CN105645679A - Oily wastewater recycling and wastewater treatment system and treatment method thereof - Google Patents
Oily wastewater recycling and wastewater treatment system and treatment method thereof Download PDFInfo
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- CN105645679A CN105645679A CN201610006761.7A CN201610006761A CN105645679A CN 105645679 A CN105645679 A CN 105645679A CN 201610006761 A CN201610006761 A CN 201610006761A CN 105645679 A CN105645679 A CN 105645679A
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- waste water
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/05—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste oils
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses an oily wastewater recycling and wastewater treatment system and a treatment method thereof, belonging to the field of oily wastewater treatment. The system mainly comprises a raw water regulating tank, an ultrafiltration separation unit, an oil storage tank, an incinerator, a fume emission tower, a biogas storage tank, an anaerobic reactor, a three-phase separator, an aerobic reactor, a precipitation tank and a sludge concentration tank. The ultrafiltration separation unit adopts an organic-inorganic composite ultrafiltration membrane, can effectively utilize oil substances in the oily wastewater, implements waste recycling, and ensures the treated oily wastewater to be stably discharged after reaching the standard. The complete production system has the characteristics of energy saving, consumption reduction, pollution reduction and effect enhancement.
Description
Technical field
The invention belongs to oiliness sewage treatment field, specifically, relate to a kind of oily waste water resource and Waste Water Treatment and processing method thereof.
Background technology
Oily waste water wide material sources, specifically include that oil field waste, the waste water of petrochemical industry, food processing wastewater, metalworking fluid waste water and leather-making waste water etc. These industries are China water consumption rich anies influential family, Ye Shi China blowdown rich and influential family. The worsening shortages with water resource is day by day increased the weight of, in the urgent need to such waste water is processed along with environmental pollution. The form that based on oil is distributed in water, oily waste water can be divided into: can oil slick, dispersed oil, oil emulsion and dissolved oil four kinds.
At present, common traditional oiliness sewage treatment technology includes: centrifugal, oil removal, air supporting and biochemistry etc. Wherein, centrifugal, oil removal and By Bubble-floating Method are to oil slick and dispersed oil having good effect, but oil emulsion and dissolubility oil processing effect is poor, oil emulsion and dissolved oil are had certain effect by biochemical process, but require strict to oil concentration in water inlet, it is necessary to control oil content at below 40mg/L, oils in biochemical system is avoided to accumulate in a large number, thus causing that growth of microorganism is abnormal, biochemical system collapses, and causes that sewage disposal is difficult to stably reaching standard. It is thus desirable to more efficiently oil-water separation processes technique, it is ensured that oiliness sewage treatment stably reaching standard.
At present, carrying out oily waste water reclaiming ideal technique is membrane separation technique, and conventional includes: microfiltration, ultrafiltration and reverse osmosis. Wherein ultrafiltration relatively microfiltration has good separating effect, and operating cost is again far below reverse osmosis simultaneously, therefore obtains and studies widely. Such as, China Patent No.: ZL201420437621.1, patent name " a kind of emulsifying liquid waste water processes system " adopts the oil emulsion in organic ultra-filtration and separation emulsion, has good treatment effect. But organic pollution that its organic ultrafilter membrane adopted is easily subject in oily waste water, causes that diaphragm is limited for service life. Meanwhile, when water quality and quantity fluctuation is bigger, after hyperfiltration treatment, generally possibly together with the oils of higher concentration in waste water, subsequent biochemical system can be caused load impact.
Along with the development of film synthetic technology, except traditional organic membrane and inorganic ceramic film, the Organic-inorganic composite ultrafilter membrane part that to be increasingly becoming in field of membrane material important. It is good that Organic inorganic film not only has organic membrane pliability, the advantage that membrane flux is big, and the contamination resistance also with inoranic membrane is strong, the advantages such as mechanical strength is good, and high temperature resistant and resistance to biodegradability is strong.After adopting Organic-inorganic composite Ultra filtration membrane, few containing moisture in oil film dope, oil concentration content is high, is the material of a kind of high heating value.
