CN105692845B - A kind of preparation method of the natural coagulant of pomelo peel - Google Patents
A kind of preparation method of the natural coagulant of pomelo peel Download PDFInfo
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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Abstract
The invention belongs to water treatment field, is related to a kind of preparation method of the natural coagulant of pomelo peel, includes the following steps：（1）A certain amount of water is added in the pomelo peel powder after crushing, leaching；（2）A small amount of sodium hydroxide solution is added, heating alkali gathers；（3）A certain amount of ethanol, sodium hypochlorite and stabilizer are optionally added, to obtain the coagulant product with different-effect and stability.The technology of the present invention can prepare a kind of pomelo peel utilization rate is higher, manufacturing cost is relatively low, water outlet pH value in the range of neutral or alkalescent, stability preferably, water treatment efficiency it is more excellent, especially to colourity, the higher natural coagulant using pomelo peel as raw material of removal efficiency of heavy metals.The natural coagulant of pomelo peel in the present invention can be widely applied to the fields such as drinking water, municipal sewage, industrial wastewater.
Description
Technical field
The present invention relates to water treatment field, especially, is related to a kind of preparation method of the natural coagulant of pomelo peel.
Background technology
Coagulant is the widely applied water treatment agent in water and wastewater treatment field, realizes that it is gone in water removal by coagulation process
The function of pollutant.In drinking water treatment, the related physics and chemistry such as raw water turbidity, colourity can be achieved by coagulation process for coagulant
The reduction of index, can also realize the removal of multiple harmful substances and microorganism in water.The quality of coagulation effect is to follow-up water process
Operating condition, final outflow water water quality and the water process expense of unit have considerable influence.Therefore efficient, nontoxic, low price coagulant
Research and development be always coagulation process core technology.Coagulant includes inorganic, organic and microbiology class.Inorganic coagulant
Price is relatively low, and stability is preferable, and tool has great advantage, but has a degree of injury to biology and environment.Microbiology class
Coagulant is substantially nontoxic, but it prepares, stores, using etc. and being respectively provided with unstable characteristic, thus is substantially at research and spy
The stage of rope.Organic coagulant includes artificial synthesized organic and natural organic, and artificial synthesized organic is efficient, dosage
It is few, but residue will also result in biology and environment larger harm, and natural organic aboundresources, cheap, degradable, nothing
Poison, has good environmental acceptance, and for the smaller or nontoxic raw water of toxicity, the sludge that water process produces afterwards is complete
Can be with farmland reuse, therefore the concern of countries in the world water treatment field expert has been obtained in recent years.
At the beginning of 21 century, China's food service industry is grown rapidly, and generates the discarded object of flood tide, and melon skin class discarded object belongs to agriculture
One kind of woods discarded object, it recycles or recycles the hot issue for having become common concern.Shaddock is also known as pomelo, is Rutaceae mandarin orange
Tangerine category fruit, is one of the characteristic fruit in China, has large area plantation in many areas, is distributed mainly on Fujian, Jiangxi, lake
The southern areas such as south, Guangdong, Guangxi, Zhejiang, Sichuan.2014/15 annual shaddock total output is about more than 650 ten thousand tons.Pomelo peel is
The outside rind of shaddock, accounts for the 43%~48% of whole shaddock, is largely abandoned, can be in high temperature if cannot get timely processing
Lower fermentation is rotted, and is not only influenced appearance of city and is also nourished mosquito, influences health, become important environmental pressure.
