CN106110759A - Environment-friendly type paint slag dehydrating and conditioning agent and application thereof - Google Patents
Environment-friendly type paint slag dehydrating and conditioning agent and application thereof Download PDFInfo
- Publication number
- CN106110759A CN106110759A CN201610654185.7A CN201610654185A CN106110759A CN 106110759 A CN106110759 A CN 106110759A CN 201610654185 A CN201610654185 A CN 201610654185A CN 106110759 A CN106110759 A CN 106110759A
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- Prior art keywords
- paint slag
- conditioning agent
- dehydrating
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- friendly type
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/03—Processes of filtration using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Paints Or Removers (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to environment-friendly type paint slag dehydrating and conditioning agent and application thereof, this conditioner is made up of the component of following weight portion: phosphatization mud: 5%～10%；Trivalent iron salt: 0.5%～2%；Activated silicic acid sodium: 0.5%～3%；Bentonite: 0.5%～3%；Surfactant: 0.025%～0.05%；Polyacrylamide: 0.025%～0.05%；Environment-friendly type paint slag dehydrating and conditioning agent is used for painting slag dehydration；Described environment-friendly type paint slag dehydrating and conditioning agent can be used for painting slag dehydration.Compared with prior art, the paint slag conditioner of the present invention utilizes refuse, and with low cost, consumption is few, can effectively reduce the cost of paint slag dehydration.Paint slag dewatering pressure after conditioning is little, and operation energy consumption is little, and expense is low.
Description
Technical field
The present invention relates to a kind of dehydrating and conditioning agent, especially relate to a kind of environment-friendly type paint slag dehydrating and conditioning agent and application thereof.
Background technology
Along with the fast development of economic society, the mechanical industry development such as automobile, boats and ships, product surface is being sprayed
While lacquer craftwork, creating substantial amounts of paint slag, paint slag moisture content is high here and pollutes containing substantial amounts of benzene homologues, heavy metal etc.
Thing；In stacking process, also can produce substantial amounts of VOC, major polluting atmosphere environment, it is therefore necessary to paint slag carry out legal effectively
Process.The most safer method of disposal, for burning, is burned and is just required moisture content, and therefore we need to enter paint slag
Row dehydration is to reduce heat supplement and the cost of transportation of burning process.Oiliness is sprayed paint as widely used in lacquer spraying technique and ripe
The technology of application, has the advantages such as spraying effect is good, operating cost is low, but also produces substantial amounts of paint slag simultaneously.Paint slag is as ring
The significant challenge that border is administered, an important reason is exactly the high expense painting Slag treatment with disposal.Experience have shown that, domestic
The paint quantity of slag that automotive lacquer produces is 2.5～5kg, paints the about 7 yuan/kg of processing cost of slag, i.e. each family car at present and produces
Paint Slag treatment and the expense 17.5 yuan～35 yuan of disposal, according to 1173.6 ten thousand, the whole nation in 2015, paint the slag cost of disposal whole year 2
～400,000,000 yuan, if moisture content can be reduced, will significantly lower cost of disposal.
Paint slag composition complexity, containing substantial amounts of dimethylbenzene, aromatic hydrocarbon, alcohol ethers, esters and heavy metal etc., wherein
Heavy metal and toxic organic compound matter, if the most suitably processing, it will produce secondary pollution, to paint slag muck put ring around area
Animal, plant and the mankind in border cause harm greatly.Additionally, paint slag flco mostly is g., jelly-like, hydrophilic is strong, causes not
Easily dehydration；So, paint slag bulky, be not easy to the transport in later stage, store and dispose.Before paint slag is disposed, it usually needs
It is dehydrated, to reduce paint slag volume, and paints the key link that slag conditioning is paint slag dehydration.
The most effective, low cost flocculant is the core of this technology, in some the most conventional flocculant, inorganic
Flocculant dosage is bigger, and cost is high, and it is taken from nature mineral resources substantially, is also a kind of destruction to environment.Cause
This, exploitation environmental protection, low cost paint slag deep dehydration conditioner be crucial, as the preceding working procedure phosphatization of lacquer spraying technique, can produce
Giving birth to substantial amounts of phosphatization mud, it is mainly calcium phosphate material, and its waste water coming from same flow process processes, and does not the most produce extra
Expense, the most mutually nurses one's health and can play respective strong point with synergism, play the effect of effects enhancing and dose reducing so that this is combined adjusts
Reason agent has particularly well application prospect to this type of industry.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of and effectively reduce paint slag
The paint little environment-friendly type paint slag dehydrating and conditioning agent of slag dewatering pressure after the cost of dehydration, conditioning and application thereof.
