CN208327741U - High-concentration organic wastewater treatment system - Google Patents
High-concentration organic wastewater treatment system Download PDFInfo
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- CN208327741U CN208327741U CN201820675880.6U CN201820675880U CN208327741U CN 208327741 U CN208327741 U CN 208327741U CN 201820675880 U CN201820675880 U CN 201820675880U CN 208327741 U CN208327741 U CN 208327741U
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Abstract
The utility model discloses a kind of high-concentration organic wastewater treatment systems, including conditioning tank, continous way hydrothermal oxidization system, anaerobic reaction system, aerobic reaction system and the activated carbon adsorption system being sequentially communicated by liquid line；Wherein, activated carbon adsorption system is sequentially communicated aerobic reaction system, intermittent wet oxidation system and washing active carbon system further through solid pipeline, forms active carbon circular treatment circuit；The water part of the activated carbon adsorption system is expelled directly out, and part imports washing active carbon system as slurry；The liquid that the washing active carbon system and intermittent wet oxidation system generate by fluid pipeline is introduced directly into conditioning tank after collecting.After whole system is improved, the COD removal rate of waste water is greater than 99.8%；It can effectively realize that the processing of high concentrated organic wastewater, partially recycled, disposition and intermediate product the utilization of catalyst have ensured that system safely dispose by water outlet and stablizing for sludge.
Description
Technical field
The utility model relates to wastewater processing technologies, and in particular to a kind of high-concentration organic wastewater treatment system.
Background technique
High concentrated organic wastewater generally refer to the discharge of the industries such as food, papermaking, pesticide containing higher concentration organic matter
The COD content of waste water, usual waste water reaches 2000mg/L or more.These high concentrated organic wastewaters usually contain a large amount of carbon hydrate
Object, fat, fiber etc., even with stronger bio-toxicity in some high concentrated organic wastewaters, if these waste water cannot get
Appropriate processing, easily does great damage to ecological environment, threatens human health.
Wet air oxidation technology (Wet Air Oxidation, WAO) is one kind effectively place proposed the 1950s
Manage high concentration, toxic, harmful waste water hydrothermal oxidization technique.The technique be high temperature (125~350 DEG C), high pressure (0.5~
Under conditions of 20MPa), converted the organic matter in waste water to using air or oxygen (or the oxidants such as hydrogen peroxide, ozone)
H2O、CO2And other small organic molecules.Wet-type oxidation technology is with process range is wide, removal rate is high, is not likely to produce NOxAnd two
The advantages such as English are disliked, and wet oxidation belongs to exothermic reaction, the heat that reaction process generates can be effectively reduced energy consumption.However,
Hydrothermal oxidization process is usually unable to completely remove the organic matter in waste water, and the removal rate for usually improving waste water COD needs
Catalyst is added into wet oxidation system.Due to heterogeneous catalysis in wet oxidation process easily occur be lost and it is hardened
The problems such as, add homogeneous catalyst usually during wet oxidation practical application in industry at present to improve the processing of waste water effect
Rate, but rarely have and homogeneous catalyst is effectively treated, potential threat easily is generated to receiving water body.
Active carbon has stronger absorption universality and adsorption capacity, is usually used in adsorbing in waste water in water treatment procedure
Low concentration substance.But if the active carbon of adsorption saturation not can be carried out recovery processing, not only increase the investment of cleaning action charcoal at
This, also results in the serious wasting of resources, while being likely to cause secondary pollution.At present to the research master of active carbon processing waste water
Powdered Activated Carbon is concentrated on, the separation of later period charcoal water is relatively complicated.
Utility model content
Purpose of utility model: in view of the foregoing defects the prior art has, this application provides one kind can reduce catalyst
Pollution, environmentally protective, high treating effect high-concentration organic wastewater treatment system.
Technical solution: a kind of high-concentration organic wastewater treatment system described herein, including successively by liquid line
Conditioning tank, continous way hydrothermal oxidization system, anaerobic reaction system, aerobic reaction system and the activated carbon adsorption system of connection；Its
In, activated carbon adsorption system is sequentially communicated aerobic reaction system, intermittent wet oxidation system and activity further through solid pipeline
Charcoal washing system forms active carbon circular treatment circuit；The water part of the activated carbon adsorption system is expelled directly out, and is partially led
Enter washing active carbon system as slurry；The liquid that the washing active carbon system and intermittent wet oxidation system generate
Conditioning tank is introduced directly by fluid pipeline after collecting.
