CN204385029U - A kind of advanced treatment of wastewater bacteria filter device system - Google Patents
A kind of advanced treatment of wastewater bacteria filter device system Download PDFInfo
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- CN204385029U CN204385029U CN201420854516.8U CN201420854516U CN204385029U CN 204385029 U CN204385029 U CN 204385029U CN 201420854516 U CN201420854516 U CN 201420854516U CN 204385029 U CN204385029 U CN 204385029U
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Abstract
The utility model relates to a kind of advanced treatment of wastewater bacteria filter device system, comprises biological filter, sewage and ozone supply system, back-flushing plenum system, recoil air supply system and outlet system; The open top of described biological filter, inside is provided with overflow chamber, catalyzed oxidation floor, filter material layer and water and air distributing room from top to bottom successively; The bottom of described catalyzed oxidation layer is provided with water distribution uniformity gas pipe; Filtrate back up pad is provided with between described filter material layer and described water and air distributing room; Described filtrate back up pad is fixed with strainer head; This apparatus system effectively can decompose the Persistent organic pollutants after the industry secondary biochemicals such as petrochemical complex and relative to existing ozonation aerated mode, there is the advantage of short mix and efficient catalytic, effectively can reduce water producing cost, and the remaining oxygen after can effectively utilizing residual ozone to decompose, reduce plant running energy consumption.
Description
Technical field
The utility model relates to a kind of advanced treatment of wastewater bacteria filter device system, belongs to sewage treatment area.
Background technology
Along with the increase of environmental consciousness, the requirement of local government to environmental protection is more and more higher, higher pollutant emission standard is proposed to sewage farm sewage receiving water body, more upgrade to one-level emission standard A in recent years for some importance basin, it is more harsh that part index number (as hardly degraded organic substance accounting COD) removes requirement.
The Persistent organic pollutants of the industries such as petrochemical complex after secondary biochemical (dissolved organic matter that can not be biochemical) are difficult to remove, and easily enrichment in vivo, become discharge water body potential pollution source, if reuse is to producing, easily organic contamination is caused to reuse water treatment system, and then reduce its work-ing life.
Meanwhile, due to the change of the production technique aspects such as petroleum chemical industry, and the raising of similar industry sewage reclamation rate, the stably manufactured pressure of Sewage treatment systems is larger.
About ozone oxidation: O
3there is extremely strong oxidation susceptibility, and can disintegrate in the short period of time in water, non-secondary pollution is desirable green oxidation medicament.O
3can be easily biodegradable organics by hardly degraded organic substance oxygenolysis in water, and can oxygenolysis be CO further
2, H
2the simple inorganics such as O, O simultaneously
3stronger oxidative decomposition capacity is had to colourity class material in water.
Mix about ozone: the rapid reaction that ozonization method water treatment procedure can be divided into mass transfer velocity to control and the slow reaction process that chemical reaction velocity controls.For mass transfer velocity Control Cooling, generally emphasize air-water contact solute effect, the directly contact reactor such as micro-hole aerator, Venturi ejector, ozone mixing pump, turbine injector can be adopted.For chemical reaction velocity Control Cooling, generally emphasize oxidation reaction process, indirect contact reactor and the multi-point adding mode such as packing tower, tubular type contactor can be adopted.According to existing engineering experience, because concentration organic in sewage is all higher, generally in sewage disposal, the treating processes of ozone belongs to mass transfer velocity Control Cooling.
About biological filter: the mentality of designing fully using for reference sewage disposal contact oxidation method and feedwater rapid filter, is incorporated in biological degradation and adsorption filtration two kinds for the treatment of processess in same unitary reactor.With the particulate filler loaded in filter tank (as haydite, coke, quartz sand, gac etc.) be carrier, aeration is carried out in inside, filter tank, filter material surface is grown large number of biological film, when effluent stream through time, to utilize on filtrate the living microorganism Strong oxdiative Decomposition of appended microbial film middle and high concentration and the less feature of particle diameter of filter medium, give full play to the biological metabolism of microorganism, biofloculation, the physical adsorption of microbial film and filler and retain and in reactor along the classification predation of water (flow) direction food chain, the high-efficient cleaning realizing pollutent removes, utilize in reactor aerobic simultaneously, the existence of anoxic zones, realize the function of denitrogenation dephosphorizing.
Because of O
3preparation cost is higher, is usually applied to Water purification or the advanced treatment of wastewater of micro polluted source, and is combined to form O with biological filtering tank process
3-biological filter combination process, comprehensive O
3oxidation, filtrate absorption, biological degradation function, in one, realize the process of polluted-water economical and efficient.
