CN108314280A - A kind of sludge curing agent and preparation method thereof - Google Patents
A kind of sludge curing agent and preparation method thereof Download PDFInfo
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- CN108314280A CN108314280A CN201810032048.9A CN201810032048A CN108314280A CN 108314280 A CN108314280 A CN 108314280A CN 201810032048 A CN201810032048 A CN 201810032048A CN 108314280 A CN108314280 A CN 108314280A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/08—Diatomaceous earth
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/149—Iron-sulfates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to sludge treatment fields, and in particular to a kind of sludge curing agent and preparation method thereof.Sludge curing agent provided by the invention is mainly made of magnesia, modification infusorial earth, the wooden ceramics, bodied ferric sulfate, Tea Saponin, vanillic aldehyde and sodium metasilicate.The sludge curing agent that the present invention is prepared has the advantages that easy to operate, dehydrating effect is good, removal microorganism and heavy metal effect are good, also there is the water quality for improving mud filtrate simultaneously, the advantages of reducing environmental pollution, it is a kind of sludge curing agent at low cost, environmentally friendly, is conducive to large-scale promotion and application.
Description
Technical field
The invention belongs to sludge treatment fields, and in particular to a kind of sludge curing agent and preparation method thereof.
Background technology
The method processing that the dredging silt generally use generated in dredging work is stacked or abandoned, does not on the one hand only take up big
The soil of amount, causes the waste of large amount of land resources, and is thrown off-lying sea, can seriously affect efficiently using for marine resources,
Irremediable destruction will be caused to marine environment；On the other hand, dredging silt contains the pollutions such as heavy metal, organic matter mostly
Object will necessarily cause secondary pollution to surrounding enviroment.Currently, the discarded influence to environment of dredging silt increasingly causes each side
The attention in face has become the conditionality factor that China's great rivers are administered and ocean engineering develops.Dredging silt is consolidated
Change and recycling treatment, not only contribute to river training lake etc., prevent Water Eutrophication and purifying city environment, and is right
Mud comprehensive development and utilization, turns harm into good, and forms an extremely promising new industry at home, has important work
With.
Curing technology is that curing materials are added into mud, mixes by stirring, conserves, make mud, water, curing materials it
Between a series of hydrolysis and hydration reaction occurs, sludge granules surface generate gum material, so that sludge granules is had certain
Water stability and strength stability.In addition, the hydrated product with gelling property forms reticular structure between sludge granules,
Skeleton is constituted, the hydrated product of crystal class then fills the hole of reticular structure, and rear mud to be hardened just has certain
Structural strength.Obviously, chemosetting processing can not only increase the grain size of sludge granules, can also pass through the aquation of curing materials
Effect is effectively reduced the moisture content of mud.In addition, wherein dirt can be effectively reduced by being wrapped in the condensation hardening shell of sludge granules
The activity for contaminating substance, to play the role of it is certain subtract it is dirty.
Patent document CN103288391B discloses a kind of purely inorganic sludge curing agent, the purely inorganic sludge curing agent by
Cement, palygorskite and sericite composition.The incorporation of the purely inorganic sludge curing agent when in use is mud quality
10%~20%.The sludge curing agent being prepared can effectively improve the optimum moisture content of mud, when mud reaches identical strong
The required moisture excluded in mud is less when spending；Palygorskite and sericite can play its stronger soaking effect, in addition, layer
The interaction of shape silicate mineral and the characteristic for playing clay mineral, promote curing sludge have compared with antiscour and freeze thawing resistance
Performance, the mud after solidification can be used for road filler, reduce road construction cost, also help environmental protection.
Patent document CN100562501C discloses a kind of sludge curing agent and its application, and told sludge curing agent is by pulvis
It is formed with liquor, the pulvis includes clinker, clinker or slag, lime, gypsum, other sulfate；The liquor includes
Polyacrylamide, aluminium polychloride, mannitol, lignosulfonates, lignosulfonates and iron, chromium ion complex compound, alkyl
Phenol polyethenoxy ether, tannin, humate, alpha-alkene sulfonate.Each component used by the sludge curing agent is commercially available quotient
Product or the industrial emissions being easy to get, cost of manufacture is relatively low, and addition content when being carried out at the same time silt consolidation processing is few, induration
Intensity is high, water resistance is good.The curing process of dredging mud, the reinforcing of road base layer soil and water bottom can be widely used in
The antiseepage drain process of mud layer.