Further, the outlet of regulating reservoir is connected to continous way hydrothermal oxidization system entry, the continous way hydro-thermal oxygen
To change system outlet to connect with anaerobic reaction system entry, the anaerobic reaction system outlet is connect with aerobic reaction system entry,
The outlet of the aerobic reaction system liquid is connected with activated carbon adsorption system, the liquid of the activated carbon adsorption system and water outlet
Mouth connection；The solid outlet of the activated carbon adsorption system is connect with the solid phase entrance of aerobic reaction system, the aerobic reaction
The solid-phase outlet of system is connect with the solid phase entrance of intermittent wet oxidation system, the solid phase of the intermittent wet oxidation system
Outlet is connect with the solid phase entrance of washing active carbon system, the solid-phase outlet of the washing active carbon system and activated carbon adsorption system
The solid phase entrance of system connects；The liquid phase that the intermittent wet oxidation system and washing active carbon system generate is direct by pipeline
Import conditioning tank.The gas generated in this system, which can be collected all, imports incinerator progress burning disposal, such as continous way hydro-thermal
Oxidative system, anaerobic reaction system and aerobic reaction system are correspondingly provided with corresponding exhaust outlet.
When above system is run, the saturated activity charcoal that the activated carbon adsorption system generates is directed into aerobic reaction system
In, the residual activity charcoal of the aerobic reaction system discharge imports intermittent wet oxidation system regeneration processing, at regeneration
Washing active carbon system is imported after reason, the cleaning action charcoal that the washing active carbon system generates imports activated carbon adsorption system again
Reach and recycles.
Agitating device is equipped in the conditioning tank, for generating intermittent wet oxidation system and washing active carbon system
Combined sewage and untreated effluent be sufficiently mixed uniformly, then import continous way hydrothermal oxidization system and reacted.
It is in series with doser and blender on pipeline between the conditioning tank and continous way hydrothermal oxidization system, for throwing
Add catalyst and stirring.
Preferably, it is additionally provided with one in the reaction zone of the anaerobic reaction system and is connected to anaerobic reaction system feeding mouth
Pipeline is in series with water pump on the pipeline, for anaerobic reaction system to be stablized to mixture extraction and continous way water in reaction
Anaerobic reaction system is imported again after the water outlet mixing of thermal oxide system.
Further, batch agitator is equipped in the anaerobic reaction system.
Further, the anaerobic reaction system is up-flow anaerobic sludge blanket；The aerobic reaction system is aeration life
Object filter tank, used in filler be granular activated carbon.
In order to enable system run altogether it is smooth, can on-demand relay pump on pipeline.Such as conditioning tank and continous way hydro-thermal
The sewage for stablizing reaction between oxidative system, in anaerobic reaction system is extracted by water pump to be discharged with continous way hydrothermal oxidization system
Mixing is discharged and takes out with washing active carbon system, the water outlet of washing active carbon system and the water outlet of intermittent wet oxidation system through water pump
To conditioning tank.
A method of high concentrated organic wastewater is handled using above system, comprising the following steps:
(1) continous way hydrothermal oxidization: conditioning tank will be imported after waste water filtering to be processed slagging-off, stirred evenly, adjusting pH is
7-9；It is then introduced into continous way hydrothermal oxidization system, catalyst is added, using pure oxygen as oxidant, reacts 1.5~2.5h；
(2) anaerobic reaction is handled: the product liquid after step (1) reaction being exchanged heat and is cooled down, anaerobic reaction system is then introduced into
System, 30~35 DEG C are reacted 2~4 days；
(3) aerobic reaction is handled: by step (2), treated that water outlet is introduced directly into aerobic reaction system, stops 1-3 days
Afterwards, water outlet is introduced directly into activated carbon adsorption system, is discharged after carrying out Adsorption to residual organic substances and heavy metal catalyst；Its
In, the aerobic reaction system be biological aerated filter, used in filler be granular activated carbon；(4) at active carbon circulation
Reason: the saturated activity charcoal that the processing of activated carbon adsorption system generates is directed into aerobic reaction system, the aerobic reaction system
The residual activity charcoal of discharge imports intermittent wet oxidation system and carries out regeneration treatment, and active carbon is imported after regeneration treatment and is washed
System is washed, the cleaning action charcoal that the washing active carbon system generates imports the utilization of activated carbon adsorption system circulation again, and sludge is residual
Slag is expelled directly out；The water part of the activated carbon adsorption system is expelled directly out, and part imports active carbon after adjusting pH to 8~9
Washing system is used as slurry；The liquid that the washing active carbon system and intermittent wet oxidation system generate leads to after collecting
It crosses fluid pipeline and is introduced directly into conditioning tank.
