CN106698548A - High-efficient phosphate removing agent and preparation method thereof - Google Patents
High-efficient phosphate removing agent and preparation method thereof Download PDFInfo
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- CN106698548A CN106698548A CN201710026789.1A CN201710026789A CN106698548A CN 106698548 A CN106698548 A CN 106698548A CN 201710026789 A CN201710026789 A CN 201710026789A CN 106698548 A CN106698548 A CN 106698548A
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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
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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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- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a high-efficient phosphate removing agent, which relates to the technical field of sewage treatment, and is prepared from the following components in percentage by mass: 30 percent to 70 percent of metallic compound, 10 percent to 20 percent of natural mineral powder,10 percent to 20 percent of flocculating agent,5 percent to 10 percent of activated carbon, and 5 percent to 10 percent of coagulant aid. According to the scheme, through providing the high-efficient phosphate removing agent, through a physics-chemistry combining method, and by utilizing cooperative interaction of the components, phosphorus in inorganic and organic phosphorus wastewater can be effectively removed; the high-efficient phosphate removing agent has the advantages of simplicity in preparation, convenience in use, low cost, less dosage, quickness in reaction, superior phosphate removing effect, wide applicable range, and the like.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of efficient dephosphorization agent and preparation method thereof.
Background technology
Since the industrial revolution, the exploitation of mineral aggravate environmental pollution, the increasing of the nitrogen and phosphorus of industrial and agricultural production discharge
Plus and accumulation make body eutrophication, algae and other planktonic organisms can be caused to break out sexual reproduction, cause fish and other biological
Mortality.Drinking water is contaminated will to cause very big threat to health, or even carcinogenic.In recent years, many lakes of China, water
Storehouse and river are frequently polluted, including the large area outburst of blue-green algae, offshore sea waters red tide are frequently occurred and coastal cities
The appearance of Enteromorpha, the generation of these water pollution events all with the pollution in the waters especially inorganic battalion such as inorganic nutrients thing nitrogen, phosphorus
Support that salinity is too high direct relation.
Phosphorus is one of a kind of important nutrient element in biosphere, is the principal element for causing body eutrophication.To the greatest extent
Pipe nitrogen phosphorus is all the important nutrient of biology, but the aquatile such as algae is more sensitive to phosphorus, and nitrogen hunger in water body is past
It is past to be supplemented by the microorganism of many fixed nitrogen, and phosphorus then can not.Research shows that phosphorus is most of body eutrophication pollution controls
One of important factor for controlling of system, is the hot subject of water pollution control technical field of research.
The method of waste water dephosphorization mainly includes：Bioanalysis, chemical precipitation method, physisorphtion, membrane technology facture and soil
Earth facture etc..Conventional biochemical sewage treatment and the biological phosphate-eliminating of reinforcing be difficult to ensure that effectively, economically dephosphorization, it is difficult to reach
To national phosphate《Integrated wastewater discharge standard》(GB8978--1996) primary standard 0.5mg/L (in terms of P) or two grades of marks in
The requirement of quasi- 1.0mg/L.
The content of the invention
It is an object of the invention to provide a kind of efficient dephosphorization agent, it is adaptable to the phosphorus-containing wastewater of low concentration, can quickly, it is high
Phosphorus in effect removal sewage, and the amount of coming into operation is few, greatly reduces dephosphorization cost.
Above-mentioned purpose of the invention technical scheme is that：A kind of efficient dephosphorization agent, including press
The component that row mass percent is prepared：Metallic compound 30%~70%, natural ore powder 10%~20%, flocculant 10%~
20%, activated carbon 5%~10%, flocculation aid 5%~10%；
The metallic compound includes aluminium salt, molysite, also including lanthanum compound；
The natural ore powder includes bentonite, also brilliant including nanometer ore deposit, and bentonitic main component is silica and aluminum oxide；
The flocculant is the one kind or any several in modified cation inorganic flocculating agent, organic polymer coargulator；
The flocculation aid is the one kind or any several in pH value regulator, oxidant.
