CN101773751B - Lightweight cathode and anode water treatment filter material and preparation method thereof - Google Patents
Lightweight cathode and anode water treatment filter material and preparation method thereof Download PDFInfo
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- CN101773751B CN101773751B CN2009102558083A CN200910255808A CN101773751B CN 101773751 B CN101773751 B CN 101773751B CN 2009102558083 A CN2009102558083 A CN 2009102558083A CN 200910255808 A CN200910255808 A CN 200910255808A CN 101773751 B CN101773751 B CN 101773751B
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Abstract
The invention relates to a lightweight cathode and anode water treatment filter material and a preparation method thereof, wherein the lightweight cathode and anode water treatment filter material is made of dried sludge of a sewage treatment plant and 4, 4'-diaminobenzil-2, 2'-disulfonic acid (DSD acid) industrial iron cement, belonging to the technical field of environmental materials. The main raw materials are sludge produced by the sewage treatment plant and iron cement produced at the industrial reduction stage of the DSD acid. Meager clay is used as binding agent. Carboxymethyl cellulose solvent of 2-7 weight percent is used as balling agent. The maximum addition amount of sludge (dry base) of the cathode water treatment filter material of the method can reach 70 percent and the maximum addition amount of iron cement produced at the industrial reduction state of the DSD acid of the anode water treatment filter material can reach 70 percent. The weight of the prepared lightweight cathode and anode water treatment filter material is light, the clay is saved, the specific surface area is large, the waste water produced by printing, leather making and the like can be easily treated, and the environmental benefit, the social benefit and the economic benefit are good.
Description
Technical field
The present invention relates to a kind of with Sewage Plant dewatered sludge and 4,4 '-diaminobenzil-2,2 '-disulfonic acid (DSD acid) iron clay lightweight cathode and anode water treatment filter material and preparation method thereof, belong to the environmentally conscious materials technical field.
Background technology
Wastewater treatment in China factory produces a large amount of mud every day.Not only contain a large amount of organic matters in the mud, comprise harmful substances such as heavy metal, pathogen simultaneously, therefore; The harmful substance contents of mud is high, foul smelling; Be prone to corrupt, unstable, if discharging arbitrarily not only causes the waste of resource, also can cause large-scale secondary pollution; The correlative investment of Treatment of Sludge and operation expend huge, account for the 12%-30% and the 20%-50% of full factory of sewage treatment plant expense respectively, and this is seriously restricting the normal operation and the development of Sewage Plant.
The production of DSD acid comprises sulfonation, oxidation and reduction three phases.Can produce the organic wastewater of a large amount of difficult degradations in sulfonation and the reduction process, adopt the method for Fenton (Fenton) oxidation+flocculation to handle a large amount of mud of generation in the while flocculation process usually; Oxidation stage makes the organic matter that contains a large amount of difficult degradations in the mud.At present, discharging is selected directly to pile up by most of enterprise, not only takies a large amount of soils, and in the residual environment of the organic matter of difficult degradation in mud meeting, causes secondary pollution.
The internal electrolysis of iron method is through the comprehensive utilization to electrochemical corrosion course; Realize the chain rupture of larger molecular organics, the decolouring of color development and auxochrome group, thus improved the biodegradability of sewage; Increased the easy degraded organic carbon source quantity in the sewage, and whole process can continue stripping iron ion (Fe
2+); And this method need not medicine machine, only can satisfy the demand through the interior electrolysis of iron, has saved huge capital cost and operating cost.Iron mud so that Sewage Plant dewatered sludge and the DSD acid industrial reduction stage produces is fired lightweight negative and positive water treatment filter material, not only can handle two kinds of reluctant solid waste, and can waste recycling, reaches the purpose of changing waste into resources.
Above-mentioned waste material not only is difficult to handle, and disposal cost is high, causes the part medium-sized and small enterprises can't bear high disposal cost and arbitrarily discharging, very easily causes the serious environmental pollution problem.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of clay lightweight cathode and anode water treatment filter material that is equipped with of iron that utilizes Sewage Plant dewatered sludge and DSD acid industrial reduction stage generation and preparation method thereof is provided.
The primary raw material of this method is the mud of sewage treatment plant's output and the iron mud of DSD acid industrial reduction stage generation, and binding agent is a meager clay, and becoming globule is 2～7wt% carboxymethyl cellulose solvent.Mud (butt) addition of this method negative electrode water treatment filter material reaches as high as 70%, and the iron mud addition that the DSD acid industrial reduction stage of anode water treatment filter material produces reaches as high as 70%.The lightweight cathode and anode water treatment filter material light weight of preparation, joint soil, specific area is big, is easy to handle printing and dyeing, and waste water such as process hides also extremely have good benefits in environment, social benefit and economic benefit.
