CN110498470A - A kind of sewage treating material and preparation method thereof - Google Patents
A kind of sewage treating material and preparation method thereof Download PDFInfo
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- CN110498470A CN110498470A CN201910777233.5A CN201910777233A CN110498470A CN 110498470 A CN110498470 A CN 110498470A CN 201910777233 A CN201910777233 A CN 201910777233A CN 110498470 A CN110498470 A CN 110498470A
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- Prior art keywords
- sewage treating
- treating material
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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
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
-
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention provides a kind of sewage treating materials and preparation method thereof, belong to sewage treatment field.Sewage treating material of the invention is by including that the raw material of following parts by weight is prepared: 20~30 parts of macroreticular resin；Attapulgite modified 15~25 parts；5~10 parts of divalent iron salt；8~15 parts of zeolite；2~3 parts of dispersing agent.Macroreticular resin of the invention has good absorption property, cooperate attapulgite modified and zeolite, the absorption property of sewage treating material can be further increased, under the action of divalent iron salt, reduce the metal ion in sewage, the present invention combines physics with chemical method, realizes the efficient process of sewage.Embodiment the result shows that, sewage treating material provided by the invention is to the BOD removal rate of sewage 92.2% or more, COD removal rate, 91.1% or more, illustrates that sewage treating material of the invention can efficiently remove the pollutant in sewage in 94.9% or more SS removal rate.
Description
Technical field
The present invention relates to sewage treatment fields more particularly to a kind of sewage treating material and preparation method thereof.
Background technique
With the development of economy, sewage discharge is increasingly severe, directly the sustainable development of threat human health and society.
Therefore, sewage treatment has become the problem of global concern.
The method of existing sewage treatment can generally be summarized as physical method, chemical method and bioanalysis etc..
Physical method mainly utilizes the non-solubility substance in physical action separation sewage, does not change chemistry during processing
Property.There are commonly Gravity Separations, centrifuge separation, reverse osmosis, air bearing etc..Physical method processing structures are relatively simple, economical, are used for
The situation that villages and small towns water body capacity is big, self-purification capacity is strong, sewage treatment degree is of less demanding.
Chemical method is the method acted on using chemical reaction to handle or recycle the dissolution substance or colloidal substance of sewage, more
For industrial wastewater.There are commonly Coagulation Method, neutralisation, oxidation-reduction method, ion-exchanges etc..Method of chemical treatment treatment effect
It is good but costly, treatment effeciency is low, and be also easy to produce secondary pollution.
Bioanalysis is the metabolic function using microorganism, will be decomposed in sewage in the organic matter of dissolution or colloidal state
Stable inorganic substances are oxidized to, make to purify the sewage.Bioanalysis is often limited by season, is not suitable in cold winter
Operation.
To sum up, all there is certain limitation using single processing method at present, be difficult to realize the efficient process of sewage, because
This, develops wider processing method and processing material is of great significance.
Summary of the invention
The purpose of the present invention is to provide a kind of sewage treating materials and preparation method thereof, combine physics and chemical method
Sewage is handled, pollutant can be efficiently removed.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of sewage treating materials, are prepared by the raw material for including following parts by weight:
Preferably, the raw material further includes 8~13 parts of aluminum sulfate.
Preferably, it after the attapulgite modified preparation is the following steps are included: attapulgite is heat-treated, uses
Sulfuric acid is impregnated, and is obtained attapulgite modified.
Preferably, the temperature of the heat treatment is 700~800 DEG C, and the time of heat treatment is 20~40min.
Preferably, the divalent iron salt is frerrous chloride and/or ferrous sulfate.
Preferably, the macroreticular resin is D-101 type macroporous absorbent resin, DA-201 type macroporous absorbent resin or H-103
Type macroporous absorbent resin.
Preferably, the dispersing agent is one of polyacrylic acid, polyacrylamide and polyvinyl alcohol or a variety of.
The present invention provides the preparation methods of sewage treating material described in above scheme, comprising the following steps:
Each raw material is uniformly mixed, mixture is obtained；
The mixture is subjected to extruding pelletization, obtains sewage treating material.
