CN204607805U - Oil refining sewerage integrated combination treatment system - Google Patents
Oil refining sewerage integrated combination treatment system Download PDFInfo
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- CN204607805U CN204607805U CN201520182196.0U CN201520182196U CN204607805U CN 204607805 U CN204607805 U CN 204607805U CN 201520182196 U CN201520182196 U CN 201520182196U CN 204607805 U CN204607805 U CN 204607805U
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- 238000007670 refining Methods 0.000 title claims abstract description 31
- 238000011284 combination treatment Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000011282 treatment Methods 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 claims description 55
- 230000003647 oxidation Effects 0.000 claims description 54
- 238000009287 sand filtration Methods 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 27
- 238000006386 neutralization reaction Methods 0.000 claims description 24
- 238000012856 packing Methods 0.000 claims description 21
- 239000013049 sediment Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 239000010802 sludge Substances 0.000 claims description 19
- 230000000630 rising effect Effects 0.000 claims description 17
- 239000006004 Quartz sand Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 241000894006 Bacteria Species 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002028 Biomass Substances 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 230000000813 microbial effect Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 5
- 244000000010 microbial pathogen Species 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000026676 system process Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 25
- 239000003921 oil Substances 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- -1 hydroxyl radical free radical Chemical class 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 239000012028 Fenton's reagent Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 239000006228 supernatant Substances 0.000 description 1
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Abstract
Oil refining sewerage integrated combination treatment system, belongs to technical field of sewage.System comprises biochemical treatment unit and Fenton fluidized bed processing unit; Described biochemical treatment unit is connected with described Fenton fluidized bed processing unit by discharge pipe line; Biochemical treatment unit through multi-stage biological treatment system by the most COD in oil refining sewerage and most ammonia nitrogen removal, the draining of biochemical unit contains more refractory organic, then can more than 60% be removed in Fenton fluidized bed processing unit, and not containing pathogenic microorganism in water outlet after Fenton Strong oxdiative.Through integrated combination system process petroleum waste water, the total removal rate of COD, ammonia nitrogen all can reach more than 95%, and water outlet meets the A standard of " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) primary standard.
Description
Technical field
The utility model belongs to sewage treatment area, is specifically related to a kind of oil refining sewerage combined treatment process integrating device.
Technical background
Oil-refining chemical factory is in processing process, the trade effluent obtained has: crude oil desalting water, product washing water, stripping vapor water of condensation, oilcan dehydration, pump water coolant, cooling tower and boiler blowdown water etc., be characterized in: wastewater flow rate is large, water-quality constituents is complicated, variation water quality is large, organic content is high, containing various heavy.Technique that current most domestic Petrochemical Enterprises is all used " oil removal-air supporting-biochemistry ", its mesophytization section is subject to pre-treating technology effluent quality impact when disposing of sewage is larger, when being subject to high loading and impacting, effluent index does not often reach emission request, and is difficult to the reuse realizing sewage.In oil refining sewerage at present after secondary biochemical treatment cell processing, still containing a large amount of hardly degraded organic substances, if continued by the technique of biochemical unit as advanced treatment, then water outlet is difficult to reach design requirements, thus causes financial loss and waste.Therefore, adopt further other method or corresponding combined method to carry out Refinery Wastewater be imperative.
Current ozone high grade oxidation technology processes with being applied to refinery water.Chinese patent CN203625104 U adopts By Ozone to carry out advanced treatment to the oil refining sewerage after biochemical treatment, the shortcoming of this patent adopts high-pressure pump, high-pressure ozone catalyzed oxidation tower, liquid oxygen storage tank, cause equipment cost too high, adopt two-stage ozone treating system to make processing unit long, cause the difficulty on operational administrative.Chinese patent CN 200920286427 adopts ozone, biological activated carbon, ultra-filtration equipment, precise filtering device, reverse osmosis unit, pure water pond regulating YIN and YANG ion exchange bed carries out advanced treatment to oil refining sewerage, the shortcoming of this patent be processing unit oversize, adopt the technique early investment based on physical treatment method huge, owing to employing the membrane module such as ultra-filtration membrane, reverse osmosis membrane, long-play can cause the blocking of film, cleaning difficulty, causes the increase of processing cost further.
