CN105858787A - Dephosphorization filling X-Phos substrate and preparation method thereof - Google Patents
Dephosphorization filling X-Phos substrate and preparation method thereof Download PDFInfo
- Publication number
- CN105858787A CN105858787A CN201610269334.8A CN201610269334A CN105858787A CN 105858787 A CN105858787 A CN 105858787A CN 201610269334 A CN201610269334 A CN 201610269334A CN 105858787 A CN105858787 A CN 105858787A
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- CN
- China
- Prior art keywords
- dephosphorization
- attapulgite clay
- substrate
- filler
- water
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Classifications
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
Abstract
The invention relates to a dephosphorization filling X-Phos substrate and a preparation method thereof, being applicable to the field of preparation of water treatment materials. The filling is mainly prepared from the following raw materials: CaO2, attapulgite clay, adhesive and balance of water. The preparation method comprises the steps of: respectively carrying out pretreatment by special steps on the raw materials, uniformly mixing the raw materials according to a specific proportion, adding water for stirring; preparing the ready mixed slurry into cylindrical particles of certain diameter and height; and airing at certain temperature after shaping. The dephosphorization filling X-Phos substrate has easily available raw materials, the dephosphorization effect of a finished product is highly efficient and stable, and the filling can be used for deep dephosphorization for systems such as artificial wet lands, biological filters and tail water purification.
Description
Technical field
The present invention relates to Water Pollution Control Engineering field, in particular it relates to a kind of for water body dephosphorized filler X-Phos base
Matter and preparation method thereof.
Background technology
The wawter bloom caused by body eutrophication or red tide can cause deteriorating water quality, and aquatic ecosystem is seriously broken
Bad, and then economic development, social stability and human health can be threatened.Body eutrophication is primarily due to Water, phosphorus etc.
Nutrient substance is more to be caused, and wherein phosphorus is considered as the key controlling eutrophication, therefore study the application of dephosphorization filler
Control to body eutrophication is significant.The sewage the most relatively low to non-industrial wastewater i.e. pollution level, raw
The technology such as thing filter tank, artificial swamp are the most conventional, and in this type of technology, the selection of filler is one of key problem, directly affects
The removal effect of nitrogen phosphorus.Being applied in the filler of sewage disposal at present, it is single to there is dephosphorization mechanism in majority, and efficiency is low etc. asks
Topic, reports less to the substrate of deep phosphorous removal, instant effect.
Wang Changbo et al. Fe, activated carbon and some catalytic elements are that raw material invention one can reduce phosphorus content in water body
Can synchronize again to remove the filler (application number 201310315294.2) of colourity in water body, reach to synchronize the purpose of decolouring dephosphorization,
But manufacturing process is complex, higher to temperature requirement, containing Determination of multiple metal elements in catalytic elements, easily cause secondary pollution.
Construction waste cement brick is crushed by Liu Chaoxiang etc., makes little granule as dephosphorization adsorbent (application number 201310420535.X),
Make construction waste recycling, but its dephosphorization principle be mainly physical absorption, adsorb saturated after under certain condition may
Phosphorus is discharged in water body.Liu Zhijun etc. have invented a kind of renewable modified haydites of book structure dephosphorization filler (application number
201510190580.X), possess the ability of reusing, but pH is required higher by preparation process, and filler saturated extent of adsorption phase
To relatively low, it is 20 ~ 25mg/g.Li Xudong etc. are with flyash, Gypsum Fibrosum, ardealite, cement, aluminium powder and water for raw material according to a certain ratio
Prepare a kind of reinforced sewage dephosphorization filler (application number 201410005588.X), but dephosphorization mechanism with physical absorption is equally
Main, upon adsorption saturated after just lose phosphorus removal functional, in order to solve this problem, filler is improved by Li Xudong etc., invents
A kind of novel polymeric aluminum chloride dephosphorization filler (application number 201410784847.3), makes phosphorus adsorption function efficient stable, but raw material
The weight proportion of middle polyaluminium chloride is too much, reaches 60% ~ 90%, easily causes Al content in water body too much.
