CN104291516A - Oil refining and chemical sewage processing and recovering equipment and method thereof - Google Patents
Oil refining and chemical sewage processing and recovering equipment and method thereof Download PDFInfo
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- CN104291516A CN104291516A CN201410421486.6A CN201410421486A CN104291516A CN 104291516 A CN104291516 A CN 104291516A CN 201410421486 A CN201410421486 A CN 201410421486A CN 104291516 A CN104291516 A CN 104291516A
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- 239000010865 sewage Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000007670 refining Methods 0.000 title claims abstract description 34
- 239000000126 substance Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 184
- 239000012528 membrane Substances 0.000 claims abstract description 101
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 60
- 238000010612 desalination reaction Methods 0.000 claims abstract description 50
- 238000007906 compression Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000001728 nano-filtration Methods 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 9
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 7
- 230000008025 crystallization Effects 0.000 claims abstract description 7
- 238000003889 chemical engineering Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 28
- 238000005188 flotation Methods 0.000 claims description 21
- 238000001471 micro-filtration Methods 0.000 claims description 20
- 238000000108 ultra-filtration Methods 0.000 claims description 20
- 239000012510 hollow fiber Substances 0.000 claims description 19
- 238000005374 membrane filtration Methods 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 19
- 230000015556 catabolic process Effects 0.000 claims description 14
- 238000006731 degradation reaction Methods 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 238000011033 desalting Methods 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 2
- 238000006065 biodegradation reaction Methods 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 29
- 238000004064 recycling Methods 0.000 description 7
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 6
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 235000019600 saltiness Nutrition 0.000 description 4
- 235000002639 sodium chloride Nutrition 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000004071 biological effect Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 102000003939 Membrane transport proteins Human genes 0.000 description 2
- 108090000301 Membrane transport proteins Proteins 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000010442 halite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
- 239000003403 water pollutant Substances 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
- 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
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/44—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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
-
- 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
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
-
- 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
- C02F3/02—Aerobic processes
- C02F3/025—Biological purification using sources of oxygen other than air, oxygen or ozone
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides oil refining and chemical sewage processing and recovering equipment and a method thereof. The equipment comprises a mixing reaction tank, an anti-blocking air-floatation pool, a multistage matched biological filter tank, a clean water tank, a precision filter, an ejector, an ozone generator, a mixer, an intermediate pool, a biology activated carbon filter and a clean water reservoir which are connected in order by a mechanical mode. If desalination is not required, the reuse water can be fed into an industrial pipe network for use, if desalination is required, a hollow ultrafilter membrane or a micro filter membrane and a reverse osmosis membrane, a desalinized water pool and the reverse osmosis membrane or the nanofiltration membrane and a machinery steam compression system are added. The multistage matched biological filter tank has effects of biodegradation of organic matter and filtering, purifying degree of polluted water can be increased, the hollow ultrafilter membrane or the micro filter membrane and the reverse osmosis membrane are employed for desalination treatment on the polluted water, the reuse water is better adapted to industrial application, and condensation and crystallization treatment can be carried out on the polluted water by the reverse osmosis membrane or the nanofiltration membrane and the machinery steam compression system, so that waste water is not discharged to outside.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to process recovery system and the method for a kind of oil refining and chemical engineering sewage.
Background technology
There are nearly 50 national serious water shortages in the current whole world, and united state of China confirms as one of serious water shortage country.But China about has hundreds of hundred million tons not utilize through the utilizable sewage of advanced treatment to be every year discharged, and causes the waste of water resources, wherein oil refining, chemical industry use water rich and influential family, meanwhile, is also the rich and influential family polluting large natural environment.Therefore, realizing sewage recycling has been the task of top priority.
The formation of so-called " sewage " is formed through production process is contaminated by fresh water.We will utilize sewage just dirty water pollutant must be removed as much as possible, and pollutent mainly contains: oil, organism, suspended substance, organic salt etc.