However, current sludge curing agent lays particular emphasis on the research in terms of the dehydration property to mud, compression strength and water resistance,
Mud heavy metal, microorganism and viral level after solidification is more, limits the use scope of the mud after solidification.
Invention content
In order to solve defect existing for sludge curing agent in the prior art.It is solid that the purpose of the present invention is to provide a kind of mud
Agent and preparation method thereof, sludge curing agent provided by the invention has stronger dehydration property, while can effectively adsorb silt
Microorganism, virus and heavy metal in mud, allow the mud after solidification to reuse, and can also improve the water of mud filtrate
Matter reduces the pollution of environment.
The present invention provides a kind of sludge curing agents, including following component and its parts by weight：
30~40 parts of magnesia, 18~28 parts of modification infusorial earth, 8~12 parts of wood ceramics, 12~20 parts of bodied ferric sulfate, tea
8~10 parts of 8~16 parts of saponin, 6~8 parts of vanillic aldehyde and sodium metasilicate.
Further, including following component and its parts by weight：
36 parts of magnesia, 22 parts of modification infusorial earth, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 14 parts of Tea Saponin, vanillic aldehyde
7 parts and 9 parts of sodium metasilicate.
Further, the preparation method of the modification infusorial earth is：
A. diatomite is dried, crosses 80~100 mesh sieve, obtains fine powder, be subsequently added into the hydrochloric acid that volumetric concentration is 5~10%
In, 100~110 DEG C of 2~4h of reaction are heated to, cooling is washed with water to neutrality, dry, obtains acid diatomite powder；
B. nano zine oxide is added into the acid diatomite powder that step a is obtained to be uniformly mixed, obtains mixture I；
C. by modifying agent stirring soluble in water to being completely dissolved, the mixture I stirrings that step b is obtained are subsequently added into, it is described
Modifying agent is xylitol, arabinose, fructose, galactolipin or mannose, forms uniform colloidal, dry, grinding to get.
Further, the solid-to-liquid ratio of the fine powder in the step a and hydrochloric acid is 1g:(2~3) mL.
Further, the weight ratio of the acid diatomite powder in the step b and nano zine oxide is 1:(0.5~
0.6)。
Further, the weight ratio of the modifying agent in the step c and mixture I are (6~8):1.
Further, the preparation method of the wood ceramics is：
A dries wood powder to moisture content<20%, by 80~100 mesh dusting covers after attrition grinding, obtain thin wood powder；
B weighs 60~80 parts of liquid epoxy acrylic resin, 2~4 parts of low temperature pyrogenation carbon, Sn powder 5~10 in parts by weight
Part stirs evenly, and obtains mixed liquor；
The mixed liquor that C obtains the thin wood powder that step A is obtained with step B is by weight 1:1 is uniformly mixed, in normal temperature and pressure
40~60h of lower dipping, drying are put into the heating furnace of inert gas shielding and preheat, are gradually warming up to 700~800 DEG C, and decompression is taken out
Go out after low-molecular-weight component it is further heated up to 1000~1500 DEG C, after 3~4h of vacuum carbonized, it is cooling to get.The low temperature pyrogenation
Carbon (low temperature isotrophic carbon, LTIC) is a kind of biomaterial.
Further, liquid epoxy acrylic resin is liquid epoxy third that solid content is 40~50% in the step B
Olefin(e) acid resin.
In addition, the present invention also provides the preparation method of the sludge curing agent, include the following steps：
First magnesia, modification infusorial earth, wood ceramics, bodied ferric sulfate and vanillic aldehyde are stirred evenly, are subsequently added into tea soap
Element and sodium metasilicate, stir evenly, it is dry to get.
