Unround ceramsite and preparation system thereof

Abstract

The invention relates to an unround ceramsite and a preparation system thereof. The ceramsite is shaped as an unround ball, such as a regular triangular prism or a regular quadrangular prism, and a rough surface is preferred for the surface of the ceramsite. The preparation system comprises a spiral extruder and a cutting mechanism; a discharging port of the spiral extruder is provided with a forming disc which is provided with a plurality of unround forming through holes; the cutting mechanism is provided with a cutter which is matched with the forming disc so as to form a cutting pair together for cutting the materials extruded from the forming through hole; when the materials are extruded out of the forming disc, the blade cuts off strip-shaped materials along the surface of the formingdisc to form particles; and the particles form hard ceramsite after being sintered or dried. The ceramsite greatly increases the contacting and functioning opportunity of pollutants in water with active sludge, has obvious positive function for improving the reaction efficiency and is mainly used for water treatment.

Description

technical field [0001] The invention relates to a non-round ceramsite and a preparation system thereof, which are mainly used in water treatment systems and belong to the technical field of environmental protection. Background technique [0002] Ceramsite is a common material in water treatment and can be used in various aerobic and anaerobic biofilm treatment systems. Activated sludge, which plays a major role in biological treatment, adheres to the surface of ceramsite or the void surface inside ceramsite , thereby increasing the biological density in the treatment system, improving the performance of activated sludge, and greatly improving the treatment efficiency and treatment effect, although ceramsite can use a variety of different raw materials and can pass through a variety of different Process preparation, but there is one commonality among them, which is to make the wet raw material into a spherical shape through a molding device, and then perform high-temperature ...

AI Technical Summary

Problems solved by technology

[0002] Ceramsite is a common material in water treatment and can be used in various aerobic and anaerobic biofilm treatment systems. Activated sludge, which plays a major role in biological treatment, adheres to the surface of ceramsite or the void surface inside ceramsite , thereby increasing the biological density in the treatment system, improving the performance of activated sludge, and greatly improving the treatment efficiency and treatment effect, although ceramsite can use a variety of different raw materials and can pass through a variety of different Process preparation, but there is one commonality among them, which is to make the wet raw material into a spherical shape through a molding device, and then perform high-temperature drying or high-temperature sintering according to the nature of the raw material to form a solid ball with a certain strength. One of this spherical ceramsite The important defect is that after the ceramsite is piled up, due to the spherical structure of the ceramsite, the adjacent spherical ceramsite is basically in point contact, and there is no gap or the gap is too small at the contact point, forming a "water flow" that cannot pass through. Dead angle of water flow", and the non-contact area is a relatively large size in all directions, forming a "dead angle of reaction" where the water flow basically does not touch the activated sludge attached to the surface of the ceramsite, and this "dead angle of reaction" is interconnected , the resistance to water flow is small, so in a considerable part of the time, the water flow basically flows in the space that does not touch the activated sludge on the surface of the ceramsite, which greatly restricts the biofilm function.

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