Fenton has the advantage of its uniqueness when processing difficult for biological degradation or general chemical oxidation is difficult to the organic waste water proved effective as a kind of high-level oxidation technology, as simple to operate, reagent is easy to get, without complex apparatus, economy and environmentally friendly etc., Fenton reagent process waste water mainly plays a role from two aspects: the advanced oxidation of hydroxyl radical free radical (OH) and the coagulating sedimentation of molysite.Fenton reagent has very strong oxidation capacity, is because H
2o
2generated hydroxyl radical free radical (OH) by ferrous ion catalytic decomposition in acid condition, and cause other free radicals more.Hydroxyl radical free radical (OH) oxidizing power is extremely strong, selectivity is not had to organism, the scope of application is extremely extensive, can react with organism and generate organic free radical, organic free radical is oxidized further, and organic constitution generation carbochain is ruptured, and makes macromole hard-degraded substance scission of link open chain, macromole becomes small molecules, is finally oxidized to H
2o and CO
2, the direct mineralising of indivedual organism.Carry out testing and engineering practice according to Fenton reagent principle, take Fenton fluidization, the technology such as the reduction of dissolved of this combine with technique homophase chemical oxidation, out-phase chemical oxidation, fluidized bed crystallization and ferriferous oxide, traditional Fenton oxidation method has been done significantly to improve, the dosage of Fenton can be reduced and reduce chemical sludge yield, the ferriferous oxide simultaneously formed at carrier surface has the effect of heterocatalysis, and the mode of fluidized-bed also facilitates chemical oxidation reaction and mass-transfer efficiency, COD removal efficiency is promoted.
In view of existing oil refining sewerage further treatment technique there is no good treatment effect, and because equipment cost is high, the development of factor directly the governs efficient treatment technology such as complicated operation, working cost be high.But new " Law on Environmental Protection " implemented is had higher requirement for sewage disposal unit, need a kind of efficient, economic, simple method badly and oil refining sewerage is processed, to reaching national emission request.
The purpose of this utility model is to provide oil refining sewerage integrated combination treatment system and treatment process.
Utility model content
The utility model solves above-mentioned problems of the prior art, providing a kind of oil refining sewerage integrated combination treatment system, for improving the treatment effect of sewage, decreasing treatment scheme simultaneously, and technique is simple, saving civil engineering area, reduction capital construction cost.
The utility model technology is achieved through the following technical solutions:
Oil refining sewerage integrated combination treatment system, described system comprises biochemical treatment unit and Fenton fluidized bed processing unit; Described biochemical treatment unit is connected with described Fenton fluidized bed processing unit by discharge pipe line;
Described biochemical treatment unit comprises sandfiltration pot (a1), the first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), medium sediment pool (a5), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8), sandfiltration pot (a9) and water collecting basin (a10); Described sandfiltration pot (a1) is communicated with by rising pipe (1b) fluid with first anaerobism section (a2) one end, first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), medium sediment pool (a5), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8), by fluid serial communication, form multi-stage biological treatment system; Described 4th aerobic section (a8) is communicated with by rising pipe (1c) fluid with sandfiltration pot (a9) one end; Described sandfiltration pot (a9) is also communicated with by rising pipe (1d) fluid with water collecting basin (a10);
Described sandfiltration pot (a1) comprises oil refining sewerage water inlet pipe (1a), sand filtration filler (2) and rising pipe (1b), and described first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8) are separated into two little unit chambeies (preferably two unit cavity volume are equal) by weir divider (6); And biologic packing material filter bed is provided with in described each unit chamber; Be provided with the second submersible pump (13) in 4th aerobic section (a8), the second submersible pump (13) is communicated with the first anoxic section (a3) by the second return line (10); Described medium sediment pool (a5) bottom is connected with shore pipe (8), and the inside of medium sediment pool (a5) is provided with the first submersible pump (9) and is communicated with the first anaerobism section (a2) by the first return line (5); The 3rd submersible pump (14) is provided with in water collecting basin (a10), 3rd submersible pump (14) is connected with Fenton fluidized bed processing unit by water shoot (15), be equipped with tube aerator (7) in first anoxic section (a3), the first aerobic section (a4), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8), tube aerator (7) is all connected with the first gas blower (12) by the first aerating pipelines (11);
The biologic packing material filter bed arranged in above-mentioned each unit chamber is made up of biologic packing material fixed frame (3) and biological multiplication filler (4), and biology multiplication filler grows the microbial film be made up of engineering bacteria; Described biologic packing material fixed frame (3) is made up of triplex glass steel, is directly fixed on the angle bar in Stainless Steel Shell; The hole forming the glass reinforced plastic of fixed frame (3) is not more than 40mm × 40mm; Triplex glass steel forms two-layer lattice space unit; Each space cell filled biomass multiplication filler (4), biological multiplication filler (4) is the 20%-70% of the volume of each biological section in the total amount of each biological section.
