CN106830256A - A kind of technology of preparing of the stability watermelon peel coagulant for water process - Google Patents
A kind of technology of preparing of the stability watermelon peel coagulant for water process Download PDFInfo
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- CN106830256A CN106830256A CN201710122381.4A CN201710122381A CN106830256A CN 106830256 A CN106830256 A CN 106830256A CN 201710122381 A CN201710122381 A CN 201710122381A CN 106830256 A CN106830256 A CN 106830256A
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
Abstract
The invention belongs to water-treatment technology field, it is related to a kind of technology of preparing of the stability watermelon peel coagulant for water process.The technical scheme is as follows：Add water in powdery watermelon peel, leaching, centrifugation obtains separating liquid I and separates slag；Then water and NaOH are added in separation slag, leaching, centrifugation obtains separating liquid II；Separating liquid I and separating liquid II are mixed, oxidant and etherifying agent is added, stability watermelon peel coagulant is obtained.The method of the present invention can prepare the stability watermelon peel coagulant that a kind of stability is higher, organics removal effect improves a lot.The present invention is using the scale extraction of normal temperature " under normal pressure be slightly less than ", and energy consumption is low, production equipment and process is simple, and coagulant of the invention can be applied to feedwater, municipal sewage and industrial wastewater field, and the sludge of generation can farmland reuse.
Description
Technical field
The invention belongs to water-treatment technology field, it is related to a kind of stabilization for water process for wanting raw material based on watermelon peel
The technology of preparing of property watermelon peel coagulant.
Background technology
Coagulation is by a certain amount of coagulant is added in water, to destroy what is existed with colloid and difficult hypostasis form in water
The stability of pollutant, promotes small suspension and colloidal solid to be condensed into and is settled compared with big flocculating body, reaches the mesh being separated from water
, make the process that water is purified.Because the process is simple, it is easy to accomplish, and with versatility, therefore as a kind of important
Materilization freatment method, application of the coagulation in the treatment of feedwater, industrial wastewater and sanitary wastewater is quite varied, to every contamination index
Clearance it is very high.And in coagulating treatment, focal spot techniques are the high efficiency of coagulant.Coagulant is various in style, totally may be used
It is divided into inorganic, organic, microorganism and the major class of compound coagulant four.The research of coagulant in recent years always with a low price, it is efficient, nontoxic
It is main direction, wherein natural organic high-molecular rich material resources, cheap, degradable, nontoxic are a kind of environmentally friendly things
Matter, and for the smaller or nontoxic raw water of toxicity, the sludge produced after water process completely can be with farmland reuse, therefore in recent years
To have obtained the extensive concern of countries in the world water treatment field expert.On the other hand, as solid refuse pollution turns into worldwide
After problem, the study hotspot that various coagulant are always water treatment agent field is researched and developed using solid waste.
In recent years, it is discarded on agricultural such as husk, rice straw, straw, cornstalk, peanut shell, bagasse, fruit peels in the world
Thing increasingly expands in the range of application of water treatment field.With increasing substantially for our people's living standard, food service industry is obtained
Fast development is arrived, while also generating substantial amounts of discarded object.Melon skin class discarded object belongs to one kind of agriculture and forestry organic waste material, watermelon peel
Belong to melon skin class discarded object, account for the 33% of watermelon gross weight, the value that watermelon peel processing is recycled is relatively low, abandons phenomenon serious.
China abounds with watermelon, is world production and the first big country of consumption, and its yield accounts for the 70% of the world, and there are a large amount of plantations in many provinces,
And export smaller, thus substantial amounts of watermelon peel discarded object is generated, if cannot process in time, can ferment corruption at high temperature
It is rotten, not only influence appearance of city also to nourish mosquito, health is influenceed, as important environmental pressure, therefore watermelon peel is returned
Receive or recycle the hot issue as common concern.
