Product Overview
The valveless filter is a highly efficient, energy-saving and fully automatic filtration device independently developed and produced by Guangdong Hanluo Environmental Protection Technology Co., LTD. It does not require external valves or complex control systems. It utilizes the siphon principle of hydraulics to achieve automatic filtration, automatic backwashing, and automatic resumption of operation. It is an ideal choice for fields such as surface water purification, side filtration of industrial circulating water, and pretreatment of reclaimed water reuse.
I. Core Working Principle
The core of valveless filters lies in their "valveless" design. Its operation process is fully automated
Filtration stage: The water to be treated passes through the high-level influent distribution tank and flows from top to bottom through the filter layer (such as quartz sand, anthracite), where impurities are retained. The clear water then enters the bottom clear water tank through the connecting pipe for storage. As the filtration proceeds, the resistance of the filter layer gradually increases.
Siphon backwashing stage: When the resistance of the filter layer causes the water level in the siphon tube to rise to the set height (i.e., the head loss reaches the predetermined value, usually 1.5-1.8 meters), the siphon auxiliary tube will trigger the main siphon tube to form a siphon. At this point, the clear water in the water tank is flushed from bottom to top through the connecting pipe in the opposite direction to the filter layer. The powerful water flow lifts up the trapped impurities and discharges them into the sewage well through the siphon pipe. The flushing process does not require external power.
Resumption of operation stage: When the water level in the clear water tank drops to a specific position, the siphon is automatically disrupted and backwashing stops. The system immediately and automatically resumes the filtering state and enters the next operation cycle.
Ii. Main Product Features and Advantages
Fully automatic operation, no need for on-site supervision: The entire filtration, backwashing and recovery process does not require any valve switching, electric drive or manual intervention, saving a significant amount of labor costs and electricity fees.
Energy-saving and highly efficient: All operations are completed by utilizing the water pressure and water level difference of the system itself, with extremely low operating energy consumption.
Compact structure and small floor space: The entire structure is made of steel or concrete, with high integration, which is convenient for on-site installation and layout.
Stable and reliable operation: Mechanical hydraulic control, low failure rate, long service life, and simple maintenance.
Excellent treatment effect: It adopts multi-layer filter media (customizable), with strong dirt interception capacity. The effluent turbidity can be stably maintained at less than 3 NTU, or even lower.
Strong resistance to shock loads: Suitable for situations where the quality of the raw water fluctuates to some extent.
High-flow backwashing: It features high backwashing intensity, short duration, and low water consumption (typically 1% to 3% of the cycle water production), ensuring thorough regeneration of the filter material.
Iii. Typical Application Fields
Surface water purification: Pretreatment of water from reservoirs, rivers and lakes for industrial or domestic use.
Industrial circulating cooling water system: As a side filtration device, it effectively removes suspended solids, controls turbidity, and increases the concentration ratio.
Pretreatment for reclaimed water reuse: Conduct deep filtration on the effluent after biochemical treatment.
Steel, chemical, power and other industries: pre-treatment of raw water or advanced treatment of wastewater.
Circulating water treatment for swimming pools and landscape water bodies.
Iv. Services and Commitments of Guangdong Hanluo
Professional customization: Provide personalized design solutions based on the customer's raw water quality, quantity and site conditions.
Quality Assurance: The main equipment is made of high-quality steel, and the inner wall anti-corrosion process is exquisite to ensure long-term corrosion resistance of the equipment.
Turnkey project: Providing full-process services from design, manufacturing, installation, commissioning to technical training.
Lifetime maintenance: Establish a complete customer file and provide timely after-sales support and spare parts services.
Valveless filters, with their outstanding economy, stability and maintenance-free nature, have become the preferred choice for many circulating water systems and pretreatment units. By choosing Guangdong Hanluo, you are not only selecting a piece of equipment, but also a worry-free, energy-saving and reliable long-term water quality solution.
