CN201317703Y - Biological aerated filter used for printing and dyeing wastewater advanced processing device - Google Patents

Biological aerated filter used for printing and dyeing wastewater advanced processing device Download PDF

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Publication number
CN201317703Y
CN201317703Y CNU200820171014XU CN200820171014U CN201317703Y CN 201317703 Y CN201317703 Y CN 201317703Y CN U200820171014X U CNU200820171014X U CN U200820171014XU CN 200820171014 U CN200820171014 U CN 200820171014U CN 201317703 Y CN201317703 Y CN 201317703Y
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biological
aerated filter
filter
biological aerated
baf
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Expired - Fee Related
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CNU200820171014XU
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陶星名
王宇峰
孙建平
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陶星名
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The utility model relates to a biological aerated filter used for a printing and dyeing wastewater advanced processing device. An emptying pipe is arranged at the lower part of a base of the biological aerated filter, and a filtration head is installed between the upper part of the base of the biological aerated filter and a biological aerated filter cylinder. A water storage tank and a backwashing water tank are respectively jointed from the lower part of the base of the biological aerated filter through pumps. After an air pump is connected with a microporous aerator, the microporous aerator is installed at the lower part of the biological aerated filter cylinder, above the filtration head. A filling layer is arranged in the biological filter cylinder and a water outlet and a backwashing water outlet are arranged at the upper part of the biological filter cylinder. By taking the fillings filled in the biological aerated filter and the biological films adhered on the biological aerated filter as the processing media, the printing and dyeing wastewater advanced processing device makes full use of the biological metabolism, the physical filtration, the physical adsorption of the films and the fillings, and the multilevel food predation of the organisms in the reactor to remove various contaminants in the printing and dyeing wastewater in the reactor. The biological aerated filter has the advantages of high processing efficiency, strong shock resistance, small occupying area and stable and reliable performance. Therefore, the biological aerated filter is applicable in printing and dyeing wastewater advanced processing field.