Applicant's early-stage Study shows natural attapulgite clay internal porous road, and specific surface area is big, has good absorption
Performance, can show efficient phosphorus adsorption function more than 700 DEG C by it after heat treatment.Ca2+Can be raw with the phosphorus reaction in water body
Becoming precipitation, wherein calcium hydroxy phosphate is the most stable, so when in water body containing Ca and P composition, the most how can be with di
Calcium speciation exists.Calcium hydroxy phosphate is a kind of novel inorganic macromolecular material, and in human body, calcium constituent is mainly brilliant with calcium hydroxy phosphate
Presented in body, will not work the mischief on human health in the presence of it is in water body impact on environment, can be considered a kind of raw
State friendly material.So when in certain filler containing attapulgite clay with during Ca, not only can ensure that the high efficiency but also not of dephosphorization
Ecological environment can be caused any adverse effect.
Summary of the invention
For reaching the effect of deep phosphorous removal, it is an object of the invention to provide a kind of dephosphorization filler X-Phos substrate and preparation thereof
Method, X is defined as " removal ", and Phos represents phosphate, utilizes CaO2, attapulgite clay, adhesive and water surplus be by a definite proportion
Example carries out mix and blend and is pressed into cylindrical pellet, can be as dephosphorization filler.Primary raw material: CaO2Powder (CaO2Content 50% ~
60%), attapulgite clay, adhesive, water.Filler weight constituent is: CaO2Powder 50% ~ 55%, natural attapulgite clay 5%
~ 10%, modified attapulgite clay 30% ~ 35%, adhesive 3% ~ 6%, water 3% ~ 6%.Being cylinder during the last molding of filler, bottom surface is straight
Footpath is 5 ~ 50mm, and height is 5 ~ 50mm.Maximum phosphorus adsorption capacity is 200mg/g.
Described adhesive is one or both in sodium silicate, polyvinyl alcohol gluing agent.
Except above-mentioned primary raw material, filler manufacturing process can also add a small amount of MgO2, activated carbon, the thing such as flyash
Matter.MgO2, the content of activated carbon or flyash be 1%.
Using method: the present invention be directed to the advanced treating of phosphorus, thus use time will with other kind fillers with the use of,
To reach water quality comprehensive purifying effect.Usage amount is preferably the 1% of total filler consumption.
Specific make step:
(1) CaO2Powder and attapulgite clay cross 200 eye mesh screens.
(2) part attapulgite clay is carried out 800 DEG C of high temperature modified process.
(3), under room temperature, each component is carried out by a certain percentage mix and blend.
(4) slurry being stirred is pressed into cylinder granule air-dry under uniform temperature.
Dephosphorization mechanism: natural attapulgite clay has good adsorptivity and water swelling, after more than 700 DEG C heat treatments
Phosphorus absorption property can further enhance；CaO2Powder meets water can react generation Ca+, generation precipitation can be reacted with phosphate radical；Natural recessed
Convex rod clay water-swellable can increase CaO2With the contact area of water, being total to of natural attapulgite clay and modified attapulgite clay
With under adsorption, phosphate radical can constantly with Ca+Reaction generates di calcium deposit, and the function of attapulgite is " trade and investment promotion ",
CaO2Function be " taking root ", reach the effect of deep phosphorous removal.
Advantage:
(1) raw materials is environmental friendliness shaped material, will not cause secondary pollution.
(2) under the comprehensive function of physical absorption and two kinds of approach of chemical reaction, dephosphorization is carried out, it is ensured that the high efficiency of dephosphorization.
(3) filler becomes to produce low cost, the cycle is short, mechanization degree is high, can bear current and impact for a long time, facilitates engineering to answer
With.
(4) CaO2React with water and can generate O2, content of oxygen dissolved in water while dephosphorization, can be increased.
