CN105776760A - Advanced treatment system and method for crushed coal pressurized gasification waste water - Google Patents
Advanced treatment system and method for crushed coal pressurized gasification waste water Download PDFInfo
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- CN105776760A CN105776760A CN201610248278.XA CN201610248278A CN105776760A CN 105776760 A CN105776760 A CN 105776760A CN 201610248278 A CN201610248278 A CN 201610248278A CN 105776760 A CN105776760 A CN 105776760A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 63
- 239000003245 coal Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000002309 gasification Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 144
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 117
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 54
- 230000003197 catalytic effect Effects 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 238000006385 ozonation reaction Methods 0.000 claims description 48
- 238000001914 filtration Methods 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 29
- 238000009826 distribution Methods 0.000 claims description 28
- 238000005842 biochemical reaction Methods 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 8
- 238000009287 sand filtration Methods 0.000 claims description 8
- 230000001112 coagulating effect Effects 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 4
- 238000011001 backwashing Methods 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 44
- 239000000126 substance Substances 0.000 abstract description 39
- 238000005273 aeration Methods 0.000 abstract description 13
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 3
- 238000006303 photolysis reaction Methods 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 230000015843 photosynthesis, light reaction Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- -1 hydroxyl radical free radical Chemical class 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000003851 biochemical process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 150000002391 heterocyclic compounds Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000012028 Fenton's reagent Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
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- 239000010865 sewage Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
Abstract
The invention discloses an advanced treatment system and method for crushed coal pressurized gasification waste water, and belongs to the field of waste water treatment. The system comprises a first-stage filter lift pump, a first-stage filter device, an ozone catalytic oxidation reaction device, a No.1 buffer water tank, a first-stage biological aerated filter (BAF) lift pump, a first-stage BAF system, a No.2 buffer water tank, a second-stage filter lift pump, a second-stage filter device, an ultraviolet and ozone reaction device, a No.3 buffer water tank, a second-stage BAF lift pump, a second-stage BAF system and a product water tank which are connected in sequence. According to the system, organic substances which are difficult to degrade are removed through ozone catalytic oxidation, and the biodegradability of the waste water is improved; biodegradable organic substances subjected to ozone oxidation are removed through microorganisms in the first-stage BAF system; the ultraviolet and ozone reaction device improves the biodegradability of the waste water again through photolysis hydroxyl free radicals, and the biodegradable organic substances subjected to oxidation are removed through the second-stage BAF system. By means of two-stage oxidation and biochemical treatment, the ozone dosage is low, the aeration quantity is low, the treatment effect is good, the operating cost is low, and operation is easy.
Description
Technical field
The present invention relates to field of waste water treatment, particularly relate to advanced treatment system and the method for a kind of crushed coal pressure gasifying waste water.
Background technology
The energy resource structure of the few gas of China's richness coal oil starvation determines and utilizes the superiority development Coal Chemical Industry of coal resources in China relative abundance to become a kind of feasible means solving energy problem, the wherein most important thing being prepared by Development of Coal chemical industry of synthesis gas.Crushed coal pressure gasifying technique (with lurgi gasifier for representative) technical maturity, investment and operating cost are relatively low, are widely used in coal gasification particularly coal preparing natural gas.But restricting the subject matter of this technology application during crushed coal pressure gasifying wastewater treatment, a lot of Coal Gasification Projects are halted due to environmental issue, and operation project causes environmental problem to be denounced also due to wastewater treatment is not up to standard.This is because the waste water that this gasifying process produces contains the biodegradable organic compoundses such as substantial amounts of phenols, arene, heterocyclic compound；And the oil containing high concentration, ammonia nitrogen, salt；Biodegradability is very poor, therefore adopts conventional " pretreatment+biochemical treatment " be difficult to qualified discharge or carry out reuse further, therefore develops efficient, practical advanced treatment process and be particularly important.