Description

A kind of BAF is used for advanced treatment apparatus for printing and dyeing wastewater
Technical field
The utility model relates to the treatment unit of waste water, particularly relates to a kind of BAF and is used for advanced treatment apparatus for printing and dyeing wastewater.
Background technology
China is the country of a water resources shortage, and water resources accounts at amount 2500m per capita 3, be 1/5 of world's per capita share, along with socioeconomic fast development, the contradiction of lack of water is on the rise.And China's wateruse quota is higher, and ten thousand yuan of industrial added value water withdrawals are 5~10 times of developed country, and the service water reclamation rate is lower than 30%, and water treatment and water use efficiency technology all fail to reach the level of medium-developed country.Dyeing is " can water consumption consumption rich and influential family ", accounts for 35% of trade effluent, and 90% as discharge of wastewater, has that water displacement is big, pollutant component is complicated, water quality and quantity changes fast, characteristics such as biodegradability is poor, colourity height.Therefore, dyeing waste water is carried out advanced treatment and is back to use production workshop section, can save a large amount of fresh water consumptions on the one hand, also directly reduced simultaneously the quantity discharged of contaminated wastewater thing, not only dyeing being realized that Sustainable development has important promotion meaning, also is whole society's water saving, an urgent demand that realizes energy-saving and emission-reduction.
At present, the advanced treatment for dyeing waste water mainly contains chemical method, physics method, biological process three major types method.Chemical method comprises photochemical oxidation, ozone oxidation, electrochemical oxidation etc., though these methods have obtained good effect at advanced treatment of dyeing wastewater, but because the restriction of factor such as processing cost, energy consumption be big, these new technologies do not obtain popularization in the dyeing waste water advanced treatment.Physical method comprises charcoal absorption, resin absorption, membrane sepn etc., and the absorption method cost is lower, but the saturated cycle is short, and the regenerated cost is big; The membrane separation process investment is high, the life-span is short, and to the water quality requirement height, film stops up easily, not easy cleaning.
Biological process is to be rule with the natural, ecological, by domestication's biological bacteria, utilize site conditions such as temperature, air, nutrition to realize the purifying treatment of pollutent, therefore biochemical process is a kind of comparatively cheap water treatment method, is widely used in the treatment of dyeing wastewater that actual amount of water is big, change of water quality is big.With the biological process treatment technology is that the BAF of core is the research focus of wastewater treatment in recent years, it with biomembrance process and activated sludge process in one, have oxidation degradation and carry the dual-use function that stays SS, effluent quality is good, big, little, the strong shock resistance of pond body bulk of processing load, therefore has broad application prospects in dyeing waste water advanced treatment field.
Summary of the invention
The purpose of this utility model is to provide a kind of BAF to be used for advanced treatment apparatus for printing and dyeing wastewater, can in same unitary reactor, realize processes such as carbonization, nitrated, denitrogenation, dephosphorization, pollutents such as SS, the COD in effectively removing in the low concentration wastewater, BOD.
The technical solution adopted in the utility model is:
The utility model comprises water tank, back flushing water tank, intake pump, backwash pump, filter, flange, micro-hole aerator, aeration and biological filter cylinder, air pump, BAF base; BAF base bottom connects blow-down pipe, between BAF base top and the aeration and biological filter cylinder bottom filter is installed, and connects into an integral body with flange; Water tank inserts from BAF base bottom with same water inlet pipe through backwash pump through intake pump and back flushing water tank; Air pump is installed in aeration and biological filter cylinder bottom with after micro-hole aerator is connected with micro-hole aerator, and is positioned at the filter top; In the aeration and biological filter cylinder packing layer is housed, aeration and biological filter cylinder top sets out the mouth of a river and back flushing water outlet.
This method may further comprise the steps:
1) at first pretreated biochemical waste water is pumped into cloth pool, BAF bottom, by filter realization water distribution uniformity from bottom to top;
2) the step 1) water outlet enters the aeration layer, and micro-hole aerator is positioned at the filter top, provides microbial metabolism required oxygen;
3) step 2) water outlet enters packing layer, and packing layer is positioned at the micro-hole aerator top, and two-layer about dividing, lower floor is irregular haydite in small, broken bits, and the upper strata is the spherical particle haydite; In packing layer, waste water with carry out metabolic reaction attached to the lip-deep microbial film of haydite, water quality is further purified, and forms clear water zone on packing layer top;
4) step 3) water outlet, water storage pond in entering, by pump delivery to each production workshop section water spot;
5) can also be to packing layer being carried out air-water associating back flushing.
The step of packing layer being carried out air-water associating back flushing is:
A) select for use pressurized air to carry out back flushing;
B) restart backwash pump, air water back flushing simultaneously;
C) use water backwashing at last again.
Compare with background technology, the beneficial effect that the utlity model has is:
1) filter material layer to traditional BAF improves, and filter material layer is divided into two-layer up and down, and lower floor is the irregular broken shape ceramic grain filter of particle diameter 3mm~10mm, and the upper strata is particle diameter 10mm~15mm spherical particle ceramic grain filter.Lower floor's filtrate has advantages such as particle is little, surface-area is big, expense is cheap, is fit to very much inoculation, domestication, the breeding growth of microorganism; The upper strata filtrate has uniform particles, than great, characteristics such as quality is hard, be difficult for fragmentation, good filtration effect, and anti-flushing, do not stop up, hydraulic performance is good, can prevent preferably that bubble from washing away the loss that causes under-nutrition or long and poky biomass of microbial metabolism phase, make the filler in the whole oxidation pond can both form the high-activity biological film, reach the purpose that pollutent is efficiently handled;
2) aeration process forms big water circulation mixing effect, dilute the Pollutant levels of water inlet rapidly, prevent the too high detrimentally affect that causes of local pollution substrate concentration, the opposing of raising system is because of the impact of water inlet Pollutant levels fluctuation to biological oxidation process, it is strong to have anti-load impact, the feature that operational administrative is easy;
