CN100375726C - Mambrane method of recovery and utilization of refining oil and chemical polluted water and its equipment - Google Patents
Mambrane method of recovery and utilization of refining oil and chemical polluted water and its equipment Download PDFInfo
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- CN100375726C CN100375726C CNB2005101169427A CN200510116942A CN100375726C CN 100375726 C CN100375726 C CN 100375726C CN B2005101169427 A CNB2005101169427 A CN B2005101169427A CN 200510116942 A CN200510116942 A CN 200510116942A CN 100375726 C CN100375726 C CN 100375726C
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 286
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a method and a device for recovering and utilizing refined oil and chemical sewage with a high organic pollutant content and a low oil and suspended matter content. The method comprises the procedures: biochemical treatment, filtration, precise filtration and biodegradation adsorption, wherein total water directly enters a multi-stage match biological filter 3 for carrying out biochemical treatment and filtration. The device comprises a multi-stage match biologic filter pool 3, a clear water pool 4, a precise filter 5, an ejector 6, an ozone generator 7, a mixer 8, a middle water pool 9, a biologic activated charcoal filter 10 and a water purifying pool 11. In addition, a device for carrying out recovery for refined oil with light pollution degree and chemical industry sewage is also arranged, and the device comprises a mixing reaction tank 1, an anti-block flotation tank 2, a clear water pool 4, a precise filter 5, an ejector 6, an ozone generator 7, a mixer 8, a middle water pool 9, a biologic activated charcoal filter 10, a water purifying pool 11, a hollow ultra filtration membrane, or a micro filtration membrane, reverse osmosis membranes (12, 13) and a desalting water pool.
Description
Technical field
The present invention relates to refine oil and method that chemical engineering sewage is recycled and implement the used equipment of this method, belong to the category of reuse after the advanced treatment of wastewater.
Background technology
There are nearly 50 national serious water shortages in the whole world at present, and China is confirmed as one of serious water shortage country by United Nations.But China has hundred million tons of hundreds ofs not utilize through the utilizable sewage of advanced treatment every year approximately to be discharged, and has caused the waste of water resources, and wherein oil refining, chemical industry are the water rich anies influential family, simultaneously, also are the rich anies influential family who pollutes large natural environment.Therefore, realize that sewage recycling has been the task of top priority.The objective of the invention is to sewage effluent is recycled after advanced treatment, make waste water reclaiming, reduce pollution simultaneously physical environment.
The formation of so-called " sewage " is to be formed through production process is contaminated by fresh water.We will utilize sewage just must remove pollutent in the sewage as much as possible, and pollutent mainly contains: oil, organism, suspended substance, organic salt etc.The present invention and former patent of invention, its patent No.: ZL 99112689.0, " embrane method oil refining sewerage recoverying and utilizing method and equipment " all is that these pollutents are aim in the sewage to remove, and these contaminant degradations are used the in addition reuse of receptible scope to industry.
Former patent of invention, its patent No. ZL 99112689.0 is successfully implemented in Harbin petrochemical industry branch office (former Harbin refinery), Fushun petrochemical industry branch office's second branch factory of oil and Jinzhou Petrochemical Company.Sewage is recycled, reduced blowdown, received favorable economic benefit and social benefit.
Former patent ZL 99112689.0 method flows are: (figure one)
Find some weak point of former patent of invention through production process.For example in the flow process, there be " settling tank " to also have " air flotation pool " two kinds of water treating ponds, these two kinds of ponds all belong to flocculation separation process after the dosing, the organic molecular weight ranges that can remove is consistent, that is to say all be hundreds of dalton, find to replace " settling tank " effect much better with " biological filter " through test between several kilodaltons; " hollow fiber ultrafiltration device " belongs to the membrane separation technique category in addition.Film is divided into film with desalination character and the film that does not have desalination character.If the pollutent of industrial sewage has inorganic saline pollution, need whole desalinations or partially desalted reuse more later on, and the hollow fiber ultrafiltration film belongs to not desalination membrane class, needs to increase desalination membrane and can adapt to reuse in former flow process.
Summary of the invention
So adopt " BAF " to replace " settling tank " of the prior art among the present invention, or/and adopt " hollow fiber ultrafiltration (little) filter membrane and reverse osmosis membrane apparatus " to substitute " hollow fiber ultrafiltration device " of the prior art ", literary composition specific as follows is described.
