CN102992566B - A kind of method of lignin-sludge - Google Patents
A kind of method of lignin-sludge Download PDFInfo
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- CN102992566B CN102992566B CN201210562237.XA CN201210562237A CN102992566B CN 102992566 B CN102992566 B CN 102992566B CN 201210562237 A CN201210562237 A CN 201210562237A CN 102992566 B CN102992566 B CN 102992566B
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Abstract
The invention provides a kind of method of lignin-sludge, comprise the following steps: catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction; Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component: the FeCl of 0wt% ~ 60wt%
3; The polymerize aluminum chloride of 37wt% ~ 95wt%; The cationic polyacrylamide of 3wt% ~ 10wt%.First pending mud is carried out redox reaction with oxygenant by the present invention under the effect of oxidation guiding catalyzer, again the reaction product obtained is mixed with flocculation agent and carry out coagulation process, the flocculation agent that the present invention adopts is conducive to the deposition of the reaction product small molecular material obtained, make mud flco generation reflocculation, thus increase the volume of mud flco, newly-generated mud flco, due to minimizings such as the protein in mud, polysaccharide, reduces the resistivity of mud.
Description
Technical field
The present invention relates to environmental protection technical field, particularly relate to a kind of method of lignin-sludge.
Background technology
Mud is the organic matter that sewage work produces in sewage treatment process, the residue such as the sedimentable matters such as microbial bacteria micelle and the floating offscum of sewage surface, wherein containing a large amount of pathogenic bacterias, parasite, to cure the disease microorganism, dioxin and arsenic, copper, mercury, the toxic heavy metals such as chromium, radionuclide etc. is even had to be difficult to the poisonous of degraded, objectionable impurities, if arbitrarily throw aside hill farmland or ground lack of standardization landfill, huge potential threat will be caused to ecotope, bag water characteristic inhaled by the colloid of mud simultaneously, also moisture percentage in sewage sludge can be caused high, volume is large, bring difficulty to stacking and transport etc., therefore the mud that treatment plant produces of how properly disposing of sewage further more and more becomes the content of those skilled in the art's research.
Because the bacterium colloidal polymer wetting ability of mud is strong, cause dewatering rate difficult, conventional dehydrated sludge is bulky, and to dispatching from the factory, mud transport brings great difficulty.If town sewage plant specific resistance to filtration is improper or process is disposed lack of standardization, series of environmental problems will be caused.As due to high-moisture percentage, cause a large amount of harmful penetrating fluids during landfill, there will be " blowout " phenomenon time serious, this causes new potential threat by ecotope.Therefore specific resistance to filtration is not only environmental area thorny problem, is also one of current hot subject of field of Environment Protection.At present sanitary landfill is mainly contained to the treatment process of excess sludge, land resources science, thermal treatment, sludge composting, ultrasonic wave clear up sludge etc., for the ease of the transport of mud, storage, stacking and utilization, all required to carry out sludge dewatering before ultimate disposal.Sludge specific resistance is one of important factor affecting specific resistance to filtration technical scheme, the resistance when mud that it is defined as unit mass filters under a certain pressure in unit filtration area.In general, resistivity is less than 1 × 10
11the mud of m/kg is easy to dehydration, is greater than 1 × 10
13the mud of m/kg is difficult to dehydration.Sludge specific resistance is the composite target representing sludge filtration characteristic, and sludge specific resistance is larger, and strainability is poorer.
In order to reduce the resistivity of mud, prior art discloses multiple technologies, as the publication number Chinese patent that is CN102145974A discloses the method for lignin-sludge under a kind of normality, its method for adding oxidation directed agents and conditioning agent CaO in mud, stir, and pass into ozone, then add coagulation agent, finally by sludge press filtration.Although the organic matter in mud can decompose by the method that this patent provides, the mud obtained still has larger resistivity; For another example publication number is a kind of method that the Chinese patent of CN101717174B discloses treating sludge of sewage plant by controllable wet oxidation coagulation method, its method, for add oxidizing initiators in mud, stirs, and passes into oxygenant, then coagulation agent is added, finally by sludge press filtration.This sludge disposal technology is using carbon dust as oxidizing initiators, adds ozone as oxygenant, and its oxidation rupture of membranes poor effect, the resistivity of the mud obtained still is unfavorable for the carrying out of follow-up dehydration.
