CN203728683U - High-concentration organic wastewater treatment system - Google Patents

High-concentration organic wastewater treatment system Download PDF

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CN203728683U
CN203728683U CN201420012765.2U CN201420012765U CN203728683U CN 203728683 U CN203728683 U CN 203728683U CN 201420012765 U CN201420012765 U CN 201420012765U CN 203728683 U CN203728683 U CN 203728683U
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anaerobic
waste water
subsystem
wastewater treatment
sludge
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张东曙
熊建英
邱立俊
甘宝鹏
顾帆
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SHANGHAI SHIYUAN ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
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SHANGHAI SHIYUAN ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a high-concentration organic wastewater treatment system. The system comprises a pretreatment sub-system, an anaerobic membrane bioreactor sub-system and an advanced treatment sub-system according to the flow direction of the wastewater, wherein the pretreatment sub-system is used for carrying out physical separation and pretreatment on inlet wastewater, and intercepting floating objects and large grained impurities in the wastewater; the anaerobic membrane bioreactor sub-system comprises an anaerobic reactor unit, an anaerobic settling pond unit and an ultra-filtration unit according to the flow direction of the wastewater; the advanced treatment sub-system is used for deeply removing pollutants in the wastewater discharged from the anaerobic membrane bioreactor sub-system, and gathering recycled high-concentration organic matters at the side of a concentrated solution. The high-concentration organic wastewater treatment system disclosed by the utility model can achieve the wastewater treatment and discharge standards under the condition of not adopting an aerobic MBR process, and also has the advantages of being energy-saving, economical in space, low in effective utilization of the product and sludge yield, easy to maintain and the like without the aerobic process.

Description

A kind of high-concentration organic wastewater treatment system
Technical field
The utility model relates to technical field of waste water processing, particularly a kind of high concentrated organic wastewater treatment process and treatment system.
Background technology
In water treatment field, conventional high concentrated organic wastewater mainly has following characteristics: the one, and organic concentration is high, COD(Chemical Oxygen Demand, chemical oxygen demand (COD)) generally more than 2000 mg/L, have even up to several ten thousand mg/L, comparatively speaking, BOD(biochemical oxygen demand (BOD) (Biochemical Oxygen Demand, BOD)) lower, the ratio of a lot of waste water BOD and COD is less than 0.3; The 2nd, complicated component, contains in toxicant waste water organism in the majority with aromatics and heterogeneous ring compound, more than contain sulfide, nitride, heavy metal and toxic organic compound; The 3rd, colourity is high, has peculiar smell, and some waste water gives out pungent stench, causes detrimentally affect to surrounding environment.Taking percolate as example, its COD concentration reaches as high as 90000mg/L, more than ammonia nitrogen concentration reaches as high as 2000mg/L, its pollutant load can reach the hundred times of general municipal wastewater, therefore on treatment process, is difficult to apply mechanically traditional sanitary sewage disposal technology.
In existing Technology of High Concentration OrganicWastewater Treatment field, the most conventional treatment process is anaerobism+aerobic MBR(Membrane Bio-Reactor membrane bioreactor)+membrane separation technique, this type of techniqueflow comprises:
1) physical sepn of influent waste water and pre-treatment, tackles floating matter and the large granular impurity in sewage by grid;
2) anaerobic biological processing, under anaerobic by some organic pollutants in the anaerobic sludge degradation of sewage of growth anerobe, and improves the biodegradability of sewage;
3) aerobic biochemical MBR system, is divided into biochemical section and ultrafiltration section, and biochemical section is under aerobic condition, and by growth aerobic bacteria active sludge and the abundant hybrid reaction of waste water, the organic pollutant in waste water is removed in degraded; In ultrafiltration section, carry out mud-water separation through reacted mud mixture via ultra-filtration membrane, clear liquid enters subsequent technique section, and sludge reflux to biochemical section keeps sludge concentration;
4) membrane sepn, produces water by the further residual contamination thing separating in concentrated waste water of the physical means such as nanofiltration, reverse osmosis by aerobic biochemical, can discharge the dense water of generating portion simultaneously after the clear liquid of generation is up to standard;
5) sludge treating system, the mud that materialization and biochemical reaction produce reduces sludge volume by mode concentrated, dehydration, reduces water ratio, is convenient to follow-up sludge disposal.
