CN105883996B - A kind of modified banana skin coagulant and its preparation process - Google Patents
A kind of modified banana skin coagulant and its preparation process Download PDFInfo
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- CN105883996B CN105883996B CN201610297741.XA CN201610297741A CN105883996B CN 105883996 B CN105883996 B CN 105883996B CN 201610297741 A CN201610297741 A CN 201610297741A CN 105883996 B CN105883996 B CN 105883996B
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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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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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
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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Abstract
The invention belongs to water treatment coagulant field, it is related to a kind of modified banana skin coagulant and its preparation process.Above-mentioned property banana skin coagulant is that banana skin is impregnated through sodium hydroxide solution, ferrous sulfate heptahydrate is modified to obtain.The preparation process of above-mentioned modified banana skin coagulant, steps are as follows：Sodium hydroxide solution is added in powdered form banana skin, leaches, obtains banana skin extracting solution；Ferrous sulfate heptahydrate is mixed with water, oxidant is added, obtains modifier solution；Banana skin extracting solution is mixed with modifier solution；It is selectively added stabilizer, modified banana skin coagulant product is made.The technology of the present invention can prepare the more excellent modification banana skin coagulant of a kind of high stability, water treatment efficiency.Low energy consumption by the present invention, production process non-secondary pollution, and production equipment and simple for process, economic, practical is easy to implement.
Description
Technical field
The invention belongs to water treatment coagulant fields, particularly, are related to using banana skin and inorganic elements as one kind of raw material
Modified banana skin coagulant.Moreover, it relates to the preparation process of above-mentioned modified banana skin coagulant.
Background technology
Coagulation process is one of the core process paid close attention to the most in domestic and international waste water and Water purification, have it is simple, efficiently,
Economic dispatch advantage, and coagulant is the main substance of coagulation process, the sludge components of coagulability and generation are for single
Main body or advanced treatment process effect and cost, the subsequent processing of sludge of coagulation process effect or even entire water factory etc. are all to pass
It is important.Therefore, nontoxic, efficient, economic coagulant research and development and application just become the important research content of water-treatment technology field
And focus.In recent years, coagulant is very rapid in China's development, type is more and more, and research is also in diversification.By chemistry
Component coagulant can be divided into four major class of inorganic, organic, microorganism and compound coagulant.Inorganic coagulant price is relatively low, stability
Preferably, tool has great advantage, but has a degree of negative effect to biology and environment.Artificial synthesized organic polymer is mixed
Solidifying agent has the characteristics that efficient, dosage is few, but residue will also result in very big harm to biology and environment.Microorganism coagulant
Substantially nontoxic, but from its preparation, store to using and all have unstability, therefore be also substantially at conceptual phase at present, away from
From the popularization of its scale, there is still a need for the explorations of longer period of time.Abundant, cheap, the easy drop of natural organic high-molecular physical resources
It solves, is nontoxic, there is good environmental acceptance, and for the smaller or nontoxic raw water of toxicity, the dirt that water process generates later
Mud completely can be with farmland reuse, therefore has obtained the extensive concern of countries in the world water treatment field expert in recent years, but stablizes
Bad property is the intrinsic weak tendency of such coagulant.Therefore by natural organic high-molecular and other organic knots of inorganic or organic element
It closes, prepares the research direction that the compound coagulant that stability is preferable, effect is more excellent is always such coagulant.