In step (1), continous way hydrothermal oxidization reaction condition are as follows: coefficient of oxidation 0.9~1.0,280~320 DEG C of temperature, pressure
7~9MPa of power.The continous way wet type oxidation system coefficient of oxidation is 0.9~1.0, and reaction is in anaerobic condition.
In step (1), the catalyst is selected from one or more of copper, iron, manganese, rhodium, ruthenium, palladium, catalyst quality
Concentration maintains 0.1%~0.3%.
In step (1), high purity oxygen gas, oxygen purity > 90% is prepared in situ in the oxygen utilization air separation equipment.
In step (2), the anaerobic reaction system is up-flow anaerobic sludge blanket (UASB), in up-flow anaerobic sludge blanket
Settling zone of the total volume 15%~20%.
In step (2), it is equipped with batch agitator in the anaerobism reflection system, half an hour is divided between stirring, is stirred every time
It mixes 10~15 minutes.
In step (2), anaerobic reaction system is stablized to the mixture extraction and continous way hydrothermal oxidization system in reaction
After water outlet mixing, adjusting acetic acid concentration is 500~1500mg/L, pH is 6.5~7.5, then imports anaerobic reaction system.The step
Sewage mixture in the anaerobic reaction system of stable operation mixes for the sewage mixture rich in food acetic acid and methane producing bacterium
Close the anaerobic bacteria quantity that can be improved in water.
In step (3), 4~8mm of the granular activated carbon partial size, a height of 1.5~2m of layer.
In step (4), the active carbon that the activated carbon adsorption system uses is granular activated carbon, and partial size is 4~8mm.
In step (4), the intermittent wet oxidation reaction system is using hydrogen peroxide and high concentration oxygen as co-oxidation
Agent, coefficient of oxidation are maintained at 1.5~2, and temperature is 260~300 DEG C, and the reaction time is 1.5~2h, and dioxygen water volume fraction exists
10%~15%, regeneration treatment is carried out to active carbon simultaneously using two kinds of advanced oxidation reactions of Fenton's reaction and wet oxidation.
High concentrated organic wastewater is handled using the above method, it is highly concentrated after the continous way hydrothermal oxidization reaction by step (1)
Organic matter in degree organic wastewater, which is oxidized, is decomposed into the small organic molecules such as carbon dioxide, water, acetic acid and carboxylic acid, and these small point
If sub- organic matter is directly entered subsequent aerobic reaction system, the processing pressure of aerobic reactor will be greatly increased, and cannot be real
The recycling of these existing small molecular organic acids；Step (2) by continous way hydrothermal oxidization treated water outlet lead it is anti-into anaerobism
System is answered, the small molecular organic acid that hydrothermal oxidization system generates is used for the nutriment of methane bacteria, while reducing step
(3) processing pressure of aerobic reactor in, waste water middle-molecular-weihydroxyethyl of the Aerobic biological process after anaerobic bio-treated is lesser to be had
Machine object is simultaneously broken down into inorganic matter, then drains into activated carbon adsorption system, is discharged to biological treatment and carries out adsorption treatment, to water outlet
Middle residual organic substances and heavy metal catalyst carry out Adsorption；Finally again via the regenerating active carbon circulatory system of step (4),
The saturated activity charcoal that activated carbon adsorption system generates first imports aerobic reaction system and carries out Aerobic Process for Treatment, and anti-as aerobe
Device additional fillers are answered, intermittent wet oxidation system is then discharged into again and is regenerated, so that partial catalyst returns to after rinsing
Conditioning tank is recycled, and is again introduced into above system and is recycled, and is discharged after other part catalyst is cured with residue,
Prevent pollution of the catalyst to environment.
