CN104341081A - Harmless treatment method for separation and recovery of oily sludge - Google Patents
Harmless treatment method for separation and recovery of oily sludge Download PDFInfo
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- CN104341081A CN104341081A CN201310326836.6A CN201310326836A CN104341081A CN 104341081 A CN104341081 A CN 104341081A CN 201310326836 A CN201310326836 A CN 201310326836A CN 104341081 A CN104341081 A CN 104341081A
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 239000010802 sludge Substances 0.000 title claims abstract description 38
- 238000000926 separation method Methods 0.000 title claims abstract description 36
- 238000011084 recovery Methods 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000003795 desorption Methods 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000012071 phase Substances 0.000 claims abstract description 27
- 239000007790 solid phase Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000002351 wastewater Substances 0.000 claims abstract description 8
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 43
- 239000002699 waste material Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 16
- 238000005119 centrifugation Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 6
- 230000016615 flocculation Effects 0.000 claims description 6
- 239000011499 joint compound Substances 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 206010002660 Anoxia Diseases 0.000 claims description 4
- 241000976983 Anoxia Species 0.000 claims description 4
- 206010021143 Hypoxia Diseases 0.000 claims description 4
- 230000007953 anoxia Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 235000009496 Juglans regia Nutrition 0.000 claims description 3
- 239000008346 aqueous phase Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000009287 sand filtration Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 235000020234 walnut Nutrition 0.000 claims description 3
- 239000010729 system oil Substances 0.000 claims 2
- 240000007049 Juglans regia Species 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 238000012545 processing Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000001925 catabolic effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 241000758789 Juglans Species 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
A harmless treatment technology for separation and recovery of oily sludge comprises the following steps: 1, conveying the oily sludge to a high solid content treatment device, carrying out preliminary screening on large granule impurities in the oily sludge, and conditioning the sludge; 2, conveying pre-conditioned oily sludge to a three-phase centrifuge, and separating oil, water and mud in the oily sludge; 3, conveying the obtained separated liquid to an oil-water separation device, and further carrying out oil and water separation; 4, inputting the obtained oil phase to an oil storage tank, and inputting water to an oily wastewater advanced treatment system; 5, conveying the obtained solid phase sludge transported to a thermal desorption device, and carrying out heating curing separation and condensation oil-water separation in a thermal desorption treatment process; and 6, conveying water output by the oil-water separation device and water output by the thermal desorption device to the oily wastewater advanced treatment system, and carrying out advanced oil-water separation. The method has the advantages of low cost oily sludge treatment cost, convenient maintenance and management, high efficiency and good stability.
Description
Technical field
The present invention relates to a kind of environment-friendly treating process, particularly a kind of greasy filth is separated and the harmless treatment process reclaimed.
Background technology
Oily sludge is one of principal pollutant produced in oil-field development and storage and transport process, and if oily sludge can not get processing timely and effectively, impact in various degree will be caused on output zone and surrounding enviroment.Owing to containing the cacodorous hazardous and noxious substances such as sulfide, benzene homologues, phenols, anthracene, pyrene in oily sludge, and some contained hydrocarbons has carcinogenic, teratogenesis, mutagenesis in crude oil, Sludge in Oilfields is listed in dangerous solid waste (HW08) by country, manages by Hazardous wastes.The method of process oily sludge generally has both at home and abroad at present: burning method, biological treatment, hot washing method, solvent extration, chemical demulsification method, solid-liquid isolation method etc.Although the method for process is a lot, application there is certain limitation, lacks systemic flow process, whole process process cannot be completed.
Summary of the invention
The object of the invention is the defect for existing in prior art, that particularly causes output zone and surrounding enviroment for the oily sludge produced in oil-field development and storage and transport process has a strong impact on, and provides a kind of greasy filth to be separated and the harmless treatment process reclaimed.By improving stability and the efficiency of disposal of oily sludge, can processing cost be reduced, maintenance management is more convenient.The innoxious carburetion mud that, cost higher than traditional greasy filth processing efficiency is low is separated and recovery processing technique.Stability and the efficiency of disposal of oily sludge can not only be improved, and processing cost, maintenance management can be greatly reduced conveniently.Present invention process feature comprises the following steps:
A. oily sludge is transported to high solid content treatment unit, preliminary screening is carried out to large granular impurity in greasy filth and mud modified;
B. the greasy dirt after steps A is modified is in advance transported to three-phase centrifuge, whizzer spiral high speed is utilized to rotate the powerful centrifugal force produced, separate in greasy dirt by the material of different settling ratio and buoyant density, realize the high efficiency separation of oil, water, mud;
C. by the Liquid transfer after step B centrifugation to oily-water seperating equipment, utilize sedimentation theory to be separated with water by oil further;
D. the oil phase input storage tank after step B centrifugation is recycled, water is input to oily(waste)water advanced treatment system;
E. the solid phase sludge after step B centrifugation is transported to thermal desorption device, under anaerobic or anoxia condition, heat solid matter, hydro carbons in these solid matters will be present in, the objectionable impuritiess such as oils become gas desorption out gas from solid matter, desorption gas fraction out uses as fuel, residue solid matter is as embedding material or brickmaking harmless treatment, oily water separation is carried out again through the oily(waste)water of cooling after thermal desorption device process, oil product is inputted storage tank, waste water is transported to the process of oily(waste)water advanced treatment system,
F. the water that the thermal desorption device in the water of the oily-water seperating equipment output in step C and step e exports is transported to oily(waste)water advanced treatment system and carries out degree of depth oily water separation.