By using above-mentioned technical proposal, in order to generate the phosphate compounds of non-solubility, for the change of chemical dephosphorization
Learn medicament be mainly slaine medicament, in many high volence metal ion adding of agent to sewage after all can be with the dissolubility in sewage
Phosphonium ion is combined, and generates the compound of insoluble, but is considered for economic reasons, and the slaine medicament for phosphorus precipitating is main
It is aluminium salt and molysite；Research shows that lanthanum is to PO4 3-With very strong characterization of adsorption, after putting into water body, in deposit surface shape
Into " the active coating " of 1mm, the soluble phosphate for effectively discharging in time and in capture deposit, so as to block heavy
The release channel of phosphorus in product thing, reaches and effectively suppress parsing of the Phosphorus in Sediments hydrochlorate when environment changes, and has reached dephosphorization and has consolidated
The purpose of phosphorus, effect is significant and with persistence；Bentonite is a kind of modified clay, and lanthanum compound is anti-with phosphate radical in water body
Should, the extremely low indissoluble phosphate radical precipitation of generation solubility, and be attached on bentonite clay particle carrier, it is then slow with bentonite clay particle
It is slow falling to drop to water bottom, effectively reduce phosphate radical precipitation and be attached to " active coating " surface to " active coating " capture
The influence that soluble phosphate is caused, phosphate radical precipitation can ensure that the new active force of replacement generation is strong and " live with bentonite sedimentation
Property coating "；Nanometer ore deposit crystalline substance is a kind of rich hole mineral adsorbent, and with molecular sieve structure, each aperture can wrap one
Phosphorus, superpower absorption force characteristic, the brilliant nanoscale hole number cells amount of nanometer ore deposit is more more than the activated carbon of same volume, so right
Faster, effect specific activity charcoal is stronger for the adsorption rate specific activity charcoal of phosphorus, and usage amount is much smaller than activated carbon；Some in waste water are organic
Thing embarrasses microorganism or general oxidizing process institute oxidation Decomposition, such as insecticide, detergent, it is therefore desirable to advanced treating, activated carbon
Adsorption capacity to organic matter is big, is widely used in Sewage advanced treatment, to most organic matters in waste water all
Effectively；When the effect of flocculant can not be played very well, flocculation aid can promote cohesion；Inorganic flocculating agent price is low, organic
High polymer coagulant consumption is few, flocculation ability strong, flco can be easily separated, and suitable flocculant is selected according to actual treatment situation.
Preferably, aluminium salt is the one kind or any several in aluminum sulfate, aluminium iron sulfate, aluminium chloride, aluminium chloride ferrum.
By using the coagulating sedimentation of above-mentioned technical proposal, aluminium salt to be：Al2(SO4)3+6H2O--2Al(OH)3+3SO42-+
6CO2；Al2(SO4)3+2PO4--2AlPO4+3SO4 2-。
Preferably, molysite is the one kind or any several in ferrous sulfate, ferric sulfate, iron chloride, frerrous chloride.
After using above-mentioned technical proposal, molysite soluble in water, the salt of slightly solubility, a side are on the one hand formed with phosphate radical
There are intense hydrolysis in face, and each polymerisation occurs while hydrolysis by dissolving, water suction, and generation has linear knot more long
The multinuclear hydroxo complex of structure, such as Fe2(OH)2 4+Deng the hydroxo complex of these iron content can be effectively reduced or be eliminated in water body
The electric potential (zeta potential) of colloid, rolling up the effect of sweeping by charge neutrality, adsorption bridging and flco makes coacervation of colloid, then by precipitation
Separation process is by phosphorus ligands；The coagulating sedimentation of molysite is：Fe2(SO4)3+3HCO3--Fe(OH)3+2SO4 2-+3CO2；
Fe3++PO4 3---FePO4↓。
Preferably, lanthanum compound is the one kind or any several in lanthana, lanthanum sulfate, lanthanum chloride.
By using above-mentioned technical proposal, the main matter of active component is played in lanthanum compound offer efficient dephosphorization agent
Lanthanum.
Preferably, brilliant one kind or any several in attapulgite, diatomite, sepiolite of nanometer ore deposit.
By using above-mentioned technical proposal, the nanocrystalline chromium of sepiolite and attapulgite can adsorb nano level small molecule
Polar substances, and diatomite, also for nanometer ore deposit crystalline substance provides sorption channel, is improved except that can adsorb micron-sized macromolecular substances
The brilliant adsorption effect of nanometer ore deposit.
Preferably, modified cation inorganic flocculating agent is Polyferric Sulfate silicon flocculant, and organic polymer coargulator is polyacrylamide
Amine.