The patent No. " CN200520130414.2 " " recovery and utilization equipment of oil refining and chemical engineering sewage " adopts reverse osmosis membrane processing sewage, the degree of purification of polluted water obtains lifting to a certain degree, produce water also can recycle, but dense water often can not qualified discharge or do not allow discharge, sewage discharge process problem does not thoroughly solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide the process recovery system of a kind of oil refining and chemical engineering sewage, the basis of the patent No. " CN200520130414.2 " " recovery and utilization equipment of oil refining and chemical engineering sewage " concentrates the dense water of reverse osmosis unit again through reverse osmosis membrane or nanofiltration membrane, produce water and enter desalination pond, dense water enters mechanical vapor-compression system, the principle adopting vapour compression concentration and evaporation is condensed water and solid crystal dense water evaporative condenser, condensed water sends into desalination pond, xln recycles or presses solid waste process, reach the object of not outwardly waste discharge.
For reaching above-mentioned purpose, the process recovery system of a kind of oil refining of the present invention and chemical engineering sewage, this equipment comprises the following device be mechanically linked in sequence together: hybrid reaction groove, multistagely join biological filter, anti-blocking air flotation pool, clean water basin, accurate filter, ejector, ozonizer, mixing tank, intermediate pool, biologic active carbon filtration device, water purifying tank, hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane apparatus, wherein on the ozonizer outlet that is attempted by anti-blocking air flotation pool respectively and ejector, this device also comprises reverse osmosis membrane or nanofiltration membrane and mechanical vapor-compression system, the water outlet of reverse osmosis membrane apparatus is divided into two pipelines, one of them pipeline and reverse osmosis membrane or nanofiltration membrane and mechanical vapor-compression system link together, another pipeline and desalination pond link together.
Wherein multistage biological filter of joining comprises inlet mouth, water-in and at least two packing layers.
Wherein hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane link together in a series arrangement.
Wherein the water outlet of water purifying tank is divided into two pipelines, and the water-in of one of them pipeline and hollow fiber ultrafiltration film or microfiltration membrane links together in a series arrangement, and another pipeline is connected with industrial pipe network.
Wherein reverse osmosis membrane or nanofiltration membrane and mechanical vapor-compression system link together in a series arrangement.
Wherein the water outlet of reverse osmosis membrane or nanofiltration membrane and mechanical vapor-compression system and desalination pond link together.
Wherein anti-blocking air flotation pool and multistagely join biological filter location swap.
A process recovery method for oil refining and chemical engineering sewage, comprises the following steps:
Chemical coagulation: through second-stage treatment oil refining, chemical engineering sewage or always enter in hybrid reaction groove, hybrid reaction abundant with added medicament, after generating alumen ustum, enter multistage biological filter of joining and carry out biochemical treatment and filteration, enter afterwards in anti-blocking air flotation pool and be separated, the water outlet of anti-blocking air flotation pool adds ozone and is oxidized, and enters clean water basin after degradation period;
Secondary filter: the water flowed out by clean water basin promotes to enter in accurate filter through pump and filters, water outlet enters in ejector, add the ozone that ozonizer produces in ejector after, enter into mixing tank and react, after reaction, enter intermediate pool;
Biological degradation and absorption: the water outlet of intermediate pool enters biologic active carbon filtration device and carries out biological degradation again and absorption, and then its water outlet enters in water purifying tank;
Desalting treatment: the water outlet of water purifying tank enters into hollow fiber ultrafiltration or microfiltration membrane group device carries out oil removing and continues to reduce suspended substance, then carries out desalination through boosting to reverse osmosis membrane group device;
Condensing crystal process: the dense water of reverse osmosis membrane apparatus concentrates through reverse osmosis membrane or nanofiltration membrane again, produce water and enter desalination pond, dense water enters mechanical steam compression system, and the condensed water that mechanical vapor-compression system produces enters desalination pond, the crystallization otherwise processed of generation.
The equipment adopted in technical process is all set for the removal of pollutent, and attaches most importance to organic pollutant.As can be seen from Table 1, different treating processess can only remove the organism of different molecular weight section.
