CN103880265B - A kind of method for processing sludge - Google Patents
A kind of method for processing sludge Download PDFInfo
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- CN103880265B CN103880265B CN201210562724.6A CN201210562724A CN103880265B CN 103880265 B CN103880265 B CN 103880265B CN 201210562724 A CN201210562724 A CN 201210562724A CN 103880265 B CN103880265 B CN 103880265B
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Abstract
The invention provides a kind of method for processing sludge, comprises the following steps：a）Pending sludge is oriented to catalyst with oxidant and oxidation to mix, is reacted, the oxidation is oriented to catalyst includes following components：The metallic compound of 5wt% ~ 45wt%；The adsorbent of 55wt% ~ 95wt%；b）By step a）The product for obtaining is filtered after being mixed with coagulation agent.Pending sludge is oriented to catalyst with oxidant and oxidation and carries out oxidation reaction by the present invention first, then is filtered after the product for obtaining is mixed with coagulation agent, completes the process to sludge.The method that the present invention is provided is using hydrogen peroxide or ozone as oxidant, and add oxidation guiding catalyst, be conducive to the rupture of membranes of microorganism extracellular polymeric and decomposition in sludge, so as to reduce the content of reducing substanceses in sludge, so that the COD of the sludge after processing reduces.
Description
Technical field
The present invention relates to technical field of sludge treatment, more specifically, more particularly to a kind of method for processing sludge.
Background technology
Sewage, can the substantial amounts of excess sludge of output through processing.It is biochemical wastewater treatment that the process of excess sludge is disposed
A great problem.Sewage Plant sewage second-level biochemical treatment ultimate principle be microorganism using dirty Organic substance in water as itself metabolism
Nutrient substance, decomposed, be converted into CO2、H2O and metabolic secretion thing.The residual secretion produced through bacteria metabolism
Thing is formed surplus mud, and surplus mud and scum silica frost in sewage and microbial bacteria group have been polymerized sewage plant excess sludge,
It is the secondary product after Sewage Plant biochemical wastewater treatment, also becomes cities and towns solid waste.
It is well known that containing the harmful microorganism body such as substantial amounts of pathogenic bacteria body, parasitic ovum in sludge, also containing a large amount of arsenic,
The carcinogenecity material such as the toxic heavy metals such as copper, hydrargyrum, chromium and two English.As the bacterium colloidal polymer hydrophilic of sludge is strong, cause
Dewatering rate is difficult, and conventional dehydrated sludge is bulky, provides factory's sludge transport and brings great difficulty.If town sewage plant
Specific resistance to filtration is improper or process disposal is lack of standardization, it will cause series of environmental problems.Such as due to high-moisture percentage, landfill
When cause substantial amounts of harmful penetrating fluid, " blowout " phenomenon occurs when serious, this will cause new potential threat to ecological environment.
One of therefore specific resistance to filtration is not only one thorny problem of environmental area, and the current hot subject of field of Environment Protection.At present
Mainly there are sanitary landfills, land resources science, heat treatment, sludge composting, ultrasound wave to clear up dirt the processing method of excess sludge
Mud method etc..
Prior art discloses the processing method of multiple excess sludges, the such as China of Application No. 201019060003.3 specially
Profit discloses a kind of method for processing sludge under normality, and its method is in sludge to add oxidation directed agents and regulator CaO, stirs
Mix, and be passed through ozone, be subsequently adding coagulation agent, finally by sludge press filtration.CaO, CaO is added to be formed in water in the prior art
Ca(OH)2, there is provided OH-, O3+OH-→O2+HO2, O3+O2→O3+O2, O3+H+→HO3→OH+O2, OH-There is strong oxidizing property, can be with
To microorganism extracellular polymeric（EPS）Carry out oxidation rupture of membranes.However, the sludge after the method disclosed in the patent is processed still has
Higher COD, is directly discharged in environment to increase environmental pollution.
