CN109354142A - A kind of Inorganic complex coagulant and preparation method thereof for high-efficiency sewage processing - Google Patents
A kind of Inorganic complex coagulant and preparation method thereof for high-efficiency sewage processing Download PDFInfo
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- CN109354142A CN109354142A CN201811297216.3A CN201811297216A CN109354142A CN 109354142 A CN109354142 A CN 109354142A CN 201811297216 A CN201811297216 A CN 201811297216A CN 109354142 A CN109354142 A CN 109354142A
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- coagulant
- ldhs
- sewage processing
- inorganic complex
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Abstract
The invention discloses a kind of Inorganic complex coagulants and preparation method thereof for high-efficiency sewage processing, calculate, are made as mass fraction by following components: 20-25 parts of LDHs, Mg (OH)25-30 parts, CaCO370-150 parts, 1-2 parts of ball particle, preparation method includes the following steps: step 1, weighs each component, obtains coagulant host agent after mixing；Step 2 weighs ball particle, is sufficiently mixed with the coagulant host agent；Step 3 grinds the mixture that the step 2 obtains；Step 4 after being packed the step 3 sieving powder, is saved under dry room temperature.Inorganic composite flocculant of the present invention is not only able to reach substep and adds inorganic and organic flocculant even preferably flocculating effect on an equal basis, and since disposable dosing simplifies operating procedure, equipment investment cost and cost of water treatment are reduced on the basis of improving treatment effeciency.
Description
Technical field
The present invention relates to water-treatment technology fields, and in particular to a kind of Inorganic complex coagulant for high-efficiency sewage processing
Preparation method.
Background technique
Coagulation process is that most widely used, most common unit operating technology, coagulating treatment effect are straight in engineering of water treatment
Connect operation process, final outflow water quality and the cost for determining follow-up processing flow.Flocculating effect quality largely takes
Certainly in flocculant.Flocculant experienced metal salt flocculant (aluminium salt, molysite etc.), organic polymer coargulator (polyacrylamide,
Poly dimethyl diene ammonium chloride etc.), inorganic polymer flocculant (poly-aluminium, Polyferric Sulfate etc.), inorganic composite flocculant (poly- sial,
Poly- ferrosilicon etc.), the developing stage such as inorganic-organic composite flocculating agent (mixture of aluminium or ferric flocculant and organic flocculant),
In, inorganic polymer flocculant and organic polymer coargulator are in current water process using more flocculant.Inorganic high score
Flocculant price is relatively cheap, but has molecular weight low, and stability is poor in water, and input amount is high, generates the disadvantages of sludge quantity is big；
Organic polymer coargulator have functional group it is more, molecular weight is big, and dosage is few, and sinking speed is fast, sludge quantity applied widely it is few and
It is easy to the advantages that being dehydrated.
For both in summary the advantages of, will be inorganic and organic high frequently with the method added step by step in water treatment procedure
Molecular flocculant is combined to reach preferable treatment effect, although this has achieved the purpose that have complementary advantages to a certain extent,
Consequent is that operating procedure is cumbersome, and equipment investment is big, and use cost is relatively higher etc..
In view of defect existing for above-mentioned existing water treatment coagulant, the present inventor is based on being engaged in such product design system
Practical experience and professional knowledge abundant for many years are made, and cooperates the utilization of scientific principle, is subject to research and innovation, actively to found one kind
The preparation method of Inorganic complex coagulant for high-efficiency sewage processing, makes it with more practicability.By constantly studying, setting
Meter, and studied repeatedly sample and improve after, create the present invention having practical value finally.
Summary of the invention
It is a primary object of the present invention to, overcome defect existing for existing water treatment coagulant, and one kind is provided and is used for
The preparation method of the Inorganic complex coagulant of high-efficiency sewage processing, being not only able to reach substep, to add inorganic and organic flocculant same
Deng even preferably flocculating effect, and since disposable dosing simplifies operating procedure, on the basis of improving treatment effeciency
Equipment investment cost and cost of water treatment are reduced, thus more suitable for practical, and with the utility value in industry.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.
A kind of Inorganic complex coagulant for high-efficiency sewage processing, calculates as mass fraction, is made by following components:
20-25 parts of LDHs, 70-150 parts of 5-30 parts of Mg (OH) 2, CaCO3,1-2 parts of ball particle.
Further, the ball particle is activated silica or atlapulgite.
Further, LDHs is Fe-Ni-Fe-LDHs, Zn-Mg-Al-LDHs, Zn-Al-Ce-LDHs or nanometer MgAl-
The mixture of any one or two kinds in LDHs.