Summary of the invention
The object of the present invention is to provide a kind of method of lignin-sludge, adopt the mud after method process provided by the invention to have lower resistivity, make the mud after processing be easy to dehydration.
The invention provides a kind of method of lignin-sludge, comprise the following steps:
Catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction;
Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component:
The FeCl of 0wt% ~ 60wt%
3;
The polymerize aluminum chloride of 37wt% ~ 95wt%;
The cationic polyacrylamide of 3wt%10wt%.
Preferably, described flocculation agent comprises the FeCl of 5wt% ~ 55wt%
3.
Preferably, described flocculation agent comprises the polymerize aluminum chloride of 45wt% ~ 90wt%.
Preferably, described flocculation agent comprises the cationic polyacrylamide of 3wt% ~ 8wt%.
Preferably, the mass ratio of the butt of described flocculation agent and described pending mud is (0.05% ~ 5%): 1.
Preferably, described oxidation guiding catalyzer comprises following component:
The metallic compound of 5wt% ~ 45wt%;
The sorbent material of 55wt% ~ 95wt%.
Preferably, described metallic compound is one or both in metal-salt and metal oxide.
Preferably, the metal in described metallic compound is one or several in Fe, Mn, Al, V and Ti.
Preferably, described sorbent material is one or more in carbon class sorbent material, sepiolite powder, diatomite, colliery powder, flyash, perlite powder, bentonite in powder, volcano ashes and kaolin.
Preferably, the mass ratio of the butt of described oxidation guiding catalyzer and described pending mud is (3% ~ 8%): 1.
Preferably, described oxygenant is hydrogen peroxide or ozone.
The invention provides a kind of method of lignin-sludge, comprise the following steps: catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction; Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component: the FeCl of 0wt% ~ 60wt%
3; The polymerize aluminum chloride of 37wt% ~ 95wt%; The cationic polyacrylamide of 3wt% ~ 10wt%.First pending mud is carried out redox reaction with oxygenant by the present invention under the effect of oxidation guiding catalyzer, then the reaction product obtained mixed with flocculation agent and carry out coagulation process, the flocculation agent that the present invention adopts comprises following component: the FeCl of 0wt% ~ 60wt%
3, the polymerize aluminum chloride of 37wt% ~ 95wt% and the cationic polyacrylamide of 3wt%10wt%, this flocculation agent is conducive to the small-molecule substance deposition in the redox reaction product obtained, flocculation agent makes mud flco generation reflocculation, thus increase the volume of mud flco, newly-generated mud flco is due to minimizings such as the protein in mud, polysaccharide, reduce the resistivity of mud, be beneficial to the carrying out of the follow-up dewatering process of mud.Experimental result shows, the resistivity of the mud adopting method provided by the invention to obtain is 0.10 × 10
12m/kg ~ 0.4 × 10
12m/kg.
Embodiment
The invention provides a kind of method of lignin-sludge, comprise the following steps:
Catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction;
Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component:
The FeCl of 0wt% ~ 60wt%
3;
The polymerize aluminum chloride of 37wt% ~ 95wt%;
The cationic polyacrylamide of 3wt%10wt%.
First pending mud react with oxygenant by method provided by the invention under the effect of oxidation guiding catalyzer, then the reaction product obtained mixed with flocculation agent and carry out coagulation process, complete the treating processes to mud.The flocculation agent that the present invention adopts comprises following component: the FeCl of 0wt% ~ 60wt%
3; The polymerize aluminum chloride of 37wt% ~ 95wt%; The cationic polyacrylamide of 3wt% ~ 10wt%.The flocculation agent that the present invention adopts is conducive to the deposition of reaction product small molecular material, reduces the resistivity of the mud obtained, is conducive to the carrying out of follow-up dewatering process.