Utility model content
The purpose of this utility model is the defect overcoming prior art, a kind of advanced treatment of wastewater bacteria filter device system and treatment process are provided, effectively can decompose the Persistent organic pollutants after the industry secondary biochemicals such as petrochemical complex and relative to existing ozonation aerated mode, there is the advantage of short mix and efficient catalytic, effectively can reduce water producing cost, and the remaining oxygen after can effectively utilizing residual ozone to decompose, reduce plant running energy consumption.
A kind of advanced treatment of wastewater bacteria filter device system, comprises a biological filter; The open top of described biological filter, inside is provided with overflow chamber, catalyzed oxidation floor, filter material layer and water and air distributing room from top to bottom successively; The bottom of described catalyzed oxidation layer is provided with water distribution uniformity gas pipe; Filtrate back up pad is provided with between described filter material layer and described water and air distributing room; Described filtrate back up pad is fixed with strainer head;
The pool wall of described overflow chamber is provided with overflow outlet; Described water distribution uniformity gas pipe is provided with air water import; The pool wall of described water and air distributing room is provided with liquid entrance and back flushing air import;
Liquid entrance on the pool wall of described water and air distributing room is connected through pipeline with fresh water feed conduit, and on connection line, be provided with back-flushing variable valve; Described liquid entrance is also connected through pipeline with measuring apparatus, and is provided with out water regulating valve on connection line;
Sewage storage tank, lift pump, ozone generating-device, Liqiud-gas mixing device and air compressor is provided with outside described biological filter;
Described sewage storage tank is provided with sewage outlet; Described lift pump is provided with import and outlet; Described ozone generating-device is provided with ozone outlet; Described Liqiud-gas mixing device is provided with liquid-inlet, gas feed and gas-liquid mixed export; The sewage outlet of described sewage storage tank is connected through pipeline with the import of described lift pump, and control valve be provided with pump on connection line before; Described lifting pump outlet is connected through pipeline with the liquid-inlet of described gas liquid mixer; The ozone outlet of described ozone generating-device is connected through pipeline with the gas feed of described gas liquid mixer; The gas-liquid mixed outlet of described gas liquid mixer is connected through pipeline with the air water import of described water distribution uniformity gas pipe;
Described air compressor is provided with compressed gas outlet; The compressed gas outlet of described air compressor is connected through pipeline with the back flushing air import on the pool wall of described water and air distributing room, and on connection line, be provided with back flushing air variable valve;
In described a kind of advanced treatment of wastewater bacteria filter device system-based, the present invention further provides a kind of advanced treatment of wastewater biological filter treatment process, comprise the following steps:
(1) start lift pump, the catalyzed oxidation layer entered after the distribution of water distribution uniformity gas pipe by the sewage in sewage storage tank, and flow through filter material layer and carry out contact oxidation filtration; Then water and air distributing room is entered by filtrate back up pad; Liquid level in biological filter reaches overflow outlet on overflow chamber's pool wall when carrying out overflow, then opens to be located at water and air distributing room pool wall goes out water regulating valve, and water outlet is outer row after measuring apparatus metering; And by variable valve before regulating the pump before being located at lift pump and described go out water regulating valve make the level stability of biological filter;
(2) after normal operation, open ozone generating-device, ozone and the sewage from sewage storage tank are formed together with gas-liquid mixture by Liqiud-gas mixing device short mix and enter catalyzed oxidation layer after water distribution uniformity gas pipe distribute, ozone produces a large amount of hydroxyl radical free radicals in catalyzed oxidation layer, play the effect of oxide treatment hardly degraded organic substance, and residual ozone is fully decomposed by carrying out chemical reaction with catalyzed oxidation layer;
(3) run after for some time, back flushing is carried out to biological filter, retain pollutent to remove in biological filter: utilize fresh water as back-flushing, and adopt air compressor to provide back flushing air; First close lift pump, ozone generating-device and go out water regulating valve, then unlatching back-flushing intake valve and back flushing air variable valve carry out to biological filter the back flushing that gas punching, aqueous vapor punching and water rush three phases successively stage by stage; Back flushing air enters from the water and air distributing room of biological filter, discharges after flowing through filtrate back up pad, filter material layer and catalyzed oxidation layer from the bottom to top from top, biological filter; Back-flushing then enters from the water and air distributing room of biological filter, discharges after flowing through filtrate back up pad, filter material layer and catalyzed oxidation layer from the bottom to top from the overflow outlet overflow chamber's pool wall;
Wherein,
Preferably, gac is filled in described catalyzed oxidation layer, particle diameter 3 ~ 4mm, density 0.45 ~ 0.55g/cm
3, specific surface area 800 ± 50m
2/ g, iodine sorption value 800 ~ 850mg/g.
