CN107417039A - A kind of oil shale retorting waste water comprehensive processing technique - Google Patents

A kind of oil shale retorting waste water comprehensive processing technique Download PDF

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Publication number
CN107417039A
CN107417039A CN201710464469.4A CN201710464469A CN107417039A CN 107417039 A CN107417039 A CN 107417039A CN 201710464469 A CN201710464469 A CN 201710464469A CN 107417039 A CN107417039 A CN 107417039A
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waste water
oil
water
pond
ammonia
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李海波
王靖宇
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Beijing Zhongke Environment Science And Technology Research Institute Co Ltd
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Beijing Zhongke Environment Science And Technology Research Institute Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • C02F2103/365Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

Abstract

The present invention relates to a kind of oil shale retorting waste water comprehensive processing technique, belong to technical field of waste water processing.It is high for oil shale retorting waste water oil content height, ammonia-nitrogen content, the features such as rich in hardly degraded organic substance, waste water first passes around cooling gravity oil-removing and air supporting removes most suspended substances and oils, then most ammonia-nitrogen is removed through rectifying ammonia still process method, waste water after pretreatment enters biochemical system, biochemical system includes regulating reservoir, anaerobic pond, anoxic pond and Aerobic Pond, majority of organic pollutants removes in the biochemical treatment stage, then Recalcitrant chemicals are removed by coagulation, filtering and the further advanced treating of ozone oxidation, finally by film desalination system treatment for reuse;Oil shale retorting waste water treatment process provided by the invention has the characteristics of technique strong applicability, removal effect is good, and anti-impact force is strong, has good market prospects.

