CN101088942B - Process of treating oil-containing sludge - Google Patents
Process of treating oil-containing sludge Download PDFInfo
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- CN101088942B CN101088942B CN2006100122396A CN200610012239A CN101088942B CN 101088942 B CN101088942 B CN 101088942B CN 2006100122396 A CN2006100122396 A CN 2006100122396A CN 200610012239 A CN200610012239 A CN 200610012239A CN 101088942 B CN101088942 B CN 101088942B
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- 239000010802 sludge Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003921 oil Substances 0.000 claims abstract description 61
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- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000000701 coagulant Substances 0.000 claims abstract description 9
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 29
- 238000000926 separation method Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- -1 alkali metal salt Chemical class 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
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- 230000005484 gravity Effects 0.000 claims description 6
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 150000003016 phosphoric acids Chemical class 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical class OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 239000003945 anionic surfactant Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 101710194948 Protein phosphatase PhpP Proteins 0.000 claims description 2
- 239000013543 active substance Substances 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 150000001413 amino acids Chemical class 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 239000011499 joint compound Substances 0.000 claims description 2
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241001253206 Andrias Species 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
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- 239000000295 fuel oil Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
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- 230000026731 phosphorylation Effects 0.000 description 2
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- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
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- 230000002950 deficient Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 229940093916 potassium phosphate Drugs 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to oil-containing sludge treating process, which includes the following steps: pumping oil-containing sludge into sewage reacting tank and adding water while stirring; adding treating solution; heating and stirring to separate oil from sludge; adding coagulant while stirring to react for 2-30 min, adding polyacrylamide, stirring and solid-liquid separating into three layers; collecting oil, water and sludge separately; and collecting the sludge with oil content less than 1 wt% in the sludge collecting tank and further solidification or draining. The present invention has the advantages of recovering oil, reducing environmental pollution, low cost, etc.
Description
Technical field
The invention belongs to field of waste water treatment, specifically relate to a kind of oil-containing sludge treating process.
Background technology
Oil is in probing, exploitation, accumulating, all will produce a large amount of mud in the oil refining system process, oil product storage tank is storing oil product particularly during crude oil, depositing for a long time in the process, a small amount of mechanical impurity in the oil product, sand grains, earth, heavy oil components such as heavy metal salt and paraffin and bituminous matter, because of the difference in specific gravity natural subsidence is accumulated in tank bottom, form not only black but also thick gelatinoid layer, when the regular tank cleaning in 3～6 years at interval, must go out it outside the jar clearly, produce the oil tank bed mud, its quantity is generally more than 1% of this tankage, also has to be reported as 2.2%.
In the oil tank bed mud, composition is very complicated, can not directly discharge.A large amount of heavy oil materials and silt and water form jelly in the jar bed mud, and intractability is big.Simultaneously, also owing to its high hydrocarbons content, the oil tank bed mud is turned waste into wealth becomes possibility.
The oil tank bed mud belongs to oily sludge, and its maximum feature that is different from other greasy filth is that its hydrocarbon polymer (oil) content is high.Investigation finds, contains the inorganic sediment of about 25～30% water and 5% such as silt etc. in the oil tank bed mud, and remaining 70% is hydrocarbon polymer, wherein bituminous matter accounts for 7.8%, paraffin accounts for 6%, and the mud the ash content of coal is 4.8%, in the ash metallic element form by: Fe, Al etc. forms.
Traditional oily sludge treatment technology mainly contains landfill, compost, burning and bio-transformation.Landfill and compost not only need to take a large amount of valuable land resources, and exist oil gas dissipation atmosphere pollution and soil oozes the danger of letting out polluted underground water.And the expense of burning is expensive and need dedusting and gas scrubbing facility.Bioconversion reaction condition influence factor is too many, and operation easier is big, itself exist also in addition that floor space is big, the transformation period is long, for colloid and bituminous matter shortcoming such as can not degrade substantially.
In Chinese patent CN90104444.X, disclose a kind of oil sludge separation method and equipment, be mainly used in solid-liquid separation.Comprise coalescent, the coagulation physical chemistry isolation technique of oil-water-mud system and the physical cleaning of oil, it is characterized in that at first greasy filth being distributed in the purified aqueous solution that contains flocculation agent and inorganic salt, realize oil, mud primary separation under condition of heating and stirring, the crude oil that primary separation is obtained adopts the centrifuging isolation technique to purify then.The dirty Abfallwirtschaft recovery technology of a kind of petroleum-type solid is disclosed in Chinese patent CN92112167.9, it is characterized in that earlier the dirty refuse of petroleum-type solid being transmitted material loading through crushing type, it is assorted to sub-elect oil plant and mud through reverse-flow greasy filth sorting operation again, oil passing filter post precipitation, become processed oil through centrifugation again, the assorted discharging of mud is the field also.But, these technologies and technology all exist oil recovery rate low the shortcoming of poor processing effect.
