CN207276425U - Sewage-treatment plant with biofilter and artificial wet land system - Google Patents
Sewage-treatment plant with biofilter and artificial wet land system Download PDFInfo
- Publication number
- CN207276425U CN207276425U CN201721192827.2U CN201721192827U CN207276425U CN 207276425 U CN207276425 U CN 207276425U CN 201721192827 U CN201721192827 U CN 201721192827U CN 207276425 U CN207276425 U CN 207276425U
- Authority
- CN
- China
- Prior art keywords
- biofilter
- air flotation
- wet land
- artificial wet
- land system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model is a kind of sewage-treatment plant with biofilter and artificial wet land system, including stirring pool, cavitation air flotation sedimentation basin, biofilter, biofilter discharge bay, artificial wet land system, roots blower, the cavitation air flotation sedimentation basin includes contact zone of dissolved air flotation, air flotation zone, cone-shaped collection bucket, it is characterised in that：The stirring pool, contact zone of dissolved air flotation, air flotation zone, biofilter, biofilter discharge bay, artificial wet land system are sequentially connected；Cavltation aerator is equipped with the contact zone of dissolved air flotation；The air flotation zone bottom is equipped with cavitation air flotation return duct；Ceramics filling layer, aerating system, filtration system, waste water collection tank are equipped with the biofilter, the biofilter bottom is connected by the filtration system with biofilter discharge bay；The artificial wet land system is vertical subsurface flow wetland, and totally 4 layers from top to bottom of artificial wet land system, is followed successively by plantation layer, the first gravel layer, the second gravel layer, sand stone layer.
Description
Technical field
A kind of sewage-treatment plant is the utility model is related to, one kind is particularly disclosed and carries biofilter and artificial swamp system
The sewage-treatment plant of system.
Background technology
Livestock and poultry cultivation sewage quantity that current nationwide scaleization farm discharges daily is big, concentrates, and contains greatly in sewage
Pollutant is measured, such as CODcr, ammonia nitrogen, heavy metal, remaining veterinary drug and substantial amounts of pathogen, are such as directly discharged without processing,
It will cause seriously to pollute, its main harm is as follows：
1st, to the harm of water body：Aquaculture sewage belongs to the high concentration organic sewage containing a large amount of pathogen, large amount of organic
After matter enters water body, the dissolved oxygens in a large amount of consumption water are made water body smelly, cause aquatile largely dead by the decomposition of organic matter
Die；Nitrogen, phosphorus can make body eutrophication.
2nd, to the harm of atmospheric environment：Livestock and poultry cultivation sewage can produce substantial amounts of NH under anaerobic conditions3、H2The effluviums such as S
Body, these foul gas will influence and endanger the health of keeper and surrounding resident.
3rd, to the harm in farmland and crop：Containing nutrients such as more nitrogen, phosphorus, potassium in livestock and poultry breeding industry sewage, if not
Administration through any processing just directly, continuous, excessive, then can cause undesirable influence to the growth of soil and crops, such as draw
Playing crop yield reduces, postpones maturity period, the production for influencing succeeding crop etc..
Current cultivation industry, small medium-and-large-sized farm are designed with special sewage disposal system, are realized by process combination
Sewage disposal target, but for miniature farm, it is relatively fewer to go out sewage quantity daily, is usually 2-10T/D, this raiser
It is also very big to occupy ratio, and such raiser's fund is few, demand is big, it is difficult to there is the sewage disposal for meeting their demands
System, and since miniature farm staff is few, the typically no personnel for being responsible for sewage discharging management specially, cause to enter
The sewage impurity of sewage disposal system is more, and big impact is easily caused to equipment.
The content of the invention
The purpose of this utility model is that the defects of solving the prior art, there is provided one kind carries biofilter and artificial swamp
The sewage-treatment plant of system, goes out that sewage quantity is relatively fewer, fund is few, using face daily for the raiser of miniature farm
The characteristics of product is big, the core process of livestock and poultry cultivation sewage disposal is focused in an equipment, achievees the purpose that sewage disposal, and
And the utility model is more preferable for the wastewater treatment efficiency that suspended particulate content is big, organic concentration is low.