3) adopt this method and apparatus can in same unitary reactor, realize processes such as carbonization, nitrated, denitrogenation, dephosphorization, pollutents such as SS, the COD in effectively removing in the low low concentration wastewater, BOD, bio-oxidation be will collect and suspended solids and one held back, saved follow-up second pond, its volumetric loading height, hydraulic load are big, hydraulic detention time is short, and required initial cost is few, and floor space is little;
4) adopt the combined water and air backwash technology, not only backwash effect is good, prolongs backwashing period, and saves the back flushing water yield 40%~60% than existing simple water flushing, reduces cost;
5) technology utilization the filtrate of BAF inner filling and the microbial film of apposition growth thereof be treatment media, characteristics such as the high and low energy consumption of biologically active, residual contamination amount are few, stable can effectively be controlled deficiencies such as the incident thread fungus of activated sludge process advanced treatment of dyeing wastewater is expanded, the mud generation is big.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present utility model.
Fig. 2 is that flange is connected enlarged diagram with filter.
Among the figure: 1, water tank, 2, the back flushing water tank, 3, intake pump, 4, backwash pump, 5, blow-down pipe, 6, water inlet pipe, 7, filter, 8, flange, 9, micro-hole aerator, 10, the aeration and biological filter cylinder, 11, water outlet, 12, back flushing water outlet, 13, air pump, 14, the BAF base.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1 and Figure 2, the utility model comprises water tank 1, back flushing water tank 2, intake pump 3, backwash pump 4, filter 7, flange 8, micro-hole aerator 9, aeration and biological filter cylinder 10, air pump 13, BAF base 14; BAF base 14 bottoms connect blow-down pipe 5, and filter 7 is installed between BAF base 14 tops and aeration and biological filter cylinder 10 bottoms, connect in aggregates with flange 8; Water tank 1 inserts from BAF base 14 bottoms through same water inlet pipe 6 of backwash pump 4 usefulness through intake pump 3 and back flushing water tank 2; Air pump 13 is installed in aeration and biological filter cylinder 10 bottoms with micro-hole aerator 9, and is positioned at filter 7 tops with after micro-hole aerator 9 is connected; In the aeration and biological filter cylinder 10 packing layer is housed, aeration and biological filter cylinder 10 tops set out the mouth of a river 11 and back flushing water outlet 12.
The particle diameter of the ceramic grain filter of described packing layer is 3mm~10mm, and the particle diameter of spherical ceramic grain filter is 10mm~15mm, and the specification of two-layer filtrate is: tap density 0.70-0.90g/cm 3, degree of fragmentation<0.05%, specific surface area>4.8cm 2/ g, porosity 30%-40%, wear rate<5.3%, hydrochloric acid soluble rate<0.5%.
Principle of work of the present utility model is as follows:
The utility model is with a kind of BAF dyeing waste water to be carried out advanced treatment, and its process unit as shown in Figure 1.This technology is as follows: dyeing waste water at first pumps into BAF base 14 cloth pools after pre-treatment, by strainer head 7 realizations water distribution uniformity from bottom to top; Water outlet enters the aeration layer, provides microbial metabolism required oxygen by variable micro-hole aerator 9; Water outlet enters packing layer, and packing layer divides two-layer up and down, and a of lower floor is irregular haydite in small, broken bits, and upper strata b is the spherical particle haydite; In packing layer, waste water with carry out metabolic reaction attached to the lip-deep microbial film of haydite, and make water quality further be purified by the physical filtering effect of haydite, form clear water zone c on packing layer top; Enter middle water storage pond by sewage outlet 11, by the use water spot of pump delivery to each production workshop section.Gas one water associating back flushing is adopted in the back flushing of BAF, method is: the pressurized air 13 that provides with roots blower earlier carries out 3~5min back flushing, restart backwash pump 4, air water back flushing simultaneously 3~5min, use water backwashing 5~10min at last again, the middle water that backwash water adopts BAF water outlet 12 to enter stores up the water in the pond; Impurity such as the microbial film that back flushing comes off, mud to preliminary sedimentation tank, and are pressed into mud cake outward transport through sludge thickener, plate-and-frame filter press with back flushing draining 12, and concentration basin concentrated solution, plate-and-frame filter press pressing filtering liquid are got back to pump well.Backwashing period is 2d~3d, and water is 5L/ (m towards intensity 2S)~7L/ (m 2S), gas is 13L/ (m towards intensity 2S)~17L/ (m 2S).
Packing layer divides two-layer up and down, and a of lower floor is irregular haydite in small, broken bits, and the particle diameter of ceramic grain filter is 3mm~10mm, has advantages such as particle is little, surface-area is big, expense is cheap, is fit to inoculation, domestication, the breeding growth of microorganism; Upper strata b is the spherical particle haydite, and the particle diameter of spherical ceramic grain filter is 10mm~15mm, has uniform particles, than great, characteristics such as quality is hard, be difficult for fragmentation, good filtration effect, and anti-flushing, does not stop up, and hydraulic performance is good; The specification of two-layer filtrate is: tap density 0.70-0.90g/cm 3, degree of fragmentation<0.05%, specific surface area>4.8cm 2/ g, porosity 30%-40%, wear rate<5.3%, hydrochloric acid soluble rate<0.5%.The filling ratio of two-layer filtrate is preferably 3: 7 up and down.
The aerating apparatus of aeration biological filter device preferably adopts aerator, aeration tube and outer air duct to connect and compose, aerator is between packing layer and cloth pool, preferred variable micro porous aeration head, the aeration head diameter is about 70%~80% of BAF diameter, be connected with aeration tube, aeration tube is connected with outer air duct.
During the BAF maintenance, can utilize waste water in the blow-down pipe emptying apparatus of bottom, open central flange, carry out maintenance maintenance.
That adopt in test is planar dimension diameter D=300mm, overall height H bThe circular BAF of=2000mm, cloth pool height H 1=250mm, the aeration zone height H 2=250mm, bed stuffing height H 3=1000mm (comprising the broken shape haydite filter of not planning of the bed stuffing height a=700mm of lower floor grain district, the spherical particle ceramic grain filter district of upper strata bed stuffing height b=300mm), clear water zone c=500mm (comprises clear water drained zone height H 4=400mm, superelevation H 5=100mm).When sludge loading is 4.0kgCODcr/ (kgMLSSd), filter is provided with 5, filtering velocity 1.0m 3/ (hm 2), gas-water ratio 4: 1 o'clock, the COD in its centering concentration dyeing waste water Cr, SS, colourity average removal rate reach 60%, 90% and 85% respectively, can be with the COD in the dyeing waste water Cr, SS, colourity from 225mg/L, 300mg/L, 50 times reduce to 50mg/L, 10mg/L, below 5 times, satisfy the printing-dying wastewater recycling requirement.
Micro-hole aerator of the present utility model and filter all can be chosen on market
Table 1 adopts several embodiment of these apparatus and method treatment of dyeing and printing