The cost that coagulant is prepared using waste as primary raw material is relatively low, and meets the thinking of the treatment of wastes with processes of wastes against one another, in recent years
To many researchs, and achieve a large amount of achievements.Agriculture and forestry organic waste material is growing in the application range of water treatment field in recent years, than
Such as application of husk, rice straw, straw, cornstalk, peanut shell, bagasse, fruit peel.Banana skin is the one of agriculture and forestry organic waste material
Kind, it is the outside rind of banana, weight can account for 40% of its fruit weight or so.Agricultural industrialization structure is sent out in recent years
Great changes are given birth to, banana production is significantly increased therewith, and China's banana total output reaches 11,790,000 tons within 2014, thus causes big
The discarding for measuring banana skin, a degree of negative effect is caused to environment.Banana skin has also obtained very big in water treatment field
The concern of degree, but about banana skin in the application of water treatment field relate generally to adsorptivity at present and directly using two generous
Face.There are some patents utilized about banana skin adsorptivity both at home and abroad, such as：A kind of banana skin for desulfurization and dedusting, which is modified, lives
Property charcoal diatomite particle and preparation method thereof（CN201510191618.5）, a kind of pyromellitic acid anhydride modification banana skin absorption
The preparation of agent（CN100406396C）, the method for ammonia nitrogen adsorbent and the application of ammonia nitrogen adsorbent are prepared using banana skin
（CN201310168967.6）, dye sorbent made of a kind of banana skin（CN201210121603.8）.Wherein CN
100406396C provides one kind using banana skin as primary raw material, changes by the pyromellitic dianhydride of modifying agent of pyromellitic dianhydride
The preparation method of property banana skin adsorbent；CN201310168967.6 provides a kind of only-be crushed-impregnated-by dehydration and washes
It washs, the method for preparing ammonia nitrogen adsorbent using banana skin；CN201210121603.8 provide it is a kind of using fermentation method by banana
Leather for dye sorbent method.At present both at home and abroad there are also about water treatment procedure directly utilize banana skin patent,
Such as：Utilize the method for banana skin processing waste water containing chrome（CN201210009635.9）, cook liquid using banana skin and remove water body
The method of middle Microcystis aeruginosa（CN201110442551.X）.The above-mentioned application technology about banana skin in water treatment field is not directed to
Using banana skin and inorganic elements as a kind of modified banana skin coagulant of raw material, it is also not directed to above-mentioned modified banana skin coagulant
Preparation process.
Invention content
The purpose of the present invention is overcome the problems, such as that natural organic high-molecular coagulant stability is poor and improve its coagulation effect
Fruit, technical problems to be solved are to provide a kind of modified banana skin coagulant and its preparation process.
The technical solution adopted by the present invention is：
The present invention provides a kind of modified banana skin coagulant, modified banana skin coagulant is that banana skin is molten through sodium hydroxide
Liquid impregnates, ferrous sulfate heptahydrate is modified to obtain.
Invention further provides the preparation processes of above-mentioned modified banana skin coagulant, include the following steps, following each component
Equal percentage：
A. by banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare；
B. under 50 revs/min ~ 100 revs/min of mixing speed, the hydrogen for being 2% ~ 10% by 55% ~ 85% mass fraction
Sodium hydroxide solution is added in above-mentioned 2.5% ~ 25% powdered form banana skin, is stirred 3 minutes ~ 7 minutes, is obtained soak, then
Heating 0.3 hour ~ 3 hours, heating temperature are 55 DEG C ~ 65 DEG C, obtain banana skin extracting solution, spare；
C. under 100 revs/min ~ 200 revs/min of mixing speed, by 5% ~ 13% ferrous sulfate heptahydrate and 1% ~ 10%
Water mixing, stirring 5 minutes ~ 15 minutes after, be added 0.2% ~ 0.6% oxidant, persistently stir 3 minutes ~ 10 minutes, obtain
Modifier solution, it is spare；
D. under 100 revs/min ~ 200 revs/min of mixing speed, above-mentioned banana skin extracting solution and modifying agent is molten
Liquid mixes, and stirs 5 minutes ~ 10 minutes, then heats 10 minutes ~ 30 minutes, and heating temperature is 30 DEG C ~ 50 DEG C, is cooled to room temperature,
Again under 50 revs/min ~ 100 revs/min of mixing speed, 0% ~ 0.025% stabilizer is added, persistently stirs 1 minute ~ 3 points
Clock stands curing 2 hours ~ 48 hours at room temperature, and modified banana skin liquid coagulant is made；
E. pulverulent solids product is made in above-mentioned modified banana skin liquid coagulant；
The oxidant is the sodium chlorate solid of technical grade or liquor natrii hypochloritis that mass fraction is 10% ~ 13% or matter
Measure the hydrogen peroxide that score is 25% ~ 35%；
The stabilizer by sodium tartrate and the mass fraction of technical grade be 10% ~ 13% liquor natrii hypochloritis with effectively
The Kathon CG solution composition that the mass fraction of component is 14% ~ 15%, the weight of sodium tartrate and liquor natrii hypochloritis and Kathon CG solution
Than being 1：2：0.5.
The invention has the advantages that：
1, modification banana skin coagulant of the invention is using banana skin and industrial sodium hydroxide as raw material, with industry byproduct
Ferrous sulfate heptahydrate is modifying agent, and the cost of preparation is relatively low, and combines the advantage of natural organic high-molecular and inorganic ferro element,
Improve the stability and coagulation effect of coagulant.