The utility model is realized in this way：A kind of sewage-treatment plant with biofilter and artificial wet land system,
It is described including stirring pool, cavitation air flotation sedimentation basin, biofilter, biofilter discharge bay, artificial wet land system, roots blower
Cavitation air flotation sedimentation basin includes contact zone of dissolved air flotation, air flotation zone, cone-shaped collection bucket, it is characterised in that：The stirring pool, air supporting contact
Area, air flotation zone, biofilter, biofilter discharge bay, artificial wet land system are sequentially connected；Whirlpool is equipped with the contact zone of dissolved air flotation
Recessed aerator；The air flotation zone bottom connects the cone-shaped collection bucket, and Slag Scraping Device and waste residue collecting tank, bottom are equipped with the top of air flotation zone
Portion is equipped with cavitation air flotation return duct, is equipped with collecting pipe above the cavitation air flotation return duct, the air flotation zone passes through the collection
Pipe is connected with biofilter；Ceramics filling layer, aerating system, filtration system, waste water collection tank, institute are equipped with the biofilter
State biofilter bottom to be connected with biofilter discharge bay by the filtration system, it is stainless that the filtration system includes several
Steel filter cap, filtration system top are equipped with the aerating system, and the aerating system includes several aeration plates, aerating system top
Equipped with the ceramics filling layer, the roots blower connects several aeration plates respectively, and the waste water collection tank is arranged on biology
At the top of filter tank；The artificial wet land system is vertical subsurface flow wetland, and totally 4 layers from top to bottom of artificial wet land system, is followed successively by
Layer, the first gravel layer, the second gravel layer, sand stone layer are planted, kind is implanted with water plant on the plantation layer, and the biofilter goes out
Pond connects the plantation layer, and the first gravel layer grain size of gravel is 15-30mm, and the second gravel layer grain size of gravel is 5-
10mm, the sand stone layer gravel size are 30-40mm, and the artificial wet land system is by being arranged on the Manual moist of sand stone layer bottom
Ground system outlet pipe connection artificial wet land system discharge bay.
The stirring pool bottom is equipped with support column, side surface upper part is equipped with wastewater influent pipeline, top is equipped with adding of agent pipe
Road, speed mixer is equipped with the stirring pool, and the stirring pool passes through water outlet and the air supporting that its side bottom is set
Contact zone connects.The contact zone of dissolved air flotation by the cavitation air flotation return duct and is arranged on contact zone of dissolved air flotation side top respectively
Water outlet connection air flotation zone.The bottom of the biofilter discharge bay connects the plantation layer by the first solenoid valve, passes through
Second solenoid valve connects the artificial wet land system discharge bay.The waste water collection tank connects backwash water outlet pipe.It is described some
The quantity of a aeration plate is 5-30.The quantity of several stainless steel filter caps is 6-30.
The part that the artificial wet land system outlet pipe is located in the sand stone layer is equipped with several equally distributed apertures
For catchmenting.
