CN102417225A - Enteromorpha flocculant and preparation process thereof - Google Patents
Enteromorpha flocculant and preparation process thereof Download PDFInfo
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- CN102417225A CN102417225A CN2011103168655A CN201110316865A CN102417225A CN 102417225 A CN102417225 A CN 102417225A CN 2011103168655 A CN2011103168655 A CN 2011103168655A CN 201110316865 A CN201110316865 A CN 201110316865A CN 102417225 A CN102417225 A CN 102417225A
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- enteromorpha
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Abstract
The invention relates to an enteromorpha flocculant and a preparation process thereof. The preparation process comprises the following steps that: a raw material enteromorpha is dried and crushed; the enteromorpha and deionized water are mixed according to a mass ratio of 1:70-75, and are stirred and extracted in an 85-90 DEG C constant-temperature water bath for 3-4 hours; and an extract is centrifugally separated, and a supernatant is diluted by adding an equal volume of deionized water to obtain the enteromorpha flocculant. The enteromorpha flocculant is applied to the coagulation treatment of water, so that the turbidity of water can be reduced, and the organic matter in the water can be removed. The enteromorpha flocculant has a simple and quick production process, a wide application range and safety and nontoxicity, and a new way of thinking is provided for the reutilization technology of disaster green algae.
Description
(1) technical field
The present invention relates to Enteromorpha flocculation agent and preparation technology thereof, belong to the disaster green alga and handle and the reutilization technology field.
(2) background technology
Developing rapidly of industrial or agricultural, population increase, the water resources that the mankind depend on for existence is poor day by day.Water resources crisis has become the important factor of restriction China Economic development.At present, China's water resources has received pollution in various degree, and increasing trend is arranged.For the conserve water resource, improve the utilization ratio of water, alleviate the waste water pollution on the environment, we must strengthen the improvement to trade effluent and sewage.In water technology; Coagulating sedimentation is to use the most generally, the most extensively and lower-cost key technique; It is determining operation condition, running cost and the final outflow water water quality of flow, thereby becomes one of research contents important in the field of environment engineering.The quality of coagulating treatment effect depends on the quality of flocculation agent to a great extent.Therefore, novel, flocculation agent is the mainstay industry of giving priority in the water treatment environmental technology field all the time efficiently, also is the basic industry of water and wastewater industry and water pollution control engineering and equipment innovation and development.Though through increasing added amount of chemical, add coagulant aids etc. and can improve coagulation effect, still there is the restriction of many aspects in it to pollutant removal, thus development of new coagulating agent is very necessary efficiently.Traditional inorganic coagulant mainly comprises aluminium system and ferric flocculant, and its applicating history is long, is widely used in the desliming processing of water purification processing and sewage etc.; It is strong to have the turbidity removal decoloring ability; To suspended substance removal rate advantages of higher, but low-molecular inorganic coagulating agent cost is higher, and corrodibility is bigger; Aluminium is that coagulating agent also exists toxicity problem, and is undesirable at some occasion purifying water effect.Compare with inorganic coagulant, organic coagulating agent consumption is few, and coagulation speed is fast; Salt, medium and the ambient temperature effect of being coexisted is little; Treating processes is short, and the sludge quantity of generation is few, at home and abroad is widely used in the processing of waste water such as oil, printing and dyeing, food, chemical industry, papermaking.But it is expensive that it is worth, and coagulating agent itself or its hydrolysis mostly, degraded product are poisonous, and application receives certain restriction.
Enteromorpha belongs to green algae, is a genus of Chlorophyta Ulvaceae, extensively is distributed in each ocean, the whole world; In recent years because Global climate change causes the green tide of Enteromorpha to break out again and again; A large amount of floating banks that gather of Enteromorpha block the fairway serious threat inshore fishery, tourism development.From over 2007, Qingdao, Weihai, sunshine, each sandy beach, bathing beach of coastal seashore all had Enteromorpha in various degree to occur.Government all wants the manpower and materials establishment officer and the Large-Scale Equipment of labor to clear up every year.In mid-June, 2008, a large amount of Enteromorphas drift to the surrounding waters, Qingdao from marine site, Huanghai Sea middle part, once once the 2008 Summer Olympics regatta sailing are threatened.Therefore explore the effective way of ocean green tide by product-Enteromorpha comprehensive utilization of resources, significant for environment, ecology, economic problems that solution ocean Enteromorpha disaster is brought.