Sludge curing agent provided by the invention can efficiently remove various microorganisms and organic and inorganic in mud
The floccule of grain composition, malicious harmful substance and heavy metal ion, the elements such as nitrogen, phosphorus, while it can also improve mud filtrate
Water quality reduces the pollution of environment, is a kind of ideal sludge curing agent.
Diatomaceous real density is larger, while having preferable flocculating property again, but it inhales the mud of complicated component
Attached effect is not apparent enough.The present invention by Activity of Nanosized Zinc Peroxide and containing great amount of hydroxy group modifying agent load modification is made over celite
Diatomite can effectively adsorb larger molecular organics and degradation of organic substances difficult to degrade in mud.In modification infusorial earth
Activity of Nanosized Zinc Peroxide can be reacted with catalytic modification agent with the organic matter difficult to degrade in mud, improve modification infusorial earth to difficult to degrade
The adsorption effect of larger molecular organics.Meanwhile Activity of Nanosized Zinc Peroxide can degrade and be adsorbed on the difficult to degrade big of modification infusorial earth
Molecular organic can further improve clean-up effect, reach difficult to degrade big in can adsorbing and degrading substantially mud
The effect of molecular organic.
Wood ceramics provided by the invention are to be modified low temperature pyrogenation carbon and Sn powder, can effectively improve the wooden ceramics
Superconductivity, and the wooden ceramics with superconductivity can effectively remove the harmful microorganisms such as bacterium and virus in mud.It is former
Because being that the modified wooden ceramic energy effectively adsorbs bacterium or virus in mud, innovation wood ceramics and the bacterium adsorbed or disease
Strong reciprocation occurs for the central area that the negative electrical charge of the cell membrane of poison is concentrated, and the change of its state-of-charge, electric power can be caused to transmit
It loses, the modified wooden ceramics can receive the electronics of cell membrane release, and be conducted, and conformation change is caused, so as to cause
The death of the microorganisms such as bacterium or virus, to achieve the effect that removing.
Bodied ferric sulfate (PFS) provided by the invention is a kind of novel inorganic polymer flocculant.But with tradition
Metal salt flocculating agent compare, cohesion-flocculating effect is poor, and flocculation bridge formation ability is relatively low, and it meets the water capacity in mud
Facile hydrolysis, unstable, the further flocculating effect for reducing bodied ferric sulfate.Tea soap in sludge curing agent provided by the invention
Element and vanillic aldehyde, which are used in combination, can solve the problems, such as bodied ferric sulfate further hydrolytically unstable in water, can greatly carry
The flocculating effect of high composite flocculation agent.
Further, it is found through experiment that, sludge curing agent provided by the invention improves after solidification the dehydration rate of mud and anti-
Compressive Strength, while turbidity, absorbance, solid suspension content and the grain size of mud filtrate can also be substantially reduced, it can be effective
Improvement mud filtrate water quality, reduce environmental pollution, achieve the effect that environmental protection.
Compared with prior art, sludge curing agent provided by the invention has the advantage that：
(1) sludge curing agent provided by the invention is with easy to operate, dehydrating effect is good, removal microorganism and heavy metal are imitated
The good advantage of fruit all has preferable solidification effect in the range of pH value is 3~12；
(2) sludge curing agent provided by the invention can also improve the water quality of mud filtrate, reduce the pollution of environment, be one
At low cost, the environmentally friendly sludge curing agent of kind, is conducive to large-scale promotion and application.
Specific implementation mode：
The following describes the present invention further through the description of specific embodiments, but this is not the limit to the present invention
System, those skilled in the art's basic thought according to the present invention can make various modifications or improvements, but without departing from this
The basic thought of invention, is all within the scope of the present invention.
The preparation of embodiment 1, modification infusorial earth
A. diatomite is dried, is sieved with 100 mesh sieve, obtain fine powder, be subsequently added into the hydrochloric acid that volumetric concentration is 8%, it is described thin
The solid-to-liquid ratio of powder and hydrochloric acid is 1g:2mL is heated to 110 DEG C of reaction 3h, and cooling is washed with water to neutrality, dry, obtains acid silicon
Diatomaceous earth powder；
B. nano zine oxide is added into the acid diatomite powder that step a is obtained to be uniformly mixed, the acidity diatomite
The weight ratio of powder and nano zine oxide is 1:0.5, obtain mixture I；
C. by xylitol stirring soluble in water to being completely dissolved, the mixture I stirrings that step b is obtained are subsequently added into, it is described
The weight ratio of xylitol and mixture I are 6:1, form uniform colloidal, it is dry, grinding to get.
