CN201320452Y - VOCs waste gas treatment system - Google Patents
VOCs waste gas treatment system Download PDFInfo
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- CN201320452Y CN201320452Y CNU2008201785076U CN200820178507U CN201320452Y CN 201320452 Y CN201320452 Y CN 201320452Y CN U2008201785076 U CNU2008201785076 U CN U2008201785076U CN 200820178507 U CN200820178507 U CN 200820178507U CN 201320452 Y CN201320452 Y CN 201320452Y
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model belongs to a waste gas treatment device, in particular to a treatment device for volatile organic gas VOCs. The VOCs waste gas treatment system comprises a biochemical treatment device composed of a biochemical treatment box b, a VOCs distribution device unit, a circuiting water unit and a biological active filler unit. The VOCs waste gas treatment system solves the problem of waste water in the operation of a common biological dripping pool, has simple structure, saves the cost of nutrient fluid, and reduces the operation cost of the system.
Description
Technical field
The utility model belongs to a kind of waste gas pollution control and treatment device, especially relates to a kind for the treatment of apparatus to VOC VOCs.
Background technology
The VOCs full name is a VOC, mainly refers to hydrocarbon and their derivative.Difference by chemical constitution can be divided into straight chain compound, alicyclic compound, aromatic compound and heterocycle compound.VOCs belongs to atmosphere pollution, is propagation medium with the air, by respiratory system and skin human body is produced toxic action.VOCs comprises industrial waste gas and foul gas, is mainly derived from sewage disposal, municipal refuse, and petrochemical industry, papermaking, pharmacy is butchered, industries such as plastics and food processing.
The main method of administering VOCs at present has physics method, chemical method and bioanalysis.The physics method does not change the chemical property of VOCs, just with a kind of material its smell is sheltered and is diluted, or it is transferred to liquid phase or the solid phase from gas phase, and the improvement method of using always has masking method, dilution method and absorption process; Chemical method is the chemical constitution that changes VOCs by chemical reaction, makes its material that changes nonirritant or low irritant into, and common method has firing method, catalytic oxidation and acid ﹠ alkali liquid washing method; The shortcoming of physics, chemical method is the many and complex process of device therefor, regeneration difficulty after the secondary pollution, problems such as subsequent processes complexity, energy consumption height.Biological rule is to utilize the metabolism of microorganism, is CO with the VOCs decomposing oxidation
2, H
2Inorganic matters such as O reach the purification purpose, and biological treatment commonly used at present has biological filter and bio-trickling filter.But bio-trickling filter also exposes some shortcomings in actual applications, and is relatively poor as aromatic hydrocarbons, heterocycle compound removal efficient to indissoluble; The plastics class filling surface that adopts is long-pending less, and biofilm speed is slow; The filler porosity is low, causes the pressure drop of bio-trickling filter bigger; Need constantly add nutriment, complicated operation makes its application be subjected to certain restriction.
The utility model content
The utility model has been researched and developed a kind of VOCs exhaust treatment system in order to solve the technical problem that exists in the prior art, has improved removal efficient, has realized effect simple to operate.
Content of the present utility model is
A kind of VOCs exhaust treatment system, described system comprises a biochemical treatment apparatus, it comprises the biochemical treatment case, VOCs gas distribution unit, recirculated water unit and biological active filling material unit;
Described VOCs gas distribution unit includes VOCs gas distribution pipeline and VOCs gas distribution control assembly, and described VOCs gas distribution pipeline is arranged on described biochemical treatment case inside;
Described recirculated water unit comprises the recirculated water sprinkler part, circulating water line, recirculated water control assembly, circulation pool and cyclic water tank; Described recirculated water sprinkler part and circulation pool are arranged on described biochemical treatment case inside;
Described biological active filling material unit comprises the biological active filling material bed, throws in bioengineered strain in the biological active filling material bed; Described biological active filling material bed is arranged on biochemical treatment case inside;
Described VOCs exhaust treatment system also comprises gas sampling system and escape pipe, and described VOCs waste gas enters described biochemical treatment apparatus by the gas sampling system, and described waste gas is discharged through described escape pipe after biochemical treatment apparatus is handled.