The water (flow) direction of each anaerobism section above-mentioned, anoxic section, aerobic section flows into by above first junior unit chamber, after described dividing plate intercepts up, opening part flows to the second adjacent junior unit chamber from below, then flows into next processing section by the overflow weir that described dividing plate is formed after lower baffle; And biologic packing material filter bed is provided with in described unit chamber;
Described Fenton fluidized bed processing unit comprises Fenton oxidation tower (b1), medicine system (b2), inclined-plate clarifying basin (b3); Described Fenton oxidation tower (b1) is communicated with by chemical feed pipe with medicine system (b2); Described Fenton oxidation tower (b1) is communicated with by fluid with inclined-plate clarifying basin (b3);
The side, upper end of the tower top mouth of described Fenton oxidation tower (b1) is inlet flume (16), opposite side is for overflowing tank (23), solid-liquid separator (17), heterogeneous oxidation district (18), cyclone water distributor (20), water distributor (22) is followed successively by from top to bottom in tower body, cyclone water distributor (20) is connected with heterogeneous oxidation district (18), and water distributor (22) is communicated with inlet flume (16) by the circulation tube (19) outside tower, recycle pump (21); And the inlet flume (16) of described Fenton oxidation tower (b1) is connected by water shoot (15) with described biochemical treatment unit;
Heterogeneous oxidation district is filled with quartz sand in (18), and the tower body place of heterogeneous oxidation district (18) correspondence is provided with a quartz sand dispensing port (24).
Described medicine system (b2) comprises the first dosing pump (27), the first drug-transmitting pipe (27a), the second dosing pump (28), the second drug-transmitting pipe (28a), the 3rd dosing pump (29), the 3rd drug-transmitting pipe (29a), the 4th dosing pump (30) and the 4th drug-transmitting pipe (30a); Described 3rd dosing pump (29), the 4th dosing pump (30) make the inlet flume of Fenton oxidation tower (b1) (16) be connected with dosing tank respectively by the 3rd drug-transmitting pipe (29a) with the 4th drug-transmitting pipe (30a); Described first dosing pump (27), the second dosing pump (28) are connected with inclined-plate clarifying basin (b3) with the second drug-transmitting pipe (28a) respectively by the first drug-transmitting pipe (27a);
Described inclined-plate clarifying basin (b3) comprises settling tank, neutralization tank (25), stripping pond (26), rectification wall (33), swash plate (34), perforated sludge discharge pipe (35), sludge bucket (36), spoiler (37), water leg (38);
Settling tank is provided with an import and an outlet, if the outside of import is stripping pond (26), the outside setting out mouth is water leg (38), stripping pond (26) and neutralization tank (25) and between separated by dividing plate, multiple blowdown bucket (36) is provided with bottom settling tank, the bottom of blowdown bucket (36) is provided with perforated sludge discharge pipe (35), a vertical rectification wall (33) is also provided with in settling tank, swash plate (34) is positioned at settling tank top, one end-rack of swash plate (34) is on rectification wall (33), another end-rack is in the settling tank side setting out mouth, and lower than outlet, be spoiler (37) below swash plate (34), the bottom of water leg (38) is provided with second row water pipe (39).
First dosing pump (27) of medicine system (b2) is connected with stripping pond (26) by the first drug-transmitting pipe (27a), second dosing pump (28) is connected with neutralization tank (25) by the second drug-transmitting pipe (28a), and the tank (23) that overflows of Fenton oxidation tower (b1) is connected with neutralization tank (25) by pipeline; Stripping pond (26) is connected with gas blower (31) respectively with neutralization tank (25).
In the application of concrete biochemical treatment process, oil refining sewerage directly enters the first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), medium sediment pool (a5), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8) successively after sandfiltration pot (a1) filters; The hydraulic flow state of sewage in individual processing section belongs between mixed flow and plug-flow, is conducive to the efficient process of engineering bacteria to sewage; The hydraulic detention time of described first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8) every section is 0.5-10h.