Summary of the invention
The objective of the invention is to overcome existing oily sludge treatment technology or need take a large amount of valuable land resources, exist oil gas dissipation atmosphere pollution and soil and ooze the danger of letting out polluted underground water, or expense is expensive and need dedusting and gas scrubbing facility, or operation easier is big, transformation period is long, substantially can not degrade for colloid and bituminous matter, or oil recovery rate is low, defectives such as poor processing effect, thus a kind of land occupation resource that need not is provided, do not pollute, expense is cheap, simple to operate, and can from greasy filth, reclaim the oil-containing sludge treating process of crude oil efficiently.
The objective of the invention is to realize by the following technical solutions:
The invention provides a kind of oil-containing sludge treating process, comprise following step:
1) oily sludge is pumped into the sludge reaction pond, add entry while stirring, the weight ratio that adds entry/mud is 0.5～5: 1, the best adding than being 1～2: 1;
Add treatment solution then, the adding concentration of treatment solution is 100～60000ppm, and best adding concentration is 1000～30000ppm;
Described treatment solution comprises the silicate of the 0.001～10wt% that accounts for the treatment solution gross weight, the nonionogenic tenside of 1～10wt%, the anion surfactant of 1～10wt%, phosphoric acid salt and the 0.001～10wt% basic cpd of 0.001～10wt%, and surplus is a water; Wherein:
Described silicate is an alkali metal salt of silicic acid compounds, and as water glass, described silicate accounts for 0.001～10wt% of treatment solution gross weight, preferred 0.7～5wt%, more preferred 2.5～4.5wt%;
Described nonionogenic tenside is lived tensio-active agent (as the Ethanol Ethoxylation thing for being selected from Soxylat A 25-7, alkylphenol ethoxylate etc.), carboxylicesters, ethylene glycol fatty acid, the carboxylic amino acid, one or more in the alkylphenol polyester (preferred nonyl phenol polyester); Described non-ionic surfactant accounts for 1～10wt% of treatment solution gross weight, preferred 1～3wt%;
Described anion surfactant is for being selected from polyoxyethylene carboxylate salt, sulfonate (as alkylbenzene sulfonate, lignosulfonate/naphtalene sulfonate, naphthalenesulfonate, sulfonated petro-leum, sulfonated), vitriol is (as alcohol radical vitriol, the oxyethyl group sulfated alcohols), one or more in the phosphoric acid ester (as ortho-phosphoric acid one or diester, the phosphorylation ethoxylate); Preferably phosphoric acid ester, alkylbenzene sulfonate, sulfonated; More the composition of preferred alkyl benzene sulfonate and sulfonated (the two weight ratio is 0.5～2: 1), or the composition of phosphorylation ethoxylate and sulfonated (the two weight ratio is 0.5～2: 1); The agent alive of described anionic surface accounts for 1～10wt% of treatment solution gross weight, preferred 3～4wt%;
Described phosphoric acid salt comprises orthophosphoric acid salt and tri-polyphosphate, as sodium phosphate, and potassiumphosphate, ammonium phosphate, tripoly phosphate sodium STPP etc.; Described phosphoric acid salt accounts for 0.001～10wt% of treatment solution gross weight, and preferred 2.5～4.5%;
Described basic cpd comprises: Ke Xingjia, soda-lime, caustic soda, yellow soda ash or sodium bicarbonate; Described basic cpd accounts for 0.001～10wt% of treatment solution gross weight, preferred 0.6～1.5wt%.