Detailed Description Of The Invention
A kind of preparation method of lightweight negative electrode water treatment filter material is characterized in that, may further comprise the steps:
(1) gets sewage plant sludge, after the drying and other treatment,, get mud granule through broken;
(2) get meager clay, after oven dry is handled,, get clay particle through broken;
(3) with weight ratio 5.5～7.0: 3.0～4.5 ratio takes by weighing the clay particle that mud granule that step (1) makes and step (2) make; After evenly mixing; As becoming globule granulation in the drum-type comminutor, get negative electrode water treatment filter material raw material ball with 2～7wt% carboxymethyl cellulose solvent;
(4) the negative electrode water treatment filter material raw material ball that step (3) is made placed under the normal temperature dry 10 hours-20 hours, negative electrode water treatment filter material particle;
(5) the negative electrode water treatment filter material particle that step (4) is made is at 500～600 ℃, and secluding air heating 20～30min is cooled to room temperature in the close drying device, promptly gets the negative electrode water treatment filter material.
The clay particle that mud granule that said step (1) makes and step (2) make is after fragmentation to be crossed the screening of 100 mesh sieves and makes, and particle diameter all is not more than 0.15mm.
The addition of 2～7wt% carboxymethyl cellulose solvent is 5～7wt% of gross weight in the said step (3).
The diameter of negative electrode water treatment filter material raw material ball is 5-8mm in the said step (3).
The lightweight negative electrode water treatment filter material that makes by said method.
A kind of preparation method of lightweight anode water treatment filter material is characterized in that, may further comprise the steps:
(I) get 4,4 '-diaminobenzil-2,2 '-the iron mud that produces of disulfonic acid industrial reduction stage, after the drying and other treatment, through broken, iron mud particle;
(II) get meager clay, after oven dry is handled,, get clay particle through broken;
(III) with weight ratio 5.5～7.0: 3.0～4.5 ratio takes by weighing the clay particle that iron mud particle that step (I) makes and step (II) make; After evenly mixing; As becoming globule granulation in the drum-type comminutor, get anode water treatment filter material raw material ball with 2～7wt% carboxymethyl cellulose solvent;
(IV) the anode water treatment filter material raw material ball that step (III) is made placed under the normal temperature dry 10 hours-20 hours, anode water is handled filtering material particle;
(V) anode water that step (IV) is made is handled filtering material particle at 800～900 ℃, and secluding air heating 20～30min is cooled to room temperature in the close drying device, promptly gets the anode water treatment filter material.
The clay particle that iron mud particle that said step (I) makes and step (II) make is after fragmentation to be crossed the screening of 100 mesh sieves and makes, and particle diameter all is not more than 0.15mm.
The addition of 2～7wt% carboxymethyl cellulose solvent is 5～7wt% of gross weight in the said step (III).
The diameter of negative electrode water treatment filter material raw material ball is 5-8mm in the said step (III).
The lightweight anode water treatment filter material that makes by said method.
The above-mentioned processing to the drying and other treatment of mud with to the oven dry of meager clay is this area treatment process (roller drying) commonly used, and the sludge moisture content after drying and other treatment is 15wt%, and the meager clay water content after oven dry is handled is 15wt%.
Technology of the present invention is simple, and the lightweight cathode and anode water treatment filter material outward appearance of preparation is the coarse globular solids of black surface, and negative electrode filtrate bulk density is 650.0～750.0kg/m
3, grain density is 1670.0～1780.0kg/m
3, water absorption rate is 23～25%.Anode filtrate bulk density 980.0～1120.0kg/m
3, grain density is 2140.0～2320.0kg/m
3, water absorption rate is 10～12%.Have characteristics such as lightweight, water absorption rate is little, specific area is big.
Find through on probation: the lightweight negative and positive water treatment filter material of the present invention's preparation can be directly as the filler of BAF; Cooperate special-purpose water processing establishment, utilize the interior electrolysis of negative and positive water treatment filter material to replace reluctant sewage such as Fenton reagent method advanced treatment of dyeing wastewater commonly used, pharmacy waste water.Have easy and simple to handle, advantages such as decolouring is rapid, COD clearance height.