Sewage enters medium sediment pool (5) bottom after the first aerobic section (a4) simultaneously, then flows into the second aerobic section (a6) at the effluent weir by medium sediment pool; The a small amount of mud produced via the first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4) deposits at described medium sediment pool, part is back to the first anaerobism section (a2) by the first submersible pump (9) through the first return line (5), and reflux ratio is 0.5-10.0; The second submersible pump (13) is provided with in 4th aerobic section (a8), by the second return line (10) by sewage backflow to the first anoxic section (a3) after the 4th aerobic section (a8) intermediate portion reason, reflux ratio is 0.5-10.0; Be provided with shore pipe (8) in medium sediment pool (a5) below, regularly carry out spoil disposal;
Below described biologic packing material bed, be laid with the first aerating pipelines (11), the inlet end of described first aerating pipelines (11) is connected with the first gas blower (12); Tube aerator (7) is provided with in the outlet side of described first aerating pipelines (11), the aperture of air on described tube aerator compound film sheet is supplied to the microbial film on biological multiplication filler, and control anaerobism section dissolved oxygen is 0-0.2mg/L, anoxic section dissolved oxygen is 0-0.5mg/L, aerobic section dissolved oxygen is 2-6mg/L;
The water outlet of the 4th aerobic section (a8) enters water collecting basin (a10) via sandfiltration pot (a9), then through entering the 3rd submersible pump (14) and water shoot (15) enters water leg (16); Described 3rd dosing pump (29) adds H by the 3rd drug-transmitting pipe (29a) to the inlet flume (16) in described Fenton oxidation tower (b1) simultaneously
2o
2; Described 4th dosing pump (30) adds FeSO by the 4th drug-transmitting pipe (30a) to the inlet flume (16) in described Fenton oxidation tower b1
47H
2o; Described H
2o
2and Fe
2+molar concentration rate is (0.05-20): 1; The water outlet of described biochemical treatment unit is entered in the inlet flume (16) in described Fenton oxidation tower (b1) by water shoot (15), and and H
2o
2, FeSO
47H
2o mixes;
Water in inlet flume (16) enters water distributor (22) through circulation tube (19), recycle pump (21), enter heterogeneous oxidation district (18) by cyclone water distributor (20) successively again to process, recirculated water keeps certain upflow velocity 10-200m/h, makes quartz sand be fluidization; Fe in oxidizing reaction
2+with H
2o
2the Fe generated
3+be adsorbed on quartz sand surface with the form of crystallization or precipitation, this part Fe
3+owing to heterocatalysis oxidizing reaction occurring thus makes the add-on of Fenton reagent reduce, make the mud generated reduce simultaneously; Water after heterogeneous oxidation district (18) process is separated through solid-liquid separator (17), overwhelming majority quartz sand still remains in heterogeneous oxidation district (18), treated water, part flows into through overflow weir and overflows tank (23); The described water outlet overflowing tank (23) enters the neutralization tank (25) in inclined-plate clarifying basin (b3) by the road; Second dosing pump (28) adds NaOH by the second drug-transmitting pipe (28a) to described neutralization tank (25) simultaneously, regulates water pH6-8, forms iron mud; The outlet side of described second aerating pipelines (32) is provided with tube aerator, and the aperture of air on tube aerator compound film sheet is supplied to this neutralization tank, makes Fenton oxidation tower (b1) process water outlet and mixes with NaOH; Described iron mud enters stripping pond (26) through dividing plate overflow; First dosing pump (27) adds polyacrylamide by the first drug-transmitting pipe (27a) to described stripping pond (26), promote that iron mud flocculates into larger flocs unit, described second aerating pipelines (32) air feed is to stripping pond (26), stripping 10-20min, slough the small oxygen bubble produced in reaction on the one hand, in order to avoid coagulate sludge floats, on the other hand iron mud is mixed with polyacrylamide below;
In stripping pond (26), iron mud flocs unit mixed solution flows into inclined-plate clarifying basin (b3) by the road, in inclined-plate clarifying basin (b3), iron mud settles down, iron mud precipitation is discharged by perforated sludge discharge pipe (35) after sludge bucket (36) is collected, the iron mud flocs unit mixed solution residence time is 0.5-10h, slough the suspended substance in water, supernatant liquor through water leg (38) collect after through water shoot qualified discharge.
Described second gas blower (31) is connected with neutralization tank (25), stripping pond (26) by the second aerating pipelines (32); Described neutralization tank (25), stripping pond (26) are separated by dividing plate; Described second aerating pipelines (32) is in the bottom of neutralization tank (25), stripping pond (26).