Table 1 technological process and explanation
The invention difference from existing technology is that the present invention achieves following technique effect:
Present device by adding reverse osmosis membrane or nanofiltration membrane and mechanical vapor-compression system after reverse osmosis membrane apparatus, the dense water of reverse osmosis unit is concentrated through reverse osmosis membrane or nanofiltration membrane again, produce water and enter desalination pond, dense water enters mechanical vapor-compression system, the principle adopting vapour compression concentration and evaporation is condensed water and solid crystal dense water evaporative condenser, condensed water sends into desalination pond, and xln recycles or by solid waste process, reaches not the object of outwardly waste discharge.
Reverse osmosis membrane effect above carries out desalination to the water outlet of device before, making it produce water is de-salted water, dense water is Halite water, for increasing reuse water water production rate, also later crystallization burden is reduced, add again one section of reverse osmosis membrane to the last period reverse osmosis membrane dense water concentrate further, the dense water yield is reduced further, and nanofiltration membrane also can play concentrating and desalinating effect.
The ton Chemicals water loss external at petrochemical system is starkly lower than China, and as processed 1 ton of crude oil water loss abroad below 0.5 ton of fresh water, and China is on average about 1.5.If sewage not reuse, ton crude oil processing water loss be down to less than 1.0 be do not have possible.That is reusing sewage is water-saving and emission-reducing, reduces the Bi Hangzhi road of ton crude oil water loss.Its economic benefit is also fairly obvious, and general city fresh water is all more than 2.00 yuan, and some place is higher.And reusing sewage cost (comprising the expenses such as depreciation) is generally between 0.65-0.70 unit ton (not desalination), general medium-sized petrochemical plant reusing sewage water field scale is in 12000-24000 ton/sky, for 12000 tons/day, fresh water deducts cost 0.70 yuan/ton by 2.00 yuan/ton, for profit per ton 1.40/ yuan of ton, within 1 year, can save water rate is 613.2 ten thousand yuan/year.
What more than calculate is economic benefit without embrane method desalination, if the economic benefit after desalination is more obvious.General de-salted water is 70% of sewage total amount, so desalination water yield is 12000*0.70 ton/sky, such reuse water cost is greatly between 2.00-2.50 yuan/ton, and desalination water price is between 8.50-13.00 yuan/ton, calculate with its minimum rate: 12000*0.70* (8.50-2.00) * 365=1992.9 ten thousand yuan/year.So, within 1 year, will save nearly 20,000,000 yuan, the annual sewage discharge also reducing 4,380,000 tons is simultaneously gone in rivers,lakes and seas.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of the process recovery system of oil refining of the present invention and chemical engineering sewage;
Fig. 2 is the structural representation of the process recovery system of prior art oil refining and chemical engineering sewage;
Fig. 3 is the structural representation that the embodiment of the present invention 1 uses equipment;
Fig. 4 is the equipment work schema of the embodiment of the present invention 1;
Fig. 5 is the equipment work schema of the embodiment of the present invention 2;
Fig. 6 is the equipment work schema of the embodiment of the present invention 3.
Embodiment
Below in conjunction with drawings and Examples, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
As shown in Figure 2, the process recovery system of oil refining of the present invention and chemical engineering sewage, comprise the following device be mechanically linked in sequence together: hybrid reaction groove 1, multistagely join biological filter 3, anti-blocking air flotation pool 2, clean water basin 4, accurate filter 5, ejector 6, ozonizer 7, mixing tank 8, intermediate pool 9, biologic active carbon filtration device 10, water purifying tank 11, hollow fiber ultrafiltration film or microfiltration membrane 12 and reverse osmosis membrane apparatus 13, wherein on ozonizer 7 outlet that is attempted by anti-blocking air flotation pool 2 respectively and ejector 6, the water outlet of reverse osmosis membrane apparatus 13 is divided into two pipelines, one of them pipeline and reverse osmosis membrane or nanofiltration membrane 15 and mechanical vapor-compression system 16 link together, another pipeline and desalination pond 14 link together, water outlet and the desalination pond 14 of reverse osmosis membrane or nanofiltration membrane 15 and mechanical vapor-compression system 16 link together.; Multistage biological filter 3 of joining comprises inlet mouth, water-in and at least two packing layers, and hollow fiber ultrafiltration film or microfiltration membrane 12 link together in a series arrangement with reverse osmosis membrane 13; The water outlet of water purifying tank 11 is divided into two pipelines, and the water-in of one of them pipeline and hollow fiber ultrafiltration film or microfiltration membrane 12 links together in a series arrangement, and another pipeline is connected with industrial pipe network; Reverse osmosis membrane or nanofiltration membrane 15 link together in a series arrangement with mechanical vapor-compression system 16.