Method flow diagram of the present invention is seen figure two
The present invention is exactly " settling tank " used on the basis of original patent ZL 9912689.0 the former patent of " biological filter " replacement as can be seen from the contrast of figure one and figure three, the present invention adopts the biological filter, its normal operation is that water advances from the bottom, through packing layer to the upper reaches, flow out by the top water outlet, see figure four.Wherein filler is divided into two big classes: a class is the filler that proportion overweights water, is deposited on water-bed portion, sees figure five.Another kind of is the filler that proportion slightly is lighter than water, and filler floats on the surface, and sees figure four.In the present invention, the proportion that so-called biological filter is meant the filler that is adopted is variant, promptly adopts the filler of two or more proportions, says that from filtering angle pollutant holding capability can increase, and back flushing can increase pitch time, can save backwash volume like this.According to water quality, also can adopt the biological filter of single filler; Replaced original " hollow fiber ultrafiltration device " with " super (little) filter membrane of hollow and reverse osmosis membrane apparatus ".In addition, also can adopt the embrane method desalination according to requirement of engineering, also can not desalination.
The technical scheme explanation:
Overall purpose of the present invention is to provide can be removed pollutants in sewage and make it reach sewage recoverying and utilizing method and equipment that receptible pollution range (that is to say and reach required water-quality guideline) is used in industry.The pollutent main with regard to pollutent has: several big classes such as (1) suspended substance, (2) oil, (3) organism (4), ammonia nitrogen, (5) inorganic salts.The main application of reuse water has following several: one, the process water of not desalination, and as circulating cooling make-up water or incorporate the service water pipe network into.Two, after desalination, go to Water Treatment workshop or go and purifying waste water of not desalination blent the back and formed the low saline salinity circulating cooling make-up water.Three, water flowers, spill ground, flush the toilet, carwash etc., its water quality requirement is not high, water yield consumption is little again, does not do argumentation here.
We can learn according to above-mentioned purposes, no matter be to do circulating cooling make-up water or advance the service water pipe network, still enter the Water Treatment workshop of boiler, to pollutent in the sewage: suspended substance, oil, organism all are that requirement control is very tight, because of exceeding standard, they can cause the operation of production equipment undesired, especially organism.Taking in and formulating so the solution of the present invention flow process just is being based on these characteristics.Equipment of the present invention and method division are as follows.
One object of the present invention is to provide a kind of method that oil and suspension content are on the low side to organic pollutant content is higher oil refining and chemical engineering sewage reclaim and utilize that is used for, this method comprises the steps: biological chemistry processing and filtration, secondary filter and biological degradation absorption, wherein, described biological chemistry is handled and filtration step comprises following operation: total water inlet directly enters carries out biochemical treatment and filtration in the biological filter 3, entered in the clean water basin 4 by biological filter 3 effusive water.
According to a kind of optimal way of this method, biological chemistry is handled and filtration step also comprises following operation: add ozone (O according to the water quality situation
3), enter biological filter 3 behind the degradation period, carry out biological chemistry and handle and filteration.
According to the another kind of optimal way of this method, the secondary filter step comprises following operation: promoted to enter in the accurate filter 5 through pump by clean water basin 4 effusive water and filter, water outlet enters in the ejector 6; In ejector 6, add the O that ozonizer 7 is produced
3After, entering into mixing tank 8 and carry out hybrid reaction, reacted water outlet enters intermediate pool 9.
According to the another optimal way of this method, biological degradation and adsorption step comprise following operation: the water outlet of intermediate pool 9 enters biologic active carbon filtration device 10 and carries out biological degradation once more and absorption, and its water outlet enters in the water purifying tank 11 then.
Optimal way again according to this method, also comprise the desalting treatment step, this step comprises following operation: the water outlet of water purifying tank 11 enters into hollow fiber ultrafiltration (UF) or micro-filtration (MF) film group 12 carries out oil removing and continue reducing suspended substance, carries out desalination through boosting to RO reverse osmosis membrane group 13 then.
Another optimal way according to this method, when water quality is relatively poor, this method also comprises the chemical coagulation step, this chemical coagulation step comprises following operation: oil refining, chemical engineering sewage (total water inlet) through second-stage treatment are introduced in the hybrid reaction groove 1 before entering in the biological filter 3, behind added medicament thorough mixing reaction generation alumen ustum, enter in the air flotation pool 2 and separate, the water after the separation enters in the biological filter 3, and water outlet enters in the clean water basin 4.
Another optimal way according to this method, when water quality is relatively poor, this method also comprises: biological chemistry is handled and filtration step, this step comprises following operation: before always intaking in entering hybrid reaction groove 1, at first enter into and carry out biological chemistry processing and filtration in the biological filter 3, the water outlet after the processing enters hybrid reaction groove 1.
Another object of the present invention is to provide a kind of equipment that oil and suspension content are on the low side to organic pollutant content is higher oil refining and chemical engineering sewage reclaim and utilize that is used for, this equipment comprises the following device that mechanically links together: be used to carry out that biological chemistry is handled and biological filter 3, clean water basin 4, accurate filter 5, ejector 6, ozonizer 7, mixing tank 8, intermediate pool 9, biologic active carbon filtration device 10 and the water purifying tank 11 of filteration.
According to a kind of optimal way of this equipment, biological filter 3 comprises inlet mouth, water-in (back flushing inlet mouth, back flushing water-in) and at least two packing layers.