At present, on watermelon peel in terms of the application of water treatment field relates generally to its absorption property, than described as follows one
A little patents, a kind of method that utilization watermelon peel drip washing removes Cadium In Polluted Soil（CN201310712311.6）, a kind of watermelon peel
Heavy metal absorbent and preparation method thereof（CN201510522724.7）.Wherein CN201310712311.6 is provided to the west of one kind
Melon skin is primary raw material, is with rice husk, sepiolite powder, attapulgite, calcium chloride, tannic acid, polyethylene glycol, carboxymethyl with KCl
Sodium cellulosate, NPE, cosolvent, are obtained watermelon peel leacheate, drip washing farmland cadmium pollution soil；
CN201510522724.7 is disclosed one kind and raw material is wanted based on watermelon peel, and agent 4-6, water are that heavy metal obtained in principal ingredients is inhaled
Attached dose.Additionally, the patent in terms of being used for water treatment coagulant using watermelon peel development has, and " one kind realizes that water pollutant goes
The preparation method of the watermelon peel coagulant for removing（201610286175.2）", the patent employs 20 DEG C ~ 70 DEG C of water extraction, system
The watermelon peel coagulation that standby a kind of stability that watermelon peel utilization rate is higher, preparation cost is relatively low is preferable, water treatment efficiency is more excellent
Although agent, the coagulant is water extraction, it also requires heating leaching, in addition, the coagulant needs to add preservative to extend it
Storage stability.
The content of the invention
It is an object of the invention to overcome the weak point in above-mentioned technology, there is provided a kind of stability is preferable, preparation technology
The technology of preparing of the better simply watermelon peel coagulant for water process with watermelon peel and oxidant as primary raw material, i.e., " often
Pressure is slightly less than the scale extraction of normal temperature ".
Technical scheme is comprised the following steps, the following equal percentage of each component：
A. by watermelon peel dries pulverizing, 100 mesh sieves are crossed, obtains powdery watermelon peel, it is stand-by；
B. under 50 revs/min ~ 80 revs/min of stirring condition, the 29% ~ 45% of 10 DEG C ~ 18 DEG C water is added to 36% ~
In 50% powdery watermelon peel, stir 30 minutes ~ 60 minutes, stand 24 hours ~ 36 hours at room temperature, centrifugation is separated
Liquid I and separation slag, it is stand-by；
C. under 150 revs/min ~ 200 revs/min of stirring condition, the 10% ~ 25% of 10 DEG C ~ 18 DEG C water is added to above-mentioned
Separate in slag, stir 5 minutes ~ 10 minutes, stand 20 minutes ~ 40 minutes at room temperature, be subsequently adding 0.3% ~ 1.2% molar fraction
It is the sodium hydroxide solution of 5mol/L, stirs 20 minutes ~ 30 minutes, stand 2 hours ~ 3 hours at room temperature, centrifugation is obtained
Separating liquid II, it is stand-by；
D. under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, separating liquid I and separating liquid II are mixed,
Stirring 5 minutes ~ 8 minutes, it is open under conditions of being then 50 DEG C ~ 60 DEG C in temperature to place 5 hours ~ 10 hours, mixed liquor is obtained,
It is stand-by；
E. under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, 4.7% ~ 5.5% oxidant is added
To in above-mentioned mixed liquor, stir 5 minutes ~ 15 minutes, stand 5 hours ~ 8 hours at room temperature, obtain and stand liquid；
F. under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, 0.8% ~ 1.5% etherifying agent is added
To in above-mentioned standing liquid, stir 5 minutes ~ 15 minutes, stand 10 hours at room temperature, the stability watermelon peel for water process is obtained
Liquid coagulant；
G. using method or freezing is dried naturally by aforesaid liquid product solid state, in method is dried naturally, by aforementioned stable
Watermelon peel liquid coagulant is dried, pulverizes naturally, and in freezing, cryogenic temperature is controlled at -20 DEG C ~ -10 DEG C, is made stability
Watermelon peel solid-state coagulant.
Sodium chlorate solid or liquor natrii hypochloritis of the described oxidant for technical grade, sodium chlorate in sodium chlorate solid
More than 98%, the mass fraction of liquor natrii hypochloritis is 10% ~ 13%.
Described etherifying agent is technical grade polyquaternium -7, and solid content is 20 ± 1%.
The invention has the advantages that：
1st, the stability watermelon peel coagulant for water process of the invention wants raw material based on watermelon peel, is main leaching with water
Agent, is auxiliary leaching agent with NaOH, with the sodium chlorate solid of technical grade or liquor natrii hypochloritis as oxidant, with polyquaternary amine
Salt -7 is etherifying agent, and the preparation method for using is " the scale extraction of normal temperature is slightly less than under normal pressure ", production equipment and technique letter
It is single, it is easy to accomplish；
2nd, the stability of stability watermelon peel coagulant of the invention is not to be realized by the addition of preservative merely, but
Its storage-stable is realized by the comprehensive function of preparation technology and oxidant, etherifying agent, is in addition aoxidized in preparation technology
The addition of agent serves organics removal and improves the double action of storage stability, and the addition of etherifying agent also improves coagulant
Depollution effect.