First pending mud and oxidation are led catalyzer and oxygenant of the present invention mixes, and carries out redox reaction.The source of the present invention to described pending mud does not have special restriction, adopts mud well known to those skilled in the art.As, method provided by the invention can process excess sludge, also can be used for processing mud.In the present invention, described excess sludge is the mud that sewage produces through process, and comprising scum silica frost, microorganism cenobium, is the secondary product after Sewage Plant biochemical wastewater treatment; The mud that described mud is lake, channel deposit obtains;
The present invention does not have special restriction to described pending mud and oxygenant with the order of addition(of ingredients) be oxidized when leading catalyst mix, adopts order of addition(of ingredients) well known to those skilled in the art.First the present invention preferably adds oxidation guiding catalyzer in pending mud, then adds oxygenant wherein under the condition stirred, and carries out redox reaction.In the present invention, described oxidation guiding catalyzer comprises following component:
The metallic compound of 5wt% ~ 45wt%;
The sorbent material of 55wt% ~ 95wt%.
In the present invention, described oxidation guiding catalyzer preferably includes the metallic compound into 5wt% ~ 45wt%, is more preferably 10wt% ~ 30wt%, most preferably is 15wt% ~ 25wt%, be the most preferably 18wt% ~ 22wt%.In the present invention, described metallic compound is one or both in metal-salt and metal oxide; In the present invention, described metal-salt can be the inorganic salt of metal, also can be the organic salt of metal, be preferably in metal formate, metal acetate, metal chloride salt, metal sulfate and metal nitrate one or more, be more preferably in metal formate, metal acetate and metal chloride salt one or more; Metal in described metallic compound be preferably in Fe, Mn, Al, V and Ti one or several, be more preferably in Fe, Al, Ti and V one or more, most preferably be in Fe, Ti and Al one or more;
In the present invention, described metal-salt solidification effect is good, its hydroxyl radical free radical that can generate with ozone reaction, the hydroxyl radical free radical obtained makes Organic Sludge microbial film and cellularstructure generation redox processes, break membrane structure, generate micromolecular organic matter, and the chemical bonds such as-NH of organic matter ,-SH ,-OH are easy to the heavy metal ion Cd with excess sludge surface
2+, Cu
2+, Zn
2+, Pb
2+, Ni
2+, Cr
3+, AsO
+plasma forms inner complex, is wrapped in dewatered sludge, thus can improves the environmental protection to sludge treatment after mechanical mummification press filtration heavy metal ion;
In the present invention, described oxidation guiding catalyzer preferably includes the sorbent material of 55wt% ~ 95wt%, is more preferably 70wt% ~ 90wt%, most preferably is 75wt% ~ 85wt%, be the most preferably 78wt% ~ 82wt%.In the present invention, sorbent material has large specific surface, suitable pore structure and surface tissue, and have strong adsorptive power to adsorbate, be conducive to the transfer transport at interface, form the hydroxy radical qiao to mud micella oxidation rupture of membranes, and sorbent material general not with adsorbate and medium generation chemical reaction; Easily manufactured, regenerating easily; There is good physical strength etc.Therefore, in the present invention, sorbent material can obtain the oxygenant of high-energy state in gas or liquid effectively, completes solidification, the Charge transfer on interface of solid-liquid interface, realizes the micella rupture of membranes to mud, and release parcel water becomes flow clearance water.Improve the efficiency to the process mummification of mud.In the present invention, described sorbent material be preferably in carbon class sorbent material, sepiolite powder, diatomite, colliery powder, flyash, perlite powder, bentonite in powder, volcano ashes and kaolin one or several, be more preferably in carbon dust, charcoal, gac, flyash, diatomite, perlite powder, kaolin one or more, most preferably be in carbon dust, gac, flyash one or more; The order number of the granularity of described sorbent material is preferably more than 100 orders, is more preferably more than 150 orders.Carbon dust class sorbent material, its loading capacity is larger, to the absorption property Be very effective of solid particulate matter in mud.Wherein, activity charcoal powder is the meal made after charing, activation by the carbon raw materials such as charcoal, shell, coal, and activity charcoal powder contains a lot of pore structure, and it has excellent adsorptive power, dimension adopts activity charcoal powder as the sorbent material more remarkable effect of sludge treatment, and water separation capability is stronger.And when adopting multiple sorbent material to lead as oxidation the component of catalyzer simultaneously, can the performance of balanced various sorbent material, make comprehensive absorption property better.
