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Filter material for dephosphorizing wastewater and manufacturing method thereof

A manufacturing method and filter material technology, applied in separation methods, chemical instruments and methods, solid waste removal, etc., can solve the problems of high cost, achieve the effects of reducing production costs, simplifying the preparation process, and realizing resource utilization

Inactive Publication Date: 2011-09-07
UNIV OF JINAN
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  • Application Information

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Problems solved by technology

In addition, the production of ceramsite filter material also needs high-temperature firing, so the production cost is also high, which is the deficiency of the existing technology

Method used

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Embodiment Construction

[0013] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation manner.

[0014] The filter material used for wastewater phosphorus removal in this scheme is spherical particles with a diameter of 3-5mm. The particles are composed of solid waste slag and cement produced by the metallurgical industry, of which the weight of slag accounts for 78-82%, and the rest is Cement, the specific embodiment adopts the weight of water slag to account for 80%, and all the other 20% are cement.

[0015] The technical steps of the manufacturing method that this scheme is used for the waste water dephosphorization filter material are as follows:

[0016] The first step is to take the metallurgical industry solid waste water slag with a moisture content of less than 15%, and then pass through 200 mesh sieves to obtain 80 kg of water slag powder, which is mixed with 20 kg of cement marked No. 425;

[0017] In t...

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Abstract

The invention provides a technical scheme of a filter material for dephosphorizing wastewater and a manufacturing method thereof. The filter material in the scheme is spherical particles with the diameter of 3 to 5mm. The particles consist of the following components which are produced in the metallurgical industry in percentage by weight: 78 to 82 percent of solid waste granulating slag and the balance of cement. The manufacturing method in the scheme has the following steps of: 1, grinding the metallurgical industrial solid waste granulating slag with moisture content of lower than 15 percent, sieving with a 200-mesh sieve to obtain 78 to 82 weight parts of granulating slag powder, and stirring and mixing the granulating slag powder and 18 to 22 weight parts of cement with a label of more than No.400; 2, feeding mixed powder obtained in the first step into a pelletizer for pelletizing, wherein water in the amount which is 25 to 30 percent of the using amount of the cement is required to be added in the pelletizing process and the diameter of each pellet is in the range of 3 to 5mm; 3, placing finished pellets obtained in the second step into a curing box for curing until the cylindrical compressive strength is more than 5MPa; and 4, sieving the cured particle pellets to obtain finished products.

Description

technical field [0001] The invention relates to a sewage treatment material, in particular to a filter material and a manufacturing method for dephosphorization of waste water. Background technique [0002] In the prior art, the biological aerated filter process for water purification usually uses ceramsite as the filter material, and the raw materials for producing ceramsite mainly include shale, clay, etc. Therefore, the production of ceramsite filter material needs A large amount of land resources, due to the country's land protection policy, the production of ceramsite is limited. In the face of increasingly serious environmental pollution, the demand for high-quality filter materials in biological aerated filters is increasing. In addition, the production of ceramsite filter material also needs high-temperature firing, so the production cost is also high, which is the weak point in the prior art. Contents of the invention [0003] The purpose of the present inventio...

Claims

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Application Information

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IPC IPC(8): B01D39/02C02F1/28C02F1/68C02F1/58B09B3/00
Inventor 邱立平李延波王广伟张守彬马静武均均
Owner UNIV OF JINAN
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