♦ Performance


♦ Specification: (size unit:mm)

【For reference only】

Structure of Slanting pipe

The Bottom of Tank

♦ Accelerate settling and reduce tank footprint 70-80%.

Figure A: In a conventional sedimentation basin, suspended particles must settle completely within the hydraulic retention time as the water flows through the basin. The sedimentation efficiency is primarily influenced by the basin depth and the surface overflow rate.

Figure B: After installing Slanting Pipe, the sedimentation zone is divided into multiple shallow settling units. This reduces the settling distance from H to h, shortens the settling path, and significantly improves sedimentation efficiency.

Each inclined tube can be regarded as an independent sedimentation unit. As a result, the effective settling area is increased by approximately H/h times. Under the same influent water quality conditions, this substantially enhances the treatment capacity of the sedimentation basin.

A typical Slanting Pipe module has a height of approximately 520 mm, while the effective water depth of a conventional sedimentation basin is about 2.5 m. Therefore, the H/h ratio is approximately 5, resulting in an effective settling area increase of about five times. This principle is consistent with the shallow-depth sedimentation theory .

♦ Rectification

The Slanting Pipe design divides the flow into numerous narrow channels, allowing water to flow under stable laminar flow conditions. This minimizes turbulence and enables suspended solids to settle more efficiently, achieving sedimentation performance close to the ideal settling condition.

Flow characteristics are commonly evaluated using the Reynolds number (Re). Laminar flow occurs when Re is below 2,000, while the Reynolds number inside Slanting Pipe is typically less than 100. This exceptionally low Reynolds number provides highly stable hydraulic conditions, improving particle settling efficiency and enhancing the overall performance of the sedimentation process.

♦ Structure

The Slantinf Pipe is constructed by connecting tubes inclined at 60° to the horizontal. Adjacent tubes are arranged in opposite directions to form a cross (crisscross) configuration, creating a rigid and stable module. Each module is manufactured in a standard rectangular shape with a tube diameter of 50 mm, providing a large effective settling area while ensuring excellent structural strength and easy installation.
 

♦ Feature
1. Superior Water Clarification

Due to the “flow rectification effect” and “secondary flocculation effect,” inclined tube settlers can effectively capture flocs that are difficult to settle. Among various sedimentation systems, water treated with inclined tube settlers achieves superior water quality and can also reduce coagulant consumption.

2. High Strength

Although constructed with ABS sheets less than 1 mm in thickness, the composite structural framework design provides both lightweight characteristics and excellent structural strength. Actual testing has confirmed that it can withstand a load of over 500 kg.

3. Easy Installation

The installation process is simple and convenient. During installation, the Slanting Pipe only need to be placed directly onto the support frame.

4. Easy Maintenance

The Slanting Pipe module consists of a single-layer structure with no complicated passages, and the smooth tube walls make maintenance and cleaning very convenient.
 

5. Excellent Appearance

Since there are no overhead support beams or other obstructions, the water quality can be easily observed from the surface of the sedimentation tank. In addition, the overall appearance is clean and aesthetically pleasing.

6. Compatible with Various Sludge Collection Systems

Since there are no obstructions at the bottom of the tank, the sludge collection direction can be freely selected. Various sludge collection systems, such as sludge collectors, submerged sludge scrapers, and conveyor systems, can be installed.

In addition, the space beneath the inclined tubes is wide and spacious, making inspection and maintenance easy and convenient.

7. Resistant to External Factors

Since sedimentation takes place inside the Slanting Pipe, the process is not affected by external factors such as high-density currents. In addition, because the Slanting Pipe are installed underwater, they are not subject to damage caused by snow accumulation or heavy snowfall.

8. Applicable to Sedimentation Tanks of Any Shape

Slanting Pipe can be installed in various types of sedimentation tanks, including horizontal-flow sedimentation tanks, circular tanks, and rectangular tanks. 

♦ Slanting Pipe Reference Projects -Taiwan

※The above list includes representative reference projects only.

♦ China

※The above list includes selected representative projects and end users for reference only.