CN102008948B - Method for regenerating waste residues of kieselguhr filter aid - Google Patents
Method for regenerating waste residues of kieselguhr filter aid Download PDFInfo
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- CN102008948B CN102008948B CN201010555591A CN201010555591A CN102008948B CN 102008948 B CN102008948 B CN 102008948B CN 201010555591 A CN201010555591 A CN 201010555591A CN 201010555591 A CN201010555591 A CN 201010555591A CN 102008948 B CN102008948 B CN 102008948B
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Abstract
The invention discloses a method for regenerating waste residues of a kieselguhr filter aid, which comprises the following steps of: a) immersing the waste residues of the kieselguhr filter aid into solution of diluted hydrochloric acid, performing solid-liquid separation, and washing the solid by using water until the pH value is 7; b) immersing the obtained solid into solution of NaOH, boiling, performing solid-liquid separation, and washing the solid by using the water until the pH value is 7; c) immersing the obtained solid into clear water, adding solution of potassium permanganate, performing solid-liquid separation, and washing the solid by using the water; and d) immersing the obtained solid into the clear water, dripping solution of NaHSO3, stirring until the solid is in the natural color, washing the solid by using the water, performing solid-liquid separation, and drying. In the method, the process is simple, the operation is convenient, electric energy is saved, industrial production can be performed continuously, the phenomenon that waste residues occupy land and generate odor that pollutes the environment in long-term stacking is eliminated, the production cost is reduced, and the requirements of recycling economy are met; and the using effect of the obtained regenerant of kieselguhr is the same as that of kieselguhr, and the regenerant of the kieselguhr can be regenerated for many times.
Description
Technical field
The present invention relates to the filter aid process field, be specifically related to a kind of renovation process of diatomite filter aid waste residue.
Background technology
Diatomite is that the remains deposition of unicellular water plant diatom forms, and main chemical compositions is noncrystal silica, with clay impurity and organic matters such as a small amount of montmorillonite, kaolinites.Examine under a microscope, the single frond surfaces externally and internally of diatomite distributes numerous nanometer level microporous.
Diatomite can be used as filter aid; Can improve the rate of filtration; Solid particle, suspended material, colloidal particle and bacterium in the auxiliary filtering liquid play the effect that promotes liquid filtering and purification, are widely used in the industries such as food, beverage, medicine, oil, chemical industry, dye well water treatment.
About about ten thousand yuan/ton of the price of domestic diatomaceous earth products; About 10,000 5 thousand yuan/ton of the price of U.S.'s product; And usually can be as waste sludge discharge after the disposable use of super-cell, especially the production of beer is to use the rich and influential family of filter aid, will consume the few hundred thousand tonnes of super-cell every year; Its waste sludge discharge causes the wasting of resources and environmental pollution, does not meet the requirement of recycling economy.
Existing diatomite regeneration techniques, as Chinese patent CN1559669 through stir to clean, dry, adding assistant is placed naturally, heat is regenerated calcining etc., and operations are regenerated, machining process is loaded down with trivial details, suitability for industrialized production that need be continuous, and consume a large amount of electric energy.
Summary of the invention
The technical problem that the present invention solves provides a kind of renovation process of diatomite filter aid waste residue, saves electric energy.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of renovation process of diatomite filter aid waste residue may further comprise the steps:
A) diatomite filter aid waste residue is soaked in the dilute hydrochloric acid solution, Separation of Solid and Liquid then, the solid after water will separate is washed till pH for neutral;
B) will more than the solid that obtains be soaked in the NaOH solution, boil, Separation of Solid and Liquid then, the solid after water will separate is washed till pH and is neutrality;
C) will more than the solid that obtains be soaked in the clear water, add liquor potassic permanganate, Separation of Solid and Liquid then, the solid after water will separate is clean;
D) solid that obtains more than the general is soaked in the clear water, drips NaHSO
3Solution is stirred to solid and is former true qualities, and water cleans this solid then, and is dry after the Separation of Solid and Liquid.