Described first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8) are provided with described biologic packing material bed; Biology multiplication filler (4) that described biologic packing material bed comprises biologic packing material fixed frame (3) and is fixed therein; Biology multiplication filler grows the microbial film be made up of engineering bacteria; Described biologic packing material fixed frame 3 is made up of triplex glass steel, is directly fixed on the angle bar in Stainless Steel Shell; The hole forming the glass reinforced plastic of fixed frame 3 is not more than 40mm × 40mm, runs off to prevent biological multiplication filler; Triplex glass steel forms two-layer lattice space unit; Each space cell filled biomass multiplication filler (4), filler adheres to engineering bacteria, the total amount of biological multiplication filler (4) is not less than the 20%-70% of each biological section volume, ensure that biological multiplication filler is in suspended state, not easily blocks.
Described quartz sand dispensing port (24) is in Fenton oxidation tower (b1) top position; In Fenton oxidation tower (b1), add small-particle carrier quartz sand by described quartz sand dispensing port (24), in Fenton oxidation tower (b1), form heterogeneous oxidation district (18).
The utility model is mainly used in the oil refining sewerage after the process of the pretreatment unit such as oil removal, air supporting, and the principal feature of this sewage is: principal pollutant are COD, ammonia nitrogen, petroleum-type and volatile phenol, and the fluctuation of concentration of COD and ammonia nitrogen is larger.Biochemical treatment unit can by the most COD in oil refining sewerage and most ammonia nitrogen removal through multi-stage biological treatment system, the draining of biochemical unit contains more refractory organic, then can more than 60% be removed in Fenton fluidized bed processing unit, and not containing pathogenic microorganism in water outlet after Fenton Strong oxdiative.Through integrated combination system process petroleum waste water, the total removal rate of COD, ammonia nitrogen all can reach more than 95%, and water outlet meets the A standard of " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) primary standard.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil refining sewerage combination process integrating device;
A1 sandfiltration pot, a2 first anaerobism section, a3 first anoxic section, a4 first aerobic section, a5 medium sediment pool, a6 second aerobic section, a7 the 3rd aerobic section, a8 the 4th aerobic section, a9 sandfiltration pot, a10 water collecting basin, b1Fenton oxidizing tower, b2 medicine system, b3 inclined-plate clarifying basin, 1a oil refining sewerage water inlet pipe, 1b rising pipe, 1c rising pipe, 1d rising pipe, 2 sand filtration fillers, 3 biologic packing material fixed frames, with 4 biological multiplication fillers, 5 first return lines, 6 weir dividers, 7 tube aerators, 8 shore pipes, 9 first submersible pumps, 10 second return lines, 11 first aerating pipelines, 12 first gas blowers, 13 second submersible pumps, 14 the 3rd submersible pumps, 15 water shoots, 16 inlet flumes, 17 solid-liquid separators, 18 heterogeneous oxidation districts, 19 circulation tubes, 20 cyclone water distributor, 21 recycle pumps, 22 water distributors, 23 effluent troughs, 24 quartz sand dispensing ports, 25 neutralization tanks, 26 stripping ponds, 27 first dosing pumps, 27a first drug-transmitting pipe, 28 second dosing pumps, 28a second drug-transmitting pipe, 29 the 3rd dosing pumps, 29a the 3rd drug-transmitting pipe, 30 the 4th dosing pumps, 30a the 4th drug-transmitting pipe, 31 second gas blowers, 32 second aerating pipelines, 33 rectification walls, 34 swash plates, 35 perforated sludge discharge pipes, 36 sludge buckets, 37 spoilers, 38 water legs, 39 second row water pipes.
Embodiment
Below in conjunction with embodiment, the utility model is described further, but the utility model is not limited to following examples.
The word combined below is illustrated by accompanying drawing.Fig. 1 is the structural representation of oil refining sewerage combination process integrating device.
A is biochemical treatment unit, be made up of sandfiltration pot a1, anaerobism section a2, anoxic section a3, aerobic section a4, medium sediment pool a5, aerobic section a6, aerobic section a7, aerobic section a8, sandfiltration pot a9 and water collecting basin a10, comprise: water inlet pipe 1a, rising pipe 1b, rising pipe 1c, rising pipe 1d, sand filtration filler 2, biologic packing material fixed frame 3, biological multiplication filler 4, return line 5, weir divider 6, tube aerator 7, shore pipe 8, submersible pump 9, return line 10, aerating pipelines 11, submersible pump 12, gas blower 13, submersible pump 14, water shoot 15.