Detailed description of the invention
Embodiment 1: laboratory Static simulation test I
Its TP is made to be 1.2mg/L at laboratory configuration potassium dihydrogen phosphate, selection cylinder filler, diameter 5mm, high 10mm,
Filler preparation process with above-mentioned, material composition weight proportion: CaO2Powder 50%, natural attapulgite clay 8%, modified attapulgite glues
Soil 31%, sodium silicate 1%, polyvinyl alcohol gluing agent 3%, water 4%, MgO2 1%, activated carbon 1%, flyash 1%.Take 1L potassium dihydrogen phosphate
Solution, adds two fillers, and after 8h, water sampling detects, and the results are shown in Table 1.
Table 1 water-quality ratio is relatively
| pH | TP | |
| Initial water quality | 6.8 | 1.24mg/L |
| Water quality after 8h | 10.5 | 0.21mg/L |
Embodiment 2: laboratory Static simulation test II
Its TP is made to be 1.2mg/L at laboratory configuration potassium dihydrogen phosphate, selection cylinder filler, diameter 10mm, high 20mm,
Filler preparation process with above-mentioned, material composition weight proportion: CaO2Powder 50%, natural attapulgite clay 6%, modified attapulgite glues
Soil 30%, activated carbon 5%, sodium silicate 1%, polyvinyl alcohol gluing agent 4%, water 4%.Take 5L potassium dihydrogen phosphate, add two and fill out
Material, after 12h, water sampling detects, and the results are shown in Table 2.
Table 2 water-quality ratio is relatively
| pH | TP | |
| Initial water quality | 6.9 | 1.22mg/L |
| Water quality after 8h | 9.8 | 0.20mg/L |
Embodiment 3: laboratory substrate dephosphorization experiment I
Its TP is made to be 1.2mg/L at laboratory configuration potassium dihydrogen phosphate, selection cylinder filler, diameter 10mm, high 50mm,
Filler preparation process with above-mentioned, material composition weight proportion: CaO2Powder 52%, natural attapulgite clay 6%, modified attapulgite glues
Soil 32%, sodium silicate 2%, polyvinyl alcohol gluing agent 2%, water 6%.
Use the lucite post of internal diameter 10cm, high 20cm as reaction vessel, in reactor, put filler 20g, keep
Inflow 50L/d, after three days, water sampling detects, and the results are shown in Table 3.
Table 3 water-quality ratio is relatively
| pH | TP | |
| Influent quality | 6.8 | 1.22mg/L |
| Effluent quality | 10.0 | 0.26mg/L |
Embodiment 4: laboratory substrate dephosphorization experiment II
Its TP is made to be 1.2mg/L at laboratory configuration potassium dihydrogen phosphate, selection cylinder filler, diameter 20mm, high 20mm,
Filler preparation process with above-mentioned, material composition weight proportion: CaO2Powder 51%, natural attapulgite clay 10%, modified attapulgite
Clay 31%, flyash 1%, sodium silicate 2%, polyvinyl alcohol gluing agent 1%, water 4%.
Use the lucite post of internal diameter 10cm, high 20cm as reaction vessel, in reactor, put filler 30g, keep
Inflow 80L/d, after three days, water sampling detects, and the results are shown in Table 4.
Table 4 water-quality ratio is relatively
| pH | TP | |
| Influent quality | 6.8 | 1.18mg/L |
| Effluent quality | 10.3 | 0.23mg/L |
Embodiment 5: artificial swamp simulation experiment
Select cylinder filler, diameter 50mm, high 5mm, filler material composition proportion: CaO2Powder 52%, natural attapulgite clay
5%, modified attapulgite clay 35%, sodium silicate 2%, polyvinyl alcohol gluing agent 3%, water 3%.It is used for simulating Manual moist by prepared filler
The ground purification to sanitary sewage, consumption is the 1% of total filler weight.The stable rear water sampling of wetland is monitored, and the results are shown in Table
5。
Table 5 Inlet and outlet water water quality
| pH | TP | |
| Initial water inlet | 7.8 | 2.00mg/L |
| The water outlet of substrate without X-Phos | 8.1 | 0.28mg/L |
| There is X-Phos substrate water outlet | 8.9 | 0.12mg/L |
Embodiment 6: artificial swamp engineer applied
Select cylinder filler, diameter 40mm, high 30mm, filler material composition proportion: CaO2Powder 55%, natural attapulgite glues
Soil 7%, modified attapulgite clay 30%, sodium silicate 1%, polyvinyl alcohol gluing agent 2%, water 4%, activated carbon 1%.Prepared filler is used for
In the artificial swamp demonstration project of somewhere, this artificial swamp is applied to bad V class river water purification, and consumption is total filler weight
1%.The stable rear water sampling of wetland is monitored, and the results are shown in Table 6.
