CN104030437A - Biological combined reactor used for printing and dyeing waste water processing, device and method - Google Patents
Biological combined reactor used for printing and dyeing waste water processing, device and method Download PDFInfo
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- CN104030437A CN104030437A CN201410057842.0A CN201410057842A CN104030437A CN 104030437 A CN104030437 A CN 104030437A CN 201410057842 A CN201410057842 A CN 201410057842A CN 104030437 A CN104030437 A CN 104030437A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000004043 dyeing Methods 0.000 title claims abstract description 59
- 238000007639 printing Methods 0.000 title claims abstract description 43
- 238000012545 processing Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 239000012528 membrane Substances 0.000 claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 36
- 239000010802 sludge Substances 0.000 claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 60
- 238000003541 multi-stage reaction Methods 0.000 claims description 56
- 238000011282 treatment Methods 0.000 claims description 40
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- 230000005484 gravity Effects 0.000 claims description 22
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- 239000004744 fabric Substances 0.000 claims description 12
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- 239000008187 granular material Substances 0.000 claims description 12
- 238000005243 fluidization Methods 0.000 claims description 11
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 9
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- 238000005273 aeration Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
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- 238000001556 precipitation Methods 0.000 claims description 5
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Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a biological combined reactor used for printing and dyeing waste water processing. The reactor comprises an anaerobic baffling reacting zone, an anaerobic return chamber and an aerobiotic dynamic reaction zone. The water inlet of the reactor is disposed in the anaerobic baffling reacting zone. The anaerobic baffling reacting zone is compartmented into two or more baffling chambers by compartmenting walls. The baffling chambers are provided with vertical baffling plates and inoculated with active particle sludge accounting for one third to a half of the effective volume of the baffling chambers. The aerobiotic dynamic reaction zone is compartmented into a first compartment, a second compartment and a third compartment by two baffling plates. The second compartment is inoculated with one third to a half of the active particle sludge. The second compartment is provided with a grating net and an aerating system is disposed on the grating net. The first compartment and the third compartment are respectively provided with a bag type membrane assembly. The invention also provides a printing and dyeing waste water processing device comprising the reactor and a printing and dyeing waste water processing method by utilization of the reactor. The reactor, the device and the method are advantaged by simple process, low cost, stable running, good discharging water quality, and the like.
Description
Technical field
The present invention relates to field of waste water treatment, the high COD concentration, high ammonia nitrogen, the high chroma that are particularly applicable to the operation generations such as alkali decrement, destarch mix the devices and methods therefor for the treatment of of dyeing wastewater.
Background technology
The comprehensive regulation of trade effluent has become one of Contemporary Environmental work significant problem urgently to be resolved hurrily.Wherein the water resources of textile dyeing and finishing industry is taken each industrial second of Liang Wei China, and wastewater discharge occupies the 6th, the whole nation, and wherein dyeing waste water accounts for the more than 80% of national textile wastewater discharge.Existing printing and dyeing mill is mainly processing pure cotton fabric and cotton, chemical fiber blended fabrics, pure chemical & blended fabric, is conventionally divided into pre-treatment, floats refining, the main treatment process such as stamp, arrangement.Along with the development of chemical fibre polyester textile and the introduction of alkali deweighting treating technology, alkali decrement operation has become the topmost pretreatment procedure of China, but alkali decrement operation has produced a large amount of unmanageable alkali decrement waste waters simultaneously, and subsequent handling has also produced the dyeing waste water of the high densitys such as a large amount of desized wastewaters, printing waste water, difficult for biological degradation.In fact, alkali decrement waste water, printing waste water and other high-concentration printing and dyeing wastewater mixing aftertreatment in treatment of dyeing wastewater process, so not only increased intractability and the processing costs of integrated printing and dyeing waste water, and conventional waste water treatment process is also difficult to realize the qualified discharge after its high standard is processed.
The complicated organic substance of the difficult degradations such as the macromolecular polymer producing in each treatment process of dyeing waste water, dyestuff, PVA, auxiliary agent, dissolve in a large amount of alkali decrement dyeing waste waters, increased to a great extent the difficulty that alkali decrement dyeing waste water is administered, thereby made traditional bioremediation can not reach good treatment effect.Therefore dyeing waste water has the features such as water quality complexity, large, the difficult biological treatment of the water yield, is focus and the difficult point of the research of field of waste water treatment always.
Along with industrialized development, the intractability of dyeing waste water strengthens, simultaneously high, the weak effect of the cost for wastewater treatment of textile printing and dyeing industry and poor stability, therefore several treatment technologies form the development trend that a set of complete high-activity treatment of textile dye waste treatment combination technique becomes techniques of Dyeing Wastewater Treatment.For improving constantly and the requirement of energy-saving and emission-reduction of textile dyeing and finishing industry standard, seek a kind of efficient, simple, cheap technique of processing high concentration alkali decrement destarch composite waste, for processing engineering design and the application of similar waste water in this kind and every profession and trade provides foundation, have important practical significance.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of efficient, simple, cheap biological composite reaction device, device and method of processing high concentration alkali decrement destarch composite waste.For achieving the above object, the technical solution used in the present invention is as follows:
For a biological composite reaction device for treatment of dyeing wastewater, comprise anaerobic baffled reaction zone, anaerobism return passage and aerobic dynamic response district; The water inlet of described biological composite reaction device is located at anaerobic baffled reaction zone;
Described anaerobic baffled reaction zone is divided into two or more baffling chambers by partition wall, is vertically provided with water eliminator in baffling chamber, and in baffling chamber, inoculation has active sludge or the anaerobic grain sludge that accounts for baffling chamber useful volume 1/3-1/2.