Content of the invention
It is an object of the invention to provide a kind of method for processing sludge, after the method that the present invention is provided is by Treatment of Sludge,
The COD in sludge is reduced, beneficial to environmental protection.
The invention provides a kind of method for processing sludge, comprises the following steps：
a）Pending sludge is oriented to catalyst with oxidant and oxidation to mix, is reacted, the oxidation guiding is urged
Agent includes following components：
The metallic compound of 5wt% ~ 45wt%；
The adsorbent of 55wt% ~ 95wt%；
b）By step a）The product for obtaining is filtered after being mixed with coagulation agent.
Preferably, the mass fraction that the oxidant accounts for the butt of the pending mud is（0.1~1.0）g/kg.
Preferably, the mass fraction that the oxidant accounts for the butt of the pending mud is（0.1~0.5）g/kg.
Preferably, the oxidant is hydrogen peroxide or ozone.
Preferably, the oxidation is oriented to catalyst includes following components：
The metallic compound of 10wt% ~ 30wt%；
The adsorbent of 70wt% ~ 90wt%.
Preferably, the metal in the metallic compound includes one or more in Fe, Mn, Al, V and Ti.
Preferably, the metallic compound is one or two in slaine and metal-oxide.
Preferably, the slaine is metal formate, metal acetate, metal chloride, metal sulfate and metal
One or more in nitrate.
Preferably, the adsorbent is carbons adsorbent, sepiolite powder, kieselguhr, colliery powder, flyash, perlite
One or more in powder, bentonite in powder, volcano ashes and Kaolin.
Preferably, the oxidation guiding catalyst with the mass ratio of the butt of the pending mud is（3%~8%）:1.
Preferably, the coagulation agent includes following components：
The FeCl of 0wt% ~ 60wt%3；
The aluminium polychlorid of 37wt% ~ 95wt%；
The PAMC of 3wt%10wt%.
The invention provides a kind of method for processing sludge, comprises the following steps：a）By pending sludge and oxidant
Catalyst mixing is oriented to oxidation, is reacted, the oxidation is oriented to catalyst includes following components：The metal of 5wt% ~ 45wt%
Compound；The adsorbent of 55wt% ~ 95wt%；b）By step a）The product for obtaining was carried out after being mixed with coagulation agent
Filter.Pending sludge is oriented to catalyst with oxidant and oxidation and carries out oxidation reaction by the present invention first, then anti-by obtained
Answer product to be filtered after mixing with coagulation agent, complete the process to sludge.The method that the present invention is provided using hydrogen peroxide or
Ozone is used as oxidant, and adds oxidation guiding catalyst, and the oxidation that the present invention is adopted is oriented to catalyst includes metal compound
Thing, can promote oxidant to produce hydroxyl radical free radical, promote the decomposition of organic matter in sludge；And the oxidation that the present invention is adopted is led
Under conditions of existing without acid-base modifier, oxidation reaction is carried out to catalyst such that it is able to be conducive to micro- in sludge
The rupture of membranes of biological extracellular polymeric and decomposition, so as to reduce the content of reducing substanceses in sludge, so that after processing
The COD of sludge reduces.Test result indicate that, the chemistry of the sludge after the process that the method that the present invention is provided is obtained is needed
Oxygen amount is less than 150mg/L.
In addition, the method that the present invention is provided adds oxidation in oxidizing process is oriented to catalyst so that the dehydration of sludge
Rate is higher；And, the method that the present invention is provided causes that sludge increment is little, be conducive to subsequent treatment.
Specific embodiment
The invention provides a kind of method for processing sludge, comprises the following steps：
a）Pending sludge is oriented to catalyst with oxidant and oxidation to mix, is reacted, the oxidation guiding is urged
Agent includes following components：
The metallic compound of 5wt% ~ 45wt%；
The adsorbent of 55wt% ~ 95wt%；
b）By step a）The product for obtaining is filtered after being mixed with coagulation agent.
