CN110092555A - A kind of pollution waste sludge solidification and stabilization processing method, product and application - Google Patents
A kind of pollution waste sludge solidification and stabilization processing method, product and application Download PDFInfo
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- CN110092555A CN110092555A CN201910435175.8A CN201910435175A CN110092555A CN 110092555 A CN110092555 A CN 110092555A CN 201910435175 A CN201910435175 A CN 201910435175A CN 110092555 A CN110092555 A CN 110092555A
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- waste sludge
- pollution waste
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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
- 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
- C02F11/02—Biological treatment
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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
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The present invention provides a kind of pollution waste sludge solidification and stabilization processing method, and the method at least includes the following steps: prepare curing agent: into waterworks tail mud, addition includes the composite material of clay material and cellulose, obtains curing agent；Curing process: the curing agent is mixed with pollution waste sludge to be processed, adjusts pH value, solidification.It has stronger suction-operated to heavy metal ion and organic matter to the present invention, may advantageously facilitate the fixing-stable of pollution waste sludge.Fixing-stableization treated sludge is used for the construction and reparation of slope greening, pollution waste sludge after solidification and stabilization, with good water retention property, carrier is provided for slope greening plant growth, pollutant in absorption mixing sludge is further fixed using plant simultaneously again, the recycling of waste resource is realized, ensures that it recycles conversion in nature, development to pollution waste sludge processing disposal technology, has very strong guiding function.
Description
Technical field
The present invention relates to Treatment of Sludge and the field of utilizing, more particularly to a kind of pollution waste sludge solidification and stabilization processing side
Method, product and application.
Background technique
For sewage plant sludge as municipal sewage treatment by-product, it has unique property, such as moisture content height, organic matter
Content is high, while also containing poisonous and harmful substances such as a large amount of pathogen and heavy metals.The property of municipal sludge it is complicated and
It is highly unstable, it is extremely easy corruption, and give out penetrating odor, if directly stacked to it, it is micro- cause of disease to be become
The existence place of the harmful bacterias such as biology, causes secondary pollution to environment.Therefore, the disposition of municipal sludge gradually at
For one of urgent problem in Development of Urbanization.
In aquatic ecosystem, Sediments are the important accumulation libraries of heavy metal, are obtained by the pollution that the external world generates
After effective control, the biology or physical agent the effects of under the deposit release that promotes, it is possible to cause water body suitable
Pollutional condition is in long period.Sediment Dredging can permanently be removed from lake body by polluted bed mud, thus by more application
In lake treatment, such as Sediment Dredging engineering has been carried out in Dian Chi, Chaohu, West Lake lake successively.
Sediment Dredging has greater advantage in terms of bed mud improvement, but there is also two main problems, first is that dredging
Necessarily lead to a large amount of Dredged bed mud in the process, and bed mud moisture content is high, transport difficult, heavy metal, nitrogen, phosphorus and organic matter contain
Height is measured, if cannot obtain reasonably handling again meeting bag carrys out secondary pollution.Therefore, Dredged bed mud is handled and disposed, environment is reduced
Risk, and be current dredging technology urgent problem to be solved to being damaged substrate after dredging and repair.
Currently, mainly having following three both at home and abroad for the processing of pollution waste sludge (sewage plant sludge/lake dredging bed mud)
Kind method, sludge sanitary landfilling, burning and land use.Pollution waste sludge sanitary landfilling treatment process is simple, cost is relatively low, can
Short-term response is applied in China than wide.The disadvantage is that needing to occupy a large amount of landfill place and amount transport expense, while right
Pollution waste sludge soil mechanics performance there are certain requirements, and need to carry out Anti-seeping technology to landfill place, prevent from making underground water
At pollution；Burning disposal mode can reach the maximum minimizing (remaining grey matter is 1/10 or so of original volume) of pollution waste sludge,
It is most thorough processing method.The property for polluting grey matter after waste sludge is burned is stablized, odorless, pathogen-free domestic biology.Grey matter
It can be using recycling as soil conditioner, production building materials etc..However, burning disposal also have the shortcomings that it is obvious: it is disposable to put into
Greatly；Operation and maintenance it is at high cost；Content of beary metal may be exceeded in grey matter after burning, will cause secondary dirt without processing discharge
Dye.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of solidifications of pollution waste sludge to stablize
Change processing method, product and application.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of pollution waste sludge solidification stabilization
Change processing method, the method at least includes the following steps:
Prepare curing agent: into waterworks tail mud, addition includes the composite material of clay material and cellulose, consolidate
Agent；
Curing process: the curing agent is mixed with pollution waste sludge to be processed, adjusts pH value, solidification.
Second aspect of the present invention provides a kind of solidification sludge, handles for aforementioned contamination waste sludge solidification and stabilization processing method
Obtained solidification sludge.
Third aspect present invention provides a kind of method for carrying out side slope reparation using solidification sludge above-mentioned, including walks as follows
It is rapid:
(1) side slope is cleared up, and repairs local dent area, guarantees that slope surface is smooth along section direction；
(2) anchor pole is set, reinforcing side slope is used to support；
(3) first layer wire netting is hung in slope surface；
(4) first layer substrate is sprayed, jet thickness is 50~80mm；The substrate includes the solidification sludge, peat soil
With the preparation for plant growth；
(5) after first layer substrate to be sprayed condensation, first base material layer is formed, in slope surface plus support plate or ecological item bag；
(6) second layer wire netting is hung in the first base material layer；
(7) second layer substrate and seed are sprayed simultaneously, and the jet thickness is 30~40mm, and the density of vegetable seeds is
25-30g/m2；
(8) it is laid with non-woven fabrics.