Preferably, gac is filled in described filter material layer, particle diameter 3 ~ 4mm, density 0.45 ~ 0.55g/cm
3, specific surface area 800 ± 50m
2/ g, iodine sorption value 800 ~ 850mg/g.
Preferably, the total height 3.8-5.8m of described biological filter, the height of catalyzed oxidation layer is 0.45-0.6m, and the height of filter material layer is 2-4m.
Preferably, the described water distribution uniformity gas pipe Duo Gen branch distribute water and air pipe that comprises horizontally disposed arterial highway distribute water and air pipe and be connected with described arterial highway distribute water and air pipe; Described branch distribute water and air pipe is arranged symmetrically in distribute water and air pipe both sides, described arterial highway.
Described arterial highway distribute water and air pipe exports with the gas-liquid mixed of described gas liquid mixer and is connected through pipeline; Described branch distribute water and air pipe is provided with distribution hole.
Preferably, described distribution hole staggered arrangement on described branch's distribute water and air pipe both sides obliquely tube wall of 45 °.
Preferably, the caliber of shown branch distribute water and air pipe is 25-80mm; The aperture 3-4mm of described distribution hole.
Preferably, described filtrate back up pad is centrally symmetrically distributed with multiple perforate, described perforate is provided with strainer head; Described strainer head comprises filter cap and filter handle; Filter cap and filter handle are hollow structure; Described filter cap is positioned at described filter material layer, filter cap top seal, and side is distributed with multiple filter seam, and bottom is connected with described filter handle; The bottom end opening of described filter handle, and it is indoor to insert described water and air distributing.
The sewage of filter material layer enters water and air distributing room from the filter seam on the strainer head filtrate back up pad; The back-flushing of water and air distributing indoor or back flushing air then enter filter material layer from the gap of described strainer head.
Preferably, the cross section of described filter cap is circular, and vertical section is trapezoidal, high 25-40mm; Described filter seam shape is wedge shape; Filter seam width 2 ± 0.1mm; The length of described filter handle is 225-350mm.
Preferably, the filter seam total area in described filtrate back up pad and the area ratio of filtrate back up pad are 0.01-0.025:1.
Preferably, described Liqiud-gas mixing device is Venturi fluidic device; The gas-liquid mixed export pipeline of described Venturi fluidic device is connected with check valve.
Preferably, the pool wall of described filter material layer is provided with multiple thief hole from top to bottom; Described thief hole is connected with sampling valve.
Preferably, the pool wall of described water and air distributing room is also provided with drain; Described drain is connected with blow-off valve.
Preferably, described sewage storage tank is provided with wastewater inlet; Described wastewater inlet is connected through pipeline with sewer line; The top of described sewage storage tank is also provided with overflow port, for controlling the water level in sewage storage tank.
Preferably, the overflow of described overflow chamber exports and is connected with overflow variable valve.When system is normally run, the constant of liquid level in biological filter can be ensured, when back flushing, then as the relief outlet of back-flushing.
Preferably, described measuring apparatus is spinner-type flowmeter or magnetic flow meter.
Preferably, described ozone generating-device is oxygen source ozone producer or air source ozone producer.
Preferably, described back-flushing intensity is 5-8L/s.m
2.
Preferably, the intensity of described back flushing air is 10-15L/s.m
2.
Preferably, described gas rushes time length 5-10 minute; It is 5-10 minute that described air water rushes the time length; It is 5-10 minute that described water rushes the time length.
Preferably, described ozone dosage is 20 ~ 30mg/L.Namely relative to the ozone quality that often liter of sewage charging adds.
Preferably, the hydraulic detention time of described biological filter is 1-2h, volumetric loading 1.2-2kgCOD/m
3.d.
Wherein, the method for calculation of described volumetric loading:
Volumetric loading method:
Volume V=(S
a-S
e) * Q/N
v;
In formula: S
a: water inlet Pollutant levels (mg/L);
S
e: water outlet Pollutant levels (mg/L);
Q: flooding velocity (m
3/ d);
N
v: volumetric loading (kg pollutent/m
3.d).