The concentration organic wastewater disposal process of above-mentioned routine has following defect:
1. traditional concentration organic wastewater disposal process need adopt aerobic treatment technology, in aerobic reaction tank, transmit oxygen by the form such as blast aeration, mechanical aeration, the a large amount of electric energy of said process consumption, the energy consumption of this technique unit accounts for the 40-60% of water treatment system total energy consumption;
2. adopt the technique of aerobic treatment must meet more stable throughout the year flooding quantity, when water shortage, mud lacks nutrition, need to additionally add nutrition; And interim when the wet season, aerobic sludge needs for some time to adapt to water quality and the water yield of percolate, and processing efficiency can not reach design requirements at once;
3. in traditional high-concentration waste water technology, aerobic biochemical effluent COD concentration is lower, enters the dense water producing after film separating system and is worth without recycling, simultaneously because concentration is high and complicated component is difficult to process disposal;
4. because existing technique adopts aerobic treatment technology more, this type systematic must supplement organism to keep the activity of aerobic sludge by the mode of water inlet operation continuously in reaction tank, if emitted no waste water, the mud in aerobic reaction pond can be difficult to maintain active because nutrition supply is not enough, under the condition of cutting off the water for a long time, even there is complete deactivated situation, for operation maintenance has brought difficulty, once manufacturing enterprise cannot ensure the stable supply of waste water water yield every day, the operation of system will be affected so;
5. conventional process technology adopts the two-stage biochemical treatment technique of anaerobic-aerobic, this type of technique in the time of operation to water temperature, water quality, multiple parameters such as dissolved oxygen all have higher requirements, and parameter request at different levels is different; In addition this type of technique also needs to be in series with the materialization of front end and the physical treatment technique of rear end, and treatment scheme is long, and these factors are all that actual motion management brings certain difficulty;
6. the aerobic reaction pond floor space in conventional processes is larger;
7. the surplus sludge volume that in conventional process technology, aerobic process produces is larger, conducts oneself well to comprehend and causes secondary pollution, and in the treating processes of this type of mud, also will cause a large amount of manpowers and the consumption of resource as improper.
Utility model content
The utility model provides a kind of high concentrated organic wastewater treatment process and treatment system, to solve the above-mentioned defect existing in prior art.
The technical solution of the utility model is as follows:
A kind of high-concentration organic wastewater treatment system, described system comprises according to the flow direction of waste water:
Preprocessing subsystem, for physical sepn and the pre-treatment of influent waste water, floating matter and large granular impurity in interception waste water;
Anaerobism MBR subsystem, its according to wastewater streams to comprising anaerobic reaction pool unit, anaerobism settling tank unit and ultra filtration unit, wherein said anaerobic reaction pool unit is used for the organic pollutant of degrading waste water under the effect of anerobe, and carries out gas, liquid, solid three phase separation; Described anaerobism settling tank unit is used for the anaerobic sludge of the waste water of removing described anaerobic reaction pool unit discharge; Described ultra filtration unit is for removing the majority of organic pollutants of the waste water of discharging from described settling tank unit; Described anaerobism MBR subsystem by increase waste water in residence time of anaerobic reaction pool unit, improve anaerobic reaction pool unit in anaerobic sludge adopt polymer filtrate to reduce the method raising wastewater treatment ability of sludge loss with the mixture strength of sewage with in anaerobic reaction pool unit exhalant region;
Advanced treatment subsystem, removes the pollutent the waste water of discharging from described anaerobism MBR subsystem for the degree of depth, and at the high-enriched organics of its dope lateral enrichment recoverable, and the concrete mode of utilizing can be for for fuel.
In a preferred implementation of the present utility model, described ultra filtration unit is external placed type ultrafiltration membrane system, is also provided with a control liquid level and ensures the normal intermediate pool of moving of system between described external placed type ultrafiltration membrane system and described anaerobism settling tank unit.
In a preferred implementation of the present utility model, described anaerobic reaction pool unit adopts anaeration in normal temperature, and temperature is controlled at 35~38 DEG C, and preferably, described anaerobic reaction pool unit carries out Heat preservation by steam heating to the medium in it, and carries out temperature control by PLC control heater.
In a preferred implementation of the present utility model, described anaerobic reaction pool unit comprises anaerobic reactor, waste water enters reaction mixing zone and contacts mixing with the anaerobic sludge in described anaerobic reactor from the bottom of described anaerobic reactor, described anaerobic sludge is the organic pollutant in degrading waste water under the effect of anerobe, in this DeR process, waste water produces biogas after acidication, the waste water mixed solution of carrying biogas and anaerobic sludge secretly rises to the three-phase separation area of described anaerobic reactor, rising is entered sludge gas collecting device by lighter biogas, heavier mud returns and is sink in reaction mixing zone, waste water enters aftertreatment device through the exhalant region that is provided with polymer filtrate.