White flock layer is mainly made of cellulose in pomelo peel, has hydroxyl to be formed with water in cellulose molecular structure
Hydrogen bond, the amorphous domain of intramolecule structure is bigger, and hygroscopicity is stronger, so pomelo peel is often used for making adsorbent.At present
On pomelo peel in terms of the application of field of environment protection relates generally to its absorption property, there are some both at home and abroad on pomelo peel adsorptivity
The patent utilized, such as, a kind of preparation method of pomelo peel matrix activated carbon and the application in phenol wastewater, exhaust gas
（CN201510922549.0）, pomelo peel heavy metal absorbent and its preparation method and application（CN201510755331.0）, one
Kind cross-linked chitosan is modified the preparation method that pomelo peel removes low-concentration heavy metal sorbing material in waste water
（CN201510739935.6）, a kind of thiocarbamate class modification shaddock peel adsorbent and preparation method thereof
（CN201510129596.X）, a kind of preparation method of oxalic acid modification pomelo peel biological adsorption agent（CN201410601867.2）,
Modified shaddock peel adsorbent and preparation method thereof（CN201410430743.2）, prepared by a kind of pomelo peel, waste of flax, walnut shell lives
The method of property charcoal（CN201310495709.9）.CN201510922549.0 provides one kind using pomelo peel, activator as raw material
Pomelo peel matrix activated carbon preparation method；CN201510755331.0 provide it is a kind of with pomelo peel, sodium hydroxide, ethanol,
Hydrogen peroxide is pomelo peel heavy metal absorbent of raw material and its preparation method and application；CN201510129596.X provides one kind
Thiocarbamate class using pomelo peel powder, aminated compounds, carbon disulfide and organic solvent as raw material is modified pomelo peel
Adsorbent and preparation method thereof, the adsorbent can be used for removing the heavy metal ion in waste water and dregs, including Cu2+, Pb2+, Cr3+,
Cd2+, Cr6+Deng；CN201410601867.2 provides a kind of oxalic acid using pomelo peel, isopropanol, NaOH, oxalic acid as raw material and changes
Property pomelo peel biological adsorption agent preparation method, to heavy metal cadmium carried out absorption research, it was found that the new purposes of pomelo peel；
CN201410430743.2 provides a kind of using pomelo peel, triethylene tetramine as the modification shaddock peel adsorbent of raw material and its preparation
Method, has excellent absorption property to metal ion in water body；CN201310495709.9 provide it is a kind of using pomelo peel,
The method that waste of flax, walnut shell prepare activated carbon.
In pomelo peel in addition to containing a large amount of celluloses, also containing polysaccharide, pectic substance, thus there is preparation water process
The component base of coagulant, and the above-mentioned system for being not directed to the natural coagulant of pomelo peel in the application of field of environment protection on pomelo peel
Standby technology, at present in domestic and foreign literature database, also has no using pomelo peel as prepared by primary raw material and is polluted for cutting down in water
The relevant report of the natural coagulant of pomelo peel of thing.
The content of the invention
Present invention is primarily intended to open up a kind of new thinking for comprehensive utilization pomelo peel, technical problems to be solved are to carry
For a kind of preparation method of the natural coagulant of pomelo peel, prepared by using the pomelo peel containing materials such as sugar, cellulose, pectin
Water process efficiency is more excellent, accommodation is natural compared with pomelo peel that is wide, being particularly suitable for removing the pollutants such as colourity, phosphorus and heavy metal
Coagulant.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
Following each component is by weight percentage：
（1）Pomelo peel is dried, and is ground into powdered；
（2）Under 50 revs/min ~ 100 revs/min of mixing speed, 40 DEG C ~ 90 DEG C of 57% ~ 89% water is added to
In 7% ~ 28% pomelo peel powder, stir 1 minute ~ 5 minutes, then when continuous heating 0.1 is small at a temperature of 40 DEG C ~ 90 DEG C ~ 2
Hour, extraction mixed liquor is obtained, it is spare；
（3）Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 40 DEG C ~ 90 DEG C, by 0.15%
The sodium hydroxide solution that ~ 5.5% mass fraction is 40% ~ 50% is added in said extracted mixed liquor, stirs 5 minutes ~ 10 points
Clock, obtains the poly- liquid of alkali, spare；