Compared with prior art, the utility model has following distinguishing feature:
(1) biological filter is provided with catalyzed oxidation layer, ozone and the mixed residual ozone of waste water can be reduced on the impact of filter material layer microorganism, strengthen biological filter microbic activity, ensure the stability of system cloud gray model, improve ozone utilising efficiency, energy efficient simultaneously;
(2) bottom biological filter, aerating system is not set, utilize the remaining oxygen supply microbe survival demand after ozone reaction, oxygen supply energy consumption (comparatively conventional aeration biological filter energy consumption reduces about 20%) greatly can be reduced while ensureing treatment effect, save the Operation and Maintenance of aerating system, operation management is also more easy;
(3) utilize the catalytic activation of gac/ozone to act synergistically in biological filter, can obtain better O3 catalytic oxidation effect, accelerate ozone is to oxygenizement organic in waste water;
(4) in biological filter, water distribution uniformity gas pipe is arranged on bottom catalyzed oxidation layer, and brings out stream upward, makes whole catalyzed oxidation layer current be complete mixing pattern, further strengthens the Quick Oxidation effect of ozone;
(5) bacteria filter device system utilizes the rapid mass transfer effect of ozone and sewage, ensure better ozone oxidation effect prerequisite under, more conventional ozonation aerated biological filter can save floor occupying area at least 30% and investment reduce about 20%.
(6) the biological filter backwashing period time is long, can reach 2 ~ 3d.
Accompanying drawing explanation
A kind of advanced treatment of wastewater bacteria filter device of Fig. 1 system
Fig. 2 filtrate back up pad and on round hole schematic diagram
Fig. 3 water distribution uniformity gas pipe schematic diagram
The distribution hole position view of branch's distribute water and air pipe of Fig. 4 water distribution uniformity gas pipe
Fig. 5 Liqiud-gas mixing device (Venturi fluidic device) schematic diagram
Reference numeral:
1, sewage storage tank; 2, control valve before pump; 3, lift pump; 4; Back-flushing variable valve; 5, ozone generating-device; 6, gas cylinder; 7, Liqiud-gas mixing device; 8, overflow chamber; 9, catalyzed oxidation layer; 10, water distribution uniformity gas pipe; 11, filter material layer; 12, strainer head; 13, water and air distributing room; 14, filtrate back up pad; 15, back flushing air variable valve; 16, measuring apparatus; 17, go out water regulating valve; 18, blow-off valve; 19, air compressor; 20, overflow variable valve; 21, sampling valve; 22, perforate; 23, mounting flange screw; 24, biological filter; 25, arterial highway distribute water and air pipe; 26, branch's distribute water and air pipe; 27, distribution hole; 28, liquid-inlet; 29, gas feed; 30, gas-liquid mixed exports.
Embodiment
Below by way of specific specific examples, the technical solution of the utility model is described.Should be understood that one or more method stepss that the utility model is mentioned do not repel and before and after described combination step, also to there is additive method step or can also insert additive method step between these steps clearly mentioned; Should also be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.And, except as otherwise noted, the numbering of various method steps is only the convenient tool differentiating various method steps, but not be ordering or the enforceable scope of restriction the utility model of restriction various method steps, the change of its relativeness or adjustment, when changing technology contents without essence, when being also considered as the enforceable category of the utility model.
A kind of advanced treatment of wastewater bacteria filter device system as shown in Figure 1, comprise a biological filter 24, the open top of described biological filter 24, inside is provided with overflow chamber 8, catalyzed oxidation floor 9, filter material layer 11 and water and air distributing room 13 from top to bottom successively; The bottom of described catalyzed oxidation layer 9 is provided with water distribution uniformity gas pipe 10; Filtrate back up pad 14 is provided with between described filter material layer 11 and described water and air distributing room 13; Described filtrate back up pad 14 is fixed with strainer head 12;
The pool wall of described overflow chamber 8 is provided with overflow outlet; Described water distribution uniformity gas pipe 10 is provided with air water import; The pool wall of described water and air distributing room 13 is provided with liquid entrance and back flushing air import;
Liquid entrance on the pool wall of described water and air distributing room 13 is connected through pipeline with fresh water feed conduit, and on connection line, be provided with back-flushing variable valve 4; Described liquid entrance is also connected through pipeline with measuring apparatus 16, and on connection line, be provided with out water regulating valve 17;
Sewage storage tank 1, lift pump 3, ozone generating-device 5, Liqiud-gas mixing device 7 and air compressor 19 is provided with outside described biological filter 24;
Described sewage storage tank 1 is provided with sewage outlet; Described lift pump 3 is provided with import and outlet; Described ozone generating-device 5 is provided with ozone outlet; Described Liqiud-gas mixing device 7 is provided with liquid-inlet 28, gas feed 29 and gas-liquid mixed export 30; The sewage outlet of described sewage storage tank 1 is connected through pipeline with the import of described lift pump 3, and control valve 2 be provided with pump on connection line before; The outlet of described lift pump 3 is connected through pipeline with the liquid-inlet 28 of described gas liquid mixer; The ozone outlet of described ozone generating-device 5 is connected through pipeline with the gas feed 29 of described gas liquid mixer; The gas-liquid mixed outlet 30 of described gas liquid mixer is connected through pipeline with the air water import of described water distribution uniformity gas pipe 10;
Described air compressor 19 is provided with compressed gas outlet; The compressed gas outlet of described air compressor 19 is connected through pipeline with the back flushing air import on the pool wall of described water and air distributing room 13, and on connection line, be provided with back flushing air variable valve 15.