Description of drawings
Fig. 1 (A) is the lightweight anode water treatment filter material of the embodiment of the invention 1 preparation;
Fig. 1 (B) is the lightweight negative electrode water treatment filter material of the embodiment of the invention 1 preparation;
Fig. 2 (A) is the lightweight anode water treatment filter material of the embodiment of the invention 2 preparations;
Fig. 2 (B) is the lightweight negative electrode water treatment filter material of the embodiment of the invention 2 preparations;
Fig. 3 (A) is the lightweight anode water treatment filter material of the embodiment of the invention 3 preparations;
Fig. 3 (B) is the lightweight negative electrode water treatment filter material of the embodiment of the invention 3 preparations.
The specific embodiment
Below in conjunction with embodiment the present invention is done further elaboration, but institute of the present invention protection domain is not limited thereto.
Sewage plant sludge described in the embodiment is taken from Jinan wide water utilities one factory; Meager clay is taken from the locality, Jinan; 4; 4 '-diaminobenzil-2,2 '-iron mud that the disulfonic acid industrial reduction stage produces takes from Hebei China dagger-axe chemistry Group Co.,Ltd, and the carboxymethyl cellulose solvent opens light scientific & trading Co., Ltd. available from Jinan.
Embodiment 1
A kind of preparation method of lightweight negative electrode water treatment filter material may further comprise the steps:
(1) gets sewage plant sludge, after the drying and other treatment,, sieve (particle diameter≤0.15mm), get mud granule with 100 mesh sieves through broken;
(2) get meager clay, after oven dry is handled,, sieve (particle diameter≤0.15mm), get clay particle with 100 mesh sieves through broken;
(3) take by weighing the clay particle that mud granule that step (1) makes and step (2) make with 5.5: 4.5 ratio of weight ratio; After evenly mixing; With 2wt% carboxymethyl cellulose solvent as becoming globule; Addition is 7% of a gross weight, granulation in the drum-type comminutor, and getting diameter is the negative electrode water treatment filter material raw material ball of 6mm;
(4) the negative electrode water treatment filter material raw material ball that step (3) is made placed under the normal temperature dry 10 hours, negative electrode water treatment filter material particle;
(5) the negative electrode water treatment filter material particle that step (4) is made is at 500 ℃, and secluding air heating 20min is cooled to room temperature in the close drying device, promptly gets the negative electrode water treatment filter material.
A kind of preparation method of lightweight anode water treatment filter material may further comprise the steps:
(I) get 4,4 '-diaminobenzil-2,2 '-the iron mud that produces of disulfonic acid industrial reduction stage, after the drying and other treatment,, sieve with 100 mesh sieves that (particle diameter≤0.15mm) must iron mud particle through broken;
(II) get meager clay, after oven dry is handled,, sieve (particle diameter≤0.15mm), get clay particle with 100 mesh sieves through broken;
(III) take by weighing the clay particle that iron mud particle that step (I) makes and step (II) make with 5.5: 4.5 ratio of weight ratio; After evenly mixing; With 2wt% carboxymethyl cellulose solvent as becoming globule; Addition is 7% of a gross weight, granulation in the drum-type comminutor, and getting diameter is the anode water treatment filter material raw material ball of 6mm;
(IV) the anode water treatment filter material raw material ball that step (III) is made placed under the normal temperature dry 10 hours, anode water is handled filtering material particle;
(V) anode water that step (IV) is made is handled filtering material particle at 800 ℃, and secluding air heating 20min is cooled to room temperature in the close drying device, promptly gets the anode water treatment filter material.
The lightweight cathode and anode water treatment filter material outward appearance of preparation is the coarse globular solids of black surface, and negative water treatment filter material bulk density is 750kg/m
3, grain density is 1780kg/m
3, water absorption rate is 25%.Positive water treatment filter material bulk density 1120kg/m
3, grain density is 2320.0kg/m
3, water absorption rate is 12%.Product is shown in Fig. 1 (A) and Fig. 1 (B).