At present for Enteromorpha be recycled documents and materials seldom, report and can Enteromorpha be converted into bio-oil.CN101659874A (CN200910017836.1) discloses a kind of method of preparing biological oil by thermally cracking Enteromorpha prolifera; With Enteromorpha pulverize, dry, pulverize and be placed on cracking in the cracking reactor; Split product after overcooling, the condensability component in the pyrolysis gas, just bio oil gets into liquid phase; Reclaim gas and solid phase simultaneously respectively, cracking temperature is 500 ℃～600 ℃; Non-condensable gases in the said pyrolysis gas, a part are recovered to pyrolysis oven as secondary air, and another part is recovered to roasting kiln, as fuel.But about 1500 yuan/ton in the market as the bio oil price of low-grade fuel, and this bio oil through deep processing after marketable value thousands of units even the unit up to ten thousand of reaching per ton.Administer the income that Enteromorpha pollutes even bypass, after forming large-scale production, cost reduction, the technology that Enteromorpha is become bio oil expends financial resources equally.CN101767921A (CN201010109261.9) provides a kind of method of handling mud with Enteromorpha as coagulant aids: 1. water ratio is lower than 15% dried Enteromorpha coagulant aids and water ratio and is higher than 85% sediment of pond mud and mixes and carry out pre-treatment, its proportioning is according to the proportion 1 of dried Enteromorpha and over dry mud: 10-1: 30 dispose; 2. dispose the flocculating polymer agent solution, making its concentration is 1 ‰-5 ‰; 3. polymeric flocculant is progressively added pretreated sediment of pond mud and mix, until flocs unit occurring, according to different sediment of pond kinds, the weight proportion of flocculating polymer agent solution and pre-treatment pond bed mud mud is 1: 50-1: 150; 4. the slurries that flocculate deposition was carried out aftertreatment after 30 minutes.
(3) summary of the invention
In order to overcome the deficiency of existing coagulating agent technology, the present invention provides a kind of Enteromorpha flocculation agent and preparation technology thereof.
Technical scheme of the present invention is following:
A kind of Enteromorpha flocculation agent, measuring density in the time of 20 ℃ is 1.15 ± 0.05Kg/m
3, Zeta potential is-40 ± 3mV, pH is the transparent thick liquid of 6.73-6.86; Be to extract from Enteromorpha by following method to make:
Enteromorpha is cleaned, oven dry, is pulverized, cross 100 mesh sieves, with gained Enteromorpha dry powder and deionized water with 1: the mass ratio of 70-75 mixes; Stirring and leaching 3-4h in 85-90 ℃ of water bath with thermostatic control; With the vat liquor spinning, get the deionized water dilution that supernatant adds equal volume, promptly get.
According to the present invention, a kind of preparation method of said Enteromorpha flocculation agent, step is following:
With the Enteromorpha is raw material, and Enteromorpha is cleaned, and after 65-70 ℃ of oven for drying, in the magnetic force kibbler, is ground into powder, crosses 100 mesh sieves, gets Enteromorpha dry powder.With Enteromorpha dry powder and deionized water with 1: the mass ratio of 70-75 mixes; Stirring and leaching 3-4h in 85-90 ℃ of water bath with thermostatic control; Solution after lixiviate speed with 4500-5000r/min in whizzer is separated 20-25min; Take out the deionized water dilution of supernatant adding equal volume, obtain the Enteromorpha flocculation agent.
The present invention prepares the extracting solution of Enteromorpha, is applied to the coagulating treatment of water treatment procedure treatment of simulated water sample and actual water sample, has obtained better effects, is a kind of flocculation agent cheaply.
The application of Enteromorpha flocculation agent according to the invention, as novel water treatment agent, can use separately or with the composite use of inorganic coagulant, be used for feedwater, wastewater treatment, can be widely used in the coagulating treatment of oil production, papermaking, mining, daily-use chemical industry.Also can with the composite use of existing polymeric flocculant, the consumption 40-60% of the polymeric flocculant of alternative chemosynthesis.
Like the application with above-mentioned Enteromorpha flocculation agent, the Enteromorpha flocculation agent is used for water treatment procedure separately, and consumption is a 0.1-0.5mL/L water.
Like the application with above-mentioned Enteromorpha flocculation agent, during the composite use of Enteromorpha flocculation agent and inorganic coagulant, the mass ratio 1 of Enteromorpha flocculation agent and inorganic coagulant: 5-8, the consumption of Enteromorpha flocculation agent are 0.1-0.5mL/L water.Said inorganic coagulant is iron(ic)chloride, Tai-Ace S 150 or polyaluminium sulfate.
Enteromorpha flocculation agent of the present invention is applied to water treatment field and compared with prior art has following excellent results:
Enteromorpha flocculation agent of the present invention belongs to natural macromolecule flocculating agent in the water treatment field, is that the Enteromorpha that breaks out with periodicity is a raw material, adopts the method for water-bath lixiviate to be prepared from; The Enteromorpha flocculation agent is used for the coagulating treatment process, can removes the organism in the water, reduce the turbidity of water; Characteristics such as the present invention has that production technique is simple and direct, economy, suitability are strong; Can be adaptable across feedwater, wastewater treatment, simultaneously, also the Enteromorpha disaster for outburst regularly provides a new solution thinking.