Further, in described biological composite reaction device, described aerobic dynamic response district is divided into the first compartment, the second compartment and the 3rd compartment successively by two water eliminators, and the upper and lower of three compartments is UNICOM respectively; The second compartment inoculation has 1/3-1/2 granule sludge; The second compartment is provided with grid, and top is provided with aerating system; The first compartment and the 3rd compartment are provided with pocket type membrane module.
Further, in described biological composite reaction device, described pocket type membrane module comprises framework and mould material, and described mould material comprises cloth mould material; Pocket type membrane module bottom is provided with water outlet, and water-out manners comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.
A printing and dyeing wastewater processing equipment, comprises the equalizing tank that catchments, advanced oxidation pond, biological composite reaction device, coagulation floatation and upflow type aerating biological filter;
Described biological composite reaction device comprises anaerobic baffled reaction zone, anaerobism return passage and aerobic dynamic response district; The water inlet of described biological composite reaction device is located at anaerobic baffled reaction zone;
Described anaerobic baffled reaction zone is divided into two or more baffling chambers by partition wall, is vertically provided with water eliminator in baffling chamber, and in baffling chamber, inoculation has 1/3-1/2 active sludge or anaerobic grain sludge.
Further, in described printing and dyeing wastewater processing equipment, described aerobic dynamic response district is divided into the first compartment, the second compartment and the 3rd compartment successively by two water eliminators, and the upper and lower of three compartments is UNICOM respectively; The second compartment inoculation has 1/3-1/2 granule sludge; The second compartment is provided with grid, and top is provided with aerating system; The first compartment and the 3rd compartment are provided with pocket type membrane module;
Described pocket type membrane module comprises framework and mould material, and described mould material comprises cloth mould material; Pocket type membrane module bottom is provided with water outlet, and water-out manners comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.
Further, in described printing and dyeing wastewater processing equipment, the water inlet of described upflow type aerating biological filter and water outlet are located at respectively bottom and the top of described upflow type aerating biological filter; Described upflow type aerating biological filter is provided with filter material layer and filter plate, and the filtrate material of filter material layer comprises haydite, zeolite, expanded spheres clay or gac, and the particle diameter of filtrate is 2-5mm;
In the middle of filter material layer and filter plate, be provided with supporting layer, supporting layer comprises cobble or the magnetite that 5-20cm is high; Described upflow type aerating biological filter is also provided with back-purge system and aerating system, and aerating system is located at filter material layer bottom or supporting layer.
A treatment method of printing and dying wastewater, comprises step:
Waste water enters in the equalizing tank that catchments to carry out water quality and quantity adjusting;
Waste water enters advanced oxidation pond to carry out oxidizing reaction;
Waste water enters biological composite reaction device and carries out pollutant removal;
Waste water enters coagulation floatation and processes;
Waste water enters upflow type aerating biological filter and processes;
By directly discharge of the tail water obtaining, reuse or advanced treatment;
Wherein, described biological composite reaction device comprises anaerobic baffled reaction zone, anaerobism return passage and aerobic dynamic response district; The water inlet of described biological composite reaction device is located at anaerobic baffled reaction zone;
Described anaerobic baffled reaction zone is divided into two or more baffling chambers by partition wall, is vertically provided with water eliminator in baffling chamber, and in baffling chamber, inoculation has 1/3-1/2 active sludge or anaerobic grain sludge.
Further, in described treatment method of printing and dying wastewater, before entering the equalizing tank that catchments, waste water also comprises pre-treatment step: with the grid filtration of 5mm, remove the large granular impurity in waste water;
Described advanced oxidation pond comprises oxidation zone, reduction zone, iron oxide precipitation district and pH regulator district;
Waste water enters after oxidation zone, regulates wastewater pH to add strong oxidizer and carry out Air Exposure to 3.5-4.0;
Waste water enters behind reduction zone, regulates wastewater pH to 8.0-8.5;
Waste water enters behind pH regulator district, regulates wastewater pH to 7.0-8.0.
Further, in described treatment method of printing and dying wastewater, described aerobic dynamic response district is divided into the first compartment, the second compartment and the 3rd compartment successively by two water eliminators, and the upper and lower of three compartments is UNICOM respectively; The second compartment inoculation has 1/3-1/2 granule sludge; The second compartment is provided with grid, and top is provided with aerating system, makes on the current direction of the second compartment, under the current direction of the first compartment and the 3rd compartment by aeration water impact;
The upflow velocity of controlling current by reflux pump in anaerobic baffled reaction zone is between critical fluidization velocity and go out between speed;
The first compartment and the 3rd compartment are provided with pocket type membrane module; Described pocket type membrane module comprises framework and mould material, and described mould material comprises cloth mould material; Pocket type membrane module bottom is provided with water outlet, and water-out manners comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet;
From the water outlet whereabouts of anaerobic baffled reaction zone, comprise: be back to baffling chamber; Enter aerobic dynamic response district; Enter anaerobism return passage.
Further, in described treatment method of printing and dying wastewater, the water inlet of described upflow type aerating biological filter and water outlet are located at respectively bottom and the top of described upflow type aerating biological filter; Described upflow type aerating biological filter is provided with filter material layer and filter plate, and the filtrate material of filter material layer comprises haydite, zeolite, expanded spheres clay or gac, and the particle diameter of filtrate is 2-5mm;
In the middle of filter material layer and filter plate, be provided with supporting layer, supporting layer comprises cobble or the magnetite that 5-20cm is high;
Described upflow type aerating biological filter is also provided with aerating system, and aerating system is located at filter material layer bottom or supporting layer;
Upflow type aerating biological filter is also provided with back-purge system; The waste water that back flushing produces is back to coagulation floatation and processes.