The preparation of embodiment 2, modification infusorial earth
Diatomite is dried, is sieved with 100 mesh sieve, fine powder is obtained, is subsequently added into the hydrochloric acid that volumetric concentration is 8%, the fine powder
Solid-to-liquid ratio with hydrochloric acid is 1g:3mL is heated to 110 DEG C of reaction 3h, and cooling is washed with water to neutrality, dry, obtains acid diatom
Native powder；
B. nano zine oxide is added into the acid diatomite powder that step a is obtained to be uniformly mixed, the acidity diatomite
The weight ratio of powder and nano zine oxide is 1:0.6, obtain mixture I；
C. by mannose stirring soluble in water to being completely dissolved, the mixture I stirrings that step b is obtained are subsequently added into, it is described
The weight ratio of mannose and mixture I are 8:1, form uniform colloidal, it is dry, grinding to get.
The preparation of embodiment 3, wood ceramics
A dries wood powder to moisture content<20%, by 100 mesh dusting covers after attrition grinding, obtain thin wood powder；
B weighs 70 parts of the liquid epoxy acrylic resin that solid content is 45%, 3 parts of low temperature pyrogenation carbon, Sn in parts by weight
8 parts of powder stirs evenly, and obtains mixed liquor；
The mixed liquor that C obtains the thin wood powder that step A is obtained with step B is by weight 1:1 is uniformly mixed, in normal temperature and pressure
Lower dipping 50h, drying are put into the heating furnace of inert gas shielding and preheat, are gradually warming up to 800 DEG C, decompression extraction low molecule
It is further heated up to 1200 DEG C after component, after vacuum carbonized 4h, it is cooling to get.
Embodiment 4, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
30 parts of magnesia, 18 parts of modification infusorial earth, 8 parts of wood ceramics, 12 parts of bodied ferric sulfate, 8 parts of Tea Saponin, vanillic aldehyde 6
8 parts of part and sodium metasilicate；The modification infusorial earth is modification infusorial earth made from embodiment 1, and the wood ceramics are that embodiment 3 is made
Wood ceramics.
Preparation method：
Above-mentioned magnesia, modification infusorial earth, wood ceramics, bodied ferric sulfate and vanillic aldehyde are stirred evenly, tea is subsequently added into
Saponin and sodium metasilicate, stir evenly, it is dry to get.
Embodiment 5, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
36 parts of magnesia, 22 parts of modification infusorial earth, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 14 parts of Tea Saponin, vanillic aldehyde
7 parts and 9 parts of sodium metasilicate；The modification infusorial earth is modification infusorial earth made from embodiment 1, and the wood ceramics are that embodiment 3 is made
The wood ceramics obtained.
Preparation method is similar to Example 4.
Embodiment 6, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
40 parts of magnesia, 28 parts of modification infusorial earth, 12 parts of wood ceramics, 20 parts of bodied ferric sulfate, 16 parts of Tea Saponin, vanillic aldehyde
8 parts and 10 parts of sodium metasilicate；The modification infusorial earth is modification infusorial earth made from embodiment 1, and the wood ceramics are that embodiment 3 is made
The wood ceramics obtained.
Preparation method is similar to Example 4.
Comparative example 1, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
36 parts of magnesia, 22 parts of diatomite, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 14 parts of Tea Saponin, 7 parts of vanillic aldehyde
With 9 parts of sodium metasilicate；The modification infusorial earth is modification infusorial earth made from embodiment 1, and the wood ceramics are made from embodiment 3
The wooden ceramics.
Preparation method is similar to Example 4.
With embodiment 5 difference lies in：The diatomite is commercial product.