Sandfiltration pot a1 is located at the top of multi-stage biological treatment system, and this sandfiltration pot is equipped with water inlet pipe 1a, sand filtration filler 2 and rising pipe 1b; The bottom of sandfiltration pot a1 is connected with anaerobism section a2, anaerobism section a2 and anoxic section a3, aerobic section a4, medium sediment pool a5, aerobic section a6, aerobic section a7, aerobic section a8 multi-stage biological treatment system in series; Medium sediment pool a5 is set up between aerobic section a4 and aerobic section a6.Biologic packing material bed is equipped with at the middle part of anaerobism section a2, anoxic section a3, aerobic section a4, aerobic section a6, aerobic section a7 and aerobic section a8.Anaerobism section a2 and anoxic section a3, aerobic section a4, medium sediment pool a5, aerobic section a6, aerobic section a7 and aerobic section a8 are separated by weir divider 6.The biologic packing material fixed frame 3 of this filler is made up of triplex glass steel, is directly fixed on the angle bar in Stainless Steel Shell.The hole forming the glass reinforced plastic of fixed frame 3 is not more than 40mm × 40mm, runs off to prevent biological multiplication filler; Triplex glass steel forms two-layer lattice space unit; Each space cell filled biomass filler 3, filler adheres to engineering bacteria, and the total amount of biologic packing material 3 is the 40%-70% of each biological section volume.Below bed of packings, establish aerating pipelines 11, aerating pipelines is installed tube aerator 6.Be provided with shore pipe 8 in the bottom of medium sediment pool a5, get rid of remaining settled sludge.In medium sediment pool a5, be provided with submersible pump 9, by return line 5, the partial sludge deposited in medium sediment pool a5 be back to anaerobism section a2.In aerobic section a8, be provided with submersible pump 12, by return line 10 by the sewage backflow in aerobic section a8 after partially disposed to anoxic section a3, reflux ratio is 1.0-3.0.Aerobic section a8 is connected by rising pipe 1c with sandfiltration pot a9, and sandfiltration pot a9 water outlet enters water collecting basin a10 by rising pipe 1d, and this water collecting basin contains submersible pump 14 and water shoot 15.
B is Fenton fluidized bed processing unit, by Fenton oxidation tower b1, medicine system b2, inclined-plate clarifying basin b3 forms, comprise: inlet flume 16, solid-liquid separator 17, heterogeneous oxidation district 18, circulation tube 19, cyclone water distributor 20, recycle pump 21, water distributor 22, overflow tank 23, quartz sand dispensing port 24, neutralization tank 25, stripping pond 26, dosing pump 27, drug-transmitting pipe 27a, dosing pump 28, drug-transmitting pipe 28a, dosing pump 29, drug-transmitting pipe 29a, dosing pump 30, drug-transmitting pipe 30a, gas blower 31, aerating pipelines 32, rectification wall 33, swash plate 34, perforated sludge discharge pipe 35, sludge bucket 36, spoiler 37, water leg 38, water shoot 39.
Fenton processing unit is supplied water by water collecting basin a10, and water collecting basin a10 is on Fenton oxidation tower b1 top; Biochemical treatment unit water shoot 15 is connected with Fenton oxidation tower b1 top, and is connected with the inner upper inlet flume 16 of Fenton oxidation tower b1; Dosing pump 29 in medicine system b2, dosing pump 30 are connected with inlet flume 16 with drug-transmitting pipe 30a respectively by drug-transmitting pipe 29a, and recycle pump 21 is also connected with inlet flume 16 via circulation tube 19.Solid-liquid separator 17 is fixed on the housing of Fenton oxidation tower b1, and it is between inlet flume 16 and heterogeneous oxidation district 18.In Fenton oxidation tower b1, throw in the quartz sand after screening by quartz sand dispensing port 24, in Fenton oxidation tower b1, form the carrier part in heterogeneous oxidation district 18.Water distributor 22 is connected with recycle pump 21, and cyclone water distributor 20 is positioned at the bottom in heterogeneous oxidation district 18, and is connected with water distributor 22.Neutralization tank 25, stripping pond 26, top at inclined-plate clarifying basin b3, overflow tank 23 and be connected with neutralization tank 25.Below neutralization tank 25, be provided with aerating pipelines 32, aerating pipelines installs tube aerator.Dosing pump 27 in medicine system b2, dosing pump 28 are connected with two cells of coagulation basin with drug-transmitting pipe 28a respectively by drug-transmitting pipe 27a.Inclined-plate clarifying basin b3 top is made up of swash plate 34, and bottom is made up of perforated sludge discharge pipe 35, sludge bucket 36, and the iron mud precipitated is discharged by perforated sludge discharge pipe 35.Water shoot 39 is connected with water leg 38, and process water is directly discharged by water shoot 39.