After taking technique scheme, beneficial effect of the present invention is: through the processing of printing and dyeing wastewater processing equipment described in present embodiment, the surplus sludge volume of generation is few, can not establish settling tank, saves the occupation of land of settling tank.And can be used in combination with plant area other treatment process according to the principle of the shunting of removing contamination, be applicable to reconstruction, the enlarging in plant area's later stage.This also just means that the present invention not only can process engineering for newly-built high-concentration printing and dyeing wastewater, can also propose high-level enlarging to built printing and dyeing wastewater treatment system simultaneously, have that technique is simple, capital construction and the advantage such as running cost is cheap, simple to operate, stable, floor space is little, effluent quality is good, anti-shock loading is strong, particularly for COD, ammonia nitrogen, the colourity of high density, can efficiently remove, realize the efficient processing of dyeing waste water.
Accompanying drawing explanation
Fig. 1 is that the present invention is the structural representation of a kind of biological composite reaction device for treatment of dyeing wastewater in an embodiment of the present invention;
Fig. 2 is the schematic perspective view of a kind of biological composite reaction device for treatment of dyeing wastewater in an embodiment of the present invention;
Fig. 3 is the structural representation of a kind of printing and dyeing wastewater processing equipment in another embodiment of the present invention;
Fig. 4 is the structural representation in the advanced oxidation pond in a kind of printing and dyeing wastewater processing equipment in another embodiment of the present invention;
Fig. 5 is the structural representation of the upflow type aerating biological filter in a kind of printing and dyeing wastewater processing equipment in another embodiment of the present invention.
Label declaration:
1-biological composite reaction device
The anaerobic baffled reaction zone of 100-
101-anaerobism return passage
The aerobic dynamic response of 102-district
103-biological composite reaction device water inlet
104-partition wall
105-baffling chamber
106-water eliminator
107-active particle mud
108-the first compartment
109-the second compartment
110-the 3rd compartment
111-grid
112-aerating system
113-pocket type membrane module
114-framework
115-non-woven membrane
116-reflux pump
4-advanced oxidation pond
401-oxidation zone
402-reduction zone
403-iron oxide precipitation district
404-pH regulatory region
5-biological filter
501-biological filter water inlet
502-biological filter water outlet
503-biological filter aerating system
504-back-purge system
505-filter material layer
506-filter plate
507-supporting layer
The 2-equalizing tank that catchments
3-coagulation floatation
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1 and Fig. 2; Fig. 1 is the structural representation of a kind of biological composite reaction device 1 for treatment of dyeing wastewater in an embodiment of the present invention; Fig. 2 is the schematic perspective view of a kind of biological composite reaction device for treatment of dyeing wastewater in an embodiment of the present invention.In figure, black thick arrow represents flow direction.Described biological composite reaction device 1 comprises anaerobic baffled reaction zone 100, anaerobism return passage 101 and aerobic dynamic response district 102; The water inlet 103 of described biological composite reaction device 1 is located at anaerobic baffled reaction zone 100; The water outlet of anaerobic baffled reaction zone 100 is connected with the water inlet 103 of dynamic response anaerobism return passage 101, aerobic district 102, anaerobic baffled reaction zone 100 respectively;
Anaerobic baffled reaction zone 100 is positioned at the front end of biological composite reaction device 1, and the water inlet of whole biological composite reaction device 1 is also located at anaerobic baffled reaction zone water inlet 103.Anaerobic baffled reaction zone 100 is divided into four baffling chambers 105 by three partition walls 104.In other embodiments, the number of baffling chamber 105 can also be two, three, more than five or five.In baffling chamber 105, be vertically provided with water eliminator 106, make waste water upper and lower snakelike flowing in each baffling chamber 105.And in baffling chamber, inoculation has the active particle mud 107 that accounts for baffling chamber 105 useful volume 1/3-1/2.In other modes, can also inoculate the anaerobic grain sludge that accounts for baffling chamber 105 useful volume 1/3-1/2.
The water outlet of anaerobic baffled reaction zone 100 enters anaerobism return passage 101, and part effluent recycling is to baffling chamber 105, and another part enters aerobic dynamic response district 102.Described aerobic dynamic response district 102 is divided into the upper and lower difference UNICOM of the first compartment 108, the second compartment 109 and 110, three compartments of the 3rd compartment successively by two water eliminators 106; The second compartment 109 inoculations have 1/3-1/2 active particle mud 107; The second compartment 109 is provided with grid 111, top is provided with aerating system 112, by aeration water impact, make the flow direction of the second compartment 109 be positioned at the first compartment 108 and the 3rd compartment 110 of its both sides, form good closed cycle current fluidised form, under the current direction of the first compartment 108 and the 3rd compartment 110, on the current direction of the second compartment 109, so just, make active particle mud 107 form Biological expanded bed in the second compartment 109, there is higher aerobic dynamic response district 102 sludge concentrations and biochemical mass-transfer efficiency, guaranteed the high efficiency of biological composite reaction device 1.
The first compartment 108 and the 3rd compartment 110 are provided with pocket type membrane module 113.Described pocket type membrane module 113 comprises framework 114 and non-woven membrane 115, and in other embodiment, mould material can also be other cloth mould materials or other inexpensive films materials; The water-out manners of pocket type membrane module comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.Biological composite reaction device 1 in present embodiment combines Dynamic Membrane treatment technology in aerobic dynamic response district 102, apply the cheap mould materials such as non-woven fabrics and make packed membrane module, with the contrast of current dynamic film component, thus have advantages of that membrane flux is large, be difficult for film pollute, cheap, can run by gravity water outlet energy-saving and cost-reducing.Especially corresponding to the modal pollution problem of mould material, because active particle mud 107 is mainly inoculated in the second compartment 109, and the first compartment 108 of both sides and the sludge quantity of the 3rd compartment 110 are few, this film that has just extended to a great extent membrane module in the compartment of both sides pollutes the cycle.
In anaerobic baffled reaction zone 100, there is internal recycle and be provided with reflux pump 116 to control the upflow velocity in anaerobic baffled reaction zone 100, make upflow velocity in each baffling chamber 105 between critical fluidization velocity and go out between speed.Wherein, critical fluidization velocity is the key parameter that fixed bed changes to fluidized-bed, and it is actually the minimum velocity that makes carrier granule fluidisation.The speed of going out is the speed that carrier granule flows out from fluidized-bed along with current.So, each baffling chamber 105 forms the structure of similar three-phase anaerobe fluidized-bed, impels the formation of active particle mud 107 in each baffling chamber 105, thereby improves the contaminant removal efficiency of anaerobic stages.In addition, in other embodiments, can also to reach the object that reclaims biogas bioenergy, in the recycling of energy, also there is significant advantage by the airtight Marsh gas collector that arranges in anaerobic baffled reaction zone 100.
In whole biological composite reaction device 1, have anaerobic type, oxygen-starved and the reaction of aerobic type concurrently, not only there is higher COD removal efficiency, also have the effect of good denitrogenation dephosphorizing simultaneously.
Referring to Fig. 3, is the structural representation of a kind of printing and dyeing wastewater processing equipment in another embodiment of the present invention.Described printing and dyeing wastewater processing equipment comprises the equalizing tank 2 that catchments, advanced oxidation pond 4, biological composite reaction device 1, coagulation floatation 3 and 5 five unit of upflow type aerating biological filter, and pending waste water is successively by these five unit of the equalizing tank that catchments, advanced oxidation pond, biological composite reaction device, coagulation floatation and upflow type aerating biological filter.
Catchment equalizing tank 2 for waste water is carried out to water quality and quantity adjusting therein, to reach the object of balanced water quantity and quality.From the water outlet of the equalizing tank 2 that catchments, by sewage pump, enter advanced oxidation pond 4.
Referring to Fig. 4, is the structural representation in the advanced oxidation pond in a kind of printing and dyeing wastewater processing equipment in another embodiment of the present invention.Advanced oxidation pond 4 comprises oxidation zone 401, reduction zone 402, iron oxide precipitation district 403He pH regulator district 404.Waste water enters after oxidation zone 401, adds Feton reagent (Fe in oxidation zone 401
2+and H
2o
2the reagent forming) as strong oxidizer, and improve oxidation efficiency by aeration, make the small-molecule substance that the difficult degradation macromolecular substance oxygenolysis in waste water is easy degraded.
In the alkali decrement destarch comprehensive wastewater that dyeing process produces, contain a large amount of hardly degraded organic substances, as terephthalic polyester, PVA, various auxiliary and dyestuff, therefore general biochemical treatment this type organic of cannot thoroughly degrading, this has also just increased the difficulty that waste water is further deepened processing.The present invention introduces advanced oxidation system in device, chemical substance to the difficult for biological degradation in alkali decrement destarch comprehensive wastewater is carried out strong oxide treatment, waste water after processing enters biological composite reaction device 1 again and processes, and so just can degrade and remove hardly degraded organic substances a large amount of in waste water.It is worth mentioning that, although facts have proved the biological process superpolymer compound of generally degrading, but the HRT(Hydraulic Retention Time needing, claim again hydraulic detention time, refer to that the mean residence time for the treatment of sewage in reactor is the average reaction time of microbial process in sewage and bio-reactor) very long.In the actual implementation process of technical scheme, in order to reduce the HRT of whole technique, physico-chemical process setting is necessary, with this, improves the processing efficiency of whole treatment process.
Described biological composite reaction device 1 comprises anaerobic baffled reaction zone 100, anaerobism return passage 101 and aerobic dynamic response district 102; The water inlet 103 of described biological composite reaction device 1 is located at anaerobic baffled reaction zone 100; The water outlet of anaerobic baffled reaction zone 100 is connected with the water inlet 103 of dynamic response anaerobism return passage 101, aerobic district 102, anaerobic baffled reaction zone 100 respectively.
Anaerobic baffled reaction zone 100 is positioned at the front end of biological composite reaction device 1, and the water inlet of whole biological composite reaction device 1 is also located at anaerobic baffled reaction zone water inlet 103.Anaerobic baffled reaction zone 100 is divided into four baffling chambers 105 by three partition walls 104.In other embodiments, the number of baffling chamber 105 can also be two, three, more than five or five.In baffling chamber 105, be vertically provided with water eliminator 106, make waste water upper and lower snakelike flowing in each baffling chamber 105.And in baffling chamber, inoculation has the active particle mud 107 that accounts for baffling chamber 105 useful volume 1/3-1/2.In other modes, can also inoculate the anaerobic grain sludge that accounts for baffling chamber 105 useful volume 1/3-1/2.
The water outlet of anaerobic baffled reaction zone 100 enters anaerobism return passage 101, and part effluent recycling is to baffling chamber 105, and another part enters aerobic dynamic response district 102.Described aerobic dynamic response district 102 is divided into the upper and lower difference UNICOM of the first compartment 108, the second compartment 109 and 110, three compartments of the 3rd compartment successively by two water eliminators 106; The second compartment 109 inoculations have 1/3-1/2 active particle mud 107; The second compartment 109 is provided with grid 111, top is provided with aerating system 112, by aeration water impact, make the flow direction of the second compartment 109 be positioned at the first compartment 108 and the 3rd compartment 110 of its both sides, form good closed cycle current fluidised form, under the current direction of the first compartment 108 and the 3rd compartment 110, on the current direction of the second compartment 109, so just, make active particle mud 107 form Biological expanded bed in the second compartment 109, there is higher aerobic dynamic response district 102 sludge concentrations and biochemical mass-transfer efficiency, guaranteed the high efficiency of biological composite reaction device 1.
The first compartment 108 and the 3rd compartment 110 are provided with pocket type membrane module 113.Described pocket type membrane module 113 comprises framework 114 and non-woven membrane 115, and in other embodiment, mould material can also be other cloth mould materials or other inexpensive films materials; The water-out manners of pocket type membrane module comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.Biological composite reaction device 1 in present embodiment combines Dynamic Membrane treatment technology in aerobic dynamic response district 102, apply the cheap mould materials such as non-woven fabrics and make packed membrane module, with the contrast of current dynamic film component, thus have advantages of that membrane flux is large, be difficult for film pollute, cheap, can run by gravity water outlet energy-saving and cost-reducing.Especially corresponding to the modal pollution problem of mould material, because active particle mud 107 is mainly inoculated in the second compartment 109, and the first compartment 108 of both sides and the sludge quantity of the 3rd compartment 110 are few, this film that has just extended to a great extent membrane module in the compartment of both sides pollutes the cycle.
In anaerobic baffled reaction zone 100, there is internal recycle and be provided with reflux pump 116 to control the upflow velocity in anaerobic baffled reaction zone 100, make upflow velocity in each baffling chamber 105 between critical fluidization velocity and go out between speed, wherein, critical fluidization velocity is the key parameter that fixed bed changes to fluidized-bed, and it is actually the minimum velocity that makes carrier granule fluidisation.The speed of going out is the speed that carrier granule flows out from fluidized-bed along with current.So, each baffling chamber 105 forms the structure of similar three-phase anaerobe fluidized-bed, impels the formation of active particle mud 107 in each baffling chamber 105, thereby improves the contaminant removal efficiency of anaerobic stages.In addition, in other embodiments, can also to reach the object that reclaims biogas bioenergy, in the recycling of energy, also there is significant advantage by the airtight Marsh gas collector that arranges in anaerobic baffled reaction zone 100.
In whole biological composite reaction device 1, have anaerobic type, oxygen-starved and the reaction of aerobic type concurrently, not only there is higher COD removal efficiency, also have the effect of good denitrogenation dephosphorizing simultaneously.
Water outlet from biological composite reaction device 1 continues to enter coagulation floatation 3 and processes.Particularly, coagulation floatation 3 comprises mixing pit and air flotation pool, water outlet dosing coagulant and flocculation agent in mixing pit first, and then water outlet enters air flotation pool, carries out coagulation air-float solid-liquid separation.Consequent mud can enter sludge treating system and process.
In the treating processes of coagulation floatation 3, coagulation air-float not only can be removed the most suspended substances in waste water, has the effect that reduces chroma in waste water simultaneously.In other embodiment, can also be in conjunction with the lower waste water treatment process of other Pollutant levels of printing and dyeing mill, the waste water of lower concentration is entered to the upflow type aerating biological filter 5 that enters again next step after coagulation floatation is processed and process.
In present embodiment, from the water outlet of coagulation floatation 3, continue to enter upflow type aerating biological filter 5 and process.Referring to Fig. 5, is the structural representation of the upflow type aerating biological filter in a kind of printing and dyeing wastewater processing equipment in another embodiment of the present invention.The mode that enters water and effluent adopting bottom in and top out of described upflow type aerating biological filter 5, biological filter water inlet 501 is located at the bottom of biological filter 5, and biological filter water outlet 502 is located at the top of biological filter 5.Except inlet and outlet system, biological filter 5 is also provided with biological filter aerating system 503 and back-purge system 504.In the middle of filter material layer 505 and filter plate 506, be provided with supporting layer 507, supporting layer 508 is that cobble or the magnetite that 5-20cm is high forms; Biological filter aerating system 503 is located in supporting layer 508, and in another embodiment, biological filter aerating system 504 can be located at the bottom of filter material layer 505.The optional material of filtrate is haydite, zeolite, expanded spheres clay, gac etc., and the particle diameter of filtrate is 2-5mm.The waste water that back-purge system 504 produces is processed the mixing pit being back in coagulation floatation 3.
Upflow type aerating biological filter 5 can be processed the waste water of underload, on the basis of aforesaid processing unit further to dyeing waste water decolour, denitrogenation, carbonization, guarantee that tail water can qualified discharge.
Through the processing of printing and dyeing wastewater processing equipment described in present embodiment, the surplus sludge volume of generation is few, can not establish settling tank, saves the occupation of land of settling tank.And can be used in combination with plant area other treatment process according to the principle of the shunting of removing contamination, be applicable to reconstruction, the enlarging in plant area's later stage.This also just means that the present invention not only can process engineering for newly-built high-concentration printing and dyeing wastewater, can also propose high-level enlarging to built printing and dyeing wastewater treatment system, there is the advantages such as technique is simple, with low cost, stable, effluent quality is good simultaneously.
The present invention also provides a kind of method that adopts printing and dyeing wastewater processing equipment to process waste water, be about to dyeing waste water and enter successively the equalizing tank 2 that catchments, advanced oxidation pond 4, biological composite reaction device 1, coagulation floatation 3 and upflow type aerating biological filter 5, by the directly discharge of tail water up to standard obtaining, reuse or further advanced treatment.
Waste water enters and catchments after equalizing tank 2, will carry out therein water quality and quantity adjusting, to reach the object of balanced water quantity and quality.From the water outlet of the equalizing tank 2 that catchments, by sewage pump, enter advanced oxidation pond 4.
In other embodiments, before waste water enters the equalizing tank 2 that catchments, also has a pre-treatment step, first with entering again the equalizing tank 2 that catchments after the impurity that in the grid filtration removal waste water of 5mm, particle is larger.In specific embodiment of the invention, can select pre-treatment step or omit pre-treatment step according to the practical situation of waste water.
Advanced oxidation pond 4 comprises oxidation zone 401, reduction zone 402, iron oxide precipitation district 403He pH regulator district 404.Waste water enters after oxidation zone 401, regulates pH value to 3.5-4.0, now in oxidation zone 401, adds Feton reagent (Fe
2+and H
2o
2the reagent forming) as strong oxidizer, and improve oxidation efficiency by aeration, make the small-molecule substance that the difficult degradation macromolecular substance oxygenolysis in waste water is easy degraded.In reduction zone, regulate the pH value of waste water to 8.0-8.5.In pH regulator district, regulate the pH to 7.0-8.0 of waste water.
In the alkali decrement destarch comprehensive wastewater that dyeing process produces, contain a large amount of hardly degraded organic substances, as terephthalic polyester, PVA, various auxiliary and fuel, therefore general biochemical treatment this type organic of cannot thoroughly degrading, this has also just increased the difficulty that waste water is further deepened processing.The present invention introduces advanced oxidation system in device, chemical substance to the difficult for biological degradation in alkali decrement destarch comprehensive wastewater is carried out strong oxide treatment, waste water after processing enters biological composite reaction device 1 again and processes, and so just can degrade and remove hardly degraded organic substances a large amount of in waste water.It is worth mentioning that, although facts have proved the biological process superpolymer compound of generally degrading, but the HRT(Hydraulic Retention Time needing, claim again hydraulic detention time, refer to that the mean residence time for the treatment of sewage in reactor is the average reaction time of microbial process in sewage and bio-reactor) very long.In the actual implementation process of technical scheme, in order to reduce the HRT of whole technique, physico-chemical process setting is necessary, with this, improves the processing efficiency of whole treatment process.
Described biological composite reaction device 1 comprises anaerobic baffled reaction zone 100, anaerobism return passage 101 and aerobic dynamic response district 102; The water inlet 103 of described biological composite reaction device 1 is located at anaerobic baffled reaction zone 100; The water outlet of anaerobic baffled reaction zone 100 is connected with the water inlet 103 of dynamic response anaerobism return passage 101, aerobic district 102, anaerobic baffled reaction zone 100 respectively.
Anaerobic baffled reaction zone 100 is positioned at the front end of biological composite reaction device 1, and the water inlet of whole biological composite reaction device 1 is also located at anaerobic baffled reaction zone water inlet 103.Anaerobic baffled reaction zone 100 is divided into four baffling chambers 105 by three partition walls 104.In other embodiments, the number of baffling chamber 105 can also be two, three, more than five or five.In baffling chamber 105, be vertically provided with water eliminator 106, make waste water upper and lower snakelike flowing in each baffling chamber 105.And in baffling chamber, inoculation has the active particle mud 107 that accounts for baffling chamber 105 useful volume 1/3-1/2.In other modes, can also inoculate the anaerobic grain sludge that accounts for baffling chamber 105 useful volume 1/3-1/2.
The water outlet of anaerobic baffled reaction zone 100 enters anaerobism return passage 101, and part effluent recycling is to baffling chamber 105, and another part enters aerobic dynamic response district 102.Described aerobic dynamic response district 102 is divided into the upper and lower difference UNICOM of the first compartment 108, the second compartment 109 and 110, three compartments of the 3rd compartment successively by two water eliminators 106; The second compartment 109 inoculations have 1/3-1/2 active particle mud 107; The second compartment 109 is provided with grid 111, top is provided with aerating system 112, by aeration water impact, make the flow direction of the second compartment 109 be positioned at the first compartment 108 and the 3rd compartment 110 of its both sides, form good closed cycle current fluidised form, under the current direction of the first compartment 108 and the 3rd compartment 110, on the current direction of the second compartment 109, so just, make active particle mud 107 form Biological expanded bed in the second compartment 109, there is higher aerobic dynamic response district 102 sludge concentrations and biochemical mass-transfer efficiency, guaranteed the high efficiency of biological composite reaction device 1.
The first compartment 108 and the 3rd compartment 110 are provided with pocket type membrane module 113.Described pocket type membrane module 113 comprises framework 114 and non-woven membrane 115, and in other embodiment, mould material can also be other cloth mould materials or other inexpensive films materials; The water-out manners of pocket type membrane module comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.Biological composite reaction device 1 in present embodiment combines Dynamic Membrane treatment technology in aerobic dynamic response district 102, apply the cheap mould materials such as non-woven fabrics and make packed membrane module, with the contrast of current dynamic film component, thus have advantages of that membrane flux is large, be difficult for film pollute, cheap, can run by gravity water outlet energy-saving and cost-reducing.Especially corresponding to the modal pollution problem of mould material, because active particle mud 107 is mainly inoculated in the second compartment 109, and the first compartment 108 of both sides and the sludge quantity of the 3rd compartment 110 are few, this film that has just extended to a great extent membrane module in the compartment of both sides pollutes the cycle.
In anaerobic baffled reaction zone 100, there is internal recycle and be provided with reflux pump 116 to control the upflow velocity in anaerobic baffled reaction zone 100, make upflow velocity in each baffling chamber 105 between critical fluidization velocity and go out between speed, wherein, critical fluidization velocity is the key parameter that fixed bed changes to fluidized-bed, and it is actually the minimum velocity that makes carrier granule fluidisation.The speed of going out is the speed that carrier granule flows out from fluidized-bed along with current.So, each baffling chamber 105 forms the structure of similar three-phase anaerobe fluidized-bed, impels the formation of active particle mud 107 in each baffling chamber 105, thereby improves the contaminant removal efficiency of anaerobic stages.In addition, in other embodiments, can also to reach the object that reclaims biogas bioenergy, in the recycling of energy, also there is significant advantage by the airtight Marsh gas collector that arranges in anaerobic baffled reaction zone 100.
In whole biological composite reaction device 1, have anaerobic type, oxygen-starved and the reaction of aerobic type concurrently, not only there is higher COD removal efficiency, also have the effect of good denitrogenation dephosphorizing simultaneously.
Water outlet from biological composite reaction device 1 continues to enter coagulation floatation 3 and processes.Particularly, coagulation floatation 3 comprises mixing pit and air flotation pool, water outlet dosing coagulant (PAC) and flocculation agent (PAM) in mixing pit first, and then water outlet enters air flotation pool by run by gravity, carries out coagulation air-float solid-liquid separation.Consequent mud can enter sludge treating system and process.
In the treating processes of coagulation floatation 3, coagulation air-float not only can be removed the most suspended substances in waste water, has the effect that reduces chroma in waste water simultaneously.In other embodiment, can also be in conjunction with the lower waste water treatment process of other Pollutant levels of printing and dyeing mill, the waste water of lower concentration is entered to the upflow type aerating biological filter 5 that enters again next step after coagulation floatation is processed and process.
In present embodiment, from the water outlet of coagulation floatation 3, continue to enter upflow type aerating biological filter 5 by pressure pump and process.The mode that enters water and effluent adopting bottom in and top out of upflow type aerating biological filter 5, biological filter water inlet 501 is located at the bottom of biological filter 5, and biological filter water outlet 502 is located at the top of biological filter 5.Except inlet and outlet system, biological filter 5 is also provided with biological filter aerating system 503 and back-purge system 504.In the middle of filter material layer 505 and filter plate 506, be provided with supporting layer 507, supporting layer 508 is that cobble or the magnetite that 5-20cm is high forms; Biological filter aerating system 503 is located in supporting layer 508, and in another embodiment, biological filter aerating system 504 can be located at the bottom of filter material layer 505.The optional material of filtrate is haydite, zeolite, expanded spheres clay, gac etc., and the particle diameter of filtrate is 2-5mm.The waste water that back-purge system 504 produces is processed the mixing pit being back in coagulation floatation 3.
Upflow type aerating biological filter 5 can be processed the waste water of underload, on the basis of aforesaid processing unit further to dyeing waste water decolour, denitrogenation, carbonization, guarantee that tail water can qualified discharge.
The Inlet and outlet water water quality comparing result of the waste water after method of wastewater treatment described in present embodiment is processed is as shown in the table:
Table 1 Inlet and outlet water water-quality guideline situation table look-up
Through the processing of printing and dyeing wastewater processing equipment described in present embodiment, the surplus sludge volume of generation is few, can not establish settling tank, saves the occupation of land of settling tank.And can be used in combination with plant area other treatment process according to the principle of the shunting of removing contamination, be applicable to reconstruction, the enlarging in plant area's later stage.This also just means that the present invention not only can process engineering for newly-built high-concentration printing and dyeing wastewater, can also propose high-level enlarging to built printing and dyeing wastewater treatment system simultaneously, have that technique is simple, capital construction and the advantage such as running cost is cheap, simple to operate, stable, floor space is little, effluent quality is good, anti-shock loading is strong, particularly for COD, ammonia nitrogen, the colourity of high density, can efficiently remove, realize the efficient processing of dyeing waste water.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification sheets of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. for a biological composite reaction device for treatment of dyeing wastewater, it is characterized in that, comprise anaerobic baffled reaction zone, anaerobism return passage and aerobic dynamic response district; The water inlet of described biological composite reaction device is located at anaerobic baffled reaction zone;
Described anaerobic baffled reaction zone is divided into two or more baffling chambers by partition wall, is vertically provided with water eliminator in baffling chamber, and in baffling chamber, inoculation has active sludge or the anaerobic grain sludge that accounts for baffling chamber useful volume 1/3-1/2.
2. biological composite reaction device as claimed in claim 1, is characterized in that, described aerobic dynamic response district is divided into the first compartment, the second compartment and the 3rd compartment successively by two water eliminators, and the upper and lower of three compartments is UNICOM respectively; The second compartment inoculation has 1/3-1/2 granule sludge; The second compartment is provided with grid, and top is provided with aerating system; The first compartment and the 3rd compartment are provided with pocket type membrane module.
3. biological composite reaction device as claimed in claim 2, is characterized in that, described pocket type membrane module comprises framework and mould material, and described mould material comprises cloth mould material; Pocket type membrane module bottom is provided with water outlet, and water-out manners comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.