Traditional method typically directly oils is transferred to mud mutually in, carry out filling or burning disposal as hazardous waste, cause a large amount of wastes of resource and being substantially increased of cost of sewage disposal. It is thorough that this is primarily due in traditional method oil-water separation, causes that in oils, moisture is too high, is not suitable for directly adopting burning method to process. And after Organic-inorganic composite Ultra filtration membrane, oil-water separation is obvious, can being fed directly in incinerator to burn containing oil film dope, liquid is burned to have to burn and thoroughly, is not produced the features such as secondary pollution. In water body after simultaneously separated, oil content is few, well below below the 40mg/L that biochemical system requires, will not biochemical system be impacted.
Generally except oil pollution beyond the region of objective existence in oily waste water, possibly together with a large amount of organic pollutions, for instance EDTA, Fructus Citri Limoniae acids etc., it is necessary to processing further could qualified discharge. Therefore, the recovery of oily waste water and process are typically required that employing multi-stage process series connection is integrated to be processed, oil recovery and wastewater treatment qualified discharge could be realized. Further strict along with environmental requirement, the resource of oily waste water and advanced treating have had become as a problem demanding prompt solution.
Summary of the invention
1, invention to solve the technical problem that
There is provided a kind of oily waste water resource and Waste Water Treatment and processing method thereof, to solve the existing problem being difficult to oil-water separation the utilization of resources containing waste water.
2, technical scheme
A kind of oily waste water resource and Waste Water Treatment, mainly include former water regulating reservoir, ultra-filtration and separation unit, oil storage tank, incinerator, fume emission tower, biogas storage tank, anaerobic reactor, three phase separator, aerobic reactor, sedimentation tank, sludge concentration tank; Described former water regulating reservoir is connected with pipeline by waste water delivery pump with ultra-filtration and separation unit, described ultra-filtration and separation unit is connected with pipeline by film dope delivery pump with oil storage tank, described oil storage tank is connected with pipeline by incinerator oil transfer pump with incinerator, and described incinerator is connected by pipeline with fume emission tower; Described ultra-filtration and separation unit is connected with pipeline by centrifugal pump with anaerobic reactor, described anaerobic reactor is connected by pipeline with aerobic reactor, the rear end of described aerobic reactor is connected by pipeline with the front end of sedimentation tank, the bottom of described sedimentation tank is connected with pipeline by sludge reflux pump with the front end of aerobic reactor, being terminated with pipeline after described sedimentation tank, the bottom of described sedimentation tank is connected with pipeline by residual sludge pump with sludge concentration tank; Described three phase separator is positioned at the inside of anaerobic reactor, and described three phase separator is connected by pipeline with biogas storage tank, and described biogas storage tank is connected with pipeline by gas pump with incinerator.
Above-mentioned waste water, after former water regulating reservoir, pumps into ultra-filtration and separation unit, and oil-containing dope is delivered in incinerator through oil storage tank and burns, and the flue gas of generation is discharged by fume emission tower; Waste water after hyperfiltration treatment flows into anaerobic reactor, after anaerobic reactor water outlet flows into aerobic reactor device, and discharged wastewater met the national standard after sedimentation tank precipitates.
Preferably, the ultrafilter membrane used in ultra-filtration and separation unit is Organic-inorganic composite ultrafilter membrane, and diaphragm has good oil-water separation performance, and diaphragm is periodically subject to backwash, and backwashing water flows into former water regulating reservoir;
Preferably, the pump that ultra-filtration and separation unit uses to incinerator is the centrifugal pump of resistance to viscosity, screw pump or gear pump;
Preferably, incinerator can adopt heat-conducting oil furnace, gas fired-boiler or steam boiler, and the heat of generation is utilized as thermal source by conduction oil and steam;
Preferably, arranging three phase separator in anaerobic reactor, the biogas of generation enters biogas storage tank, is delivered in incinerator by gas pump and assists burning;
Preferably, air hose is set bottom aerobic reactor and carries out aeration;
Preferably, the mud that sedimentation tank generates is back to aerobic reactor front end by base sludge reflux pump, and excess sludge is pumped in sludge concentration tank by residual sludge pump and processes.
