Inclined tube settler media Guide

The inclined tube settler media of the sedimentation tank is a common water treatment material, which is widely used in various sedimentation and sand removal processes. It is usually made of materials such as polypropylene, in the shape of an inclined tube or inclined plate, and installed in the sedimentation tank.

The role of the inclined tube settler media of the sedimentation tank

Increase the sedimentation area: The surface area of ​​the inclined tube settler media is much larger than the area of ​​the flat sedimentation tank, which greatly increases the chance of suspended matter contacting the inclined tube during the flow process, thereby improving the sedimentation efficiency.

Reduce the water flow velocity: The inclined tube settler media can effectively reduce the water flow velocity, so that the particles have sufficient time to settle down.

Shorten the sedimentation time: Due to the increase in the sedimentation area and the decrease in the water flow velocity, the sedimentation time is greatly shortened, and the treatment capacity of the sedimentation tank is improved.

Improve the sand removal effect: The inclined tube settler media can effectively intercept and retain larger particles, such as sand particles, thereby improving the sand removal effect.

Advantages of the inclined tube settler media of the sedimentation tank

Simple structure and easy installation: The inclined tube settler media has a simple structure and is easy to install, without the need for complex construction technology.

Small footprint: Compared with traditional sedimentation tanks, sedimentation tanks with inclined tube settler medias occupy a small area, saving land resources.

Low operating cost: The material cost of the inclined tube settler media is low, the maintenance cost is low, and the operating cost is low.

Corrosion resistance and long service life: The inclined tube settler media is generally made of corrosion-resistant materials and has a long service life.

Application of inclined tube settler medias in sedimentation tanks

The inclined tube settler medias in sedimentation tanks are widely used in the following fields:

Municipal sewage treatment: Used for primary sedimentation, secondary sedimentation and other processes.

Industrial wastewater treatment: Used for sedimentation treatment of various industrial wastewaters.

Water plant: Used for clarification treatment of raw water.

Selection of inclined tube settler medias

Material: Commonly used corrosion-resistant materials such as PP (polypropylene) and PVC, select the appropriate material according to the water quality.

Specifications: Select the appropriate pipe diameter, length and inclination according to the water treatment requirements.

Quantity: Calculate the required filler quantity according to the size and processing capacity of the sedimentation tank.

Detailed steps for calculating the inclined tube (inclined plate) sedimentation tank

Determine the design flow: Determine the design flow according to the scale and process flow of the sewage treatment plant.

Determine the sedimentation time: Determine the sedimentation time according to the sewage quality and treatment requirements, generally 2-3 hours.

Calculate the volume of the sedimentation tank: Volume of the sedimentation tank = Design flow × sedimentation time.

Determine the plane shape of the sedimentation tank: Common shapes include rectangle, circle, etc., which are selected according to site conditions.

Calculate the area of ​​the sedimentation tank: Area of ​​the sedimentation tank = Volume of the sedimentation tank ÷ Water depth.

Determine the installation area of ​​the inclined tube settler media: The installation area of ​​the inclined tube settler media generally accounts for 60%-70% of the total area of ​​the sedimentation tank.

Calculate the number of honeycomb inclined tube settler medias: Calculate according to the specifications, installation area and inclination of the inclined tube settler media.

2. Factors affecting the number of inclined tube settler medias

Sedimentation tank size: The larger the sedimentation tank, the more fillers are required.

Sewage water quality: The higher the concentration of suspended solids in sewage, the more fillers are required.

Treatment requirements: The higher the treatment effect requirements, the more fillers are required.

Specifications of inclined tube settler medias: The diameter, length and inclination of the inclined tube will affect the number of fillers.

3. Factors to consider in selecting the specifications of honeycomb inclined tube settler medias

Sewage particle size: The finer the particles, the smaller the pore size.

Treatment effect: If the treatment effect is high, a smaller pore size can be selected.

Hydraulic conditions: Consider water flow velocity and head loss.

Economic efficiency: Comprehensively consider treatment effect and cost.

4. Precautions for installation of inclined tube settler media

Inclination: Strictly control the inclination, generally 60°.

Fixation: Firmly fix to prevent movement.

Spacing: Ensure sufficient spacing to prevent blockage.

5. Special considerations for grease trap design

Floating oil layer thickness: Determine the floating oil layer thickness based on grease concentration and flow rate.

Residence time: The oil-water separation time is generally longer than the sedimentation time.

Oil drainage method: Design a reasonable oil drainage method to prevent secondary grease pollution.

6. Other influencing factors

Water temperature: Water temperature affects the settling rate of sludge.

pH value: pH value affects the effect of coagulant.

Coagulant dosage: The amount of coagulant affects the formation of flocs.

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