4. a printing and dyeing wastewater processing equipment, is characterized in that, comprises the equalizing tank that catchments, advanced oxidation pond, biological composite reaction device, coagulation floatation and upflow type aerating biological filter;
Described biological composite reaction device comprises anaerobic baffled reaction zone, anaerobism return passage and aerobic dynamic response district; The water inlet of described biological composite reaction device is located at anaerobic baffled reaction zone;
Described anaerobic baffled reaction zone is divided into two or more baffling chambers by partition wall, is vertically provided with water eliminator in baffling chamber, and in baffling chamber, inoculation has 1/3-1/2 active sludge or anaerobic grain sludge.
5. printing and dyeing wastewater processing equipment as claimed in claim 4, is characterized in that, described aerobic dynamic response district is divided into the first compartment, the second compartment and the 3rd compartment successively by two water eliminators, and the upper and lower of three compartments is UNICOM respectively; The second compartment inoculation has 1/3-1/2 granule sludge; The second compartment is provided with grid, and top is provided with aerating system; The first compartment and the 3rd compartment are provided with pocket type membrane module;
Described pocket type membrane module comprises framework and mould material, and described mould material comprises cloth mould material; Pocket type membrane module bottom is provided with water outlet, and water-out manners comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet.
6. the printing and dyeing wastewater processing equipment as described in claim 4 or 5, is characterized in that, the water inlet of described upflow type aerating biological filter and water outlet are located at respectively bottom and the top of described upflow type aerating biological filter; Described upflow type aerating biological filter is provided with filter material layer and filter plate, and the filtrate material of filter material layer comprises haydite, zeolite, expanded spheres clay or gac, and the particle diameter of filtrate is 2-5mm;
In the middle of filter material layer and filter plate, be provided with supporting layer, supporting layer comprises cobble or the magnetite that 5-20cm is high; Described upflow type aerating biological filter is also provided with back-purge system and aerating system, and aerating system is located at filter material layer bottom or supporting layer.
7. a treatment method of printing and dying wastewater, is characterized in that, comprises step:
Waste water enters in the equalizing tank that catchments to carry out water quality and quantity adjusting;
Waste water enters advanced oxidation pond to carry out oxidizing reaction;
Waste water enters biological composite reaction device and carries out pollutant removal;
Waste water enters coagulation floatation and processes;
Waste water enters upflow type aerating biological filter and processes;
By directly discharge of the tail water obtaining, reuse or advanced treatment;
Wherein, described biological composite reaction device comprises anaerobic baffled reaction zone, anaerobism return passage and aerobic dynamic response district; The water inlet of described biological composite reaction device is located at anaerobic baffled reaction zone;
Described anaerobic baffled reaction zone is divided into two or more baffling chambers by partition wall, is vertically provided with water eliminator in baffling chamber, and in baffling chamber, inoculation has 1/3-1/2 active sludge or anaerobic grain sludge.
8. treatment method of printing and dying wastewater as claimed in claim 7, is characterized in that, also comprises pre-treatment step before waste water enters the equalizing tank that catchments: with the grid filtration of 5mm, remove the large granular impurity in waste water;
Described advanced oxidation pond comprises oxidation zone, reduction zone, iron oxide precipitation district and pH regulator district;
Waste water enters after oxidation zone, regulates wastewater pH to add strong oxidizer and carry out Air Exposure to 3.5-4.0;
Waste water enters behind reduction zone, regulates wastewater pH to 8.0-8.5;
Waste water enters behind pH regulator district, regulates wastewater pH to 7.0-8.0.
9. treatment method of printing and dying wastewater as claimed in claim 7 or 8, is characterized in that, described aerobic dynamic response district is divided into the first compartment, the second compartment and the 3rd compartment successively by two water eliminators, and the upper and lower of three compartments is UNICOM respectively; The second compartment inoculation has 1/3-1/2 granule sludge; The second compartment is provided with grid, and top is provided with aerating system, makes on the current direction of the second compartment, under the current direction of the first compartment and the 3rd compartment by aeration water impact;
The upflow velocity of controlling current by reflux pump in anaerobic baffled reaction zone is between critical fluidization velocity and go out between speed;
The first compartment and the 3rd compartment are provided with pocket type membrane module; Described pocket type membrane module comprises framework and mould material, and described mould material comprises cloth mould material; Pocket type membrane module bottom is provided with water outlet, and water-out manners comprises that run by gravity water outlet, negative pressure water outlet or run by gravity are in conjunction with negative pressure water outlet;
From the water outlet whereabouts of anaerobic baffled reaction zone, comprise: be back to baffling chamber; Enter aerobic dynamic response district; Enter anaerobism return passage.
10. treatment method of printing and dying wastewater as claimed in claim 7 or 8, is characterized in that, the water inlet of described upflow type aerating biological filter and water outlet are located at respectively bottom and the top of described upflow type aerating biological filter; Described upflow type aerating biological filter is provided with filter material layer and filter plate, and the filtrate material of filter material layer comprises haydite, zeolite, expanded spheres clay or gac, and the particle diameter of filtrate is 2-5mm;
In the middle of filter material layer and filter plate, be provided with supporting layer, supporting layer comprises cobble or the magnetite that 5-20cm is high;
Described upflow type aerating biological filter is also provided with aerating system, and aerating system is located at filter material layer bottom or supporting layer;
Upflow type aerating biological filter is also provided with back-purge system; The waste water that back flushing produces is back to coagulation floatation and processes.
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| CN102674636A (en) * | 2012-05-29 | 2012-09-19 | 东华大学 | Dynamic combined reaction device for biological treatment of printing and dyeing wastewater |
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| CN102627350A (en) * | 2012-03-30 | 2012-08-08 | 东华大学 | Non-woven fabric dynamic membrane bioreactor for printing and dyeing waste water treatment |
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