A kind of method that oily waste water resource and Waste Water Treatment process waste water, the steps include:
The first step, oily waste water flows into former water regulating reservoir to carry out homogenizing and all measures, and then passes through waste water delivery pump and waste water is delivered to ultra-filtration and separation unit carries out oil-water separation;
Second step, a large amount of oils produced in film dope are delivered to oil storage tank, deliver in incinerator through oil transfer pump and burn, and the flue gas of generation is entered fume emission tower by bottom and realizes waste gas qualified discharge, and the heat of generation is utilized as thermal source after being absorbed by conduction oil;
3rd step, the waste water that ultra-filtration and separation unit produces enters anaerobic reactor and carries out anaerobic reaction, improves wastewater biodegradability, and the biogas of generation delivers to tank for sewage gas by three phase separator, and biogas is delivered to auxiliary in incinerator by gas pump and burned;
4th step, after anaerobic reaction, waste water flows into aerobic reactor, reduces oils and Organic substance in waste water further, and waste water flows into sedimentation tank; Sedimentation tank base sludge adopts sludge reflux pump to be partly refluxed to aerobic reactor front end, and part is delivered to sludge concentration tank by residual sludge pump and carries out concentration.
3, beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following remarkable result:
1, to solve oil-water separation in tradition oil water separation process thorough in the use of Organic-inorganic composite ultrafilter membrane, subsequent biochemical system loading is impacted bigger shortcoming, it is ensured that in biochemical water inlet, oils concentration is lower than 20mg/L, it is ensured that biochemical system stable operation;
2, arranging incinerator after oils is collected oils is burned, reduce oils and process cost of disposal 3000-4000 yuan/ton, meanwhile, oils is burned can produce about 2000 yuan/ton of incomes, it is achieved that the energy of refuse and resource, turns waste into wealth;
3, after " ultrafiltration+biochemistry " processes, oils in waste water can effectively be reduced to below 2mg/L, biochemical requirement (COD) can be reduced to 50mg/L, meets " integrated wastewater wastewater discharge standard " (GB8978--1996) one-level A standard.
Accompanying drawing explanation
Fig. 1 is the structural representation of oily waste water resource and Waste Water Treatment;
Wherein: 1, former water regulating reservoir, 2, waste water delivery pump, 3, ultra-filtration and separation unit, 4, film dope delivery pump, 5, oil storage tank, 6, incinerator oil transfer pump, 7, incinerator, 8, fume emission tower, 9, centrifugal pump, 10, anaerobic reactor, 11, three phase separator, 12, biogas storage tank, 13, gas pump, 14, aerobic reactor, 15, sedimentation tank, 16, sludge reflux pump, 17, residual sludge pump, 18, sludge concentration tank.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the present invention is described in detail.
Embodiment 1
As shown in Figure 1, a kind of oily waste water resource of the present embodiment and Waste Water Treatment, including former water regulating reservoir 1, ultra-filtration and separation unit 3, oil storage tank 5, incinerator 7, fume emission tower 8, biogas storage tank 12, anaerobic reactor 10, three phase separator 11, aerobic reactor 14, sedimentation tank 15, sludge concentration tank 18;Described former water regulating reservoir 1 is connected with pipeline by waste water delivery pump 2 with ultra-filtration and separation unit 3, described ultra-filtration and separation unit 3 is connected with pipeline by film dope delivery pump 4 with oil storage tank 5, described oil storage tank 5 is connected with pipeline by incinerator oil transfer pump 6 with incinerator 7, and described incinerator 7 is connected by pipeline with fume emission tower 8; Described ultra-filtration and separation unit 3 is connected with pipeline by centrifugal pump 9 with anaerobic reactor 11, described anaerobic reactor 10 is connected by pipeline with aerobic reactor 14, the rear end of described aerobic reactor 14 is connected by pipeline with the front end of sedimentation tank 15, the bottom of described sedimentation tank 15 is connected with pipeline by sludge reflux pump 16 with the front end of aerobic reactor 14, being terminated with pipeline after described sedimentation tank 15, the bottom of described sedimentation tank 15 is connected with pipeline by residual sludge pump 17 with sludge concentration tank 18; Described three phase separator 11 is positioned at the inside of anaerobic reactor 10, and described three phase separator 11 is connected by pipeline with biogas storage tank 12, and described biogas storage tank 12 is connected with pipeline by gas pump 13 with incinerator 7.