（4）Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 40 DEG C ~ 90 DEG C, by content
The ethanol solution that mass fraction more than 0% and less than or equal to 7.5% is 40% ~ 99.5% is added in the poly- liquid of above-mentioned alkali, stirs 1 point
Clock ~ 5 minute, then when continuous heating 0.1 is small at a temperature of 40 DEG C ~ 90 DEG C ~ 0.5 it is small when, obtain the poly- liquid of alkali alcohol, it is spare；
（5）The liquor natrii hypochloritis that content is more than 0% and the mass fraction less than or equal to 2.5% is 10% ~ 13% is added to
In the above-mentioned poly- liquid of alkali alcohol, stir 1 minute ~ 5 minutes, the poly- distiller liquor of alkali alcohol is obtained, then at 50 revs/min ~ 100 revs/min
Under conditions of mixing speed and temperature are 40 DEG C ~ 90 DEG C, by content be more than 0% and the mass fraction less than or equal to 2.5% for 5% ~
20% sodium chloride solution is added in the above-mentioned poly- distiller liquor of alkali alcohol, is stirred 1 minute ~ 5 minutes, is obtained the poly- distiller liquor of alkali alkoxide, then
Content is more than 0% and the stabilizer less than or equal to 0.017% is added in the poly- distiller liquor of above-mentioned alkali alkoxide, stirs 1 minute ~ 5 points
Clock, stands curing at room temperature, control the curing time for 0.5 it is small when ~ 6 it is small when, the obtained natural coagulant fluid product of pomelo peel；
（6）Using reverse contact spray drying process or naturally dry method or freezing by aforesaid liquid product solid state,
In reverse contact spray drying process, hot air flowrate 100m3/h~250m3/ h, hot-air inlets temperature are 105 DEG C ~ 115 DEG C,
In naturally dry method, by the natural coagulant fluid product naturally dry of above-mentioned pomelo peel, crush, in freezing, freezing temperature
Degree control is -20 DEG C ~ -10 DEG C, and the powdered solid product of the natural coagulant of pomelo peel is made；
Sodium hydroxide, sodium hypochlorite and sodium chloride used is technical grade product；
The Kathon CG solution that stabilizer used is the sodium tartrate of technical grade and the mass fraction of active principle is 14% ~ 15%
Mixed liquor, the weight ratio of sodium tartrate and sodium tartrate is 1:1.
The invention has the advantages that：
1st, it is primary raw material present invention employs the melon and fruit peel in agriculture and forestry organic waste material, using water as main extractant, is added with low
Raw material is helped supplemented by the industrial sodium hydroxide for entering amount, reduces the manufacturing cost of coagulant, the technical grade hydroxide of low addition
Sodium makes the pH value of the water after processing in the range of neutral or alkalescent, it is not necessary to which additional acid is dropped with reducing the pH value of water outlet
The low cost of water process.
2nd, production process of the invention be normal pressure, and temperature of reaction kettle requirement is 40 DEG C ~ 90 DEG C, and energy consumption is low, production process without
Secondary pollution, production equipment and technical process are simple, economic, practical, realize very well.
3rd, the Kathon CG added in the present invention has coagulant antisepsis, while the sodium hypochlorite added also has extension
The function of coagulant storage time, preferably improves the storage stability of coagulant, while the hypochlorous acid added in the present invention
Sodium also has the function that to improve coagulant depollution effect.
4th, the natural coagulant of pomelo peel of the invention can be applied to the fields such as drinking water, municipal sewage, industrial wastewater.
Embodiment
The present invention is described in further detail with reference to embodiment.
Embodiment 1
Pomelo peel is dried, and is ground into powdered.Under 50 revs/min ~ 100 revs/min of mixing speed, by 50 DEG C
The water of 60L be added in the pomelo peel powder of 10Kg, stir 2 minutes, then continuous heating 0.5 is small at a temperature of 50 DEG C
When, extraction mixed liquor is obtained, it is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 50 DEG C,
The sodium hydroxide solution that the mass fraction of 0.1L is 40% is added in said extracted mixed liquor, is stirred 5 minutes, is obtained alkali and gather
Liquid, then when continuous heating 0.1 is small at a temperature of 50 DEG C, stands curing at room temperature, control the curing time for 3 it is small when, it is obtained
The natural coagulant fluid product of pomelo peel.