Claims (2)

1, a kind of BAF is used for advanced treatment apparatus for printing and dyeing wastewater, it is characterized in that: comprise water tank (1), back flushing water tank (2), intake pump (3), backwash pump (4), filter (7), flange (8), micro-hole aerator (9), aeration and biological filter cylinder (10), air pump (13), BAF base (14); BAF base (14) bottom connects blow-down pipe (5), between BAF base (14) top and aeration and biological filter cylinder (10) bottom filter (7) is installed, and connects in aggregates with flange (8); Water tank (1) inserts from BAF base (14) bottom with same water inlet pipe (6) through backwash pump (4) through intake pump (3) and back flushing water tank (2); Air pump (13) is installed in aeration and biological filter cylinder (10) bottom with after micro-hole aerator (9) is connected with micro-hole aerator (9), and is positioned at filter (7) top; The aeration and biological filter cylinder is equipped with packing layer in (10), and aeration and biological filter cylinder (10) top sets out the mouth of a river (11) and back flushing water outlet (12).
2, a kind of BAF according to claim 1 is used for advanced treatment apparatus for printing and dyeing wastewater, it is characterized in that: the particle diameter of the ceramic grain filter of described packing layer is 3mm~10mm, the particle diameter of spherical ceramic grain filter is 10mm~15mm, and the specification of two-layer filtrate is: tap density 0.70-0.90g/cm 3, degree of fragmentation<0.05%, specific surface area>4.8cm 2/ g, porosity 30%-40%, wear rate<5.3%, hydrochloric acid soluble rate<0.5%.
CNU200820171014XU 2008-12-18 2008-12-18 Biological aerated filter used for printing and dyeing wastewater advanced processing device Expired - Fee Related CN201317703Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765855A (en) * 2012-07-16 2012-11-07 煤炭工业济南设计研究院有限公司 Coating wastewater processing method and device
CN104829037A (en) * 2015-03-13 2015-08-12 中国海洋石油总公司 Combined process method of deep treatment of oil refinery waste water
CN111422975A (en) * 2020-04-10 2020-07-17 浙江工业大学 Method and device for removing nitrogen and phosphorus from town sewage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765855A (en) * 2012-07-16 2012-11-07 煤炭工业济南设计研究院有限公司 Coating wastewater processing method and device
CN102765855B (en) * 2012-07-16 2014-07-23 煤炭工业济南设计研究院有限公司 Coating wastewater processing method and device
CN104829037A (en) * 2015-03-13 2015-08-12 中国海洋石油总公司 Combined process method of deep treatment of oil refinery waste water
CN111422975A (en) * 2020-04-10 2020-07-17 浙江工业大学 Method and device for removing nitrogen and phosphorus from town sewage

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090930

Termination date: 20111218

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