As described above, pollution waste sludge solidification and stabilization processing method, product and application of the invention, have beneficial below
Effect:
Conversion and cycle, immobilization fortune are unable in nature for after sludge of sewage treatment plant existing in the prior art solidification
At high cost, the problem of econmics comparison difference of row, the present invention provides a kind of solidification and stabilization processing methods for polluting waste sludge, use
The absorption and fixation of environmentally harmful substance in pollution waste sludge, while reducing its moisture content.This method effectively drops
The dosage of low clay material reduces immobilization cost, realizes the conversion and cycle of pollution waste sludge in nature.
It has stronger suction-operated to heavy metal ion and organic matter to the present invention, may advantageously facilitate pollution waste sludge
Fixing-stable.Fixing-stableization treated sludge is used for the construction and reparation of slope greening, the pollution after solidification and stabilization
Waste sludge is had good water retention property, provides carrier for slope greening plant growth, and further fixed simultaneously using plant
Pollutant in mixing sludge is adsorbed, the recycling of waste resource is realized, ensures that it recycles conversion in nature, it is useless to pollution
The development for abandoning mud processing disposal technology, has very strong guiding function.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
The present invention provides a kind of pollution waste sludge solidification and stabilization processing method, and the method at least includes the following steps:
Prepare curing agent: into waterworks tail mud, addition includes the composite material of clay material and cellulose, consolidate
Agent；
Curing process: the curing agent is mixed with pollution waste sludge to be processed, adjusts pH value, solidification.
The present invention be mixed with using composite material, the waterworks tail mud of clay and cellulose after Overheating Treatment and
At fixing agent, add waterworks tail mud, can reduce the dosage of rich calcium clay material, reduce immobilization cost, simultaneously
Achieve the purpose that the treatment of wastes with processes of wastes against one another.
Further, the composite material is mixed by the clay material after being heat-treated with cellulose, the heat treatment
The dry weight ratio of clay material and cellulose afterwards is 100:10~100:20.The present invention is using the clay after Overheating Treatment
It is mixed with cellulose according to dry weight ratio 100:10~100:20, the composite material absorption property of formation greatly enhances.
Further, the clay material is selected from sepiolite, concave convex rod or foresite clay mineral, the sepiolite
Molecular composition is Mg4Si6O15(OH)2·6H2O, the attapulgite clay mineral molecular composition are Mg5Si8O20(OH)2
(OH2)4·4H2O, the foresite clay mineral molecular composition are NaCa2[Al5Si13O36]·14H2O。
In one embodiment, the cellulose source is from wheat stalk.Optionally, by soda acid cooking process from Wheat Straw
The cellulose is extracted in stalk.Cellulose can be extracted from wheat stalk using soda acid cooking process, promote waste resource again
It utilizes.
In one embodiment, the waterworks tail mud drum, which is included, carries out the production obtained after water process using flocculant
Object, the content of Fe is 50g/kg~280g/kg in the flocculant, and the content of Al is 54g/kg~243g/kg.
In one embodiment, pH value is adjusted to 7~8.In alkalescent.It is outstanding that alkalescent is conducive to fixing agent flock
The presence of floating object converts the absorption of heavy metal ion and organic matter in pollution waste sludge.
In one embodiment, the curing agent is graininess；
In one embodiment, the pollution waste sludge be selected from one of sewage plant sludge and lake dredging bed mud or
It is a variety of.
In one embodiment, the composite material is using the method preparation included the following steps:
(1) clay material is fabricated to graininess, particle size is 50~100 mesh, and the temperature condition in Muffle furnace
Lower heating 1h；
(2) cellulose is added in the mixed aqueous solution of NaOH and urea, after being vigorously stirred 15min, is put into low temperature 20
DEG C refrigerator in freeze 12h；
(3) it is in limpid for quickly stirring the cellulose solids after freezing at room temperature to solution, with clay material in step (1)
Material is that 100:10~100:20 is mixed according to dry weight ratio, obtains the composite material.
In one embodiment, temperature condition of the attapulgite clay in Muffle furnace is 800 DEG C.Sepiolite clay is in horse
Not the temperature condition in furnace is 550 DEG C.Temperature condition of the foresite clay in Muffle furnace is 500 DEG C.
In one embodiment, in the mixed aqueous solution of NaOH and urea, the mass fraction of NaOH is 6%, urea
Mass fraction be 4%.
In one embodiment, the preparation method of the curing agent includes the following steps:
(4) waterworks tail mud is acquired, the high-pressure steam sterilizing pan by 105 DEG C of conditions handles 20~30min, removes tail
Bacterium present in mud and some other harmful substances reduce its moisture content to 60%-70%；
(5) by the composite material and step (4) processed waterworks tail mud according to dry weight ratio 5:100~
10:100 is uniformly mixed, and is adjusted mixture pH between 7~8, curing process and is dried under natural environmental condition；
(6) material after step (5) solidifies is fabricated to graininess, particle size is 30~60 mesh, in 105 DEG C of items
It is dried under part, obtains curing agent, hermetically drying storage.
The composite material of clay and cellulose after heat treatment, waterworks tail mud are according to dry weight ratio 5:100~10:
100 are uniformly mixed with curing agent, and best fixed effect can be obtained with least cost, while being conducive to curing agent again to sludge
The abundant absorption of the harmful substances such as middle heavy metal ion.
In one embodiment, solidification processing method includes the following steps:
(7) acquisition pollution waste sludge, the high-pressure steam sterilizing pan by 105 DEG C of conditions handle 20~30min, remove sludge
Present in bacterium and some other harmful substances, reduce its moisture content to 60%-70%；
(8) curing agent and step (7) processed pollution waste sludge that will be obtained by step (6) are according to dry weight ratio
It is mixed for 50:100~80:100, adjusts mixing sludge neutrality or meta-alkalescence, pH value 7-8 solidify 10- under field conditions (factors)
15 days, detect the heavy metal and the content of organic matter of its free state.
The moisture content of control pollution waste sludge is 60%~70%, is conducive to curing materials and pollutes the uniform mixed of waste sludge
It closes, promotes the absorption process of the harmful substance of pollution waste sludge.