The present inventor's research finds：Method disclosed in the Chinese patent of Application No. 20101906003.3, is being aoxidized
CaO is added during reduction reaction in reaction system, and the formation impact on hydroxyl radical free radical is limited, but fast on EPS surfaces
There is fixed reaction in speed, form a tunic on EPS surfaces, prevent rupture of membranes and the decomposition of EPS.Two kinds affect positive and negative offset, not
There is promotion rupture of membranes oxidation, so not playing a role to organic matter degradation, cause COD value higher；And after adding CaO, sludge
PH can increase（Water becomes alkalescence, has pollution）, COD can also increase, and pollution increases.
The present invention provides a kind of method for processing sludge, and pending sludge is oriented to catalysis with oxidant and oxidation first
Agent mixing carries out oxidation reaction；Then filtered after mixed the product for obtaining with coagulation agent.The side that the present invention is provided
Method adds oxidation during oxidation reaction is carried out and is oriented to catalyst, and the oxidation is oriented to catalyst includes metallic compound
And adsorbent so that oxidation reaction can be successfully carried out in the case of without acid-base modifier, would not be in microorganism
Extracellular polymeric surface forms protecting film, so that oxidant smoothly can be reacted with microorganism extracellular polymeric.This
The method that invention is provided is conducive to rupture of membranes and the decomposition of microorganism extracellular polymeric, so as to reduce the reproducibility thing in sludge
Matter so that the COD of sludge reduces after process.
Pending sludge is oriented to catalyst with oxidant and oxidation and is mixed by the present invention first, is reacted.The present invention
There is no special restriction to the source of the pending sludge, using sludge well known to those skilled in the art.Such as, originally
The method that invention is provided can process excess sludge, it is also possible to for processing mud.In the present invention, the excess sludge is dirt
Water, through processing the sludge for producing, including scum silica frost, microorganism cenobium, is the secondary product after Sewage Plant biochemical wastewater treatment；Institute
The sludge that mud is obtained is stated for lake, channel deposit；
In the present invention, pending sludge carries out oxidation reaction with oxidant in the presence of oxidation is oriented to catalyst,
Be conducive to microorganism extracellular polymeric（EPS）Rupture of membranes and decomposition, after the organic matter decomposition in EPS, reduce in sludge reduce
The content of material, so that reduce the COD of sludge after process（COD）.In the present invention, microorganism extracellular polymeric
（EPS）It is the main comprise material of excess sludge.Excess sludge flco is mainly by microorganism extracellular polymeric（EPS）Parcel is simultaneously
The extremely complex material of the composition that connects into.EPS is mainly made up of polysaccharide and protein, negatively charged, High water cut；Chemical oxygen demand
Amount（COD）, it is the oxidant content for being consumed under certain conditions, when processing water sample using certain strong oxidizer.It is table
Show a how many index of reducing substanceses in water.Reducing substanceses in water have various Organic substances, nitrite, sulfide,
Ferrous salt etc..But importantly Organic substance.Therefore, again often how many as Organic substance in water matter content the is weighed indexs of COD.Change
Oxygen demand is bigger, illustrates that water body is more serious by the pollution of Organic substance.
In the present invention, the oxidant is preferably hydrogen peroxide or ozone, more preferably hydrogen peroxide or ozone.The present invention
There is no special restriction to the mass concentration of the hydrogen peroxide, using the dioxygen as oxidant well known to those skilled in the art
Water；The present invention does not have special restriction to the source of the ozone, prepares ozone using well known to those skilled in the art
Technical scheme, the ozone as needed for can prepare the present invention using ozonator；The present invention is to described smelly
Oxygen Generator does not have special restriction, using ozonator well known to those skilled in the art；
In the present invention, the mass concentration of the hydrogen peroxide is preferably 30% ~ 60%, more preferably 35% ~ 55%；The oxidation
Agent accounts for the mass ratio of butt in the pending sludge and is preferably（0.1~1.0）G/kg, more preferably（0.1~0.5）g/kg；
In the present invention, the butt is the solid matter that drying sludge to constant weight is obtained, and does at a temperature of preferably 103 DEG C ~ 105 DEG C
The dry solid matter obtained to constant weight, the present invention do not have special restriction to the equipment of the drying, using people in the art
Drying equipment known to member, can such as adopt baking oven；
In the present invention, the oxidation is oriented to catalyst includes following components：
The metallic compound of 5wt% ~ 45wt%；
The adsorbent of 55wt% ~ 95wt%.