As preferably, said a) in the weight percent concentration of dilute hydrochloric acid solution be 20%～25%.
As preferably, the weight ratio of diatomite filter aid waste residue and said dilute hydrochloric acid solution is 1: 3～1: 5.
As preferably, said a) in soak time be 20h～24h.
As preferably, said b) the percent weight in volume concentration of NaOH solution is 10%～20% in.
As preferably, the weight ratio of said solid and said NaOH solution is 1: 1.5～1: 3.
As preferably, said b) boiling time is 1.5h～2h in.
As preferably, said c) the percent weight in volume concentration of liquor potassic permanganate is 0.1%～0.3% in.
As preferably, the weight ratio of said solid and said liquor potassic permanganate is 1: 0.2～1: 0.6.
As preferably, said d) NaHSO in
3The percent weight in volume concentration of solution is 0.5%～2%.
A kind of method that this method provides is regenerated to diatomite filter aid waste residue, does not carry out high-temperature roasting, saves electric energy, can the serialization commercial production, and avoid the long-term land occupation of waste residue to stack and produce foreign odor flavor contaminated environment; Reduce waste sludge discharge, reduce production costs, meet the requirement of recycling economy; The result of use of diatomite regrowth is identical with for the first time, and can repeatedly regenerate, and regrowth also can be used as the carrier that filtrate is used for Drinking Water or is used as the petroleum chemical industry catalyst.
The specific embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, describe just to further specifying feature and advantage of the present invention but should be appreciated that these, rather than to the restriction of claim of the present invention.
The renovation process of diatomite filter aid waste residue provided by the invention may further comprise the steps:
A) diatomite filter aid waste residue is soaked in the dilute hydrochloric acid solution; The weight percent concentration of dilute hydrochloric acid solution is preferably 20%～25%; The weight ratio of diatomite filter aid waste residue and said dilute hydrochloric acid solution is preferably 1: 3～and 1: 5, soak 20h～24h, can be whenever once at a distance from stirring in two hours; Carry out Separation of Solid and Liquid then, water is washed till pH for neutral with solid.
B) solid that obtains more than the general is soaked in the NaOH solution; The percent weight in volume concentration of NaOH solution is preferably 10%～20%; The weight ratio of this solid and NaOH solution is preferably 1: 1.5～and 1: 3, ceaselessly stir, boil 1.5h～2h then; Carry out Separation of Solid and Liquid again, water is washed till pH for neutral with solid.
C) solid that obtains more than the general is soaked in the clear water; Add liquor potassic permanganate, at the uniform velocity stir 1h～2h, with oxidation removal pigment and organic and inorganic impurity; Separation of Solid and Liquid then; Water is cleaned solid, and wherein the percent weight in volume concentration of liquor potassic permanganate is 0.1%～0.3%, and the weight ratio of solid and liquor potassic permanganate is 1: 0.2～1: 0.6.
D) solid that obtains more than the general is soaked in the clear water, drips NaHSO
3Solution fades away NaHSO to make the color of potassium permanganate through reduction
3The percent weight in volume concentration of solution is 0.5%～2%, is stirred to solid and is former true qualities, and water cleans then, and is dry down in 100 ℃～120 ℃ after the Separation of Solid and Liquid.
Can pulverize regeneration in addition through dried solid.
Embodiment 1:
A) be that to be soaked in weight percent concentration be in 22% the dilute hydrochloric acid solution for the diatomite filter aid waste residue of CD06 with model; The weight ratio of diatomite filter aid waste residue and dilute hydrochloric acid solution is 1: 4; Soak 22h; Whenever stirred once at a distance from two hours, carry out Separation of Solid and Liquid then, water is washed till pH for neutral with solid.
B) will more than the solid that obtains be soaked in percent weight in volume concentration and be preferably in 15% the NaOH solution, the weight ratio of solid and NaOH solution is 1: 2, ceaselessly stirs, and boils 1.5h then, Separation of Solid and Liquid again, water is washed till pH with solid and is neutrality.
