Recyclable waste water dephosphorization material of oyster shells prepared by fire-free method and preparation method thereof

A technology for oyster shells and wastewater, which is applied in the field of oyster shell recyclable wastewater phosphorus removal materials and preparation, can solve problems such as unreasonable utilization of oyster shells, incomplete removal of phosphorus elements, and complicated technological processes, so as to achieve environmental protection and increase market share. The effect of competitiveness and simple process

Inactive Publication Date: 2010-01-20
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve technical problems such as unreasonable utilization of oyster shells in the prior art, incomplete removal of phosphorus elements in wastewater, high cost, and complicated process flow; the present invention uses oyster shells as the main raw material and adopts a non-burning process, which not only has good product performance, but also reduces production costs. Low cost, recyclable, good effect of removing phosphorus in water, low cost of phosphorus removal, and beneficial to the dual purpose of environmental protection and turning waste into treasure

Method used

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preparation example Construction

[0011] The preparation method of the oyster shell recyclable wastewater phosphorus removal material is a non-burning process that does not require heat treatment, and the specific steps of the preparation method are:

[0012] a) After the oyster shells are dried, they are crushed and ground; the oyster shells are naturally dried or dried, crushed and ground, and passed through a 100-mesh sieve.

[0013] b) Accurately weigh the raw materials according to the formula, add an appropriate amount of water (150-400mL of water per 1kg of the mixture) and mix evenly;

[0014] c) Compress the mixture into a tubular sample with an outer diameter of 6-12 mm, an inner diameter of 3-9 mm, and a length of 6-12 mm, or make a granular sample with a diameter of 5-30 mm.

[0015] d) The recyclable waste water dephosphorization material can be obtained after the molded sample is placed in water for 28 days to stand still for curing.

[0016] The wastewater phosphorus removal material of the pre...

Embodiment 1

[0019] The recyclable wastewater phosphorus removal material is prepared by using oyster shells and cement as raw materials, and the raw material formula is as follows in terms of weight percentage: 80% of oyster shells and 20% of cement.

[0020] Preparation steps:

[0021] Place the oyster shells in the sun to dry, keep warm for 2 hours, crush and grind, and pass through a 100-mesh sieve;

[0022] Accurately weigh the raw materials and cement according to the formula, add appropriate amount of water (250mL of water per 1kg of mixture) and mix evenly;

[0023] Compress the mixed material to make a hollow tubular sample with an outer diameter of 8 mm, an inner diameter of 4 mm, and a length of 16 mm;

[0024] Put it in water and keep it for 28 days to obtain recyclable waste water dephosphorization material.

[0025] Performance of waste water phosphorus removal net material: add phosphorus removal purification material and simulated waste water (5mg / l KH 2 PO 4 Aqueous so...

Embodiment 2

[0027] The recyclable wastewater phosphorus removal material is prepared by using oyster shells and cement as raw materials, and the raw material formula is as follows in terms of weight percentage: 90% of oyster shells and 10% of cement.

[0028] Preparation steps:

[0029] a) The oyster shells are placed in a drying box, dried at 100°C, crushed and ground, and passed through a 100-mesh sieve;

[0030] b) Accurately weigh raw materials and cement according to the formula, add appropriate amount of water (200mL of water per 1kg of mixture) and mix evenly;

[0031] c) Compress the mixture to form a hollow tubular sample with an outer diameter of 8 mm, an inner diameter of 4 mm, and a length of 16 mm;

[0032] d) standing in water for 28 days of curing to obtain a recyclable waste water phosphorus removal material.

[0033] Performance of waste water phosphorus removal net material: add phosphorus removal purification material and simulated waste water (5mg / l KH 2 PO 4 Aqueo...

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Abstract

The invention provides a recyclable waste water dephosphorization material of oyster shells prepared by a fire-free method and a preparation method thereof, belonging to a recyclable waste water dephosphorization ecological environment material, and solving the technical problems of unreasonable utilization of the oyster shells, incomplete dephosphorization in the waste water, high cost, complex process and the like in the prior art. In the invention, calcium resources in the oyster shells are fully utilized, pre-processed oyster shells and concrete are uniformly mixed according to a proper proportion, molding is carried out, and then the waste water dephosphorization material is prepared through the fire-free method. The invention has simple formulation and process, low cost, strong dephosphorization ability and high intensity, can be recycled, and then solves the difficult technical problem restricting the recycle and regeneration of the dephosphorization material and has very strong market competition and promotion application value.

Description

technical field [0001] The invention belongs to an ecological environment material for removing lead from recyclable waste water, and more particularly relates to a recyclable waste water phosphorus removal material of oyster shells prepared by a non-burning method and a preparation method thereof. Background technique [0002] Fujian has a well-developed aquaculture industry, and its oyster breeding area and output both rank first in the country. In Xiamei Town, Zhangpu County alone, the oyster breeding area is 30,000 mu, and 10,000 tons of discarded oyster shells are discarded every year. The accumulation of discarded oyster shells in the whole province has accumulated nearly one million tons, and it is still increasing rapidly every year. Oyster shells are rich in calcium salts (CaCO 3 ), has a rich natural porous surface, and has a certain biological activity, a special physical structure, and has strong adsorption capacity, exchange capacity and catalytic decomposition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/62C04B28/00B28B3/00B28B11/24C04B18/04C02F101/20
CPCY02W10/37Y02W30/91
Inventor 于岩吴任平阮玉忠黄艳
Owner FUZHOU UNIV
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