The honeycomb inclined tube packing is a high-efficiency solid-liquid separation device developed by our company based on the "shallow sedimentation" theory. Composed of densely packed hexagonal honeycomb inclined tube units, this product significantly increases sedimentation area and shortens particle settling distance, thereby enhancing the treatment capacity and effluent quality of sedimentation or clarification tanks. It serves as a widely used modular component in water treatment sedimentation processes.
- Structure and Working Principle
- Core structural composition
The product features a modular assembly structure, with the core unit being a hexagonal honeycomb inclined tube.
- Straight-tube monomer: A parallel tube bundle with a regular hexagonal cross-section, formed by stretching or welding materials such as polypropylene (PP), polyvinyl chloride (PVC), or fiber-reinforced plastic (FRP) through specific processes. It serves as the physical carrier for shallow sedimentation.
- Assembly module: A large number of inclined tube units are arranged in parallel at a specific inclination angle (typically 60°) and fixed to form standardized rectangular or fan-shaped panels. The units are interconnected through welding or bonding to create a stable honeycomb-like integrated structure.
- Support frame system: Typically constructed from corrosion-resistant carbon steel (e.g., hot-dip galvanized) or stainless steel, this framework supports and secures inclined tube modules within the pool, ensuring stable installation angles and positions.
- Working Principle
The water enters the area filled with inclined tube packing and is distributed into countless parallel small honeycomb pipes.
- Settling process: According to the principle of "shallow sedimentation," suspended solid particles, under the influence of gravity, only need to settle a very short vertical distance (i.e., the inner circle diameter of a honeycomb tube) to reach the lower tube wall. Subsequently, the particles slide down along the inclined tube wall to the sludge zone at the bottom of the tank.
- Separation process: The clarified water continues to flow upward through the inclined tubes and is ultimately discharged into the upper collection zone. This design effectively divides the sedimentation zone into multiple independent shallow sedimentation units, thereby potentially significantly increasing the surface load of the sedimentation tank.
- Core technical features
- The efficiency of sedimentation is significantly improved: By applying the principle of "shallow sedimentation", the sedimentation distance is extremely short. This allows the theoretical surface load of a sedimentation tank equipped with inclined tube packing to reach several times that of a conventional horizontal flow sedimentation tank under the same area, or to reduce the tank capacity while ensuring the quality of the effluent.
- The hydraulic conditions are relatively optimized: the honeycomb-like dense tube bundle helps maintain laminar flow, reduces turbulence and short-circuit effects that interfere with sedimentation, and creates a relatively stable sedimentation environment.
- Easy installation and strong adaptability: Featuring a standard modular design, it can be directly assembled and installed in existing sedimentation tanks or newly constructed tanks, facilitating construction. For renovation projects, it represents one of the feasible solutions to enhance the capacity of existing facilities.
- Stable material with corrosion resistance: Primarily made of acid-and alkali-resistant, aging-resistant plastics such as PP and PVC, these materials maintain chemical stability in standard water treatment environments and offer a relatively long service life.
- Regular sludge removal is essential: Effective sedimentation requires rapid sludge accumulation at the tank bottom, necessitating a reliable and timely sludge removal system to prevent operational performance degradation caused by sludge buildup.
- Main technical parameters
|
Parameter item
|
Description / Reference range example
|
|
intrinsic diameter of a right circular segment
|
Common specifications: Φ35mm, Φ50mm, Φ80mm
|
|
Standard module size
|
Common dimensions include: 1000×1000mm and 1000×2000mm (length×width), with the thickness (length of the inclined tube) typically being 1000mm.
|
|
angle of inclination
|
Typically 60°
|
|
theoretical sedimentation distance
|
The diameter of the inscribed circle of the selected inclined tube
|
|
applicable surface load
|
Depending on the raw water quality, the design reference range is typically 3.0 – 10.0 m³/(m²·h).
|
|
Common materials
|
Polypropylene (PP), Polyvinyl Chloride (PVC), Fiberglass Reinforced Plastic (FRP)
|
|
applicable temperature
|
PP material is generally suitable for liquids with temperatures not exceeding 100°C (long-term use recommended ≤80°C).
|
- Typical Application Fields
This filler is widely used in various water treatment scenarios requiring rapid solid-liquid separation.
- Water treatment: used in waterworks and industrial water pretreatment for removing turbidity in sedimentation tank and clarifier.
- sewage disposal ：
- Primary sedimentation tank for municipal and industrial wastewater treatment.
- The secondary sedimentation tank after biochemical treatment is used for the separation of activated sludge and water.
- The solid-liquid separation tank after the chemical coagulation and sedimentation process.
- Other applications include pre-sedimentation of high-suspended solids wastewater such as mine water, coal washing effluent, and river sediment, as well as physical filtration in aquaculture recirculating water systems.
en