3rd, stability watermelon peel coagulant of the invention can be applied to feedwater, municipal sewage and industrial wastewater field, produce
Sludge can farmland reuse；
4th, when stability watermelon peel coagulant of the invention carries out water process, water outlet pH value is accorded with the range of neutral or alkalescent
Close feedwater and the acid-base property requirement of discharge water.
Specific embodiment
The present invention is described in further detail with reference to embodiment.
Embodiment 1
By watermelon peel dries pulverizing, 100 mesh sieves are crossed, obtain powdery watermelon peel, it is stand-by.In 50 revs/min ~ 80 revs/min stir
Under the conditions of mixing, the water of 10 DEG C of 100L is added in the powdery watermelon peel of 115Kg, stirred 30 minutes, 24 are stood at room temperature small
When, centrifugation obtains separating liquid I and separates slag, stand-by.Under 150 revs/min ~ 200 revs/min of stirring condition, by 18
DEG C the water of 65L be added in above-mentioned separation slag, stir 5 minutes, stand 40 minutes at room temperature, be subsequently adding the molar fraction of 2L
It is the sodium hydroxide solution of 5mol/L, stirs 20 minutes, stand 2 hours ~ 3 hours at room temperature, centrifugation obtains separating liquid
II, it is stand-by.Under 150 revs/min ~ 200 revs/min of mixing speeds and room temperature condition, separating liquid I and separating liquid II are mixed
Close, stir 5 minutes, it is open under conditions of being then 50 DEG C ~ 60 DEG C in temperature to place 5 hours, mixed liquor is obtained, it is stand-by.150
Rev/min ~ 200 revs/min of mixing speed and room temperature condition under, by the mass fraction of 13L for 10% ~ 13% sodium hypochlorite is molten
Liquid is added in above-mentioned mixed liquor, is stirred 10 minutes, stands 5 hours at room temperature, is obtained and is stood liquid.150 revs/min ~ 200
Rev/min mixing speed and room temperature condition under, the polyquaternium -7 of 3L is added in above-mentioned standing liquid, stir 5 minutes, room
Temperature is lower to stand 10 hours, and the stability watermelon peel liquid coagulant for water process is obtained.
Embodiment 2
By watermelon peel dries pulverizing, 100 mesh sieves are crossed, obtain powdery watermelon peel, it is stand-by.In 50 revs/min ~ 80 revs/min stir
Under the conditions of mixing, the water of 18 DEG C of 100L is added in the powdery watermelon peel of 117Kg, stirred 60 minutes, 36 are stood at room temperature small
When, centrifugation obtains separating liquid I and separates slag, stand-by.Under 150 revs/min ~ 200 revs/min of stirring condition, by 10
DEG C the water of 30L be added in above-mentioned separation slag, stir 10 minutes, stand 30 minutes at room temperature, then plus 0.8L mole point
Number is the sodium hydroxide solution of 5mol/L, is stirred 30 minutes, stands 2 hours ~ 3 hours at room temperature, and centrifugation obtains separating liquid
II, it is stand-by.Under 150 revs/min ~ 200 revs/min of mixing speeds and room temperature condition, separating liquid I and separating liquid II are mixed
Close, stir 8 minutes, it is open under conditions of being then 50 DEG C ~ 60 DEG C in temperature to place 10 hours, mixed liquor is obtained, it is stand-by.
Under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, 13Kg sodium chlorate solids are added to above-mentioned mixed liquor
In, stir 15 minutes, 7 hours are stood at room temperature, obtain and stand liquid.In 150 revs/min ~ 200 revs/min of mixing speeds and
Under room temperature condition, the polyquaternium -7 of 2.5L is added in above-mentioned standing liquid, stirred 15 minutes, stand 10 hours at room temperature,
The stability watermelon peel liquid coagulant for water process is obtained.
