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Granular carrier for wastewater processing, preparation method thereof and preparation device thereof

A wastewater treatment and preparation device technology, which is applied in the field of water treatment, can solve the problems of difficult microbial attachment and growth, loss, etc., and achieve the effects of good microbial adsorption, fast processing speed, and good fluidity

Inactive Publication Date: 2012-05-23
杨国栋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of the prepared carrier is balanced, and there are disadvantages that various types of microorganisms are difficult to attach and grow. If the specific gravity is below 1, it will be suspended if it is put into the storm pool, and there is a defect of loss with the flow of water.

Method used

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  • Granular carrier for wastewater processing, preparation method thereof and preparation device thereof
  • Granular carrier for wastewater processing, preparation method thereof and preparation device thereof
  • Granular carrier for wastewater processing, preparation method thereof and preparation device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: the preparation method of the granular carrier that is used for waste water treatment (the used device of preparation process sees figure 2 ): take by weight 60 parts of waste polyethylene, 20 parts of zeolite and 10 parts of powdered activated carbon and put them into the agitator 1, stir and mix for 30 minutes at a speed of 80 rpm, the mixture enters the melting extruder 4, and is heated Heater 2 is heated to 250°C at 0.2kgf / cm 2 Melt and extrude under pressure, and the melted and extruded mixture enters the extrusion molding machine 7, is heated to 280°C by the heater 2, and melts at 0.5kgf / cm 2 Press out the molding under the pressure, and then use the former 6 to cut it into a diameter of 5 ~ 10mm (if the diameter is less than 5mm, it is easy to block the micropores installed in the intermittent gas storm pool and the partition of the sediment, resulting in insufficient flow to the storm gas pool, and the gas storm There will be sludge overflowing f...

Embodiment 2

[0029] Embodiment 2: Take by weight 55 parts of waste polyethylene, 30 parts of zeolite and 15 parts of powdered activated carbon and put them into agitator 1, stir and mix at a speed of 75 rpm for 60 minutes, and the mixture enters the melting extruder 4, Heated to 200°C by heater 2, at 0.4kgf / cm 2 Melt and extrude under pressure, and the melted and extruded mixture enters the extruder 7, is heated to 230°C by the heater 2, and melts at 0.4kgf / cm 2 Extrude molding under the pressure of pressure, then cut into the granular shape of diameter 8mm with shaper 6. In order to increase the surface area of ​​the carrier, water at 16° C. is sprayed from the water injector 5 during cutting to rapidly cool the formed carrier to prevent it from sticking to each other. Then the carrier mixed with water is transferred to the high-speed dehydrator 9 through the carrier delivery pipe 8, and the water is removed at a rotating speed of 1600rpm. The dehydrated carrier is transferred to the me...

Embodiment 3

[0031] Embodiment 3: take by weight 70 parts of waste polyethylene, 15 parts of zeolite and 5 parts of powdered activated carbon and put them into the agitator 1, stir and mix for 45 minutes at a speed of 78 rpm, and the mixture enters the melting extruder 4, Heated to 230°C by heater 2, at 0.3kgf / cm 2 It is melted and extruded under pressure, and the melted and extruded mixture enters the extrusion molding machine 7, is heated to 250°C by the heater 2, and melts at 0.3kgf / cm 2 Extrude molding under the pressure of pressure, then cut into the granular shape of diameter 10mm with shaper 6. In order to increase the surface area of ​​the carrier, water at 14° C. is sprayed from the water injector 5 during cutting to rapidly cool the formed carrier to prevent it from sticking to each other. Then the carrier mixed with water is transferred to the high-speed dehydrator 9 through the carrier delivery pipe 8, and the water is removed at a rotating speed of 1550rpm. The dehydrated ca...

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Abstract

The invention discloses a granular carrier for wastewater processing, a preparation method thereof and a preparation device thereof. The carrier is prepared from 50-70 parts by weight of waste polyethylene, 10-30 parts by weight of permutite and 5-15 parts of powdery active carbon. Compared with the prior art, the method of the invention, which treats the highly economic waste polyethylene as a main raw material, allows the waste polyethylene processing cost to be reduced, pollution problems caused by the waste polyethylene to be solved, the carrier of various sizes to be prepared and the large batch production to be realized, and the obtained granular carrier which has the advantages of large surface area and good adsorption to microbes allows various microbes to be effectively adsorbed and effectively grow, has good fluidity with the water flow and has no stagnation phenomena. According to the granular carrier of the invention, the high speed wastewater processing becomes possible; and compared with present wastewater processing methods, the granular carrier has the advantages of rapid processing speed, high efficiency and good effect. The carrier of the invention is also suitable for processing high concentration wastewater containing nutritive salts and difficult decomposition organic matters, domestic sewage, municipal sewage and the like.

Description

Technical field: [0001] The invention relates to a granular carrier capable of absorbing and growing microbial bacteria used in biological treatment of wastewater, a preparation method and a device thereof, and belongs to the technical field of water treatment. Background technique: [0002] The phenomenon of eutrophication in closed water areas such as lakes and coasts that has become a social problem in recent years is caused by the excessive inflow of nitrogen and phosphorus compounds. Phosphorus and nitrogen compounds in water are pollutants and are the main cause of loss of water resource value. , is also a necessary nutrient for algae reproduction, which can make the water quality worse. When untreated water containing nitrogen and phosphorus flows into rivers and seas, various side effects will occur, especially in summer. Among them, green algae and red algae, which are fatal to fish and shellfish, are caused by excessive nitrogen and phosphorus inflow. Moreover, af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/28
CPCB29B7/007B29B7/7466B29B7/748B29B7/826B29B9/06B29B9/12
Inventor 杨国栋
Owner 杨国栋
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