In a preferred implementation of the present utility model, described reaction mixing zone adopts the mode of gravity or mechanically mixing to improve processing efficiency.
In a preferred implementation of the present utility model, described preprocessing subsystem comprise one for the evenly water quality of waste water and the equalizing tank of the water yield and for removing the settling tank of sand grains, partial suspended solid and organic pollutant, described equalizing tank front end is provided with floating matter for tackling waste water and the rotation fine grid machine of large granular impurity, and in described equalizing tank, keep certain sludge concentration, make waste water ooze drop liquid pre-anaerobic hydrolysis in equalizing tank.
In a preferred implementation of the present utility model, in described equalizing tank, be provided with underwater scooter to stir.
In a preferred implementation of the present utility model, described advanced treatment subsystem adopts NF or RO membrane separation assemblies to carry out advanced treatment, use high-pressure pump circulation to make waste water enter above-mentioned membrane separation assemblies, described membrane separation assemblies is held back the pollutent in waste water, discharge meets the water of emission standard, and can be used for the high-enriched organics of fuel at its dope lateral enrichment.
In a preferred implementation of the present utility model, described system also comprises for the treatment of described preprocessing subsystem and described anaerobism MBR subsystem discharges the sludge dewatering subsystem of mud and recharges subsystem for the dope of the high-enriched organics that reclaims described advanced treatment subsystem dope lateral enrichment.
Above-mentioned high concentrated organic wastewater treatment process and system that the utility model provides, saved aerobic MBR treatment system compared with traditional technology, anaerobic membrane bioreactor is directly connected with the membrane separation assemblies of advanced treatment, synergy by them completes wastewater treatment process, particularly, the anaerobism MBR subsystem that method of wastewater treatment of the present utility model adopts passes through to increase the residence time on the basis of traditional anaerobic reation pool, improve the mixture strength of anaerobic sludge and sewage, adopt the technique means such as polymer filtrate minimizing sludge loss to improve the processing power of this system, although the anaerobism MBR water outlet after ultra filtration unit mud-water separation still cannot reach the water quality of traditional anaerobic-aerobic MBR system water outlet, but because the membrane separation assemblies of follow-up series connection has very strong concentrated and separating power to residual contaminants, therefore by selecting membrane module that pore size filter is lower still can ensure the qualified discharge of final outflow water, wherein the pore size filter of membrane separation assemblies is preferably not more than 1nm, in addition, because organic concentration in the anaerobism MBR water outlet of penetration depth processing subsystem in the utility model is higher, therefore the dense glassware for drinking water producing after advanced treatment has quite high organic concentration, can be directly as reuse in auxiliary fuel factory, thus avoid the dense water producing in traditional technology need to transport outward the problem of disposal.
Compared with prior art, the beneficial effects of the utility model are as follows:
1. high concentrated organic wastewater treatment process of the present utility model and treatment system adopt improved anaerobism MBR binding film separation assembly to replace traditional anaerobic-aerobic MBR and advanced treatment system, save aerobic treatment unit, thereby save aeration process, saved a large amount of energy consumptions;
2. the utility model does not adopt aerobic treatment system, its system for anaerobic treatment adopting can be after long period of time out of service activity recovery in the short period of time, avoid the conventional treatment process cannot plug and play, in the time that the influent waste water water yield is unstable, be difficult to keep the good active problem of processing;
3. the waste water that utilizes system processing of the present utility model can have higher organic concentration entering the dope producing after film system, has certain combustion heat value, can be used as postcombustion and is added in fuel and burns;
4. the utility model adopts anaerobism MBR, and flow process is shorter compared with traditional anaerobic-aerobic MBR technique, and has avoided the unmanageable problem of water quality parameter of bringing because of Two-Stage Biochemical series operation;
5. the system in the utility model is owing to not adopting aerobic treatment process, and more traditional anaerobic-aerobic MBR technique floor space reduces 50% ~ 60%;
6. method of wastewater treatment of the present utility model and treatment system only adopt anaerobic biochemical reactor, because anaerobic sludge value-added speed is slower, output is lower, in actual motion, both can standing storage inoculate for the anaerobic sludge of other waste water, also can after conventional sludge treatment, properly dispose, because final sludge yield is far smaller than the sludge creation amount of aerobic process, therefore reduce the problem of secondary pollution, reduce simultaneously and needed to process the cost of disposing.