The composite material of clay and cellulose after heat treatment, waterworks tail mud are according to dry weight ratio 5:100~10:
100 be uniformly mixed with the mixed dry weights of curing agent, curing agent and sludge of sewage treatment plant than control be 50:100~
80:100 can obtain best fixed effect with least cost, while be conducive to curing agent again to Heavy Metals in Sludge ion
Etc. harmful substances abundant absorption.
Solidification sludge provided by the invention handles to obtain using aforementioned contamination waste sludge solidification and stabilization processing method
Solidification sludge.
The method provided by the invention for carrying out side slope reparation using solidification sludge above-mentioned, includes the following steps:
(1) side slope is cleared up, and repairs local dent area, guarantees that slope surface is smooth along section direction；
(2) anchor pole is set, reinforcing side slope is used to support；
(3) first layer wire netting is hung in slope surface；
(4) first layer substrate is sprayed, jet thickness is 50~80mm；The substrate includes the solidification sludge, peat soil
With the preparation for plant growth；
(5) after first layer substrate to be sprayed condensation, first base material layer is formed, in slope surface plus support plate or ecological item bag；
(6) second layer wire netting is hung in the first base material layer；
(7) second layer substrate and seed are sprayed simultaneously, and the jet thickness is 30~40mm, and the density of vegetable seeds is
25-30g/m2；
(8) it is laid with non-woven fabrics.
Using the side slope restorative procedure of Double-level Reticulated+support plate (planting carded sliver bag), compared to alien earth sparging and monolayer net linked network
Alien earth sparging is more advantageous to the attachment of soil matrix and vegetable seeds, promotes plant growth, ensures repairing effect；While its
Structure is more stable.This method can be applied in complicated high gradient slope reparation.
In one embodiment, in step (1), the local dent area is that depth is greater than 15cm, and area is more than 0.3m2
Region.
In one embodiment, when side slope is cleared up, sundries, float stone and clast in slope surface should be cleaned out.
In one embodiment, in step (2), anchor pole is set with slope surface into 80~an angle of 90 degrees, is drilled using air drill, hole
Deviation is not more than 50mm, the perfusion of M30 cement mortar, and anchor pole presses slope line space 1000*1000mm arranged for interval in the shape of " pin ",
150~200mm of anchor pole exposure slope surface.
In one embodiment, in step (3), at top of the slope, wire netting stretch out 500~800mm of top of the slope, with anchor pole at
Isosceles triangle fixation is embedded under soil；Wire netting lap-joint is no less than 150mm, and is fastened with iron wire, connector knot, to be linked to be integral net
Chip architecture is fixed between anchor pole and wire netting using tied silk；Iron wire should be close to slope surface, distance about 20~40mm；Slope surface is adjacent
Upper and lower two throw the net when overlapping, and net below is placed on bottom, and the knot for connecing net is arranged with blossom type.
In one embodiment, the wire netting is selected from hot galvanizing wire netting, and specification isMesh 65*
65mm。
Optionally, second layer wire netting is identical as the net suspension mode of first layer wire netting and specification.
In one embodiment, in step (4), the preparation for plant growth includes water-retaining agent, organic fertilizer, nothing
It is one or more in machine fertilizer, insecticide and microelement.Preferably, the organic fertilizer is biological organic fertilizer.Optionally, described
In biological organic fertilizer, carbon: nitrogen ratio: 12:1~20:1.Optionally, the inorganic fertilizer is nitrogen-phosphorus-potassium compound fertilizer.The microelement
Refer to microelement necessary to plant growth.
In one embodiment, described (solidification sludge+peat soil): organic fertilizer: the ratio of inorganic fertilizer is (67~72):
(25~30): (1~3).
In one embodiment, the muddy first layer substrate stirred is mechanically injected wire netting with sowing grass seeds by duster
It is interior, 50~80mm of jet thickness, in sprayed construction, can in slope surface every 100m2Stake is indicated with one thickness of steel-bar arrangement, really
Protect the thickness and uniformity of first layer substrate.
In one embodiment, pioneer's type, localization, multi items, seasonal adaptation sowing are selected according to different regions
In conjunction with formation group, three-dimensional ecological effect.Filling, grass seed selection Festuca Arundinacea, coreopsis, lucerne for example, Guizhou province is sowed grass seeds by duster
Mu, pyracantha fortuneana, double pod Chinese scholartrees, akeake, Chinese sumac, pink indigo, Coriaria sinica etc., sowing of sowing grass seeds by duster wood seed density are 25-30g/m2。
In one embodiment, in step (5), support plate or ecological item bag are laterally put perpendicular to slope surface is elongated, on
Lower spacing 1000mm, with iron wire binding and fixing on anchor pole.
The ecology item bag refers to the ecology bag of bar shaped.
In one embodiment, the support board width is 60~80mm, with a thickness of 15~30mm；The ecology item bagThe ecology item bag is made selected from polypropylene material.The support plate is plank.With moisture resistant, it is anticorrosive,
Anti- degradation, feature low in cost.
In one embodiment, in step (7), side slope soil keeps wet when sowing grass seeds by duster, the mud that will be stirred
Pulpous state hybrid substrate and seed are mechanically injected in wire netting with sowing grass seeds by duster.
In one embodiment, in step (8), non-woven fabrics carries out bedding from top to bottom, is fixed with bamboo stick or U-shaped nail,
Pay attention to keeping having a common boundary.Preferably, the covering of non-woven fabrics removes after seedling all sprouts.Optionally, the specification of the non-woven fabrics is 12-
16g/m2.In one embodiment, the method also includes:
(9) maintenance management
After plant is sowed grass seeds by duster, pay attention in grass seeds germination, the maintenance work of phase of taking root at level ground phase and nursery stock recovery.