Compared to existing installation as shown in Figure 1, present device adds reverse osmosis membrane or nanofiltration membrane 15 and mechanical vapor-compression system 16.
A process recovery method for oil refining and chemical engineering sewage, comprises the following steps:
Chemical coagulation: through second-stage treatment oil refining, chemical engineering sewage or always enter in hybrid reaction groove 1, hybrid reaction abundant with added medicament, after generating alumen ustum, enter multistage biological filter 3 of joining and carry out biochemical treatment and filteration, enter afterwards in anti-blocking air flotation pool 2 and be separated, the water outlet of anti-blocking air flotation pool 2 adds ozone and is oxidized, and enters clean water basin 4 after degradation period;
Secondary filter: the water flowed out by clean water basin 4 promotes to enter in accurate filter 5 through pump and filters, water outlet enters in ejector 6, add the ozone that ozonizer 7 produces in ejector 6 after, enter into mixing tank 8 and react, after reaction, enter intermediate pool 9;
Biological degradation and absorption: the water outlet of intermediate pool 9 enters biologic active carbon filtration device 10 and carries out biological degradation again and absorption, and then its water outlet enters in water purifying tank 11;
Desalting treatment: the water outlet of water purifying tank 11 enters into hollow fiber ultrafiltration or microfiltration membrane group device 12 carries out oil removing and continues to reduce suspended substance, then carries out desalination through boosting to reverse osmosis membrane group device 13;
Condensing crystal process: the dense water of reverse osmosis membrane apparatus 13 is again through reverse osmosis membrane or nanofiltration membrane 15 filtering and concentrating, produce water and enter desalination pond 14, dense water enters mechanical steam compression system 16, and the condensed water that mechanical vapor-compression system 16 produces enters desalination pond 14, the crystallization otherwise processed of generation.
Embodiment 1:
As shown in Figure 3, there is shown the oil refining for implementing method according to a first embodiment of the present invention and chemical engineering sewage recycling equipment, this equipment comprises the hybrid reaction groove 1 be connected in turn, anti-blocking air flotation pool 2, multistagely joins biological filter 3, clean water basin 4, High-efficient Accurate Filter 5, ejector 6, ozonizer 7, mixing tank 8, intermediate pool 9, biological activity char filter 10, water purifying tank 11, make use of if reuse water does not need desalination just can enter industrial pipe network.If need desalination to increase hollow fiber ultrafiltration film (or hollow microfiltration membrane) 12 and RO reverse osmosis membrane 13 and desalination pond 14 again.
The oil refining of the embodiment of the present invention 1 and the workflow of chemical engineering sewage recycling equipment be as shown in Figure 4:
A, enter into hybrid reaction groove 1 through the oil refining of second-stage treatment, chemical engineering sewage, after generating alumen ustum with added medicament polymerize aluminum chloride (PAC) and the abundant hybrid reaction of the polyacrylamide after being hydrolyzed (PAM), enter anti-blocking air flotation pool 2 and be separated.
B, anti-blocking air flotation pool 2 water outlet, according to water quality situation, directly can enter and multistagely join biological filter 3, also can add part ozone, enter multistagely to join biological filter 3 after degradation period, carry out biochemical treatment and filteration.Multistagely join biological filter 3, water outlet enters clean water basin 4.
C, clean water basin 4 water promote through pump and enter into High-efficient Accurate Filter 5, after High-efficient Accurate Filter 5 filters, water outlet enters into ejector 6, after ejector 6 adds the O3 that ozonizer 7 produces, enter into mixing tank 8 hybrid reaction, after reaction, enter intermediate pool 9.
