CN208022780U - A kind of up flow type water distribution gas distribution denitrification and nitrosation biofilter - Google Patents
A kind of up flow type water distribution gas distribution denitrification and nitrosation biofilter Download PDFInfo
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- CN208022780U CN208022780U CN201820007453.0U CN201820007453U CN208022780U CN 208022780 U CN208022780 U CN 208022780U CN 201820007453 U CN201820007453 U CN 201820007453U CN 208022780 U CN208022780 U CN 208022780U
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Abstract
The utility model discloses a kind of up flow type water distribution gas distribution denitrification and nitrosation biofilter comprising denilrification system, nitrosation system and the circulatory system, nitrosation system connectivity denilrification system, the circulatory system are connected to nitrosation system and denilrification system；Denilrification system upflow type aerating biological filter, water distribution system, gas distribution system, backwashing system and effluent weir.The up flow type water distribution gas distribution denitrification of the utility model and nitrosation biofilter, make the whole biofacies having compared with horn of plenty of biologic packing material in biofilter, the processing capacity of up flow type water distribution gas distribution denitrification and nitrosation biofilter can be improved, in the case that aeration quantity is relatively low, carbon source is less, it is reacted by carrying out short-cut nitrification and denitrification with nitrosation biofilter in up flow type water distribution gas distribution denitrification, realizes the removal to COD, TN in waste water.
Description
Technical field
The utility model is related to biofilter technical fields, specifically, anti-more particularly to a kind of up flow type water distribution gas distribution
Nitrification and nitrosation biofilter.
Background technology
Due to city and industrial expansion, more and more waste water discharge in human social activity.In waste water containing organic matter,
The pollutants such as nitrogen, phosphorus can cause water body to black, smelly, eutrophication.Currently, municipal wastewater treatment plant treatment process includes that activity is dirty
Bricklayer's's skill, sequencing batch reactor activated sludge process, A/O/A techniques etc., can effectively remove Pollutants in Wastewater, such as municipal wastewater plant effluent
COD concentration is generally between 50 to 100 milligrams/every liter, NH3- N is between 15 to 25 milligrams/every liter, and first discharge standard is then
It is required that COD is less than 50 milligrams/every liter, NH3- N is less than 5 milligrams/every liter, and TN is less than 15 milligrams/every liter.In order to improve natural water
Water quality, reduces water environment pollution load, and the laws and regulations that country formulates propose requirements at the higher level to wastewater discharge standard.Sewage plant is former
There is Process for Effluent to tend not to that discharge standard, COD (COD), ammonia nitrogen (NH is fully achieved3- N), total nitrogen (TN), total phosphorus
(TP) have different degrees of exceeded.In addition, the landfill leachate of refuse landfill exudation, the breeding wastewater etc. of farm's discharge,
Contain the pollutants such as large amount of organic, nitrogen, phosphorus.Due to the raising of wastewater discharge standard, Wastewater Pollutant excessive problem urgently solves
Certainly.Existing wastewater deep treatment process includes the high-level oxidation technologies such as Fenton, ozone, the membrane technologies such as ultrafiltration, nanofiltration, reverse osmosis,
The adsorption technologies such as activated carbon, membrane bioreactor, biofilter etc. have both the technology of biology and physical filtering effect.It is Fenton, smelly
The high-level oxidation technologies such as oxygen, which are mainly used for removing in waste water, is difficult to biodegradable organic matter, and cost is higher.It is ultrafiltration, nanofiltration, anti-
Bacterium, albumen, fat, polysaccharide, humus, heavy metal, various salts in the membrane technologies energy trap waters such as infiltration, cost are higher.It is living
Property charcoal also can absorbed portion Organic substance in water, heavy metal, but regenerate difficult, cost is higher.Membrane bioreactor collection physical filtering
It is acted on biological treatment bilayer, effluent quality is good.But film needs periodic cleaning, operating cost relatively high.Biofilter is mesh
Before be widely used, investment and the lower further treatment technique of operation cost, mainly apply to municipal sewage plant, waterworks,
The advanced treating of landfill leachate and some industrial wastewaters.The anaerobism of routine, aerobic treatment process tend not to thoroughly degrade useless
Organic substance in water, nitrogen, phosphorus.Common biofilter is biological aerated filter, and aeration quantity is larger, in removal COD and NH3Have in terms of-N
Preferable effect, but to removing TN less effectives.In addition, conventional aeration biofilter there are upper end biologic packing material biofacies rareness,
The drawbacks such as treatment effeciency is low, this is also a problem to be solved.