In the present invention, the oxidation is oriented to catalyst includes the metallic compound of 5wt% ~ 45wt%, preferably 10wt% ~
30wt%, more preferably 15wt% ~ 25wt%, most preferably 18wt% ~ 22wt%.In the present invention, the gold in the metallic compound
Category can promote oxidant to produce hydroxyl radical free radical, and so as to promote the decomposition to organic matter in sludge, the metallic compound is excellent
Elect one or more in slaine and metal-oxide as；In the present invention, the slaine can be metal inorganic salt,
It can be metal organic salt；Preferably metal formate, metal acetate, metal chloride, metal sulfate and metal nitrate
One or more in one or more in salt, more preferably metal formate, metal acetate and metal chloride；Described
Metal in metallic compound preferably includes one or several in Fe, Mn, Al, V and Ti, more preferably include Fe, Al, Ti and
One or more in one or more in V, most preferably Fe, Ti and Al；
In the present invention, the oxidation is oriented to catalyst includes the adsorbent of 55wt% ~ 95wt%, preferably 70wt% ~
90wt%, more preferably 75wt% ~ 85wt%, most preferably 78wt% ~ 82wt%.In the present invention, the adsorbent has larger
Specific surface area and higher absorbability such that it is able to adsorb the substantial amounts of solid matter such as heavy metal classes, improve to sludge
Treatment effect.In the present invention, the adsorbent is preferably carbons adsorbent, sepiolite powder, kieselguhr, colliery powder, powder
One or several in coal ash, crushed crude pearlite, bentonite in powder, volcano ashes and Kaolin, more preferably carbon dust, activated carbon,
One or more in Linesless charcoal, flyash, kieselguhr, crushed crude pearlite, Kaolin, most preferably carbon dust, activated carbon, in flyash
One or more；In the present invention, the mesh number of the granularity of the adsorbent be preferably 100 mesh more than, more preferably 150 mesh with
On；
In the present invention, the oxidation be oriented to the addition of catalyst according to the species of pending sludge different and not
With in the present invention, the pending sludge is preferably excess sludge or mud.When the pending sludge is remaining dirty
During mud, the oxidation is oriented to catalyst and is preferably with the mass ratio of butt in the excess sludge（3%~8%）:1, more preferably
（4%~7%）:1；When the pending sludge is mud, the oxidation is oriented to the quality of catalyst and butt in the mud
Than being preferably（0.1%~0.5%）:1, more preferably（0.2%~0.4%）:1；
The present invention is oriented to charging sequence of the catalyst in mixing to the pending mud, oxidant and oxidation does not have spy
Different restriction, using charging sequence well known to those skilled in the art.The preferably first addition in pending mud of the invention
Oxidation is oriented to catalyst, the mixture for obtaining is stirred, and is added thereto to oxidant during stirring, carry out oxygen
Change reaction.The present invention does not have special restriction to the method for the stirring, using the skill of stirring well known to those skilled in the art
Art scheme；In the present invention, the temperature of the oxidation reaction is preferably room temperature；The time of the oxidation reaction is according to waiting to locate
The quality of reason sludge is different and different, and the quality of pending mud is more, and the time of oxidation reaction also will extend therewith, makes oxidation
Reaction more can be carried out completely and thoroughly, and the present invention does not have special restriction to this, be known using those skilled in the art
Time-align technique scheme.
After completing the reaction of the pending mud and oxidant, the product for obtaining is mixed by the present invention with coagulation agent
Close, then the product for obtaining is filtered, that is, completes the process to pending mud.In the present invention, the coagulation agent is excellent
Choosing includes following components：
The FeCl of 0wt% ~ 60wt%3；
The aluminium polychlorid of 37wt% ~ 95wt%；
The PAMC of 3wt%10wt%.