2, modification banana skin coagulant of the invention can be applied to the fields such as drinking water, municipal sewage, industrial wastewater.
3, it is 30 DEG C ~ 65 DEG C that the preparation process of modification banana skin coagulant of the invention, which uses normal pressure, temperature of reaction kettle, energy
Consume low, production process non-secondary pollution, production equipment and simple for process, economic, practical is easy to implement.
Specific implementation mode
Present invention is further described in detail with reference to embodiments.
Embodiment 1
By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare.At 50 revs/min ~ 100 revs/min
Mixing speed under, by the mass fraction of 35L be 2% sodium hydroxide solution be added in the powdered form banana skin of above-mentioned 5Kg,
Stirring 5 minutes, obtains soak, then heats 2 hours, and heating temperature is 60 DEG C, obtains banana skin extracting solution, spare.100
Rev/min ~ 200 revs/min of mixing speed under, the ferrous sulfate heptahydrate of 3Kg is mixed with the water of 1L, stirring 15 minutes it
Afterwards, the oxidant of 0.1Kg is added, persistently stirs 3 minutes, obtains modifier solution, it is spare.At 100 revs/min ~ 200 revs/min
Under the mixing speed of clock, above-mentioned banana skin extracting solution is mixed with modifier solution, stirs 5 minutes, then heat 30 minutes,
Heating temperature is 50 DEG C, stands curing 48 hours at room temperature, and modified banana skin liquid coagulant is made.
Embodiment 2
By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare.At 50 revs/min ~ 100 revs/min
Mixing speed under, by the mass fraction of 60L be 5% sodium hydroxide solution be added in the powdered form banana skin of above-mentioned 5Kg,
Stirring 5 minutes, obtains soak, then heats 1 hour, and heating temperature is 55 DEG C, obtains banana skin extracting solution, spare.100
Rev/min ~ 200 revs/min of mixing speed under, the ferrous sulfate heptahydrate of 10Kg is mixed with the water of 5L, stirring 15 minutes it
Afterwards, the oxidant of 0.4Kg is added, persistently stirs 10 minutes, obtains modifier solution, it is spare.At 100 revs/min ~ 200 revs/min
Under the mixing speed of clock, above-mentioned banana skin extracting solution is mixed with modifier solution, stirs 10 minutes, then heat 20 points
Clock, heating temperature are 40 DEG C, are cooled to room temperature, then under 50 revs/min ~ 100 revs/min of mixing speed, and 0.02Kg is added
Stabilizer, persistently stir 1 minute, stand curing 10 hours at room temperature, modified banana skin liquid coagulant is made.
Embodiment 3
By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare.At 50 revs/min ~ 100 revs/min
Mixing speed under, by the mass fraction of 23L be 10% sodium hydroxide solution be added in the powdered form banana skin of above-mentioned 8Kg,
Stirring 3 minutes, obtains soak, then heats 0.3 hour, and heating temperature is 60 DEG C, obtains banana skin extracting solution, spare.
Under 100 revs/min ~ 200 revs/min of mixing speed, the ferrous sulfate heptahydrate of 3Kg is mixed with the water of 2L, is stirred 10 minutes
Later, the oxidant of 0.2Kg is added, persistently stirs 10 minutes, obtains modifier solution, it is spare.100 revs/min ~ 200 turns/
Under the mixing speed of minute, above-mentioned banana skin extracting solution is mixed with modifier solution, stirs 5 minutes, then heat 30 points
Clock, heating temperature are 50 DEG C, are cooled to room temperature, then under 50 revs/min ~ 100 revs/min of mixing speed, and 0.007Kg is added
Stabilizer, persistently stir 3 minutes, stand curing 48 hours at room temperature, modified banana skin liquid coagulant is made.
Embodiment 4
By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare.At 50 revs/min ~ 100 revs/min
Mixing speed under, by the mass fraction of 35L be 2% sodium hydroxide solution be added in the powdered form banana skin of above-mentioned 5Kg,
Stirring 3 minutes, obtains soak, then heats 2 hours, and heating temperature is 60 DEG C, obtains banana skin extracting solution, spare.100
Rev/min ~ 200 revs/min of mixing speed under, the ferrous sulfate heptahydrate of 3Kg is mixed with the water of 1L, stirring 15 minutes it
Afterwards, the oxidant of 0.1Kg is added, persistently stirs 3 minutes, obtains modifier solution, it is spare.At 100 revs/min ~ 200 revs/min
Under the mixing speed of clock, above-mentioned banana skin extracting solution is mixed with modifier solution, stirs 5 minutes, then heat 30 minutes,
Heating temperature is 50 DEG C, stands curing 48 hours at room temperature, and modified banana skin liquid coagulant is made.By above-mentioned modified banana skin
Pulverulent solids product is made in liquid coagulant.