A kind of preparation method of Inorganic complex coagulant for high-efficiency sewage processing includes the following steps:
Step 1 weighs LDHs, Mg (OH) 2, CaCO3, obtains coagulant host agent after mixing；
Step 2 weighs ball particle, obtains the coagulant host agent with step 1 and is sufficiently mixed；
Step 3 grinds the mixture that the step 2 obtains；
Step 4 after being packed the step 3 sieving powder, is saved under dry room temperature.
Further, ball particle is gradually added under coagulant host agent stirring.
Further, it is ground in grinder in step 3, and milling time is 1-3h.
Further, the powder in step 3 by grinding crosses 200 mesh standard sieves, removes large particulate matter.
By adopting the above technical scheme, it can be realized following technical effect:
1), inorganic composite flocculant of the present invention, which is not only able to reach, adds inorganic and organic flocculant on an equal basis even more step by step
Good flocculating effect, and since disposable dosing simplifies operating procedure, it reduces and sets on the basis of improving treatment effeciency
Standby cost of investment and cost of water treatment；
2), inorganic composite flocculant application range of the present invention is wider, and turbidity removal decolorizing effect is good, can be widely applied to water supply
The processes such as purification, the turbidity removal in wastewater treatment, decoloration, separation of solid and liquid, pH value adaptability is big, has for various wastewater good
Clean-up effect can be realized least cost, most simple process and quickly administer, realizes qualified discharge；
3), inorganic composite flocculant of the present invention has very high stability in water, and this structure is that the present invention is inorganic multiple
The advantages of closing the maximum feature that flocculant is different from other flocculants, inorganic composite flocculant can be given full play to, it is significant to improve
Flocculating effect has fast and efficiently flocculating effect to substantially increase flocculation ability, different according to water purification agent prescription,
It can achieve removal COD, BOD, SS, TP, NH respectively；The purpose of the pollutants such as-N, can also reach simultaneously to many kinds of substance has
Effect removal, COD removal rate is discharged COD from 5000-12000mg/L and drops to 400- up to 80-92% after single-stage separation
1500mg/L；
4), when coagulating waste water split-phase react with enrichment, use with strong points, split-phase rapidly, solid-liquid distribution ratio greatly,
The Fe-Ca-Mg system compound flocculating agent that solid phase degree of enrichment is high and dosage is with degree of enrichment with good linear dependence, should
Flocculating agent prepares raw material and is easy to get, easy to operate, can carry out sub-prime formula and preparation for waste water fluctuation, throw in addition to eliminating
The dust pollution of added-time protects work situation, and the coccoid that can be also prepared into a kind of dustless easy disintegrating uses.
5) it, is easy to implement: without using specially treated facilities and equipment, lectotype selection being made to routinize, while can be substantially
Degree reduces subsequent biochemical and handles load, reduces the investment reduction of biochemical facility and operating cost.
Specific embodiment
Further to illustrate the present invention to reach the technical means and efficacy that predetermined goal of the invention is taken, to according to this
The preparation method of Inorganic complex coagulant its specific embodiment, feature and its function for high-efficiency sewage processing that invention proposes
Effect, detailed description is as follows.
A kind of Inorganic complex coagulant for high-efficiency sewage processing, which is characterized in that calculate as mass fraction, by following
Component is made: 20-25 parts of LDHs, 70-150 parts of 5-30 parts of Mg (OH) 2, CaCO3,1-2 parts of ball particle.Ball particle is
Activated silica or atlapulgite.LDHs is Fe-Ni-Fe-LDHs, Zn-Mg-Al-LDHs, Zn-Al-Ce-LDHs or nanometer MgAl-
The mixture of any one or two kinds in LDHs.
A kind of preparation method of the Inorganic complex coagulant for high-efficiency sewage processing, includes the following steps:
Step 1 weighs LDHs, Mg (OH)2、CaCO3Each component obtains coagulant host agent after mixing；
Step 2 weighs ball particle, obtains the coagulant host agent with step 1 and is sufficiently mixed；
Step 3 grinds the mixture that the step 2 obtains；
Step 4 after being packed the step 3 sieving powder, is saved under dry room temperature.
As a preferred embodiment, activated silica or the atlapulgite gradually add under coagulant host agent stirring
Enter.
As a preferred embodiment, it is ground in grinder in step 3, and milling time is 1-3h.
As a preferred embodiment, the powder in step 3 by grinding crosses 200 mesh standard sieves, removes large particulate matter.
In order to further illustrate the present invention, it handles combined with specific embodiments below provided by the present invention for high-efficiency sewage
Inorganic complex coagulant and preparation method thereof be described in detail, but should not be construed as to the scope of the present invention
It limits.