The preparation method of the present invention to described oxidation guiding catalyzer does not have special restriction, adopts technical scheme prepared by composition well known to those skilled in the art, after said components preferably mixes by the present invention, can obtain oxidation guiding catalyzer.
After obtaining oxidation guiding catalyzer, described oxidation guiding catalyzer preferentially joins in pending mud by the present invention, the add-on of described oxidation guiding catalyzer is different according to the kind difference of pending mud, in the present invention, described pending mud is preferably excess sludge or mud.When described pending mud is excess sludge, in described oxidation guiding catalyzer and described excess sludge, the mass ratio of butt is (3% ~ 8%): 1, is more preferably (4% ~ 7%): 1; When described pending mud is mud, in described oxidation guiding catalyzer and described mud, the mass ratio of butt is (0.1% ~ 0.5%): 1, is more preferably (0.2% ~ 0.4%): 1; In the present invention, described butt is the solid matter that drying sludge to constant weight obtains, the solid matter that constant weight obtains is dried under being preferably the temperature of 103 DEG C ~ 105 DEG C, the equipment of the present invention to described drying does not have special restriction, baking oven adopts drying plant well known to those skilled in the art, as can be adopted;
Obtain pending mud with oxidation lead catalyzer mixture after, the present invention preferably stirring condition under add oxygenant wherein, carry out redox reaction.In the present invention, described oxygenant is preferably hydrogen peroxide or ozone, is more preferably hydrogen peroxide or ozone.The mass concentration of the present invention to described hydrogen peroxide does not have special restriction, adopts the hydrogen peroxide as oxygenant well known to those skilled in the art; The source of the present invention to described ozone does not have special restriction, adopts the technical scheme preparing ozone well known to those skilled in the art, as ozonizer can be adopted to prepare ozone required for the present invention; The present invention does not have special restriction to described ozonizer, adopts ozonizer well known to those skilled in the art;
In the present invention, the mass concentration of described hydrogen peroxide is preferably 30% ~ 60%, is more preferably 35% ~ 55%; The mass ratio that described oxygenant accounts for butt in described pending mud is preferably (0.1 ~ 1.0) g/kg, is more preferably (0.1 ~ 0.5) g/kg; The method of the present invention to described stirring does not have special restriction, adopts the technical scheme of stirring well known to those skilled in the art; In the present invention, the temperature of described oxidizing reaction is preferably room temperature; The time of described oxidizing reaction is different according to the quality difference of pending mud, the quality of pending mud is more, the time of oxidizing reaction also will extend thereupon, oxidizing reaction is carried out more completely and thoroughly, the present invention does not have special restriction to this, adopt time-align technique scheme well known to those skilled in the art.
After completing above-mentioned redox reaction, the product of the redox reaction obtained mixes with flocculation agent by the present invention, carries out coagulation reaction, and in the present invention, described flocculation agent comprises following component:
The FeCl of 0wt% ~ 60wt%
3;
The polymerize aluminum chloride of 37wt% ~ 95wt%;
The cationic polyacrylamide of 3wt%10wt%.