The beneficial effects of the utility model are：The utility model is simple in structure, daily management is simple and convenient to operate, sewage
High treating effect, energy conservation and environmental protection.The utility model for suspended particulate content is big, organic concentration is low wastewater treatment efficiency more
It is good.The speed mixer of the utility model stirring pool can make medicament play one's part to the full to produce larger alumen ustum, then through place
The sewage of reason enters air flotation zone after being sufficiently mixed in contact zone of dissolved air flotation and microbubble, is scraped scum silica frost by Slag Scraping Device in air flotation zone
Into waste residue collecting tank, the big flocculation group not floated then is deposited in cone-shaped collection bucket, and waste residue collecting tank and taper are received
Dirt in collection bucket is periodically cleared up according to sewage load, and the water after air-flotation process is entered in biofilter, raw
Ceramics filling is equipped with thing filter tank and aerating system, bottom are equipped with filtration system, and activated sludge is attached on ceramics filling, so
Can more fully it react with Organic substance in water matter, the water after biochemistry enters biofilter water outlet by filtration system
Water is delivered to artificial wet land system by the first solenoid valve, is spent by artificial wet land system by pond, biofilter discharge bay
The material such as remaining organic matter, ammonia nitrogen, phosphorus in water removal, after composite technology, the utility model water outlet can meet field irrigation mark
Quasi- discharge；After the utility model runs a period of time, artificial wet land system water outlet can be utilized by second solenoid valve to life
The filtration system in thing filter tank carries out backwash, to ensure filter effect and water outlet quality.The of the utility model artificial wet land system
One gravel layer, the grain size of gravel of the second gravel layer diminish successively, and this design causes artificial wet land system to be not easy to plug, and goes out water quality
Measure, avoid conventional manual's wet land system in Practical Project and easily made because upper strata ballast grain sizes are small, lower floor's ballast grain sizes are big
Into the problem of blocking, the sand stone layer gravel size of the utility model artificial wet land system is bigger than the grain size of gravel of the second gravel layer,
Prevent the small gravel on upper strata enters to be formed in the aperture on artificial wet land system outlet pipe from blocking.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1st, speed mixer；2nd, Cavltation aerator；3rd, Slag Scraping Device；4th, waste residue collecting tank；5th, collecting pipe； 6、
Cavitation air flotation return duct；7th, cone-shaped collection bucket；8th, stainless steel filter cap；9th, aeration plate；10th, ceramics filling layer；11st, Roots
Wind turbine；12nd, backwash water outlet pipe；13rd, artificial wet land system；14th, waste water collection tank；15th, artificial wet land system outlet pipe；
16th, the first solenoid valve；17th, second solenoid valve；18th, stirring pool；19th, contact zone of dissolved air flotation；20th, air flotation zone；21st, biological filter
Pond；22nd, biofilter discharge bay；23rd, wastewater influent pipeline；24th, adding of agent pipeline；25th, support column.
Embodiment
With reference to the accompanying drawings 1, a kind of sewage-treatment plant with biofilter and artificial wet land system of the utility model, including
Stirring pool 18, cavitation air flotation sedimentation basin, biofilter 21, biofilter discharge bay 22, artificial wet land system 13, roots blower
11, the cavitation air flotation sedimentation basin includes contact zone of dissolved air flotation 19, air flotation zone 20, cone-shaped collection bucket 7, the stirring pool 18, air supporting
Contact zone 19, air flotation zone 20, biofilter 21, biofilter discharge bay 22, artificial wet land system 13 are sequentially connected；The air supporting
Cavltation aerator 2 is equipped with contact zone 19；20 bottom of air flotation zone connects the cone-shaped collection bucket 7, and the top of air flotation zone 20 is set
There are Slag Scraping Device 3 and waste residue collecting tank 4, bottom to be equipped with cavitation air flotation return duct 6, the top of cavitation air flotation return duct 6, which is equipped with, receives
Collector 5, the air flotation zone 20 are connected by the collecting pipe 5 with biofilter 21；Filled out in the biofilter 21 equipped with haydite
The bed of material 10, aerating system, filtration system, waste water collection tank 14,21 bottom of biofilter pass through the filtration system and life
Thing filter tank discharge bay 22 connects, and the filtration system includes several stainless steel filter caps 8, and the aeration is equipped with above filtration system
System, the aerating system include several aeration plates 9, the ceramics filling layer 10, the Roots are equipped with above aerating system
Wind turbine 11 connects several aeration plates 9 respectively, and the waste water collection tank 14 is arranged on the top of biofilter 21；The artificial swamp
System 13 is vertical subsurface flow wetland, totally 4 layers from top to bottom of artificial wet land system 13, be followed successively by plantation layer, the first gravel layer,
Second gravel layer, sand stone layer, it is described plantation layer on kind be implanted with water plant, the biofilter discharge bay 22 connects the plantation
Layer, the first gravel layer grain size of gravel is 15-30mm, and the second gravel layer grain size of gravel is 5-10mm, the sand stone layer
Gravel size is 30-40mm, and the artificial wet land system 13 is by being arranged on the artificial wet land system outlet pipe of sand stone layer bottom
15 connection artificial wet land system discharge bays.