Certainly, implement arbitrary product of the present utility model and might not need to reach above-described all advantages simultaneously.
Brief description of the drawings
Fig. 1 is structure and the treatment scheme sketch of a kind of embodiment of the high-concentration organic wastewater treatment system of the utility model embodiment;
Fig. 2 is the anaerobic reation pool structure iron of the high-concentration organic wastewater treatment system of the utility model embodiment;
Fig. 3 is structure and the processing flow chart of a kind of embodiment of the high-concentration organic wastewater treatment system of the utility model embodiment.
Embodiment
The utility model provides a kind of external placed type anaerobic membrane bioreactor-membrane sepn combination process to process the system of high concentrated organic wastewater, and this system comprises according to the flow direction of waste water:
Preprocessing subsystem, for physical sepn and the pre-treatment of influent waste water, floating matter and large granular impurity in interception waste water;
Anaerobism MBR subsystem, its according to wastewater streams to comprising anaerobic reaction pool unit, anaerobism settling tank unit and ultra filtration unit, wherein said anaerobic reaction pool unit is used for the organic pollutant of degrading waste water under the effect of anerobe, and carries out gas, liquid, solid three phase separation; Described anaerobism settling tank unit is used for the anaerobic sludge of the waste water of removing described anaerobic reaction pool unit discharge; Described ultra filtration unit is for removing the majority of organic pollutants of the waste water of discharging from described settling tank unit; Described anaerobism MBR subsystem by increase waste water in residence time of anaerobic reaction pool unit, improve anaerobic reaction pool unit in anaerobic sludge adopt polymer filtrate to reduce the method raising wastewater treatment ability of sludge loss with the mixture strength of sewage with in anaerobic reaction pool unit exhalant region;
Advanced treatment subsystem, removes the pollutent the waste water of discharging from described anaerobism MBR subsystem for the degree of depth, and at the high-enriched organics of its dope lateral enrichment recoverable, and the concrete mode of utilizing can be for for fuel.
Traditional anaerobic-aerobic MBR technique, the major function of its anaerobic reation pool is to improve the biodegradability of dirty organic pollutants by the Degradation of anerobe, removes part COD simultaneously; Waste water after anaerobic treatment enters aerobic reaction pond, remove remaining COD(as the removal of considering ammonia nitrogen in waste water aerobic reaction system need add nitrated-denitrification region), outputted aerobic water after ultra-filtration and separation still needs to ensure that by other advanced treatment technology (nanofiltration, reverse osmosis, advanced oxidation etc.) final outflow water meets emission standard, the dense water of part simultaneously producing after advanced treatment is because COD concentration is higher, the water yield is less, conventional means cannot be processed, and needs outward transport to dispose.The method of the anaerobism MBR subsystem processes high concentrated organic wastewater that the utility model adopts, on the basis of traditional anaerobic reation pool, pass through to increase the residence time, improve the mixture strength of anaerobic sludge and sewage, in filler filter bed, adopt the technique means such as polymer filtrate minimizing sludge loss to improve the processing power of this system, although the anaerobism MBR water outlet after the ultrafiltration mud unit of anaerobism MBR subsystem water separates still cannot reach the water quality of traditional anaerobic-aerobic MBR system water outlet, but because the advanced treatment subsystem of follow-up series connection has very strong concentrated and separating power to residual contaminants, therefore in film processing subsystem by selecting the membrane module that pore size filter is lower (as pore size filter is not more than 1nm) still can ensure the qualified discharge of final outflow water, in addition, because the anaerobism MBR outlet water organic substance concentration of penetration depth treatment system in the utility model is higher, therefore the dense glassware for drinking water producing after advanced treatment has quite high organic concentration, can be directly as reuse in auxiliary fuel factory, thus avoid the dense water producing in traditional technology need to transport outward the problem of disposal.
By a specific embodiment, high concentrated organic wastewater treatment process of the present utility model and system are described below, but specific descriptions and explanation for each system component devices in following description are only for example, limit and be not used in concrete device or the device mode of connection that the utility model can adopt.
