LFQ Series Vertical Sand Filter Flow Rate 4-190 m³/h for Water Treatment
Product Introduction
Shallow sand filters utilize advanced deep filtration technology, using high-quality quartz sand as the filter media. They are specifically designed to remove suspended solids, particulate impurities, and organic matter from water, and are widely used in industrial circulating water, agricultural irrigation, municipal water supply, and wastewater reuse.
Core Advantages
- High Efficiency Filtration: Wide flow range per unit; can be connected in parallel to meet the needs of systems of different sizes.
- Automatic Backwashing: Equipped with a PLC intelligent control system, enabling timed or differential pressure automatic backwashing without manual intervention.
- Robust Structure: The housing is made of Q235 carbon steel, with a maximum working pressure of 10 bar; corrosion resistant and long service life.
- Flexible Installation: Modular design, small footprint, supports multiple tanks operating in parallel; backwashing does not affect the continuous water supply of the system.
Model Table
| Model | Housing Size (mm) | Housing Thickness (mm) | Inlet/Outlet | Single Housing Flow Rate (m3/hr) | Pressure (bar) | Housing Material | Sand | Control Cabinet |
| LFQ-400 | Φ400*1550 | 6 | DN50 | 4 | 10 | Q235 | Quartz Sand | Domestic PLC control cabinet text screen |
| LFQ-500 | Φ500*1550 | 6 | DN50 | 6 | 10 | Q235 | ||
| LFQ-600 | φ600*1550 | 6 | DN50 | 10 | 10 | Q235 | ||
| LFQ-800 | φ800*1650 | 6 | DN50 | 25 | 10 | Q235 | ||
| LFQ-1000 | φ1000*1750 | 6 | DN80 | 35 | 10 | Q235 | ||
| LFQ-1200 | φ1200*1950 | 6 | DN80 | 50 | 10 | Q235 | ||
| LFQ-1400 | φ1400*2150 | 8 | DN80 | 60 | 10 | Q235 | ||
| LFQ-1600 | φ1600*2200 | 8 | DN100 | 80 | 10 | Q235 | ||
| LFQ-1800 | φ1800*2250 | 8 | DN100 | 100 | 10 | Q235 | ||
| LFQ-2000 | φ2000*2300 | 10 | DN125 | 120 | 10 | Q235 | ||
| LFQ-2200 | φ2200*2300 | 10 | DN125 | 160 | 10 | Q235 | ||
| LFQ-2400 | φ2400*2300 | 10 | DN150 | 190 | 10 | Q235 | ||
| Notes: 1) When only one filter housing, the filter cannot be backwashed. It can be backwashed only when two filter housings or more in parallel. 2) Clients can choose different quantities of parallel filter housings according to their flow rate requirement. 3) Working temperature: 10-80℃. | ||||||||
Application areas
Industrial circulating cooling water systems – remove suspended solids and prevent scale buildup and clogging in heat exchangers
Power plant cooling water pretreatment – reduce turbidity and protect downstream equipment
Steel plant turbid circulating water filtration – recycle and reuse wastewater from rolling mills and continuous casting
Chemical plant process water purification – remove impurities and ensure production process stability
Textile dyeing and printing wastewater reuse – filter fibers and particulate matter from dyeing wastewater
Paper mill white water recovery – filter pulp fibers and improve water recycling rate
Electronics industry ultrapure water pretreatment – protect reverse osmosis membranes and extend their service life
Food and beverage processing water – remove suspended impurities from raw water
Pharmaceutical plant process water pretreatment – ensure stable influent water quality
Automotive manufacturing painting line pretreatment – filter cleaning water to ensure painting quality
Agricultural drip irrigation systems – filter sediment from irrigation water to prevent dripper clogging
Sprinkler system pre-filtration – protect sprinklers and extend equipment life
Greenhouse planting water supply – provide clean irrigation water
Orchard fertigation system – filter insoluble substances from fertilizer solutions