18 bottom of stirring pool is equipped with support column 25, side surface upper part is equipped with wastewater influent pipeline 23, top is equipped with medicament
Pipeline 24 is added, speed mixer 1, the water outlet that the stirring pool 18 is set by its side bottom are equipped with the stirring pool 18
Mouth is connected with the contact zone of dissolved air flotation 19.The contact zone of dissolved air flotation 19 by the cavitation air flotation return duct 6 and is arranged on respectively
The water outlet connection air flotation zone 20 of 19 side top of contact zone of dissolved air flotation.The bottom of the biofilter discharge bay 22 passes through the first electricity
Magnet valve 16 connects the plantation layer, connects the artificial wet land system discharge bay by second solenoid valve 17.The wastewater collection
Groove 14 connects backwash water outlet pipe 12.The quantity of several aeration plates 9 is 5-30.Several described stainless steel filter caps 8
Quantity be 6-30.
It is equally distributed small that the part that the artificial wet land system outlet pipe 15 is located in the sand stone layer is equipped with several
Hole is used to catchment.
During utility model works, sewage enters stirring pool 18 from the wastewater influent pipeline 23, is thrown by the medicament
Pipeline 24 is added to launch PAC, PAM medicament in stirring pool 18, the speed mixer 1 makes medicament sufficiently be mixed with sewage, and
Larger alumen ustum is produced, then processed sewage is filled in the microbubble that the contact zone of dissolved air flotation 19 is produced with Cavltation aerator 2
Air flotation zone 20 is entered after dividing mixing, is scraped the scum silica frost on 20 surface of air flotation zone, foam by the Slag Scraping Device 3 in air flotation zone 20
In waste residue collecting tank 4, the big flocculation group not floated then is deposited in the cone-shaped collection bucket 7, waste residue collecting tank 4 and cone
Dirt in shape collection bucket 7 is periodically cleared up according to sewage load, and the water after air-flotation process passes through the collecting pipe 5
Enter in biofilter 21, ceramics filling is equipped with biofilter 21 and aerating system, bottom are equipped with filtration system, activity is dirty
Mud is attached on ceramics filling, so can more fully be reacted with Organic substance in water matter, the water after biochemistry passes through
Filtration system enters biofilter discharge bay 22, and water is delivered to Manual moist by biofilter discharge bay 22 by the first solenoid valve 16
Ground system 13, removes the material such as remaining organic matter, ammonia nitrogen, phosphorus in water removal by the effect of artificial wet land system 13, then passes through people
Work wet land system outlet pipe 15 enters artificial wet land system discharge bay, and after composite technology, the utility model water outlet can meet agriculture
Field irrigation norm discharge.The roots blower 11 connects several aeration plates 9 and is used to be aerated respectively；The Cavltation aerator 2 exists
While producing microbubble, a negative pressuren zone can be formed in the bottom of pond of air flotation zone 20, this suction function can make sewage from air supporting
The bottom in area 20 is back to contact zone of dissolved air flotation 19 by cavitation air flotation return duct 6, and the sewage this process ensures 40% or so returns
Air supporting section is still operable in the case of stream and no water inlet.
After a period of time is run in biofilter 21（Generally 2-3D）, the first solenoid valve 16 is closed, opens the second electromagnetism
Valve 17, accesses 13 water outlet of artificial wet land system, water rinses the organic matter adhered in stainless steel filter cap 8 by second solenoid valve 17
Falling, flushing waste water is discharged by backwash water outlet pipe 12, and during system normal operation, second solenoid valve 17 is in off state, and first
Solenoid valve 16 is opening.