Coal gasification waste water advanced treatment process common at present includes biochemical process and the big class of physico-chemical process two.Biochemical process is mainly BAF and membrane bioreactor.Physico-chemical process includes the technology such as coagulation, absorption, membrance separation, microwave treatment, Inner electrolysis, advanced oxidation.The high-level oxidation technology that water processes is that a class produces hydroxyl radical free radical (HO) at normal temperatures and pressures, and water pollutant carries out the technology of oxidative degradation.The high-level oxidation technology being applied in Sewage advanced treatment includes the related oxidized technology of ozone, Fenton reagent oxidation, electrochemistry, photocatalysis, ultrasonic etc..Due to coal gasification waste water after " pretreatment+biochemical treatment " PROCESS FOR TREATMENT in water outlet the overwhelming majority be little molecule hardly degraded organic substance, and the HO that advanced oxidation produces can without the oxidation overwhelming majority organic pollution selected, therefore high-level oxidation technology becomes coal gasification waste water treatment research and application focus.But most of high-level oxidation technologies are high also in laboratory research stage, investment and operating cost, can practicality not strong.Ozone is a kind of strong oxidizer, is widely used in water treatment field.Ozone reaction in water can be divided into direct reaction and indirect reaction, and direct reaction refers to that ozone molecule is directly and other substance reaction, and indirect reaction refers to the reaction of HO and other material utilizing ozone decomposed to produce.Ozone direct reaction is higher for material (such as the phenol) efficiency with ozone with relatively high reaction rate constant；But the material (such as Nitrobenzol, alkane, the acid of little molecule etc.) for difficult ozonisation is inefficient.In recent years, based on ozone, develop multiple advanced oxidation processes, by promoting that HO produces, hardly degraded organic substance in more efficient decomposition water, become one of focus of water treatment field research.Water outlet both containing due to coal gasification waste water the Organic substance of the easy ozonisation such as phenols after biochemical treatment, having contained again the Organic substance of the difficult ozonisation such as benzene series and long chain alkane, so in its advanced treating, being well suited for the related oxidized technology of using ozone.The extensive production domesticization adding ozonator in recent years greatly reduces its investment cost, and the oxidation technology that therefore ozone is relevant has good application prospect in advanced treating.
Summary of the invention
It is an object of the invention to can not effectively remove the hardly degraded organic substance in crushed coal pressure gasifying waste water for conventional " pretreatment+biochemical treatment ", water outlet cannot qualified discharge or further reuse problem, it is proposed to a kind of two-part ozone high grade oxidation is in conjunction with the advanced treatment system of the crushed coal pressure gasifying waste water of biochemical treatment and method.
For solving above-mentioned technical problem, the present invention provides the advanced treatment system of a kind of crushed coal pressure gasifying waste water, including:
Single filter elevator pump, first level filtering device, catalytic ozonation reaction unit, 1# cushion water pot, one-level BAF elevator pump, one-level BAF system, 2# buffering water pot, cascade filtration elevator pump, two-stage filter, UV/ozone reaction unit, 3# buffering water pot, two grades of BAF elevator pumps, two grades of BAF systems and product water pot；Wherein,
Described single filter elevator pump is provided with water inlet pipe, and the water side of described single filter elevator pump and first level filtering device, catalytic ozonation reaction unit, 1# cushion water pot, one-level BAF elevator pump, one-level BAF system, 2# cushions water pot, cascade filtration elevator pump, two-stage filter, UV/ozone reaction unit, 3# cushions water pot, two grades of BAF elevator pumps, two grades of BAF systems, product water pots are sequentially connected with；
Described product water pot is provided with the outlet pipe of water outlet after discharge processes.
The embodiment of the present invention also provides for the deep treatment method of a kind of crushed coal pressure gasifying waste water, adopts the advanced treatment system of the present invention, comprises the following steps:
Pending crushed coal pressure gasifying wastewater biochemical water outlet enters described advanced treatment system after coagulating treatment, sequentially enters the first level filtering device of this advanced treatment system, catalytic ozonation reaction unit, one-level BAF system, two-stage filter, UV/ozone reaction unit, two grades of BAF systems process；Wherein, in described catalytic ozonation reaction unit and UV/ozone reaction unit, pass into ozone gas respectively and carry out oxidation reaction；In described one-level BAF system and two grades of BAF systems, pass into air respectively and carry out biochemical reaction；Arrange outside water outlet up to standard after process.
