Desulfurized ash slag waste water dephosphorization materials prepared by baking-free method and preparation method

A technology for desulfurization ash and waste water, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc. problems, to achieve the effect of environmental protection, improvement of market competitiveness, and simple process

Inactive Publication Date: 2010-03-17
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a recyclable wastewater dephosphorization material and preparation method for desulfurization ash prepared by non-burning method, so as to solve the problem of unreasonable utilization of desulfurization ash in the prior art, incomplete removal of phosphorus in wastewater, high cost and poor process. Technical problems such as complex process; the present invention uses desulfurization ash as the main raw material, adopts non-burning process, not only has good product performance, low production cost, can be recycled, has good effect of removing phosphorus in water, low cost of phosphorus removal, and is conducive to realizing environmental protection and the dual purpose of turning waste into treasure

Method used

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preparation example Construction

[0011] The preparation method of the desulfurization ash recyclable waste water dephosphorization material is a non-burning process that does not require heat treatment, and the specific steps of the preparation method are:

[0012] a) The desulfurization ash is passed through a 60-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 6-12mm, an inner diameter of 3-9mm, and a length of 6-12mm, or make a hollow sample with an outer diameter of 15-21mm, an inner diameter of 9-15mm, and a length of 10-16mm ring sample.

[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 present invention is placed in phosph...

Embodiment 1

[0019] The recyclable waste water phosphorus removal material is prepared by using desulfurization ash and cement as raw materials, and the raw material formula is as follows in terms of weight percentage: 63% of desulfurization ash and 37% of cement.

[0020] Preparation steps:

[0021] Sieve the desulfurization ash with 60 mesh;

[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 solution), the dosage is 1 piece / 40ml, each is about 2g, make t...

Embodiment 2

[0027] The recyclable waste water dephosphorization material is prepared by using desulfurization ash and cement as raw materials, and the raw material formula is as follows in terms of weight percentage: 69% of desulfurization ash and 31% of cement.

[0028] Preparation steps:

[0029] a) passing the desulfurization ash through a 60-mesh sieve;

[0030] b) Accurately weigh raw materials and cement according to the formula, add appropriate amount of water (250mL 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 aqueous solution), the dosage is 1 piece / 40ml, each is ...

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Abstract

The invention provides desulfurized ash slag waste water dephosphorization materials prepared by a baking-free method and a preparation method, belonging to recyclable wastewater dephosphorization ecology environment materials. The invention solves the technical problems of the unreasonable use of desulfurized ash slag, incomplete phosphorus removal in the wastewater, high cost, complex technicalflow, and the like, in the prior art. The method comprises the steps of: completely using abundant calcium resources in the desulfurized ash slag; evenly mixing the processed desulfurized ash slag with cement according to proper proportion; shaping; and maintaining to be the wastewater dephosphorization materials in a baking-free way. The invention has simple product prescription and technology, low cost, strong dephosphorization capability and high product intensity, is recyclable, solves the technical difficulty in restricting the recycle of the dephosphorization materials, and has strong market competitive capacity and wide popularization and application value.

Description

technical field [0001] The invention belongs to an ecological environment material for removing lead from recyclable waste water, and more specifically relates to a material for removing phosphorus from desulfurization ash waste water prepared by a non-burning method and a preparation method thereof. Background technique [0002] Our country contains SO 2 The waste gas mainly comes from coal-fired power plants, sintering machines and metallurgical kilns in steel production. The sintering machine is one of the important equipment in the modern iron and steel production process, and it is also the key pollution source of the smoke and dust emission in the iron and steel production process. The capacity of the blast furnace is constantly increasing, and the capacity of the matching sintering machine is also increasing, and it is developing into a large-scale belt sintering machine. The development trend of large-scale sintering machines will inevitably lead to an increase in ...

Claims

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Application Information

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IPC IPC(8): B01J20/02B01J20/30C02F1/28
Inventor 吴任平于岩阮玉忠颜俊瑜
Owner FUZHOU UNIVERSITY
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