Embodiment 2
A kind of preparation method of lightweight negative electrode water treatment filter material may further comprise the steps:
(1) gets sewage plant sludge, after the drying and other treatment,, sieve (particle diameter≤0.15mm), get mud granule with 100 mesh sieves through broken;
(2) get meager clay, after oven dry is handled,, sieve (particle diameter≤0.15mm), get clay particle with 100 mesh sieves through broken;
(3) take by weighing the clay particle that mud granule that step (1) makes and step (2) make with 6: 4 ratio of weight ratio; After evenly mixing; With 4wt% carboxymethyl cellulose solvent as becoming globule; Addition is 6% of a gross weight, granulation in the drum-type comminutor, and getting diameter is the negative electrode water treatment filter material raw material ball of 6mm;
(4) the negative electrode water treatment filter material raw material ball that step (3) is made placed under the normal temperature dry 15 hours, negative electrode water treatment filter material particle;
(5) the negative electrode water treatment filter material particle that step (4) is made is at 550 ℃, and secluding air heating 25min is cooled to room temperature in the close drying device, promptly gets the negative electrode water treatment filter material.
A kind of preparation method of lightweight anode water treatment filter material may further comprise the steps:
(I) get 4,4 '-diaminobenzil-2,2 '-the iron mud that produces of disulfonic acid industrial reduction stage, after the drying and other treatment,, sieve with 100 mesh sieves that (particle diameter≤0.15mm) must iron mud particle through broken;
(II) get meager clay, after oven dry is handled,, sieve (particle diameter≤0.15mm), get clay particle with 100 mesh sieves through broken;
(III) take by weighing the clay particle that iron mud particle that step (I) makes and step (II) make with 6: 4 ratio of weight ratio; After evenly mixing; With 4wt% carboxymethyl cellulose solvent as becoming globule; Addition is 6% of a gross weight, granulation in the drum-type comminutor, and getting diameter is the anode water treatment filter material raw material ball of 6mm;
(IV) the anode water treatment filter material raw material ball that step (III) is made placed under the normal temperature dry 15 hours, anode water is handled filtering material particle;
(V) anode water that step (IV) is made is handled filtering material particle at 850 ℃, and secluding air heating 25min is cooled to room temperature in the close drying device, promptly gets the anode water treatment filter material.
The lightweight cathode and anode water treatment filter material outward appearance of preparation is the coarse globular solids of black surface, and negative electrode water treatment filter material bulk density is 701.0kg/m
3, grain density is 1694.4kg/m
3, water absorption rate is 23.6%; Anode water treatment filter material bulk density 1035.2kg/m
3, grain density is 2163.5kg/m
3, water absorption rate is 11.2%.Product is shown in Fig. 2 (A) and Fig. 2 (B).
Embodiment 3
A kind of preparation method of lightweight negative electrode water treatment filter material may further comprise the steps:
(1) gets sewage plant sludge, after the drying and other treatment,, sieve (particle diameter≤0.15mm), get mud granule with 100 mesh sieves through broken;
(2) get meager clay, after oven dry is handled,, sieve (particle diameter≤0.15mm), get clay particle with 100 mesh sieves through broken;
(3) take by weighing the clay particle that mud granule that step (1) makes and step (2) make with 7: 3 ratio of weight ratio; After evenly mixing; With 7wt% carboxymethyl cellulose solvent as becoming globule; Addition is 5% of a gross weight, granulation in the drum-type comminutor, and getting diameter is the negative electrode water treatment filter material raw material ball of 6mm;
(4) the negative electrode water treatment filter material raw material ball that step (3) is made placed under the normal temperature dry 20 hours, negative electrode water treatment filter material particle;
(5) the negative electrode water treatment filter material particle that step (4) is made is at 600 ℃, and secluding air heating 30min is cooled to room temperature in the close drying device, promptly gets the negative electrode water treatment filter material.
A kind of preparation method of lightweight anode water treatment filter material may further comprise the steps:
(I) get 4,4 '-diaminobenzil-2,2 '-the iron mud that produces of disulfonic acid industrial reduction stage, after the drying and other treatment,, sieve with 100 mesh sieves that (particle diameter≤0.15mm) must iron mud particle through broken;
(II) get meager clay, after oven dry is handled,, sieve (particle diameter≤0.15mm), get clay particle with 100 mesh sieves through broken;
(III) take by weighing the clay particle that iron mud particle that step (I) makes and step (II) make with 7: 3 ratio of weight ratio; After evenly mixing; With 7wt% carboxymethyl cellulose solvent as becoming globule; Addition is 5% of a gross weight, granulation in the drum-type comminutor, and getting diameter is the anode water treatment filter material raw material ball of 6mm;
(IV) the anode water treatment filter material raw material ball that step (III) is made placed under the normal temperature dry 20 hours, anode water is handled filtering material particle;
(V) anode water that step (IV) is made is handled filtering material particle at 900 ℃, and secluding air heating 30min is cooled to room temperature in the close drying device, promptly gets the anode water treatment filter material.