Embodiment 2
Pomelo peel is dried, and is ground into powdered.Under 50 revs/min ~ 100 revs/min of mixing speed, by 60 DEG C
The water of 40L be added in the pomelo peel powder of 10Kg, stir 5 minutes, then continuous heating 1.5 is small at a temperature of 60 DEG C
When, extraction mixed liquor is obtained, it is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 60 DEG C,
The sodium hydroxide solution that the mass fraction of 0.5L is 40% is added in said extracted mixed liquor, is stirred 5 minutes, is obtained alkali and gather
Liquid, it is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 60 DEG C, by the quality of 0.5L point
Number is added in the poly- liquid of above-mentioned alkali for 40% ethanol solution, is stirred 5 minutes, then continuous heating 0.1 is small at a temperature of 60 DEG C
When, obtain the poly- liquid of alkali alcohol, stand curing at room temperature, control the curing time for 6 it is small when, the natural coagulant liquid of pomelo peel is made and produces
Product.
Embodiment 3
Pomelo peel is dried, and is ground into powdered.Under 50 revs/min ~ 100 revs/min of mixing speed, by 80 DEG C
The water of 30L be added in the pomelo peel powder of 10Kg, stir 5 minutes, then when continuous heating 2 is small at a temperature of 80 DEG C,
Extraction mixed liquor is obtained, it is spare., will under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 80 DEG C
The sodium hydroxide solution that the mass fraction of 1L is 50% is added in said extracted mixed liquor, is stirred 10 minutes, is obtained the poly- liquid of alkali,
It is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 80 DEG C, it is by the mass fraction of 1.5L
99.5% ethanol solution is added in the poly- liquid of above-mentioned alkali, is stirred 5 minutes, then continuous heating 0.5 is small at a temperature of 80 DEG C
When, the poly- liquid of alkali alcohol is obtained, it is spare.The liquor natrii hypochloritis that the mass fraction of 0.1L is 13% is added in the above-mentioned poly- liquid of alkali alcohol,
Stirring 3 minutes, obtains the poly- distiller liquor of alkali alcohol, is then 80 DEG C in 50 revs/min ~ 100 revs/min of mixing speed and temperature
Under the conditions of, the sodium chloride solution that the mass fraction of 0.05L is 5% is added in the above-mentioned poly- distiller liquor of alkali alcohol, stirs 3 minutes, obtains
It is added to the poly- distiller liquor of alkali alkoxide, then by the stabilizer of 0.01L in the poly- distiller liquor of above-mentioned alkali alkoxide, stirring 1 minute, at room temperature
Stand curing, control the curing time for 1 it is small when, the obtained natural coagulant fluid product of pomelo peel.
Embodiment 4
Pomelo peel is dried, and is ground into powdered.Under 50 revs/min ~ 100 revs/min of mixing speed, by 50 DEG C
The water of 60L be added in the pomelo peel powder of 10Kg, stir 2 minutes, then continuous heating 0.5 is small at a temperature of 50 DEG C
When, extraction mixed liquor is obtained, it is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 50 DEG C,
The sodium hydroxide solution that the mass fraction of 0.1L is 40% is added in said extracted mixed liquor, is stirred 5 minutes, is obtained alkali and gather
Liquid, then when continuous heating 0.1 is small at a temperature of 50 DEG C, stands curing at room temperature, control the curing time for 3 it is small when, it is obtained
The natural coagulant fluid product of pomelo peel.Using the reverse spray drying process that contacts by aforesaid liquid product solid state, stream of hot air
Measure as 150m3/ h, hot-air inlets temperature are 105 DEG C ~ 115 DEG C, and the powdered solid product of the natural coagulant of pomelo peel is made.
Embodiment 5
Pomelo peel is dried, and is ground into powdered.Under 50 revs/min ~ 100 revs/min of mixing speed, by 60 DEG C
The water of 40L be added in the pomelo peel powder of 10Kg, stir 5 minutes, then continuous heating 1.5 is small at a temperature of 60 DEG C
When, extraction mixed liquor is obtained, it is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 60 DEG C,
The sodium hydroxide solution that the mass fraction of 0.5L is 40% is added in said extracted mixed liquor, is stirred 5 minutes, is obtained alkali and gather
Liquid, it is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 60 DEG C, by the quality of 0.5L point
Number is added in the poly- liquid of above-mentioned alkali for 40% ethanol solution, is stirred 5 minutes, then continuous heating 0.1 is small at a temperature of 60 DEG C
When, obtain the poly- liquid of alkali alcohol, stand curing at room temperature, control the curing time for 6 it is small when, the natural coagulant liquid of pomelo peel is made and produces
Product.Using naturally dry method by aforesaid liquid product solid state, by the natural coagulant fluid product naturally dry of above-mentioned pomelo peel,
Crush, the powdered solid product of the natural coagulant of pomelo peel is made.