According to another optimal way of this equipment, the filler at least two packing layers has different proportion.
Another optimal way according to this equipment also comprises: hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane (12,13).
According to an optimal way again of this equipment, hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane (12,13) link together with series system.
When water quality was relatively poor, another optimal way according to this equipment also can comprise: hybrid reaction groove 1 and anti-blocking air flotation pool 2.
Another optimal way according to this equipment, hybrid reaction groove 1 water inlet is connected with the water inlet manifold road, its water outlet is connected with the water inlet of anti-blocking air flotation pool 2, the water outlet of anti-blocking air flotation pool 2 is connected with the water inlet of biological filter 3, and the water outlet of biological filter 3 is connected with described clean water basin 4.
Optimal way again according to this equipment, the water inlet of biological filter 3 is connected with water inlet manifold, its water outlet is connected with the water inlet of described hybrid reaction groove 1, the water outlet of described hybrid reaction groove 1 is connected with the water inlet of anti-blocking air flotation pool 2, and the water outlet of anti-blocking air flotation pool 2 is connected with the water inlet of clean water basin 4.
Another purpose of the present invention is to provide a kind of method that the lighter oil refining of pollution level and chemical engineering sewage are reclaimed of being used for, this method comprises the steps: chemical coagulation, secondary filter and biological degradation absorption, wherein, described chemical coagulation step comprises following operation: oil refining, chemical engineering sewage (total water inlet) through second-stage treatment enter in the hybrid reaction groove 1, behind added medicament thorough mixing reaction generation alumen ustum, enter in the air flotation pool 2 and separate, the water after the separation enters clean water basin 4.
According to an optimal way of this method, the secondary filter step comprises following operation: promoted to enter in the accurate filter 5 through pump by clean water basin 4 effusive water and filter, water outlet enters in the ejector 6; In ejector 6, add the ozone (O that ozonizer 7 is produced
3) after, enter into mixing tank 8 and carry out hybrid reaction, enter intermediate pool 9 after the reaction.
According to another optimal way of this method, biological degradation and adsorption step comprise following operation: the water outlet of intermediate pool 9 enters biologic active carbon filtration device 10 and carries out biological degradation once more and absorption, and its water outlet enters in the water purifying tank 11 then.
Another optimal way according to this method, also can comprise: the desalting treatment step, this desalting treatment step comprises following operation: the water outlet of water purifying tank 11 enters into hollow fiber ultrafiltration (UF) or micro-filtration (MF) film group 12 carries out oil removing and continue reducing suspended substance, carries out desalination through boosting to RO reverse osmosis membrane group 13 then.
A further object of the present invention is to provide a kind of equipment that the lighter oil refining of pollution level and chemical engineering sewage are reclaimed of being used for, this equipment comprises the following device that mechanically is linked in sequence together: hybrid reaction groove 1, 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 and hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane (12,13) and desalination pond.
According to a preferred embodiment of this equipment, this hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane (12,13) link together with series system.
Another preferred embodiment according to this equipment, the water outlet of water purifying tank 11 is divided into two pipelines, the water-in of one of them pipeline and described hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane (12,13) assembly links together with series system, and another pipeline is connected with industrial pipe network.
According to the another preferred embodiment of this equipment, the water outlet and the desalination pond 14 of described hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane (12,13) link together.
Below to the explanation that makes an explanation respectively of each parts of the present invention's equipment.
1, anti-blocking air flotation pool
This air flotation pool adopts partial reflux high pressure air-dissolving air-float, and its dissolved-air pressure is higher, and the outgas head adopts anti-blocking structure.Cooperation can have removal effect significantly to oil, suspended substance and larger molecular organics with the dosing flocculation.Adopt medicament to select for use, can adopt polyacrylamide (PAM) or other flocculation agent after polymerize aluminum chloride (PAC) and the hydrolysis according to water quality.
2, biological filter (or common single filling biofilter)
The biological filter replaces the reason of " settling tank " among former patent of invention: the ZL 99112689.0: the one, and " settling tank " all is to utilize the principle of dosing flocculation to come separating contaminants with " air flotation pool ", its action principle is basic identical, repeats in same flow process.The 2nd, the effect of biological filter has the effect of biological degradation organism, and possessing biochemical and filtering two kinds of functions is one.