Embodiment 3
By watermelon peel dries pulverizing, 100 mesh sieves are crossed, obtain powdery watermelon peel, it is stand-by.In 50 revs/min ~ 80 revs/min stir
Under the conditions of mixing, the water of 10 DEG C of 100L is added in the powdery watermelon peel of 115Kg, stirred 30 minutes, 24 are stood at room temperature small
When, centrifugation obtains separating liquid I and separates slag, stand-by.Under 150 revs/min ~ 200 revs/min of stirring condition, by 18
DEG C the water of 65L be added in above-mentioned separation slag, stir 5 minutes, stand 40 minutes at room temperature, be subsequently adding the molar fraction of 2L
It is the sodium hydroxide solution of 5mol/L, stirs 20 minutes, stand 2 hours ~ 3 hours at room temperature, centrifugation obtains separating liquid
II, it is stand-by.Under 150 revs/min ~ 200 revs/min of mixing speeds and room temperature condition, separating liquid I and separating liquid II are mixed
Close, stir 5 minutes, it is open under conditions of being then 50 DEG C ~ 60 DEG C in temperature to place 5 hours, mixed liquor is obtained, it is stand-by.150
Rev/min ~ 200 revs/min of mixing speed and room temperature condition under, by the mass fraction of 13L for 10% ~ 13% sodium hypochlorite is molten
Liquid is added in above-mentioned mixed liquor, is stirred 10 minutes, stands 5 hours at room temperature, is obtained and is stood liquid.150 revs/min ~ 200
Rev/min mixing speed and room temperature condition under, the polyquaternium -7 of 3L is added in above-mentioned standing liquid, stir 5 minutes, room
Temperature is lower to stand 10 hours, and the stability watermelon peel liquid coagulant for water process is obtained.Using drying method naturally by above-mentioned liquid
Body product solid state, aforementioned stable watermelon peel liquid coagulant is dried naturally, is pulverized, and is made the solid titanium of stability watermelon peel and is mixed
Solidifying agent.
Embodiment 4
By watermelon peel dries pulverizing, 100 mesh sieves are crossed, obtain powdery watermelon peel, it is stand-by.In 50 revs/min ~ 80 revs/min stir
Under the conditions of mixing, the water of 18 DEG C of 100L is added in the powdery watermelon peel of 117Kg, stirred 60 minutes, 36 are stood at room temperature small
When, centrifugation obtains separating liquid I and separates slag, stand-by.Under 150 revs/min ~ 200 revs/min of stirring condition, by 10
DEG C the water of 30L be added in above-mentioned separation slag, stir 10 minutes, stand 30 minutes at room temperature, then plus 0.8L mole point
Number is the sodium hydroxide solution of 5mol/L, is stirred 30 minutes, stands 2 hours ~ 3 hours at room temperature, and centrifugation obtains separating liquid
II, it is stand-by.Under 150 revs/min ~ 200 revs/min of mixing speeds and room temperature condition, separating liquid I and separating liquid II are mixed
Close, stir 8 minutes, it is open under conditions of being then 50 DEG C ~ 60 DEG C in temperature to place 10 hours, mixed liquor is obtained, it is stand-by.
Under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, 13Kg sodium chlorate solids are added to above-mentioned mixed liquor
In, stir 15 minutes, 7 hours are stood at room temperature, obtain and stand liquid.In 150 revs/min ~ 200 revs/min of mixing speeds and
Under room temperature condition, the polyquaternium -7 of 2.5L is added in above-mentioned standing liquid, stirred 15 minutes, stand 10 hours at room temperature,
The stability watermelon peel liquid coagulant for water process is obtained.Using freezing by aforesaid liquid product solid state, freezing is warm
Degree is controlled to -20 DEG C ~ -18 DEG C, is made stability watermelon peel solid-state coagulant.
Application example 1
The No.1 of the preparation of above example 1,2,2 are used for the stability watermelon peel coagulant product and patent of water process
The product of 201610286175.2 embodiments 1 is used for the coagulating treatment of the simulated water sample that kaolin is prepared with humic acid.Raw water is turbid
It is 65 ~ 82NTU to spend, and pH value is 8.32 ~ 8.95, and colourity is 0.213 ~ 0.345 CU, and water temperature is 16 DEG C.Result is listed in table 1.
The coagulant of the invention of table 1 and the contrast of the product coagulation effect of the embodiment 1 of patent 201610286175.2, throw
Dose 0.5mL
It is of the invention compared with the embodiment 1 of patent 201610286175.2, the product of embodiment 2 from above result
Coagulant product improves a lot for organic matter removal effect.
Application example 2
The No.1 of the preparation of above example 1,2,2 are placed at normal temperatures, with the embodiment 1 of patent 201610286175.2, implementation
Example 2, the product of embodiment 3 are compared, and observe storage stability, and the storage stability white small foam shape thing occurs with medicament liquid level
There is peculiar smell for normative reference in matter, wherein white small foam shape material is referred to as into peculiar thing, is as a result listed in table 2.