The utility model is simple in structure, daily management is simple and convenient to operate, good sewage processing effect, energy conservation and environmental protection.This reality
With new more preferable for suspended particulate content is big, organic concentration is low wastewater treatment efficiency.The utility model stirring pool 18
Speed mixer 1 can make medicament play one's part to the full to produce larger alumen ustum, and then processed sewage is in contact zone of dissolved air flotation
19 with microbubble be sufficiently mixed after enter air flotation zone 20, scum silica frost is scraped by waste residue collecting tank 4 by Slag Scraping Device 3 in air flotation zone 20
In, the big flocculation group not floated then is deposited in cone-shaped collection bucket 7, the dirt in waste residue collecting tank 4 and cone-shaped collection bucket 7
Thing is periodically cleared up according to sewage load, and the water after air-flotation process is entered in biofilter 21, biofilter 21
In be equipped with ceramics filling and aerating system, bottom and be equipped with filtration system, activated sludge is attached on ceramics filling, so can be more
Sufficiently reacting with Organic substance in water matter, the water after biochemistry enters biofilter discharge bay 22 by filtration system,
Water is delivered to artificial wet land system 13 by biofilter discharge bay 22 by the first solenoid valve 16, is made by artificial wet land system 13
Spend the material such as remaining organic matter, ammonia nitrogen, phosphorus in water removal, after composite technology, the utility model water outlet can meet farmland irrigating
Irrigate effluent standard；After the utility model runs a period of time, artificial wet land system 13 can be utilized by second solenoid valve 17
Water outlet carries out backwash to the filtration system of biofilter 21, to ensure filter effect and water outlet quality.The utility model Manual moist
The first gravel layer, the grain size of gravel of the second gravel layer of ground system 13 diminish successively, and this design is so that artificial wet land system 13
It is not easy to plug, effluent characteristics are good, avoid in Practical Project conventional manual's wet land system because upper strata ballast grain sizes are small, lower floor's rubble
The problem of particle diameter be easy to cause blocking greatly, the sand stone layer gravel size of the utility model artificial wet land system 13 is than the second gravel
The grain size of gravel of layer is big, prevents the small gravel on upper strata enters to be formed in the aperture on artificial wet land system outlet pipe 15 from blocking.
Claims (7)
1. a kind of sewage-treatment plant with biofilter and artificial wet land system, including stirring pool, cavitation air flotation sedimentation basin,
Biofilter, biofilter discharge bay, artificial wet land system, roots blower, the cavitation air flotation sedimentation basin are contacted including air supporting
Area, air flotation zone, cone-shaped collection bucket, it is characterised in that：The stirring pool, contact zone of dissolved air flotation, air flotation zone, biofilter, biological filter
Pond discharge bay, artificial wet land system are sequentially connected；Cavltation aerator is equipped with the contact zone of dissolved air flotation；The air flotation zone bottom connects
The cone-shaped collection bucket is connect, Slag Scraping Device is equipped with the top of air flotation zone and waste residue collecting tank, bottom is equipped with cavitation air flotation return duct, it is described
Collecting pipe is equipped with above cavitation air flotation return duct, the air flotation zone is connected by the collecting pipe with biofilter；The biology
Ceramics filling layer, aerating system, filtration system, waste water collection tank are equipped with filter tank, the biofilter bottom passes through the mistake
Filter system is connected with biofilter discharge bay, and the filtration system includes several stainless steel filter caps, is equipped with above filtration system
The aerating system, the aerating system includes several aeration plates, the ceramics filling layer is equipped with above aerating system, described
Roots blower connects several aeration plates respectively, and the waste water collection tank is arranged at the top of biofilter；The artificial swamp system
Unite as vertical subsurface flow wetland, totally 4 layers from top to bottom of artificial wet land system, is followed successively by plantation layer, the first gravel layer, the second gravel
Rock layers, sand stone layer, kind is implanted with water plant on the plantation layer, and the biofilter discharge bay connects the plantation layer, described
First gravel layer grain size of gravel is 15-30mm, and the second gravel layer grain size of gravel is 5-10mm, the sand stone layer gravel size
For 30-40mm, the artificial wet land system connects Manual moist by being arranged on the artificial wet land system outlet pipe of sand stone layer bottom
Ground system discharge bay.
2. the sewage-treatment plant with biofilter and artificial wet land system according to claim 1, its feature exist
In：The stirring pool bottom is equipped with support column, side surface upper part is equipped with wastewater influent pipeline, top is equipped with adding of agent pipeline, institute
State and speed mixer is equipped with stirring pool, the stirring pool passes through the water outlet that its side bottom is set and the contact zone of dissolved air flotation
Connection.
3. the sewage-treatment plant with biofilter and artificial wet land system according to claim 1, its feature exist
In：The contact zone of dissolved air flotation passes through the cavitation air flotation return duct and the water outlet for being arranged on contact zone of dissolved air flotation side top respectively
Connect air flotation zone.