2) the muddy water mixed system to step 1) heats, make 10～90 ℃ (preferred 45～55 ℃) of system intensification,, stir 10 minutes～6 hours (preferred 1～2 hour) in this temperature, the muddy water mixed system thorough mixing of greasy filth and treatment solution, the crude oil in the mud is come out by wash-out;
Described type of heating can be to adopt electric heater, also can be to carry out water-bath by steam or hot water;
3) through step 2) processing after, stir on the limit, the limit adds coagulating agent in mixed solution, behind reaction 2～30min, add the polyacrylamide (PAM) of 2～10ppm again, restir 2～5min carries out solid-liquid separation;
Described coagulating agent is aluminium system (as polymerize aluminum chloride) or iron system (as bodied ferric sulfate) coagulating agent, and the add-on that adds coagulating agent in every liter of mixed solution is 20～300mg (preferred 50～100mg);
Described solid-liquid separation can be carried out in gravity settling basin or Cyclonic reactor;
Hydraulic detention time at Cyclonic reactor is 2min;
4) through the processing of step 3), solidliquid mixture is divided into 3 layers, and the upper strata is the sump oil that wash-out comes out, and the middle level is the sewage layer, and the bottom is a mud, enters the separation that solid-liquid separator carries out profit mud, collects oil, water, mud respectively;
Described solid-liquid separator can be settling tank, Cyclonic reactor, pressure filter or centrifugation apparatus;
The sump oil that obtains enters contaminated-oil basin or collects storage tank, reclaims;
The sewage that obtains enters the sludge reaction pond of step 1), is utilized again in oil-containing sludge treating process next time again;
The mud oil concentration that obtains advances the mud collecting tank less than 1wt%, treats solidification treatment or discharging.
The advantage of oil-containing sludge treating process provided by the invention is that present method need not land occupation resource, not pollution, expense is cheap, simple to operate and can reclaim crude oil efficiently from greasy filth, reduces environmental pollution.
Description of drawings
Fig. 1 is the schematic flow sheet of oil-containing sludge treating process provided by the invention.
Embodiment
Embodiment 1
Get big jar of bed mud of certain field joint stations, the composition of bed mud sees Table 1.This oily sludge is pumped into the sludge reaction pond, add entry while stirring, the part by weight that adds entry/mud in mud is 1.5: 1 a water, adds the treatment solution of 30000ppm then, and the composition of treatment solution sees Table 2.Finish the work behind the said process, feed steam-heated cal(l)andria and expire 50 ℃ and stirred 2 hours with agitator, the muddy water mixed system thorough mixing of greasy filth and treatment solution, the crude oil in the mud is come out by wash-out, carries out gravity separation then, and disengaging time is 12 hours; After finishing above-mentioned technology, oil, cement are collected respectively; Every liter of oily(waste)water collecting adds the polymerize aluminum chloride of 200mg, the PAM that adds 2ppm behind the reaction 15min again, adopt Cyclonic reactor to carry out solid-liquid separation subsequently, hydraulic detention time at this reactor is 2min, sewage is after treatment utilized again again, and mud and sump oil are collected respectively.After treatment, the mud oil concentration advances the mud collecting tank less than 1wt%, treats solidification treatment or discharging.
The composition of table 1, jar bed mud
The composition of table 2, treatment solution (wt%)
Embodiment 2,
Get big jar of bed mud of certain refinery, the composition of bed mud sees Table 3.Adding entry/mud ratio in mud is: 1.6: 1 water and the treatment solution of 30000ppm, the composition of treatment solution sees Table 4.Finish the work behind the said process, feed steam-heated cal(l)andria and expire 50 ℃ and stir with agitator and to carry out gravity separation after 2 hours, disengaging time is 12 hours; After finishing above-mentioned technology, oil, cement are collected respectively; Every liter of oily(waste)water collecting adds the bodied ferric sulfate of 200mg, the PAM that adds 2ppm behind the reaction 15min again, adopt gravity settling basin to carry out solid-liquid separation subsequently, hydraulic detention time at this reactor is 2min, sewage is after treatment utilized again again, and mud and sump oil are collected respectively.Mud Central Plains oil concentration is less than 0.5wt%. after treatment
The composition of table 3, jar bed mud
The composition of table 4, treatment solution (wt%)
Claims (10)
1. oil-containing sludge treating process comprises following step:
1) oily sludge is pumped into the sludge reaction pond, add entry while stirring, the weight ratio that adds entry/mud is 0.5～5: 1;
Add treatment solution then, the adding concentration of treatment solution is 100～60000ppm;
Described treatment solution comprises the water glass of the 3.49wt% that accounts for the treatment solution gross weight, the nonionogenic tenside of 1～10wt%, the anion surfactant of 1～10wt%, tripoly phosphate sodium STPP and the 1wt% basic cpd of 3.49wt%, and surplus is a water;