In concrete application, wash in order to realize recirculated water, effects such as spray, the circulation pool in the described recirculated water unit is arranged on described biochemical treatment lower box part;
Described circulating water line comprises circulating water pipe, circulation discharge pipe line and circulation inlet pipeline; Described circulation discharge pipe line one end and described circulation pool are communicated with, and the other end is connected with described cyclic water tank; Described circulating water pipe one end is connected with described cyclic water tank, and the other end is connected with described circulation inlet pipeline;
Described recirculated water sprinkler part comprises water sprayer tube road and shower nozzle; Described water sprayer tube road is connected with described circulation inlet pipeline, and described shower nozzle is installed on the water sprayer tube road;
Described recirculated water control assembly is one group of control valve, comprises water inlet control valve and draining control valve; Described draining control valve is installed on the described circulation discharge pipe line, and described water inlet control valve is fixed on the described circulating water inlet road;
Be provided with water circulating pump in the described cyclic water tank.
In concrete application, the VOCs gas distribution pipeline of described VOCs gas distribution unit comprises exhaust inlet pipe and gas distribution pipe, and described exhaust inlet pipe is connected with gas distribution pipe, is furnished with venthole on the described gas distribution tube wall;
Described VOCs gas distribution control assembly is one group of control valve, comprises air intake control valve and gas exhausting valve; Described air intake control valve is installed on the described exhaust inlet pipe, and described gas exhausting valve is fixed on the described escape pipe.
In order to solve the not tractable problem of low temperature waste gas, described VOCs exhaust treatment system also comprises heater, and described heater is arranged in the middle of described gas sampling system and the biochemical treatment apparatus; Described heater comprises heating blower, non-return valve, heat control valve and heater air inlet pipe and heater escape pipe; Heater inside is heat(ing) coil; Described heater escape pipe is connected with described exhaust inlet pipe; Described gas sampling system enters waste gas in the biochemical treatment apparatus by the heater escape pipe through behind the heater.
In order to solve the purpose of getting biochemical treatment apparatus express developed, described VOCs exhaust treatment system also comprises a back purge system, and described back purge system comprises a backwash blower fan, backwash air inlet pipe and backwash control valve; Described backwash air inlet pipe one end is connected with the backwash blower fan, and the other end is connected with described exhaust inlet pipe; Described backwash control valve is fixed on the described backwash air inlet pipe.
In concrete application, the water sprayer tube road of described recirculated water sprinkler part is arranged in the biochemical treatment upper box part; The VOCs gas distribution pipe of described VOCs gas distribution unit is arranged in the biochemical treatment lower box part, and on described circulation pool; Described biological active filling material bed is fixed in the middle of water sprayer tube road and the VOCs gas distribution pipe.
Described VOCs exhaust treatment system also comprises blow-off pipe and blowoff valve; Also be provided with one group of Pressure gauge in the system, be installed in described biochemical treatment case top and bottom respectively.
In the application of reality, the filler that adopts in the biological active filling material bed in the described biological active filling material unit is a grating coarse pored gauze packing, the specific area of unit mass filler＞10 * 10
4m
2/ m
3, the average wet density of the filler after the biofilm is 1.00g/cm
3, porosity is more than 90%; Filling surface can be strengthened biomembranous adhesive force by the fixing chemical group of some of embedding, accelerates biofilm speed.
The microorganism that the native system operation adds is an engineering bacteria, is the mixture that extraordinary microorganism, enzyme preparation, microorganism surface reaction agent and microorganism nutrient are formed.Extraordinary microorganism carries out composite domestication according to pollutant source type and polluter.And recirculated water adopts industrial wastewater, does not additionally add nutriment, can aqueous vapor rule together, and reduces operating cost.
Adopt the utility model system handles VOCs gas, following technological merit arranged:
1, does nutrients with trade effluent.The nutrient solution dosing system of common bio-trickling filter can be omitted, its function is replaced by circulation, and system constitutes simple; Save the nutrient solution expense, reduced the operating cost of system.When inlet gas concentration less than 1000mg/m
3The time (in NMHC), all contaminations concentration all can satisfy the requirement of GB16297-1996 and GB14554-93 in the outlet.Aqueous vapor is ruled together and has been solved the wastewater problem that produces when common biology drips the pond operation.