D, intermediate pool 9 water enter biologic active carbon filtration device 10 through pump, and in its biological degradation and absorption again, biologic active carbon filtration device 10 water outlet enters water purifying tank 11.If saltiness is not high in sewage, when there is no desalination requirement, in water purifying tank 11, water just can send industrial pipe network or directly enter circulating cooling make-up water reuse.If desired desalination or partially desalted, so also needs through desalting treatment.
E, if desired, also can carry out desalting treatment: in water purifying tank 11, water extraction liter enters hollow fiber ultrafiltration (UF) or micro-filtration (MF) film group 12, carrying out oil removing and continue to reduce suspended substance, then carrying out desalination through boosting to RO reverse osmosis membrane group 13.The concentrated water drainage produced falls, and the product water of reverse osmosis membrane 13 enters desalination pond 14, then to send between boiler chemical water treatment vehicle etc. to use water spot.Or partially desalted water removes pond 11, the water purification blending into low saline salinity with former water purification send circulating cooling make-up water.
Embodiment 2:
As shown in Figure 2, there is shown the oil refining for implementing method according to a second embodiment of the present invention and chemical engineering sewage recycling equipment, this equipment comprises the hybrid reaction groove 1 be connected in turn, multistagely join biological filter 3, air flotation pool 2, clean water basin 4, High-efficient Accurate Filter 5, ejector 6, ozonizer 7, mixing tank 8, intermediate pool 9, biological activity char filter 10, water purifying tank 11, make use of if reuse water does not need desalination just can enter industrial pipe network.If need desalination to increase hollow fiber ultrafiltration film (or hollow microfiltration membrane) 12 and RO reverse osmosis membrane 13 and desalination pond 14 again.
The oil refining of the embodiment of the present invention 2 and the workflow of chemical engineering sewage recycling equipment be as shown in Figure 5:
A, enter hybrid reaction groove 1 through the oil refining of second-stage treatment, chemical engineering sewage, medicament polymerize aluminum chloride (PAC), polyacrylamide (PAM) and the sewage added is reacted and generates alumen ustum, enter again multistagely to join biological filter 3, biological treatment Organic substance in water and filter suspended substance etc.
B, multistagely join biological filter 3 water outlet and enter in air flotation pool 2 and be separated.Water outlet enters clean water basin 4.
C, clean water basin 4 water promote through pump and enter into High-efficient Accurate Filter 5, carry out water filtration, reduce the laggard ejector 6 of suspended substance, add the O3 produced by ozonizer 7, hybrid reaction in mixing tank 8, enter intermediate pool 9 after reaction at ejector 6.
D, intermediate pool 9 water promote into biologic active carbon filtration device 10 through pump, biological degradation and adsorb organic compound again.Biologic active carbon filtration device 10 water outlet enters water purifying tank 11.If sewage saltiness is not high, when requiring without desalination, the reuse water in water purifying tank 11 just can send industrial pipe network or directly enter circulating cooling make-up water.If desired desalination or partially desaltedly also to need through desalting treatment.
E, desalting treatment: the water in water purifying tank 11 carries out desalination through boosting to RO reverse osmosis membrane group 13 through promoting after super (micro-) filter membrane group 12 of hollow removes oil and suspended substance, the de-salted water produced enters desalination pond 14, then send between boiler chemical waterwheel, or partly removing pond 11 blends into low saline salinity water purification.
Embodiment 3:
As shown in Figure 1, there is shown the oil refining for implementing method according to a third embodiment of the present invention and chemical engineering sewage recycling equipment, this equipment comprises the hybrid reaction groove 1 be connected in turn, multistagely join biological filter 3, anti-blocking air flotation pool 2, clean water basin 4, High-efficient Accurate Filter 5, ejector 6, ozonizer 7, mixing tank 8, intermediate pool 9, biological activity char filter 10, water purifying tank 11, hollow fiber ultrafiltration film (or hollow microfiltration membrane) 12, RO reverse osmosis membrane 13, desalination pond 14, reverse osmosis (nanofiltration) film 15, mechanical vapor-compression system 16.