2) the muddy water mixed system to step 1) heats, and system is heated up 10～90 ℃, in this temperature, stirred 10 minutes～6 hours, and the muddy water mixed system thorough mixing of greasy filth and treatment solution, the crude oil in the mud is come out by wash-out;
Described type of heating is the employing electric heater, or carries out water-bath by steam or hot water;
3) through step 2) processing after, stir on the limit, the limit adds coagulating agent in mixed solution, behind reaction 2～30min, add the polyacrylamide of 2～10ppm again, restir 2～5min carries out solid-liquid separation;
Described coagulating agent is aluminium system or ferric flocculant, and the add-on that adds coagulating agent in every liter of mixed solution is 20～300mg;
Described solid-liquid separation is for to carry out in gravity settling basin or Cyclonic reactor;
Hydraulic detention time at Cyclonic reactor is 2min;
4) through the processing of step 3), solidliquid mixture is divided into 3 layers, and the upper strata is the sump oil that wash-out comes out, and the middle level is the sewage layer, and the bottom is a mud, enters the separation that solid-liquid separator carries out profit mud, collects oil, water, mud respectively;
Described solid-liquid separator is settling tank, Cyclonic reactor, pressure filter or centrifugation apparatus;
The sump oil that obtains enters contaminated-oil basin or collects storage tank, reclaims;
The sewage that obtains enters the sludge reaction pond of step 1), is utilized again in oil-containing sludge treating process next time again;
The mud oil concentration that obtains advances the mud collecting tank less than 1wt%, treats solidification treatment or discharging.
2. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the weight ratio that adds entry/mud in the described step 1) is 1～2: 1.
3. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the adding concentration of treatment solution is 1000～30000ppm in the described step 1).
4. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the silicate described in the described step 1) is an alkali metal salt of silicic acid compounds, and described silicate accounts for 0.7～5wt% of treatment solution gross weight.
5. oil-containing sludge treating process as claimed in claim 1, it is characterized in that: the non-ionic surfactant described in the described step 1) is for being selected from Soxylat A 25-7 tensio-active agent alive, carboxylicesters, ethylene glycol fatty acid, the carboxylic amino acid, one or more in the alkylphenol polyester; Described non-ionic surfactant accounts for 1～3wt% of treatment solution gross weight.
6. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the anion surfactant described in the described step 1) is to be selected from polyoxyethylene carboxylate salt, sulfonate, vitriol, the phosphoric acid ester one or more; The agent alive of described anionic surface accounts for 3～4wt% of treatment solution gross weight.
7. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the phosphoric acid salt described in the described step 1) comprises orthophosphoric acid salt and tri-polyphosphate; Described phosphoric acid salt accounts for 2.5～4.5% of treatment solution gross weight.
8. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the basic cpd described in the described step 1) is Ke Xingjia, soda-lime, caustic soda, yellow soda ash or sodium bicarbonate; Described basic cpd accounts for 0.6～1.5wt% of treatment solution gross weight.
9. oil-containing sludge treating process as claimed in claim 1 is characterized in that: system is warming up to 45～55 ℃ described step 2), in this temperature, stirs 1～2 hour.
10. oil-containing sludge treating process as claimed in claim 1 is characterized in that: the add-on that adds coagulating agent in every liter of mixed solution described in the described step 3) is 50～100mg.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100122396A CN101088942B (en) | 2006-06-14 | 2006-06-14 | Process of treating oil-containing sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100122396A CN101088942B (en) | 2006-06-14 | 2006-06-14 | Process of treating oil-containing sludge |
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| CN101088942A CN101088942A (en) | 2007-12-19 |
| CN101088942B true CN101088942B (en) | 2010-10-06 |
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| CN111170542A (en) * | 2020-01-16 | 2020-05-19 | 海积(北京)科技有限公司 | Normal-pressure electric desalting backwashing wastewater treatment device |
| CN114535272B (en) * | 2020-11-25 | 2023-08-08 | 中国石油化工股份有限公司 | Microemulsion for soil remediation, preparation method thereof and petroleum-polluted soil remediation method |
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Application publication date: 20071219 Assignee: Zhongjie Huanzhao (Jiangsu) Environmental Technology Co.,Ltd. Assignor: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences Contract record no.: 2019320000274 Denomination of invention: Process of treating oil-containing sludge Granted publication date: 20101006 License type: Common License Record date: 20190730 |
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