Description

A kind of oil shale retorting waste water comprehensive processing technique
Technical field
The present invention relates to technical field of waste water processing, more particularly to a kind of oil shale retorting waste water comprehensive processing technique.
Background technology
Oil shale is a kind of sedimentary rock, is heated to 500 DEG C or so, can obtain shale oil, and shale oil is near with oil Seemingly, but differ.Substantial amounts of destructive distillation waste water can be produced in the production process of shale oil, destructive distillation waste water is numerous containing pollutant kind More, complicated component, concentration are higher, are difficult organic wastewater recognized in the world, and state key introduces Treatment process One of industry waste water.And it is current, the processing to oil shale retorting waste water both at home and abroad is still under test, the oily page built up Rock destructive distillation waste water treatment plant is also because investment and operating cost are higher and stranded.
Therefore, rational treatment technology is selected, with relatively low cost, rationally efficient handling process causes wastewater to reach standard to arrange Put or reuse be oil shale retorting wastewater treatment key point.
The content of the invention
It is an object of the invention to provide it is a kind of it is simple to operate, can pollutant is degradable, reasonable efficient oil shale Destructive distillation waste water treatment process.
The purpose of the present invention is achieved through the following technical solutions:
A kind of oil shale retorting waste water comprehensive processing technique, oil shale retorting waste water is passed sequentially through into pretreatment, biochemical treatment, depth Reach reuse standard after degree processing and film desalination.
Pretreatment of the present invention includes cooling gravity oil-removing, oil removal by air bubbling and rectifying ammonia still process, waste water and first passes around cooling Gravity oil-removing and air supporting remove most suspended substances and oils, then remove most ammonia-nitrogen through rectifying ammonia still process method, and water outlet enters Biochemical treatment.
Cooling gravity oil-removing temperature of the present invention is 30-40 DEG C, sedimentation time 3-5h;The cooling gravity oil-removing institute Flat flow grease removal tank is preferentially used with equipment.
Oil removal by air bubbling of the present invention is using cavitation air flotation and one or two kinds of tandem compounds of air-dissolving air-float;The air supporting It is one or more of in polymer alumina, bodied ferric sulfate, aluminum sulfate or iron chloride that gas flotation aids are added before oil removing;The air supporting Oil removing medicament addition is 20-100mg/L.
The equipment of rectifying ammonia still process of the present invention is ammonia still, and ammonia still water inlet uses plus alkali regulation PH to 10-12, ammonia still process Tower thermal source is low-pressure steam or heat-conducting oil furnace;Preferably, ammonia still thermal source is low-pressure steam.
Biochemical treatment of the present invention includes water quality adjustment, Anaerobic Treatment, anoxic treatment and Aerobic Process for Treatment, pretreated Waste water, which enters after regulating reservoir carries out water quality adjustment, sequentially enters anaerobic pond, anoxic pond and Aerobic Pond, anti-using the biochemistry of microorganism Majority of organic pollutants should be removed, water outlet enters advanced treating.
Pretreated waste water of the present invention is mixed in regulating reservoir with sanitary sewage or rainwater, so as to realize water Matter is adjusted, residence time 16-24h;Waste water after the water quality adjustment is 6-15h in the anaerobic pond residence time, in Aerobic Pond Residence time is 30-70h;The Aerobic Pond sludge reflux to Aerobic Pond water inlet reflux ratio is 1:1-4:1, Aerobic Pond effluent recycling Reflux ratio to anoxic pond is 1:1-3:1.
Advanced treating of the present invention includes coagulation, filtering and catalytic ozonation, and bio-chemical effluent is successively through coagulation, filtering Hardly degraded organic substance is removed with catalytic ozonation, water outlet enters film desalting processing, and sludge enters at sludge treating system Reason.
Catalytic ozonation reaction hydraulic detention time of the present invention is 10-60min, ozone dosage 0.1- 0.2g/L;It is KLCO-3, KLCO-4 that ozone catalyst is added in the ozone Oxidation Treatment.
Film desalting processing of the present invention includes two or three of combination in ultrafiltration, nanofiltration and counter-infiltration;Taken off through film Effluent reuse after salt treatment is up to standard.
Compared with prior art scheme, the invention has the advantages that:
1st, oil shale retorting waste water treatment process provided by the invention has technique strong applicability, pollutant special project removal effect good The characteristics of particularly hardly degraded organic substance clearance is high, easy to operate, anti-impact force is strong;
2nd, oil shale retorting waste water treatment process provided by the invention, efficiently solves the problem of prior art is present, can With relatively low cost, rationally efficiently make processing discharged wastewater met the national standard, there are good market prospects.
Brief description of the drawings
Fig. 1 is a kind of process chart of oil shale retorting waste water comprehensive processing technique of the present invention.
The present invention is described in more detail below.But following examples is only the simple example of the present invention, not generation Table or limitation the scope of the present invention, protection scope of the present invention are defined by claims.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