The present invention is applied to the coagulating treatment process with enteromorpha extract as a kind of flocculation agent, and Enteromorpha is rich in multiple macromolecular substance such as glucide, protein, fat, robust fibre, and its active group blob is many; The structure variation; Safety non-toxic can be brought into play the good adsorption bridging action in coagulation process, thereby impels coacervation of colloid; Be used to feed water processing with waste water reaches good coagulation effect.
(4) embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1:
The used Enteromorpha of present embodiment is taken from first bathing beach, Qingdao, and Enteromorpha is cleaned, and after 70 ℃ of oven for drying, in the magnetic force kibbler, is ground into powder, crosses 100 mesh sieves, gets the Enteromorpha dry sample.The Enteromorpha dry sample is mixed with the mass ratio of deionized water with 1: 75; Stirring and leaching 4h in 90 ℃ of waters bath with thermostatic control; Solution after the lixiviate in high-speed centrifuge with the speed spinning 20min of 5000r/min; After getting supernatant and adding the deionized water dilution of equal volume, get the yellow-green colour transparent liquid, be the Enteromorpha flocculation agent.
Use the Enteromorpha flocculation agent of embodiment 1 to be used for water treatment procedure treatment of simulated water sample and actual water sample, specify as follows.
The experiment water sample:
Test used water sample and have two kinds: a kind of is humic acids-kaolin simulated water sample, and the preparation method of water sample is referring to Xu Xiuming etc.: the Alb form is removed the effect and the Mechanism Study of humic acid, Environmental Science and Engineering institute of Shandong University in the Poly aluminum Chloride (PAC); Environmental science, 2008,29 (11): 3064-3070: take by weighing the 1g humic acid; Be in harmonious proportion with small amount of deionized water, and add a certain amount of NaOH regulator solution pH, promote dissolving; Constant volume is mixed with 1gL to 1L behind the magnetic agitation 0.5h
-1The simulated water sample stock solution.Weigh 1g kaolin, add the appropriate amount of deionized water dissolving, pour into behind the magnetic agitation 0.5h in the graduated cylinder of 1L and be settled to 1L, leave standstill 0.5h after, draw upper strata 500ml and be the used kaolin suspension liquid of experiment.During coagulation experiment, be in harmonious proportion with tap water, being made into concentration is 10mgL
-1The humic acid simulated water sample, utilizing the kaolin suspension liquid to regulate raw water turbidity is 15.0 ± 0.50NTU, gets humic acids-kaolin simulated water sample.Testing used another water sample is to draw yellow reservoir water actual water sample, takes from Jinan City magpie China waterworks.
Experimental example one:
The Enteromorpha flocculation agent of preparation among the embodiment 1 is used for humic acids-kaolin simulated water sample coagulating treatment, and it is following that the gained result lists in table 1. raw water quality situation: pH value is 8.37-8.4, and turbidity is 15.1-15.4NTU, UV
254Be 0.289-0.295cm
-1, DOC is 4.948-5.116mg/L.
Table 1 Enteromorpha flocculation agent is handled the effect of humic acids-kaolin simulated water sample
Visible from above result, the Enteromorpha flocculation agent is handled humic acids-kaolin simulated water sample, for turbidity and UV
254Removal effect better, general for the removal effect of DOC and since Enteromorpha this as a kind of organism, so the Enteromorpha dosage is during greater than 0.1mL, the removal efficient of DOC descends gradually, when 0.1mL, reaches peak.
Experimental example two:
The Enteromorpha flocculation agent of embodiment 1 preparation is used to draw the coagulating treatment of yellow reservoir water actual water sample, and the raw water quality situation is following: the pH value is 8.41-8.45, and turbidity is 4.35-4.60NTU, UV
254Be 0.036-0.040cm
-1, DOC is 3.688-3.787mg/L.Result is listed in table 2.
Table 2 Enteromorpha flocculation agent is handled the effect of drawing yellow reservoir water actual water sample
Visible from above result, the Enteromorpha flocculation agent is handled and drawn yellow reservoir water actual water sample, and is better for the removal effect of turbidity and DOC; The Enteromorpha dosage is during greater than 0.1mL; The removal efficient of DOC descends gradually, and removal effect preferably can reach 20% when 0.1mL, and the Enteromorpha flocculation agent is for UV
254Removal effect be not very desirable.
Experimental example three:
Enteromorpha flocculation agent and the Tai-Ace S 150 inorganic coagulant of embodiment 1 preparation is composite, be used to draw the coagulating treatment (dosage is in aluminium, and the Enteromorpha add-on is 0.1mL) of yellow reservoir water actual water sample, the while contrasts with independent Tai-Ace S 150 result.The raw water quality situation is following: the pH value is 8.40-8.42, and turbidity is 4.39-4.61NTU, and UV254 is 0.033-0.038cm
-1, DOC is 3.625-3.754mg/L.Result is listed in table 3.
