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A kind of modified ceramsite filler for adsorption and preparation method thereof

A technology of ceramsite and modification, which is applied in the field of adsorbed modified ceramsite filler and its preparation, which can solve the problems of being unable to meet the needs of sewage treatment, achieve good chemical and thermal stability, increase porosity, and have a hard appearance

Active Publication Date: 2022-06-21
WENZHOU IND SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, although ceramsite is a cheap and widely used filler, the physical characteristics of unmodified ceramsite filler such as specific surface area, pore volume, mechanical strength, and anti-scouring wear performance cannot meet the needs of sewage treatment. Therefore, it is necessary to Modify the ceramsite filler to increase the specific surface area, pore volume, connectivity and other characteristics of the porous ceramsite filler, so as to meet the requirements of sewage treatment

Method used

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  • A kind of modified ceramsite filler for adsorption and preparation method thereof
  • A kind of modified ceramsite filler for adsorption and preparation method thereof

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Embodiment 1

[0030] A kind of modified ceramsite filler for adsorption and preparation method thereof

[0031] The modified ceramsite fillers used for adsorption include by weight: clay 40kg, bentonite 40kg, silica powder 20kg, red mud 80kg, sodium carboxymethyl cellulose 2kg, ammonium sulfate 1kg, modifier 10kg, water glass 5kg, Binder 1kg, pore-forming agent 2kg.

[0032] In this embodiment, the modifier is a mixed solution composed of a ferric chloride solution and a ferrous sulfate solution in a mass ratio of 1:0.5.

[0033] The above-mentioned preparation method of the modified ceramsite filler for adsorption comprises the following steps:

[0034]Step (1): mix the clay, bentonite, silica powder and red mud of the above-mentioned parts by weight evenly, soak in hot water for 24 hours and then dry; the mixture after soaking and drying is ground into fine powder in a grinding machine, Screen out the powder with particle size ≤0.05mm; then fully mix with the above-mentioned pore-formin...

Embodiment 2

[0041] A kind of modified ceramsite filler for adsorption and preparation method thereof

[0042] The modified ceramsite filler used for adsorption, including by weight: clay 50kg, bentonite 50kg, silica powder 35kg, red mud 85kg, sodium carboxymethyl cellulose 4kg, ammonium sulfate 2kg, modifier 15kg, water glass 7kg, Binder 1.5kg, pore-forming agent 2.5kg.

[0043] In this embodiment, the modifier is a mixed solution composed of a ferric chloride solution and a ferrous sulfate solution in a mass ratio of 1.3:0.8.

[0044] The above-mentioned preparation method of the modified ceramsite filler for adsorption comprises the following steps:

[0045] Step (1): mix the clay, bentonite, silica powder and red mud of the above-mentioned parts by weight evenly, soak in hot water for 24 hours and then dry; the mixture after soaking and drying is ground into fine powder in a grinding machine, Screen out the powder with particle size ≤0.05mm; then fully mix with the above-mentioned po...

Embodiment 3

[0052] A kind of modified ceramsite filler for adsorption and preparation method thereof

[0053] Modified ceramsite fillers for adsorption, including by weight: clay 50kg, bentonite 50kg, silica powder 25kg, red mud 100kg, sodium carboxymethyl cellulose 6kg, ammonium sulfate 3kg, modifier 30kg, water glass 7kg, Binder 2kg, pore-forming agent 4kg.

[0054] In this embodiment, the modifier is a mixed solution composed of a ferric chloride solution and a ferrous sulfate solution in a mass ratio of 1.5:1.

[0055] The above-mentioned preparation method of the modified ceramsite filler for adsorption comprises the following steps:

[0056] Step (1): mix the clay, bentonite, silica powder and red mud of the above-mentioned parts by weight evenly, soak in hot water for 24 hours and then dry; the mixture after soaking and drying is ground into fine powder in a grinding machine, Screen out the powder with particle size ≤0.05mm; then fully mix with the above-mentioned pore-forming ag...

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Abstract

The invention discloses an adsorbed modified ceramsite filler and a preparation method thereof. The modified ceramsite filler used for adsorption comprises, in parts by weight: 40-60 parts of clay, 40-60 parts of bentonite, 20-60 parts of silica powder 35 parts, 80-100 parts of red mud, 2-10 parts of sodium carboxymethyl cellulose, 1-5 parts of ammonium sulfate, 10-40 parts of modifier, 5-10 parts of water glass, 1-3 parts of binder , 2-6 parts of pore-forming agent; the mass ratio of the clay, bentonite, silica powder and red mud is 1-1.5:1-1.5:0.5-0.7:2-2.5. The present invention uses clay, bentonite, silica powder, and red mud as main raw materials, adds specific additives, mixes evenly, and prepares the modified ceramsite filler for adsorption with rough surface, large specific surface area, high porosity, and good appearance. Hard, good chemical and thermal stability, good adsorption capacity, easy regeneration, simple process, wide application, economical and practical.

Description

technical field [0001] The invention relates to the fields of water treatment and environment-friendly materials, in particular to a modified ceramsite filler for adsorption and a preparation method thereof. Background technique [0002] With the development of my country's industry, the discharge of industrial waste water is increasing day by day. The discharge of industrial waste water that does not meet the discharge standard pollutes surface water and groundwater, seriously affecting water quality, especially from mining, smelting, electrolysis, electroplating, pesticides, paints, and pigments. Heavy metal wastewater discharged from such enterprises, mercury, cadmium, lead, chromium and other biologically toxic heavy metals contained in heavy metal wastewater are relatively stable in water and are difficult to be degraded by microorganisms in water, so special and reasonable sewage treatment processes are required. deal with. The treatment of heavy metal sewage is usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B33/132C04B33/13C04B33/04B01J20/12B01J20/30C02F1/28
CPCC04B38/067C04B38/0645C04B38/009C04B33/1322C04B33/131C04B33/13C04B33/04B01J20/12B01J20/103B01J20/10B01J20/08B01J20/06C02F1/281B01J2220/4806B01J2220/4825B01J2220/4887C04B2235/6567Y02P40/60
Inventor 黄志达管鸿才郑卉邵建雷
Owner WENZHOU IND SCI RES INST