Comparative example 2, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
36 parts of magnesia, 22 parts of modification infusorial earth, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 14 parts of Tea Saponin, vanillic aldehyde
7 parts and 9 parts of sodium metasilicate；The wood ceramics are wood ceramics made from embodiment 3；
The preparation method of the modification infusorial earth is：
A. diatomite is dried, is sieved with 100 mesh sieve, obtain fine powder, be subsequently added into the hydrochloric acid that volumetric concentration is 8%, it is described thin
The solid-to-liquid ratio of powder and hydrochloric acid is 1g:2mL is heated to 110 DEG C of reaction 3h, and cooling is washed with water to neutrality, dry, obtains acid silicon
Diatomaceous earth powder；
B. nano zine oxide is added into the acid diatomite powder that step a is obtained to be uniformly mixed, water is added to form colloidal,
The weight ratio of the acidity diatomite powder and nano zine oxide is 1:0.5, it is dry, grinding to get.
Preparation method is similar to Example 4.
Comparative example 3, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
36 parts of magnesia, 22 parts of modification infusorial earth, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 14 parts of Tea Saponin, vanillic aldehyde
7 parts and 9 parts of sodium metasilicate；The modification infusorial earth is modification infusorial earth made from embodiment 1；
It is described wood ceramics preparation method be：
A dries wood powder to moisture content<20%, by 100 mesh dusting covers after attrition grinding, obtain thin wood powder；
B will take the liquid epoxy acrylic resin that solid content is 45% that the thin wood powder that step A is obtained is added and be uniformly mixed, institute
The weight ratio for stating liquid epoxy acrylic resin and thin wood powder is 1:1,50h is impregnated at normal temperatures and pressures, is dried, is put into indifferent gas
It preheated in the heating furnace of body protection, be gradually warming up to 800 DEG C, depressurized after extracting low-molecular-weight component out it is further heated up to 1200 DEG C,
After vacuum carbonized 4h, it is cooling to get.
Preparation method is similar to Example 4.
Comparative example 4, a kind of sludge curing agent
The sludge curing agent is made of following component and its parts by weight：
36 parts of magnesia, 22 parts of modification infusorial earth, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 21 parts of Tea Saponin and silicic acid
9 parts of sodium；The modification infusorial earth is modification infusorial earth made from embodiment 1, and the wood ceramics are wood pottery made from embodiment 3
Porcelain.
Preparation method is similar to Example 4.
With embodiment 5 difference lies in：Vanillic aldehyde is not added, the content of Tea Saponin is increased.
The measurement experiment of the performance of mud after test example one, solidification
1, test material：
The silt that embodiment 4, embodiment 5, embodiment 6, comparative example 1, comparative example 2, comparative example 3 and comparative example 4 are prepared
Mud curing agent.
2, test method：
Guangzhou is taken to pollute more serious river surge silt as detection sample, the sludge curing agent and detection sample
Weight ratio is 1:3, it measures and is made through embodiment 4, embodiment 5, embodiment 6, comparative example 1, comparative example 2, comparative example 3 and comparative example 4
The moisture content and compression strength of mud after standby obtained sludge curing agent solidification.
2.1, the measurement of moisture content：It will be through embodiment 4, embodiment 5, embodiment 6, comparative example 1, comparative example 2, comparative example 3
Mud after the sludge curing agent solidification being prepared with comparative example 4, which is placed in the culture dish for be lined with filter paper, weighs, and at 105 DEG C
Constant temperature drying is weighed to constant weight after taking out cooling in baking oven, calculates the moisture content of mud after solidification.Wherein, mud contains after solidification
The calculation formula of water rate is：A=(W1+W2-W3)/(W2-W4Mud moisture content after) × 100%, a- solidifications, %；W1Culture dish matter
Amount, g；W2The quality of mud and filter paper, g after solidification；W3The quality of curing sludge, filter paper and culture dish after being dried after -105 DEG C,
g；W4The quality of filter paper, g.
2.2, the measurement of compression strength：The assay method with reference to specified in CJ/T3073-1998 is measured through embodiment 4, in fact
Apply the silt after the sludge curing agent solidification that example 5, embodiment 6, comparative example 1, comparative example 2, comparative example 3 and comparative example 4 are prepared
The compression strength of mud.