The invention have the benefit that by by first level filtering device, catalytic ozonation reaction unit, one-level BAF system, two-stage filter, UV/ozone reaction unit, two grades of organic connections of BAF system, form a kind of advanced treatment system that crushed coal pressure gasifying wastewater biochemical coagulation water outlet once can be carried out single filter, one-level catalytic ozonation, one-level biochemical treatment, cascade filtration, two grades of UV/ozone oxidation, secondary biochemical treatment.Owing to crushed coal pressure gasifying waste water is preprocessed, after biochemical treatment, the biodegradable pollutant overwhelming majority has been removed by, in water outlet, great majority are hardly degraded organic substance, biodegradability extreme difference, bio-chemical effluent removes, through coagulating treatment, the first level filtering device entering described advanced treatment system in water after most of float, can by a small amount of suspended substance removal remaining in coagulation water outlet, reduce the blocking of the float consumption to catalytic ozonation system ozone and ozone catalyst thereof, improve catalytic ozonation efficiency.The catalyst filled in device for catalyzing and oxidating ozone can produce hydroxyl radical free radical, hardly degraded organic substance in oxidation water by catalysis ozone, improves the biodegradability of waste water.Owing to catalytic ozonation effect improves the biodegradability of waste water, after this water outlet enters one-level BAF, being attached to the microorganism on filler can degrade further by the pollutant of bio-degradable in waste water.After one-level biochemical treatment, the biodegradability of waste water reduces again, now enter back into two grades of UV/ozone systems and carry out chemical oxidation, wastewater biodegradability improves again, now again through the process of two grades of BAFs, labile organic compound after ozone oxidation is degraded further, so that water outlet pollutant levels reduce further.Owing to after one-level catalytic ozonation and one-level biochemical treatment, Pollutants in Wastewater concentration is relatively low, and colourity is very low, therefore UV/ozone oxidation is selected in secondary chemical oxidation, ultraviolet light penetrance is strong, ultraviolet light reacts reinforcement with ozone and Organic substance in water, the generation amount of free radical increases, and is more beneficial for the removal of low-concentration organic.Owing to improving biodegradability while that catalytic ozonation and UV/ozone oxidation purpose being to remove hardly degraded organic substance, therefore ozone dosage only greatly reduces by situation about removing for the purpose of pollutant relatively；And the hydroxyl free base unit weight that catalytic ozonation and UV/ozone oxidation itself produce relative to independent ozone oxidation system increases, the removal rate of hardly degraded organic substance is accelerated, therefore to such waste water more advantage.Improve biodegradability by ozone oxidation, reduce Pollutants in Wastewater concentration by biochemical treatment；And rich in oxygen in water after ozone oxidation, the aeration rate that subsequent biochemical processes also reduces；Make ozone dosage and aeration rate reduce by the combination of two-stage ozone oxidation and biochemical treatment, overall energy consumption reduces, the removal ability of hardly degraded organic substance is increased.In sum, the combination adopting the different ozone oxidation of two-stage and Two-Stage Biochemical to process, is the selection process determined of the character according to crushed coal pressure gasifying biochemistry coagulation water outlet.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the schematic diagram of crushed coal pressure gasifying advanced waste treatment system of the present invention；
The parts that in figure, each label is corresponding are: 1-single filter elevator pump, 2-first level filtering device, 3-catalytic ozonation reaction unit, 4-1# cushions water pot, 5-one-level BAF elevator pump, 6-one-level BAF system, 7-2# cushions water pot, 8-cascade filtration elevator pump, 9-two-stage filter, 10-UV/ozone reaction unit (i.e. ultraviolet and ozone reaction device), 11-3# cushions water pot, bis-grades of BAF elevator pumps of 12-, bis-grades of BAF systems of 13-, 14-product water pot.
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into protection scope of the present invention.
Below in conjunction with specific embodiment, the invention will be further described
As shown in Figure 1, the embodiment of the present invention provides the advanced treatment system of a kind of crushed coal pressure gasifying waste water, can solve to add owing to crushed coal pressure gasifying waste water is preprocessed after biochemical treatment in waste water containing hardly degraded organic substance, make water outlet cannot qualified discharge or reuse problem, this system includes:
Single filter elevator pump, first level filtering device, catalytic ozonation reaction unit, 1# cushion water pot, one-level BAF (BAF) elevator pump, one-level BAF system, 2# buffering water pot, cascade filtration elevator pump, two-stage filter, UV/ozone reaction unit, 3# buffering water pot, two grades of BAF elevator pumps, two grades of BAF systems and product water pot；Wherein,
Described single filter elevator pump is provided with water inlet pipe, for introducing the crushed coal pressure gasifying wastewater biochemical water outlet water outlet after coagulating treatment that preparation processes, the water side of described single filter elevator pump and first level filtering device, catalytic ozonation reaction unit, 1# cushion water pot, one-level BAF elevator pump, one-level BAF system, 2# cushions water pot, cascade filtration elevator pump, two-stage filter, UV/ozone reaction unit, 3# cushions water pot, two grades of BAF (BAF) elevator pumps, two grades of BAF (BAF) systems, product water pots are sequentially connected with；
Described product water pot is provided with the outlet pipe of water outlet after discharge processes.
In above-mentioned advanced treatment system, catalytic ozonation reaction unit includes:
Catalytic ozonation reactor and ozonator, wherein said catalytic ozonation reactor inner bottom part is provided with water distribution system and gas distribution system, and middle part is filled with ozone catalyst, top is provided with collecting system；Described ozonator is oxygen source ozone generator, and this ozonator is connected with the gas distribution system in described catalytic ozonation reactor.
In above-mentioned advanced treatment system, described one-level BAF system includes: BAF, is provided with water distribution system and gas distribution system, and is filled with haydite and/or absorbent charcoal carrier in it；Described water distribution system is connected with the water pipe of this BAF；Backwashing pump, is connected with this BAF through water lines；Blower fan, is connected with the gas distribution system in this BAF through gas piping；
Described two grades of BAF systems all include: BAF, be provided with water distribution system and gas distribution system, and be filled with haydite and absorbent charcoal carrier in it；Described water distribution system is connected with the water pipe of this BAF；Backwashing pump, is connected with this BAF through water lines；Blower fan, is connected with the gas distribution system in this BAF through gas piping.
In above-mentioned advanced treatment system, described UV/ozone reaction unit includes: ultraviolet and ozone reactor, ultraviolet control module and ozonator；It is provided with in described ultraviolet and ozone reactor: water distribution system, gas distribution system and the ultraviolet lamp tube being evenly arranged；Described ultraviolet lamp tube controls module with described ultraviolet and is connected；Described gas distribution system is connected with described ozonator.
In above-mentioned advanced treatment system, described first level filtering device and two-stage filter all adopt any one in more medium filter, sand filtration filter, fabric filter, it is possible to effectively remove the float in water.
In above-mentioned advanced treatment system, described catalytic ozonation reaction unit shares an ozonator with UV/ozone reaction unit.
The present invention further provides the deep treatment method of a kind of crushed coal pressure gasifying waste water, adopt above-mentioned advanced treatment system, comprise the following steps:
Pending crushed coal pressure gasifying wastewater biochemical water outlet enters described advanced treatment system after coagulating treatment, sequentially enters the first level filtering device of this advanced treatment system, catalytic ozonation reaction unit, one-level BAF system, two-stage filter, UV/ozone reaction unit, two grades of BAF systems process；Wherein, in described catalytic ozonation reaction unit and UV/ozone reaction unit, pass into ozone gas respectively and carry out oxidation reaction；In described one-level BAF system and two grades of BAF systems, pass into air respectively and carry out biochemical reaction；Arrange outside water outlet up to standard after process.
Concrete, crushed coal pressure gasifying wastewater biochemical water outlet is squeezed into first level filtering device by single filter elevator pump after coagulating treatment, and first level filtering device can adopt the filters such as multi-medium filtering, sand filtration, fiber filter, it is possible to effectively remove the float in water；
Single filter water outlet enters catalytic ozonation reaction unit, ozone gas is passed in catalytic ozonation reaction unit, the ozone dosage passed into is 30～150mg ozone/L waste water, the hydraulic detention time carrying out oxidation reaction is 10～90min, can effectively remove the hardly degraded organic substances such as phenols in water, heterocyclic compound, polycyclic compound, improve wastewater biodegradability simultaneously；
Catalytic ozonation water outlet enters 1# and cushions water pot, squeeze in one-level BAF system by one-level BAF elevator pump, in one-level BAF system, pass into air carry out biochemical reaction, the volume ratio 0.5～10 of the air passed into and water inlet, the hydraulic detention time carrying out biochemical reaction is 1～4h, it is possible to have removal water in after catalytic ozonation the Organic substance of bio-degradable.
One-level BAF system water outlet enters 2# and cushions water pot, squeezes into two-stage filter by cascade filtration elevator pump, and two-stage filter can adopt the filters such as multi-medium filtering, sand filtration, fiber filter, it is possible to effectively remove a small amount of float in water.
Cascade filtration water outlet enters UV/ozone reaction unit, ozone gas is passed in UV/ozone reaction unit, and open uviol lamp and carry out oxidation reaction, the ozone dosage passed into is 30～150mg ozone/L waste water, and the uviol lamp power of UV/ozone reaction unit is 0.5～3kW/m3Waste water, the hydraulic detention time carrying out oxidation reaction is that 10～90min carries out oxidation reaction, it is possible to effectively removes in water remaining hardly degraded organic substance after catalytic ozonation and one-level BAF process, again improves wastewater biodegradability simultaneously；
UV/ozone oxidation water outlet enters 3# and cushions water pot, squeeze in two grades of BAF systems by two grades of BAF elevator pumps, in two grades of BAF systems, pass into air carry out biochemical reaction, the volume ratio of the air passed into and water inlet is 0.5～5, the hydraulic detention time carrying out biochemical reaction is 1～4h, it is possible to effectively remove in water the Organic substance of bio-degradable after UV/ozone oxidation；
The water outlet of two grades of BAF systems as standard water discharge discharge or carries out Treatment for Reuse through product water pot further.
Below in conjunction with Fig. 1, to adopting the said system advanced treatment process to crushed coal pressure gasifying waste water, it is specifically described, comprises the following steps:
The first level filtering device of described advanced treatment system is squeezed in crushed coal pressure gasifying wastewater biochemical water outlet after coagulating treatment by single filter elevator pump, this device can by a small amount of suspended substance removal remaining in coagulation water outlet, reduce the blocking of the float consumption to catalytic ozonation system ozone and ozone catalyst thereof, improve catalytic ozonation efficiency.Single filter water outlet enters device for catalyzing and oxidating ozone, and the catalyst filled in it can produce hydroxyl radical free radical, hardly degraded organic substance in oxidation water by catalysis ozone, improves the biodegradability of waste water.Catalytic ozonation water outlet enters 1# and cushions water pot, in buffering water pot, in water, the ozone of residual decomposes further, one-level BAF system is squeezed into afterwards by one-level BAF elevator pump, one-level BAF system is blasted air by blower fan and carries out aeration, Organic substance microbial degradation of attachment on loaded body in this device that can be biochemical after catalyzed ozone oxidation, due in ozone oxidation water outlet rich in oxygen, the more conventional BAF of aeration rate reduces.One-level BAF water outlet enters 2# and cushions water pot, then is squeezed into two-stage filter by cascade filtration elevator pump, and a small amount of float that this device produces in water after can removing ozone oxidation, to reduce the impact of the float pollution on follow-up ultraviolet lamp tube and ultraviolet light penetrance；Cascade filtration water outlet enters UV/ozone reaction unit, and in this device, ultraviolet light and ozone, organic pollution react, photodissociation Organic substance on the one hand, generate free radical on the other hand and aoxidize hardly degraded organic substance further, again improve wastewater biodegradability.UV/ozone oxidation water outlet enters 3# and cushions water pot, in buffering water pot, in water, the ozone of residual decomposes further, two grades of BAF systems are squeezed into afterwards by two grades of BAF elevator pumps, two grades of BAF systems are blasted air by blower fan and carry out aeration, Organic substance microbial degradation of attachment on loaded body in this device that can be biochemical after catalyzed ozone oxidation, due in ozone oxidation water outlet rich in oxygen, the more conventional BAF of aeration rate reduces.Two grades of BAF water outlets enter product water pot, are discharged by outlet pipe or carry out Treatment for Reuse.
It is exemplified below embodiment so that the advanced treating effect of the present invention to be described, but scope of the presently claimed invention is not limited only to this.
Embodiment 1
Processing certain coal gasification waste water with the crushed coal pressure gasifying advanced waste treatment system of the present invention, treating capacity is 1.0m3/ h, temperature is 30 DEG C；First level filtering device adopts sand filtration；Device for catalyzing and oxidating ozone ozone dosage is 160mg ozone/L waste water, and hydraulic detention time is 40min；One-level BAF hydraulic detention time is 4h, adopts air compressor machine aeration, and gas-water ratio is 6；Two-stage filter adopts sand filtration；UV/ozone reaction unit ozone dosage is 100mg ozone/L waste water, and hydraulic detention time is 40min, and UV power is 1.68kW；Two grades of BAF hydraulic detention times are 2h, adopt air compressor machine aeration, and gas-water ratio is 2.Pending water COD is 302mg/L, and after catalytic ozonation processes, COD reduces to 118mg/L, and after one-level BAF processes, COD reduces to 94mg/L, and after UV/ozone oxidation, COD reduces to 51mg/L, and after two grades of BAF process, COD reduces to 44mg/L.
Embodiment 2
Processing certain coal gasification waste water with the crushed coal pressure gasifying advanced waste treatment system of the present invention, treating capacity is 1m3/ h, temperature is 25 DEG C；First level filtering device adopts sand filtration；Device for catalyzing and oxidating ozone ozone dosage is 140mg ozone/L waste water, and hydraulic detention time is 1h；One-level BAF hydraulic detention time is 3h, adopts air compressor machine aeration, and gas-water ratio is 5；Two-stage filter adopts sand filtration；UV/ozone reaction unit ozone dosage is 120mg ozone/L waste water, and hydraulic detention time is 1h, and UV power is 1.96kW；Two grades of BAF hydraulic detention times are 3h, adopt air compressor machine aeration, and gas-water ratio is 2.5.Pending water COD is 290mg/L, and after catalytic ozonation processes, COD reduces to 132mg/L, and after one-level BAF processes, COD reduces to 104mg/L, and after UV/ozone oxidation, COD reduces to 61mg/L, and after two grades of BAF process, COD reduces to 48mg/L.
The advanced treatment system of the present invention contains hardly degraded organic substance for crushed coal pressure gasifying waste water after biochemical treatment in water, the feature of biodegradability difference, take full advantage of catalytic ozonation and UV/ozone produces high concentration hydroxyl radical free radical, can without the feature of selective oxidation hardly degraded organic substance, adopt catalytic ozonation as one-level chemical oxidation unit, remove hardly degraded organic substance and improve wastewater biodegradability；Adopting BAF as biochemical treatment unit, microorganism is enriched with on filler, the dioxygen oxidation Organic substance in available ozone oxidation water outlet, reduces aeration rate；According to one-level chemistry and the feature that biochemical treatment water outlet pollutant levels are low, colourity is low, light transmission is good, adopt UV/ozone as secondary chemical oxidation unit, the hydroxyl radical free radical produced by photodissociation and system improves wastewater biodegradability again, thus removing the Organic substance of oxidized rear bio-degradable in water by BAF further.Two-stage oxidation adds that biochemical treatment ozone dosage is low, aeration rate is low, high treating effect, operating cost are low, simple to operate.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope of present disclosure; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (9)
1. the advanced treatment system of a crushed coal pressure gasifying waste water, it is characterised in that including:
Single filter elevator pump, first level filtering device, catalytic ozonation reaction unit, 1# cushion water pot, one-level BAF elevator pump, one-level BAF system, 2# buffering water pot, cascade filtration elevator pump, two-stage filter, UV/ozone reaction unit, 3# buffering water pot, two grades of BAF elevator pumps, two grades of BAF systems and product water pot；Wherein,
Described single filter elevator pump is provided with water inlet pipe, and the water side of described single filter elevator pump and first level filtering device, catalytic ozonation reaction unit, 1# cushion water pot, one-level BAF elevator pump, one-level BAF system, 2# cushions water pot, cascade filtration elevator pump, two-stage filter, UV/ozone reaction unit, 3# cushions water pot, two grades of BAF elevator pumps, two grades of BAF systems, product water pots are sequentially connected with；
Described product water pot is provided with the outlet pipe of water outlet after discharge processes.
2. the advanced treatment system of a kind of crushed coal pressure gasifying waste water according to claim 1, it is characterised in that described catalytic ozonation reaction unit includes:
Catalytic ozonation reactor and ozonator, wherein said catalytic ozonation reactor inner bottom part is provided with water distribution system and gas distribution system, and middle part is filled with ozone catalyst, top is provided with collecting system；Described ozonator is oxygen source ozone generator, and this ozonator is connected with the gas distribution system in described catalytic ozonation reactor.
3. the advanced treatment system of a kind of crushed coal pressure gasifying waste water according to claim 1, it is characterised in that described one-level BAF system includes:
BAF, is provided with water distribution system and gas distribution system, and is filled with haydite and/or absorbent charcoal carrier in it；
Described water distribution system is connected with the water pipe of this BAF；
Backwashing pump, is connected with this BAF through water lines；
Blower fan, is connected with the gas distribution system in this BAF through gas piping；
Described two grades of BAF systems all include:
BAF, is provided with water distribution system and gas distribution system, and is filled with haydite and absorbent charcoal carrier in it；
Described water distribution system is connected with the water pipe of this BAF；
Backwashing pump, is connected with this BAF through water lines；
Blower fan, is connected with the gas distribution system in this BAF through gas piping.
4. the advanced treatment system of a kind of crushed coal pressure gasifying waste water according to any one of claims 1 to 3, it is characterised in that described UV/ozone reaction unit includes:
Ultraviolet and ozone reactor, ultraviolet control module and ozonator；
It is provided with in described ultraviolet and ozone reactor: water distribution system, gas distribution system and the ultraviolet lamp tube being evenly arranged；
Described ultraviolet lamp tube controls module with described ultraviolet and is connected；
Described gas distribution system is connected with described ozonator.
5. the advanced treatment system of a kind of crushed coal pressure gasifying waste water according to any one of claims 1 to 3, it is characterised in that described first level filtering device and two-stage filter all adopt any one in more medium filter, sand filtration filter, fabric filter.
6. the advanced treatment system of a kind of crushed coal pressure gasifying waste water according to any one of claims 1 to 3, it is characterised in that described catalytic ozonation reaction unit shares an ozonator with UV/ozone reaction unit.
7. the deep treatment method of a crushed coal pressure gasifying waste water, it is characterised in that adopt the advanced treatment system described in any one of claim 1 to 6, comprise the following steps:
Pending crushed coal pressure gasifying wastewater biochemical water outlet enters described advanced treatment system after coagulating treatment, sequentially enters the first level filtering device of this advanced treatment system, catalytic ozonation reaction unit, one-level BAF system, two-stage filter, UV/ozone reaction unit, two grades of BAF systems process；Wherein, in described catalytic ozonation reaction unit and UV/ozone reaction unit, pass into ozone gas respectively and carry out oxidation reaction；In described one-level BAF system and two grades of BAF systems, pass into air respectively and carry out biochemical reaction；Arrange outside water outlet up to standard after process.
8. the deep treatment method of a kind of crushed coal pressure gasifying waste water according to claim 7, it is characterised in that in described method,
The ozone dosage passed in described catalytic ozonation reaction unit is 30～150mg ozone/L waste water, and passing into ozone gas in described catalytic ozonation reaction unit, to carry out the hydraulic detention time of oxidation reaction be 10～90 minutes；
The ozone dosage passed in described UV/ozone reaction unit is 30～150mg ozone/L waste water, and the uviol lamp power of described UV/ozone reaction unit is 0.5～3kW/m3Waste water, passes into ozone gas and opens uviol lamp to carry out the hydraulic detention time of oxidation reaction be 10～90 minutes in described UV/ozone reaction unit.
9. the deep treatment method of a kind of crushed coal pressure gasifying waste water according to claim 7 or 8, it is characterised in that in described method,
The volume ratio 0.5～10 of the air passed in described one-level BAF system and water inlet, passing into air in described one-level BAF system, to carry out the hydraulic detention time of biochemical reaction be 1～4 hour；
The volume ratio of the air passed in described two grades of BAF systems and water inlet is 0.5～5, and passing into air in described two grades of BAF systems, to carry out the hydraulic detention time of biochemical reaction be 1～4 hour.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365388A (en) * | 2016-11-08 | 2017-02-01 | 吴国霞 | High-salinity organic sewage treatment system based on high-grade oxidizing |
| CN106673302A (en) * | 2016-12-16 | 2017-05-17 | 北京桑德环境工程有限公司 | Advanced wastewater treatment system for leather industry park |
| CN107010782A (en) * | 2017-04-13 | 2017-08-04 | 北京中科康仑环境科技研究院有限公司 | It is a kind of at the same remove industrial park waste water in hardly degraded organic substance, total cyanogen and total nitrogen method |
| CN107777803A (en) * | 2016-08-25 | 2018-03-09 | 中煤鄂尔多斯能源化工有限公司 | The processing system and handling process of a kind of Technique of Coal Mine Drainage |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863589A (en) * | 2010-06-09 | 2010-10-20 | 中国海洋石油总公司 | Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter |
| CN104355358A (en) * | 2014-09-01 | 2015-02-18 | 天津未来生物技术发展有限公司 | Ozone-assisted photocatalytic sterilization device |
| CN204342612U (en) * | 2014-12-10 | 2015-05-20 | 世纪华扬环境工程有限公司 | For the sewage water advanced treatment apparatus of petrochemical industry |
| CN104817167A (en) * | 2015-04-13 | 2015-08-05 | 安徽华骐环保科技股份有限公司 | Water-level descending backwashing method for up-flow biological aerated filter |
-
2016
- 2016-04-20 CN CN201610248278.XA patent/CN105776760B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863589A (en) * | 2010-06-09 | 2010-10-20 | 中国海洋石油总公司 | Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter |
| CN104355358A (en) * | 2014-09-01 | 2015-02-18 | 天津未来生物技术发展有限公司 | Ozone-assisted photocatalytic sterilization device |
| CN204342612U (en) * | 2014-12-10 | 2015-05-20 | 世纪华扬环境工程有限公司 | For the sewage water advanced treatment apparatus of petrochemical industry |
| CN104817167A (en) * | 2015-04-13 | 2015-08-05 | 安徽华骐环保科技股份有限公司 | Water-level descending backwashing method for up-flow biological aerated filter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107777803A (en) * | 2016-08-25 | 2018-03-09 | 中煤鄂尔多斯能源化工有限公司 | The processing system and handling process of a kind of Technique of Coal Mine Drainage |
| CN107777803B (en) * | 2016-08-25 | 2021-04-02 | 中煤鄂尔多斯能源化工有限公司 | Coal mine water treatment system and treatment process |
| CN106365388A (en) * | 2016-11-08 | 2017-02-01 | 吴国霞 | High-salinity organic sewage treatment system based on high-grade oxidizing |
| CN106673302A (en) * | 2016-12-16 | 2017-05-17 | 北京桑德环境工程有限公司 | Advanced wastewater treatment system for leather industry park |
| CN107010782A (en) * | 2017-04-13 | 2017-08-04 | 北京中科康仑环境科技研究院有限公司 | It is a kind of at the same remove industrial park waste water in hardly degraded organic substance, total cyanogen and total nitrogen method |
| CN109574330A (en) * | 2019-02-01 | 2019-04-05 | 田野 | A kind of removable purifying domestic sewage processing system of integration and treatment process |
| CN112125476A (en) * | 2020-09-25 | 2020-12-25 | 中蓝连海设计研究院有限公司 | Two-stage ozone oxidation-biological contact coupling sewage advanced treatment method and device |
| CN114315012A (en) * | 2021-12-07 | 2022-04-12 | 清华大学 | Excrement wastewater treatment system and method applied to scenic spot |
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|---|---|
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