As preferred embodiment; Gac is filled, particle diameter 3 ~ 4mm, density 0.45 ~ 0.55g/cm in described catalyzed oxidation layer 9
3, specific surface area 800 ± 50m
2/ g, iodine sorption value 800 ~ 850mg/g.
As preferred embodiment: fill gac in described filter material layer 11, particle diameter 3 ~ 4mm, density 0.45 ~ 0.55g/cm3, specific surface area 800 ± 50m2/g, iodine absorption 800 ~ 850mg/g.
As preferred embodiment: the total height 3.8-5.8m of described biological filter 24, the height of catalyzed oxidation layer 9 is 0.45-0.6m, and the height of filter material layer 11 is 2-4m.
As preferred embodiment: the Duo Gen branch distribute water and air pipe 26 that described water distribution uniformity gas pipe 10 comprises horizontally disposed arterial highway distribute water and air pipe 25 and is connected with described arterial highway distribute water and air pipe 25; Described branch distribute water and air pipe 26 is arranged symmetrically in distribute water and air pipe 25 both sides, described arterial highway; Described arterial highway distribute water and air pipe 25 exports 30 with the gas-liquid mixed of described gas liquid mixer and is connected through pipeline; Described branch distribute water and air pipe 26 is provided with distribution hole 27.
As further preferred embodiment: the caliber of shown branch distribute water and air pipe 26 is 25-80mm; The aperture 3-4mm of described distribution hole 27; Described distribution hole 27 is staggered arrangement on described branch's distribute water and air pipe 26 both sides obliquely tube wall of 45 °.
As preferred embodiment: described filtrate back up pad 14 is centrally symmetrically distributed with multiple perforate 22, described perforate 22 is provided with strainer head 12; Described strainer head 12 comprises filter cap and filter handle; Filter cap and filter handle are hollow structure; Described filter cap is positioned at described filter material layer 11, filter cap top seal, and side is distributed with multiple filter seam, and bottom is connected with described filter handle; The bottom end opening of described filter handle, and insert in described water and air distributing room 13.
As further preferred embodiment: the cross section of described filter cap is circular, and vertical section is trapezoidal, high 25-40mm; Described filter seam shape is wedge shape; Filter seam width 2 ± 0.1mm; The length of described filter handle is 225-350mm.
As further preferably implementation method: the filter seam total area in described filtrate back up pad 14 and the area ratio of filtrate back up pad 14 are 0.01-0.025:1.
As preferred embodiment: described Liqiud-gas mixing device 7 is Venturi fluidic device; The gas-liquid mixed of described Venturi fluidic device exports on 30 pipelines and is connected with check valve.
As preferred embodiment: the pool wall of described filter material layer 11 is provided with multiple thief hole 21 from top to bottom; Described thief hole 21 is connected with sampling valve.
As preferred embodiment: the pool wall of described water and air distributing room 13 is also provided with drain; Described drain is connected with blow-off valve 18.
As preferred embodiment: described sewage storage tank 1 is provided with wastewater inlet; Described wastewater inlet is connected through pipeline with sewer line; The top of described sewage storage tank 1 is also provided with overflow port.
As preferred embodiment: the overflow outlet of described overflow chamber 8 is connected with overflow variable valve 20.
As preferred embodiment: described measuring apparatus 16 is spinner-type flowmeter or magnetic flow meter.
As preferred embodiment: described ozone generating-device 5 is oxygen source ozone producer or air source ozone producer.