In the present invention, the coagulation agent preferably includes the FeCl of 0wt% ~ 60wt%3, more preferably 5wt% ~ 55wt%, most
Preferably 10wt% ~ 50wt%；The coagulation agent preferably includes the aluminium polychlorid of 37wt% ~ 95wt%（PAC）, more preferably
45wt% ~ 90wt%, most preferably 50wt% ~ 80wt%；The coagulation agent preferably includes the PAMC of 3wt%10wt%
（CPAM）, more preferably 5wt% ~ 8wt%；
In the present invention, the coagulation agent is preferably with the butt mass ratio of the pending mud（0.05%~5%）:1,
More preferably（0.075%~4%）:1；
The present invention does not have special restriction to the coagulation agent with the temperature that the oxidation reaction product of pending mud mixes,
It is preferred that carrying out at room temperature.The present invention is preferably stirred when the oxidation reaction product of pending mud is mixed with coagulation agent
Mix, the present invention does not have special restriction to the method for the stirring, using the technical side of stirring well known to those skilled in the art
Case.
After the mixing of the oxidation reaction product for completing coagulation agent and pending mud, the mixture for obtaining is carried out by the present invention
Filter, complete the process to sludge.The present invention does not have special restriction to the method for filtering, and is known using those skilled in the art
Filtration technical scheme.
After the process to sludge is completed, as a result the COD of the filtrate that detection is obtained shows that the present invention is provided to the present invention
After the process that method is obtained, the COD of the filtrate of sludge is less than 150mg/L, or even can reach less than 100mg/L；And,
The method that the present invention is provided carries out sludge after minimizing process, and its moisture content reduces to less than 55%.
The invention provides a kind of method for processing sludge, comprises the following steps：a）By pending sludge and oxidant
Catalyst mixing is oriented to oxidation, is reacted, the oxidation is oriented to catalyst includes following components：The metal of 5wt% ~ 45wt%
Compound；The adsorbent of 55wt% ~ 95wt%；b）By step a）The product for obtaining was carried out after being mixed with coagulation agent
Filter.Pending sludge is oriented to catalyst with oxidant and oxidation and carries out oxidation reaction by the present invention first, then anti-by obtained
Answer product to be filtered after mixing with coagulation agent, complete the process to sludge.The oxidation that the method that the present invention is provided is adopted is oriented to
Catalyst includes metallic compound and adsorbent, and the metal in metallic compound can promote oxidant to produce substantial amounts of hydroxyl certainly
By base, promote the degraded to organic matter in sludge；And adsorbent has larger specific surface area and higher absorbability, energy
Enough adsorb substantial amounts of solid matter in sludge, so as to be conducive to the rupture of membranes of microorganism extracellular polymeric and decomposition in sludge, so as to
The content of reducing substanceses in sludge is reduced, so that the COD of the sludge after processing reduces.Experimental result table
Bright, the COD of the sludge after the process that the method for providing of the invention is obtained is less than 150mg/L.
In addition, the method that the present invention is provided adds oxidation in oxidizing process is oriented to catalyst so that the dehydration of sludge
Rate is higher；And, the method that the present invention is provided causes that sludge increment is little, be conducive to subsequent treatment.
In order to further illustrate the present invention, the method for the process sludge present invention provided with reference to embodiment is carried out in detail
Carefully describe, but they can not be interpreted as limiting the scope of the present invention.
In the examples below, secondary product of the excess sludge after Sewage Plant biochemical wastewater treatment.
Embodiment 1
It is 80 to add 50g mass ratioes in the excess sludge containing 1kg butts:20 carbon dust and the mixture of FeCl3, are stirring
Under conditions of mixing, 0.5g ozone is passed through thereto, and stirring makes which fully react；Then add in the product for obtaining
0.5g contains the coagulation agent of the CPAM of the PAC and 10wt% of FeCl3,40wt% of 50wt%, by excess sludge after stirring reaction is complete
Filter, complete the process to excess sludge.