Utility model content
To solve the above problems, the utility model discloses a kind of up flow type water distribution gas distribution denitrification and nitrosation biological filter
Pond comprising denilrification system, nitrosation system and the circulatory system, nitrosation system connectivity denilrification system, the circulatory system connect
Logical nitrosation system and denilrification system；And
Wherein denilrification system includes upflow type aerating biological filter, water distribution system, gas distribution system, backwashing system and goes out
Mill weir, upflow type aerating biological filter are connected to nitrosation system by outlet pipe, have inside upflow type aerating biological filter and hold
Support layer and the biologic packing material layer for being set to supporting layer, water distribution system are connected to upflow type aerating biological filter and cyclic system by water pipe
System corresponds to biologic packing material layer, and gas distribution system is connected to upflow type aerating biological filter by tracheae, corresponds to biologic packing material layer,
Backwashing system is connected to upflow type aerating biological filter, corresponds to biologic packing material layer, and effluent weir is set to up flow type aeration and biological
The top in filter tank, and corresponding biologic packing material layer.
An embodiment according to the present utility model, above-mentioned water distribution system include water distribution water pump, the first cloth penstock and
The import of an at least fluid flowmeter, water distribution water pump is connected to wastewater disposal basin by water pipe, and the import of the first cloth penstock passes through water pipe
It is connected to water distribution water pump and the circulatory system, at least inlet and outlet of a fluid flowmeter is connected to the first cloth water valve by water pipe respectively
Door and upflow type aerating biological filter.
An embodiment according to the present utility model, above-mentioned each fluid flowmeter are connected to by the second cloth penstock
Streaming biological aerated filter.
An embodiment according to the present utility model, above-mentioned gas distribution system include gas distribution air pump and an at least gas flow
Meter, at least a gas flowmeter are connected to gas distribution air pump by tracheae, and each gas flowmeter is connected to up flow type by gas valve
Biological aerated filter.
An embodiment according to the present utility model, above-mentioned backwashing system include backwash pump and backwash gas
Pump, backwash pump are connected to upflow type aerating biological filter by backwashing water pipe, and backwash air pump is connected by back flush valves
Logical upflow type aerating biological filter.
An embodiment according to the present utility model, the above-mentioned circulatory system include the cycle pump housing and circulating liquid flow
Meter, the import for recycling the pump housing are connected to nitrosation system by circulating water pipe, and the import of circulating liquid flowmeter passes through circulating water pipe
The outlet of the cycle pump housing is connected to circulating liquid valve, the outlet of circulating liquid flowmeter is connected to water pipe by circulating water pipe.
Compared with prior art, the utility model can be obtained including following technique effect：
The up flow type water distribution gas distribution denitrification of the utility model and nitrosation biofilter, make biologic packing material in biofilter
The whole biofacies having compared with horn of plenty, can improve the processing energy of up flow type water distribution gas distribution denitrification and nitrosation biofilter
Power, in the case that aeration quantity is relatively low, carbon source is less, by being carried out in up flow type water distribution gas distribution denitrification and nitrosation biofilter
Short-cut nitrification and denitrification reacts, and realizes the removal to COD, TN in waste water.
Description of the drawings
Fig. 1 is the structure of up flow type the water distribution gas distribution denitrification and nitrosation biofilter of one embodiment of the utility model
Schematic diagram.
Specific implementation mode
Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit this practicality newly
Type.That is, in some embodiments of the utility model, the details in these practices is non-essential.In addition, for letter
For the sake of changing schema, some known usual structures will be painted it in a manner of simply illustrative in the drawings with component.
About its " first " used herein, " second " etc., the meaning of order or cis-position is not especially censured, also non-use
The component described with same technique term just for the sake of difference with limiting the utility model or operation.
