In Model Selection.