(10) observation detection
The growing state in observation of plant later period, and detect heavy metal in soil and the content of organic matter in due course, and solidifies before
Solidification sludge after stabilisation compares.
Example 1:
A kind of pollution waste sludge solidification and stabilization processing method,
It chooses Lupanshui City water supply parent company tail mud to use using Fe salt, Al salt as the raw material of flocculant, wherein the content of Fe
For 83g/kg, the content of Al is 245g/kg；
The clay material of selection is sepiolite, and the sepiolite molecular composition is Mg4Si6O15(OH)2·6H2O；
A kind of pollution waste sludge solidification and stabilization processing method, step are；
(1) Lupanshui City water supply parent company tail mud is acquired, the high-pressure steam sterilizing pan by 105 DEG C of conditions handles 20min,
Bacterium and some other harmful substances present in useless tail mud are removed, reduces its moisture content to 70%.
(2) sepiolite is fabricated to graininess, particle size is 50 mesh, and 550 DEG C of temperature strips in Muffle furnace
1h is heated under part；
(3) it weighs appropriate cellulose to be added in NaOH (6%)/urea (4%) aqueous solution, after being vigorously stirred 15min, be put into
12h is freezed in the refrigerator that 20 DEG C of low temperature；
(4) it is in limpid for quickly stirring the cellulose solids that (3) freeze to solution at room temperature, with sepiolite material in (2)
Material is that 100:10 is mixed according to dry weight ratio；
It (5) will be by step (4) processed composite material and step (1) processed waterworks tail mud according to dry weight
Mass ratio 5:100 is uniformly mixed, and adjusting mixture pH is 7, curing process and is dried under natural environmental condition；
(6) material after step (5) solidifies is fabricated to graininess, particle size is 50 mesh, under the conditions of 105 DEG C
Drying, hermetically drying storage.
(7) acquisition Lupanshui City water utilities sewage treatment plant, Co., Ltd pollutes waste sludge, and (sampling, detects its middle reaches
Amorph content of beary metal Cu37.2mg/kg, Pb95.3mg/kg, Zn350.2mg/kg, Cd4.21mg/kg, Cr53.21mg/kg)
High-pressure steam sterilizing pan by 105 DEG C of conditions handles 20min, removes bacterium and some other nuisances present in sludge
Matter reduces its moisture content to 60%；
(8) it is according to dry weight ratio with the processed pollution waste sludge of step (7) by the material obtained by step (6)
50:100 is mixed, and mixing sludge neutrality is adjusted, and pH value 7 solidifies 10 days under field conditions (factors), detects a huge sum of money for its free state
Category and the content of organic matter；
A kind of side slope reparation soil moved in improve the original resource utilization polluting waste sludge solidification and stabilization processing method,
It chooses Lupanshui City great river economic development zone and educates K4+190-K4+320 sections of the right slope constructions of moral curb line, apply
Work step is rapid are as follows:
(1) side slope is cleared up
Sundries, float stone, clast in slope surface etc. should be cleaned out, and to slope surface local dent area (depth be greater than 15cm,
Area is more than 0.3m2) repaired, guarantee that slope surface is smooth along section direction.
(2) substrate of sowing grass seeds by duster configuration
It sows grass seeds by duster substrate requirement: solidification and stabilization waste sludge, peat soil, water-retaining agent, organic fertilizer, inorganic fertilizer, insecticide, other
Microelement etc.；Biological organic fertilizer (carbon: nitrogen ratio: 12:1) wherein is added, improvement soil quality ratio is (soil moved in improve the original+peat soil): (raw
Organic fertilizer): (nitrogen-phosphorus-potassium compound fertilizer)=68:30:2.
(3) anchor pole is set
Anchor pole, which is set, to be drilled with slope surface at 80~an angle of 90 degrees using air drill, and hole deviation is not more than 50mm, M30 cement bonded sand
Slurry perfusion, length 600mm, anchor pole press slope line space 1000*1000mm arranged for interval in the shape of " pin ", anchor pole exposure slope surface
150~200mm.
(4) first layer net is hung
Wire netting uses hot galvanizing wire netting, and specification isMesh 65*65mm.At top of the slope, wire netting stretches out
Top of the slope 500mm, with anchor pole, fixation is embedded under soil in a triangle.Wire netting lap-joint is no less than 150mm, and is fastened with iron wire, connects
Head knot, to be linked to be integral net chip architecture, is fixed between anchor pole and wire netting using tied silk.Iron wire should be close to slope surface, and distance is about
For 20mm；Slope surface is adjacent two to throw the net when overlapping up and down, and net below is placed on bottom, and the knot for connecing net is arranged with blossom type.
(5) first layer substrate is sprayed
The muddy hybrid substrate stirred is mechanically injected in wire netting with dedicated sow grass seeds by duster, jet thickness
50mm, in sprayed construction, can in slope surface every 100m2Indicate stake with one thickness of steel-bar arrangement, it is ensured that the thickness of substrate and
Uniformity.
(6) fixed support plate
After first layer substrate condensation to be sprayed, in slope surface plus support plate, support plate wide 70mm, thickness 20mm, plank is horizontal
It is put to perpendicular to slope surface is elongated, between the upper and lower away from 1000mm, with iron wire binding and fixing on anchor pole.
(7) second layer net is hung
Net suspension mode and specification are the same as first layer net.
(8) thin layer base material and seed are sprayed
Side slope soil should be kept wet when sowing grass seeds by duster, as slope surface too dry need to spray water moisturizing.The mud that will be stirred
Shape hybrid substrate and seed are mechanically injected in wire netting with dedicated sow grass seeds by duster, jet thickness 30mm.Vegetable seeds density of sowing grass seeds by duster is
25g/m2。
(9) it is laid with non-woven fabrics
For the germination percentage for ensuring seed, bedding is carried out from top to bottom with non-woven fabrics.It is fixed with bamboo stick or U-shaped nail, pays attention to protecting
It holds and has a common boundary.The covering of non-woven fabrics plays the role of water conservation and keeps the temperature and can prevent germination period rainwater from washing away to slope surface.Non-woven fabrics
Covering can remove after seedling all sprouts.