Embodiment 1
Fe-Ni-Fe-LDHs20 parts, Mg (OH)25 parts, 70 parts of CaCO3,1 part of atlapulgite；
Inorganic complex coagulant is prepared according to the following steps:
Step 1 is calculated according to mass fraction, weighs 20 parts of Fe-Ni-Fe-LDHs, 5 parts of Mg (OH)2, 70 parts of CaCO3, mix
Coagulant host agent is obtained after closing uniformly；
Step 2 weighs 1 part of atlapulgite, is sufficiently mixed with coagulant host agent；
Step 3, the mixture for obtaining step 2 are ground, milling time 2h；
Step 4 after being packed step 3 sieving powder, is saved under dry room temperature.
Embodiment 2
Zn-Mg-Al-LDHs20 parts, Mg (OH)25 parts, 70 parts of CaCO3,2 parts of atlapulgite；
Inorganic complex coagulant is prepared according to the following steps:
Step 1 is calculated according to mass fraction, weighs 25 parts of Zn-Mg-Al-LDHs, 30 parts of Mg (OH)2, 150 parts of CaCO3,
Coagulant host agent is obtained after mixing；
Step 2 weighs 2 parts of atlapulgites, is sufficiently mixed with coagulant host agent；
Step 3, the mixture for obtaining step 2 are ground, milling time 3h；
Step 4 after being packed step 3 sieving powder, is saved under dry room temperature.
Embodiment 3
Zn-Al-Ce-LDHs23 parts, Mg (OH)220 parts, 90 parts of CaCO3,2 parts of activated silica；
Inorganic complex coagulant is prepared according to the following steps:
Step 1 is calculated according to mass fraction, weighs 23 parts of Zn-Al-Ce-LDHs, 20 parts of Mg (OH)2, 90 parts of CaCO3, mix
Coagulant host agent is obtained after closing uniformly；
Step 2 weighs 2 parts of activated silicas, is sufficiently mixed with coagulant host agent；
Step 3, the mixture for obtaining step 2 are ground, milling time 1h；
Step 4 after being packed step 3 sieving powder, is saved under dry room temperature.
Embodiment 4
MgAl-LDHs25 parts of nanometer, Mg (OH)220 parts, 80 parts of CaCO3,2 parts of activated silica；
Inorganic complex coagulant is prepared according to the following steps:
Step 1 is calculated according to mass fraction, weighs 25 parts of nanometer MgAl-LDHs, 20 parts of Mg (OH)2, 80 parts of CaCO3, mix
Coagulant host agent is obtained after closing uniformly；
Step 2 weighs 2 parts of activated silicas, is sufficiently mixed with coagulant host agent；
Step 3, the mixture for obtaining step 2 are ground, milling time 2.5h；
Step 4 after being packed step 3 sieving powder, is saved under dry room temperature.
Comparative example 1
Changzhou Xin Yi Textile Co., Ltd. dyeing waste water is handled, waste water is provided by the said firm's water treatment stage, is cylinder
Dye and stamp produce waste water.Be respectively adopted PAFS in the compound system of PAC, Al-Fe in PFS, Al system in Fe system, diatomite with
And bentonite comparative evaluation's separating effect parallel with the progress of Fe-Ca-Mg system prepared by the present invention compound flocculating agent.
Lock out operation parallel condition are as follows: each processing water 2000ml, each material are added by same dosage, adjust pH=
10-11.6 carries out coagulating, uses the self-contained alkaline agent of agent due to prepared by the present invention, adjusts without additive.
It is above-mentioned after the reaction was completed, carry out vacuum filtration separation using middling speed qualitative filter paper.Later, the solid phase mud cake of acquisition is dry
After dry, and the indexs such as dry mud amount and extractable object amount are measured, the liquid phase waste water ratio filtered out is to color and measurement COD index.
It is above-mentioned to add material, it is such as leading to give 8-12min reaction time, for example suction-operated principle with agent with cohesion principle
The 60min reaction time is given with agent for leading, operation carries out at room temperature.
Comparative example 2
Waste water used is Jiangsu new light printing and dyeing Co., Ltd, and dyeing fabric waste water compared solid absorbent, kaolinite respectively
Soil, clay, atlapulgite, 4A zeolite, magnesia, magnesium hydroxide, aluminium hydroxide.
Water 1000ml is handled, mixing phase reaction adjusts pH=11, coagulation enrichment reaction 40min.Specifically,
It is prepared by the present invention to use the self-contained alkaline agent of agent, it is adjusted without additive.
Vacuum filtration separation is carried out using middling speed qualitative filter paper after the reaction was completed to above-mentioned, and the solid phase mud cake of acquisition is dry
Nicotine extraction is carried out afterwards, and measures the indexs such as dry mud amount and extractable object amount, and the liquid phase waste water ratio filtered out is to color and survey
Determine the indexs such as COD.