In described steps A, the control of the operating greasy filth homogeneous temperature of high solid content treatment unit is at 80 ~ 85 DEG C.For whole oil soil treatment technique provides good temperature guarantee.
Greasy dirt in described step B adds flocculation agent before being transported to three-phase centrifuge, improves separating effect by adding flocculation agent.Flocculation agent is PAM(polyacrylamide), dosage 3-5kg/Tds.
Oil phase in described step B after three-phase centrifuge is separated, water ratio≤2%.Oil quality meets the requirement of recycling.
Final oil length≤1% of aqueous phase in described step C after oily-water seperating equipment is separated, can be input to oil-contained waste water treatment system, carry out advanced treatment by the oily(waste)water advanced treatment system in step F.
Solid phase sludge oleaginousness≤0.3% in described step e after thermal desorption device process, water ratio≤65%.Reach the relevant regulations about soil mineral oil in fluid≤3000mg/kg in " in agricultural sludge pollutant catabolic gene standard " (GB4284-84).Mud after process can be used for producing material of construction, builds the road, afforests ridging or direct landfill etc.
Thermal desorption disposing technique through thermal desorption device in described step e is made up of two portions, and be heating and curing separating step and condensation oily water separation step.
Be heating and curing separating step: solid phase sludge is through hopper input spiral pusher device, spiral pusher device periphery is the direct-fired combustion chamber of flame, fuel (as diesel oil, Sweet natural gas or propane etc.) is passed in combustion chamber, the heat indirect heating materials inside sent after passing into fuel combustion in combustion chamber, solid phase sludge is thermally equivalent under the rolling of spiral, discharges in gaseous form after pollutent reaches boiling point.
Condensation oily water separation step: lowered the temperature rapidly by direct quenching unit from thermal desorption device expellant gas, is imported into three-phase centrifuge and is separated, and the oil product after separation enters oil tank storage, and water is transported to the process of oily(waste)water advanced treatment system.
Oily(waste)water advanced treatment system in described step F is the conventional treatment process of " two-stage air supporting+walnut shell filter+biochemical treatment+sand filtration ", the first discharge standard that water outlet reaches " integrated wastewater discharge standard " (GB8978-1996).
High solid content treatment unit in steps A is provided with steam heating unit, stirs modified unit, scrapes slag unit, particle separation vibration unit, hydraulic pressure unit and power pumping unit, stirs modified unit, scrapes slag unit, particle separation vibration unit is driven by hydraulic pressure unit.At described steam heating unit and stir modified unit and to heat greasy filth and modified with the isotropic stable ensureing material, the macrobead of some sedimentations moves to described particle separation vibration unit by the described draw of scraping slag unit and finally discharges.Greasy filth after modulation is delivered to subsequent technique treatment facility by described power pumping unit.Three-phase centrifuge inside in step B is provided with high speed rotating screw.Utilize spiral high speed to rotate the powerful centrifugal force produced, the material of settling ratio different in greasy filth and buoyant density is separated, thus achieves the high efficiency separation of oil, water, mud.
Advantage of the present invention is, maintenance management convenience low by the oily sludge cost of this art breading, and efficiency is high, good stability.The present invention to oily sludge by high solid content treatment unit to containing mud modified in advance after, again through three-phase centrifuge and oily-water seperating equipment, reach to oil, water, mud carry out high efficiency separation, carry out final harmless process finally by thermal desorption device, Gu slag can the recycling such as landfill, brickmaking.Can directly recycling through isolated oil phase; Aqueous phase reaches the first discharge standard of " integrated wastewater discharge standard " (GB8978-1996) after oily(waste)water advanced treatment system.
Accompanying drawing explanation
Fig. 1 process flow diagram of the present invention.
In figure: 1 high solid content treatment unit, 2 three-phase centrifuges, 3 water-and-oil separators, 4 storage tank, 5 thermal desorption device, 6 oily(waste)water advanced treatment systems.