The oil refining of the embodiment of the present invention 3 and the workflow of chemical engineering sewage recycling equipment be as shown in Figure 6:
A, enter hybrid reaction groove 1 through the oil refining of second-stage treatment, chemical engineering sewage, medicament polymerize aluminum chloride (PAC), polyacrylamide (PAM) and the sewage added is reacted and generates alumen ustum, go forward side by side and multistagely join biological filter 3, biological treatment Organic substance in water and filter suspended substance etc.
B, multistagely join biological filter 3 water outlet and enter in anti-blocking air flotation pool 2 and be separated.Water outlet enters clean water basin 4.
C, clean water basin 4 water promote through pump and enter into High-efficient Accurate Filter 5, carry out water filtration, reduce the laggard ejector 6 of suspended substance, add the O3 produced by ozonizer 7, hybrid reaction in mixing tank 8, enter intermediate pool 9 after reaction at ejector 6.
D, intermediate pool 9 water promote into biologic active carbon filtration device 10 through pump, biological degradation and adsorb organic compound again.Biologic active carbon filtration device 10 water outlet enters water purifying tank 11.If sewage saltiness is not high, when requiring without desalination, the reuse water in water purifying tank 11 just can send industrial pipe network or directly enter circulating cooling make-up water.If desired desalination or partially desaltedly also to need through desalting treatment.
E, desalting treatment: the water in water purifying tank 11 carries out desalination through boosting to RO reverse osmosis membrane group 13 through promoting after super (micro-) filter membrane group 12 of hollow removes oil and suspended substance, and the de-salted water of generation enters desalination pond 14.
The dense water of f, reverse osmosis membrane group 13 filters through reverse osmosis (nanofiltration) film 15 again, concentrated further, produce water and enter desalination pond 14, dense water enters mechanical steam compression system 16, carry out evaporative crystallization, the condensed water that mechanical vapor-compression system 16 produces enters desalination pond 14, the crystallization otherwise processed of generation.
Lectotype selection:
The capacity of equipment of the inventive method flow process by 720t/ days (30t/h) scales to 24000t/ days every day (1000t/h) not etc.Fairly largely some production lines can be adopted to compose in parallel.
Through the sewage of hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane processing, produce water can directly recycle, but dense water often can not qualified discharge or do not allow discharge, when considering zero release, in hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane apparatus rear end, concentration systems is set, the dense water produced after reverse osmosis membrane desalination, the technique arranging reverse osmosis or nanofiltration concentrates, the waste water water yield of supersalinity is reduced gradually, mechanical steam compression system is entered when dense water saltiness acquires a certain degree, the advanced interchanger of dense water, heat exchange is carried out with the distilled water produced in vaporizer, remove O
2and CO
2gas, the dense water after heat exchange enters in evaporation concentrator and carries out evaporation concentration, and dense water is condensed water and solid crystal by evaporative condenser.
Illustrated as can be seen from above, multistage biological filter of joining has biological degradation organism and filters two kinds of effects, thus improves the degree of purification of polluted water.Adopt hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane to carry out desalting treatment to polluted water, make reuse water be suitable for industrial application.Owing to have employed reverse osmosis membrane or nanofiltration membrane and mechanical vapor-compression system, condensing crystal process is carried out to polluted water again, outwardly waste discharge can be accomplished not.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. a process recovery system for oil refining and chemical engineering sewage, this equipment comprises the following device be mechanically linked in sequence together: hybrid reaction groove (1), multistagely join biological filter (3), anti-blocking air flotation pool (2), clean water basin (4), accurate filter (5), ejector (6), ozonizer (7), mixing tank (8), intermediate pool (9), biologic active carbon filtration device (10), water purifying tank (11), hollow fiber ultrafiltration film or microfiltration membrane (12) and reverse osmosis membrane apparatus (13), wherein on ozonizer (7) outlet that is attempted by anti-blocking air flotation pool (2) respectively and ejector (6), it is characterized in that: this device also comprises reverse osmosis membrane or nanofiltration membrane (15) and mechanical vapor-compression system (16), the water outlet of reverse osmosis membrane apparatus (13) is divided into two pipelines, one of them pipeline and reverse osmosis membrane or nanofiltration membrane (15) and mechanical vapor-compression system (16) link together, and another pipeline and desalination pond (14) link together.