2, engineering bacteria is to the benzene class, and organic clearances such as organic sulfur class, alkane olefines, aerobic hydro carbons all are better than common biology and drip the pond.With benzene is example, as import benzene＜100mg/m
3The time, the clearance that common biology drips the pond is 40%-60%, this technology can reach more than 90%.
3, the voidage of graded stuffing＞80%, specific area＞10 * 10
4m
2/ m
3(filler).(operating cost is saved in pressure drop＜200Pa), reduce the power of booster fan to the resistance that bigger voidage can reduce gas when flowing through.Can be bigger in the graded stuffing for the space of growth of microorganism, the recoil number of times significantly reduces.As inlet gas concentration＜500mg/m
3The time, can normally move 1 year and need not wash; As inlet gas concentration＜1000mg/m
3The time, the annual backwash that only need carry out two to three times makes unnecessary biofilm detachment, and the maintenance system normally moves.
4, film growth control system is simple.The simple air douche of this process using can be avoided the biomembrane undue growth of filling surface.Recoil water derives from recirculated water, and recoil waterpipe, pump is all shared with circulation, and back flushing air pipeline and gas distribution pipeline and admission line and gas distribution system are shared, only increase a backwash blower fan.Drip the pond with common biology and compare, system is simpler.
Description of drawings
Fig. 1 is the utility model system architecture schematic diagram;
Fig. 2 is the utility model mesophytization treating apparatus structural representation;
Fig. 3 is the utility model technological process explanation schematic diagram.
Each width of cloth accompanying drawing will be illustrated in conjunction with the specific embodiment
The specific embodiment
Fig. 1 is the utility model system architecture schematic diagram.
A kind of VOCs exhaust treatment system, described system comprises a biochemical treatment apparatus, it comprises biochemical treatment case b, VOCs gas distribution unit, recirculated water unit and biological active filling material unit;
Described VOCs gas distribution unit includes VOCs gas distribution pipeline and VOCs gas distribution control assembly, and described VOCs gas distribution pipeline is arranged on described biochemical treatment case b inside;
Described recirculated water unit comprises the recirculated water sprinkler part, circulating water line, recirculated water control assembly, circulation pool and cyclic water tank; Described recirculated water sprinkler part and circulation pool are arranged on described biochemical treatment case b inside;
Described biological active filling material unit comprises biological active filling material bed 13, throws in bioengineered strain in the biological active filling material bed 13; Described biological active filling material bed 13 is arranged on biochemical treatment case b inside;
Described VOCs exhaust treatment system also comprises gas sampling system and escape pipe, and described VOCs waste gas enters described biochemical treatment apparatus by the gas sampling system, and described waste gas is discharged through described escape pipe 23 after biochemical treatment apparatus is handled.
Wherein, the circulation pool c in the described recirculated water unit is arranged on described biochemical treatment case b bottom;
Described circulating water line comprises circulating water pipe 17, circulation discharge pipe line 14 and circulation inlet pipeline 19; Described circulation discharge pipe line 14 1 ends and described circulation pool c are communicated with, and the other end is connected with described cyclic water tank d; Described circulating water pipe 17 1 ends are connected with described cyclic water tank d, and the other end is connected with described circulation inlet pipeline 18;
Described recirculated water sprinkler part comprises water sprayer tube road 20 and shower nozzle 21; Described water sprayer tube road 20 is connected with described circulation inlet pipeline 19, and described shower nozzle 21 is installed on the water sprayer tube road 20;
Described recirculated water control assembly is one group of control valve, comprises water inlet control valve 18 and draining control valve 15; Described draining control valve 15 is installed on the described circulation discharge pipe line 14, and described water inlet control valve 18 is fixed on the described circulating water inlet road 19;
Be provided with water circulating pump 16 among the described cyclic water tank d.
In concrete application, the VOCs gas distribution pipeline of described VOCs gas distribution unit comprises exhaust inlet pipe 8 and gas distribution pipe 9, and described exhaust inlet pipe 8 is connected with gas distribution pipe 9, is furnished with venthole on described gas distribution pipe 9 walls;
Described VOCs gas distribution control assembly is one group of control valve, comprises air intake control valve 7 and gas exhausting valve 24; Described air intake control valve 7 is installed on the described exhaust inlet pipe 8, and described gas exhausting valve 24 is fixed on the described escape pipe 23.