The present invention adopts the biological filter, and its normal operation is that water advances from the bottom,, is flowed out by the top water outlet to the upper reaches through packing layer, sees figure four.Wherein filler is divided into two big classes: a class is the filler that proportion overweights water, is deposited on water-bed portion, sees figure five.Another kind of is the filler that proportion slightly is lighter than water, and filler floats on the surface, and sees figure four.So-called biological filter is meant that the proportion of filler is variant, promptly adopts the filler of two or more proportions, and from filtering angle, pollutant holding capability can increase, and back flushing can increase pitch time, can save backwash volume like this.According to water quality, also can adopt the biological filter of single filler, behind this biological filter operation certain hour, resistance increases, and must carry out back flushing.Back flushing adopts water and air to mix flushing.See figure four and figure five
3, high-efficiency and precision filter
So-called high-efficiency and precision filter is meant the efficient height of the particulate filter of conventional single filter material of this strainer, and the precision of water outlet is also than the precision height of conventional granulates strainer.The filtrate of its usefulness has fiber yarn or fiber-ball filter media, also by the filtrate of forming by several different specific weights and varigrained filtrate, and its water outlet can reach greater efficiency and accurate degree of filtration, its filler acid-alkali-corrosive-resisting.
Sewage is via anti-blocking air flotation pool, biological filter, and oil, suspended substance, non-solubility organism are removed basically after the tertiary treatment of high-efficiency and precision filter again, and the organism of readily biodegradable also is degraded substantially in the biological filter.The organism that remains is deliquescent hardly degraded organic substance substantially, must carry out strong oxidation to these organism with strong oxidizer O3, its molecular structure is changed, the ring-type oxidation operation is become the chain organism, the long-chain oxidation operation is become the short chain organism, larger molecular organics is oxidized to small organic molecule, it can be fallen by biological degradation in the biological activated carbon of postorder, the rest parts organism can adapt to the adsorption range of gac and be adsorbed.
Introduce several parts in back in the flow process below:
4, O
3Producer
O
3Be a kind of strong oxidizer, it can be the oxidation operation in the water CO
2And water.When dosage is not enough, can become intermediate to organism oxygen, this is the principle that we adopt, promptly larger molecular organics is become small organic molecule and short chain organism with the ring-type oxidation operation, this organism is easy to be fallen with postorder charcoal absorption by biochemical degradation and falls.O
3Remove above-mentioned main effect, go effects such as flavor, decolouring, sterilization in addition.
5, biological activity char filter
Two effects that have been in operation of biological activity char filter, the one, biological oxidation; The 2nd, the charcoal absorption effect.Through O
3Organic constitution in the sewage after the oxidation has changed, and changes over readily biodegradable, obtains oxidative degradation at the charcoal layer, because of in this part water owing to crossed O
3Transformation period, so be dissolved with enough oxygen in the water for biological degradation usefulness, the residual organic substances of organism after biological degradation adsorbed to fall by gac in the water, make water outlet CODMn value degradable extremely＜3-5mg/L.This water, if saltiness is not very high, just can be for water of productive use, can directly do circulating cooling make-up water usefulness, also can mend into the production network of rivers.
To this step, reusing sewage is just passable if no desalination requires, and need not membrane treatment appts.When reusing sewage in boiler or when being used for de-salted water, require reuse water is carried out desalination, smart desalination or aftertreatment are carried out in the Water Treatment workshop that water enters the boiler house after the desalination.Because of desalting method of the present invention is the RO reverse osmosis membrane, can remove the salt amount of 95%-97%, there is no a large amount of soda acids and pollute, be advanced at present a kind of desalination means, and its reuse de-salted water is reasonable economically.
6, super (little) filter membrane of hollow and reverse osmosis membrane apparatus
At present, Chang Yong film has microfiltration membrane (english abbreviation is MF); Ultra-filtration membrane (UF); Nanofiltration membrane (NF) and reverse osmosis membrane (RO).Preceding two kinds of films (MF) and (UF) can not deionization just can not desalination.The two kinds of films in back can desalination, so reuse water is selected the RO reverse osmosis for use when requiring deionization.But, choose sky ultrafiltration or mocromembrane and RO film cascade to use in order to protect the RO film steady in a long-termly to move.Oil pollution in oil, chemical engineering sewage is very important, oil in the sewage often exists with oil slick, dispersed oil and three kinds of states of oil in water emulsion, can dispose with methods such as flocculation-air floating, filtration, charcoal absorptions for preceding two kinds, and oil in water emulsion is difficult to handle, and hollow fiber ultrafiltration and micro-filtration (especially ultrafiltration) can be tackled oil in water emulsion.Remove in addition, it can also tackle bacterium and larger molecular organics (more than 100,000 dalton).So, in this patent, adopt hollow fiber ultrafiltration film (or microfiltration membrane) use of connecting with reverse osmosis membrane when the desalination requirement is arranged.
As can be seen, the equipment that is adopted in the technical process all is to set at the removal of pollutent, and attaches most importance to organic pollutant by above " technical scheme explanation ".As can be seen from Table I, different treating processes can only be removed the organism of different molecular weight section.