The flocculation agent that the present invention adopts comprises the FeCl of 0wt% ~ 60wt%
3, be preferably 5wt% ~ 55wt%, be more preferably 10wt% ~ 50wt%; Described flocculation agent comprises the polymerize aluminum chloride (PAC) of 37wt% ~ 95wt%, is preferably 45wt% ~ 90wt%, is more preferably 50wt% ~ 80wt%; Described flocculation agent comprises the cationic polyacrylamide (CPAM) of 3wt% ~ 10wt%, is preferably 5wt% ~ 8wt%; The flocculation agent that the present invention adopts can react by the small-molecule substance better and in reaction product, produces inner complex, the small-molecule substance in mud is settled down, reduces the resistivity of mud, be conducive to the carrying out of follow-up dehydration.
In the present invention, the butt mass ratio of described flocculation agent and described pending mud is preferably (0.05% ~ 5%): 1, is more preferably (0.075% ~ 4%): 1;
The present invention does not have special restriction to the temperature that described flocculation agent mixes with the oxidation reaction product of pending mud, preferably at room temperature carries out.The present invention preferably stirs when being mixed with flocculation agent by the oxidation reaction product of pending mud, and the method for the present invention to described stirring does not have special restriction, adopts the technical scheme of stirring well known to those skilled in the art.
After obtaining the mixture of redox reaction product and flocculation agent, the mixture obtained is carried out heavy process of wadding a quilt with cotton by the present invention, the present invention to described wadding sink process method there is no special restriction, the mixture obtained after adding flocculation agent is stirred, flocculation agent and redox reaction product are fully reacted, accelerate settling velocity and the sinkability of mud, flocculation agent makes mud flco generation reflocculation, thus increase the volume of mud flco, newly-generated mud flco due to minimizings such as the protein in mud, polysaccharide, so resistivity obviously reduces; In addition, the increase of newly-generated mud flco particle diameter, can cause flco more easily broken, thus more be conducive to the filtration in later stage.
The invention provides a kind of method of lignin-sludge, comprise the following steps: catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction; Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component: the FeCl of 0wt% ~ 60wt%
3; The polymerize aluminum chloride of 37wt% ~ 95wt%; The cationic polyacrylamide of 3wt% ~ 10wt%.First pending mud is carried out redox reaction with oxygenant by the present invention under the effect of oxidation guiding catalyzer, then the reaction product obtained mixed with flocculation agent and carry out coagulation process, the flocculation agent that the present invention adopts comprises following component: the FeCl of 0wt% ~ 60wt%
3, the polymerize aluminum chloride of 37wt% ~ 95wt% and the cationic polyacrylamide of 3wt%10wt%, the flocculation agent that the present invention adopts is conducive to the small-molecule substance deposition in the redox reaction product obtained, flocculation agent makes mud flco generation reflocculation, thus increase the volume of mud flco, newly-generated mud flco discharges parcel water due to organic micellas such as the protein in mud, polysaccharide after rupture of membranes, hard-packed mud polymkeric substance is formed in coagulation flocculation, reduce the resistivity of mud, be beneficial to the carrying out of the follow-up dewatering process of mud.Experimental result shows, the resistivity of the mud adopting method provided by the invention to obtain is 0.10 × 10
12m/kg ~ 0.4 × 10
12m/kg.Be conducive to follow-up press filtration under normality (0.6MPa ~ 0.8MPa), 1.5MPa squeezing obtains dewatered sludge water ratio less than 50%.
In order to further illustrate the present invention, being described in detail below in conjunction with the method for embodiment to lignin-sludge provided by the invention, but they can not being interpreted as limiting the scope of the present invention.
Excess sludge is from the secondary product after Sewage Plant biochemical wastewater treatment in the examples below; Mud is lake or shouts the mud depositing and obtain.