3, test result
Test result is as shown in table 1.
The measurement experiment of the performance of mud after table 1 cures
As shown in Table 1, the mud moisture content after sludge curing agent solidification is prepared in the embodiment of the present invention 4~6 is less than
21%, compression strength is more than 4.69MPa.And the mud moisture content that example 1~4 is prepared after sludge curing agent solidification by contrast is big
In 34%, compression strength is less than 3.05MPa, illustrates that the dehydrating effect of sludge curing agent provided by the invention is good, each component collaboration
Play the compression strength of mud after enhancing cures.
The content of beary metal of mud measures experiment after test example two, solidification
1, test material：
The silt that embodiment 4, embodiment 5, embodiment 6, comparative example 1, comparative example 2, comparative example 3 and comparative example 4 are prepared
Mud curing agent.
2, test method：
Guangzhou is taken to pollute more serious river surge silt as detection sample, with reference to country《Standard of soil environment quality》
(GB15618-1995) regulation is to through embodiment 4, embodiment 5, embodiment 6, comparative example 1, comparative example 2, comparative example 3 and comparison
Mercury, arsenic, chromium, copper, lead, cadmium, zinc and nickel content are detected in mud after the sludge curing agent solidification that example 4 is prepared, institute
It is 1 that sludge curing agent, which is stated, with the weight ratio for detecting sample:3, as a control group with the detection sample of no added sludge curing agent.
3, test result：
Test result is as shown in table 2.
The content of beary metal of mud measures experiment after table 2 cures
As shown in Table 2, the heavy metal of the mud after the sludge curing agent solidification being prepared through the embodiment of the present invention 4~6
Content meets country《Standard of soil environment quality》The regulation (Group III) of (GB 15618-1995), and by contrast prepared by example 1~4
The content of beary metal of mud after obtained sludge curing agent solidification has different degrees of exceeded, illustrates silt provided by the invention
Each ingredient interaction of mud curing agent can effectively improve the removal rate of mud content of beary metal, be more advantageous to follow-up mud
Recycling treatment.
The filtrate of mud measures experiment after test example three, solidification
1, test material：
Collect the mud filtrate after the solidification of the sludge curing agent of embodiment 4, embodiment 5, embodiment 6.
2, test method：
Guangzhou is taken to pollute more serious river surge silt as detection sample, the sludge curing agent and detection sample
Weight ratio is 1:3, embodiment of learning from else's experience 4, embodiment 5, embodiment 6 sludge curing agent solidification after mud filtrate, measure filtrate
Turbidity, absorbance, solid suspension content and grain size.Wherein, the turbidity of filtrate is measured using WGZ-3 transmissometers；Filter
The absorbance of liquid is measured using 723G spectrophotometers；The solid suspension content of filtrate is measured with reference to GB11901-89's
Assay method is measured；Filtrate grain size is measured using granularity counter.
3, test result：
Test result is as shown in table 3.
Filtrate after 3 sludge dewatering of table measures experiment
As shown in Table 3, the mud filtrate after the sludge curing agent solidification being prepared through the embodiment of the present invention 4~6 can be with
Turbidity, absorbance, solid suspension content and the filtrate grain size of mud filtrate are greatly reduced, wherein embodiment 5 is best real
Apply example.Illustrate that sludge curing agent provided by the invention can effectively improve the water quality of mud filtrate, reduces environmental pollution, be one
At low cost, the environmentally friendly sludge curing agent of kind, is conducive to large-scale promotion and application.
Claims (9)
1. a kind of sludge curing agent, which is characterized in that including following component and its parts by weight：
30~40 parts of magnesia, 18~28 parts of modification infusorial earth, 8~12 parts of wood ceramics, 12~20 parts of bodied ferric sulfate, Tea Saponin
8~10 parts of 8~16 parts, 6~8 parts of vanillic aldehyde and sodium metasilicate.
2. sludge curing agent as described in claim 1, which is characterized in that including following component and its parts by weight：
36 parts of magnesia, 22 parts of modification infusorial earth, 10 parts of wood ceramics, 15 parts of bodied ferric sulfate, 14 parts of Tea Saponin, 7 parts of vanillic aldehyde
With 9 parts of sodium metasilicate.