Technological process and instruction card one
Technique effect of the present invention
China belongs to one of serious water shortage state, the per capita water resources quantity of China only be the world account for water resources quantity per capita 1/4.Add that China's land resources is vast, distribution of water resources is uneven again, causes some area to restrict sustainable development owing to water resources is nervous.The ton Chemicals water loss external at petrochemical system is starkly lower than China, as processes 1 ton of crude oil water loss abroad at 0.5 ton below the fresh water, and China is on average about 1.5.If not reuse of sewage, ton crude oil processing water loss is reduced to cannot below 1.0.That is to say that reusing sewage is a water-saving and emission-reducing, reduce the road that to go of ton crude oil water loss.Its economic benefit also is fairly obvious, and general city fresh water is all more than 2.00 yuan, and some place is higher.And reusing sewage cost (comprising 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, with 12000 tons/day is example, fresh water deducts 0.70 yuan/ton of cost by 2.00 yuan/ton, be 1.40 yuan/ton of profits per ton, 1 year can save water rate is 613.2 ten thousand yuan/year.
What more than calculate is economic benefit without the embrane method desalination, if the economic benefit after desalination is more obvious.General de-salted water is 70% of a sewage total amount, the desalination water yield so is 12000 * 0.70 tons/day, such reuse water cost is greatly between 2.00-2.50 unit/ton, and the desalination water price is between 8.50-13.00 unit/ton, with ten thousand yuan/year of its bottom price calculation of price: 12000 * 0.70 * (8.50-2.00) * 365=1992.9.So, will save nearly 20,000,000 yuan in 1 year.The annual simultaneously sewage discharge that also reduces 4,380,000 tons is gone in rivers,lakes and seas.So economic benefit of the invention process and social benefit are considerable.
Description of drawings
Figure one is the method flow diagram of prior art;
Figure two is an equipment structure chart used in the prior art;
Figure three is the schema of first embodiment of the method according to this invention;
Figure four is a heavy filling biofilter principle assumption diagram;
Figure five is light filler biological filter principle assumption diagram;
Figure six is for being used to implement the device structure sketch that method adopted of first embodiment of the invention;
Figure seven is the schema of second embodiment of process according to the invention;
Figure eight is for being used to implement the device structure sketch that method adopted of second embodiment of the invention;
Figure nine is the schema of the 3rd embodiment of process according to the invention;
The device structure sketch that figure ten adopts for the present invention of method institute who is used to implement third embodiment of the invention;
Figure 11 is the schema of the 4th embodiment of process according to the invention;
The device structure sketch that figure 12 adopts for the present invention of method institute who is used to implement the 4th embodiment according to the present invention.
Preferred embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
First embodiment:
Shown in figure three, figure six, there is shown embrane method refinery sewage recoverying and utilizing method according to first embodiment of the invention, the method for this embodiment comprises the steps:
A, enter hybrid reaction groove 1 through oil refining, the chemical engineering sewage of second-stage treatment, generate alumen ustum with polyacrylamide (PAM) thorough mixing reaction after added medicament polymerize aluminum chloride (PAC) and the hydrolysis after, enter air flotation pool 2 and separate.
B, air flotation pool 2 water outlets can directly enter biological filter 3 according to the water quality situation, also can add part of O
3, enter biological filter 3 behind the degradation period, carry out biochemical treatment and filteration.Clean water basin 4 are advanced in biological filter 3, water outlet.
C, clean water basin 4 water promote into high-efficiency and precision filter 5 through pump, and after high-efficiency and precision filter 5 filtered, ejector 6 was advanced in water outlet, add the O that ozonizer 7 produces at ejector 6
3 Laggard mixing tank 8 hybrid reactions are reacted laggard intermediate pool 9.
D, intermediate pool 9 water enter biological activity char filter 10 through pump, and in its biological degradation and absorption once more, 10 water outlets of biological activity char filter enter water purifying tank 11.If saltiness in the sewage is not high, and when there is no the desalination requirement, water just can send industrial pipe network or directly advance the circulating cooling make-up water reuse in the water purifying tank 11.If need desalination or partially desalted, so also need through desalting treatment.
E, if need, also can carry out desalting treatment: water promotes into hollow fiber ultrafiltration (UF) or micro-filtration (MF) film group 12 in the water purifying tank 11, carry out oil removing and continue to reduce suspended substance, so carry out desalination through boosting to RO reverse osmosis membrane group 13, the concentrated water drainage that produces falls, the product water of reverse osmosis membrane 13 enters desalination pond 14, sends to water spot such as boiler Water Treatment workshop then.Or partially desalted water removes water purifying tank 11, and the water purification that blends into low saline salinity with former water purification send circulating cooling make-up water.