In order to better illustrate the present invention, technical scheme is readily appreciated, but it is not intended that to the present invention's Can practical range restriction.
Embodiment 1
Waste water caused by oil shale distillation process initially enters cooling gravity oil-removing pond, by being cooled to 30 DEG C, makes the oil in water Cohesion is separated out, using the difference of specific gravity of oil and water, 3h is settled, separates except particle in waste water larger oil and suspension.
Waste water after the gravitational settling that cools enters dissolved air flotation device, and aluminium polychloride is added in air supporting dosing area 50mg/L, the microbubble in utilizing dissolved air water caused by air-dissolving apparatus in air flotation zone, is bonded with the suspended particulate in water or oil Together, with air bubble buoyancy to the water surface, scum silica frost is formed, is removed oils and suspension in water.
The water outlet of air-floating apparatus adjusts PH to 12 by adding sodium hydroxide solution, and the ammonia nitrogen in waste water is with free ammonia and solid The presence of ammonia form is determined, as the PH of water>When 10, fixed ammonia is largely converted into free ammonia, and waste water enters ammonia still, ammonia still process tower bottom Low-pressure steam is passed through, low-pressure steam flow is 120kg/t water, and waste water, to below 200mg/L, returns simultaneously by rectifying removal of ammonia and nitrogen Receive more than 16% ammoniacal liquor.
Waste water after deamination enters biochemical system, initially enter regulating reservoir carry out water quality it is uniform, with sanitary sewage, rain The low concentration wastewaters such as water mix.Waste water after regulating reservoir homogeneous enters anaerobic pond, carries out anaerobic hydrolysis-acidification.Some hardly possible drops Solve organic matter and anaerobic hydrolysis reaction occurs, be converted into the organic matter relatively easily degraded, while partial organic substances anaerobism removes.
After anaerobic pond water outlet and backflow nitrification liquid mix in anoxic inlet channel, into anoxic pond, anti-nitration reaction occurs Denitrogenation is carried out, nitrate nitrogen is changed into nitrogen, and organic matter is removed as electron donor;Strengthened simultaneously by denitrification, a part Hardly degraded organic substance is converted into the organic matter relatively easily degraded under nitrate oxidation.Reactor equips ORP and pH, knot Nitrification liquid nitrate nitrogen, ammonia nitrogen concentration monitoring are closed, enters Mobile state adjustment mixed liquid recycle ratio, carries out denitrification reinforcing.Water outlet is flow automatically Into Aerobic Pond.
After anoxic pond water outlet enters Aerobic Pond, in the case where aerobic heterotroph acts on, oxidation of coal occurs and reacts, exhausted big portion in waste water The poisonous substances such as organic matter and cyanide such as phenol are divided to be removed, under nitrifier and nitrococcus effect, the mineralized nitrogen in waste water For nitrate nitrogen and nitrite nitrogen, water outlet supernatant after precipitation separates enters rear-mounted denitrification system and carries out total nitrogen removing.
Aerobic Pond water outlet enters coagulating basin, and part hardly degraded organic substance removes by coagulating sedimentation, after coagulating kinetics Waste water enter more medium filter, suspension further reduces, at the same to subsequent catalyst oxidation ensure public security.Water outlet enters smelly Oxygen catalytic oxidation system, under catalyst action, in waste water can not biodegradable organic matter be oxidized agent be oxidized to easy life The small organic molecule or part mineralising, waste water of thing degraded are purified.
Catalysis oxidation water outlet enters film desalination system, combines the unit desalination by ultrafiltration and counter-infiltration, reaches industrial reuse Water standard, Water circulation is circulated as plant area.
Embodiment 2
Waste water caused by oil shale distillation process initially enters cooling gravity oil-removing pond, by being cooled to 35 DEG C, makes the oil in water Cohesion is separated out, using the difference of specific gravity of oil and water, 4h is settled, separates except particle in waste water larger oil and suspension.
Waste water after the gravitational settling that cools enters dissolved air flotation device, and aluminium polychloride is added in air supporting dosing area 80mg/L, the microbubble in utilizing dissolved air water caused by air-dissolving apparatus in air flotation zone, is bonded with the suspended particulate in water or oil Together, with air bubble buoyancy to the water surface, scum silica frost is formed, is removed oils and suspension in water.
The water outlet of air-floating apparatus adjusts PH to 11 by adding sodium hydroxide solution, and the ammonia nitrogen in waste water is with free ammonia and solid The presence of ammonia form is determined, as the PH of water>When 10, fixed ammonia is largely converted into free ammonia, and waste water enters ammonia still, ammonia still process tower bottom Low-pressure steam is passed through, low-pressure steam flow is 120kg/t water, and waste water, to below 200mg/L, returns simultaneously by rectifying removal of ammonia and nitrogen Receive more than 16% ammoniacal liquor.
Waste water after deamination enters biochemical treatment system, and initially entering regulating reservoir, to carry out water quality uniform, dirty with life The low concentration wastewaters such as water, rainwater mix.Waste water after regulating reservoir homogeneous enters anaerobic pond, carries out anaerobic hydrolysis-acidification.One Anaerobic hydrolysis reaction occurs for a little hardly degraded organic substances, is converted into the organic matter relatively easily degraded, while partial organic substances anaerobism Remove.