Embodiment 5
By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare.At 50 revs/min ~ 100 revs/min
Mixing speed under, by the mass fraction of 60L be 5% sodium hydroxide solution be added in the powdered form banana skin of above-mentioned 5Kg,
Stirring 5 minutes, obtains soak, then heats 1 hour, and heating temperature is 55 DEG C, obtains banana skin extracting solution, spare.100
Rev/min ~ 200 revs/min of mixing speed under, the ferrous sulfate heptahydrate of 10Kg is mixed with the water of 5L, stirring 15 minutes it
Afterwards, the oxidant of 0.4Kg is added, persistently stirs 10 minutes, obtains modifier solution, it is spare.At 100 revs/min ~ 200 revs/min
Under the mixing speed of clock, above-mentioned banana skin extracting solution is mixed with modifier solution, stirs 10 minutes, then heat 20 points
Clock, heating temperature are 40 DEG C, are cooled to room temperature, then under 50 revs/min ~ 100 revs/min of mixing speed, and 0.02Kg is added
Stabilizer, persistently stir 1 minute, stand curing 10 hours at room temperature, modified banana skin liquid coagulant is made.Change above-mentioned
Pulverulent solids product is made in property banana skin liquid coagulant.
Embodiment 6
By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare.At 50 revs/min ~ 100 revs/min
Mixing speed under, by the mass fraction of 23L be 10% sodium hydroxide solution be added in the powdered form banana skin of above-mentioned 8Kg,
Stirring 3 minutes, obtains soak, then heats 0.3 hour, and heating temperature is 60 DEG C, obtains banana skin extracting solution, spare.
Under 100 revs/min ~ 200 revs/min of mixing speed, the ferrous sulfate heptahydrate of 3Kg is mixed with the water of 2L, is stirred 10 minutes
Later, the oxidant of 0.2Kg is added, persistently stirs 10 minutes, obtains modifier solution, it is spare.100 revs/min ~ 200 turns/
Under the mixing speed of minute, above-mentioned banana skin extracting solution is mixed with modifier solution, stirs 5 minutes, then heat 30 points
Clock, heating temperature are 50 DEG C, are cooled to room temperature, then under 50 revs/min ~ 100 revs/min of mixing speed, and 0.007Kg is added
Stabilizer, persistently stir 3 minutes, stand curing 48 hours at room temperature, modified banana skin liquid coagulant is made.Change above-mentioned
Pulverulent solids product is made in property banana skin liquid coagulant.
Application example
No.1,2,3 prepared by above example 1,2,3 are modified banana skin coagulant product and polymeric ferric aluminum（PAF）
And aluminium polychloride（PAC）For the coagulating treatment for the simulated water sample that kaolin and humic acid are prepared, dispensing measures 1.5 mL.It is former
Water turbidity is 74 ~ 95 NTU, and pH value is 8.22 ~ 8.45, UV254For 0.123 ~ 0.143 cm-1, water temperature is 16 DEG C.Handling result is shown in
Fig. 1, Fig. 2, Fig. 3 of Figure of description.
Fig. 1 shows the turbidity removal rate comparisons of modified banana skin coagulant and PAF, PAC.Fig. 2 indicates that modified banana skin is mixed
Solidifying agent and the chroma removal rate of PAF, PAC compare.Fig. 3 indicates the UV of modified banana skin coagulant and PAF, PAC254Removal rate pair
Than.From the above handling result as it can be seen that and polymeric ferric aluminum（PAF）Compare, modified banana skin coagulant have more excellent turbidity removal and
Except color performance, with aluminium polychloride（PAC）It compares, modified banana skin coagulant has more excellent dissolved organic matter removal
Energy.