Shown in figure six, there is shown the embrane method refinery sewage recycling equipment that is used to implement according to the method for first embodiment of the invention, always advance hybrid reaction groove 1, advance air flotation pool 2 then, biological filter 3, clean water basin 4 advance high-efficiency and precision filter 5 again through lift pump, water outlet is through ozone ejector 6, the O of ozonizer generation
3Suck the laggard intermediate pool 9 of reaction in mixing tank 8.Advance water purifying tank 11 through biological activity char filter 10 then, if reuse water does not need desalination just can advance industrial pipe network and utilized.If need desalination to advance hollow fiber ultrafiltration film (or hollow microfiltration membrane) 12 again, advance RO reverse osmosis membrane 13 again.
Second embodiment:
Water pollution to sewage is lighter, and just according to the present invention, when the water quality of total water inlet was better, technical process can simplify shown in figure seven, figure eight.This second embodiment has removed 3 backs, biological filter to form on the basis of embodiment one.
Shown in figure seven, figure eight, this second embodiment provides a kind of recoverying and utilizing method of refinery sewage, the steps include:
A, the oil refining after second-stage treatment, chemical engineering sewage enter hybrid reaction groove 1, and enter air flotation pool 2 behind polyacrylamide (PAM) thorough mixing after institute's adding medicine polymerize aluminum chloride (PAC) and the hydrolysis and separate, and separate back water and advance clean water basin 4.
B, clean water basin 4 water promote into high-efficiency and precision filter 5 through pump, enter ejector 6 through high-efficiency and precision filter 5 filtering water, add the O that is produced by ozonizer 7 at ejector 6
3, hybrid reaction in mixing tank 8, organism in the oxidizing water reacts laggard intermediate pool 9.
Water enters biological activity char filter 10 through pump in c, the intermediate pool 9, and water enters water purifying tank 11 after biological degradation and charcoal absorption.This water can be back to industrial pipe network or circulating cooling make-up water.
D, if need desalting treatment, advance hollow fiber ultrafiltration UF (or micro-filtration MF) film group 12 again, except that advancing RO reverse osmosis membrane apparatus 13, pressure-raising behind the suspended substance takes off inorganic salt through oil removing, the laggard desalination of desalination pond 14 is back to boiler chemical water workshop or part goes water purifying tank 11 that the water purifying tank water purification is blent into the low saline salinity water purification.
Shown in figure eight, there is shown the embrane method refinery sewage recycling equipment of the method that is used to implement second embodiment of the invention, total water inlet is advanced air flotation pool 2 through hybrid reaction groove 1, advances clean water basin 4 then.Clean water basin 4 advance high-efficiency and precision filter 5 through water lift and advance ejector 6, drop into O again
3The O that producer 7 produces
3Jointly through the laggard intermediate pool 9 of mixing tank 8 reactions.Water lift advances the laggard industrial pipe network of biological activity char filter 10 product water again, if need desalination, water lift advances hollow fiber ultrafiltration (little) filter membrane group 12 and RO reverse osmosis membrane group 13 back product water enter desalination pond 14.
The 3rd embodiment:
Higher when the organic pollutant of sewage, and oil and suspended substance be when relatively low, can remove " anti-blocking air flotation pool 2 parts " and directly advance in the biological filter 3 on the basis of first embodiment.
Shown in figure nine, figure ten, there is shown embrane method refinery sewage recoverying and utilizing method according to the method for third embodiment of the invention, this method comprises the steps:
A, always advance biological filter 3 biodegrade organism and filteration, clean water basin 4 are advanced in water outlet;
B, clean water basin 4 water carry out fine filtering through promoting high-efficiency and precision filter 5, and filter back water enters ejector 6, adds the O that is produced by ozonizer 7 in ejector 6
3, hybrid reaction in mixing tank 8, organism in the oxidizing water reacts laggard intermediate pool 9;
Water enters biological activity char filter 10 through pump in c, the intermediate pool 9, and biological activated carbon continues biological degradation organism and charcoal absorption organism therein, produces water and enters water purifying tank 11.This water can be back to industrial pipe network or circulating cooling make-up water;
D, if need desalting treatment, enter super (little) filter membrane group 12 of hollow again, through oil removing with after further removing the laggard reverse osmosis membrane group 13 of suspended substance, remove the laggard film brine tank 14 of inorganic salt through the reverse osmosis membrane group, de-salted water can send boiler chemical water workshop or part to remove water purifying tank 11, and the water purifying tank water purification is blent into the low saline salinity water purification.
Shown in figure ten, there is shown the embrane method refinery sewage recycling equipment that is used to implement according to the method for third embodiment of the invention.It always advances many assembly biological filter 3, clean water basin 4, high-efficiency and precision filter 5, ejector 6, O
3Producer 7, the O of generation
3 Enter mixing tank 8 through ejector 6 and advance intermediate pool 9.Intermediate pool 9 water advance water purifying tank 11 then through promoting biological activity char filter 10, and it produces water and can advance industrial pipe network or do circulating cooling make-up water.If need desalination, answer water lift to advance super (little) filter membrane group 12 of hollow and reverse osmosis membrane group 13, produce water and enter desalination pond 14.