C) will more than the solid that obtains be soaked in the clear water, adding percent weight in volume concentration is 0.2% liquor potassic permanganate, at the uniform velocity stirs 1.5h, Separation of Solid and Liquid then, water is cleaned solid, the weight ratio of solid and liquor potassic permanganate is 1: 0.3.
D) solid that obtains more than the general is soaked in the clear water, and dropping percent weight in volume concentration is 1% NaHSO
3Solution is stirred to solid and is diatomaceous former true qualities, and water cleans then, and is dry down in 100 ℃ after the Separation of Solid and Liquid.
The solid that obtains is pulverized.
Embodiment 2:
A) be that to be soaked in weight percent concentration be in 20% the dilute hydrochloric acid solution for the diatomite filter aid waste residue of CD06 with model; The weight ratio of diatomite filter aid waste residue and dilute hydrochloric acid solution is 1: 3; Soak 23h; Whenever stirred once at a distance from two hours, carry out Separation of Solid and Liquid then, water is washed till pH for neutral with solid.
B) will more than the solid that obtains be soaked in percent weight in volume concentration and be preferably in 10% the NaOH solution, the weight ratio of solid and NaOH solution is 1: 2.5, ceaselessly stirs, and boils 1.8h then, Separation of Solid and Liquid again, water is washed till pH with solid and is neutrality.
C) will more than the solid that obtains be soaked in the clear water, adding percent weight in volume concentration is 0.3% liquor potassic permanganate, at the uniform velocity stirs 2h, Separation of Solid and Liquid then, water is cleaned solid, the weight ratio of solid and liquor potassic permanganate is 1: 0.2.
D) solid that obtains more than the general is soaked in the clear water, and dropping percent weight in volume concentration is 2% NaHSO
3Solution is stirred to solid and is diatomaceous former true qualities, and water cleans then, and is dry down in 110 ℃ after the Separation of Solid and Liquid.
The solid that obtains is pulverized.
Embodiment 3:
A) be that to be soaked in weight percent concentration be in 24% the dilute hydrochloric acid solution for the diatomite filter aid waste residue of CD06 with model; The weight ratio of diatomite filter aid waste residue and dilute hydrochloric acid solution is 1: 5; Soak 24h; Whenever stirred once at a distance from two hours, carry out Separation of Solid and Liquid then, water is washed till pH for neutral with solid.
B) will more than the solid that obtains be soaked in percent weight in volume concentration and be preferably in 18% the NaOH solution, the weight ratio of solid and NaOH solution is 1: 1.5, ceaselessly stirs, and boils 1.5h then, Separation of Solid and Liquid again, water is washed till pH with solid and is neutrality.
C) will more than the solid that obtains be soaked in the clear water, adding percent weight in volume concentration is 0.1% liquor potassic permanganate, at the uniform velocity stirs 1h, Separation of Solid and Liquid then, water is cleaned solid, the weight ratio of solid and liquor potassic permanganate is 1: 0.5.
D) solid that obtains more than the general is soaked in the clear water, and dropping percent weight in volume concentration is 0.8% NaHSO
3Solution is stirred to solid and is diatomaceous former true qualities, and water cleans then, and is dry down in 120 ℃ after the Separation of Solid and Liquid.
The solid that obtains is pulverized.