The coagulant of the invention of table 2 is stored up with the product of the embodiment 1 of patent 201610286175.2, embodiment 2, embodiment 3
Deposit the contrast of stability
From result stored above, compared with the product of the embodiment 1 of patent 201610286175.2 and embodiment 2, the present invention
Coagulant product there is excellent storage stability, compared with the product of the embodiment 3 of patent 201610286175.2, the present invention
The storage stability of coagulant product be also greatly increased.
Claims (3)
1. the technology of preparing of a kind of stability watermelon peel coagulant for water process, it is characterised in that comprise the following steps, with
The lower equal percentage of each component：
A. by watermelon peel dries pulverizing, 100 mesh sieves are crossed, obtains powdery watermelon peel, it is stand-by；
B. under 50 revs/min ~ 80 revs/min of stirring condition, the 29% ~ 45% of 10 DEG C ~ 18 DEG C water is added to 36% ~
In 50% powdery watermelon peel, stir 30 minutes ~ 60 minutes, stand 24 hours ~ 36 hours at room temperature, centrifugation is separated
Liquid I and separation slag, it is stand-by；
C. under 150 revs/min ~ 200 revs/min of stirring condition, the 10% ~ 25% of 10 DEG C ~ 18 DEG C water is added to above-mentioned
Separate in slag, stir 5 minutes ~ 10 minutes, stand 20 minutes ~ 40 minutes at room temperature, be subsequently adding 0.3% ~ 1.2% molar fraction
It is the sodium hydroxide solution of 5mol/L, stirs 20 minutes ~ 30 minutes, stand 2 hours ~ 3 hours at room temperature, centrifugation is obtained
Separating liquid II, it is stand-by；
D. under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, separating liquid I and separating liquid II are mixed,
Stirring 5 minutes ~ 8 minutes, it is open under conditions of being then 50 DEG C ~ 60 DEG C in temperature to place 5 hours ~ 10 hours, mixed liquor is obtained,
It is stand-by；
E. under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, 4.7% ~ 5.5% oxidant is added
To in above-mentioned mixed liquor, stir 5 minutes ~ 15 minutes, stand 5 hours ~ 8 hours at room temperature, obtain and stand liquid；
F. under 150 revs/min ~ 200 revs/min of mixing speed and room temperature condition, 0.8% ~ 1.5% etherifying agent is added
To in above-mentioned standing liquid, stir 5 minutes ~ 15 minutes, stand 10 hours at room temperature, the stability watermelon peel for water process is obtained
Liquid coagulant；
G. using method or freezing is dried naturally by aforesaid liquid product solid state, in method is dried naturally, by aforementioned stable
Watermelon peel liquid coagulant is dried, pulverizes naturally, and in freezing, cryogenic temperature is controlled at -20 DEG C ~ -10 DEG C, is made stability
Watermelon peel solid-state coagulant.
2. the technology of preparing of the stability watermelon peel coagulant for water process according to claim 1, it is characterised in that
Described etherifying agent is technical grade polyquaternium -7, and solid content is 20 ± 1%.
3. the technology of preparing of the stability watermelon peel coagulant for water process according to claim 1, it is characterised in that
Using the scale extraction of normal temperature " under normal pressure be slightly less than ", energy consumption is low, production equipment and process is simple.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122381.4A CN106830256A (en) | 2017-03-03 | 2017-03-03 | A kind of technology of preparing of the stability watermelon peel coagulant for water process |
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| CN201710122381.4A CN106830256A (en) | 2017-03-03 | 2017-03-03 | A kind of technology of preparing of the stability watermelon peel coagulant for water process |
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| CN106830256A true CN106830256A (en) | 2017-06-13 |
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| CN201710122381.4A Withdrawn CN106830256A (en) | 2017-03-03 | 2017-03-03 | A kind of technology of preparing of the stability watermelon peel coagulant for water process |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753124A (en) * | 2016-05-04 | 2016-07-13 | 济南大学 | Method for preparing watermelon peel coagulant for removing pollutants in water |
| CN106219715A (en) * | 2016-09-20 | 2016-12-14 | 济南大学 | A kind of preparation method of oxidation modification Pericarpium Musae coagulant |
-
2017
- 2017-03-03 CN CN201710122381.4A patent/CN106830256A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753124A (en) * | 2016-05-04 | 2016-07-13 | 济南大学 | Method for preparing watermelon peel coagulant for removing pollutants in water |
| CN106219715A (en) * | 2016-09-20 | 2016-12-14 | 济南大学 | A kind of preparation method of oxidation modification Pericarpium Musae coagulant |
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