Referring to Fig. 1, it is the up flow type water distribution gas distribution denitrification and nitrosation biology of one embodiment of the utility model
The structural schematic diagram in filter tank.As shown, the utility model discloses a kind of up flow type water distribution gas distribution denitrification and nitrous metaplasia
Object filter tank comprising denilrification system 1, nitrosation system 2 and the circulatory system 3.Nitrosation system 2 is connected to denilrification system 1, follows
Loop system 3 is connected to nitrosation system 2 and denilrification system 1.First, waste water is passed through denilrification system 1, and waste water passes through denitrification system
System 1 enters nitrosation system 2, and waste water stops 1 to 24 hour in denilrification system 1, and simultaneously, waste water is in nitrosation system 2
It stops 1 to 24 hour, waste water generates nitrosation reaction in denilrification system 1 and nitrosation system 2 respectively, respectively will be in waste water
NH3- N converts NO2-N；Secondly, the circulatory system 3 is by the waste water circulating reflux of nitrosation system 2 to denilrification system 1, nitrosation system
NO in system 22- the N and NH in denilrification system 13- N generates anti-nitration reaction, by the NH in the waste water of denilrification system 13-N
It is converted into nitrogen, simultaneously, the waste water in denilrification system 1 is passed through nitrosation system 2, the NO in denilrification system 12- N with
NH in nitrosation system 23- N generates anti-nitration reaction, by the NH in nitrosation system 23- N is converted into nitrogen, reaches while going
Except the purpose of COD and TN.
When concrete application, denilrification system 1 is consistent with the structure of nitrosation system 2 and operation logic, in the following, this practicality is new
Type will illustrate the structure and operation logic of denilrification system 1 and nitrosation system 2 by taking denilrification system 1 as an example.Denilrification system
1 includes upflow type aerating biological filter 11, water distribution system 12, gas distribution system 13, backwashing system 14 and effluent weir 15.Up flow type
Biological aerated filter 11 is connected to nitrosation system 2 by outlet pipe, and 11 inside of upflow type aerating biological filter has supporting layer 111
And be set to the biologic packing material layer 112 of supporting layer 111, water distribution system 12 by water pipe be connected to upflow type aerating biological filter 11 with
The circulatory system 3, water distribution system 12 correspond to biologic packing material layer 112, and gas distribution system 13 is connected to up flow type aeration and biological by tracheae and filters
Pond 11, gas distribution system 13 correspond to biologic packing material layer 112, and backwashing system 14 is connected to upflow type aerating biological filter 11, backwash
System 14 corresponds to biologic packing material layer 112, and effluent weir 15 is set to the top of upflow type aerating biological filter 11, and effluent weir 15 corresponds to
Biologic packing material layer 112.The Dissolved Oxygen concentration Control of upflow type aerating biological filter 11 is between 0 to 0.2 milligram/every liter, first,
Water distribution system 12 is passed through waste water to upflow type aerating biological filter 11, and simultaneously, gas distribution system 13 is passed through air to up flow type
Biological aerated filter 11, waste water cross with air in biologic packing material layer 112, and then, waste water is with air in biologic packing material layer 112
Nitrosation reaction occurs, by the NH in waste water3- N converts NO2-N.Backwashing system 14 backwashes upflow type aerating biological filter
11, prevent upflow type aerating biological filter 11 from causing up flow type water distribution gas distribution denitrification and nitrosation biofilter in the presence of blocking
Service efficiency reduces.Also, effluent weir 15 prevents the particle and biodegradable organic matter outflow up flow type aeration of waste water band
Biofilter 11.In the present embodiment, supporting layer 111 is made for steel plate.
Biologic packing material layer 112 is any one in haydite, granular activated carbon, volcanic rock, zeolite, haydite, seed activity
Charcoal, volcanic rock, the particle that zeolite is 1 to 10 millimeter, the height of biologic packing material layer 112 is between 3 to 9 meters, water distribution system 12
The both ends of biologic packing material layer corresponding with gas distribution system 13 112.