Embodiment
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing:
See Fig. 1, following high solid content treatment unit 1, three-phase centrifuge 2, water-and-oil separator 3, storage tank 4, thermal desorption device 5, oily(waste)water advanced treatment system 6 in treatment process of the present invention, is used to form.The process flow steps of the present embodiment is as follows:
A. oily sludge is transported to high solid content treatment unit 1, preliminary screening is carried out to large granular impurity in greasy filth and mud modified.Specific operation process be by greasy filth through steam heating, stir modified, scrape slag conveying, vibratory screening apparatus grades after presetting matter step, preliminary screening is carried out to large granular impurity in greasy filth and mud modified.
B. the greasy dirt after steps A is modified is in advance transported to three-phase centrifuge 2, whizzer spiral high speed is utilized to rotate the powerful centrifugal force produced, separate in greasy dirt by the material of different settling ratio and buoyant density, realize the high efficiency separation of oil, water, mud.Specific operation process is transported to three-phase centrifuge 2 by power-driven pump supply unit.Three-phase centrifuge 2 inside is provided with high speed rotating screw, utilizes whizzer spiral high speed to rotate the powerful centrifugal force produced, and the material of settling ratio different in greasy filth and buoyant density can be separated, thus achieve the high efficiency separation of oil, water, mud.
C. by the Liquid transfer after step B centrifugation to water-and-oil separator 3, utilize sedimentation theory to be separated with water by oil further.Specific operation process be by centrifugation after water conveying to water-and-oil separator 3, utilize sedimentation theory to be separated with water by oil further.
D. the oil phase input storage tank 4 after step B centrifugation is recycled, water is input to oily(waste)water advanced treatment system 6.Specific operation process is recycled by oil product input storage tank 4 after separation, and water enters oily(waste)water advanced treatment system 6.
E. the solid phase sludge after step B centrifugation is transported to thermal desorption device 5, under anaerobic or anoxia condition, heat solid matter, hydro carbons in these solid matters will be present in, the objectionable impuritiess such as oils become gas desorption out gas from solid matter, desorption gas fraction out uses as fuel, residue solid matter is as embedding material or brickmaking harmless treatment, oily water separation is carried out again through the oily(waste)water of cooling after thermal desorption device process, oil product is inputted storage tank, waste water is transported to the process of oily(waste)water advanced treatment system, specific operation process is that the solid phase sludge after centrifugation is transported to thermal desorption device 5, under anaerobic or anoxia condition, heat solid matter, the objectionable impuritiess such as the hydro carbons be present in these solid matters, oils are become gas desorption out gas from solid matter, and desorption gas fraction out uses as fuel.Thermal desorption disposing technique through thermal desorption device 5 is made up of two portions, and be heating and curing separating step and condensation oily water separation step.
Be heating and curing separating step: solid phase sludge is through hopper input spiral pusher device, spiral pusher device periphery is the direct-fired combustion chamber of flame, fuel (as diesel oil, Sweet natural gas or propane etc.) is passed in combustion chamber, the heat indirect heating materials inside sent after passing into fuel combustion in combustion chamber, solid phase sludge is thermally equivalent under the rolling of spiral, discharges in gaseous form after pollutent reaches boiling point.
Condensation oily water separation step: lowered the temperature rapidly by direct quenching unit from thermal desorption device 5 expellant gas, be imported into three-phase centrifuge to be separated, oily(waste)water through cooling carries out oily water separation again, oil product is inputted storage tank 4 and store recycling, water is transported to oily(waste)water advanced treatment system 6 and processes.
Solid phase sludge oleaginousness≤0.3%, water ratio≤65% after thermal desorption device 5 processes.Reach the relevant regulations about soil mineral oil in fluid≤3000mg/kg in " in agricultural sludge pollutant catabolic gene standard " (GB4284-84).Mud after process can be used for producing material of construction, builds the road, afforests ridging or direct landfill etc., residue solid matter is as embedding material or brickmaking harmless treatment, after thermal desorption device 5 processes, the water that the water exported through water-and-oil separator 3 and thermal desorption device 5 export is transported to oily(waste)water advanced treatment system 6 and carries out degree of depth oily water separation process, the residue solid matter after thermal desorption device 5 processes can the harmless treatment such as landfill or brickmaking.
The control of the operating greasy filth homogeneous temperature of whole high solid content treatment unit 1 is at 80 ~ 85 DEG C.To ensure the mobility of material and final treatment effect.For whole oil soil treatment technique provides good temperature guarantee.Before three-phase centrifuge 2, improving separating effect by adding flocculation agent, usually selecting PAM(polyacrylamide), dosage is different according to charging situation, generally at 3-5kg/Tds.Oil phase after three-phase centrifuge is separated, final water content in oil≤2% after process.Oil quality meets the requirement of recycling.Realize environmental improvement and antipollution while, certain economic benefit can be obtained; Oil-containing≤0.3% in mud, reaches the relevant regulations about soil mineral oil in fluid≤3000mg/kg in " in agricultural sludge pollutant catabolic gene standard " (GB4284-84), can be used for producing material of construction, builds the road, afforests ridging or direct landfill etc.