Embodiment
The high concentrated organic wastewater treatment process of the present embodiment, realizes by following high-concentration organic wastewater treatment system:
Refer to Fig. 1, a kind of high-concentration organic wastewater treatment system, described system comprises according to the flow direction of waste water:
Preprocessing subsystem, for physical sepn and the pre-treatment of influent waste water, floating matter and large granular impurity in interception waste water; Particularly in the present embodiment, preprocessing subsystem comprises: one for the evenly water quality of waste water and the equalizing tank of the water yield and for removing the settling tank of sand grains, partial suspended solid (SS) and organic pollutant, described equalizing tank front end is provided with floating matter for tackling waste water and the rotation fine grid machine of large granular impurity, wherein
Rotation fine grid machine is mainly used in holding back bulk pollutent and suspended solids (SS), ensures that equalizing tank promotes the normal work of water pump and piping system;
Equalizing tank, for water quality and the water yield of even waste water, so that subsequent biological treatment equipment is normally worked, ensures the steady running of sewage works; And, for avoiding depositing at the bottom of pond, in equalizing tank, preferably establish two underwater scooters and stir, make waste water ooze drop liquid and fully mix, avoid suspended substance precipitation; In addition, in described equalizing tank, also keep certain sludge concentration, make waste water ooze drop liquid pre-anaerobic hydrolysis in equalizing tank, to alleviate the processing pressure of follow-up anaerobism MBR subsystem.Certainly,, in other embodiment of the present utility model, can also adopt the conventional preprocessing subsystem in other any this areas; The quantity of the underwater scooter arranging in equalizing tank also can be selected other quantity according to actual needs, these are only and illustrates, and is not used in limitation protection domain of the present utility model;
Settling tank, owing to containing a large amount of suspended solids (SS) the waste water of discharging from equalizing tank, if this waste water directly enters anaerobism MBR subsystem, can cause anaerobic reation pool unit load to increase, anaerobic reation pool mud increases too fast, thereby affects anaerobic treatment effect; Therefore, in order follow-up biochemical system processing not to be brought to disadvantageous effect, the present embodiment arranges this settling tank, for removing sand grains, part SS and organic pollutant, thereby improves anaerobic technique condition; This settling tank can be set to any common with settling tank;
Anaerobism MBR subsystem, its according to wastewater streams to comprising anaerobic reaction pool unit, anaerobism settling tank unit and ultra filtration unit, wherein said anaerobic reaction pool unit is used for the organic pollutant of degrading waste water under the effect of anerobe, and carries out gas, liquid, solid three phase separation; Described anaerobism settling tank unit is used for the anaerobic sludge of the waste water of removing described anaerobic reaction pool unit discharge; Described ultra filtration unit is for removing the majority of organic pollutants of the waste water of discharging from described anaerobism settling tank unit; Wherein, described anaerobism settling tank unit can be settling tank;
Anaerobic reaction pool unit, is called for short anaerobic pond, conventionally uses anaerobic reactor, and its main part is anaerobic reation pool.Anaerobism can be divided into anaerobic in low temperature by temperature, anaeration in normal temperature and high temperature anaerobic, and its corresponding optimum growth temp is respectively 20 DEG C, 35 DEG C and 80 DEG C.Because microorganism active under cold condition is lower, and it is higher to maintain the running cost of high temperature anaerobic, and conventional anaerobic technology all adopts anaeration in normal temperature, maintains reactor temperature at 35 DEG C.This anaerobic reactor adopts anaeration in normal temperature, and temperature is controlled at 35~38 DEG C; But general winter temperature is lower, normal temperature waste water cannot meet this temperature of reaction, in the present embodiment, select, by steam heating, the medium in anaerobic reactor is carried out to Heat preservation, this anaerobic reactor inside arranges well heater, control above-mentioned well heater by programmable logic controller (PLC), anaerobic reaction actuator temperature can be strict controlled in the scope of above-mentioned needs; Concrete embodiment can be: consider that general blowdown enterprise on-site is all provided with steam-pipe, the road steam-pipe of can plugging into enters in anaerobic reactor, maintain its temperature of reaction by pipe heat-transfer, adopt temperature control PLC to control temperature of reaction within the scope of the temperature range of anaeration in normal temperature, for anaerobic reation pool provides optimum reaction condition simultaneously.
Particularly, the waste water of discharging from above-mentioned settling tank enters anaerobic reation pool reaction mixing zone from the bottom of described anaerobic reactor contacts mixing with the anaerobic sludge in described anaerobic reactor, anaerobic sludge is the organic pollutant in degrading waste water under the effect of anerobe, and in order to improve processing efficiency, the mode that can adopt gravity or mechanically mixing to stir improves the mixture strength of anaerobic sludge and sewage, and increase retention time of sewage by the volume that increases anaerobic reation pool, adopt polymer filtrate to improve the wastewater treatment ability of the anaerobic reactor of this step to reduce the method for sludge loss at exhalant region filler filter bed, in above-mentioned DeR process, waste water produces biogas after acidication, the waste water mixed solution of carrying biogas and anaerobic sludge secretly rises to the three-phase separation area of described anaerobic reactor, rising is entered sludge gas collecting device by lighter biogas, biogas after treatment can be used as the energy and uses, heavier mud returns and is sink in reaction mixing zone, and waste water enters anaerobism settling tank unit through exhalant region.