By using above-mentioned technical proposal, Polyferric Sulfate silicon flocculant is high to the turbidity removal rate of waste water, percent of decolourization and COD clearances,
The most ammonia-nitrogen and whole phosphorus in decontaminated water can be removed；Polyacrylamide is high molecular weight water soluble polymer, insoluble in most of
Organic solvent, with good flocculability, can reduce the frictional resistance between liquid, and polyacrylamide is also acted as and helps solidifying
Agent, it is adaptable to ultra, has stronger adsorption bridging to act on.
Preferably, flocculation aid is calcium oxide, calcium hydroxide.
By using above-mentioned technical proposal, Ca2+The raising of concentration and pH value can increase tp removal rate, for insoluble
The formation of calcium phosphate, that play a major role is OH-, with the raising of pH value, the dissolubility of calcium phosphate can be reduced；Calcium hydroxide is also
, when the content of organics in waste water is too high or containing surfactant materials, foam can be also easy to produce as oxidant, influenceed
Settling of floccus, calcium hydroxide can destroy organic matter, to improve flocculating effect.
Another object of the present invention is to provide a kind of preparation method of efficient dephosphorization agent.
Above-mentioned purpose of the invention technical scheme is that：A kind of preparation side of efficient dephosphorization agent
Method, including the efficient dephosphorization agent described in above-mentioned any scheme, comprise the following steps：
A, each component raw material that efficient dephosphorization agent is prepared by above-mentioned mass percent；
B, liquid charging stock is sprayed on solid material and dried, mixed after solid material is milled；
C, all raw materials that will be mixed sinter 1h~2h at 350 DEG C~450 DEG C；
D, the product obtained by sintering is ground to particle size more than 200 mesh pulvis；
E, inspection, packing obtain finished product.
To sum up, a kind of efficient dephosphorization agent of the present invention, the method being combined by physical chemistry divides it using each group
Between Synergistic interaction can effectively remove phosphorus in inorganic, organic phosphorus-containing wastewater；Possess prepare it is simple, easy to use,
Cheap, adding less, reaction is quick, phosphor-removing effect is superior, it is applied widely the advantages of.
Brief description of the drawings
Fig. 1 is the preparation flow figure of efficient dephosphorization agent.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment 1
A kind of efficient dephosphorization agent, prepares according to following mass percent：
Metallic compound 30kg, wherein, aluminum sulfate 10kg, ferrous sulfate 15kg, lanthana 5kg；
Natural ore powder 10kg, wherein bentonite 5kg, attapulgite 3kg, diatomite 2kg；
Flocculant 10kg, wherein Polyferric Sulfate silicon flocculant 6kg, polyacrylamide 4kg；
Activated carbon 5kg；
Flocculation aid 5kg, wherein calcium oxide 2kg, calcium hydroxide 3kg.
According to flow as shown in Figure 1, efficient dephosphorization agent is prepared, concretely comprised the following steps：
A, each component raw material that efficient dephosphorization agent is prepared by above-mentioned mass percent；
B, liquid charging stock is sprayed on solid material and dried, mixed after solid material is milled；
C, all raw materials that will be mixed sinter 2h at 380 DEG C；
D, the product obtained by sintering is ground to particle size more than 200 mesh pulvis；
E, inspection, packing obtain finished product.
2~embodiment of embodiment 5
2~embodiment of embodiment 5 is that each group distribution ratio is different from the difference of embodiment 1, referring specifically to table 1.
The component proportion of the 2~embodiment of embodiment 5 of table 1
Production waste with Jiangning, Nanjing shelf factory is produced as sample from Jiangxi Hui Hai Environmental Protection Technology Co., Ltd
The poly- sea JX-305 dephosphorization agents that converge are represented as common dephosphorization agent, inquire into the phosphor-removing effect of efficient dephosphorization agent.
Power taking plating iron plate water 6000mL is Wastewater Sample, carries out sewage phosphorus content detection and dephosphorization experiment, what detection was used
Capital equipment is connectionization science and technology multi-parameter water quality analyzer, with F-HZ-HJ-SZ-0039 water quality-total phosphorus yield-ammonium molybdate point
Light photometry is standard.It is 21.7mg/L, raw water PH=6.5 to measure Wastewater Sample always phosphorous.