The purpose of the present invention can be achieved through the following technical solutions:
Environment-friendly type paint slag dehydrating and conditioning agent, this conditioner is made up of the component of following weight portion:
The phosphorized waste water that described phosphatization mud processed selected from feeding lime, ferrous sulfate or polyacrylamide produces
Mud.
Described phosphorized waste water mainly contains orthophosphoric acid root, Fe3+、Fe2+Deng and containing a small amount of Zn2+、Ni2+Deng.Described
During phosphatization mud produces, Calx is relative to the dosage 50～200mg/L of phosphatization mud, and ferrous sulfate is dirty relative to phosphatization
The dosage of mud is 50～200mg/L phosphorized waste waters, and polyacrylamide is 2～20mg/L relative to the dosage of phosphatization mud.
Described trivalent iron salt is selected from Fe2(SO4)3、FeCl3Or Fe (NO3)3In one or more.
The preparation method of described active silicic acid sodium is: is at room temperature soaked in acid solution by sodium silicate, and stirs 3h
After, take and i.e. obtain active silicic acid sodium.Described acid solution and ratio 4ml/1g of activated silicic acid sodium, the concentration of described acid solution
For 1.0mol/L～2.0mol/L, described acid solution is selected from sulfuric acid solution.
Described surfactant is smooth selected from fatty glyceride, fatty acid Pyrusussuriensis or one or several in Polysorbate
Kind.
Described polyacrylamide is selected from the PAMA that molecular weight is 6,000,000-1,200 ten thousand.
The application of environment-friendly type paint slag dehydrating and conditioning agent, described environment-friendly type paint slag dehydrating and conditioning agent is used for painting slag dehydration, bag
Include following steps:
(1) under normal temperature and pressure conditions, add in pending paint slag and account for pending paint slag dry weight 0.025%～0.05%
Surfactant, quickly stirring at least 4 minutes；
(2) addition accounts for the trivalent iron salt of pending paint slag dry weight 0.5%～2%, quickly stirring at least 4 minutes；
(3) addition accounts for the phosphatization mud of pending paint slag dry weight 5%～10%, quickly stirring at least 3 minutes；
(4) add the activated silicic acid sodium accounting for pending paint slag dry weight 0.5%～3% and account for pending paint slag dry weight 0.5%
～the bentonite of 3%, low rate mixing at least 4 minutes；
(5) addition accounts for the polyacrylamide of pending paint slag dry weight 0.025%～0.05%, quickly stirring at least 1 minute；
(6) conditioned paint slag is carried out filter pressing.
Surfactant and ferric iron is added so that paint slag can reduce viscosity, simultaneously iron ion hydrolysis in paint slag early stage
Forming colloid hydroxy polymer or hydroxide precipitation, adhered to by electrostatic, net is caught etc. is acted on, and changes the stability of paint slag, volume
Sweep little granule paint slag, be formed with the floc particle of certain bearing capacity.Phosphatization mud in addition to calcium, the most also ferrum element, these
The total content of metallic element is about about 15%, and it can form how latticed skeleton in paint slag, strengthens the strong of flco
Degree, reduces compressibility, under the extruding of high pressure, still can keep water penetration filtering layer.
Bentonite is the aqueous clay ore deposit based on montmorillonite, smectite content typically more than 65%, its interlayer sun from
Son has stronger hydration, it is possible to the water being equivalent to own vol 8～20 times at Inter layer adsorption is expanded to 30 times, is situated between at water
Matter can be disperseed in soliquid, therefore there is in water bigger dilatancy.Tiny due to montmorillonite mineral crystal grain again, tool
There is bigger specific surface area, and interlaminar action power is more weak, the most peeling-off under solvent action, expand, separate and formed thinner
Single-chip, make montmorillonite have bigger internal surface area, therefore bentonite has higher absorbability.
Compared with prior art, the paint slag conditioner of the present invention, with low cost, consumption is few, can effectively reduce paint slag and take off
The cost of water.Paint slag dewatering pressure after conditioning is little, and operation energy consumption is little, and expense is low.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1:
The paint slag dehydrating and conditioning agent of the present embodiment, its formula comprises: accounts for the phosphatization mud of pending paint slag dry weight 5%, accounts for
The iron chloride of pending paint slag dry weight 1%, accounts for the activated silicic acid sodium of pending paint slag dry weight 1.5%, accounts for pending paint slag dry weight
The bentonite of 2%, accounts for the surfactant of pending paint slag dry weight 0.05%, accounts for pending paint slag dry weight 0.025% polypropylene
Amide.Wherein, Polysorbate, technical grade；Iron chloride, technical grade；Activated silicic acid sodium is that 1mol/L is sulfuric acid modified to be formed；Polypropylene
Amide, anion, molecular weight 10,000,000, technical grade.