(10) maintenance management
After plant is sowed grass seeds by duster, pay attention in grass seeds germination, the maintenance work of phase of taking root at level ground phase and nursery stock recovery.
(11) observation detection
The growing state in observation of plant later period, and detect heavy metal in soil and the content of organic matter in due course, and solidifies before
Solidification sludge after stabilisation compares.
Construction is completed latter two moon, and slope greening plant of sowing grass seeds by duster grows fine, after half a year, vegetal inspired of sowing grass seeds by duster at group,
The ecological effect that three-dimensional sowing combines, the heavy metal and organic matter (Cu4.52mg/kg, Pb12.33mg/ of free state in soil
Kg, Zn39.21mg/kg, Cd0.72mg/kg, Cr6.53mg/kg) content substantially reduces, and only original 15% or so.
Example 2:
A kind of pollution waste sludge solidification and stabilization processing method,
It chooses Lupanshui City water supply parent company tail mud to use using Fe salt, Al salt as the raw material of flocculant, wherein the content of Fe
For 83g/kg, the content of Al is 245g/kg；
The clay material of selection is concave convex rod, and the concave convex rod molecular composition is Mg5Si8O20(OH)2(OH2)4·4H2O；
A kind of pollution waste sludge solidification and stabilization processing method, step are；
(1) Lupanshui City water supply parent company tail mud is acquired, the high-pressure steam sterilizing pan by 105 DEG C of conditions handles 25min,
Bacterium and some other harmful substances present in useless tail mud are removed, reduces its moisture content to 65%.
(2) sepiolite is fabricated to graininess, particle size is 70 mesh, and 800 DEG C of temperature strips in Muffle furnace
1h is heated under part；
(3) it weighs appropriate cellulose to be added in NaOH (6%)/urea (4%) aqueous solution, after being vigorously stirred 15min, be put into
12h is freezed in the refrigerator that 20 DEG C of low temperature；
(4) it is in limpid for quickly stirring the cellulose solids that (3) freeze to solution at room temperature, with bar concave-convex in (2)
Material is that 100:15 is mixed according to dry weight ratio；
It (5) will be by step (4) processed composite material and step (1) processed waterworks tail mud according to dry weight
Mass ratio 8:100 is uniformly mixed, and adjusting mixture pH is 7, curing process and is dried under natural environmental condition；
(6) material after step (5) solidifies is fabricated to graininess, particle size is 40 mesh, under the conditions of 105 DEG C
Drying, hermetically drying storage.
(7) acquisition Lupanshui City water utilities sewage treatment plant, Co., Ltd pollutes waste sludge, and (sampling, detects its middle reaches
Amorph content of beary metal Cu37.2mg/kg, Pb95.3mg/kg, Zn350.2mg/kg, Cd4.21mg/kg, Cr53.21mg/kg)
High-pressure steam sterilizing pan by 105 DEG C of conditions handles 20min, removes bacterium and some other nuisances present in sludge
Matter reduces its moisture content to 65%；
(8) it is according to dry weight ratio with the processed pollution waste sludge of step (7) by the material obtained by step (6)
60:100 is mixed, and mixing sludge neutrality is adjusted, and pH value 7 solidifies 12 days under field conditions (factors), detects a huge sum of money for its free state
Category and the content of organic matter；
A kind of side slope reparation soil moved in improve the original resource utilization polluting waste sludge solidification and stabilization processing method,
It chooses Lupanshui City great river economic development zone and educates K4+190-K4+320 sections of the right slope constructions of moral curb line, apply
Work step is rapid are as follows:
(1) side slope is cleared up
Sundries, float stone, clast in slope surface etc. should be cleaned out, and to slope surface local dent area (depth be greater than 15cm,
Area is more than 0.3m2) repaired, guarantee that slope surface is smooth along section direction.
(2) substrate of sowing grass seeds by duster configuration
It sows grass seeds by duster substrate requirement: solidification and stabilization waste sludge, peat soil, water-retaining agent, organic fertilizer, inorganic fertilizer, insecticide, other
Microelement etc.；Biological organic fertilizer (carbon: nitrogen ratio: 15:1) wherein is added, improvement soil quality ratio is (soil moved in improve the original+peat soil): (raw
Organic fertilizer): (nitrogen-phosphorus-potassium compound fertilizer)=69:29:2.
(3) anchor pole is set
Anchor pole, which is set, to be drilled with slope surface at 80~an angle of 90 degrees using air drill, and hole deviation is not more than 50mm, M30 cement bonded sand
Slurry perfusion, length 700mm, anchor pole press slope line space 1000*1000mm arranged for interval in the shape of " pin ", anchor pole exposure slope surface
150~200mm.
(4) first layer net is hung
Wire netting uses hot galvanizing wire netting, and specification isMesh 65*65mm.At top of the slope, wire netting stretches out
Top of the slope 600mm, with anchor pole, fixation is embedded under soil in a triangle.Wire netting lap-joint is no less than 150mm, and is fastened with iron wire, connects
Head knot, to be linked to be integral net chip architecture, is fixed between anchor pole and wire netting using tied silk.Iron wire should be close to slope surface, and distance is about
For 25mm；Slope surface is adjacent two to throw the net when overlapping up and down, and net below is placed on bottom, and the knot for connecing net is arranged with blossom type.
(6) first layer substrate is sprayed
The muddy hybrid substrate stirred is mechanically injected in wire netting with dedicated sow grass seeds by duster, jet thickness
60mm, in sprayed construction, can in slope surface every 100m2Indicate stake with one thickness of steel-bar arrangement, it is ensured that the thickness of substrate and
Uniformity.