The utility model has the advantages that the processing system of high-concentration waste water provided by the present application produces following advantage:
(1) method combined using hydrothermal oxidization technique, biological treatment and active carbon absorption technology, can effectively reduce
Remaining organic pollutant, coloration and heavy metal, wastewater COD removal rate >=99.8% in water outlet；
(2) reaction of traditional hydrothermal oxidization rarely has the recycling to catalyst, and this system is realized by activated carbon adsorption
The adsorption recovery and recycling of catalyst, the heavy metal catalyst rate of recovery >=90% can in the case where system run all right
Catalyst usage amount is reduced, reagent cost has been saved, while reducing heavy metal to the pollution risk of storage water body；
(3) traditional hydrothermal oxidization processing exhaustive oxidation difficult to realize to organic matter, high-enriched organics are through hydro-thermal oxygen
Change processing after be often broken up into the small organic molecules such as small carboxylic acid molecules, if these small organic molecules be directly entered it is subsequent good
Oxygen reaction system will greatly increase the processing pressure of aerobic reactor, and can not achieve the recycling of these small molecular organic acids
It utilizes；This system using first by continous way hydrothermal oxidization treated water outlet lead into anaerobic reaction system, by hydrothermal oxidization system
The small molecular organic acid that system generates is used for the nutriment of methane bacteria, while reducing the processing pressure of aerobic reactor；
(4) easily there is active carbon difficulty point mainly for powdery active carbon in conventional hydrothermal oxidation processes activated carbon process
From phenomena such as easily blocking, this system is used for the regeneration of granular activated carbon using intermittent wet oxidation method, effectively increases work
The separation of property charcoal, it is therefore prevented that the blocking of regenerative system；
(5) active carbon of adsorption saturation is back to Aerobic Process for Treatment system by this system first, and the organic matter of absorption is advanced
Row Aerobic Process for Treatment reduces the processing pressure of intermittent wet oxidation reactor, while for active carbon in aerobic reactor
Replacement；
(6) washing active carbon system water is discharged derived from system, is first adjusted pH to alkalinity with sodium hydroxide, is increased cleaning
Ability, while the buck generated is back to pH of the conditioning tank for raw water and adjusts, and has saved the usage amount of medicament, has met green ring
The requirement of guarantor；
(7) excessive mud that system generates is efficiently separated through washing active carbon cleaning systems with active carbon, since sludge passes through
Intermittent wet oxidation system high temperature processing, mud height concentration are crossed, heavy metal solidifies in sludge, realizes and subtract to sludge
Quantization and harmless treatment.
Detailed description of the invention
Fig. 1 is the application high-concentration organic wastewater treatment system schematic diagram.
Specific embodiment
Tthe utility model system is specifically described combined with specific embodiments below.
Embodiment 1
High-concentration organic wastewater treatment system as shown in Figure 1, including be sequentially communicated by liquid line conditioning tank, even
Continuous formula hydrothermal oxidization system, anaerobic reaction system, aerobic reaction system and activated carbon adsorption system；Wherein, activated carbon adsorption system
System is sequentially communicated aerobic reaction system, intermittent wet oxidation system and washing active carbon system further through solid pipeline, is formed
Active carbon circular treatment circuit；The water part of activated carbon adsorption system is expelled directly out, and part imports washing active carbon system and makees
For slurry；The liquid that washing active carbon system and intermittent wet oxidation system generate is direct by fluid pipeline after collecting
Import conditioning tank.Doser and blender are in series on pipeline between conditioning tank and continous way hydrothermal oxidization system；Continous way
Heat exchange cooling device is in series between hydrothermal oxidization system and anaerobic reaction system；Anaerobic reaction system is upflow anaerobic sludge
Bed；Aerobic reaction system be biological aerated filter, used in filler be granular activated carbon.