The cathode and anode water treatment filter material outward appearance of preparation is the coarse globular solids of black surface, and negative electrode water treatment filter material bulk density is 650kg/m
3, grain density is 1670kg/m
3, water absorption rate is 23%.Anode water treatment filter material bulk density 980.0kg/m
3, grain density is 2140kg/m
3, water absorption rate is 10.0%.Product is shown in Fig. 3 (A) and Fig. 3 (B).
Claims (5)
1. the preparation method of a lightweight anode water treatment filter material is characterized in that, may further comprise the steps:
(I) get 4,4 '-diaminobenzil-2,2 '-the iron mud that produces of disulfonic acid industrial reduction stage, after the drying and other treatment, through broken, iron mud particle;
(II) get meager clay, after oven dry is handled,, get clay particle through broken;
(III) with weight ratio 5.5～7.0: 3.0～4.5 ratio takes by weighing the clay particle that iron mud particle that step (I) makes and step (II) make; After evenly mixing; With concentration is 2～7wt% cmc soln as becoming globule granulation in the drum-type comminutor, anode water treatment filter material raw material ball;
(IV) the anode water treatment filter material raw material ball that step (III) is made placed under the normal temperature dry 10 hours-20 hours, anode water is handled filtering material particle;
(V) anode water that step (IV) is made is handled filtering material particle at 800～900 ℃, and secluding air heating 20～30min is cooled to room temperature in the close drying device, promptly gets the anode water treatment filter material.
2. the preparation method of lightweight anode water treatment filter material as claimed in claim 1; It is characterized in that; The clay particle that iron mud particle that said step (I) makes and step (II) make is after fragmentation to be crossed the screening of 100 mesh sieves and makes, and particle diameter all is not more than 0.15mm.
3. the preparation method of lightweight anode water treatment filter material as claimed in claim 1 is characterized in that, concentration is that the addition of 2～7wt% cmc soln is 5～7% of a gross weight in the said step (III).
4. the preparation method of lightweight anode water treatment filter material as claimed in claim 1 is characterized in that, the diameter of negative electrode water treatment filter material raw material ball is 5-8mm in the said step (III).
5. the lightweight anode water treatment filter material that makes by method according to claim 1.
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| CN101773751B true CN101773751B (en) | 2012-05-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913584B (en) * | 2010-08-27 | 2012-04-04 | 江苏永冠给排水设备有限公司 | Method for producing filter material for removing fluorine from drinking water |
| CN106422520B (en) * | 2016-09-23 | 2018-09-21 | 中国海洋石油集团有限公司 | A kind of disposing polluted water in oil modified walnut shell filtering material and preparation method thereof |
| CN106810204B (en) * | 2016-12-26 | 2020-09-25 | 山东大学 | Fenton iron mud cathode and anode integrated ceramsite and method for preparing ceramsite by utilizing Fenton iron mud |
| CN112933737A (en) * | 2021-03-10 | 2021-06-11 | 青岛新理工智赢环境管理有限公司 | Light cathode and anode water treatment filter material processing equipment and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792411A (en) * | 2005-11-28 | 2006-06-28 | 哈尔滨工业大学 | Filtering material used for water-treatment made from waste mud and its prodn. method |
| CN101327987A (en) * | 2008-07-08 | 2008-12-24 | 山东大学 | Use of sludge porcelain granule in sewage disposal |
| CN101362073A (en) * | 2008-09-27 | 2009-02-11 | 山东大学 | Preparation method of acidification sludge bentonite granules |
| CN101406777A (en) * | 2008-11-10 | 2009-04-15 | 河南工业大学 | Porous porcelain granule filter material based on glass and sludge, and preparation method thereof |
-
2009
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792411A (en) * | 2005-11-28 | 2006-06-28 | 哈尔滨工业大学 | Filtering material used for water-treatment made from waste mud and its prodn. method |
| CN101327987A (en) * | 2008-07-08 | 2008-12-24 | 山东大学 | Use of sludge porcelain granule in sewage disposal |
| CN101362073A (en) * | 2008-09-27 | 2009-02-11 | 山东大学 | Preparation method of acidification sludge bentonite granules |
| CN101406777A (en) * | 2008-11-10 | 2009-04-15 | 河南工业大学 | Porous porcelain granule filter material based on glass and sludge, and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 岳敏等.城市污水厂污泥制备陶粒滤料及其特性.《过程工程学报》.2008,第8卷(第5期),第972-977页. * |
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