Take Wastewater Sample and be divided into six groups, every group of sewage 1000mL adds the solid powdery of 1~embodiment of implementation 5 respectively
Efficient dephosphorization agent and each 0.8g of common dephosphorization agent, be converted into 0.8kg/ tons of sewage, stir 20min, staticly settle 50min.
Take supernatant liquor and determine pH value and total phosphorus content, result of the test is referring to table 2.
The dephosphorization result of the test of table 2
The sewage PH=7.1 after common dephosphorization agent dephosphorization treatment is measured, total phosphorus content is 1.7mg/L, and clearance is 92.2%, nothing
Method reaches national two grades of discharge standards of 1.0mg/L；The average PH=7.5 of sewage after efficient dephosphorization agent dephosphorization treatment, it is average total
Phosphorus content is 0.29mg/L, and average tp removal rate is up to 98.7%.Contrast understands that the efficient dephosphorization agent of the application can reach country
The discharge standard of one-level 0.5mg/L, on the premise of same phosphor-removing effect is reached, consumption is more saved；Under equal consumption, dephosphorization
The far super common dephosphorization agent of effect.
Six groups of test groups after dephosphorization is processed simultaneously place observation three days.Observation learns, the examination of common dephosphorization agent treatment
Test group to second day, the 3rd day water turbidity, darken, and the equal water quality of test group sewage of efficient dephosphorization agent treatment it is limpid,
Without color change.
In summary, the efficient dephosphorization agent of the application has the advantages that rapid dephosphorization, excellent effect and lasting, consumption is few,
Sewage total phosphorus content after treatment disclosure satisfy that the discharging standards of sewage phosphorus content；Further, since being thrown when sewage is processed
It is high-volume small, therefore the sludge quantity for producing is few, greatlys save the cost for the treatment of sludge.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected by Patent Law in the right of invention.
Claims (8)
1. a kind of efficient dephosphorization agent, it is characterised in that：Including the component prepared by following mass percent：Metallic compound 30%
~70%, natural ore powder 10%~20%, flocculant 10%~20%, activated carbon 5%~10%, flocculation aid 5%~10%；
The metallic compound includes aluminium salt or molysite, also including lanthanum compound；
The natural ore powder includes bentonite, also brilliant including nanometer ore deposit, and bentonitic main component is silica and aluminum oxide；
The flocculant is the one kind or any several in modified cation inorganic flocculating agent, organic polymer coargulator；
The flocculation aid is the one kind or any several in pH value regulator, oxidant.
2. a kind of efficient dephosphorization agent according to claim 1, it is characterised in that：The aluminium salt be aluminum sulfate, aluminium iron sulfate,
One kind or any several in aluminium chloride, aluminium chloride ferrum.
3. a kind of efficient dephosphorization agent according to claim 1, it is characterised in that：The molysite be ferrous sulfate, ferric sulfate,
One kind or any several in iron chloride, frerrous chloride.
4. a kind of efficient dephosphorization agent according to claim 1, it is characterised in that：The lanthanum compound is lanthana, sulfuric acid
One kind or any several in lanthanum, lanthanum chloride.
5. a kind of efficient dephosphorization agent according to claim 1, it is characterised in that：It is attapulgite, silicon that the nanometer ore deposit is brilliant
One kind or any several in diatomaceous earth, sepiolite.
6. a kind of efficient dephosphorization agent according to claim 1, it is characterised in that：The modified cation inorganic flocculating agent is
Polyferric Sulfate silicon flocculant, organic polymer coargulator is polyacrylamide.
7. a kind of efficient dephosphorization agent according to claim 1, it is characterised in that：The flocculation aid is calcium oxide, hydroxide
Calcium.
8. a kind of preparation method of efficient dephosphorization agent, it is characterised in that：Including efficient described in claim 1~7 any one
Dephosphorization agent, comprises the following steps：
A, each component raw material that efficient dephosphorization agent is prepared by above-mentioned mass percent；
B, liquid charging stock is sprayed on solid material and dried, mixed after solid material is milled；
C, all raw materials that will be mixed sinter 1h~2h at 350 DEG C~450 DEG C；
D, the product obtained by sintering is ground to particle size more than 200 mesh pulvis；
E, inspection, packing obtain finished product.
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