When using above system, aerobic reaction system liquid-phase outlet is connected with the entrance of activated carbon adsorption system, aerobic
The solid-phase outlet of reaction system directly passes through pipeline and is connected to intermittent wet oxidation system, the outlet part of activated carbon adsorption system
Divide and be expelled directly out, be partially used for the slurry of washing active carbon system, the saturated activity charcoal that activated carbon adsorption system generates is led
Enter into aerobic reaction system, the cleaning action charcoal that washing active carbon system generates imports activated carbon adsorption system, and active carbon is washed
It washs and conditioning tank is routed directly to by pipeline after the liquid that system and intermittent wet oxidation system generate collects.Meanwhile anaerobism is anti-
It answers and is additionally provided with a pipeline for being connected to anaerobic reaction system feeding mouth in the reaction zone of system, for anaerobic reaction system is steady
Mixture extraction in fixed reaction imports anaerobic reaction system after mixing with the water outlet of continous way hydrothermal oxidization system again.
The gas generated in this system be all discharged into atmosphere, such as continous way hydrothermal oxidization system, anaerobic reaction system with
And aerobic reaction system is correspondingly provided with exhaust outlet.It is equipped with agitating device in conditioning tank, is used for intermittent wet oxidation system
The combined sewage and untreated effluent that system and washing active carbon system generate are sufficiently mixed uniformly, then import continous way hydrothermal oxidization
System is reacted.It is in series with doser and blender on pipeline between conditioning tank and continous way hydrothermal oxidization system, is used for
Add catalyst and stirring.Batch agitator is equipped in anaerobic reaction system.Anaerobic reaction system is upflow anaerobic sludge
Bed；The aerobic reaction system be biological aerated filter, used in filler be granular activated carbon.In order to enable system is transported altogether
Row is smooth, can on-demand relay pump on pipeline.
Embodiment 2
Using the method for system described in embodiment 1 processing high concentrated organic wastewater:
Waste water to be processed are as follows: certain chemical industry factory production waste water, pH value 6.63, COD 20800mg/L.
Processing step: waste water to be processed is imported into conditioning tank, adds 30% sodium hydroxide lye according to the actual situation, is adjusted
Saving wastewater pH is 9, is stirred evenly, root in the dosing blender on pipeline between conditioning tank and continous way hydrothermal oxidization system
So that catalyst quality concentration is maintained at 0.1% according to the copper nitrate solution that demand adds 2% concentration, imports continous way hydrothermal oxidization system
System；It is 280 DEG C that continous way hydrothermal oxidization system, which controls reaction temperature, and oxygen is as oxidant, oxygen purity 94%, coefficient of oxidation
0.9, reaction pressure 7MPa, reaction time 1.5h are through continous way hydrothermal oxidization system processed waste water COD conversion ratio
82.1%, water outlet biodegradability is 0.49, pH 7.2；Water outlet is extracted out after heat exchange is cooling with from anaerobic reaction system response
The sewage mixing rich in food acetic acid and methane producing bacterium, adjustings acetic acid is 500mg/L, and pH 7 is discharged into anaerobic reaction system, temperature
It 30 DEG C, stops 2 days；For the water outlet of anaerobic reaction system through pipeline to aerobic reaction system, inside is filled with that partial size is 5mm
Grain active carbon, a height of 1.5m of active carbon layer, the residence time is 1.5 days, through anaerobism+aerobic process processed waste water COD removal rate
Reach 99.8%；Aerobic reaction system is discharged and imports activated carbon adsorption system, active carbon is the seed activity that partial size is 5mm
Charcoal, activated carbon column is 5 meters high, and COD removal rate > 99.9% is discharged after the processing of active carbon filtering technique, and metallic catalyst is remaining
Amount is difficult to detect；The active carbon of adsorption saturation is used to supplement the active carbon of aerobic reaction system conversion, and aerobic reaction system generates
Excess activated charcoal import intermittent wet oxidation system in batches, each batch reactor processing volume is 100L, using double
Oxygen water and oxygen mix oxidation, dioxygen water volume fraction are 12%, and oxygen concentration 94%, reaction temperature is 260 DEG C, when reaction
Between be 2h；Washing system is imported through intermittent wet oxidation system treated mixture, the sodium hydroxide lye for being 8 with pH is clear
Elute attached, regenerating active carbon rate is up to 97%.
Comparative example 1
Comparative example waste water to be processed with embodiment 2, concrete operations and embodiment 2 the difference is that: only connected
Continuous rotating vane type oxidation processes, are handled without biological treatment, activated carbon adsorption and intermittent wet oxidation.Into continous way wet type oxygen
Waste water COD conversion ratio is 82.1% after change, and water outlet biodegradability is 0.49, pH 7.2, is not able to satisfy " integrated wastewater discharge mark
It is quasi- " grade III Standard of GB8978-1996.