After anaerobic pond water outlet and backflow nitrification liquid mix in anoxic inlet channel, into anoxic pond, anti-nitration reaction occurs Denitrogenation is carried out, nitrate nitrogen is changed into nitrogen, and organic matter is removed as electron donor;Strengthened simultaneously by denitrification, a part Hardly degraded organic substance is converted into the organic matter relatively easily degraded under nitrate oxidation.Reactor equips ORP and pH, knot Nitrification liquid nitrate nitrogen, ammonia nitrogen concentration monitoring are closed, enters Mobile state adjustment mixed liquid recycle ratio, carries out denitrification reinforcing.Water outlet is flow automatically Into Aerobic Pond.
After anoxic pond water outlet enters Aerobic Pond, in the case where aerobic heterotroph acts on, oxidation of coal occurs and reacts, exhausted big portion in waste water The poisonous substances such as organic matter and cyanide such as phenol are divided to be removed, under nitrifier and nitrococcus effect, the mineralized nitrogen in waste water For nitrate nitrogen and nitrite nitrogen, water outlet supernatant after precipitation separates enters rear-mounted denitrification system and carries out total nitrogen removing.
Aerobic Pond water outlet enters coagulating basin, and part hardly degraded organic substance removes by coagulating sedimentation, after coagulating kinetics Waste water can reach the standard of putting out slag water without further processing, be directly used in and put out slag(Solid after oil shale retorting is residual Slag).
Embodiment 3
Waste water caused by oil shale distillation process initially enters cooling gravity oil-removing pond, by being cooled to 40 DEG C, makes the oil in water Cohesion is separated out, using the difference of specific gravity of oil and water, 5h is settled, separates except particle in waste water larger oil and suspension.
Waste water after the gravitational settling that cools enters dissolved air flotation device, and aluminium polychloride is added in air supporting dosing area 100mg/L, the microbubble in utilizing dissolved air water caused by air-dissolving apparatus in air flotation zone, is bonded with the suspended particulate in water or oil Together, with air bubble buoyancy to the water surface, scum silica frost is formed, is removed oils and suspension in water.
The water outlet of air-floating apparatus adjusts PH to 12 by adding sodium hydroxide solution, and the ammonia nitrogen in waste water is with free ammonia and solid The presence of ammonia form is determined, as the PH of water>When 10, fixed ammonia is largely converted into free ammonia, and waste water enters ammonia still, ammonia still process tower bottom Low-pressure steam is passed through, low-pressure steam flow is 120kg/t water, and waste water, to below 200mg/L, returns simultaneously by rectifying removal of ammonia and nitrogen Receive more than 16% ammoniacal liquor.
Waste water after deamination enters biochemical system, initially enter regulating reservoir carry out water quality it is uniform, with sanitary sewage, rain The low concentration wastewaters such as water mix.Waste water after regulating reservoir homogeneous enters anaerobic pond, carries out anaerobic hydrolysis-acidification.Some hardly possible drops Solve organic matter and anaerobic hydrolysis reaction occurs, be converted into the organic matter relatively easily degraded, while partial organic substances anaerobism removes.
After anaerobic pond water outlet and backflow nitrification liquid mix in anoxic inlet channel, into anoxic pond, anti-nitration reaction occurs Denitrogenation is carried out, nitrate nitrogen is changed into nitrogen, and organic matter is removed as electron donor;Strengthened simultaneously by denitrification, a part Hardly degraded organic substance is converted into the organic matter relatively easily degraded under nitrate oxidation.Reactor equips ORP and pH, knot Nitrification liquid nitrate nitrogen, ammonia nitrogen concentration monitoring are closed, enters Mobile state adjustment mixed liquid recycle ratio, carries out denitrification reinforcing.Water outlet is flow automatically Into Aerobic Pond.
After anoxic pond water outlet enters Aerobic Pond, in the case where aerobic heterotroph acts on, oxidation of coal occurs and reacts, exhausted big portion in waste water The poisonous substances such as organic matter and cyanide such as phenol are divided to be removed, under nitrifier and nitrococcus effect, the mineralized nitrogen in waste water For nitrate nitrogen and nitrite nitrogen, water outlet supernatant after precipitation separates enters rear-mounted denitrification system and carries out total nitrogen removing.
Aerobic Pond water outlet enters coagulating basin, and part hardly degraded organic substance removes by coagulating sedimentation, after coagulating kinetics Waste water enter more medium filter, suspension further reduces, at the same to subsequent catalyst oxidation ensure public security.Water outlet enters smelly Oxygen catalytic oxidation system, under catalyst action, in waste water can not biodegradable organic matter be oxidized agent be oxidized to easy life The small organic molecule or part mineralising, waste water of thing degraded are purified, without can reach discharge standard through film desalting processing, directly Run in and put.
Applicant's statement, the method for the invention that the present invention is illustrated by above-described embodiment, but the invention is not limited in Aforesaid operations step, that is, do not mean that the present invention has to rely on aforesaid operations step and could implemented.The technology of art Personnel it will be clearly understood that any improvement in the present invention, the addition of equivalence replacement and auxiliary element to raw material selected by the present invention, Selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and disclosing.