Utilize the treatment process of described advanced treatment of wastewater bacteria filter device system, comprise the following steps:
(1) start lift pump 3, the catalyzed oxidation layer 9 entered after the distribution of water distribution uniformity gas pipe 10 by the sewage in sewage storage tank 1, and flow through filter material layer 11 and carry out contact oxidation filtration; Then water and air distributing room 13 is entered by filtrate back up pad 14; Liquid level in biological filter 24 reaches overflow outlet on overflow chamber 8 pool wall when carrying out overflow, then opens to be located at water and air distributing room 13 pool wall goes out water regulating valve 17, and water outlet is outer row after measuring apparatus 16 is measured; And by variable valve 2 before regulating the pump before being located at lift pump 3 and described go out water regulating valve 17 make the level stability of biological filter 24;
(2) after normal operation, open ozone generating-device 5, ozone and the sewage from sewage storage tank 1 are formed together with gas-liquid mixture by Liqiud-gas mixing device 7 short mix and enter catalyzed oxidation layer 9 after water distribution uniformity gas pipe 10 distribute, ozone produces a large amount of hydroxyl radical free radicals in catalyzed oxidation layer 9, play the effect of oxide treatment hardly degraded organic substance, and residual ozone is fully decomposed by carrying out chemical reaction with catalyzed oxidation layer 9;
(3) run after for some time, back flushing is carried out to biological filter 24, retain pollutent to remove in biological filter 24: utilize fresh water as back-flushing, and adopt air compressor 19 to provide back flushing air; First close lift pump 3, ozone generating-device 5 and go out water regulating valve 17, then unlatching back-flushing intake valve 4 and back flushing air variable valve 15 carry out to biological filter 24 back flushing that gas punching, aqueous vapor punching and water rush three phases successively stage by stage; Back flushing air enters from the water and air distributing room 13 of biological filter 24, discharges after flowing through filtrate back up pad 14, filter material layer 11 and catalyzed oxidation layer 9 from the bottom to top from top, biological filter 24; Back-flushing then enters from the water and air distributing room 13 of biological filter 24, discharges after flowing through filtrate back up pad 14, filter material layer 11 and catalyzed oxidation layer 9 from the bottom to top from the overflow outlet overflow chamber 8 pool wall;
Below by way of specific embodiment, further explaination is done to bacteria filter device system of the present invention and treatment process:
Utilize a kind of advanced treatment of wastewater bacteria filter device system shown in Fig. 1 to carry out advanced treatment of wastewater: the open top of biological filter 24, inside is provided with overflow chamber 8, catalyzed oxidation floor 9, filter material layer 11 and water and air distributing room 13 from top to bottom successively; The bottom of described catalyzed oxidation layer 9 is provided with water distribution uniformity gas pipe 10; Filtrate back up pad 14 is provided with between described filter material layer 11 and described water and air distributing room 13; Described filtrate back up pad 14 is fixed with strainer head 12; Biological filter is round shape, diameter 0.5 meter, high 3.8m, top overflow chamber height 1m; Catalyzed oxidation floor height 0.45m, filtrate floor height 2m;
All load high grade activated carbon composition in catalyzed oxidation layer and filter material layer, select particle diameter 3mm, density 0.45 ~ 0.55g/cm
3, specific surface area 800 ± 50m
2/ g, iodine sorption value 800 ~ 850mg/g;
Filtrate back up pad, as shown in Figure 2, in center and the perforate of centrally offering totally 7 diameter 32mm in the form of a ring, strainer head is fixed in perforate; Strainer head comprises filter cap and filter handle; Filter cap and filter handle are hollow structure; Described filter cap is positioned at described filter material layer, filter cap top seal, and side is distributed with multiple wedge shape filter seam, and bottom is connected with described filter handle; The bottom end opening of described filter handle, and it is indoor to insert described water and air distributing; The cross section of filter cap is circular, and vertical section is trapezoidal; Filter seam width 2 ± 0.1mm; The length of described filter handle is 225mm; Filter seam total area 0.0042m
2;
Water distribution uniformity gas pipe, as shown in Figure 3 and Figure 4, horizontally disposed arterial highway distribute water and air pipe 25 and the Duo Gen branch distribute water and air pipe 26 be connected with described arterial highway distribute water and air pipe 25; Described branch distribute water and air pipe 26 is arranged symmetrically in distribute water and air pipe 25 both sides, described arterial highway; Described arterial highway distribute water and air pipe 25 exports 30 with the gas-liquid mixed of described gas liquid mixer and is connected through pipeline; Described branch distribute water and air pipe 26 is provided with distribution hole 27; The caliber of branch's distribute water and air pipe 26 is 25mm; The aperture 3mm of described distribution hole 27; Described distribution hole 27 is staggered arrangement on described branch's distribute water and air pipe 26 both sides obliquely tube wall of 45 °;
Liqiud-gas mixing device is Venturi fluidic device, and as shown in Figure 5, gas-liquid mixed exports on 30 pipelines and is connected with check valve.