The present invention detects that the moisture content of the excess sludge after being processed is 50%；
The COD of the filtrate that present invention detection is obtained is 120mg/L.
Embodiment 2
It is 35 to add 0.35kg mass ratioes in the excess sludge containing 10kg butts:40:10:15 activated carbon powder, fine coal
The mixture of ash, ferric formate and aluminium triformate；Then it is passed through 8g ozone under conditions of stirring thereto, and stirring makes which fully anti-
Should；To in the product for obtaining, add 10g to contain 55wt% again FeCl3, 35wt% PAC and 10wt% CPAM coagulation
Excess sludge is filtered after stirring reaction is complete by agent, completes the process to excess sludge.
The present invention detects that the moisture content of the excess sludge after being processed is 48%；
The COD of the filtrate that present invention detection is obtained is 85mg/L.
Embodiment 3
It is 82 to add 3.25kg mass ratioes in the excess sludge containing 50kg butts:9:9 carbon dust, FeCl3And ferric acetate
Mixture, under conditions of stirring, be passed through 15g ozone thereto, and stirring make which fully react；Then to the reaction for obtaining
The FeCl for adding 1kg to contain 45wt% in product3, 35wt% PAC and 20wt% CPAM coagulation agent, after stirring reaction is complete
Excess sludge is filtered, the process to excess sludge is completed.
The present invention detects that the moisture content of the excess sludge after being processed is 30%；
The COD of the filtrate that present invention detection is obtained is 100mg/L.
Embodiment 4
It is 72 to add 0.3kg mass ratioes in the excess sludge containing 100kg butts:28 carbon dust and the mixture of FeCl3,
Under conditions of stirring, 50g ozone is passed through thereto, and stirring makes which fully react；Then add in the product for obtaining
Enter the FeCl that 3kg contains 45wt%3, 45wt% PAC and 10wt% CPAM coagulation agent, will be remaining dirty after stirring reaction is complete
Mud is filtered, and completes the process to excess sludge.
The present invention detects that the moisture content of the excess sludge after being processed is 40%；
The COD of the filtrate that present invention detection is obtained is 80mg/L.
Embodiment 5
It is 35 to add 0.4kg mass ratioes in the excess sludge containing 80kg butts:40:10:15 activated carbon powder, fine coal
The mixture of ash, ferric formate and aluminium triformate, under conditions of stirring, is passed through 64g ozone thereto, and stirring makes which fully anti-
Should；Then in the product for obtaining, add 1.2kg to contain 55wt% FeCl3, 40wt% PAC and 5wt% CPAM poly-
Excess sludge is filtered after stirring reaction is complete by heavy agent, completes the process to excess sludge.
The present invention detects that the moisture content of the excess sludge after being processed is 38%；
The COD of the filtrate that present invention detection is obtained is 90mg/L.
As seen from the above embodiment, the invention provides a kind of method for processing sludge, comprises the following steps：a）To wait to locate
The sludge of reason is oriented to catalyst with oxidant and oxidation and mixes, and is reacted, and the oxidation is oriented to catalyst includes following components：
The metallic compound of 5wt% ~ 45wt%；The adsorbent of 55wt% ~ 95wt%；b）By step a）The product for obtaining and coagulation
Filtered after agent mixing.Pending sludge and oxidant and oxidation are oriented to catalyst and carry out aoxidizing instead by the present invention first
Should, then filtered after the product for obtaining is mixed with coagulation agent, complete the process to sludge.The method that the present invention is provided
Using oxidation be oriented to catalyst and include metallic compound and adsorbent, it is substantial amounts of that metallic compound can promote oxidant to produce
Hydroxyl radical free radical, promotes the degraded to organic matter in sludge；And adsorbent has larger specific surface area and higher absorption
Ability, can adsorb substantial amounts of solid matter in sludge, so as to be conducive in sludge the rupture of membranes of microorganism extracellular polymeric and point
Solution, so as to reduce the content of reducing substanceses in sludge, so that the COD of the sludge after processing reduces.Experiment
As a result show, the COD of the sludge after the process that the method that the present invention is provided is obtained is less than 150mg/L.