3. sludge curing agent as claimed in claim 1 or 2, which is characterized in that the preparation method of the modification infusorial earth is：
A. diatomite is dried, crosses 80~100 mesh sieve, obtains fine powder, be subsequently added into the hydrochloric acid that volumetric concentration is 5~10%, add
For heat to 100~110 DEG C of 2~4h of reaction, cooling is washed with water to neutrality, dry, obtains acid diatomite powder；
B. nano zine oxide is added into the acid diatomite powder that step a is obtained to be uniformly mixed, obtains mixture I；
C. by modifying agent stirring soluble in water to being completely dissolved, the mixture I stirrings that step b is obtained, the modification are subsequently added into
Agent is xylitol, arabinose, fructose, galactolipin or mannose, forms uniform colloidal, dry, grinding to get.
4. sludge curing agent as claimed in claim 3, which is characterized in that the solid-to-liquid ratio of fine powder and hydrochloric acid in the step a
For 1g:(2~3) mL.
5. sludge curing agent as claimed in claim 3, which is characterized in that acid diatomite powder in the step b with receive
The weight ratio of rice zinc oxide is 1:(0.5~0.6).
6. sludge curing agent as claimed in claim 3, which is characterized in that the weight of modifying agent and mixture I in the step c
Amount is than being (6~8):1.
7. sludge curing agent as claimed in claim 1 or 2, which is characterized in that it is described wood ceramics preparation method be：
A dries wood powder to moisture content<20%, by 80~100 mesh dusting covers after attrition grinding, obtain thin wood powder；
B weighs 60~80 parts of liquid epoxy acrylic resin, 2~4 parts of low temperature pyrogenation carbon in parts by weight, and 5~10 parts of Sn powder stirs
It mixes uniformly, obtains mixed liquor；
The mixed liquor that C obtains the thin wood powder that step A is obtained with step B is by weight 1:1 is uniformly mixed, and soaks at normal temperatures and pressures
40~60h of stain, drying are put into the heating furnace of inert gas shielding and preheat, are gradually warming up to 700~800 DEG C, and decompression extraction is low
It is further heated up to 1000~1500 DEG C after molecular components, after 3~4h of vacuum carbonized, it is cooling to get.
8. sludge curing agent as claimed in claim 7, which is characterized in that liquid epoxy acrylic resin is in the step B
The liquid epoxy acrylic resin that solid content is 40~50%.
9. the preparation method of the sludge curing agent as described in claim 1~8 is any, which is characterized in that include the following steps：
First magnesia, modification infusorial earth, wood ceramics, bodied ferric sulfate and vanillic aldehyde are stirred evenly, be subsequently added into Tea Saponin and
Sodium metasilicate stirs evenly, it is dry to get.
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| CN109279813A (en) * | 2018-11-13 | 2019-01-29 | 湖北恒沁环保科技有限责任公司 | Sludge curing agent and its preparation method and application |
| CN109384444A (en) * | 2018-11-13 | 2019-02-26 | 湖北恒沁环保科技有限责任公司 | A kind of subgrade material and preparation method thereof with sludge solidification preparation |
| CN114436598A (en) * | 2022-03-07 | 2022-05-06 | 湖南先锋防水科技有限公司 | High-performance environment-friendly concrete and preparation method thereof |
| CN115710113A (en) * | 2022-11-03 | 2023-02-24 | 深圳宏垚环保科技有限公司 | Method for mixing premixed solidified soil recovered from screening tailings |
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| CN114436598A (en) * | 2022-03-07 | 2022-05-06 | 湖南先锋防水科技有限公司 | High-performance environment-friendly concrete and preparation method thereof |
| CN115710113A (en) * | 2022-11-03 | 2023-02-24 | 深圳宏垚环保科技有限公司 | Method for mixing premixed solidified soil recovered from screening tailings |
| CN115710113B (en) * | 2022-11-03 | 2023-09-26 | 深圳宏垚环保科技有限公司 | Method for recycling sieving tailings and mixing premixed solidified soil |
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