In order to solve the not tractable problem of low temperature waste gas, described VOCs exhaust treatment system also comprises heater a, and described heater a is arranged in the middle of described gas sampling system and the biochemical treatment apparatus; Described heater a comprises heating blower 1, non-return valve 2, heat control valve 3 and heater air inlet pipe 4 and heater escape pipe 6; Heater a inside is heat(ing) coil 5; Described heater escape pipe 6 is connected with described exhaust inlet pipe 8; Described gas sampling system enters waste gas in the biochemical treatment apparatus by heater escape pipe 6 through behind the heater.
In order to solve the purpose of getting biochemical treatment apparatus express developed, described VOCs exhaust treatment system also comprises a back purge system, and described back purge system comprises a backwash blower fan 10, backwash air inlet pipe 11 and backwash control valve 12; Described backwash air inlet pipe 11 1 ends are connected with backwash blower fan 10, and the other end is connected with described exhaust inlet pipe 8; Described backwash control valve 12 is fixed on the described backwash air inlet pipe 11.
In concrete application, the water sprayer tube road 20 of described recirculated water sprinkler part is arranged in biochemical treatment case b top; The VOCs gas distribution pipe 9 of described VOCs gas distribution unit is arranged in biochemical treatment case b bottom, and on described circulation pool c; Described biological active filling material bed 13 is fixed in the middle of water sprayer tube road 20 and the VOCs gas distribution pipe 9.
Described VOCs exhaust treatment system also comprises blow-off pipe 25 and blowoff valve 26; Also be provided with one group of Pressure gauge 22 and 27 in the system, be installed in described biochemical treatment case top and bottom respectively.
Fig. 2 is the utility model mesophytization treating apparatus structural representation; Fig. 3 is the utility model technological process explanation schematic diagram.Organic exhaust gas from the gas sampling system enters system behind booster fan 1.System comprises that heater a and biochemical treatment apparatus b form.When temperature was moved lower season, the steam(-)coil 5 of heater a put into operation, and EGT is remained on more than 15 degree; The major function of biochemical treatment apparatus is the microorganism metabolic activity by filling surface, decomposes, utilizes the organic matter in the waste gas, is translated into CO
2, H
2O, N
2With inorganic matters such as sulfate, reach the purpose of Purge gas.
As shown in Figure 2, biochemical treatment apparatus b is made up of recirculated water unit, biological active filling material bed and VOCs gas distribution unit; Circulation pool c, sprinkler part, cyclic water tank d and circulation draining, water inlet pipe have constituted the recirculated water unit.The recirculated water unit can provide nutriment for the microorganism on the filler, and makes gas keep suitable humidity, is beneficial to microorganism and keeps active.The engineering bacteria and the gauze packing that are fixed on the grating gauze packing 13 have constituted the most important biological active filling material in biochemical treatment unit.Biological active filling material utilizes the nutriment in the waste water to carry out microorganism metabolism, and the organic matter in the waste gas is converted into inorganic matter, thereby reaches the purpose that aqueous vapor is ruled together.