The 4th embodiment:
According to processing requirement, can on the basis of first embodiment, change " anti-blocking air supporting " and the position of " biological filter ", to adapt to the needs of water quality.
Shown in figure 11, there is shown embrane method refinery sewage recoverying and utilizing method according to fourth embodiment of the invention, this embodiment comprises the steps:
A, enter biological filter 3, organism and filter suspended substance etc. in the biological treatment of water through oil refining, the chemical engineering sewage of second-stage treatment.
Hybrid reaction groove 1 is advanced in b, biological filter 3 water outlets, makes the medicament polymerize aluminum chloride (PAC), the polyacrylamide (PAM) that add generate alumen ustum with the sewage reaction, enters in the air flotation pool 3 and separates.Water outlet enters clean water basin 4.
C, clean water basin 4 water promote into high-efficiency and precision filter 5 through pump, carry out water filtration, reduce the laggard ejector 6 of suspended substance, add the O that is produced by ozonizer 7 in ejector 6
3, hybrid reaction in mixing tank 8 is reacted laggard intermediate pool 9.
D, intermediate pool 9 water promote into biological activity char filter 10, biological degradation and adsorb organic compound once more through pump.10 water outlets of biological activity char filter enter water purifying tank 11.Sewage is if saltiness is not high, and when no desalination required, the reuse water in the water purifying tank 11 just can send industrial pipe network or circulating cooling make-up water.If need desalination or partially desalted also need through desalting treatment.
E, desalting treatment: the water in the water purifying tank 11 carries out desalination through promoting super (little) filter membrane group 12 removal oil of hollow and suspended substance after boost to RO reverse osmosis membrane group 13, the de-salted water that produces enters desalination pond 14, send boiler chemical water workshop then, or part goes water purifying tank 11 to blend into the low saline salinity water purification.
Shown in figure 12, there is shown the embrane method refinery sewage recycling equipment that is used to implement according to the method for fourth embodiment of the invention, its water inlet manifold enters biological filter 3, advances air flotation pool 2 through mixed reaction pond 1 again, advances clean water basin 4 then.Clean water basin 4 are after promote the O of high-efficiency and precision filter 5, ejector 6, ozonizer 7 products
3In mixing tank 8, mix laggard intermediate pool 9 with water, be promoted to biological activity char filter 10, clean water basin 11 through pump again.The sewage saltiness is not high, just can send industrial pipe network reuse.If the need desalination need be advanced super (little) filter membrane group 12 of hollow and reverse osmosis membrane 13 product de-salted waters enter desalination pond 14.
Lectotype selection:
The capacity of equipment of the inventive method flow process is not waited to 24000t/ days every day (1000t/h) by 720t/ days (30t/h) scales.Fairly largely can adopt some production lines to compose in parallel.
Claims (15)
1. one kind is used for the method for refining oil and chemical engineering sewage reclaims, this method comprises the steps: biological chemistry processing and filtration, secondary filter and biological degradation absorption, wherein, described biological chemistry is handled and filtration step comprises following operation: total water inlet directly enters in the biological filter (3) carries out biochemical treatment and filtration, entered in the clean water basin (4) by the effusive water in described biological filter (3), wherein said biological filter (3) include proportion greater than the filler of water and the proportion filler less than water; Described secondary filter step comprises following operation: promoted to enter in the accurate filter (5) through pump by the effusive water of clean water basin (4) and filter, water outlet enters in the ejector (6); Behind the ozone that adding ozonizer (7) is produced in ejector (6), enter into mixing tank (8) and carry out hybrid reaction, reacted water outlet enters intermediate pool (9); Described biological degradation and adsorption step comprise following operation: the water outlet of intermediate pool (9) enters biologic active carbon filtration device (10) and carries out biological degradation once more and absorption, and its water outlet enters in the water purifying tank (11) then.
2. method according to claim 1 is characterized in that: described biological chemistry is handled and filtration step also comprises following operation: add ozone according to the water quality situation, enter described biological filter (3) behind the degradation period, carry out biological chemistry and handle and filteration.
3. method according to claim 1 and 2, it is characterized in that: also comprise the desalting treatment step, this step comprises following operation: the water outlet of water purifying tank (11) enters into hollow fiber ultrafiltration or microfiltration membrane group and reverse osmosis membrane apparatus (12,13) carry out oil removing and continuation reduction suspended substance, carry out desalination through boosting to reverse osmosis membrane group (13) then.
4. method according to claim 1 and 2, it is characterized in that: also comprise the chemical coagulation step, described chemical coagulation step comprises following operation: oil refining, chemical engineering sewage or total entering in the described biological filter (3) through second-stage treatment are introduced in the hybrid reaction groove (1) before, behind added medicament thorough mixing reaction generation alumen ustum, enter in the air flotation pool (2) and separate, water after the separation enters in the described biological filter (3), and water outlet enters in the clean water basin (4).