Claims (10)

1. a kind of oil shale retorting waste water comprehensive processing technique, it is characterised in that oil shale retorting waste water is passed sequentially through into pre- place Reach reuse standard after reason, biochemical treatment, advanced treating and film desalination.
2. handling process as claimed in claim 1, it is characterised in that the pretreatment includes cooling gravity oil-removing, air supporting removes Oil and rectifying ammonia still process, waste water first passes around cooling gravity oil-removing and air supporting removes most suspended substances and oils, then through rectifying Ammonia still process method removes most ammonia-nitrogen, and water outlet enters biochemical treatment.
3. handling process as claimed in claim 2, it is characterised in that the cooling gravity oil-removing temperature is 30-40 DEG C, sedimentation Time is 3-5h;The cooling gravity oil-removing device therefor preferentially uses flat flow grease removal tank.
4. handling process as claimed in claim 2, it is characterised in that the oil removal by air bubbling uses cavitation air flotation and air-dissolving air-float One or two kinds of tandem compounds;
Added before the oil removal by air bubbling gas flotation aids be it is a kind of in polymer alumina, bodied ferric sulfate, aluminum sulfate or iron chloride or It is several;The oil removal by air bubbling medicament addition is 20-100mg/L.
5. handling process as claimed in claim 2, it is characterised in that the equipment of the rectifying ammonia still process is ammonia still, ammonia still Using alkali regulation PH to 10-12 is added, ammonia still thermal source is low-pressure steam or heat-conducting oil furnace for water inlet;
Preferably, ammonia still thermal source is low-pressure steam.
6. handling process according to any one of claims 1 to 5, it is characterised in that the biochemical treatment includes water Matter regulation, Anaerobic Treatment, anoxic treatment and Aerobic Process for Treatment, pretreated waste water enter after regulating reservoir progress water quality adjustment successively Into anaerobic pond, anoxic pond and Aerobic Pond, majority of organic pollutants is removed using the biochemical reaction of microorganism, water outlet enters Advanced treating.
7. handling process as claimed in claim 6, it is characterised in that the pretreated waste water in regulating reservoir with life Sewage or rainwater are mixed, so as to realize water quality adjustment, residence time 16-24h;
Waste water after the water quality adjustment is 6-15h in the anaerobic pond residence time, is 30-70h in the Aerobic Pond residence time;
The Aerobic Pond sludge reflux to Aerobic Pond water inlet reflux ratio is 1:1-4:1, Aerobic Pond effluent recycling to anoxic pond returns Stream is than being 1:1-3:1.
8. handling process as claimed in claim 6, it is characterised in that the advanced treating is urged including coagulation, filtering and ozone Change oxidation, bio-chemical effluent removes hardly degraded organic substance through coagulation, filtering and catalytic ozonation successively, and water outlet enters at film desalination Reason, sludge are handled into sludge treating system.
9. handling process as claimed in claim 8, it is characterised in that the catalytic ozonation reacts hydraulic detention time and is 10-60min, ozone dosage 0.1-0.2g/L;
It is KLCO-3, KLCO-4 that ozone catalyst is added in the ozone Oxidation Treatment.
10. handling process as claimed in claim 8, it is characterised in that the film desalting processing includes ultrafiltration, nanofiltration and reverse osmosis Two or three of combination in thoroughly;Effluent reuse after film desalting processing is up to standard.
CN201710464469.4A 2017-06-19 2017-06-19 A kind of oil shale retorting waste water comprehensive processing technique Withdrawn CN107417039A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108358390A (en) * 2018-02-11 2018-08-03 北京理工大学珠海学院 A kind of method of biochemical process processing oil shale production waste water
CN108529839A (en) * 2018-04-17 2018-09-14 北京三川世纪能源科技股份公司 A kind of drilling mud processing method and its system
CN109819869A (en) * 2019-04-10 2019-05-31 重庆市涪陵页岩气环保研发与技术服务中心 Shale gas oil base lime-ash cleaning treatment technology
CN111204922A (en) * 2020-01-13 2020-05-29 辽宁栢澳环保有限公司 Efficient denitrification process for meat food processing wastewater
CN111892235A (en) * 2020-06-24 2020-11-06 张建东 High-efficient degradation waste water zero discharge system
CN112537873A (en) * 2020-10-12 2021-03-23 太原理工大学 Treatment process and device for coal chemical wastewater containing fine dust

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