F. the water that the thermal desorption device 5 in the water of the oily-water seperating equipment output in step C and step e exports is transported to oily(waste)water advanced treatment system 6 and carries out degree of depth oily water separation.Through the conventional treatment process that oily(waste)water advanced treatment system 6 is " two-stage air supporting+walnut shell filter+biochemical treatment+sand filtration ", the first discharge standard that water outlet reaches " integrated wastewater discharge standard " (GB8978-1996).
Claims (8)
1. greasy filth is separated and the method for innocent treatment reclaimed, and its technology characteristics comprises the following steps:
A. oily sludge is transported to high solid content treatment unit, preliminary screening is carried out to large granular impurity in greasy filth and mud modified;
B. the greasy dirt after steps A is modified is in advance transported to three-phase centrifuge, whizzer spiral high speed is utilized to rotate the powerful centrifugal force produced, separate in greasy dirt by the material of different settling ratio and buoyant density, realize the high efficiency separation of oil, water, mud;
C. by the Liquid transfer after step B centrifugation to system oil water separation device, utilize sedimentation theory to be separated with water by oil further;
D. the oil phase input storage tank after step B centrifugation is recycled, water is input to oily(waste)water advanced treatment system;
E. the solid phase sludge after step B centrifugation is transported to thermal desorption device, under anaerobic or anoxia condition, heat solid matter, hydro carbons in these solid matters will be present in, the objectionable impuritiess such as oils become gas desorption out gas from solid matter, desorption gas fraction out uses as fuel, residue solid matter is as embedding material or brickmaking harmless treatment, after thermal desorption device process, be transported to system oil water separation device through the oily(waste)water of cooling carry out oily water separation again, oil product is inputted storage tank, waste water is transported to the process of oily(waste)water advanced treatment system,
F. the water that the thermal desorption device in the water of the oily-water seperating equipment output in step C and step e exports is transported to oily(waste)water advanced treatment system and carries out degree of depth oily water separation.
2. greasy filth according to claim 1 is separated and the method for innocent treatment reclaimed, and it is characterized in that the control of the operating greasy filth homogeneous temperature of high solid content treatment unit in described steps A is at 80 ~ 85 DEG C.
3. greasy filth according to claim 1 is separated and the method for innocent treatment reclaimed, and the greasy dirt that it is characterized in that in described step B adds flocculation agent before being transported to three-phase centrifuge, and flocculation agent is polyacrylamide, dosage 3-5kg/Tds.
4. greasy filth according to claim 1 is separated and the harmless treatment process reclaimed, and it is characterized in that the oil phase after three-phase centrifuge is separated in described step B, water ratio≤2%.
5. greasy filth according to claim 1 is separated and the method for innocent treatment reclaimed, it is characterized in that final oil length≤1% of aqueous phase after oily-water seperating equipment is separated in described step C, then carry out advanced treatment by the oily(waste)water advanced treatment system in step F.
6. greasy filth according to claim 1 is separated and the method for innocent treatment reclaimed, it is characterized in that the thermal desorption disposing technique through thermal desorption device in described step e is made up of two portions, be heating and curing separating step and condensation oily water separation step, be heating and curing separating step: solid phase sludge is through input spiral pusher device, spiral pusher device periphery is the direct-fired combustion chamber of flame, fuel is passed in combustion chamber, solid phase sludge is thermally equivalent under the rolling of spiral, discharges in gaseous form after pollutent reaches boiling point; Condensation oily water separation step: lowered the temperature rapidly from thermal desorption device expellant gas by direct quenching unit, the system three-phase centrifuge of being imported into is separated, the oil product after separation enters oil tank storage, and water is transported to the process of oily(waste)water advanced treatment system.
7. greasy filth according to claim 1 is separated and the method for innocent treatment reclaimed, and it is characterized in that solid phase sludge oleaginousness≤0.3%, water ratio≤65% in described step e after thermal desorption device process.
8. greasy filth according to claim 1 is separated and the method for innocent treatment reclaimed, and it is characterized in that the oily(waste)water advanced treatment in described step F is: the treatment process of two-stage air supporting+walnut shell filter+biochemical treatment+sand filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326836.6A CN104341081B (en) | 2013-07-30 | 2013-07-30 | Greasy filth separates and the method for innocent treatment reclaimed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326836.6A CN104341081B (en) | 2013-07-30 | 2013-07-30 | Greasy filth separates and the method for innocent treatment reclaimed |
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| Publication Number | Publication Date |
|---|---|
| CN104341081A true CN104341081A (en) | 2015-02-11 |
| CN104341081B CN104341081B (en) | 2016-08-17 |
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