Table 6 Inlet and outlet water water quality
| pH | TP | |
| Influent quality | 7.8 | 1.92mg/L |
| Effluent quality | 8.3 | 0.13mg/L |
Claims (9)
1. a dephosphorization filler X-Phos substrate, it is characterised in that described dephosphorization filler X-Phos substrate is mainly by following material
Constitute: CaO2Powder, attapulgite clay, adhesive, water.
Dephosphorization filler X-Phos substrate the most according to claim 1, it is characterised in that described dephosphorization filler X-Phos substrate
One-tenth is grouped into: CaO2Powder 50% ~ 55%, natural attapulgite clay 5% ~ 10%, modified attapulgite clay 30% ~ 35%, adhesive
3% ~ 6%, water 3% ~ 6%.
Dephosphorization filler X-Phos substrate the most according to claim 2, it is characterised in that described modified attapulgite clay is by sky
So attapulgite clay carries out 800 DEG C and high temperature modified is prepared from.
Dephosphorization filler X-Phos substrate the most according to claim 1, it is characterised in that this dephosphorization filler X-Phos substrate is
Cylinder, basal diameter is 5 ~ 50mm, and height is 5 ~ 50mm, and maximum phosphorus adsorption capacity is 200mg/g.
Dephosphorization filler X-Phos substrate the most according to claim 1, it is characterised in that described CaO2CaO in powder2Contain
Amount 50% ~ 60%.
Dephosphorization filler X-Phos substrate the most according to claim 1, it is characterised in that described adhesive is sodium silicate, gathers
One or both in vinyl alcohol adhesive.
Dephosphorization filler X-Phos substrate the most according to claim 1, it is characterised in that described substrate is possibly together with MgO2, activity
One or more in charcoal or flyash.
Dephosphorization filler X-Phos substrate the most according to claim 1, it is characterised in that MgO2, activated carbon or flyash
Content is 1%.
9. the preparation method of the dephosphorization filler X-Phos substrate described in claim 1, it is characterised in that specifically include following step
Rapid:
1) CaO2Powder and attapulgite clay cross 200 eye mesh screens；
2) natural attapulgite clay is carried out 800 DEG C of high temperature modified process and prepare modified attapulgite clay；
3), under room temperature, each component is carried out in proportion mix and blend；
4) air-dry after the slurry being stirred is pressed into cylinder granule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610269334.8A CN105858787B (en) | 2016-04-27 | 2016-04-27 | A kind of dephosphorization filler X-Phos matrix and preparation method thereof |
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| CN201610269334.8A CN105858787B (en) | 2016-04-27 | 2016-04-27 | A kind of dephosphorization filler X-Phos matrix and preparation method thereof |
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| CN105858787B CN105858787B (en) | 2019-06-07 |
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| CN106277651A (en) * | 2016-10-09 | 2017-01-04 | 中国科学院南京地理与湖泊研究所 | Low stain water body profound purification system |
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| CN106946309A (en) * | 2017-04-27 | 2017-07-14 | 安徽大学 | A kind of oxygen sustained release, the preparation method and applications for inhaling phosphate material |
| CN111018097A (en) * | 2019-11-19 | 2020-04-17 | 上海琸源水生态环境工程有限公司 | Ceramsite filter material suitable for biological aerated filter and preparation method thereof |
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| CN111018097A (en) * | 2019-11-19 | 2020-04-17 | 上海琸源水生态环境工程有限公司 | Ceramsite filter material suitable for biological aerated filter and preparation method thereof |
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| CN105858787B (en) | 2019-06-07 |
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