The bottom of described biochemical treatment apparatus b is provided with VOCs gas distribution pipeline 9, and this gas distribution pipeline 9 links to each other with exhaust inlet pipe 8 Pressure gauge 27 and air intake control valve 7 are housed; Biochemical treatment apparatus b middle part is fixed with grating gauze packing bed 13, adds engineering bacteria to the packing area during device operation, and engineering bacteria promptly constitutes the biologic packing material bed after the biofilm success in filler; Gas distribution pipeline 9 is laid in the below of packing area, and biochemical treatment apparatus b bottom is provided with circulation pool c, and described circulation drainage pipeline 14 links to each other with cyclic water tank d, and for the VOCs master gas of biochemical treatment apparatus provides shower water, circulation pool c has blow-off pipe 25; Biologic packing material bed 13 tops are provided with sprinkler part, and shower water is from the recirculated water among the cyclic water tank d; Be provided with blast pipe 23 at the biochemical treatment apparatus top, the gas after the processing is from discharging here;
As shown in Figure 3, this biochemical treatment apparatus method of operation is as follows: recoil air intake control valve door 12 is closed when normally moving, and sewage draining valve 26 is closed, other valve opening.Waste gas enters biochemical section by the bottom, flows to biochemical section top behind gas distribution pipeline 9; Waste gas after the purification enters atmosphere outside behind the discharge tube 23 on biochemical section top.Recirculated water is entered by biochemical section top, evenly trickles down at filling surface through sprinkler part, collects in the circulation pool c of bottom at last, sends into cyclic water tank d by circulation drainage pipeline 14 then.Recirculated water employing trade effluent and peace and quiet following water are formulated in proportion, and its COD sends into biochemical treatment apparatus by water circulating pump 16 after being not more than 300mg/L. adding cyclic water tank d.When the difference of Pressure gauge 22 and Pressure gauge 27 during greater than 1kPa, backwashing procedures starts.Air recoil mode is adopted in backwash.At first, air intake valve 7 and recirculated water draining valve 15 are closed, and other valve is kept original state, and water circulating pump 16 starts to the biochemical treatment apparatus water filling simultaneously with stand-by pump; During to the backwash water level, water circulating pump d closes, and backwash intake valve 12 is opened, and backwash blower fan 10 starts, and begins to carry out the air recoil.Backwash finishes behind the 5min, and recoil blower fan 10 and recoil intake valve 12 are closed in succession, circulation water discharging valve 15 opening water discharges, and the biomembrane that comes off is discharged with water.When water level dropped to the circulation water level, water circulating pump 16 started to biochemical treatment apparatus b delivery cycle water, and backwash air intake valve 12 is closed, and air intake valve 7 is opened, and normal operation recovers in system.The living beings that partial flushing is got off are deposited on circulation pool c bottom, discharge by blow-off line 25.
Use system of the present utility model that VOC gas is experimentized.Treatment effect sees Table 1, and this clearance on average reaches 81.8%, and the clearance of toluene is 99.2%, and acetone is 99.4%, and the clearance of NMHC is 81.2%, and the clearance of ethylbenzene is 97.5%.
Pollutant deal with data table in the table 1 VOC gas
| Benzene | Toluene | NMHC | Acetone | Isopropylbenzene | Ethylbenzene | |
| Inlet concentration | 1.1-97.1 | 0.1-19.6 | 190-758 | 6.6-174 | 1.3-137.2 | 0.1-4.5 |
| Exit concentration | 6.8 | 0.1 | 74.4 | 0.23 | 2.26 | 0.04 |
| Clearance | 81.8％ | 99.2％ | 81.2％ | 99.4％ | 94.7％ | 97.5％ |
Claims (8)
1 one kinds of VOCs exhaust treatment systems, described system comprises a biochemical treatment apparatus, it is characterized in that, described biochemical treatment apparatus comprises the biochemical treatment case, VOCs gas distribution unit, recirculated water unit and biological active filling material unit;
Described VOCs gas distribution unit includes VOCs gas distribution pipeline and VOCs gas distribution control assembly, and described VOCs gas distribution pipeline is arranged on described biochemical treatment case inside;
Described recirculated water unit comprises the recirculated water sprinkler part, circulating water line, recirculated water control assembly, circulation pool and cyclic water tank; Described recirculated water sprinkler part and circulation pool are arranged on described biochemical treatment case inside;
Described biological active filling material unit comprises the biological active filling material bed, throws in bioengineered strain in the biological active filling material bed; Described biological active filling material bed is arranged on biochemical treatment case inside;
Described VOCs exhaust treatment system also comprises gas sampling system and escape pipe, and described VOCs waste gas enters described biochemical treatment apparatus by the gas sampling system, and described waste gas is discharged through described escape pipe after biochemical treatment apparatus is handled.
2 a kind of VOCs exhaust treatment systems according to claim 1 is characterized in that,
Circulation pool in the described recirculated water unit is arranged on described biochemical treatment lower box part;
Described circulating water line comprises circulating water pipe, circulation discharge pipe line and circulation inlet pipeline; Described circulation discharge pipe line one end and described circulation pool are communicated with, and the other end is connected with described cyclic water tank; Described circulating water pipe one end is connected with described cyclic water tank, and the other end is connected with described circulation inlet pipeline;
Described recirculated water sprinkler part comprises water sprayer tube road and shower nozzle; Described water sprayer tube road is connected with described circulation inlet pipeline, and described shower nozzle is installed on the water sprayer tube road;
Described recirculated water control assembly is one group of control valve, comprises water inlet control valve and draining control valve; Described draining control valve is installed on the described circulation discharge pipe line, and described water inlet control valve is fixed on the described circulating water inlet road;
Be provided with water circulating pump in the described cyclic water tank.