(7) fixed support plate
After first layer substrate condensation to be sprayed, in slope surface plus support plate, support plate wide 80mm, thickness 25mm, plank is horizontal
It is put to perpendicular to slope surface is elongated, between the upper and lower away from 1000mm, with iron wire binding and fixing on anchor pole.
(8) second layer net is hung
Net suspension mode and specification are the same as first layer net.
(9) thin layer base material and seed are sprayed
Side slope soil should be kept wet when sowing grass seeds by duster, as slope surface too dry need to spray water moisturizing.The mud that will be stirred
Shape hybrid substrate and seed are mechanically injected in wire netting with dedicated sow grass seeds by duster, jet thickness 40mm.Vegetable seeds density of sowing grass seeds by duster is
28g/m2。
(10) it is laid with non-woven fabrics
For the germination percentage for ensuring seed, bedding is carried out from top to bottom with non-woven fabrics.It is fixed with bamboo stick or U-shaped nail, pays attention to protecting
It holds and has a common boundary.The covering of non-woven fabrics plays the role of water conservation and keeps the temperature and can prevent germination period rainwater from washing away to slope surface.Non-woven fabrics
Covering can remove after seedling all sprouts.
(11) maintenance management
After plant is sowed grass seeds by duster, pay attention in grass seeds germination, the maintenance work of phase of taking root at level ground phase and nursery stock recovery.
(12) observation detection
The growing state in observation of plant later period, and detect heavy metal in soil and the content of organic matter in due course, and solidifies before
Solidification sludge after stabilisation compares.
Construction is completed latter two moon, and slope greening plant of sowing grass seeds by duster grows fine, after half a year, vegetal inspired of sowing grass seeds by duster at group,
The ecological effect that three-dimensional sowing combines, the heavy metal and organic matter (Cu8.53mg/kg, Pb7.25mg/ of free state in soil
Kg, Zn17.25mg/kg, Cd0.15mg/kg, Cr9.97mg/kg, Ni4.56mg/kg) content substantially reduces, and it is only original
12% or so.
Example 3:
A kind of pollution waste sludge solidification and stabilization processing method,
It chooses Lupanshui City water supply parent company tail mud to use using Fe salt, Al salt as the raw material of flocculant, wherein the content of Fe
For 83g/kg, the content of Al is 245g/kg；
The clay material of selection is foresite, and the foresite clay mineral molecular composition is NaCa2
[Al5Si13O36]·14H2O；；
A kind of pollution waste sludge solidification and stabilization processing method, step are；
(1) Lupanshui City water supply parent company tail mud is acquired, the high-pressure steam sterilizing pan by 105 DEG C of conditions handles 30min,
Bacterium and some other harmful substances present in useless tail mud are removed, reduces its moisture content to 60%.
(2) foresite is fabricated to graininess, particle size is 100 mesh, and 500 DEG C of temperature strips in Muffle furnace
1h is heated under part；
(3) it weighs appropriate cellulose to be added in NaOH (6%)/urea (4%) aqueous solution, after being vigorously stirred 15min, be put into
12h is freezed in the refrigerator that 20 DEG C of low temperature；
(4) it is in limpid for quickly stirring the cellulose solids that (3) freeze to solution at room temperature, with bar concave-convex in (2)
Material is that 100:15 is mixed according to dry weight ratio；
It (5) will be by step (4) processed composite material and step (1) processed waterworks tail mud according to dry weight
Mass ratio 10:100 is uniformly mixed, and adjusting mixture pH is 7, curing process and is dried under natural environmental condition；
(6) material after step (5) solidifies is fabricated to graininess, particle size is 30 mesh, under the conditions of 105 DEG C
Drying, hermetically drying storage.
(7) the big reach river drift of acquisition six disk water, three Cha He pollutes waste sludge, and (sampling detects wherein free state weight
Tenor Cu105mg/kg, Pb237mg/kg, Zn704mg/kg, Cd5.59mg/kg, As25.41mg/kg, Hg0.37mg/
Kg, Ni34.21mg/kg) high-pressure steam sterilizing pan by 105 DEG C of conditions handles 30min, remove bacterium present in sludge and
Some other harmful substances reduce its moisture content to 60%；
(8) it is according to dry weight ratio with the processed pollution waste sludge of step (7) by the material obtained by step (6)
70:100 is mixed, and mixing sludge neutrality is adjusted, and pH value 7 solidifies 15 days under field conditions (factors), detects a huge sum of money for its free state
Category and the content of organic matter；
A kind of side slope reparation soil moved in improve the original resource utilization polluting waste sludge solidification and stabilization processing method,
K2+420-K2+460 sections of the right slope constructions of Lupanshui City great river economic development zone day lake curb line are chosen, are applied
Work step is rapid are as follows:
(1) side slope is cleared up
Sundries, float stone, clast in slope surface etc. should be cleaned out, and to slope surface local dent area (depth be greater than 15cm,
Area is more than 0.3m2) repaired, guarantee that slope surface is smooth along section direction.
(2) substrate of sowing grass seeds by duster configuration
It sows grass seeds by duster substrate requirement: solidification and stabilization waste sludge, peat soil, water-retaining agent, organic fertilizer, inorganic fertilizer, insecticide, other
Microelement etc.；Biological organic fertilizer (carbon: nitrogen ratio: 20:1) wherein is added, improvement soil quality ratio is (soil moved in improve the original+peat soil): (raw
Organic fertilizer): (nitrogen-phosphorus-potassium compound fertilizer)=67:30:3
(3) anchor pole is set
Anchor pole, which is set, to be drilled with slope surface at 80~an angle of 90 degrees using air drill, and hole deviation is not more than 50mm, M30 cement bonded sand
Slurry perfusion, length 800mm, anchor pole press slope line space 1000*1000mm arranged for interval in the shape of " pin ", anchor pole exposure slope surface
150~200mm.