The paint slag of East China automobile factory is processed by the paint slag dehydrating and conditioning agent using the present embodiment, and paint slag moisture content is
96.5%, add medicament by above-mentioned dosage, specifically include following steps:
The surfactant accounting for pending paint slag dry weight 0.05%, quickly stirring 4 minutes are added in pending paint slag；It
Rear addition accounts for the trivalent iron salt of pending paint slag dry weight 1%, quickly stirring 4 minutes；Add and account for pending paint slag dry weight 5%
Phosphatization mud, quickly stirring 3 minutes；Next add and account for the activated silicic acid sodium of pending paint slag dry weight 1.5% and account for pending
The bentonite of paint slag dry weight 2%, low rate mixing 4 minutes；It is eventually adding the polyacrylamide accounting for pending paint slag dry weight 0.025%
Amine, quickly stirring 1 minute；
After paint slag is conditioned, paint pulp pump injecting paint residues hydroextractor dehydration, the moisture content of gained Resina Toxicodendri slag is 65.5% left
Right；Paint slag ratio resistance after conditioning is 9.5 × 1011m/Kg。
Embodiment 2:
The paint slag dehydrating and conditioning agent of the present embodiment, its formula comprises: accounts for the phosphatization mud of pending paint slag dry weight 10%, accounts for
The trivalent iron salt of pending paint slag dry weight 0.5%, accounts for the activated silicic acid sodium of pending paint slag dry weight 0.5%, accounts for pending paint slag
The bentonite of dry weight 0.5%, accounts for the surfactant of pending paint slag dry weight 0.025%, accounts for pending paint slag dry weight 0.05%
Polyacrylamide.Wherein, Polysorbate, technical grade；Iron chloride, technical grade；Activated silicic acid sodium is that 1mol/L is sulfuric acid modified to be formed；
Polyacrylamide, anion, molecular weight 8,000,000, technical grade.
The paint slag of East China automobile factory is processed by the paint slag dehydrating and conditioning agent using the present embodiment, and paint slag moisture content is
94.5%, add medicament by above-mentioned dosage, specifically include following steps:
The surfactant accounting for pending paint slag dry weight 0.025%, quickly stirring 4 minutes are added in pending paint slag；
Add the trivalent iron salt accounting for pending paint slag dry weight 0.5%, quickly stirring 4 minutes afterwards；Add and account for pending paint slag dry weight
The phosphatization mud of 10%, quickly stirring 3 minutes；Next add and account for the activated silicic acid sodium of pending paint slag dry weight 0.5% and account for
The bentonite of pending paint slag dry weight 0.5%, low rate mixing 5 minutes；It is eventually adding and accounts for the poly-of pending paint slag dry weight 0.05%
Acrylamide, quickly stirring 1.5 minutes；
After paint slag is conditioned, paint pulp pump injecting paint residues hydroextractor dehydration, the moisture content of gained Resina Toxicodendri slag is 66.0% left
Right；Paint slag ratio resistance after conditioning is 10.5 × 1011m/Kg。
Embodiment 3:
The paint slag dehydrating and conditioning agent of the present embodiment, its formula comprises: accounts for the phosphatization mud of pending paint slag dry weight 8%, accounts for
The trivalent iron salt of pending paint slag dry weight 1.5%, accounts for the activated silicic acid sodium of pending paint slag dry weight 0.5%, accounts for pending paint slag
The bentonite of dry weight 3%, accounts for the surfactant of pending paint slag dry weight 0.05%, accounts for pending paint slag dry weight 0.05% poly-third
Acrylamide.Wherein, Polysorbate, technical grade；Iron chloride, technical grade；Activated silicic acid sodium is that 1.5mol/L is sulfuric acid modified to be formed；Poly-
Acrylamide, anion, molecular weight 10,000,000, technical grade.
The paint slag of Beijing automobile factory is processed by the paint slag dehydrating and conditioning agent using the present embodiment, and paint slag moisture content is
97.5%, add medicament by above-mentioned dosage, specifically include following steps:
The surfactant accounting for pending paint slag dry weight 0.05%, quickly stirring 4 minutes are added in pending paint slag；It
Rear addition accounts for the trivalent iron salt of pending paint slag dry weight 1.5%, quickly stirring 4 minutes；Add and account for pending paint slag dry weight 8%
Phosphatization mud, quickly stirring 3 minutes；Next add the activated silicic acid sodium accounting for pending paint slag dry weight 0.5% and wait to locate with accounting for
The bentonite of reason paint slag dry weight 3%, low rate mixing 4 minutes；It is eventually adding the polyacrylamide accounting for pending paint slag dry weight 0.05%
Amine, quickly stirring 1 minute；
After paint slag is conditioned, paint pulp pump injecting paint residues hydroextractor dehydration, the moisture content of gained Resina Toxicodendri slag is 61.5% left
Right；Paint slag ratio resistance after conditioning is 7.5 × 1011m/Kg。
Embodiment 4:
The paint slag dehydrating and conditioning agent of the present embodiment, its formula comprises: accounts for the phosphatization mud of pending paint slag dry weight 6%, accounts for
The trivalent iron salt of pending paint slag dry weight 2%, accounts for the activated silicic acid sodium of pending paint slag dry weight 3%, accounts for pending paint slag dry weight
The bentonite of 0.5%, accounts for the surfactant of pending paint slag dry weight 0.04%, accounts for pending paint slag dry weight 0.03% polypropylene
Amide.Wherein, Polysorbate, technical grade；Iron chloride, technical grade；Activated silicic acid sodium is that 1mol/L is sulfuric acid modified to be formed；Polypropylene
Amide, anion, molecular weight 12,000,000, technical grade.