Water distribution system 12 includes water distribution water pump 121, the first cloth penstock 122 and an at least fluid flowmeter 123.Water distribution water
The import of pump 121 is connected to wastewater disposal basin by water pipe, the import of the first cloth penstock 122 by water pipe be connected to water distribution water pump 121 with
The circulatory system 3, at least inlet and outlet of a fluid flowmeter 123 respectively by water pipe be connected to the first cloth penstock 122 with it is upper
Streaming biological aerated filter 11.Each fluid flowmeter 123 is connected to upflow type aerating biological filter by the second cloth penstock 124
11.Water distribution water pump 121 transmits waste water to the first cloth penstock 122, and waste water passes through the first cloth penstock 122, at least a liquid flow
Gauge 123 and the second cloth penstock 124 enter biologic packing material layer 112, and an at least fluid flowmeter 123 record is passed through waste water
Amount, when the amount for transmitting waste water reaches predetermined value, water distribution water pump 121 is stopped, the first cloth penstock 122 and the second water distribution
Valve 124 is closed.Also, in the present invention, at least the quantity of a fluid flowmeter 123 can be according to biologic packing material layer 112
Height be adjusted, in the present embodiment, the height of biologic packing material layer 122 is between 3 to 9 meters, accordingly, at least one
The quantity of fluid flowmeter 123 is three, and the interval of each fluid flowmeter 123 is between 1 to 3 meter, three fluid floies
The connection water pipe balance setting of meter 123, the wastewater flow rate that is passed through of three fluid flowmeters 123 from bottom to up are reduced successively so that on
The whole nutrition supplying biological growth having compared with horn of plenty of biologic packing material layer 122 of streaming biological aerated filter 11, biologic packing material layer
122 treatment effeciency is promoted.Second cloth penstock 124 plays the role of control waste water and enters upflow type aerating biological filter 11,
When upflow type aerating biological filter 11 handles less amount of waste water, the second cloth penstock 124 is optionally closed, section is reached
Purpose about.
Gas distribution system 13 includes gas distribution air pump 131 and an at least gas flowmeter 132, and an at least gas flowmeter 132 is logical
Tracheae connection gas distribution air pump 131 is crossed, each gas flowmeter 132 is connected to upflow type aerating biological filter by gas valve 133
11.Gas distribution air pump 131 transmits air to an at least gas flowmeter 132, and an at least gas flowmeter 132 transmits air to biology
The quantity of packing layer 112, at least a gas flowmeter 132 record transmission air, when the quantity of transmission air reaches predetermined value
When, gas valve 133 is closed, and transmission air is stopped.Also, in the present embodiment, the height of biologic packing material layer 112 is between 3
To between 9 meters, accordingly, at least the quantity of a gas flowmeter 132 is three, and the interval of each gas flowmeter 132 is between 1
To between 3 meters, the outlet of each gas flowmeter 132 corresponds to the outlet of each fluid flowmeter 123, the waste water of the two transmission
It crosses in biologic packing material layer 112 with air.Gas valve 133 plays control air and enters upflow type aerating biological filter 11
Effect is optionally closed gas valve 133, is reached when upflow type aerating biological filter 11 handles less amount of waste water
The purpose of saving.Also, the air capacity that is passed through of three gas flowmeters 132 from bottom to up is reduced successively so that up flow type is aerated
The whole nutrition supplying biological growth having compared with horn of plenty of biologic packing material layer 122 of biofilter 11, the processing of biologic packing material layer 122
Improved efficiency.
Backwashing system 14 includes backwash pump 141 and backwash air pump 142, the inlet communication of backwash pump 141
The outlet of the outlet of upflow type aerating biological filter 11, backwash pump 142 is connected to up flow type aeration life by backwashing water pipe
Object filter tank 11, backwash air pump 142 are connected to upflow type aerating biological filter 11 by back flush valves 143.When biologic packing material layer
When 112 presence block, while starting backwash pump 141 and backwash air pump 142, backwash pump 141 and backwash air pump
142 transmit water and gas flushing biologic packing material layer 112 simultaneously, are backwashed to biologic packing material layer 112.Also, in this embodiment party
In formula, when need to only use water backwashing, it may be selected to close back flush valves 143, and then backwash air pump 142 is prevented to be passed through recoil
Gas washing body enters upflow type aerating biological filter 11.
Similarly, nitrosation system 2 is by the NH in waste water3- N converts NO2- N, to realize while remove the mesh of COD and TN
's.