Test result is as follows table
1 test result of comparative example
2 test result of comparative example
By above-mentioned test specification, flocculant provided by the invention is not only able to achieve the effect that organic flocculant, moreover it is possible to
Enough achieve the effect that inorganic flocculating agent, and in the index of COD, further below organic flocculant and inorganic flocculating agent, has
Better wastewater treatment efficiency, and it is more economical applicable, there is fabulous industrial value.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (7)
1. a kind of Inorganic complex coagulant for high-efficiency sewage processing, which is characterized in that calculate as mass fraction, by with the following group
Divide and is made: 20-25 parts of LDHs, Mg (OH)25-30 parts, CaCO370-150 parts, 1-2 parts of ball particle.
2. the Inorganic complex coagulant according to claim 1 for high-efficiency sewage processing, which is characterized in that the step
Ball particle described in 2 is activated silica or atlapulgite.
3. the Inorganic complex coagulant according to claim 1 for high-efficiency sewage processing, which is characterized in that the LDHs
It is any one in Fe-Ni-Fe-LDHs, Zn-Mg-Al-LDHs, Zn-Al-Ce-LDHs or nanometer MgAl-LDHs or two kinds
Mixture.
4. a kind of preparation method of the Inorganic complex coagulant for high-efficiency sewage processing, which is characterized in that
Step 1 weighs LDHs, Mg(OH)2、CaCO3, coagulant host agent is obtained after mixing；
Step 2 weighs ball particle, obtains the coagulant host agent with step 1 and is sufficiently mixed；
Step 3 grinds the mixture that the step 2 obtains；
Step 4 after being packed the step 3 sieving powder, is saved under dry room temperature.
5. the preparation method of the Inorganic complex coagulant according to claim 4 for high-efficiency sewage processing, feature exist
In the ball particle is gradually added under coagulant host agent stirring.
6. the preparation method of the Inorganic complex coagulant according to claim 4 for high-efficiency sewage processing, feature exist
In, ground in grinder in the step 3, and milling time be 1-3h.
7. the preparation method of the Inorganic complex coagulant according to claim 4 for high-efficiency sewage processing, feature exist
In the powder in the step 3 by grinding crosses 200 mesh standard sieves, removes large particulate matter.
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| CN201811297216.3A CN109354142A (en) | 2018-11-01 | 2018-11-01 | A kind of Inorganic complex coagulant and preparation method thereof for high-efficiency sewage processing |
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| CN201811297216.3A CN109354142A (en) | 2018-11-01 | 2018-11-01 | A kind of Inorganic complex coagulant and preparation method thereof for high-efficiency sewage processing |
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| EP1251117B1 (en) * | 2000-07-27 | 2011-07-13 | Mitsubishi Materials Electronic Chemicals Co., Ltd. | Method of treating fluorine compound and treated substance |
| CN102317213A (en) * | 2009-05-29 | 2012-01-11 | 株式会社东芝 | Water purification material, water purification method, phosphate fertilizer precursor, and method for manufacturing a phosphate fertilizer precursor |
| CN103922453A (en) * | 2014-05-14 | 2014-07-16 | 山东盛阳集团有限公司 | Flocculating agent for coking wastewater and preparation method thereof and application thereof |
| CN106458633A (en) * | 2014-06-18 | 2017-02-22 | 荷兰联合利华有限公司 | Layered double hydroxides for purification of water |
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2018
- 2018-11-01 CN CN201811297216.3A patent/CN109354142A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020001922A (en) * | 2000-06-01 | 2002-01-09 | 현동호 | Method of producing a composite inorganic coagulant by using slag |
| EP1251117B1 (en) * | 2000-07-27 | 2011-07-13 | Mitsubishi Materials Electronic Chemicals Co., Ltd. | Method of treating fluorine compound and treated substance |
| CN102317213A (en) * | 2009-05-29 | 2012-01-11 | 株式会社东芝 | Water purification material, water purification method, phosphate fertilizer precursor, and method for manufacturing a phosphate fertilizer precursor |
| CN101731736A (en) * | 2010-01-19 | 2010-06-16 | 武汉科技学院 | Solid-liquid enrichment separation method for tobacco sheet wastewater in paper-making method |
| CN103922453A (en) * | 2014-05-14 | 2014-07-16 | 山东盛阳集团有限公司 | Flocculating agent for coking wastewater and preparation method thereof and application thereof |
| CN106458633A (en) * | 2014-06-18 | 2017-02-22 | 荷兰联合利华有限公司 | Layered double hydroxides for purification of water |
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