5. one kind is used for the equipment of refining oil and chemical engineering sewage reclaims, this equipment comprises the following device that mechanically links together: 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), it is characterized in that: this equipment also comprises and is used to carry out that biological chemistry is handled and the biological filter (3) of filteration, and described biological filter (3) include proportion greater than the filler of water and the proportion filler less than water.
6. equipment according to claim 5 is characterized in that: described biological filter (3) comprise inlet mouth, water-in and at least two packing layers.
7. equipment according to claim 6 is characterized in that: described biological filter also comprises back flushing inlet mouth and back flushing water-in.
8. according to claim 5 or 6 described equipment, it is characterized in that: also comprise: hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane apparatus (12,13), the water-in of this device is connected with series system with a rising pipe of water purifying tank (11).
9. equipment according to claim 8 is characterized in that: the hollow fiber ultrafiltration film of described hollow fiber ultrafiltration film or microfiltration membrane and reverse osmosis membrane apparatus (12,13) or microfiltration membrane (12) link together with series system with reverse osmosis membrane (13).
10. equipment according to claim 8 is characterized in that also comprising: hybrid reaction groove (1) and anti-blocking air flotation pool (2).
11. equipment according to claim 9 is characterized in that also comprising: hybrid reaction groove (1) and anti-blocking air flotation pool (2).
12. equipment according to claim 10, it is characterized in that: described hybrid reaction groove (1) water inlet is connected with the water inlet manifold road, its water outlet is connected with the water inlet of anti-blocking air flotation pool (2), the water outlet of anti-blocking air flotation pool (2) is connected with the water inlet of described biological filter (3), and the water outlet of described biological filter (3) is connected with described clean water basin (4).
13. equipment according to claim 10, it is characterized in that: the water inlet of described biological filter (3) is connected with water inlet manifold, its water outlet is connected with the water inlet of described hybrid reaction groove (1), the water outlet of described hybrid reaction groove (1) is connected with the water inlet of anti-blocking air flotation pool (2), and the water outlet of anti-blocking air flotation pool (2) is connected with the water inlet of clean water basin (4).
14. equipment according to claim 11, it is characterized in that: described hybrid reaction groove (1) water inlet is connected with the water inlet manifold road, its water outlet is connected with the water inlet of anti-blocking air flotation pool (2), the water outlet of anti-blocking air flotation pool (2) is connected with the water inlet of described biological filter (3), and the water outlet of described biological filter (3) is connected with described clean water basin (4).
15. equipment according to claim 11, it is characterized in that: the water inlet of described biological filter (3) is connected with water inlet manifold, its water outlet is connected with the water inlet of described hybrid reaction groove (1), the water outlet of described hybrid reaction groove (1) is connected with the water inlet of anti-blocking air flotation pool (2), and the water outlet of anti-blocking air flotation pool (2) is connected with the water inlet of clean water basin (4).
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| CN2007101656056A Division CN101229936B (en) | 2005-10-27 | 2005-10-27 | Method and equipment for reclaiming refining and chemical wastewater |
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| CN100375726C true CN100375726C (en) | 2008-03-19 |
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| CN101734829B (en) * | 2009-12-29 | 2012-07-25 | 上海亚同环保实业股份有限公司 | Biological nitrogen and phosphorus removal process of sewage and matched device of V-shaped biological aerated filter pool |
| CN102910753A (en) * | 2012-09-11 | 2013-02-06 | 中国石油化工股份有限公司 | Continuous aeration type ultra-filter car washing wastewater circulating recovering system device and method thereof |
| CN103663855B (en) * | 2012-12-20 | 2015-04-22 | 深圳市宇力科技有限公司 | Treatment method, reagent and special facility before recharge of wastewater from alkali-surfactant-polymer combination flooding oil recovery in oil field |
| CN106746077A (en) * | 2016-12-14 | 2017-05-31 | 苏州舜沃环保科技有限公司 | Advanced treatment of industrial waste water automation equipment system |
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| CN1301671A (en) * | 1999-12-30 | 2001-07-04 | 同济大学 | Purifying technology for micro polluted water source |
| JP2003033764A (en) * | 2001-07-26 | 2003-02-04 | Ebara Corp | Method and apparatus for washing filtration body by using ozone |
| CN2598995Y (en) * | 2003-02-28 | 2004-01-14 | 沈祖志 | Automatic control fast biological film reaction sewage treatment equipment |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301671A (en) * | 1999-12-30 | 2001-07-04 | 同济大学 | Purifying technology for micro polluted water source |
| JP2003033764A (en) * | 2001-07-26 | 2003-02-04 | Ebara Corp | Method and apparatus for washing filtration body by using ozone |
| CN2598995Y (en) * | 2003-02-28 | 2004-01-14 | 沈祖志 | Automatic control fast biological film reaction sewage treatment equipment |
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