Embodiment 1
By mass ratio be 80:20 by carbon dust and FeCl
3mixing, obtains oxidation guiding catalyzer after mixing;
To containing adding the oxidation guiding catalyzer that 50g the present embodiment obtains in the excess sludge of 1.0kg butt, after stirring, then passing into 0.5g ozone wherein, carrying out redox reaction; The FeCl that 0.5g contains 45wt% is added in the redox reaction product obtained
3, 45wt% the flocculation agent of CPAM of PAC and 10wt%, it is heavy fully to carry out wadding after mixing, obtains solid matter and filtrate through press filtration.
The present invention detect obtain through the heavy resistivity obtaining mud of wadding a quilt with cotton be 0.080 × 10
12m/kg ~ 1.0 × 10
12m/kg;
It is 6.5 that the present invention detects the pH value obtaining filtrate.
Embodiment 2
Be the mixing of the activated carbon powder of 30:35:10:15, flyash, ironic formiate and al formate by mass ratio, mix and obtain oxidation guiding catalyzer;
To containing adding oxidation guiding catalyzer prepared by 0.35kg the present embodiment in the excess sludge of 10kg butt, after stirring, then passing into 3.5g ozone wherein, carrying out redox reaction; The FeCl that 10g contains 50wt% is added in the redox reaction product obtained
3, 45wt% the flocculation agent of CPAM of PAC and 5wt%, it is heavy fully to carry out wadding after mixing, obtains solid matter and filtrate through press filtration.
The present invention detect obtain through the heavy resistivity obtaining mud of wadding a quilt with cotton be 0.090 × 10
12m/kg ~ 1.2 × 10
12m/kg;
It is 6.8 that the present invention detects the pH value obtaining filtrate.
Embodiment 3
Be 82:7:7 carbon dust, FeCl by mass ratio
3with ironic acetate mixing, after mixing, obtain oxidation guiding catalyzer;
To containing adding oxidation guiding catalyzer prepared by 3.25kg the present embodiment in the excess sludge of 50kg butt, after stirring, then passing into 22.5g ozone wherein, carrying out redox reaction; Then in the redox reaction product obtained, add the FeCl that 1kg contains 55wt%
3, 35wt% the flocculation agent of CPAM of PAC and 10wt%, it is heavy fully to carry out wadding after mixing, obtains solid matter and filtrate through press filtration.
The present invention detects and obtains the heavy resistivity obtaining mud of wadding is 0.075 × 10
12m/kg ~ 1.05 × 10
12m/kg;
It is 6.5 that the present invention detects the pH value obtaining filtrate.
Embodiment 4
Be gac and the FeCl of 85:15 by mass ratio
3mixing, obtains oxidation guiding catalyzer after mixing;
To containing adding oxidation guiding catalyzer prepared by 6kg the present embodiment in the excess sludge of 80kg, after stirring, then passing into 60g ozone wherein, carrying out redox reaction; Then in the redox reaction product obtained, add the flocculation agent that 3kg contains the CPAM of PAC and 20wt% of FeCl3,35wt% of 45wt%, fully heavy process of wadding a quilt with cotton is carried out in mixing, obtains solid matter and filtrate through press filtration.
The present invention detect obtain through the heavy resistivity obtaining mud of wadding a quilt with cotton be 0.1 × 10
12m/kg ~ 0.4 × 10
12m/kg;
It is 7.0 that the present invention detects the pH value obtaining filtrate.
Embodiment 5
Be carbon dust and the FeCl of 78:22 by mass ratio
3mixing, obtains oxidation guiding catalyzer after mixing;
To containing adding the oxidation guiding catalyzer that 0.3kg the present embodiment obtains in the mud of 100kg butt, after stirring, then passing into 50g ozone wherein, carrying out redox reaction; Then in the redox reaction product obtained, add the FeCl of 1.2kg containing 45wt%
3, 45wt% the flocculation agent of CPAM of PAC and 10wt%, heavy process of wadding a quilt with cotton is carried out in mixing, obtains solid matter and filtrate through press filtration.