3 a kind of VOCs exhaust treatment systems according to claim 1 is characterized in that,
The VOCs gas distribution pipeline of described VOCs gas distribution unit comprises exhaust inlet pipe and gas distribution pipe, and described exhaust inlet pipe is connected with gas distribution pipe, is furnished with venthole on the described gas distribution tube wall;
Described VOCs gas distribution control assembly is one group of control valve, comprises air intake control valve and gas exhausting valve; Described air intake control valve is installed on the described exhaust inlet pipe, and described gas exhausting valve is fixed on the described escape pipe.
4 according to the described a kind of VOCs exhaust treatment system of one of claim 1-3, it is characterized in that,
Described VOCs exhaust treatment system also comprises heater, and described heater is arranged in the middle of described gas sampling system and the biochemical treatment apparatus; Described heater comprises heating blower, non-return valve, heat control valve and heater air inlet pipe and heater escape pipe; Heater inside is heat(ing) coil; Described heater escape pipe is connected with described exhaust inlet pipe; Described gas sampling system enters waste gas in the biochemical treatment apparatus by the heater escape pipe through behind the heater.
5 according to the described a kind of VOCs exhaust treatment system of one of claim 1-3, it is characterized in that,
Described VOCs exhaust treatment system also comprises a back purge system, and described back purge system comprises a backwash blower fan, backwash air inlet pipe and backwash control valve; Described backwash air inlet pipe one end is connected with the backwash blower fan, and the other end is connected with described exhaust inlet pipe; Described backwash control valve is fixed on the described backwash air inlet pipe.
6 according to the described a kind of VOCs exhaust treatment system of one of claim 1-3, it is characterized in that,
The water sprayer tube road of described recirculated water sprinkler part is arranged in the biochemical treatment upper box part; The VOCs gas distribution pipe of described VOCs gas distribution unit is arranged in the biochemical treatment lower box part, and on described circulation pool; Described biological active filling material bed is fixed in the middle of water sprayer tube road and the VOCs gas distribution pipe.
7 according to the described a kind of VOCs exhaust treatment system of one of claim 1-3, it is characterized in that,
Described VOCs exhaust treatment system also comprises blow-off pipe and blowoff valve; Also be provided with one group of Pressure gauge in the system, be installed in described biochemical treatment case top and bottom respectively.
8 a kind of VOCs exhaust treatment systems according to claim 1 is characterized in that,
The filler that adopts in the biological active filling material bed in the described biological active filling material unit is a grating coarse pored gauze packing, the specific area of unit mass filler＞10 * 10
4m
2/ m
3, the average wet density of the filler after the biofilm is 1.00g/cm
3, porosity is more than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201785076U CN201320452Y (en) | 2008-03-06 | 2008-10-31 | VOCs waste gas treatment system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820005145.0 | 2008-03-06 | ||
| CN200820005145 | 2008-03-06 | ||
| CNU2008201785076U CN201320452Y (en) | 2008-03-06 | 2008-10-31 | VOCs waste gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320452Y true CN201320452Y (en) | 2009-10-07 |
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ID=41157841
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689980A (en) * | 2011-03-21 | 2012-09-26 | 王鹤立 | Dual-mode bio-filter for sewage processing in low temperature regions |
| CN104353353A (en) * | 2014-11-07 | 2015-02-18 | 嘉园环保有限公司 | Biological trickling filter capable of automatically regulating microbial distribution |
-
2008
- 2008-10-31 CN CNU2008201785076U patent/CN201320452Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689980A (en) * | 2011-03-21 | 2012-09-26 | 王鹤立 | Dual-mode bio-filter for sewage processing in low temperature regions |
| CN104353353A (en) * | 2014-11-07 | 2015-02-18 | 嘉园环保有限公司 | Biological trickling filter capable of automatically regulating microbial distribution |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20121031 |