4. the sewage-treatment plant with biofilter and artificial wet land system according to claim 1, its feature exist
In：The bottom of the biofilter discharge bay connects the plantation layer by the first solenoid valve, connects institute by second solenoid valve
State artificial wet land system discharge bay.
5. the sewage-treatment plant with biofilter and artificial wet land system according to claim 1, its feature exist
In：The waste water collection tank connects backwash water outlet pipe.
6. the sewage-treatment plant with biofilter and artificial wet land system according to claim 1, its feature exist
In：The quantity of several aeration plates is 5-30.
7. the sewage-treatment plant with biofilter and artificial wet land system according to claim 1, its feature exist
In：The quantity of several stainless steel filter caps is 6-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192827.2U CN207276425U (en) | 2017-09-18 | 2017-09-18 | Sewage-treatment plant with biofilter and artificial wet land system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192827.2U CN207276425U (en) | 2017-09-18 | 2017-09-18 | Sewage-treatment plant with biofilter and artificial wet land system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207276425U true CN207276425U (en) | 2018-04-27 |
Family
ID=61982237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721192827.2U Active CN207276425U (en) | 2017-09-18 | 2017-09-18 | Sewage-treatment plant with biofilter and artificial wet land system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207276425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751598A (en) * | 2022-04-29 | 2022-07-15 | 优米耐(福建)智能科技有限公司 | Integrated sewage treatment equipment |
-
2017
- 2017-09-18 CN CN201721192827.2U patent/CN207276425U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751598A (en) * | 2022-04-29 | 2022-07-15 | 优米耐(福建)智能科技有限公司 | Integrated sewage treatment equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101531437B (en) | Compound treatment method of wastewater in pig farm | |
| US5630936A (en) | Vertical drainage drying bed for waste sludge and an intensified method of treating wastewater | |
| CN207108742U (en) | A kind of livestock/poultry wastewater treatment system | |
| CN102067824A (en) | Closed circulating seawater prawn pond culture system | |
| CN101481180A (en) | Purification treatment method and apparatus for pig raising waste liquid | |
| CN105836969B (en) | A kind of Wastewater from Pig Farm processing method | |
| CN209193725U (en) | A kind of combined-flow and more pool artificial marsh sewage treatment systems | |
| CN207845273U (en) | River and lake restoration of the ecosystem and water quality keep system | |
| CN101274805B (en) | Hydraulic oxygen increasing water self-cleaning screen | |
| CN115191395B (en) | Freshwater pond circulating water culture device and system | |
| CN107549083A (en) | A kind of fish pond containment systems and its application | |
| CN204689842U (en) | The ecological wastewater treatment system of vertical multistage AO | |
| CN207276426U (en) | Sewage-treatment plant with advection air supporting sedimentation basin and artificial wet land system | |
| CN207276425U (en) | Sewage-treatment plant with biofilter and artificial wet land system | |
| CN211339184U (en) | Domestic sewage integrated treatment equipment based on steel slag ceramsite filler biological filter | |
| CN105217893B (en) | A kind of Sloping Hearth subsurface flow constructed wetland combination system | |
| CN207276424U (en) | Sewage-treatment plant with advection air supporting sedimentation basin and biofilter | |
| CN207276427U (en) | Sewage-treatment plant with cavitation air flotation sedimentation basin and artificial wet land system | |
| CN1583604A (en) | Composite artificial wet land denitrifying and dephosphorizing method for living waste water vertical fluid-horizontal fluid | |
| CN207284796U (en) | A kind of fish pond stable breeding device | |
| CN207276428U (en) | Sewage-treatment plant with cavitation air flotation sedimentation basin and membrane bioreactor | |
| CN207276423U (en) | Sewage-treatment plant with cavitation air flotation sedimentation basin and biofilter | |
| CN214758650U (en) | High-density aquatic ecological breeding system | |
| CN109122545A (en) | A kind of pond bottom blowdown water quality improvement system | |
| CN205676333U (en) | A kind of system utilizing artificial wetland treatment slaughterhouse sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |