CN108947069A - System and method based on micro passage reaction continuous processing organic wastewater - Google Patents
System and method based on micro passage reaction continuous processing organic wastewater Download PDFInfo
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- CN108947069A CN108947069A CN201810882196.XA CN201810882196A CN108947069A CN 108947069 A CN108947069 A CN 108947069A CN 201810882196 A CN201810882196 A CN 201810882196A CN 108947069 A CN108947069 A CN 108947069A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 108
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000007800 oxidant agent Substances 0.000 claims abstract description 42
- 230000001590 oxidative effect Effects 0.000 claims abstract description 31
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000009279 wet oxidation reaction Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000002699 waste material Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000010786 composite waste Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 abstract description 28
- 239000001301 oxygen Substances 0.000 abstract description 28
- 239000003054 catalyst Substances 0.000 abstract description 8
- 238000004065 wastewater treatment Methods 0.000 abstract description 6
- 239000000945 filler Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 21
- 239000007789 gas Substances 0.000 description 19
- 230000008569 process Effects 0.000 description 13
- 101150006257 rig-4 gene Proteins 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000010815 organic waste Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000010812 mixed waste Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 231100000171 higher toxicity Toxicity 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses the system and methods based on micro passage reaction continuous processing organic wastewater, including oxidant holding vessel, storage of waste water tank, pretreatment unit, heat-exchanger rig and oxidant preheating device, the pretreatment unit includes coarse filter, homogeneous tank, high-pressure metering pump and cross exchanger, the storage of waste water tank is connected to the coarse filter, and the coarse filter is connected to the homogeneous tank.Beneficial effect is: it is without secondary pollution without using catalyst, it is more environmentally-friendly, may be implemented moment uniformly mixes, strengthening wet oxidation carries out wastewater treatment, so that oxygen and waste water is come into full contact with enhanced oxidation waste water if filler is added in micro passage reaction simultaneously, improve oxidation effectiveness.
Description
Technical field
The present invention relates to field of waste water treatment, are more particularly to based on micro passage reaction continuous processing organic wastewater
System and method.
Background technique
In recent years, with industrialized swift and violent development, the environmental pollution of generation is also got worse, and water pollution is especially prominent
Out.In China, water pollution is mainly derived from intractable industrial wastewater, especially the row such as machining, petroleum, chemical industry, pesticide
The waste water of industry, these waste water have the characteristics that pollutant concentration height, complicated component, toxicity is big, biological degradability is poor, traditional dirt
Water treatment technology is by serious challenge.Wet oxidation process is a kind of high concentration oxidation processes work proposed the fifties in last century
Skill receives section of various countries since the technique shows fabulous characteristic during handling high concentration, poisonous and harmful organic wastewater
The concern of scholar.Wet-type oxidation technology is under conditions of high temperature and pressure
The treatment process of small organic molecule, inorganic matter, carbon dioxide and water.Catalytic wet is developed on the basis of wet oxidation process
Oxidizing process, catalytic wet air oxidation are that organic used water difficult to degradate is aoxidized using catalyst, to solve traditional wet oxidation
Reaction condition high temperature and pressure existing for technology, the problems such as reaction time is longer.
Currently, Wet Oxidation Process is used in autoclave or tower in actual industrial substantially as reaction vessel, it is most
It is the reaction of batch sequence, there are a series of problems such as oxygen and waste water mixing efficiency are low in application, causes a large amount of waste of oxygen,
And oxidation efficiency is low, the reaction time is long, and oxidization time is generally in 1-2h；Safety is poor, and traditional equipment implements wet oxidation process
It is that interval carries out, some intermediate states may have higher toxicity in oxidation process；Reaction vessel volume is big, needs larger
Occupied area, one-time investment is higher, is unfavorable for project implementation etc..There is also a series of problems such as to urge for catalytic wet air oxidation
Agent stability is poor, due to complicated component in waste water, so that the easy poisoning and deactivation of catalyst；Operating cost is high, for resource maximum
Change and utilize, catalyst needs to be recycled just need to run a period of time after will be activated, and in use can be molten
Partial catalyst out, this all causes waste, so that operating cost is high；The dissolution of catalyst bring secondary pollution this to waste water at
The meaning of reason produces influence etc.；The separation of catalyst and waste water is relatively difficult.
Summary of the invention
The object of the invention is that provide organic based on micro passage reaction continuous processing to solve the above-mentioned problems
The system and method for waste water.
The present invention through the following technical solutions to achieve the above objectives:
Based on the system of micro passage reaction continuous processing organic wastewater, including it is oxidant holding vessel, storage of waste water tank, pre-
Processing unit, heat-exchanger rig and oxidant preheating device, the pretreatment unit include coarse filter, homogeneous tank, high pressure measurement
Pump and cross exchanger, the storage of waste water tank are connected to the coarse filter, and the coarse filter is connected to the homogeneous tank,
The homogeneous tank is connected to the accurate filter by the high-pressure metering pump, and the accurate filter is connected to the heat exchange
Device, the heat-exchanger rig are connected respectively to waste water micro-channel heat exchanger and counterbalance valve, and the oxidant holding vessel is connected to institute
The check valve in oxidant preheating device is stated, the check valve is connected to pressure reducing valve, and it is micro- logical that the pressure reducing valve is connected to oxidant
Road heat exchanger, the oxidizer microchannel heat exchanger and the waste water micro-channel heat exchanger are connected to micro-channel mixer, described
Micro-channel mixer is connected to micro passage reaction, and the micro passage reaction is connected to the heat-exchanger rig, the counterbalance valve
It is connected to knockout drum, the knockout drum is connected to tail gas absorption tank, the counterbalance valve, the knockout drum and institute
It states tail gas absorption tank and constitutes gas-liquid separation device, the waste water micro-channel heat exchanger is also connected with electric heater, and the electricity adds
Hot device and the waste water micro-channel heat exchanger constitute waste water preheating device.
In order to be based further on micro passage reaction continuous processing organic wastewater system service performance, heat exchange dress
It is set to cross exchanger.
In order to be based further on micro passage reaction continuous processing organic wastewater system service performance, the electric heating
Device is additionally attached on the oxidizer microchannel heat exchanger, the micro-channel mixer and the micro passage reaction.
In above system, the method based on micro passage reaction continuous processing organic wastewater is as follows:
System pressure: being raised to using the counterbalance valve and need pressure by step 1, by organic wastewater to be processed from described
It is imported in storage of waste water tank；
Step 2: a kind of organic wastewater of importing of step is miscellaneous through the coarse filter removing suspended matter and particulate matter etc.
Matter, residual waste solution enters the homogeneous tank and adjusts waste liquid pH value, then is pumped into the accurate filter, mistake through the high-pressure metering pump
Filter obtains pretreated organic wastewater；
Step 3: pretreated organic wastewater will be completed in step 2 and carries out heat exchange in the heat-exchanger rig, then
Preliminarily heated organic wastewater enters the waste water micro-channel heat exchanger and continues the organic wastewater for heating, being preheated；
Step 4: the oxidant in the oxidant holding vessel is entered into the oxygen through the check valve, the pressure reducing valve
It is heated in agent micro-channel heat exchanger, the oxidant preheated；
Step 5: the oxidant preheated in the organic wastewater preheated in step 3 and step 4 is mixed in the microchannel
Strengthen quickly mixing in device, obtain mixed liquor, mixed liquor enters the micro passage reaction and carries out wet oxidation, and completion aoxidizes
To gas-liquid mixed waste water；
Step 6: carrying out heat exchange by pretreated organic wastewater for the waste water of step 5 gas-liquid mixed and step 3,
It carries out entering counterbalance valve decompression after tentatively cooling down, further cool down through the knockout drum, separate tail gas, tail gas enters
The tail gas absorption tank, liquid flow out to obtain the further biochemical treatment for the treatment of fluid or through the qualified directly row of detection from water outlet
It puts.
In the present embodiment, the pH value in step 2 is 4-10.
The beneficial effects of the present invention are: micro passage reaction is closed system, can avoid contact with wastewater treatment process
The high toxicity gas or liquid substance of middle intermediate, improve the safety of wastewater treatment process, are added in micro passage reaction
Filler realizes enhanced oxidation, guarantees that gas-liquid is remained in the stage of reaction and is sufficiently mixed, more preferably, filler can be straight for oxidation effectiveness
Realization and the separation of waste water are connect, oxidization time shortens several times (foreshortening to 20min from 1-2h) compared with traditional wet oxidation, realizes
Continuous and steady operation carries out wastewater treatment, and effluent characteristics are good, without secondary pollution without using catalyst, more environmentally-friendly, Ke Yishi
Existing moment uniformly mixes, and strengthening wet oxidation carries out wastewater treatment, more can if filler is added in micro passage reaction simultaneously
So that oxygen and waste water is come into full contact with enhanced oxidation waste water, improve oxidation effectiveness, COD removal rate can reach 95% or more, drop from hardly possible
Solution realizes biochemical degradable or direct emission.
Detailed description of the invention
Fig. 1 is that the present invention is based on the system flow charts of the system and method for micro passage reaction continuous processing organic wastewater；
Fig. 2 is that the present invention is based on the signals of the system structure of the system and method for micro passage reaction continuous processing organic wastewater
Figure.
The reference numerals are as follows:
1, oxidant holding vessel；2, storage of waste water tank；3, pretreatment unit, 301, coarse filter, 302, homogeneous tank, 303,
High-pressure metering pump, 304, accurate filter；4, heat-exchanger rig；5, oxidant preheating device, 501, check valve, 502, pressure reducing valve,
503, oxidizer microchannel heat exchanger；6, waste water preheating device, 601, electric heater, 602, waste water micro-channel heat exchanger；7, micro-
Channel mixer；8, micro passage reaction；9, gas-liquid separation device, 901, counterbalance valve, 902, knockout drum, 903, tail gas suction
Closed cans.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As Figure 1-Figure 2, the system based on micro passage reaction continuous processing organic wastewater, including oxidant holding vessel
1, storage of waste water tank 2, pretreatment unit 3, heat-exchanger rig 4 and oxidant preheating device 5, pretreatment unit 3 include coarse filter
301, homogeneous tank 302, high-pressure metering pump 303 and cross exchanger 304, storage of waste water tank 2 are connected to coarse filter 301, thick mistake
Filter 301 is connected to homogeneous tank 302, and homogeneous tank 302 is connected to accurate filter 304, secondary filter by high-pressure metering pump 303
Device 304 is connected to heat-exchanger rig 4, and heat-exchanger rig 4 is connected respectively to waste water micro-channel heat exchanger 602 and counterbalance valve 901, oxidant
Holding vessel 1 is connected to the check valve 501 in oxidant preheating device 5, and check valve 501 is connected to pressure reducing valve 502, pressure reducing valve 502
It is connected to oxidizer microchannel heat exchanger 503, oxidizer microchannel heat exchanger 503 and waste water micro-channel heat exchanger 602 are connected to
Micro-channel mixer 7, micro-channel mixer 7 are connected to micro passage reaction 8, and micro passage reaction 8 is connected to heat-exchanger rig 4,
Counterbalance valve 901 is connected to knockout drum 902, and knockout drum 902 is connected to tail gas absorption tank 903, counterbalance valve 901, gas-liquid
Knockout drum 902 and tail gas absorption tank 903 constitute gas-liquid separation device, and waste water micro-channel heat exchanger 602 is also connected with electric heating
Device 601, electric heater 601 and waste water micro-channel heat exchanger 602 constitute waste water preheating device 6.
In order to be based further on micro passage reaction continuous processing organic wastewater system service performance, heat-exchanger rig 4
For cross exchanger.
In order to be based further on micro passage reaction continuous processing organic wastewater system service performance, electric heater
601 are additionally attached on oxidizer microchannel heat exchanger 503, micro-channel mixer 7 and micro passage reaction 8.
The method based on micro passage reaction continuous processing organic wastewater is illustrated in conjunction with the embodiments as follows:
Embodiment one
Step 1: the used cutting liquid for selecting certain production tire enterprise to generate in steel wire pull line production process, the useless cutting
Liquid raw water COD is 1.2 × 105mg/L, and raw water is atropurpureus, and system pressure is raised to 4.5MPa using counterbalance valve 901, is cut useless
Liquid is cut to import from storage of waste water tank 2；
Step 2: through the impurity such as 301 oil removal of coarse filter and particulate matter, it is uniform that residual waste solution enters homogeneous tank 302
Stirring and adjusting waste liquor PH is pumped into accurate filter 304 to 6, then through high-pressure metering pump 303, and pretreated useless cutting is obtained by filtration
Liquid；
Step 3: it completes pretreated used cutting liquid heat-exchanger rig 4 and carries out heat exchange, then preliminarily heated used cutting liquid
Continue the used cutting liquid for being heated to 250 DEG C, being preheated into waste water micro-channel heat exchanger 602；
Step 4: oxygen enters oxygen micro-channel heat exchanger through check valve 501, pressure reducing valve 502 from oxidant holding vessel 1
250 DEG C are heated in 503, the oxygen preheated；
Step 5: the used cutting liquid of preheating is mixed in micro-channel mixer 7 with oxygen, and oxygen flow is the same time
It is 1.5 times into chemical oxygen demand of waste water, obtains mixed liquor, mixed liquor enters micro passage reaction 8 in 250 DEG C of progress wet type oxygen
Change, reaction 40min completes oxidation and obtains gas-liquid mixed used cutting liquid；
Step 6: the used cutting liquid of gas-liquid mixed carries out heat exchange in heat-exchanger rig 4 with by pretreated used cutting liquid,
Depressurized after tentatively cooling down through counterbalance valve BPV-01, cools to room temperature through knockout drum V-04 and separate tail gas, tail gas enters
Tourie V-05, liquid are flowed out from water outlet, are discharged as greenish transparent liquid, are discharged COD=1800mg/L, BOD through detection
=678mg/L, COD degradation rate are 98.5%, are discharged B/C=0.38, belong to biodegradable waste.
Embodiment two
Step 1: the used cutting liquid for selecting certain production Automobile Parts Industry to generate in process of production, the used cutting liquid
Raw water COD is 1.6 × 105mg/L, and raw water is milky, after the completion of equipment debugging, is raised to system pressure using counterbalance valve 901
6MPa imports used cutting liquid from storage of waste water tank 2；
Step 2: through the impurity such as 301 oil removal of coarse filter and particulate matter, it is uniform that residual waste solution enters homogeneous tank 302
Stirring and adjusting waste liquor PH is pumped into accurate filter 304 to 8, then through high-pressure metering pump 303, and pretreated useless cutting is obtained by filtration
Liquid；
Step 3: pretreated used cutting liquid is completed in heat-exchanger rig 4 and carries out heat exchange, then preliminarily heated useless cutting
Liquid, which enters waste water micro-channel heat exchanger 602, to be continued to be heated to 270 DEG C, the used cutting liquid preheated；
Step 4: oxygen enters oxidizer microchannel heat exchanger through check valve 501, pressure reducing valve 502 from oxidant holding vessel 1
270 DEG C are heated in 503, the oxygen preheated；
Step 5: the used cutting liquid of preheating is mixed in micro-channel mixer 7 with oxygen, and oxygen flow is the same time
It is 2 times into chemical oxygen demand of waste water, obtains mixed liquor, mixed liquor enters micro passage reaction 8 in 270 DEG C of progress wet type oxygen
Change, reaction 40min completes oxidation and obtains gas-liquid mixed used cutting liquid.
Step 6: the used cutting liquid of gas-liquid mixed carries out heat exchange in heat-exchanger rig 4 with by pretreated used cutting liquid,
Depressurized after tentatively cooling down through counterbalance valve 901, cools to room temperature through knockout drum 902, separate tail gas, tail gas enters absorption
Tank 903, liquid are flowed out from water outlet, are discharged as light yellow transparent liquid.
In the present embodiment, it being discharged COD=2520mg/L, BOD=1270mg/L through detection, COD degradation rate is 98.3%,
It is discharged B/C=0.50, belongs to biodegradable waste.
Embodiment three
Step 1: the waste water for selecting certain production dyestuff intermediate enterprise to generate in process of production, waste water raw water COD are
3.4 × 104mg/L, raw water are bronzing, after the completion of equipment debugging, system pressure are raised to 9MPa using counterbalance valve 901, will be given up
Water is imported from storage of waste water tank 2；
Step 2: through the impurity such as 301 oil removal of coarse filter and particulate matter, it is uniform that residual waste solution enters homogeneous tank 302
Stirring and adjusting waste liquor PH is pumped into accurate filter 304 to 7, then through high-pressure metering pump 303, and pretreated waste water is obtained by filtration；
Step 3: pretreated waste water is completed in heat-exchanger rig 4 and carries out heat exchange, then preliminarily heated waste water enters useless
Water micro-channel heat exchanger 602 continues to be heated to 300 DEG C, the waste water preheated；
Step 4: oxygen enters oxidizer microchannel heat exchanger through check valve 501, pressure reducing valve 502 from oxidant holding vessel 1
300 DEG C are heated in 503, the oxygen preheated；
Step 5: the waste water of preheating is mixed in micro-channel mixer 7 with oxygen, and oxygen flow is to enter with the time
Chemical oxygen demand of waste water is 2 times, obtains mixed liquor；Mixed liquor enters micro passage reaction 8 in 300 DEG C of progress wet oxidations, instead
It answers 20min to complete oxidation and obtains gas-liquid mixed exhausted water；
Step 6: the waste water of gas-liquid mixed carries out heat exchange in heat-exchanger rig 4 with by pretreated waste water, carries out preliminary
It is depressurized after cooling through counterbalance valve 901, cools to room temperature through knockout drum 902, separate tail gas, tail gas enters tail gas absorption tank
903, liquid is flowed out from water outlet, is discharged as light yellow transparent liquid.
In the present embodiment, it is discharged COD=271mg/L through detection, COD degradation rate is 99.2%, can be entered with direct emission
City planting ductwork.
Example IV
Step 1: selecting certain waste water for generating in process of production of production agricultural chemicals enterprise, and which is 5 ×
104mg/L, raw water are brown, and after the completion of equipment debugging, system pressure is raised to 9MPa using counterbalance valve 901, by waste water from useless
Water store tank 2 imports；
Step 2: through the impurity such as 301 oil removal of coarse filter and particulate matter, it is uniform that residual waste solution enters homogeneous tank 302
Stirring and adjusting waste liquor PH is pumped into accurate filter 304 to 8, then through high-pressure metering pump 303, and pretreated waste water is obtained by filtration；
Step 3: pretreated waste water enters heat-exchanger rig 4 and carries out heat exchange, and then preliminarily heated waste water enters waste water
Micro-channel heat exchanger 602 continues to be heated to 300 DEG C, the waste water preheated；
Step 4: oxygen enters oxidizer microchannel heat exchanger through check valve 501, pressure reducing valve 502 from oxidant holding vessel 1
300 DEG C are heated in 503, the oxygen preheated；
Step 5: the waste water of preheating is mixed in micro-channel mixer 7 with oxygen, and oxygen flow is to enter with the time
Chemical oxygen demand of waste water is 1.8 times, obtains mixed liquor；Mixed liquor enters micro passage reaction 8 in 300 DEG C of progress wet oxidations,
Reaction 20min completes oxidation and obtains gas-liquid mixed waste water；
Step 6: the waste water of gas-liquid mixed carries out heat exchange in heat-exchanger rig 4 with by pretreated waste water, carries out preliminary
It being depressurized after cooling through counterbalance valve 901, cools to room temperature through knockout drum 902, separate tail gas, tail gas enters tail gas absorption 903,
Liquid is flowed out from water outlet, is discharged as light yellow transparent liquid.
In the present embodiment, it is discharged COD=948mg/L, BOD=427mg/L through detection, COD degradation rate is 98.1%, out
Water B/C=0.45, belongs to biodegradable waste.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (5)
1. based on the system of micro passage reaction continuous processing organic wastewater, including oxidant holding vessel, storage of waste water tank, pre- place
Manage device, heat-exchanger rig and oxidant preheating device, it is characterised in that: the pretreatment unit include coarse filter, homogeneous tank,
High-pressure metering pump and cross exchanger, the storage of waste water tank are connected to the coarse filter, and the coarse filter is connected to institute
Homogeneous tank is stated, the homogeneous tank is connected to the accurate filter, the accurate filter connection by the high-pressure metering pump
To the heat-exchanger rig, the heat-exchanger rig is connected respectively to waste water micro-channel heat exchanger and counterbalance valve, the oxidant storage
Tank is connected to the check valve in the oxidant preheating device, and the check valve is connected to pressure reducing valve, and the pressure reducing valve is connected to
It is mixed that oxidizer microchannel heat exchanger, the oxidizer microchannel heat exchanger and the waste water micro-channel heat exchanger are connected to microchannel
Clutch, the micro-channel mixer are connected to micro passage reaction, and the micro passage reaction is connected to the heat-exchanger rig, institute
It states counterbalance valve and is connected to knockout drum, the knockout drum is connected to tail gas absorption tank, the counterbalance valve, the gas-liquid point
Gas-liquid separation device is constituted from tank and the tail gas absorption tank, the waste water micro-channel heat exchanger is also connected with electric heater,
The electric heater and the waste water micro-channel heat exchanger constitute waste water preheating device.
2. the system according to claim 1 based on micro passage reaction continuous processing organic wastewater, it is characterised in that: institute
Stating heat-exchanger rig is cross exchanger.
3. the system according to claim 1 based on micro passage reaction continuous processing organic wastewater, it is characterised in that: institute
It states electric heater and is additionally attached to the oxidizer microchannel heat exchanger, the micro-channel mixer and the micro passage reaction
On.
4. the method according to claim 3 based on micro passage reaction continuous processing organic wastewater, it is characterised in that: packet
Include following steps:
System pressure: being raised to using the counterbalance valve and need pressure by step 1, by organic wastewater to be processed from the waste water
It is imported in holding vessel；
Step 2: a kind of organic wastewater of importing of step is removed into the impurity such as suspended matter and particulate matter through the coarse filter, is remained
Waste liquid enters the homogeneous tank and adjusts waste liquid pH value, then is pumped into the accurate filter through the high-pressure metering pump, filters
To pretreated organic wastewater；
Step 3: pretreated organic wastewater will be completed in step 2 and carries out heat exchange in the heat-exchanger rig, then tentatively
The organic wastewater of heating enters the waste water micro-channel heat exchanger and continues the organic wastewater for heating, being preheated；
Step 4: the oxidant in the oxidant holding vessel is entered into the oxidant through the check valve, the pressure reducing valve
It is heated in micro-channel heat exchanger, the oxidant preheated；
Step 5: by the organic wastewater preheated in step 3 and the oxidant preheated in step 4 in the micro-channel mixer
Strengthen quickly mixing, obtain mixed liquor, mixed liquor enters the micro passage reaction and carries out wet oxidation, completes oxidation and obtains gas
Liquid composite waste；
Step 6: the waste water of step 5 gas-liquid mixed and step 3 are subjected to heat exchange by pretreated organic wastewater, carried out
Enter the counterbalance valve after preliminary cooling to depressurize, further cool down through the knockout drum, separate tail gas, described in tail gas enters
Tail gas absorption tank, liquid flow out to obtain the further biochemical treatment for the treatment of fluid or are detected qualified direct emission from water outlet.
5. the method according to claim 4 based on micro passage reaction continuous processing organic wastewater, it is characterised in that: step
PH value in rapid two is 4-10.
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