Embodiment 1
Use above-mentioned utility model to carry out the experiment of high saliferous Waste water treatment, the operational condition of experiment is as follows:
Biochemical treatment unit: the pH value of oil refining sewerage is 7.5-9.0, temperature is 30-42 DEG C, multi-stage biological treatment system anaerobism section dissolved oxygen is 0-0.2mg/L, anoxic section dissolved oxygen is 0-0.5mg/L, aerobic section dissolved oxygen is 3-4mg/L, and hydraulic detention time is 43.2h, and reflux ratio is 1.Fenton fluidized bed processing unit: pH value is 3.0-4.0, H
2o
2throwing amount is 1.0g/L, FeSO
4throwing amount is 2.0g/L, the reaction times is 30min.Inlet and outlet water COD, ammonia nitrogen concentration and clearance are in table 1.COD clearance is 96.54%, ammonia nitrogen removal frank is 99.72%, water outlet meets the A standard of " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) primary standard, and experiment shows, this treatment system has good treatment effect to oil refining sewerage.
High saliferous Waste water treatment experiment removal effect (unit: mg/L) of table 1
Embodiment 2
Use above-mentioned utility model to carry out the experiment of mixed type Waste water treatment, the operational condition of experiment is as follows:
Biochemical treatment unit: the pH value of oil refining sewerage is 7.45-8.43, temperature is 34-41.2 DEG C, multi-stage biological treatment system anaerobism section dissolved oxygen is 0-0.2mg/L, anoxic section dissolved oxygen is 0-0.5mg/L, aerobic section dissolved oxygen is 3-4mg/L, and hydraulic detention time is 24h, and reflux ratio is 1.Fenton fluidized bed processing unit: pH value is 3.0-4.0, H
2o
2throwing amount is 1.5g/L, FeSO
4throwing amount is 3.0g/L, the reaction times is 45min.Inlet and outlet water COD, ammonia nitrogen concentration and clearance are in table 2.COD clearance is 95.50%, ammonia nitrogen removal frank is 97.78%, water outlet meets the A standard of " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) primary standard, and experiment shows, this treatment system has good treatment effect to oil refining sewerage.
Table 2 mixed type Waste water treatment experiment removal effect (unit: mg/L)
Claims (5)
1. oil refining sewerage integrated combination treatment system, described system comprises biochemical treatment unit and Fenton fluidized bed processing unit; Described biochemical treatment unit is connected with described Fenton fluidized bed processing unit by discharge pipe line;
Described biochemical treatment unit comprises sandfiltration pot (a1), the first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), medium sediment pool (a5), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8), sandfiltration pot (a9) and water collecting basin (a10); Described sandfiltration pot (a1) is communicated with by rising pipe (1b) fluid with first anaerobism section (a2) one end, first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), medium sediment pool (a5), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8), by fluid serial communication, form multi-stage biological treatment system; Described 4th aerobic section (a8) is communicated with by rising pipe (1c) fluid with sandfiltration pot (a9) one end; Described sandfiltration pot (a9) is also communicated with by rising pipe (1d) fluid with water collecting basin (a10);
Described sandfiltration pot (a1) comprises oil refining sewerage water inlet pipe (1a), sand filtration filler (2) and rising pipe (1b), and described first anaerobism section (a2), the first anoxic section (a3), the first aerobic section (a4), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8) are separated into two little unit chambeies by weir divider (6); And biologic packing material filter bed is provided with in described each unit chamber; Be provided with the second submersible pump (13) in 4th aerobic section (a8), the second submersible pump (13) is communicated with the first anoxic section (a3) by the second return line (10); Described medium sediment pool (a5) bottom is connected with shore pipe (8), and the inside of medium sediment pool (a5) is provided with the first submersible pump (9) and is communicated with the first anaerobism section (a2) by the first return line (5); The 3rd submersible pump (14) is provided with in water collecting basin (a10), 3rd submersible pump (14) is connected with Fenton fluidized bed processing unit by water shoot (15), be equipped with tube aerator (7) in first anoxic section (a3), the first aerobic section (a4), the second aerobic section (a6), the 3rd aerobic section (a7), the 4th aerobic section (a8), tube aerator (7) is all connected with the first gas blower (12) by the first aerating pipelines (11);
Described Fenton fluidized bed processing unit comprises Fenton oxidation tower (b1), medicine system (b2), inclined-plate clarifying basin (b3); Described Fenton oxidation tower (b1) is communicated with by chemical feed pipe with medicine system (b2); Described Fenton oxidation tower (b1) is communicated with by fluid with inclined-plate clarifying basin (b3);