(4) first layer net is hung
Wire netting uses hot galvanizing wire netting, and specification isMesh 65*65mm.At top of the slope, wire netting stretches out
Top of the slope 700mm, with anchor pole, fixation is embedded under soil in a triangle.Wire netting lap-joint is no less than 150mm, and is fastened with iron wire, connects
Head knot, to be linked to be integral net chip architecture, is fixed between anchor pole and wire netting using tied silk.Iron wire should be close to slope surface, and distance is about
For 25mm；Slope surface is adjacent two to throw the net when overlapping up and down, and net below is placed on bottom, and the knot for connecing net is arranged with blossom type.
(6) first layer substrate is sprayed
The muddy hybrid substrate stirred is mechanically injected in wire netting with dedicated sow grass seeds by duster, jet thickness
80mm, in sprayed construction, can in slope surface every 100m2Indicate stake with one thickness of steel-bar arrangement, it is ensured that the thickness of substrate and
Uniformity.
(7) fixed to plant carded sliver bag
After first layer substrate condensation to be sprayed, in slope surface plus carded sliver bag is planted,Plant carded sliver bag laterally perpendicular to
Slope surface is elongated to put, between the upper and lower away from 1000mm, with iron wire binding and fixing on anchor pole.
(8) second layer net is hung
Net suspension mode and specification are the same as first layer net.
(9) thin layer base material and seed are sprayed
Side slope soil should be kept wet when sowing grass seeds by duster, as slope surface too dry need to spray water moisturizing.The mud that will be stirred
Shape hybrid substrate and seed are mechanically injected in wire netting with dedicated sow grass seeds by duster, jet thickness 35mm.Vegetable seeds density of sowing grass seeds by duster is
30g/m2。
(10) it is laid with non-woven fabrics
For the germination percentage for ensuring seed, bedding is carried out from top to bottom with non-woven fabrics.It is fixed with bamboo stick or U-shaped nail, pays attention to protecting
It holds and has a common boundary.The covering of non-woven fabrics plays the role of water conservation and keeps the temperature and can prevent germination period rainwater from washing away to slope surface.Non-woven fabrics
Covering can remove after seedling all sprouts.
(11) maintenance management
After plant is sowed grass seeds by duster, pay attention in grass seeds germination, the maintenance work of phase of taking root at level ground phase and nursery stock recovery.
(12) observation detection
The growing state in observation of plant later period, and detect heavy metal in soil and the content of organic matter in due course, and solidifies before
Solidification sludge after stabilisation compares.
Construction is completed latter two moon, and slope greening plant of sowing grass seeds by duster grows fine, after half a year, vegetal inspired of sowing grass seeds by duster at group,
The ecological effect that three-dimensional sowing combines, heavy metal (Cu10.7mg/kg, Pb21.6mg/kg, the Zn32mg/ of free state in soil
Kg, Cd0.52mg/kg, As3.32mg/kg, Hg0.03mg/kg, Ni2.27mg/kg) content substantially reduces, and it is only original
10% or so.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (14)
1. a kind of pollution waste sludge solidification and stabilization processing method, which is characterized in that the method at least includes the following steps:
Prepare curing agent: into waterworks tail mud, addition includes the composite material of clay material and cellulose, obtains curing agent；
Curing process: the curing agent is mixed with pollution waste sludge to be processed, adjusts pH value, solidification.
2. as described in claim 1 pollution waste sludge solidification and stabilization processing method, which is characterized in that the composite material by
Clay material after heat treatment is mixed with cellulose, the dry weight ratio of the clay material and cellulose after the heat treatment
For 100:10~100:20.
3. pollution waste sludge solidification and stabilization processing method as claimed in claim 2, which is characterized in that the clay material
Selected from sepiolite, concave convex rod or foresite clay mineral, the sepiolite molecular composition is Mg4Si6O15(OH)2·6H2O, institute
The attapulgite clay mineral molecular composition stated is Mg5Si8O20(OH)2(OH2)4·4H2O, the foresite clay mineral molecule
Group becomes NaCa2[Al5Si13O36]·14H2O。
4. pollution waste sludge solidification and stabilization processing method as described in claim 1, which is characterized in that the cellulose source is certainly
Wheat stalk, it is preferred that the cellulose is extracted from wheat stalk by soda acid cooking process.
5. pollution waste sludge solidification and stabilization processing method as described in claim 1, which is characterized in that the waterworks tail
Mud drum, which is included, carries out the product obtained after water process using flocculant, and the content of Fe is 50g/kg~280g/kg in the flocculant,
The content of Al is 54g/kg~243g/kg.
6. pollution waste sludge solidification and stabilization processing method as described in claim 1, which is characterized in that further include following characteristics
In it is one or more:
1) in curing process, pH value is adjusted to 7~8；
2) curing agent is graininess；
3) the pollution waste sludge is selected from one of sewage plant sludge and lake dredging bed mud or a variety of.
7. pollution waste sludge solidification and stabilization processing method as described in claim 1, which is characterized in that the composite material is adopted
It is prepared with the method included the following steps:
(1) clay material is fabricated to graininess, particle size is 50~100 mesh, and under the conditions of temperature in Muffle furnace plus
Hot 1h；
(2) cellulose is added in the mixed aqueous solution of NaOH and urea, after being vigorously stirred 15min, is put into 20 DEG C of low temperature
12h is freezed in refrigerator；
(3) it is in limpid for quickly stirring the cellulose solids after freezing at room temperature to solution, is pressed with clay material in step (1)
It is that 100:10~100:20 is mixed according to dry weight ratio, obtains the composite material.