Up flow type water distribution gas distribution denitrification, according to the water quality into waste water, adjusts 12 He of water distribution system with nitrosation biofilter
Gas distribution system 13 into wastewater flow rate and air capacity, water distribution system 12 and gas distribution system 13 from bottom to up, into wastewater flow rate and air capacity
It reduces successively, upflow type aerating biological filter 11 has waste water to enter with air from below to up, makes the lower end of biologic packing material layer 112
Preferable catalytic action is played with upper end, improves the catalysis oxidation of up flow type water distribution gas distribution denitrification and nitrosation biofilter
Efficiency
The circulatory system 3 includes the cycle pump housing 31 and circulating liquid flowmeter 32, and the import of the cycle pump housing 31 passes through recirculated water
Pipe is connected to nitrosation system 2, and the import of circulating liquid flowmeter 32 is connected to cycle by circulating water pipe with circulating liquid valve 33
The outlet of the outlet of the pump housing 31, circulating liquid flowmeter 32 is connected to water pipe by circulating water pipe.First, waste water is passed through denitrification system
System 1, waste water enter nitrosation system 2 by denilrification system 1, and waste water stops 1 to 24 hour in denilrification system 1, same in this
When, waste water stops 1 to 24 hour in nitrosation system 2, and waste water generates nitrous in denilrification system 1 and nitrosation system 2 respectively
Change reaction, respectively by the NH in waste water3- N converts NO2-N；Secondly, the waste water of nitrosation system 2 is extracted cycle by the cycle pump housing 31
It is back to denilrification system 1, the NO in nitrosation system 22- the N and NH in denilrification system 13- N generates anti-nitration reaction, will
NH in the waste water of denilrification system 13- N is converted into nitrogen, and simultaneously, the waste water in denilrification system 1 is passed through nitrosation system
System 2, the NO in denilrification system 12- the N and NH in nitrosation system 23- N generates anti-nitration reaction, will be in nitrosation system 2
NH3- N is converted into nitrogen, achievees the purpose that while removing COD and TN.Recycle the pump housing 31 extract the waste water of nitrosation system 2 with it is upper
11 waste water ratio of streaming biological aerated filter is between 0.5 to 4 so that the waste water nitrosation of upflow type aerating biological filter 11
Reaction optimizes.
As 100 milligrams/every liter of the waste water COD concentration that water distribution system 12 is passed through, NH3A concentration of 15 milligrams/every liter of-N, TN is dense
When degree is 15 milligrams/every liter, for 1 Dissolved Oxygen concentration Control of denilrification system at 0.1 milligram/every liter, 2 dissolved oxygen of nitrosation system is dense
Degree control is between 0.8 to 1 milligram/every liter, and the cycle pump housing 31 extracts the waste water of nitrosation system 2 and up flow type aeration and biological is filtered
11 waste water ratio of pond is 1；The up flow type water distribution gas distribution denitrification of the utility model and nitrosation biofilter effluent COD concentration 20
To 30 milligrams/every liter, NH3A concentration of 1 to 4 milligram/every liter of a concentration of 0.2 to 1 milligram/every liter of-N, TN, reach first grade discharging mark
It is accurate.
As 200 milligrams/every liter of the waste water COD concentration that water distribution system 12 is passed through, NH3A concentration of 30 milligrams/every liter of-N, TN is dense
When degree is 30 milligrams/every liter, for 1 Dissolved Oxygen concentration Control of denilrification system at 0.1 milligram/every liter, 2 dissolved oxygen of nitrosation system is dense
Degree control is between 0.8 to 1 milligram/every liter, and the cycle pump housing 31 extracts the waste water of nitrosation system 2 and up flow type aeration and biological is filtered
11 waste water ratio of pond is 1；The up flow type water distribution gas distribution denitrification of the utility model and nitrosation biofilter effluent COD concentration 30
To 50 milligrams/every liter, NH3A concentration of 2 to 6 milligrams/every liter of a concentration of 0.5 to 1 milligram/every liter of-N, TN, reach first grade discharging mark
It is accurate.
As 100 milligrams/every liter of the waste water COD concentration that water distribution system 12 is passed through, NH3A concentration of 20 milligrams/every liter of-N, TN is dense
When degree is 20 milligrams/every liter, for 1 Dissolved Oxygen concentration Control of denilrification system at 0.1 milligram/every liter, 2 dissolved oxygen of nitrosation system is dense
Degree control is between 0.8 to 1 milligram/every liter, and the cycle pump housing 31 extracts the waste water of nitrosation system 2 and up flow type aeration and biological is filtered
11 waste water ratio of pond is 1；The up flow type water distribution gas distribution denitrification of the utility model and nitrosation biofilter effluent COD concentration 20
To 40 milligrams/every liter, NH3A concentration of 3 to 7 milligrams/every liter of a concentration of 0.5 to 1 milligram/every liter of-N, TN, reach first grade discharging mark
It is accurate.
In conclusion in one or more embodiments of the utility model, the up flow type water distribution gas distribution of the utility model is anti-
Nitrification and nitrosation biofilter make the whole biofacies having compared with horn of plenty of biologic packing material in biofilter, can improve upstream
The processing capacity of formula water distribution gas distribution denitrification and nitrosation biofilter, in the case that aeration quantity is relatively low, carbon source is less, by
Up flow type water distribution gas distribution denitrification carries out short-cut nitrification and denitrification with nitrosation biofilter and reacts, and realizes to COD, TN in waste water
Removal.