Preferably, extruding pelletization, the temperature of extruding pelletization are as follows: 165 DEG C of an area, 2nd area are carried out using double screw extruder
180~200 DEG C, three 190~210 DEG C of areas, 200~220 DEG C of connected body, 200~220 DEG C of die head.
Preferably, described be blended in high-speed mixer carries out, and stirring rate is 1000~2000r/min.
The present invention provides a kind of sewage treating materials, are prepared by the raw material for including following parts by weight: macroreticular resin
20~30 parts；Attapulgite modified 15~25 parts；5~10 parts of divalent iron salt；8~15 parts of zeolite；2~3 parts of dispersing agent.The present invention
Macroreticular resin have good absorption property, cooperate attapulgite modified and zeolite, sewage treatment material can be further increased
The absorption property of material reduces the metal ion in sewage under the action of divalent iron salt, and the present invention is by physics and chemical method
Combine, realizes the efficient process of sewage.Embodiment the result shows that, sewage treating material provided by the invention is to sewage
BOD removal rate in 92.2% or more, COD removal rate 94.9% or more, suspended particulate substance (SS) removal rate 91.1% with
On, illustrate that sewage treating material of the invention can efficiently remove the pollutant in sewage.
The present invention further improves the wadding of sewage treating material by adding aluminum sulfate in above-mentioned sewage treating material
Solidifying effect, improves treatment effeciency.
The present invention provides the preparation methods of above-mentioned sewage treating material, and preparation is simple, are easy to realize industrial production.
Specific embodiment
The present invention provides a kind of sewage treating materials, are prepared by the raw material for including following parts by weight:
In the present invention, without specified otherwise, the raw material of use is commercial goods well known in the art.
The raw material for preparing of sewage treating material provided by the invention includes 20~30 parts of macroreticular resin, and preferably 22~28
Part.In the present invention, the macroreticular resin is preferably D-101 type macroporous absorbent resin, DA-201 type macroporous absorbent resin or H-
103 type macroporous absorbent resins.Macroreticular resin spatial network of the present invention is flourishing, has excellent absorption property.
On the basis of the parts by weight of macroreticular resin, the raw material for preparing of sewage treating material of the invention includes modified attapulgite
15~25 parts, preferably 18~23 parts of soil.
In the present invention, the attapulgite modified preparation preferably includes following steps: attapulgite is carried out hot place
It after reason, is impregnated, is obtained attapulgite modified using sulfuric acid.
In the present invention, the partial size of the attapulgite is preferably 200~300 mesh.In the present invention, the heat treatment
Temperature is preferably 400~500 DEG C, and more preferably 450 DEG C；The time of the heat treatment is preferably 20~40min, and more preferably 25
~35min.Impurity in attapulgite duct can be carbonized by heat treatment of the present invention, increase attapulgite Kong Rong and
Specific surface area.
After heat treatment, the present invention impregnates the attapulgite after heat treatment using sulfuric acid, obtains attapulgite modified.
Before being impregnated, the present invention is it is also preferable to include grinding the attapulgite after heat treatment, the partial size after grinding
Preferably 200~300 mesh.
When being impregnated using sulfuric acid, the concentration of the sulfuric acid is preferably 2~4mol/L, more preferably 2.5~3.5mol/
L；The time of the immersion is preferably 30~40min；The liquid-solid ratio of the sulfuric acid and attapulgite is preferably 20~30mL: 1g,
More preferably 25mL: 1g.The present invention preferably impregnates under agitation.The present invention is not special to the rate of the stirring
It is required that not causing liquid splash.The present invention is modified the attapulgite after heat treatment using sulfuric acid, the hydrogen in sulfuric acid
The cation in attapulgite is substituted in ion, and the precipitation of large radius cation causes microvoid in attapulgite to increase, compares table
Area increases, and makes attapulgite modified with stronger physical adsorption property.
After acid soak, the present invention it is also preferable to include the system after immersion is separated by solid-liquid separation, solid washing and dry.This
Invention does not have particular/special requirement to the mode of the separation of solid and liquid, arbitrarily can be realized the mode of separation of solid and liquid, such as filtering, from
Heart etc..The mode that the present invention washs the solid does not have particular/special requirement, using mode of washing well known in the art.At this
In invention, the temperature of the drying is preferably 80~100 DEG C, and the present invention does not have particular/special requirement to the time of the drying, is made recessed
The dry tack free of convex stick soil.