Film dope delivery pump 4 therein and incinerator oil transfer pump 6 are the centrifugal pump of resistance to stickiness, and incinerator 7 adopts heat-conducting oil furnace, and the heat of generation is utilized as thermal source by conduction oil. Arranging three phase separator 11 in anaerobic reactor 10, the biogas of generation enters biogas storage tank 12, is delivered in incinerator 7 by gas pump 13 and assists burning;
The work process of a kind of oily waste water resource and Waste Water Treatment is: the oily waste water former water regulating reservoir 1 of inflow carries out homogenizing and all measures, then pass through waste water delivery pump 2 waste water is delivered to ultra-filtration and separation unit 3 to carry out oil-water separation, the a large amount of oils produced in film dope are delivered to oil storage tank 5, deliver in incinerator 7 through oil transfer pump 6 and burn, the flue gas produced is entered fume emission tower 8 by bottom and realizes waste gas qualified discharge, and the heat of generation is utilized as thermal source after being absorbed by conduction oil; The waste water that ultra-filtration and separation unit produces enters anaerobic reactor 10 and carries out anaerobic reaction, improves wastewater biodegradability, and the biogas of generation delivers to tank for sewage gas 12 by three phase separator 11, and biogas is delivered to auxiliary in incinerator 7 by gas pump 13 and burned; After anaerobic reaction, waste water flows into aerobic reactor 14, reduces oils and Organic substance in waste water further, and waste water flows into sedimentation tank 15; Sedimentation tank base sludge adopts sludge reflux pump 16 to be partly refluxed to aerobic reactor 14 front end, and part is delivered to sludge concentration tank 18 by residual sludge pump 17 and carries out concentration.
Embodiment 2
Basic structure is with embodiment 1, and wherein, the ultrafilter membrane used in ultra-filtration and separation unit 3 is Organic-inorganic composite ultrafilter membrane, and diaphragm has good oil-water separation performance, and diaphragm is periodically subject to backwash, and backwashing water flows into former water regulating reservoir 1.
Embodiment 3
Basic structure is with embodiment 1, wherein, and the screw pump that pump is resistance to viscosity used in ultra-filtration and separation unit 3 to incinerator 7 or gear pump.
Embodiment 4
Basic structure is with embodiment 1, and wherein, incinerator 7 adopts gas fired-boiler or steam boiler, and the heat of generation is utilized as thermal source by conduction oil and steam;
Embodiment 5
Basic structure is with embodiment 1, and wherein, incinerator 7 adopts steam boiler, and the heat of generation is utilized as thermal source by steam.
Embodiment 6
Basic structure, with embodiment 1, wherein arranges air hose and carries out aeration bottom aerobic reactor 14; The mud that sedimentation tank 13 generates is back to aerobic reactor 14 front end by base sludge reflux pump 16, and excess sludge is pumped in sludge concentration tank 18 by residual sludge pump 17 and processes.
Below schematically creation and embodiment thereof to the present invention is described, and protection scope of the present invention includes but not limited to the description above. Shown in accompanying drawing is also one of embodiment of the invention, and actual structure is not limited thereto. So; if those of ordinary skill in the art is subject to the enlightenment of the present invention; when without departing from the creation objective of the present invention, design the frame mode similar to technical scheme and embodiment without creationary, the protection domain of this patent all should be belonged to.