The embodiment of upper described only the utility model, is not intended to limit the utility model.For this field
For technical staff, various modifications and changes may be made to the present invention.The interior institute of all spirit and principle in the utility model
Any modification, equivalent substitution, improvement and etc. of work should all be included within the right of the utility model.
Claims (6)
1. a kind of up flow type water distribution gas distribution denitrification and nitrosation biofilter, which is characterized in that including：Denilrification system (1),
Nitrosation system (2) and the circulatory system (3), the nitrosation system (2) are connected to the denilrification system (1), the cyclic system
System (3) is connected to the nitrosation system (2) and the denilrification system (1)；And
The wherein described denilrification system (1) includes：Upflow type aerating biological filter (11), water distribution system (12), gas distribution system
(13), backwashing system (14) and effluent weir (15), described in the upflow type aerating biological filter (11) is connected to by outlet pipe
Nitrosation system (2), the upflow type aerating biological filter (11) is internal to be had supporting layer (111) and is set to the supporting layer
(111) biologic packing material layer (112), the water distribution system (12) are connected to the upflow type aerating biological filter (11) by water pipe
With the circulatory system (3), the biologic packing material layer (112) is corresponded to, the gas distribution system (13) is connected to the upstream by tracheae
Formula biological aerated filter (11), corresponds to the biologic packing material layer (112), and the backwashing system (14) is connected to the up flow type
Biological aerated filter (11), corresponds to the biologic packing material layer (112), and the effluent weir (15) is set to the up flow type aeration
The top of biofilter (11), and the corresponding biologic packing material layer (112).
2. up flow type water distribution gas distribution denitrification according to claim 1 and nitrosation biofilter, which is characterized in that described
Water distribution system (12) includes water distribution water pump (121), the first cloth penstock (122) and an at least fluid flowmeter (123), the cloth
The import of water water pump (121) is connected to wastewater disposal basin by water pipe, and the import of the first cloth penstock (122) is connected to institute by water pipe
Water distribution water pump (121) and the circulatory system (3) are stated, the inlet and outlet of an at least fluid flowmeter (123) passes through water respectively
Pipe is connected to the first cloth penstock (122) and upflow type aerating biological filter (11).
3. up flow type water distribution gas distribution denitrification according to claim 2 and nitrosation biofilter, which is characterized in that each
Fluid flowmeter (123) is connected to the upflow type aerating biological filter (11) by the second cloth penstock (124).
4. up flow type water distribution gas distribution denitrification according to claim 1 and nitrosation biofilter, which is characterized in that described
Gas distribution system (13) includes gas distribution air pump (131) and an at least gas flowmeter (132), an at least gas flowmeter
(132) the gas distribution air pump (131) is connected to by tracheae, each gas flowmeter (132) is connected to institute by gas valve (133)
State upflow type aerating biological filter (11).
5. up flow type water distribution gas distribution denitrification according to claim 1 and nitrosation biofilter, which is characterized in that described
Backwashing system (14) includes backwash pump (141) and backwash air pump (142), and the backwash pump (141) is by anti-
Wash tub pipe is connected to the upflow type aerating biological filter (11), and the backwash air pump (142) passes through back flush valves (143)
It is connected to the upflow type aerating biological filter (11).
6. up flow type water distribution gas distribution denitrification according to claim 1 and nitrosation biofilter, which is characterized in that described
The circulatory system (3) includes the cycle pump housing (31) and circulating liquid flowmeter (32), and the import of the cycle pump housing (31) is by following
Ring water pipe is connected to the nitrosation system (2), and the import of the circulating liquid flowmeter (32) passes through circulating water pipe and circulation fluid
The outlet of body valve (33) the connection cycle pump housing (31), the outlet of the circulating liquid flowmeter (32) passes through circulating water pipe
It is connected to water pipe.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113559700A (en) * | 2021-08-12 | 2021-10-29 | 北京新绿祥瑞环保科技有限公司 | Denitrifying biological filter for waste gas deodorization |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113559700A (en) * | 2021-08-12 | 2021-10-29 | 北京新绿祥瑞环保科技有限公司 | Denitrifying biological filter for waste gas deodorization |
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