CN102276024B - Preparation method of structured micro-electrolysis packing used for treating wastewater, and structured micro-electrolysis packing - Google Patents
Preparation method of structured micro-electrolysis packing used for treating wastewater, and structured micro-electrolysis packing Download PDFInfo
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- CN102276024B CN102276024B CN 201110178606 CN201110178606A CN102276024B CN 102276024 B CN102276024 B CN 102276024B CN 201110178606 CN201110178606 CN 201110178606 CN 201110178606 A CN201110178606 A CN 201110178606A CN 102276024 B CN102276024 B CN 102276024B
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Abstract
The invention relates to a preparation method of a structured micro-electrolysis packing used for treating wastewater, and a structured micro-electrolysis packing. The method comprises steps that: a, sludge processed from printing wastewater and wood chips are uniformly mixed according to a weight ratio of 2-6:1, and the mixture is shaped by pressing in a high-pressure shaping machine; b, the mixture is placed in a carbonizing furnace, and is heated to 450 DEG C to 600 DEG C with a heating speed of 15 DEG C-20 DEG C/min, the temperature is maintained for 2 to 4h, the material is cooled to room temperature in an anoxic condition, such that a carbide is obtained; c, the carbide is crushed into particles with sizes smaller than 100 meshes, the particles are mixed with powdered iron with sizes of 20 to 60 meshes according to a weight ratio of 1:1.5-4, an adhesive with a weight of 10% to 20% of that of a total weight of the particles and the powdered iron is added to the mixture, the mixture is shaped by pressing in a high-pressure shaping machine, and is dried by baking under a temperature of 60 DEG C to 80 DEG C, such that a target product is obtained. The method and the packing provided by the invention are advantaged in that: sludge processed from printing wastewater is recycled; sludge processed from printing wastewater is carbonized and is used for producing an iron-carbide micro-electrolysis packing, such that a purpose of utilizing waste in controlling waste is achieved.
Description
Technical field
The invention belongs to the iron-carbon micro-electrolysis technical field of sewage, particularly a kind of preparation method of iron carbon Regularization micro-electrolysis stuffing.
Background technology
Treatment of dyeing wastewater mud is the product in the dyeing and printing sewage treating processes, it is the huge pollutent of a kind of character Fu Za ﹑ pollutant load Gao ﹑ Potential environmental risk, along with the year by year increase of printing and dyeing enterprise quantity and the processing water yield, the generation for the treatment of of dyeing wastewater mud is also in rapid increase.The pollution problem for the treatment of of dyeing wastewater mud has become one of subject matter of restriction printing and dyeing enterprise development.The traditional method of disposal for the treatment of of dyeing wastewater mud mainly comprises landfill, burns, fills out sea and soil utilization, in general, each department, various countries are the factors such as geographical environment, economic level, technical measures, communications and transportation according to the wood area and definite for the selection of sludge treatment mode, and can change along with the change of the raising of public's understanding and interest.These traditional disposal options have been brought into play certain effect in actual applications, but along with the more severization of environmental standard, the drawback during it is used has just obviously come out.Therefore, mud is carried out the development and use research of resource utilization, also more and extremely more urgent.
Micro electrolysis tech is according to the corrosion of metal electrochemical principle, and a kind of technique that the microbattery effect that utilization forms is processed waste water especially is widely used in the improvement of dyeing waste water, is mainly manifested on decolouring and the raising wastewater biochemical.Because the distinct advantages of this method, it has applied widely, the advantages such as treatment effect good, long service life, with low cost and convenient operating maintenance, and uses iron filings to be raw material, does not need the power consumption resource, has the meaning of " treatment of wastes with processes of wastes against one another ".
The micro-electrolysis material that adopts of little electrolysis process is generally iron filings and charcoal traditionally, to add the soda acid activation before using, being easy to passivation in the process of using hardens, again because iron and charcoal are physical contacts, between be easy to form sealing coat little electrolysis can not be proceeded and ineffective, this has caused changing continually micro-electrolysis material, and not only the large cost height of workload also affects treatment effect and the efficient of waste water.In addition, tradition micro-electrolysis material surface-area is too little also so that wastewater treatment needs long time, increased ton water cost of investment, and when little electrolysis tower was higher, the iron filings compacting effort of bottom was excessive, easily caking, may in operational process, make iron produce passivation by the surface deposition throw out, reduce treatment effect, and need regular back flushing, these have all had a strong impact on utilization and the popularization of little electrolysis process.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, a kind of preparation method of Regularization micro-electrolysis stuffing is provided, can prevent effectively that by the low and prepared Regularization micro-electrolysis stuffing of the method production cost the little electricity level of iron carbon filler from hardening and passivation, and the method can realize the processing to treatment of dyeing wastewater mud simultaneously.
The present invention also will provide a kind of Regularization micro-electrolysis stuffing, and its production cost is low, and can prevent effectively that the little electricity level of iron carbon filler from hardening and passivation, to good sewage processing effect.