Anaerobism settling tank unit, can be set to any settling tank of conventionally using.Because the waste water that anaerobic reactor is discharged is carried a small amount of anaerobic sludge secretly, can damage hyperfiltration membrane assembly as directly entered ultra filtration unit, therefore between anaerobic reactor and two unit of ultra filtration unit, need to set up anaerobism settling tank, remove anaerobic sludge, the mud after precipitation in this anaerobism settling tank can be stored in mud storage tank;
Intermediate pool, is arranged between ultra filtration unit and anaerobism settling tank unit, and for controlling liquid level, guarantee system is normally moved;
In the present embodiment, ultra filtration unit is external placed type ultrafiltration membrane system, provides power with ultrafiltration recycle pump, makes waste water under high pressure see through ultra-filtration membrane, and majority of organic pollutants is trapped in to the opposite side of ultra-filtration membrane, and the clear liquid of output enters next handling procedure;
Advanced treatment subsystem, removes the pollutent the waste water of discharging from the ultra filtration unit of anaerobism MBR subsystem for the degree of depth, and at the high-enriched organics of its dope lateral enrichment recoverable, utilizes particularly the mode can be for as fuel utilization.Advanced treatment subsystem specifically adopts film separating system in the present embodiment.Although the suspended solids of the waste water of discharging due to ultra filtration unit from above-mentioned anaerobism MBR subsystem reaches emission standard, but other pollutent indexs can not reach emission standard, as ammonia nitrogen, COD etc., therefore, must enter follow-up advanced treatment technology, the present embodiment adopts with NF or RO membrane sepn advanced treatment technology at advanced treatment subsystem, waste water enters membrane separation assemblies under high-pressure pump circulation, because membrane separation assemblies aperture is minimum, conventionally be not more than 1nm, pollutent in waste water is trapped within dope side, the diaphragm that water molecules sees through membrane separation assemblies enters clear liquid side, the dope of the dope side of the above-mentioned advanced treatment process output of process, because organic contamination substrate concentration is higher, can be used as fuel utilization, and clear liquid is the water outlet that meets emission standard after collecting.
Device in above-mentioned wastewater treatment process, the high-concentration organic wastewater treatment system in the present embodiment also comprises for the treatment of preprocessing subsystem and anaerobism MBR subsystem discharges the sludge dewatering subsystem of mud and recharges subsystem for the dope that reclaims the pollutent that advanced treatment subsystem leaches.Wherein, sludge dewatering subsystem mainly comprises plate-and-frame filter press, and for dewatering from the mud of anaerobic reactor and the discharge of anaerobism settling tank, the mud after dehydration can carry out burning disposal, and the dehydration clear liquid of deviating from is back in equalizing tank.Dope recharges subsystem and mainly comprises concentrated liquid pool, and for collecting the dope of above-mentioned film separating system output, this organism dope organic concentration after collection is higher, can be used as postcombustion and is added in fuel and burns, or can return and be sprayed onto garbage storing hole.A kind of detailed diagram of the present embodiment system refers to Fig. 3.
The method that the above-mentioned Waste Water Treatment of employing the present embodiment carries out wastewater treatment comprises:
(1) pre-treatment step: make the pending high concentrated organic wastewater preprocessing subsystem of flowing through, by rotation fine grid machine, equalizing tank and settling tank, carry out physical sepn and the pre-treatment of waste water successively, floating matter and large granular impurity in interception waste water;
(2) anaerobic treatment step: will pass through successively through the pretreated waste water of step (1) anaerobic reaction pool unit, anaerobism settling tank unit, intermediate pool and the ultra filtration unit of external placed type anaerobic membrane bioreactor, anaerobic reaction pool unit is used for the organic pollutant of degrading waste water under the effect of anerobe, and carries out gas, liquid, solid three phase separation; Anaerobism settling tank unit is used for the anaerobic sludge of the waste water of removing described anaerobic reaction pool unit discharge; Intermediate pool control liquid level guarantee system is normally moved; Ultra filtration unit (external placed type ultrafiltration membrane system) is for removing the majority of organic pollutants of the waste water of discharging from settling tank unit;
(3) membrane sepn step: the water of discharging after described anaerobic treatment step is through the separating treatment of the membrane separation assemblies of high pressure operation, high concentration multiple, high yield water rate, be specifically NF or RO membrane separation assemblies in the present embodiment, discharge meets the water of emission standard, and obtaining the organism of high density in the dope side of membrane separation assemblies, the organism of described high density can be used as fuel utilization after collecting.
Adopt the method system of the present embodiment effectively to process high concentrated organic wastewater, as percolate.In percolate is processed, be applied as example with the high-concentration organic wastewater treatment system of the present embodiment and method below, the contrast of the utility model and traditional anaerobic-aerobic MBR technique treatment effect in each technique unit is described by following table 1 and table 2.Wherein, the each unit of the anaerobism MBR-membrane sepn combination process pollutant removal that table 1 is the present embodiment.
The each unit of the anaerobism MBR-membrane sepn combination process pollutant removal of table 1 the present embodiment
Table 2 is the each unit of traditional anaerobic-aerobic MBR technique pollutant removal.
The each unit of the traditional anaerobic-aerobic MBR of table 2 technique pollutant removal table
Can find by the data that contrast in above table 1 and table 2, the wastewater treatment process of traditional technology mainly completes in this two step of anaerobic and aerobic, and in this embodiment of the present utility model, wastewater treatment process mainly completes in anaerobism MBR subsystem and advanced treatment subsystem, but the water outlet of traditional technology and two systems for the treatment of system of the present utility model has all reached Effluent criteria.And, the Waste Water Treatment of this embodiment of the present utility model, because the glassware for drinking water of discharging in anaerobism MBR subsystem has higher COD concentration, so also ensured the organic concentration of the dope side of advanced treatment subsystem, make the organic concentration of this dope side higher, can recycle.
The utility model adopts anaerobism MBR subsystem-film separating system combination process to replace traditional anaerobic-aerobic MBR to carry out the processing of high concentrated organic wastewater, owing to having saved aerobic treatment system, therefore avoided traditional anaerobic-aerobic MBR due to a series of defects that the existence of aerobic system causes, there is the energy consumption of saving, reduce floor space, produce that sludge quantity is low, product recoverable and be actively easy to recover, be convenient to safeguard.
The high-concentration organic wastewater treatment system of the utility model and above-described embodiment has the following advantages:
1. adopt anaerobism MBR to replace traditional anaerobic-aerobic MBR, saved aerobic treatment unit, thereby saved aeration process, saved a large amount of energy consumptions;
2. the system for anaerobic treatment adopting can be after long period of time out of service activity recovery in the short period of time, avoided the conventional treatment process cannot plug and play, in the time that the influent waste water water yield is unstable, be difficult to keep the good active problem of processing;
3. the waste water of processing can have higher organic concentration entering the dope producing after film system, has certain combustion heat value, can be used as postcombustion and is added in fuel and burns;
4. adopt anaerobism MBR, flow process is shorter compared with traditional anaerobic-aerobic MBR technique, and has avoided the unmanageable problem of water quality parameter of bringing because of Two-Stage Biochemical series operation;
5. owing to not adopting aerobic treatment process, more traditional anaerobic-aerobic MBR technique floor space reduces 50% ~ 60%;
6. only adopt anaerobic biochemical reactor, because anaerobic sludge value-added speed is slower, output is lower, in actual motion, both can standing storage inoculate for the anaerobic sludge of other waste water, also can after conventional sludge treatment, properly dispose, because final sludge yield is far smaller than the sludge creation amount of aerobic process, therefore reduce the problem of secondary pollution, reduce simultaneously and needed to process the cost of disposing.
Disclosed the utility model preferred embodiment is just for helping to set forth the utility model above.Preferred embodiment does not have all details of detailed descriptionthe, and also not limiting this utility model is only described embodiment.Obviously,, according to the content of this specification sheets, can make many modifications and variations.These embodiment are chosen and specifically described to this specification sheets, is in order to explain better principle of the present utility model and practical application, thereby under making, technical field technician can understand and utilize the utility model well.The utility model is only subject to the restriction of claims and four corner and equivalent.

Claims (10)

1. a high-concentration organic wastewater treatment system, is characterized in that, described system comprises according to the flow direction of waste water: preprocessing subsystem, and for physical sepn and the pre-treatment of influent waste water, floating matter and large granular impurity in interception waste water;
Anaerobic membrane bioreactor subsystem, its according to wastewater streams to comprising anaerobic reaction pool unit, anaerobism settling tank unit and ultra filtration unit, wherein said anaerobic reaction pool unit is used for the organic pollutant of degrading waste water under the effect of anerobe, and carries out gas, liquid, solid three phase separation; Described anaerobism settling tank unit is used for the anaerobic sludge of the waste water of removing described anaerobic reaction pool unit discharge; Described ultra filtration unit is for removing the majority of organic pollutants of the waste water of discharging from described settling tank unit;
Advanced treatment subsystem, removes the pollutent the waste water of discharging from described anaerobic membrane bioreactor subsystem for the degree of depth, and at the high-enriched organics of its dope lateral enrichment recoverable.
2. high-concentration organic wastewater treatment system as claimed in claim 1, it is characterized in that, described ultra filtration unit is external placed type ultrafiltration membrane system, is also provided with a control liquid level and ensures the normal intermediate pool of moving of system between described external placed type ultrafiltration membrane system and described anaerobism settling tank unit.
3. high-concentration organic wastewater treatment system as claimed in claim 1 or 2, it is characterized in that, described anaerobic reaction pool unit adopts anaeration in normal temperature, temperature is controlled at 35~38 DEG C, by steam heating, the medium in it is carried out to Heat preservation, and carry out temperature control by Controlled by Programmable Controller well heater.
4. high-concentration organic wastewater treatment system as claimed in claim 1, it is characterized in that, described anaerobic reaction pool unit comprises anaerobic reactor, waste water enters reaction mixing zone and contacts mixing with the anaerobic sludge in described anaerobic reactor from the bottom of described anaerobic reactor, described anaerobic sludge is the organic pollutant in degrading waste water under the effect of anerobe, in this DeR process, waste water produces biogas after acidication, the waste water mixed solution of carrying biogas and anaerobic sludge secretly rises to the three-phase separation area of described anaerobic reactor, rising is entered sludge gas collecting device by lighter biogas, heavier mud returns and is sink in reaction mixing zone, waste water enters aftertreatment device through the exhalant region that is provided with polymer filtrate.
5. high-concentration organic wastewater treatment system as claimed in claim 4, is characterized in that, described reaction mixing zone adopts the mode of gravity or mechanically mixing to improve processing efficiency.
6. high-concentration organic wastewater treatment system as claimed in claim 1, it is characterized in that, described preprocessing subsystem comprise one for the evenly water quality of waste water and the equalizing tank of the water yield and for removing the settling tank of sand grains, partial suspended solid and organic pollutant, described equalizing tank front end is provided with floating matter for tackling waste water and the rotation fine grid machine of large granular impurity, and in described equalizing tank, keep certain sludge concentration, make waste water ooze drop liquid pre-anaerobic hydrolysis in equalizing tank.
7. high-concentration organic wastewater treatment system as claimed in claim 6, is characterized in that, is provided with underwater scooter to stir in described equalizing tank.
8. high-concentration organic wastewater treatment system as claimed in claim 1, is characterized in that, described advanced treatment subsystem adopts NF or RO membrane separation assemblies to carry out advanced treatment, uses high-pressure pump circulation to make waste water enter above-mentioned membrane separation assemblies.
9. high-concentration organic wastewater treatment system as claimed in claim 8, is characterized in that, the pore size filter of described NF or RO membrane separation assemblies is not more than 1nm.
10. high-concentration organic wastewater treatment system as claimed in claim 1, it is characterized in that, described system also comprises for the treatment of described preprocessing subsystem and described anaerobic membrane bioreactor subsystem discharges the sludge dewatering subsystem of mud and recharges subsystem for the dope of the high-enriched organics that reclaims described advanced treatment subsystem dope lateral enrichment.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103723891A (en) * 2014-01-09 2014-04-16 上海世渊环保科技有限公司 High-concentration organic wastewater treatment method and system
CN104973737A (en) * 2015-07-22 2015-10-14 中国农业大学 Method for treating organic wastewater with high suspended solid concentration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103723891A (en) * 2014-01-09 2014-04-16 上海世渊环保科技有限公司 High-concentration organic wastewater treatment method and system
CN104973737A (en) * 2015-07-22 2015-10-14 中国农业大学 Method for treating organic wastewater with high suspended solid concentration
CN104973737B (en) * 2015-07-22 2017-04-05 中国农业大学 A kind of method for processing higher suspension solid concentration organic wastewater

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