The side, upper end of the tower top mouth of described Fenton oxidation tower (b1) is inlet flume (16), opposite side is for overflowing tank (23), solid-liquid separator (17), heterogeneous oxidation district (18), cyclone water distributor (20), water distributor (22) is followed successively by from top to bottom in tower body, cyclone water distributor (20) is connected with heterogeneous oxidation district (18), and water distributor (22) is communicated with inlet flume (16) by the circulation tube (19) outside tower, recycle pump (21); And the inlet flume (16) of described Fenton oxidation tower (b1) is connected by water shoot (15) with described biochemical treatment unit;
Described medicine system (b2) comprises the first dosing pump (27), the first drug-transmitting pipe (27a), the second dosing pump (28), the second drug-transmitting pipe (28a), the 3rd dosing pump (29), the 3rd drug-transmitting pipe (29a), the 4th dosing pump (30) and the 4th drug-transmitting pipe (30a); Described 3rd dosing pump (29), the 4th dosing pump (30) make the inlet flume of Fenton oxidation tower (b1) (16) be connected with dosing tank respectively by the 3rd drug-transmitting pipe (29a) with the 4th drug-transmitting pipe (30a); Described first dosing pump (27), the second dosing pump (28) are connected with inclined-plate clarifying basin (b3) with the second drug-transmitting pipe (28a) respectively by the first drug-transmitting pipe (27a);
Described inclined-plate clarifying basin (b3) comprises settling tank, neutralization tank (25), stripping pond (26), rectification wall (33), swash plate (34), perforated sludge discharge pipe (35), sludge bucket (36), spoiler (37), water leg (38);
Settling tank is provided with an import and an outlet, if the outside of import is stripping pond (26), the outside setting out mouth is water leg (38), stripping pond (26) and neutralization tank (25) and between separated by dividing plate, multiple blowdown bucket (36) is provided with bottom settling tank, the bottom of blowdown bucket (36) is provided with perforated sludge discharge pipe (35), a vertical rectification wall (33) is also provided with in settling tank, swash plate (34) is positioned at settling tank top, one end-rack of swash plate (34) is on rectification wall (33), another end-rack is in the settling tank side setting out mouth, and lower than outlet, be spoiler (37) below swash plate (34), the bottom of water leg (38) is provided with second row water pipe (39),
First dosing pump (27) of medicine system (b2) is connected with stripping pond (26) by the first drug-transmitting pipe (27a), second dosing pump (28) is connected with neutralization tank (25) by the second drug-transmitting pipe (28a), and the tank (23) that overflows of Fenton oxidation tower (b1) is connected with neutralization tank (25) by pipeline; Stripping pond (26) is connected with gas blower (31) respectively with neutralization tank (25).
2. according to the oil refining sewerage integrated combination treatment system of claim 1, it is characterized in that, the biologic packing material filter bed arranged in each unit chamber is made up of biologic packing material fixed frame (3) and biological multiplication filler (4), and biology multiplication filler grows the microbial film be made up of engineering bacteria; Described biologic packing material fixed frame (3) is made up of triplex glass steel, is directly fixed on the angle bar in Stainless Steel Shell; The hole forming the glass reinforced plastic of fixed frame (3) is not more than 40mm × 40mm; Triplex glass steel forms two-layer lattice space unit; Each space cell filled biomass multiplication filler (4), biological multiplication filler (4) is the 20%-70% of the volume of each biological section in the total amount of each biological section.
3. according to the oil refining sewerage integrated combination treatment system of claim 1, it is characterized in that, the water (flow) direction of each anaerobism section above-mentioned, anoxic section, aerobic section flows into by above first junior unit chamber, after described dividing plate intercepts up, opening part flows to the second adjacent junior unit chamber from below, then flows into next processing section by the overflow weir that described dividing plate is formed after lower baffle; And biologic packing material filter bed is provided with in described unit chamber.
4. according to the oil refining sewerage integrated combination treatment system of claim 1, it is characterized in that, heterogeneous oxidation district is filled with quartz sand in (18), and the tower body place of heterogeneous oxidation district (18) correspondence is provided with a quartz sand dispensing port (24).
5. according to the oil refining sewerage integrated combination treatment system of claim 1, it is characterized in that, described second gas blower (31) is connected with neutralization tank (25), stripping pond (26) by the second aerating pipelines (32); Described neutralization tank (25), stripping pond (26) are separated by dividing plate; Described second aerating pipelines (32) is in the bottom of neutralization tank (25), stripping pond (26).
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