For solving above technical problem, a kind of technical scheme that the present invention takes is:
A kind of preparation method of use in waste water treatment Regularization micro-electrolysis stuffing, it comprises the steps:
A, treatment of dyeing wastewater mud and wood chip are evenly mixed by weight 2～6:1, use high-pressure forming machine compression moulding;
B, the speed with 15 ℃～20 ℃/min in carbide furnace of the raw material after the step a moulding is warming up to 450 ℃～600 ℃, behind insulation 2～4h, under anoxic condition, is cooled to normal temperature and gets carbide;
C, step b gained carbide is pulverized is particle below 100 orders, it is mixed by weight 1:1.5～4 with 20～60 purpose iron powders, and add 10%～20% the tackiness agent that weight is described particle and iron powder gross weight, use high-pressure forming machine compression moulding, in 60 ℃～80 ℃ lower oven dry, namely get described use in waste water treatment Regularization micro-electrolysis stuffing.
According to a preferred aspect of the present invention, the used wood chip of step a is the wood chip of discarding, and is with low cost and can not affect the effect of last gained filler.When treatment of dyeing wastewater mud is the mud of drying, then before with the high-pressure forming machine compacting, adds entry and mix the mixture of mud and wood chip wet.
Tackiness agent described in the step c is preferably clay.Those skilled in the art should be appreciated that the tackiness agent that also can take other kind.
The another technical scheme that the present invention takes is: the preparation method of above-mentioned use in waste water treatment Regularization micro-electrolysis stuffing prepares gained use in waste water treatment Regularization micro-electrolysis stuffing.
Preferably, the granular size of use in waste water treatment Regularization micro-electrolysis stuffing is below 20 orders.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
The present invention prepares use in waste water treatment Regularization micro-electrolysis stuffing take treatment of dyeing wastewater mud as raw material, not only efficiently solve the processing problem of existing treatment of dyeing wastewater mud, and the iron-carbon micro-electrolysis filler of preparation can prevent effectively that iron-carbon micro-electrolysis filler from hardening, passivation, success realizes the treatment of wastes with processes of wastes against one another, greatly reduces the cost of wastewater treatment.In addition, the inventive method preparation is simple, and cost is low, and the gained filler easily loads.
Embodiment
The present invention will be further described in detail below in conjunction with specific embodiment, but the present invention is not limited to following examples.
Embodiment 1
Preparation method according to the Regularization micro-electrolysis stuffing of the present embodiment comprises the steps:
A, the treatment of dyeing wastewater mud of drying is ground, quality percentage composition according to mud is 80%, the quality percentage composition of discarded wood chip is that 20% ratio is mixed the two, and add a small amount of moisture raw material is mixed wet, then compression moulding on high-pressure forming machine;
The raw material of b, just moulding is warming up to 500 ℃ with 20 ℃/min in carbide furnace, the insulation 4h after, and under anoxic condition, be cooled to normal temperature (20 ~ 25 ℃) carbide;
C, step b gained carbide is pulverized is particle below 100 orders, be 40% with itself and 20-60 purpose iron powder according to the quality percentage composition of particle, the percentage composition of iron powder is 60% mixing, then add 20% clay of weight particles and iron powder gross weight, adopt high-pressure forming machine compression moulding, 60 ℃ of lower oven dry, obtained the Regularization micro-electrolysis stuffing of machine-processed moulding at last.
Using this Regularization filler and process the printing and dyeing comprehensive wastewater, is 2600 at initial COD, under the condition that colourity is 220 times, process through micro-electrolysis stuffing, when the residence time was 120min, the COD clearance reached 45%, chroma removal rate reaches 92%, and through moving 150 days continuously, effect stability.
Embodiment 2
Preparation method according to the Regularization micro-electrolysis stuffing of the present embodiment comprises the steps:
A, the treatment of dyeing wastewater mud of drying is ground, quality percentage composition according to mud is 75%, the quality percentage composition of discarded wood chip is that 25% ratio is mixed the two, and add a small amount of moisture raw material is mixed wet, then compression moulding on high-pressure forming machine;
B, the raw material of moulding is warming up to 600 ℃ of insulation 3h with 15 ℃/min in carbide furnace, and under anoxic condition, be cooled to normal temperature (20 ~ 25 ℃) carbide;
C, step b gained carbide is pulverized is particle below 100 orders, be 30% with itself and 20-60 purpose iron powder according to the quality percentage composition of particle, the percentage composition of iron powder is 70% mixing, then add 15% clay of weight particles and iron powder gross weight, adopt high-pressure forming machine compression moulding, 60 ℃ of lower oven dry, obtained the Regularization micro-electrolysis stuffing of machine-processed moulding at last;
Using this Regularization filler and process the printing and dyeing comprehensive wastewater, is 2600 at initial COD, under the condition that colourity is 220 times, process through micro-electrolysis stuffing, when the residence time was 120min, the COD clearance reached 42%, chroma removal rate reaches 95%, and through moving 150 days continuously, effect stability.