In addition, the method that the present invention is provided adds oxidation in oxidizing process is oriented to catalyst so that the dehydration of sludge
Rate is higher；And, the method that the present invention is provided causes that sludge increment is little, be conducive to subsequent treatment.
Above a kind of method for processing sludge provided by the present invention is described in detail.Used herein specifically
Individual example is set forth to principle of the invention and embodiment, and the explanation of above example is only intended to help and understands the present invention
Method and its core concept.It should be pointed out that for those skilled in the art, without departing from of the invention former
On the premise of reason, some improvement and modification can also be carried out to the present invention, these improvement and modification also fall into right of the present invention and want
In the protection domain that asks.
Claims (8)
1. a kind of method for processing sludge, comprises the following steps：
A) pending sludge is oriented to catalyst with oxidant and oxidation to mix, is reacted, the oxidation is oriented to catalyst
Including following components：
The metallic compound of 5wt%～45wt%；
The adsorbent of 55wt%～95wt%；
Metal in the metallic compound includes Fe, and the metallic compound is metal acetate and metal chloride；
B) filtered after mixed the product that the step a) is obtained with coagulation agent.
2. method according to claim 1, it is characterised in that the oxidant accounts for the matter of the butt of the pending mud
Amount fraction is (0.1～1.0) g/kg.
3. method according to claim 2, it is characterised in that the oxidant accounts for the matter of the butt of the pending mud
Amount fraction is (0.1～0.5) g/kg.
4. method according to claim 1, it is characterised in that the oxidant is hydrogen peroxide or ozone.
5. method according to claim 1, it is characterised in that the oxidation is oriented to catalyst includes following components：
The metallic compound of 10wt%～30wt%；
The adsorbent of 70wt%～90wt%.
6. method according to claim 1, it is characterised in that the adsorbent is carbons adsorbent, sepiolite powder, diatom
One or more in soil, colliery powder, flyash, crushed crude pearlite, bentonite in powder, volcano ashes and Kaolin.
7. method according to claim 1, it is characterised in that the oxidation is oriented to catalyst and the pending mud
The mass ratio of butt is (3%～8%):1.
8. method according to claim 1, it is characterised in that the coagulation agent includes following components：
The FeCl of 0wt%～60wt%3；
The aluminium polychlorid of 37wt%～95wt%；
The PAMC of 3wt%～10wt%.
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| CN104492459A (en) * | 2014-12-17 | 2015-04-08 | 河海大学 | Composite catalyst for preparing hydrogen through supercritical water gasification of low-moisture-content dehydrated sludge and application of composite catalyst |
| CN109628194B (en) * | 2018-12-26 | 2021-05-14 | 同济大学 | Method for producing oil-coal modified fuel by using oil-containing sludge |
| CN110627358B (en) * | 2019-10-12 | 2022-04-29 | 山东鲁碧建材有限公司 | Slag micro powder with low sulfur and low chemical oxygen demand, preparation method thereof and glass fiber |
| CN115286212A (en) * | 2022-08-09 | 2022-11-04 | 浙江工业大学 | Sludge dewatering composite conditioning method using polyoxometallate and inorganic coagulant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0316700A (en) * | 1989-06-15 | 1991-01-24 | Koyo Chem Kk | Method for dehydrating sludge and chemicals used therefor |
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| CN101717174B (en) * | 2009-11-27 | 2012-09-26 | 湖南湘牛污泥深度处理有限公司 | Technology for treating sludge of sewage plant by controllable wet oxidation coagulation method |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0316700A (en) * | 1989-06-15 | 1991-01-24 | Koyo Chem Kk | Method for dehydrating sludge and chemicals used therefor |
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