Comparative example 2
Comparative example waste water to be processed with embodiment 2, concrete operations and embodiment 2 the difference is that: continous way water
Catalyst is not added in thermal oxide system.Waste water COD conversion ratio is 54.2% after into continous way wet oxidation, after subsequent processing
Being discharged COD conversion ratio is 76.4%, is not able to satisfy the grade III Standard of " integrated wastewater discharge standard " GB8978-1996.
Comparative example 3
Comparative example waste water to be processed with embodiment 2, concrete operations and embodiment 2 the difference is that: without work
Property charcoal absorption.Waste water COD conversion ratio is 99.8% after into continous way wet oxidation, and copper ion is detected in water outlet greater than 5mg/L.
Comparative example 4
Comparative example waste water to be processed with embodiment 2, concrete operations and embodiment 2 the difference is that: anaerobic reaction
Process does not adjust acetic acid concentration, and the acetic acid concentration into anaerobic reactor is 2500mg/L.Through anaerobic organism reaction and aerobic life
After object reaction, water outlet COD reaches 2900mg/L, is not able to satisfy the grade III Standard of " integrated wastewater discharge standard " GB8978-1996.
Comparative example 5
Comparative example waste water to be processed with embodiment 2, concrete operations and embodiment 2 the difference is that: anaerobic reaction
Process does not adjust acetic acid concentration, and the acetic acid concentration into anaerobic reactor is 2500mg/L.Through anaerobic organism reaction and aerobic life
After object reaction, water outlet COD reaches 2900mg/L, is not able to satisfy the grade III Standard of " integrated wastewater discharge standard " GB8978-1996.
Embodiment 3
Using the method for system described in embodiment 1 processing high concentrated organic wastewater:
Waste water to be processed are as follows: certain chemical industry factory production waste water, pH value 9, COD 41100mg/L.
Processing step: waste water to be processed is imported into conditioning tank, is stirred evenly, in conditioning tank and continous way hydrothermal oxidization system
Between pipeline on dosing blender in add according to demand 2% concentration copper nitrate solution make catalyst quality concentration keep
0.2%, continous way hydrothermal oxidization system is imported；It is 300 DEG C that continous way hydrothermal oxidization system, which controls reaction temperature, oxygen purity
94%, coefficient of oxidation 0.95, reaction pressure 8MPa, reaction time 2h, through continous way hydrothermal oxidization system processed waste water
COD conversion ratio is 83.7%, and water outlet biodegradability is 0.5, pH 7.9；Water outlet is after heat exchange is cooling and from anaerobic reaction system
The sewage mixing rich in food acetic acid and methane producing bacterium extracted out in reaction adjusts acetic acid in 1000mg/L, pH and is in 7, imports anaerobism
Reaction system, stops 3 days by 35 DEG C of temperature；Through pipeline to aerobic reaction system, inside is filled with the water outlet of anaerobic reaction system
Partial size is the granular activated carbon of 5mm, and a height of 1.5m of active carbon layer, the residence time is 1.5 days, after anaerobism+aerobic process processing
Wastewater COD removal rate reaches 99.7%；Aerobic reaction system is discharged and imports activated carbon adsorption system, active carbon is that partial size is
The granular activated carbon of 5mm, activated carbon column is 5 meters high, and water outlet COD removes handling rate > 99.8% after the processing of active carbon filtering technique,
Metallic catalyst residual volume is difficult to detect；The active carbon of adsorption saturation is used for the active carbon of delivery of supplemental oxygen reaction system replacement, aerobic
The excess activated charcoal that reaction system generates imports intermittent wet oxidation system in batches, and each batch reactor processing volume is
100L is aoxidized using hydrogen peroxide and oxygen mix, and dioxygen water volume fraction is 13%, oxygen concentration 94%, and reaction temperature is
280 DEG C, reaction time 2h；Washing system is imported through intermittent wet oxidation system treated mixture, is 8.5 with pH
Sodium hydroxide lye cleaning desorption, regenerating active carbon rate is up to 98%.