Embodiment 3
Preparation method according to the Regularization micro-electrolysis stuffing of the present embodiment comprises the steps:
A, the treatment of dyeing wastewater mud of drying is ground, quality percentage composition according to mud is 70%, the quality percentage composition of discarded wood chip is that 30% ratio is mixed the two, and add a small amount of moisture raw material is mixed wet, then compression moulding on high-pressure forming machine;
B, the raw material of moulding is warming up to 450 ℃ of insulation 2h with 15 ℃/min in carbide furnace, and under anoxic condition, be cooled to normal temperature (20 ~ 25 ℃) carbide;
C, step b gained carbide is pulverized is particle below 100 orders, be 20% with itself and 20-60 purpose iron powder according to the quality percentage composition of particle, the percentage composition of iron powder is 80%, then add 10% clay of weight particles and iron powder gross weight, use high-pressure forming machine compression moulding, 60 ℃ of lower oven dry, obtained the Regularization micro-electrolysis stuffing of machine-processed moulding at last.
Using this Regularization filler and process the printing and dyeing comprehensive wastewater, is 2600 at initial COD, under the condition that colourity is 220 times, process through micro-electrolysis stuffing, when the residence time was 120min, the COD clearance reached 41%, chroma removal rate reaches 95%, and through moving 150 days continuously, effect stability.
Above the present invention has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; the equivalence that all spirit according to the present invention are done changes or modifies, and all should be encompassed in protection scope of the present invention
Claims (6)
1. the preparation method of a use in waste water treatment Regularization micro-electrolysis stuffing, it is characterized in that: described preparation method comprises the steps:
A, treatment of dyeing wastewater mud and wood chip are evenly mixed by weight 2～6:1, use high-pressure forming machine compression moulding;
B, the speed with 15 ℃～20 ℃/min in carbide furnace of the raw material after the step a moulding is warming up to 450 ℃～600 ℃, behind insulation 2～4h, under anoxic condition, is cooled to normal temperature and gets carbide;
C, step b gained carbide is pulverized is particle below 100 orders, it is mixed by weight 1:1.5～4 with 20～60 purpose iron powders, and add 10%～20% the tackiness agent that weight is described particle and iron powder gross weight, use high-pressure forming machine compression moulding, in 60 ℃～80 ℃ lower oven dry, namely get described use in waste water treatment Regularization micro-electrolysis stuffing.
2. the preparation method of use in waste water treatment Regularization micro-electrolysis stuffing according to claim 1 is characterized in that: the wood chip of described wood chip for discarding.
3. the preparation method of use in waste water treatment Regularization micro-electrolysis stuffing according to claim 1, it is characterized in that: among the step a, treatment of dyeing wastewater mud is dry mud, before with the high-pressure forming machine compacting, adds entry and mixes the mixture of mud and wood chip wet.
4. the preparation method of use in waste water treatment Regularization micro-electrolysis stuffing according to claim 1, it is characterized in that: the tackiness agent described in the step c is clay.
5. use in waste water treatment Regularization micro-electrolysis stuffing, it is characterized in that: it is prepared by the described preparation method of each claim in the claim 1 to 4.
6. use in waste water treatment Regularization micro-electrolysis stuffing according to claim 5, it is characterized in that: filler particle size is below 20 orders.
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| CN102826829A (en) * | 2012-08-21 | 2012-12-19 | 山东大学 | Ceramsites for treating cyclohexanone waste water and its preparation method and use |
| CN103253741B (en) * | 2013-05-10 | 2014-01-01 | 山东大学 | Method for preparing anti-hardening granular ceramic iron-carbon micro-electrolysis filler from industrial wastes |
| CN106139835A (en) * | 2015-04-16 | 2016-11-23 | 杭州中兵环保股份有限公司 | A kind of preparation method of iron-carbon micro-electrolysis filler |
| CN105110427B (en) * | 2015-09-30 | 2017-12-01 | 东营国安化工有限公司 | A kind of compound micro-electrolysis stuffing and preparation method and application |
| CN105502588A (en) * | 2015-11-26 | 2016-04-20 | 中国科学院广州能源研究所 | Iron-carbon filler pretreated by micro-electrolysis of industrial wastewater and preparation method thereof |
| CN107021547B (en) * | 2017-05-10 | 2021-03-19 | 代纯伟 | Preparation method of iron-carbon micro-electrolysis filler and product thereof |
| CN110395861A (en) * | 2019-08-29 | 2019-11-01 | 宜兴市创新环保有限公司 | A method of it is granulated using oily sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101823792A (en) * | 2009-03-06 | 2010-09-08 | 中国地质大学（北京） | Device, system and method for vertical multilevel soil permo-treatment of sewage and mixed fillers |
| CN101941779A (en) * | 2010-09-09 | 2011-01-12 | 同济大学 | Automatic aeration small-size sewage trickling-filtration purification tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101823792A (en) * | 2009-03-06 | 2010-09-08 | 中国地质大学（北京） | Device, system and method for vertical multilevel soil permo-treatment of sewage and mixed fillers |
| CN101941779A (en) * | 2010-09-09 | 2011-01-12 | 同济大学 | Automatic aeration small-size sewage trickling-filtration purification tower |
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