Embodiment 6
Pomelo peel is dried, and is ground into powdered.Under 50 revs/min ~ 100 revs/min of mixing speed, by 80 DEG C
The water of 30L be added in the pomelo peel powder of 10Kg, stir 5 minutes, then when continuous heating 2 is small at a temperature of 80 DEG C,
Extraction mixed liquor is obtained, it is spare., will under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 80 DEG C
The sodium hydroxide solution that the mass fraction of 1L is 50% is added in said extracted mixed liquor, is stirred 10 minutes, is obtained the poly- liquid of alkali,
It is spare.Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 80 DEG C, it is by the mass fraction of 1.5L
99.5% ethanol solution is added in the poly- liquid of above-mentioned alkali, is stirred 5 minutes, then continuous heating 0.5 is small at a temperature of 80 DEG C
When, the poly- liquid of alkali alcohol is obtained, it is spare.The liquor natrii hypochloritis that the mass fraction of 0.1L is 13% is added in the above-mentioned poly- liquid of alkali alcohol,
Stirring 3 minutes, obtains the poly- distiller liquor of alkali alcohol, is then 80 DEG C in 50 revs/min ~ 100 revs/min of mixing speed and temperature
Under the conditions of, the sodium chloride solution that the mass fraction of 0.05L is 5% is added in the above-mentioned poly- distiller liquor of alkali alcohol, stirs 3 minutes, obtains
It is added to the poly- distiller liquor of alkali alkoxide, then by the stabilizer of 0.01L in the poly- distiller liquor of above-mentioned alkali alkoxide, stirring 1 minute, at room temperature
Stand curing, control the curing time for 1 it is small when, the obtained natural coagulant fluid product of pomelo peel.Using freezing by above-mentioned liquid
Body product solid state, cryogenic temperature control is -20 DEG C, and the powdered solid product of the natural coagulant of pomelo peel is made.
Application example 1
The natural coagulant product of the pomelo peel of No.1,2,3 and polymeric ferric aluminum prepared by above example 1,2,3（PAF）
The decolorization for the simulated water sample prepared for dyestuff and kaolin.Raw water turbidity is 27 ~ 46 NTU, colourity for 1.578 ~
1.789 CU, water temperature are 16 ~ 18 DEG C.Handling result is listed in table 1.
The contrast of the natural coagulant of 1 pomelo peel of table and PAF decolorizing effects, dosage 1mL
| Coagulant | No.1 | No.2 | No.3 | PAF |
| Decolorizing efficiency（%） | 91 | 93 | 95 | 78 |
From above handling result as it can be seen that and polymeric ferric aluminum（PAF）Compare, the natural coagulant of pomelo peel has more excellent take off
Color performance.
Application example 2
The natural coagulant product of the pomelo peel of No.1,2,3 and polymeric ferric aluminum prepared by above example 1,2,3（PAF）
The coagulating treatment for the simulated water sample prepared for kaolin and heavy metal.Raw water turbidity is 18 ~ 35 NTU, pH value for 7.24 ~