2. the process recovery system of oil refining according to claim 1 and chemical engineering sewage, is characterized in that: multistage biological filter (3) of joining comprises inlet mouth, water-in and at least two packing layers.
3. the process recovery system of oil refining according to claim 1 and chemical engineering sewage, is characterized in that: hollow fiber ultrafiltration film or microfiltration membrane (12) link together in a series arrangement with reverse osmosis membrane (13).
4. the process recovery system of oil refining according to claim 1 and chemical engineering sewage, it is characterized in that: the water outlet of water purifying tank (11) is divided into two pipelines, the water-in of one of them pipeline and hollow fiber ultrafiltration film or microfiltration membrane (12) links together in a series arrangement, and another pipeline is connected with industrial pipe network.
5. the process recovery system of oil refining according to claim 1 and chemical engineering sewage, is characterized in that: reverse osmosis membrane or nanofiltration membrane (15) link together in a series arrangement with mechanical vapor-compression system (16).
6. the process recovery system of oil refining according to claim 1 and chemical engineering sewage, is characterized in that: water outlet and desalination pond (14) of reverse osmosis membrane or nanofiltration membrane (15) and mechanical vapor-compression system (16) link together.
7. the process recovery system of oil refining according to claim 1 and chemical engineering sewage, is characterized in that: anti-blocking air flotation pool (2) joins biological filter (3) location swap with multistage.
8. adopt equipment according to any one of claim 1-7 to carry out refining oil and the process recovery method of chemical engineering sewage, it is characterized in that comprising the following steps:
Chemical coagulation: through second-stage treatment oil refining, chemical engineering sewage or always enter in hybrid reaction groove (1), hybrid reaction abundant with added medicament, after generating alumen ustum, enter multistage biological filter (3) of joining and carry out biochemical treatment and filteration, enter afterwards in anti-blocking air flotation pool (2) and be separated, the water outlet of anti-blocking air flotation pool (2) adds ozone and is oxidized, and enters clean water basin (4) after degradation period;
Secondary filter: the water flowed out by clean water basin (4) promotes to enter in accurate filter (5) through pump and filters, water outlet enters in ejector (6), add the ozone that ozonizer (7) produces in ejector (6) after, enter into mixing tank (8) to react, after reaction, enter intermediate pool (9);
Biological degradation and absorption: the water outlet of intermediate pool (9) enters biologic active carbon filtration device (10) and carries out biological degradation again and absorption, then its water outlet enters in water purifying tank (11);
Desalting treatment: the water outlet of water purifying tank (11) enters into hollow fiber ultrafiltration or microfiltration membrane group device (12) carries out oil removing and continues to reduce suspended substance, then carries out desalination through boosting to reverse osmosis membrane group device (13);
Condensing crystal process: the dense water of reverse osmosis membrane apparatus (13) is again through reverse osmosis membrane or nanofiltration membrane (15) filtering and concentrating, produce water and enter desalination pond (14), dense water enters mechanical steam compression system (16), the condensed water that mechanical vapor-compression system (16) produces enters desalination pond (14), the crystallization otherwise processed of generation.
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| CN201410421486.6A CN104291516A (en) | 2014-08-25 | 2014-08-25 | Oil refining and chemical sewage processing and recovering equipment and method thereof |
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| CN108249673A (en) * | 2018-01-29 | 2018-07-06 | 中竞同创能源环境科技集团股份有限公司 | A kind of petro-chemical waste water treatment system |
| CN112830621A (en) * | 2019-11-25 | 2021-05-25 | 福建杰达环保科技有限公司 | Beneficiation wastewater recycling system and method based on membrane chemical reactor |
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