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Aluminum sludge composite filler for constructed wetland and preparation method of filler

A composite filler and constructed wetland technology, applied in chemical instruments and methods, water/sewage treatment equipment, water/sludge/sewage treatment, etc., can solve the problems of pH effect on adsorption efficiency, general adsorption effect, etc. Long service life and the effect of purifying water

Inactive Publication Date: 2018-12-14
JIANGSU LONG LEAPING ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption efficiency of aluminum sludge on phosphorus is greatly affected by pH, the higher the pH, the better the adsorption effect of aluminum sludge on phosphorus, and the effluent of this adsorbent is neutral, so the adsorption effect of this composite material on phosphorus is general

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) choose zeolite 40kg, put into granulator and granulate, make zeolite become the granular shape that particle diameter is less than 10 millimeters;

[0031] 2) After taking out the aluminum sludge from the water flocculation and sedimentation tank of the waterworks, add 2kg of sodium bicarbonate powder, stir well, and dehydrate it to a mud cake shape with a dehydrator.

[0032] 3) Put 50kg of the above-mentioned dehydrated aluminum sludge into the granulator, add a binder, mix and stir evenly, and make it evenly wrapped on the surface of the zeolite to form an aluminum sludge shell. At this time, the granules with the aluminum sludge shell The diameter is 3-15 mm.

[0033] 4) drying the above prepared particles with aluminum sludge shells at 105-120° C. for 2-3 hours to remove moisture;

[0034] 5) Put the above-mentioned dried particles in an oxygen-free roasting furnace for roasting, control the furnace temperature between 500-600°C, and control the roasting time b...

Embodiment 2

[0036] 1) choose steel slag 40kg, put into granulator and granulate, make steel slag become the particle shape that particle diameter is less than 10 millimeters;

[0037] 2) After taking out the aluminum sludge from the water flocculation and sedimentation tank of the waterworks, add 2kg of sodium bicarbonate powder, stir well, and dehydrate it to a mud cake shape with a dehydrator.

[0038] 3) Put 50kg of the above-mentioned dehydrated aluminum sludge into the granulator, add the binder and mix and stir evenly, so that it is evenly wrapped on the surface of the steel slag to form an aluminum sludge shell. At this time, the granules with the aluminum sludge shell The diameter is 3-15 mm.

[0039] 4) drying the above prepared particles with aluminum sludge shells at 105-120° C. for 2-3 hours to remove moisture;

[0040] 5) Put the above-mentioned dried particles in an oxygen-free roasting furnace for roasting, control the furnace temperature between 500-600°C, and control the...

Embodiment 3

[0042] 1) choose steel slag 20kg, zeolite 20kg, put into granulator and granulate, make steel slag become the particle shape that particle diameter is less than 10 millimeters;

[0043] 2) After taking out the aluminum sludge from the water flocculation and sedimentation tank of the waterworks, add 2kg of sodium bicarbonate powder, stir well, and dehydrate it to a mud cake shape with a dehydrator.

[0044] 3) Put 50kg of the above-mentioned dehydrated aluminum sludge into the granulator, add binder, mix and stir evenly, make it evenly wrapped on the surface of steel slag and zeolite to form aluminum sludge shell, at this time with aluminum sludge shell The particle size is 3-15 mm.

[0045] 4) drying the above prepared particles with aluminum sludge shells at 105-120° C. for 2-3 hours to remove moisture;

[0046] 5) Put the above-mentioned dried particles in an oxygen-free roasting furnace for roasting, control the furnace temperature between 500-600°C, and control the roasting...

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Abstract

The invention provides aluminum sludge composite filler for constructed wetland and belongs to the technical field of water treatment. The surface of the aluminum sludge composite filler is a porcelainized layer with adsorption micropores, the porcelainized layer is formed by covering the surface of zeolite or steel slag with aluminum sludge and performing high-temperature roasting. The inventionalso provides a preparation method of the composite filler. The composite filler is prepared from raw materials through stirring, granulation, drying, roasting and other steps, the prepared aluminum sludge composite filler has a remarkable removal effect on N and P in sewage, the filler can be repeatedly used for a long time and has the advantages of low cost and good purification effect.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an aluminum sludge composite filler used for purifying high-concentration phosphorus-containing wastewater in constructed wetlands and a preparation method thereof. Background technique [0002] With the rapid development of our country's economy, the amount of sewage discharge in small towns and industrial parks is increasing day by day, and these areas are relatively remote and the supporting facilities are not perfect. The use of conventional treatment technologies such as activated sludge and biofilm method has problems such as high construction and operation costs, complicated processes, and the quality of treated water is difficult to meet the national surface water standard; artificial wetlands are a new type of sewage treatment technology, because of its buffer capacity Large size, convenient management, simple process, low investment, low operating co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F3/32C02F2201/002
Inventor 张瑞斌潘龙吴晗奚道国赵欣欣王乐阳赵旭明祖白玉佘文娟周乃
Owner JIANGSU LONG LEAPING ENG DESIGN
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