The effect of yellow reservoir water actual water sample is drawn in the composite processing of table 3 Tai-Ace S 150-Enteromorpha
Can know that from above result Tai-Ace S 150 and the composite aftertreatment of Enteromorpha flocculation agent are drawn yellow reservoir water actual water sample and had effect preferably, for turbidity, the UV of low turbidity water
254And DOC has higher removal, can improve about 1/3rd than the effect of this water sample of Tai-Ace S 150 individual curing.
Claims (3)
1. an Enteromorpha flocculation agent is characterized in that measuring density for 20 ℃ is 1.15 ± 0.05Kg/m
3, Zeta potential is-40 ± 3mV, pH is the transparent liquid of 6.73-6.86; Be to extract from Enteromorpha by following method to make:
Enteromorpha is cleaned, oven dry, is pulverized, cross 100 mesh sieves, with gained Enteromorpha dry powder and deionized water with 1: the mass ratio of 70-75 mixes; Stirring and leaching 3-4h in 85-90 ℃ of water bath with thermostatic control; With the vat liquor spinning, get the deionized water dilution that supernatant adds equal volume, promptly get.
2. the preparation method of the said Enteromorpha flocculation agent of claim 1, step is following:
With the Enteromorpha is raw material, and Enteromorpha is cleaned, and after 65-70 ℃ of oven for drying, in the magnetic force kibbler, is ground into powder, crosses 100 mesh sieves, gets Enteromorpha dry powder.With Enteromorpha dry powder and deionized water with 1: the mass ratio of 70-75 mixes; Stirring and leaching 3-4h in 85-90 ℃ of water bath with thermostatic control; Solution after lixiviate speed with 4500-5000r/min in whizzer is separated 20-25min; Take out the deionized water dilution of supernatant adding equal volume, obtain the Enteromorpha flocculation agent.
3. the application of the said Enteromorpha flocculation agent of claim 1, wherein said Enteromorpha flocculation agent are used for feedwater, wastewater treatment, and the water coagulation of oil production, papermaking, mining, daily-use chemical industry is handled; The perhaps composite water treatment field that is applied to of Enteromorpha flocculation agent and inorganic coagulant.
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| CN 201110316865 CN102417225B (en) | 2011-10-18 | 2011-10-18 | Enteromorpha flocculant and preparation process thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989427A (en) * | 2012-12-22 | 2013-03-27 | 山东大学 | Enteromorpha absorbent and preparation technology thereof |
| CN103058342A (en) * | 2012-12-28 | 2013-04-24 | 山东大学 | Polyacrylamide-enteromorpha dehydration flocculant and its preparation and use methods |
| CN103464120A (en) * | 2013-10-12 | 2013-12-25 | 孟祥福 | Method for preparing absorbent for preventing and treating water body pollution from enteromorpha |
| CN108178488A (en) * | 2017-12-12 | 2018-06-19 | 常州莱尚纺织品有限公司 | A kind of preparation method of sludge dehydrating agent |
| CN109987690A (en) * | 2019-04-02 | 2019-07-09 | 江苏师范大学 | A kind of algal polysaccharides base composite water disposal agent and the preparation method and application thereof |
| CN110002562A (en) * | 2019-04-04 | 2019-07-12 | 江苏师范大学 | A kind of sea grass polysaccharide flocculation aid and the preparation method and application thereof |
| CN113845196A (en) * | 2021-11-11 | 2021-12-28 | 山东建筑大学 | Method for preparing flocculant from enteromorpha and applying flocculant to heavy metal wastewater treatment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989427A (en) * | 2012-12-22 | 2013-03-27 | 山东大学 | Enteromorpha absorbent and preparation technology thereof |
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| CN103464120A (en) * | 2013-10-12 | 2013-12-25 | 孟祥福 | Method for preparing absorbent for preventing and treating water body pollution from enteromorpha |
| CN108178488A (en) * | 2017-12-12 | 2018-06-19 | 常州莱尚纺织品有限公司 | A kind of preparation method of sludge dehydrating agent |
| CN109987690A (en) * | 2019-04-02 | 2019-07-09 | 江苏师范大学 | A kind of algal polysaccharides base composite water disposal agent and the preparation method and application thereof |
| CN110002562A (en) * | 2019-04-04 | 2019-07-12 | 江苏师范大学 | A kind of sea grass polysaccharide flocculation aid and the preparation method and application thereof |
| CN113845196A (en) * | 2021-11-11 | 2021-12-28 | 山东建筑大学 | Method for preparing flocculant from enteromorpha and applying flocculant to heavy metal wastewater treatment |
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