8. pollution waste sludge solidification and stabilization processing method as claimed in claim 7, which is characterized in that the system of the curing agent
Preparation Method includes the following steps:
(4) waterworks tail mud is acquired, the high-pressure steam sterilizing pan by 105 DEG C of conditions handles 20~30min, removes in tail mud
Existing bacterium and some other harmful substances reduce its moisture content to 60%-70%；
(5) by the composite material and step (4) processed waterworks tail mud according to dry weight ratio 5:100~10:100
Uniformly mixing adjusts mixture pH between 7~8, curing process and dries under natural environmental condition；
(6) material after step (5) solidifies is fabricated to graininess, particle size is 30~60 mesh, under the conditions of 105 DEG C
Drying obtains curing agent, hermetically drying storage.
9. pollution waste sludge solidification and stabilization processing method as claimed in claim 8, which is characterized in that solidification processing method is also
Include the following steps:
(7) acquisition pollution waste sludge, the high-pressure steam sterilizing pan by 105 DEG C of conditions handle 20~30min, remove and deposit in sludge
Bacterium and some other harmful substances, reduce its moisture content to 60%-70%；
(8) it is according to dry weight ratio with the processed pollution waste sludge of step (7) by the curing agent obtained by step (6)
50:100~80:100 is mixed, and adjusts mixing sludge neutrality or meta-alkalescence, pH value 7-8 solidify 10-15 under field conditions (factors)
It, detects the heavy metal and the content of organic matter of its free state.
10. a kind of solidification sludge, at using any pollution waste sludge solidification and stabilization processing method of claim 1-9
Manage obtained solidification sludge.
11. a kind of method for carrying out side slope reparation using solidification sludge described in any one of claim 10, which is characterized in that including as follows
Step:
(1) side slope is cleared up, and repairs local dent area, guarantees that slope surface is smooth along section direction；
(2) anchor pole is set, reinforcing side slope is used to support；
(3) first layer wire netting is hung in slope surface；
(4) first layer substrate is sprayed, jet thickness is 50~80mm；The substrate includes the solidification sludge, peat soil and use
In the preparation of plant growth；
(5) after first layer substrate to be sprayed condensation, first base material layer is formed, in slope surface plus support plate or ecological item bag；
(6) second layer wire netting is hung in the first base material layer；
(7) second layer substrate and seed are sprayed simultaneously, and the jet thickness is 30~40mm, and the density of vegetable seeds is 25-
30g/m2；
(8) it is laid with non-woven fabrics.
12. the method for side slope reparation as claimed in claim 11, which is characterized in that further include one or more in following characteristics
:
A. in step (1), the local dent area is that depth is greater than 15cm, and area is more than 0.3m2Region；
B. in step (2), anchor pole is set with slope surface into 80~an angle of 90 degrees, is drilled using air drill, and hole deviation is not more than 50mm, M30
Cement mortar perfusion, anchor pole press slope line space 1000*1000mm arranged for interval in the shape of " pin ", anchor pole exposure slope surface 150~
200mm；
C. in step (3), at top of the slope, wire netting stretches out 500~800mm of top of the slope, and with anchor pole, fixation is embedded under soil in a triangle；
Wire netting lap-joint is no less than 150mm, and is fastened with iron wire, connector knot, to be linked to be integral net chip architecture, anchor pole and wire netting
Between fixed using tied silk；Iron wire should be close to slope surface, distance about 20~40mm；Slope surface is adjacent two to throw the net when overlapping up and down, under
The net in face is placed on bottom, and the knot for connecing net is arranged with blossom type；
D. in step (4), the preparation for plant growth includes water-retaining agent, organic fertilizer, inorganic fertilizer, insecticide and micro member
It is one or more in element；Preferably, the organic fertilizer is biological organic fertilizer；
E. in step (5), support plate or ecological item bag are laterally put perpendicular to slope surface is elongated, between the upper and lower away from 1000mm, use iron wire
Binding and fixing are on anchor pole；
F. in step (7), side slope soil keeps wet when sowing grass seeds by duster, and the muddy hybrid substrate and seed that stir are used
It sows grass seeds by duster and is mechanically injected in wire netting；
G. in step (8), non-woven fabrics carries out bedding from top to bottom, is fixed with bamboo stick or U-shaped nail, pays attention to keeping having a common boundary；Preferably,
The covering of non-woven fabrics removes after seedling all sprouts.
13. the method for side slope reparation as claimed in claim 12, which is characterized in that further include one or more in following characteristics
:
1) in feature c, the wire netting is selected from hot galvanizing wire netting, and specification isMesh 65*65mm；
2) described (solidification sludge+peat soil) in feature d: organic fertilizer: the ratio of inorganic fertilizer is (67~72): (25~30): (1
~3)；
3) in feature e, the support board width is 60~80mm, with a thickness of 15~30mm；The ecology item bag
The ecology item bag is made selected from polypropylene material.
14. the method for side slope reparation as claimed in claim 13, which is characterized in that further include one or more in following characteristics
:
4) feature 1) in, second layer wire netting is identical as the net suspension mode of first layer wire netting and specification；
5) feature 2) in, the muddy first layer substrate stirred is mechanically injected in wire netting with sowing grass seeds by duster, injection is thick
Spend 50~80mm, in sprayed construction, can in slope surface every 100m2Stake is indicated with one thickness of steel-bar arrangement, it is ensured that first layer
The thickness and uniformity of substrate；
6) it in step (4), selects pioneer's type, localization, multi items, seasonal adaptation sowing to combine according to different regions, is formed
Group, three-dimensional ecological effect；
7) in step (8), the specification of the non-woven fabrics is 12-16g/m2。
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Effective date of registration: 20221208 Address after: 200434 Shanghai city Hongkou District Yixian Road No. 388 Patentee after: SHANGHAI INVESTIGATION, DESIGN & RESEARCH INSTITUTE Co.,Ltd. Patentee after: Three Gorges Technology Co.,Ltd. Address before: 200434 Shanghai city Hongkou District Yixian Road No. 388 Patentee before: SHANGHAI INVESTIGATION, DESIGN & RESEARCH INSTITUTE Co.,Ltd. |