Claims (7)
1. an oily waste water resource and Waste Water Treatment, it is characterised in that: mainly include former water regulating reservoir (1), ultra-filtration and separation unit (3), oil storage tank (5), incinerator (7), fume emission tower (8), biogas storage tank (12), anaerobic reactor (10), three phase separator (11), aerobic reactor (14), sedimentation tank (15), sludge concentration tank (18), described former water regulating reservoir (1) is connected with pipeline by waste water delivery pump (2) with ultra-filtration and separation unit (3), described ultra-filtration and separation unit (3) is connected with pipeline by film dope delivery pump (4) with oil storage tank (5), described oil storage tank (5) is connected with pipeline by incinerator oil transfer pump (6) with incinerator (7), and described incinerator (7) is connected by pipeline with fume emission tower (8), described ultra-filtration and separation unit (3) is connected with pipeline by centrifugal pump (9) with anaerobic reactor (11), described anaerobic reactor (10) is connected by pipeline with aerobic reactor (14), the rear end of described aerobic reactor (14) is connected by pipeline with the front end of sedimentation tank (15), the bottom of described sedimentation tank (15) is connected with pipeline by sludge reflux pump (16) with the front end of aerobic reactor (14), it is terminated with pipeline after described sedimentation tank (15), the bottom of described sedimentation tank (15) is connected with pipeline by residual sludge pump (17) with sludge concentration tank (18), described three phase separator (11) is positioned at the inside of anaerobic reactor (10), described three phase separator (11) is connected by pipeline with biogas storage tank (12), and described biogas storage tank (12) is connected with pipeline by gas pump (13) with incinerator (7).
2. a kind of oily waste water resource according to claim 1 and Waste Water Treatment, it is characterised in that: the ultrafilter membrane used in described ultra-filtration and separation unit (3) is Organic-inorganic composite ultrafilter membrane.
3. a kind of oily waste water resource according to claim 1 and Waste Water Treatment, it is characterised in that: described film dope delivery pump (4) and incinerator oil transfer pump (6) they are the centrifugal pump of resistance to viscosity, screw pump or gear pump.
4. a kind of oily waste water resource according to claim 1 and Waste Water Treatment, it is characterised in that: described incinerator (7) is heat-conducting oil furnace, gas fired-boiler or steam boiler.
5. a kind of oily waste water resource according to any one of claim 1-4 and Waste Water Treatment, it is characterised in that: aerobic reactor (14) bottom arranges aerator.
6. a kind of oily waste water resource according to claim 5 and Waste Water Treatment, it is characterised in that: described aerator is air hose.
7. the method that a kind of oily waste water resource according to claim 1 and Waste Water Treatment process waste water, the steps include:
The first step: oily waste water flows into former water regulating reservoir (1) to carry out homogenizing and all measure, then passes through waste water delivery pump (2) and waste water is delivered to ultra-filtration and separation unit (3) carries out oil-water separation;
Second step, the a large amount of oils produced in film dope are delivered to oil storage tank (5), deliver in incinerator (7) through oil transfer pump (6) and burn, the flue gas produced is entered fume emission tower (8) by bottom and realizes waste gas qualified discharge, and the heat of generation is utilized as thermal source after being absorbed by conduction oil;
3rd step, the waste water that ultra-filtration and separation unit produces enters anaerobic reactor (10) and carries out anaerobic reaction, improve wastewater biodegradability, the biogas produced delivers to tank for sewage gas (12) by three phase separator (11), and biogas is delivered to auxiliary in incinerator (7) by gas pump (13) and burned;
4th step, after anaerobic reaction, waste water flows into aerobic reactor (14), reduces oils and Organic substance in waste water further, and waste water flows into sedimentation tank (15); Sedimentation tank base sludge adopts sludge reflux pump (16) to be partly refluxed to aerobic reactor (14) front end, and part is delivered to sludge concentration tank (18) by residual sludge pump (17) and carries out concentration.
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