On the basis of the parts by weight of macroreticular resin, the raw material for preparing of sewage treating material of the invention includes divalent iron salt 5
~10 parts, preferably 6~8 parts.In the present invention, the divalent iron salt is preferably frerrous chloride and/or ferrous sulfate, more preferably
For ferrous sulfate.Divalent iron salt of the invention can go back the heavy metal ion in raw sewage, when selecting ferrous sulfate, also have
Certain flocculation.
On the basis of the parts by weight of macroreticular resin, the raw material for preparing of sewage treating material of the invention includes zeolite 8~15
Part, preferably 10~13 parts.In the present invention, the partial size of the zeolite is preferably 200~300 mesh.
On the basis of the parts by weight of macroreticular resin, the raw material for preparing of sewage treating material of the invention includes dispersing agent 2~3
Part, preferably 2.5 parts.In the present invention, the dispersing agent is preferably one in polyacrylic acid, polyacrylamide and polyvinyl alcohol
Kind is a variety of.
On the basis of the parts by weight of macroreticular resin, the raw material for preparing of sewage treating material of the invention further includes aluminum sulfate 8
~13 parts, preferably 9~12 parts.When preparing raw material further includes aluminum sulfate, the wadding of sewage treating material can be further increased
Solidifying effect, improves treatment effeciency.
The present invention provides the preparation methods of sewage treating material described in above scheme, comprising the following steps:
Each raw material is uniformly mixed, mixture is obtained；
The mixture is subjected to extruding pelletization, obtains sewage treating material.
Each raw material is uniformly mixed by the present invention, obtains mixture.The present invention mixes each raw material preferably in high-speed mixer
It closes uniform.In the present invention, the stirring rate of the high-speed mixer is preferably 1000~2000r/min, and more preferably 1300
~1800r/min.Preferably high-speed mixer is added in macroreticular resin, zeolite and divalent iron salt by the present invention, stirs 5~10min, so
After attapulgite modified and dispersing agent be added continue 5~10min of stirring, obtain mixture.It further include aluminum sulfate when preparing raw material
When, preferably high-speed mixer is added in macroreticular resin, zeolite, divalent iron salt and aluminum sulfate by the present invention, stirs 5~10min, then
Attapulgite modified and dispersing agent is added and continues 5~10min of stirring, obtains mixture.
After obtaining mixture, the mixture is carried out extruding pelletization by the present invention, obtains sewage treating material.
Present invention preferably employs double screw extruders to carry out extruding pelletization, and the temperature of extruding pelletization is preferred are as follows: an area 165
DEG C, two 180~200 DEG C of areas, three 190~210 DEG C of areas, 200~220 DEG C of connected body, 200~220 DEG C of die head, more preferably an area
165 DEG C, two 190 DEG C of areas, three 200 DEG C of areas, 210 DEG C of connected body, 220 DEG C of die head.In the present invention, the sewage treating material obtained
Partial size be preferably 100~200 mesh.
Sewage treating material provided by the invention and preparation method thereof is described in detail below with reference to embodiment, but
It is that they cannot be interpreted as limiting the scope of the present invention.
It is attapulgite modified used in Examples 1 to 4 respectively to be obtained using following steps system:
Attapulgite is calcined into 30min in 450 DEG C of Muffle furnace, after being cooled to room temperature, be ground to partial size be 200~
300 mesh, the attapulgite after being heat-treated；
It is 25mL: 1g according to the liquid-solid ratio of sulfuric acid and attapulgite, the attapulgite after the heat treatment is dipped into dense
Degree is in the sulfuric acid of 3mol/L, and 30min is impregnated in stirring, is obtained after being filtered, washed and dried drying attapulgite modified.
Embodiment 1
In parts by weight, 20 parts of D-101 type macroporous absorbent resins, 6 parts of ferrous sulfate, 9 parts of zeolites are added to stirring speed
Rate is to stir 10min in the high-speed mixer of 1200r/min, and 20 parts of attapulgite modified and 2 parts of polyacrylic acid are then added,
Continue to stir 10min, obtains mixture；
The mixture is carried out by extruding pelletization, extrusion temperature using double screw extruder are as follows:
Obtain the sewage treating material that partial size is 200 mesh.