8.11 Pb2+For 0.5 mg/L, Cd2+For 0.5 mg/L, water temperature is 16 ~ 18 DEG C.Handling result is listed in table 2.
The natural coagulant of 2 pomelo peel of table removes the contrast of Pb2+ and Cd2 with PAF coagulations, and dosage is 1.5 mL
| Coagulant | No.1 | No.2 | No.3 | PAF |
| Remove Pb2+Efficiency（%） | 79 | 82 | 78 | 62 |
| Remove Cd2+Efficiency（%） | 88 | 92 | 85 | 58 |
From above handling result as it can be seen that and polymeric ferric aluminum（PAF）Compare, the natural coagulant of pomelo peel is to Pb2+And Cd2+Tool
There is more excellent removal capacity, wherein to Cd2+Removal capacity be better than Pb2+。
Claims (2)
- A kind of 1. preparation method of the natural coagulant of pomelo peel, it is characterised in that the step of more particularly to following orders, Suo Youbai Fraction is weight percentage：（1）Pomelo peel is dried, and is ground into powdered；（2）Under 50 revs/min ~ 100 revs/min of mixing speed, 40 DEG C ~ 90 DEG C of 57% ~ 89% water is added to 7% ~ In 28% pomelo peel powder, stir 1 minute ~ 5 minutes, then when continuous heating 0.1 is small at a temperature of 40 DEG C ~ 90 DEG C ~ it is 2 small When, extraction mixed liquor is obtained, it is spare；（3）Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 40 DEG C ~ 90 DEG C, by 0.15% ~ The sodium hydroxide solution that 5.5% mass fraction is 40% ~ 50% is added in said extracted mixed liquor, is stirred 5 minutes ~ 10 minutes, The poly- liquid of alkali is obtained, it is spare；（4）Under conditions of 200 revs/min ~ 400 revs/min of mixing speeds and temperature are 40 DEG C ~ 90 DEG C, content is more than 0% and less than or equal to 7.5% mass fraction be 40% ~ 99.5% ethanol solution be added in the poly- liquid of above-mentioned alkali, stirring 1 minute ~ 5 Minute, then when continuous heating 0.1 is small at a temperature of 40 DEG C ~ 90 DEG C ~ 0.5 it is small when, obtain the poly- liquid of alkali alcohol, it is spare；（5）The liquor natrii hypochloritis that content is more than 0% and the mass fraction less than or equal to 2.5% is 10% ~ 13% is added to above-mentioned In the poly- liquid of alkali alcohol, stir 1 minute ~ 5 minutes, the poly- distiller liquor of alkali alcohol is obtained, then in 50 revs/min ~ 100 revs/min of stirring It is 5% ~ 20% by mass fraction of the content more than 0% and less than or equal to 2.5% under conditions of speed and temperature are 40 DEG C ~ 90 DEG C Sodium chloride solution is added in the above-mentioned poly- distiller liquor of alkali alcohol, is stirred 1 minute ~ 5 minutes, is obtained the poly- distiller liquor of alkali alkoxide, then will contain Stabilizer of the amount more than 0% and less than or equal to 0.017% is added in the poly- distiller liquor of above-mentioned alkali alkoxide, is stirred 1 minute ~ 5 minutes, room Temperature is lower to stand curing, control the curing time for 0.5 it is small when ~ 6 it is small when, the natural coagulant fluid product of obtained pomelo peel；（6）Using reverse contact spray drying process or naturally dry method or freezing by aforesaid liquid product solid state, reverse Contact in spray drying process, hot air flowrate 100m3/h~250m3/ h, hot-air inlets temperature is 105 DEG C ~ 115 DEG C, certainly So dry in method, by the natural coagulant fluid product naturally dry of above-mentioned pomelo peel, crush, in freezing, cryogenic temperature control - 20 DEG C ~ -10 DEG C are made as, the powdered solid product of the natural coagulant of pomelo peel is made.
- 2. the preparation method of the natural coagulant of pomelo peel according to claim 1, it is characterised in that stabilizer used is The sodium tartrate of technical grade and the mass fraction of active principle are the mixed liquor of 14% ~ 15% Kathon CG solution, sodium tartrate and wine The weight ratio of stone acid sodium is 1:1.
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| CN107349914A (en) * | 2017-09-03 | 2017-11-17 | 郑州坤博科技有限公司 | A kind of high-performance adsorbent for Industrial Wastewater Treatment |
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| CN102391442B (en) * | 2011-09-06 | 2012-12-05 | 同济大学 | Preparation method of modified elm bark flocculant |
| CN102643394A (en) * | 2012-04-20 | 2012-08-22 | 上海将峰环保科技有限公司 | Preparation method of modified camphor bark flocculant |
| CN102992461B (en) * | 2012-11-25 | 2014-01-29 | 溧阳市天目湖保健品有限公司 | Method for producing coagulant aid through utilizing winter bamboo shoot skins |
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2016
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