Claims (3)
1. a kind of preparation process of modified banana skin coagulant, which is characterized in that include the following steps, following each component presses weight
Measure percentage meter：
（1）By banana skin dries pulverizing, 4 mesh sieve is crossed, powdered form banana skin is obtained, it is spare；
（2）Under 50 revs/min ~ 100 revs/min of mixing speed, the hydroxide for being 2% ~ 10% by 55% ~ 85% mass fraction
Sodium solution is added in 2.5% ~ 25% powdered form banana skin, is stirred 3 minutes ~ 7 minutes, is obtained soak, and it is small then to heat 0.3
When ~ 3 hours, heating temperature is 55 DEG C ~ 65 DEG C, obtains banana skin extracting solution, spare；
（3）Under 100 revs/min ~ 200 revs/min of mixing speed, by 5% ~ 13% ferrous sulfate heptahydrate and 1% ~ 10% water
Mixing after stirring 5 minutes ~ 15 minutes, is added 0.2% ~ 0.6% oxidant, persistently stirs 3 minutes ~ 10 minutes, be modified
Agent solution, it is spare；
（4）Under 100 revs/min ~ 200 revs/min of mixing speed, above-mentioned banana skin extracting solution is mixed with modifier solution
It closes, stirs 5 minutes ~ 10 minutes, then heat 10 minutes ~ 30 minutes, heating temperature is 30 DEG C ~ 50 DEG C, is cooled to room temperature, then
Under 50 revs/min ~ 100 revs/min of mixing speed, 0% ~ 0.025% stabilizer is added, persistently stirs 1 minute ~ 3 minutes, room
Temperature is lower to stand curing 2 hours ~ 48 hours, and modified banana skin liquid coagulant is made；
（5）Pulverulent solids product is made in above-mentioned modified banana skin liquid coagulant.
2. the preparation process of modified banana skin coagulant according to claim 1, which is characterized in that the oxidant is
The dioxygen that the liquor natrii hypochloritis or mass fraction that the sodium chlorate solid or mass fraction of technical grade are 10% ~ 13% are 25% ~ 35%
Water.
3. the preparation process of modified banana skin coagulant according to claim 1, which is characterized in that the stabilizer by
The mass fraction for the liquor natrii hypochloritis and active principle that the sodium tartrate of technical grade is 10% ~ 13% with mass fraction is 14% ~
The weight ratio of 15% Kathon CG solution composition, sodium tartrate and liquor natrii hypochloritis and Kathon CG solution is 1：2：0.5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128869A (en) * | 2018-01-19 | 2018-06-08 | 济南大学 | The preparation method of one specific admixture fruit peel-microorganism integral type coagulant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219715A (en) * | 2016-09-20 | 2016-12-14 | 济南大学 | A kind of preparation method of oxidation modification Pericarpium Musae coagulant |
| CN114656106B (en) * | 2022-03-22 | 2023-08-01 | 义乌市排水有限公司 | Rainwater pipeline bypass enhanced water purification treatment system |
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| CN102276037A (en) * | 2011-08-12 | 2011-12-14 | 南开大学 | Method for preparing environment-friendly and efficient composite flocculant |
| EP2502656A1 (en) * | 2009-11-18 | 2012-09-26 | Tokyo University of Marine Science and Technology | Flocculating agent starting material using brown algae as starting material, flocculating agent using said starting material, preparation method for said flocculating agent, and purification method using said flocculating agent |
| CN102992461A (en) * | 2012-11-25 | 2013-03-27 | 溧阳市天目湖保健品有限公司 | Method for producing coagulant aid through utilizing winter bamboo shoot skins |
| CN105084501A (en) * | 2015-09-08 | 2015-11-25 | 天津科技大学 | Biological coagulant aid prepared from plant holly and preparation method thereof |
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Patent Citations (4)
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| EP2502656A1 (en) * | 2009-11-18 | 2012-09-26 | Tokyo University of Marine Science and Technology | Flocculating agent starting material using brown algae as starting material, flocculating agent using said starting material, preparation method for said flocculating agent, and purification method using said flocculating agent |
| CN102276037A (en) * | 2011-08-12 | 2011-12-14 | 南开大学 | Method for preparing environment-friendly and efficient composite flocculant |
| CN102992461A (en) * | 2012-11-25 | 2013-03-27 | 溧阳市天目湖保健品有限公司 | Method for producing coagulant aid through utilizing winter bamboo shoot skins |
| CN105084501A (en) * | 2015-09-08 | 2015-11-25 | 天津科技大学 | Biological coagulant aid prepared from plant holly and preparation method thereof |
Cited By (1)
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| CN108128869A (en) * | 2018-01-19 | 2018-06-08 | 济南大学 | The preparation method of one specific admixture fruit peel-microorganism integral type coagulant |
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