Embodiment 4
Using the method for system described in embodiment 1 processing high concentrated organic wastewater:
Waste water to be processed are as follows: certain chemical industry factory production waste water, pH value 8, COD 30100mg/L.
Processing step: waste water to be processed is imported into conditioning tank, is stirred evenly, in conditioning tank and continous way hydrothermal oxidization system
Between pipeline on dosing blender in add the copper nitrate of 2% concentration and manganese nitrate solution according to demand and make catalyst quality
Concentration is maintained at 0.3%, imports continous way hydrothermal oxidization system；It is 320 DEG C that continous way hydrothermal oxidization system, which controls reaction temperature,
Oxygen purity 94%, coefficient of oxidation 1, reaction pressure 9MPa, reaction time 2.5h, at continous way hydrothermal oxidization system
Waste water COD conversion ratio is 85.2% after reason, and water outlet biodegradability is 0.54, pH 7.1；Water outlet is after heat exchange is cooling and from anaerobism
The sewage mixing rich in food acetic acid and methane producing bacterium extracted out in reaction system reaction, acetic acid control are in 7 in 1500mh/L, pH,
System temperature is 35 DEG C, and the residence time is 4 days；The water outlet of anaerobic reaction system is through pipeline to aerobic reaction system, inside dress
It is filled with the granular activated carbon that partial size is 5mm, a height of 1.5m of active carbon layer, the residence time is 1.5 days, at anaerobism+aerobic process
Wastewater COD removal rate reaches 99.8% after reason；Aerobic reaction system is discharged and imports activated carbon adsorption system, active carbon is partial size
For the granular activated carbon of 5mm, activated carbon column is 5 meters high, through active carbon filtering technique processing after water outlet COD go handling rate >
99.9%, metallic catalyst residual volume is difficult to detect, and reaches the grade III Standard of " integrated wastewater discharge standard " GB8978-1996；
The active carbon of adsorption saturation is used for the active carbon of delivery of supplemental oxygen reaction system replacement, the excess activated charcoal point that aerobic reaction system generates
The intermittent wet oxidation system that imports is criticized, each batch reactor processing volume is 100L, uses hydrogen peroxide and oxygen mix
Oxidation, dioxygen water volume fraction are 15%, and oxygen concentration 94%, reaction temperature is 300 DEG C, reaction time 2h；Through interval
Rotating vane type oxidative system treated mixture imports washing system, clean desorption with the sodium hydroxide lye that pH is 8.5, active
Charcoal regeneration rate is up to 98.5%.
Claims (4)
1. a kind of high-concentration organic wastewater treatment system, it is characterised in that:
Including be sequentially communicated by liquid line conditioning tank, continous way hydrothermal oxidization system, anaerobic reaction system, aerobic reaction
System and activated carbon adsorption system；
Wherein, activated carbon adsorption system is sequentially communicated aerobic reaction system, intermittent wet oxidation system further through solid pipeline
With washing active carbon system, active carbon circular treatment circuit is formed；
The water part of the activated carbon adsorption system is expelled directly out, and part imports washing active carbon system as slurry；
The liquid that the washing active carbon system and intermittent wet oxidation system generate directly is led after collecting by fluid pipeline
Enter conditioning tank.
2. system according to claim 1, which is characterized in that be additionally provided with one in the reaction zone of the anaerobic reaction system
It is connected to the pipeline of anaerobic reaction system feeding mouth, for by the mixture extraction in the stable reaction of anaerobic reaction system and continuously
Anaerobic reaction system is imported again after the water outlet mixing of formula hydrothermal oxidization system.
3. system according to claim 1, which is characterized in that be equipped with batch agitator in the anaerobic reaction system.
4. system according to claim 1, which is characterized in that the anaerobic reaction system is up-flow anaerobic sludge blanket；
The aerobic reaction system be biological aerated filter, used in filler be granular activated carbon.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108383335A (en) * | 2018-05-08 | 2018-08-10 | 江苏省环境科学研究院 | High-concentration organic wastewater treatment system and method |
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| CN108383335A (en) * | 2018-05-08 | 2018-08-10 | 江苏省环境科学研究院 | High-concentration organic wastewater treatment system and method |
| CN108383335B (en) * | 2018-05-08 | 2023-09-19 | 江苏省环境科学研究院 | High-concentration organic wastewater treatment system and method |
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