Embodiment 2
In parts by weight, 25 parts of DA-201 type macroporous absorbent resins, 8 parts of ferrous sulfate, 13 parts of zeolites are added to stirring
Rate is to stir 8min in the high-speed mixer of 1500r/min, and 22 parts of attapulgite modified and 2.5 parts of polypropylene are then added
Amide continues to stir 10min, obtains mixture；
The mixture is carried out by extruding pelletization, extrusion temperature using double screw extruder are as follows:
Obtain the sewage treating material that partial size is 200 mesh.
Embodiment 3
In parts by weight, 30 parts of H-103 type macroporous absorbent resins, 10 parts of frerrous chlorides, 15 parts of zeolites are added to stirring
Rate is to stir 8min in the high-speed mixer of 2000r/min, and 25 parts of attapulgite modified and 3 parts of polyvinyl alcohol are then added,
Continue to stir 8min, obtains mixture；
The mixture is carried out by extruding pelletization, extrusion temperature using double screw extruder are as follows:
Obtain the sewage treating material that partial size is 200 mesh.
Embodiment 4
In parts by weight, 28 parts of H-103 type macroporous absorbent resins, 5 parts of ferrous sulfate, 11 parts of zeolites are added to stirring speed
Rate is to stir 5min in the high-speed mixer of 2000r/min, and 16 parts of attapulgite modified and 2.5 parts of polyacrylamides are then added
Amine continues to stir 10min, obtains mixture；
The mixture is carried out by extruding pelletization, extrusion temperature using double screw extruder are as follows:
Obtain the sewage treating material that partial size is 200 mesh.
Comparative example 1
Difference from example 1 is that attapulgite is not modified, remaining step is identical.
Comparative example 2
Difference from example 1 is that divalent iron salt is not used, remaining step is identical.
The sewage treating material that Examples 1 to 4 and comparative example 1~2 are obtained handles same sewage, sewage treating material
Input amount is 200mg/L, and after standing 40min, the test result obtained is as shown in table 1.
1 embodiment of table and comparative example sewage treatment result
As shown in Table 1, sewage treating material prepared by the present invention BOD removal rate with higher, COD removal rate
And suspended particulate substance (SS) removal rate；And the sewage treating material (comparative example 1) relatively obtained using unmodified attapulgite
For, turbidity removal water purification performance is more preferable；For relatively carrying out sewage treatment (comparative example 2) using physical method merely, turbidity removal water purification
It can be also more preferable.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of sewage treating material, which is characterized in that be prepared by the raw material for including following parts by weight:
2. sewage treating material according to claim 1, which is characterized in that the raw material further includes 8~13 parts of aluminum sulfate.
3. sewage treating material according to claim 1 or 2, which is characterized in that the attapulgite modified preparation packet
It includes following steps: after attapulgite is heat-treated, being impregnated using sulfuric acid, obtained attapulgite modified.
4. sewage treating material according to claim 3, which is characterized in that the temperature of the heat treatment is 700~800
DEG C, the time of heat treatment is 20~40min.
5. sewage treating material according to claim 1, which is characterized in that the divalent iron salt be frerrous chloride and/or
Ferrous sulfate.
6. sewage treating material according to claim 1, which is characterized in that the macroreticular resin is the suction of D-101 type macropore
Attached resin, DA-201 type macroporous absorbent resin or H-103 type macroporous absorbent resin.
7. sewage treating material according to claim 1, which is characterized in that the dispersing agent is polyacrylic acid, polypropylene
One of amide and polyvinyl alcohol are a variety of.
8. the preparation method of any one of claim 1~7 sewage treating material, comprising the following steps:
Each raw material is uniformly mixed, mixture is obtained；
The mixture is subjected to extruding pelletization, obtains sewage treating material.
9. preparation method according to claim 8, which is characterized in that carry out extruding pelletization using double screw extruder, squeeze
The temperature being granulated out are as follows: 165 DEG C of an area, two 180~200 DEG C of areas, three 190~210 DEG C of areas, 200~220 DEG C of connected body, die head
200~220 DEG C.
10. preparation method according to claim 8, which is characterized in that described be blended in high-speed mixer carries out, stirring
Rate is 1000~2000r/min.
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