Compare with former diatomite with through the diatomaceous physical and chemical parameter after embodiment 1 to 3 processing, obtain table 1:
The diatomaceous physical and chemical parameter of table 1
| Index | Former diatomite | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| SiO 2(％) | 89 | 87 | 86.6 | 88.4 |
| Al 2O 3(％) | 3.53 | 3.44 | 3.31 | 3.47 |
| Fe 2O 3(％) | 1.4 | 1.31 | 1.25 | 1.36 |
| Permeability | 0.2 | 0.3 | 0.3 | 0.3 |
| Tight bulk density (g/cm 3) | 0.42 | 0.41 | 0.40 | 0.42 |
| Wet density (g/cm 3) | 0.35 | 0.34 | 0.33 | 0.35 |
| + 150 mesh screen residues (%) | 0.5 | 0.7 | 0.8 | 0.8 |
| + 320 mesh screen residues (%) | 2 | 2.3 | 2.3 | 2.4 |
The organic matter that produces after diatomite uses, mushroom etc. are removed in processing method provided by the invention, and diatomaceous chemical composition is constant basically, thereby realize regeneration.After using, can know that the diatomite after the regeneration is functional, the reuse effect is identical with for the first time, and can reuse repeatedly, can also be used for Drinking Water as filtrate, and the carrier etc. that is used as the petroleum chemical industry catalyst.
More than the renovation process of a kind of diatomite filter aid waste residue provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (1)
1. the renovation process of a diatomite filter aid waste residue is characterized in that, may further comprise the steps:
A) diatomite filter aid waste residue is soaked in the dilute hydrochloric acid solution; Soak time is 20h～24h; Separation of Solid and Liquid then; Solid after water will separate is washed till pH for neutral, and the weight percent concentration of dilute hydrochloric acid solution is 20%～25%, and the weight ratio of diatomite filter aid waste residue and said dilute hydrochloric acid solution is 1: 3～1: 5;
B) solid that obtains more than the general is soaked in the NaOH solution; Boil; Boiling time is 1.5h～2h, Separation of Solid and Liquid then, and the solid after water will separate is washed till pH for neutral; The percent weight in volume concentration of NaOH solution is 10%～20%, and the weight ratio of solid and said NaOH solution is 1: 1.5～1: 3;
C) solid that obtains more than the general is soaked in the clear water; Add liquor potassic permanganate; Separation of Solid and Liquid then; Solid after water will separate is cleaned, and the percent weight in volume concentration of liquor potassic permanganate is 0.1%～0.3%, and the weight ratio of said solid and said liquor potassic permanganate is 1: 0.2～1: 0.6;
D) solid that obtains more than the general is soaked in the clear water, drips NaHSO
3Solution is stirred to solid and is former true qualities, and water cleans this solid then, and is dry after the Separation of Solid and Liquid, NaHSO
3The percent weight in volume concentration of solution is 0.5%～2%.
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| CN201010555591A CN102008948B (en) | 2010-11-22 | 2010-11-22 | Method for regenerating waste residues of kieselguhr filter aid |
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| CN201010555591A CN102008948B (en) | 2010-11-22 | 2010-11-22 | Method for regenerating waste residues of kieselguhr filter aid |
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| CN102008948B true CN102008948B (en) | 2012-09-05 |
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| CN106334519B (en) * | 2016-11-02 | 2018-12-28 | 叶欣欣 | A kind of preparation method of super-cell |
| CN113018905B (en) * | 2021-03-03 | 2022-07-05 | 东阳市易源环保科技有限公司 | Waste oil purification device based on silica gel and carclazyte adsorb and retrieve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634650A (en) * | 2004-12-13 | 2005-07-06 | 马菊云 | Regeneration technology for waste residue of diatomaceous earth filter aid of sulphonate production refuse |
| CN1651135A (en) * | 2004-02-06 | 2005-08-10 | 王纪滨 | Waste kieselgubr filtering aid regeneration and utilization method and device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651135A (en) * | 2004-02-06 | 2005-08-10 | 王纪滨 | Waste kieselgubr filtering aid regeneration and utilization method and device |
| CN1634650A (en) * | 2004-12-13 | 2005-07-06 | 马菊云 | Regeneration technology for waste residue of diatomaceous earth filter aid of sulphonate production refuse |
Non-Patent Citations (1)
| Title |
|---|
| 赵慧娟.啤酒过滤废硅藻土分离方法研究.《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》.2007,(第4期),正文第10页第3行，正文第29页第3段以及图3-9，正文第41页倒数第1段以及图4-1. * |
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