The present invention detect obtain through the heavy resistivity obtaining mud of wadding a quilt with cotton be 0.080 × 10
12m/kg ~ 1.5 × 10
12the mud of m/kg;
It is 7.5 that the present invention detects the pH value obtaining filtrate.
Embodiment 6
Be the mixing of the property powdered carbon of 40:40:10:10, flyash, ironic formiate and al formate by mass ratio, after mixing, obtain oxidation guiding catalyzer;
To containing adding the oxidation guiding catalyzer that 0.3kg the present embodiment obtains in the mud of 60kg butt, after stirring, then passing into 48g ozone wherein, carrying out redox reaction; Then in the product of the redox reaction obtained, add the FeCl that 0.5kg contains 55wt%
3, 40wt% the flocculation agent of CPAM of PAC and 5wt%, fully heavy process of wadding a quilt with cotton is carried out in mixing, obtains solid matter and filtrate through press filtration.
The present invention detect obtain through the heavy resistivity obtaining mud of wadding a quilt with cotton be 0.100 × 10
12m/kg ~ 1.35 × 10
12m/kg;
It is 7.8 that the present invention detects the pH value obtaining filtrate.
Embodiment 7
Be carbon dust and the FeCl of 85:15 by mass ratio
3mixing, obtains oxidation guiding catalyzer after mixing;
To containing adding the oxidation guiding catalyzer that 0.09kg the present embodiment obtains in the mud of 90kg butt, passing into 9g ozone wherein again after stirring, carrying out redox reaction; Then in the redox reaction product obtained, add the FeCl that 0.8kg contains 45wt%
3, 40wt% the flocculation agent of CPAM of PAC and 15wt%, fully heavy process of wadding a quilt with cotton is carried out in mixing, obtains solid matter and filtrate through press filtration.
The present invention detect obtain through the heavy resistivity obtaining mud of wadding a quilt with cotton be 0.065 × 10
12m/kg ~ 1.55 × 10
12m/kg;
It is 7.6 that the present invention detects the pH value obtaining filtrate.
The invention provides a kind of method of lignin-sludge, comprise the following steps: catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction; Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component: the FeCl of 0wt% ~ 60wt%
3; The polymerize aluminum chloride of 37wt% ~ 95wt%; The cationic polyacrylamide of 3wt% ~ 10wt%.First pending mud is carried out redox reaction with oxygenant by the present invention under the effect of oxidation guiding catalyzer, then the reaction product obtained mixed with flocculation agent and carry out coagulation process, the flocculation agent that the present invention adopts comprises following component: the FeCl of 0wt% ~ 60wt%
3, the polymerize aluminum chloride of 37wt% ~ 95wt% and the cationic polyacrylamide of 3wt%10wt%, the flocculation agent that the present invention adopts is conducive to the small-molecule substance deposition in the redox reaction product obtained, flocculation agent makes mud flco generation reflocculation, thus increase the volume of mud flco, newly-generated mud flco is due to close structure after the dehydrations such as the protein in mud, polysaccharide, reduce the resistivity of mud, be beneficial to the carrying out of the follow-up dewatering process of mud.Experimental result shows, the resistivity of the mud adopting method provided by the invention to obtain is 0.10 × 10
12m/kg ~ 0.4 × 10
12m/kg.