Concrete treatment step is as follows:
(1) sampling valve 21, the blow-off valve 18 on biological filter 24 is closed, and back flushing air variable valve 15, back-flushing variable valve 4 and go out water regulating valve 17;
(2) in sewage storage tank 1, pending sewage is added to overflow port;
(3) start lift pump 3, sewage enters catalyzed oxidation layer 9 after being distributed by water distribution uniformity gas pipe 10, and flows through filter material layer 11 and carry out contact oxidation filtration;
(4) abundant mixed sewage enters water and air distributing room 13 by filtrate back up pad 14 again;
(5) after overflow is carried out in the overflow outlet arrived on overflow chamber 8 pool wall to the liquid level in biological filter 24, open out water regulating valve 17 again, water outlet is outer row after measuring apparatus 16 is measured, and before passing through water regulating valve 17 and pump, control valve 2 makes the level stability of biological filter 24;
(6) ozone generating-device 5 is opened after normal operation, ozone and sewage form the catalyzed oxidation layer 9 entered after water distribution uniformity gas pipe 10 distributes together with gas-liquid mixture in biological filter 24 by Liqiud-gas mixing device 7 short mix, ozone produces a large amount of hydroxyl radical free radicals in catalyzed oxidation layer 9, hydroxyl radical free radical has very strong oxidation capacity to hardly degraded organic substance, and the residual ozone of simultaneously decomposing completely is fully decomposed by carrying out chemical reaction with catalyzed oxidation layer 9 (having reductibility); Biological filter 24 hydraulic detention time is about 1h, volumetric loading 1.2 ~ 2kgCOD/m
3.d; Ozone dosage 20 ~ 30mg/L;
(7) after the steady running 3d time, back flushing is carried out to biological filter 24: during back flushing, adopt fresh water source nearby to provide back flushing air as back-flushing and the air compressor 19 carried, be divided into gas punching, aqueous vapor punching and water to rush three phases, each backwash time in stage is 5min; Close out water regulating valve 17, lift pump 3 and ozone generating-device 5 before back flushing, then open back flushing air variable valve 15, air compressor 19 and back-flushing variable valve 4 stage by stage again; Gas flushing intensity is 13.0L/s.m
2time, water backwashing intensity is 5.0L/s.m
2.Tradition petrochemical wastewater only can be better than the secondary discharge standard in integrated wastewater discharge standard after secondary biochemical treatment,
Can reach to first discharge standard after the present embodiment process, as shown in table 1:
Table 1 biological filter wastewater treatment efficiency
| Project | COD Cr | BOD 5 | NH 3-N | SS | TP | Petroleum-type |
| Before process | 102 | 20 | 5.4 | 34 | 1.0 | 10 |
| After process | 47 | 10 | 3 | 8 | 0.5 | 2 |
Above-describedly be only preferred embodiment of the present utility model, not in order to limit the present invention, any amendment done within all spirit in utility model and principle, equivalently replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an advanced treatment of wastewater bacteria filter device system, comprise a biological filter (24), it is characterized in that, the open top of described biological filter (24), inside is provided with overflow chamber (8), catalyzed oxidation floor (9), filter material layer (11) and water and air distributing room (13) from top to bottom successively; The bottom of described catalyzed oxidation layer (9) is provided with water distribution uniformity gas pipe (10); Filtrate back up pad (14) is provided with between described filter material layer (11) and described water and air distributing room (13); Described filtrate back up pad (14) is fixed with strainer head (12);
The pool wall of described overflow chamber (8) is provided with overflow outlet; Described water distribution uniformity gas pipe (10) is provided with air water import; The pool wall of described water and air distributing room (13) is provided with liquid entrance and back flushing air import;
Liquid entrance on described water and air distributing room (13) pool wall is connected through pipeline with fresh water feed conduit, and on connection line, be provided with back-flushing variable valve (4); Described liquid entrance is also connected through pipeline with measuring apparatus (16), and on connection line, be provided with out water regulating valve (17);
Sewage storage tank (1), lift pump (3), ozone generating-device (5), Liqiud-gas mixing device (7) and air compressor (19) is provided with outside described biological filter (24);
Described sewage storage tank (1) is provided with sewage outlet; Described lift pump (3) is provided with import and outlet; Described ozone generating-device (5) is provided with ozone outlet; Described Liqiud-gas mixing device (7) is provided with liquid-inlet (28), gas feed (29) and gas-liquid mixed export (30); The sewage outlet of described sewage storage tank (1) is connected through pipeline with the import of described lift pump (3), and control valve (2) be provided with pump on connection line before; The outlet of described lift pump (3) is connected through pipeline with the liquid-inlet (28) of described gas liquid mixer; The ozone outlet of described ozone generating-device (5) is connected through pipeline with the gas feed (29) of described gas liquid mixer; Gas-liquid mixed outlet (30) of described gas liquid mixer is connected through pipeline with the air water import of described water distribution uniformity gas pipe (10);
Described air compressor (19) is provided with compressed gas outlet; The compressed gas outlet of described air compressor (19) is connected through pipeline with the back flushing air import on described water and air distributing room (13) pool wall, and on connection line, be provided with back flushing air variable valve (15).
2. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 1, is characterized in that, fills gac, particle diameter 3 ~ 4mm in described catalyzed oxidation layer (9); Gac is filled, particle diameter 3 ~ 4mm in described filter material layer (11).
3. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 1, it is characterized in that, the total height 3.8-5.8m of described biological filter (24), the height of catalyzed oxidation layer (9) is 0.45-0.6m, and the height of filter material layer (11) is 2-4m.
4. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 1, it is characterized in that, Duo Gen branch distribute water and air pipe (26) that described water distribution uniformity gas pipe (10) comprises horizontally disposed arterial highway distribute water and air pipe (25) and is connected with described arterial highway distribute water and air pipe (25); Described branch's distribute water and air pipe (26) is arranged symmetrically in distribute water and air pipe (25) both sides, described arterial highway; Described arterial highway distribute water and air pipe (25) exports (30) with the gas-liquid mixed of described gas liquid mixer and is connected through pipeline; Described branch's distribute water and air pipe (26) is provided with distribution hole (27).
5. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 4, is characterized in that, the caliber of shown branch's distribute water and air pipe (26) is 25-80mm; The aperture 3-4mm of described distribution hole (27); Described distribution hole (27) is staggered arrangement on described branch distribute water and air pipe (26) the both sides obliquely tube wall of 45 °.
6. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 1, it is characterized in that, described filtrate back up pad (14) is centrally symmetrically distributed with multiple perforate (22), described perforate (22) is provided with strainer head (12); Described strainer head (12) comprises filter cap and filter handle; Filter cap and filter handle are hollow structure; Described filter cap is positioned at described filter material layer (11), filter cap top seal, and side is distributed with multiple filter seam, and bottom is connected with described filter handle; The bottom end opening of described filter handle, and insert in described water and air distributing room (13).
7. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 6, is characterized in that, the cross section of described filter cap is circular, and vertical section is trapezoidal, high 25-40mm; Described filter seam shape is wedge shape; Filter seam width 2 ± 0.1mm; The length of described filter handle is 225-350mm.
8. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 6, is characterized in that, the filter seam total area on described filtrate back up pad (14) and the area ratio of filtrate back up pad (14) are 0.01-0.025:1.
9. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 1, is characterized in that, also comprise any one or multinomial in following characteristics:
A the pool wall of () described filter material layer (11) is provided with multiple thief hole from top to bottom; Described thief hole is connected with sampling valve (21);
B the pool wall of () described water and air distributing room (13) is also provided with drain; Described drain is connected with blow-off valve (18);
C the overflow outlet of () described overflow chamber (8) is connected with overflow variable valve (20).
10. a kind of advanced treatment of wastewater bacteria filter device system as claimed in claim 1, is characterized in that, also comprise any one or multinomial in following characteristics:
A () described measuring apparatus (16) is spinner-type flowmeter or magnetic flow meter;
B () described ozone generating-device (5) is oxygen source ozone producer or air source ozone producer;
C () described Liqiud-gas mixing device (7) is Venturi fluidic device; Gas-liquid mixed outlet (30) pipeline of described Venturi fluidic device is connected with check valve.
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| CN201420854516.8U CN204385029U (en) | 2014-12-26 | 2014-12-26 | A kind of advanced treatment of wastewater bacteria filter device system |
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| CN201420854516.8U CN204385029U (en) | 2014-12-26 | 2014-12-26 | A kind of advanced treatment of wastewater bacteria filter device system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529076A (en) * | 2014-12-26 | 2015-04-22 | 上海中信水务产业有限公司 | Sewage deep treatment biofilter device system and treatment process |
| CN107024139A (en) * | 2017-05-27 | 2017-08-08 | 中冶京诚工程技术有限公司 | The system that overflow water-locator and water pool inner water uniformly update |
-
2014
- 2014-12-26 CN CN201420854516.8U patent/CN204385029U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529076A (en) * | 2014-12-26 | 2015-04-22 | 上海中信水务产业有限公司 | Sewage deep treatment biofilter device system and treatment process |
| CN107024139A (en) * | 2017-05-27 | 2017-08-08 | 中冶京诚工程技术有限公司 | The system that overflow water-locator and water pool inner water uniformly update |
| CN107024139B (en) * | 2017-05-27 | 2023-06-02 | 中冶京诚工程技术有限公司 | System for overflow water distributor and water in pond are even to be updated |
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Address after: 101199 7th Floor 701, No. 2 Building, 60 Xinhua West Street, Tongzhou District, Beijing Patentee after: Guotou xinkaishui Environmental Investment Co.,Ltd. Address before: 101199 7th Floor 701, No. 2 Building, 60 Xinhua West Street, Tongzhou District, Beijing Patentee before: XINKAI WATER ENVIRONMENT INVESTMENT Co.,Ltd. |
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