The paint slag of Wuhan automobile factory is processed by the paint slag dehydrating and conditioning agent using the present embodiment, and paint slag moisture content is
92.5%, add medicament by above-mentioned dosage, specifically include following steps:
The surfactant accounting for pending paint slag dry weight 0.04%, quickly stirring 5 minutes are added in pending paint slag；It
Rear addition accounts for the trivalent iron salt of pending paint slag dry weight 2%, quickly stirring 5 minutes；Add and account for pending paint slag dry weight 6%
Phosphatization mud, quickly stirring 4 minutes；Next add and account for the activated silicic acid sodium of pending paint slag dry weight 3% and account for pending paint
The bentonite of slag dry weight 0.5%, low rate mixing 4 minutes；It is eventually adding the polyacrylamide accounting for pending paint slag dry weight 0.03%,
Quickly stirring 1.5 minutes；
After paint slag is conditioned, paint pulp pump injecting paint residues hydroextractor dehydration, the moisture content of gained Resina Toxicodendri slag is 64.5% left
Right；Paint slag ratio resistance after conditioning is 10.0 × 1011m/Kg。
Claims (10)
1. environment-friendly type paint slag dehydrating and conditioning agent, it is characterised in that this conditioner is made up of the component of following weight portion:
Environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 1, it is characterised in that described phosphatization mud is selected from throwing
Add the mud of the phosphorized waste water generation that Calx, ferrous sulfate or polyacrylamide processed.
Environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 1, it is characterised in that described trivalent iron salt is selected from Fe2
(SO4)3、FeCl3Or Fe (NO3)3In one or more.
Environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 1, it is characterised in that the system of described active silicic acid sodium
Preparation Method is: be at room temperature soaked in acid solution by sodium silicate, and after stirring 3h, takes and i.e. obtain active silicic acid sodium；
Ratio 4ml/1g of described acid solution and activated silicic acid sodium, the concentration of described acid solution be 1.0mol/L～
2.0mol/L, described acid solution is selected from sulfuric acid solution.
Environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 1, it is characterised in that described surfactant is selected from
Fatty glyceride, fatty acid Pyrusussuriensis be smooth or one or more in Polysorbate.
Environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 1, it is characterised in that described polyacrylamide is selected from
Molecular weight is the PAMA of 6,000,000-1,200 ten thousand.
7. the application of the environment-friendly type paint slag dehydrating and conditioning agent as described in as arbitrary in claim 1～6, it is characterised in that described ring
Guarantor's type paint slag dehydrating and conditioning agent is used for painting slag dehydration, comprises the following steps:
(1) in pending paint slag, addition accounts for the surfactant of pending paint slag dry weight 0.025%～0.05%, quickly stirs
Mix；
(2) addition accounts for the trivalent iron salt of pending paint slag dry weight 0.5%～2%, quickly stirs；
(3) addition accounts for the phosphatization mud of pending paint slag dry weight 5%～10%, quickly stirs；
(4) add the activated silicic acid sodium accounting for pending paint slag dry weight 0.5%～3% and account for pending paint slag dry weight 0.5%～3%
Bentonite, low rate mixing；
(5) addition accounts for the polyacrylamide of pending paint slag dry weight 0.025%～0.05%, quickly stirs；
(6) conditioned paint slag is carried out filter pressing.
The application of environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 7, it is characterised in that described quick stirring
Rotating speed be 100-220r/min, the rotating speed of low rate mixing is 50-100r/min.
The application of environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 7, it is characterised in that described phosphatization mud
It is that 1%～5% form adds with solid content.
The application of environment-friendly type paint slag dehydrating and conditioning agent the most according to claim 7, it is characterised in that described is pending
Paint slag is the fluidised form paint slag of moisture content more than 85%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610654185.7A CN106110759A (en) | 2016-08-11 | 2016-08-11 | Environment-friendly type paint slag dehydrating and conditioning agent and application thereof |
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Application publication date: 20161116 |