Above the continous treatment process of a kind of mud provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (2)
1. a method for lignin-sludge, is made up of following steps:
Catalyzer and the oxygenant of pending mud and oxidation being led mixes, and carries out redox reaction; Described oxidation guiding catalyzer is composed of the following components:
The metallic compound of 5 wt% ~ 45 wt%;
The sorbent material of 55 wt% ~ 95 wt%;
Described metallic compound is one or both in metal-salt and metal oxide;
Described metal-salt is one or more in metal formate, metal acetate and metal nitrate; The mass ratio of the butt of described oxidation guiding catalyzer and described pending mud is (3% ~ 8%): 1;
Described oxygenant is hydrogen peroxide or ozone; Described sorbent material is one or more in sepiolite powder, diatomite, colliery powder, flyash, perlite powder, bentonite in powder, volcano ashes and kaolin;
Mixed with flocculation agent by the product of described redox reaction, carry out coagulation process, described flocculation agent comprises following component:
The FeCl of 10 wt% ~ 50 wt%
3;
The polymerize aluminum chloride of 45 wt% ~ 90 wt%;
The cationic polyacrylamide of 3 wt% ~ 10 wt%;
In described flocculation agent, each component concentration percentage ratio sum is 100 %.
2. method according to claim 1, is characterized in that, the metal in described metallic compound is one or several in Fe, Mn, Al, V and Ti.
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| CN102992567B (en) * | 2012-12-21 | 2015-08-26 | 湖南清和环保技术有限公司 | A kind of method of lignin-sludge |
| CN103332849A (en) * | 2013-07-19 | 2013-10-02 | 江苏康泰环保设备有限公司 | Novel sludge deep dehydration rinsing agent |
| CN103771681B (en) * | 2014-02-26 | 2016-03-23 | 中国制浆造纸研究院 | A kind ofly extract reuse paper waste biochemical sludge nitrogen phosphorus and realize the method for sludge dewatering |
| CN103951023B (en) * | 2014-04-18 | 2016-04-20 | 包头轻工职业技术学院 | Compound sewage treatment agent |
| CN104355524B (en) * | 2014-10-14 | 2016-04-06 | 广东金泥华牛科技有限公司 | A kind for the treatment of process of deeply dehydrating sludge |
| CN105731760A (en) * | 2016-01-29 | 2016-07-06 | 长沙学院 | Modified diatomite and preparation method thereof, sludge conditioner and sludge treatment method |
| CN109219580B (en) * | 2016-06-08 | 2020-12-22 | 三菱电机株式会社 | Sludge treatment device and sludge treatment method |
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| CN108892354A (en) * | 2018-08-01 | 2018-11-27 | 成都诺德源环保科技有限公司 | A kind of method of municipal sludge dehydration |
| CN108892355A (en) * | 2018-08-01 | 2018-11-27 | 成都诺德源环保科技有限公司 | A kind of method of municipal sludge harmless treatment |
| CN110183092A (en) * | 2019-04-10 | 2019-08-30 | 北京中持净水材料技术有限公司 | A kind of efficient anaerobic digested sludge deep dehydration conditioner and its application method |
| CN110117149A (en) * | 2019-05-14 | 2019-08-13 | 浙江工业大学 | A kind of Opsonizing method of catalysis oxidation type sludge conditioner and sludge |
| CN111116705B (en) * | 2019-12-24 | 2020-11-27 | 同济大学 | Method for extracting protein from sludge by ozone treatment |
| CN113045161A (en) * | 2021-02-20 | 2021-06-29 | 谭忠冠 | Deep dehydration method for sludge |
| CN114262131A (en) * | 2021-12-13 | 2022-04-01 | 江苏旺佳环保工程设备有限公司 | Sludge treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102145974A (en) * | 2010-02-05 | 2011-08-10 | 湖南湘牛污泥深度处理有限公司 | Method and equipment for treating sludge in normal state |
| CN102992567A (en) * | 2012-12-21 | 2013-03-27 | 湖南清和污泥资源利用有限公司 | Method for disposing sludge |
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| CN102725237A (en) * | 2009-08-30 | 2012-10-10 | 工业研究与发展基金会有限公司 | Method and system for treating sewage sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102145974A (en) * | 2010-02-05 | 2011-08-10 | 湖南湘牛污泥深度处理有限公司 | Method and equipment for treating sludge in normal state |
| CN102992567A (en) * | 2012-12-21 | 2013-03-27 | 湖南清和污泥资源利用有限公司 | Method for disposing sludge |
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