CN204529471U - The device of purifying water body - Google Patents

The device of purifying water body Download PDF

Info

Publication number
CN204529471U
CN204529471U CN201520109712.7U CN201520109712U CN204529471U CN 204529471 U CN204529471 U CN 204529471U CN 201520109712 U CN201520109712 U CN 201520109712U CN 204529471 U CN204529471 U CN 204529471U
Authority
CN
China
Prior art keywords
circular support
water body
purifying water
utility
fixed strip
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
Application number
CN201520109712.7U
Other languages
Chinese (zh)
Inventor
庄绪亮
徐圣君
庄国强
白志辉
孙海曙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Research Center for Eco Environmental Sciences of CAS
Original Assignee
Research Center for Eco Environmental Sciences of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Research Center for Eco Environmental Sciences of CAS filed Critical Research Center for Eco Environmental Sciences of CAS
Priority to CN201520109712.7U priority Critical patent/CN204529471U/en
Application granted granted Critical
Publication of CN204529471U publication Critical patent/CN204529471U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Landscapes

  • Biological Treatment Of Waste Water (AREA)

Abstract

The utility model discloses a kind of device of purifying water body, comprise the fixed strip that two circular support skeletons and some are serially connected with rhodococcus carrier, the head and the tail of described fixed strip are fixedly connected with two circular support skeletons respectively, some dividing strips arranged by a described circular support frame, this circular support skeleton is made to be divided into multiple grid, for planting aquatic plants in described grid; It is cursory that the described circular support skeleton being distributed with dividing strip is also fixed with.The device of the purifying water body that the utility model provides gives full play to the respective advantage of microorganism and phytoremediation, structure microflora is core (underwater portion) and the composite plant-microorganism remediation system of auxiliary phytoremediation system (water surface part), utilize the three-dimensional arrangement of water body at full capacity, realize the high-efficient purification to eutrophication water.

Description

The device of purifying water body
Technical field
The utility model relates to technical field of water pollution treatment, particularly relates to a kind of device utilizing plant-microorganism combined purifying water body.
Background technology
The eutrophication of current China water body is comparatively serious, especially the lake that current flowing is less, river course and wet land system, the pollutents such as major cause is ammonia nitrogen in water body, phosphorus, hydrogen sulfide, chemical oxygen demand (COD) (COD), biochemical oxygen demand (BOD) (BOD) exceed standard.Compared with conventional biological treatment unit (focusing on formula Sewage Plant), the features such as the systems such as lake, river course and wetland have that the water yield is large, the residence time long and discrete areas is wide in water, the bioremediation technology needing developing low-cost badly realizes pollutent abatement and the water ecology functional rehabilitation of original position.
Ecology-bioremediation technology is utilized to be the new technology that original position administers eutrophication water, utilize the vital movement of plant absorption or microorganism, realize shifting water pollutant, transforming and Degradation, mainly comprise biomembrance process, aquatic plant system, bacteria agent input method and river course reoxygenation method etc., but there is the problems such as marketing difficulty is large, the survival time of microbial bacteria in water body is short, use cost is higher in these methods.
Utility model content
In view of this, the purpose of this utility model is the device proposing a kind of purifying water body, to reduce the purification cost of water body, improves the purification efficiency of water body.
Based on above-mentioned purpose, the device of the purifying water body that the utility model provides comprises the fixed strip that two circular support skeletons and some are serially connected with rhodococcus carrier, the head and the tail of described fixed strip are fixedly connected with two circular support skeletons respectively, a described circular support skeleton is furnished with some dividing strips, this circular support skeleton is made to be divided into multiple grid, for planting aquatic plants in described grid; It is cursory that the described circular support skeleton being distributed with dividing strip is also fixed with.
In an embodiment of the present utility model, described fixed strip is selected from rigidity nylon rope or leather strap.
In another embodiment of the present utility model, described rhodococcus carrier is sprayed onto on soft microbe stuffing by rhodococcus fermented liquid, obtains after drying, and described soft microbe stuffing is selected from polypropylene filler bundle and/or polypropylene filler bundle.
In another preferred embodiment of the present utility model, described soft microbe stuffing is circular, is wrapped on ring, fibrous bundle is uniformly distributed by hydroformylation fiber or POLYESTER YARNS pressure, simulation natural waterweeds form processes, and the specific surface area of described soft microbe stuffing is 600 ~ 800m 2/ m 3.
In another embodiment of the present utility model, 8 ~ 10 fixed strips are evenly fixed between described two circular support skeletons, the length of described fixed strip is 1 ~ 2 meter, every meter of fixed strip is connected in series 6 ~ 8 rhodococcus carriers, the radius of described circular support skeleton is 50 ~ 80cm, and described grid is of a size of 2 ~ 4cm × 2 ~ 4cm.
In another embodiment of the present utility model, described waterplant is selected from least one in watermifoil, Canna generalis Bailey, Herba Eichhorniae, water peanut and calamus, and described circular support skeleton is made by least one in bamboo, rattan and wicker is bending.
In another embodiment of the present utility model, the planting density of described waterplant in grid is 10 ~ 20 strains/m 2.
As can be seen from above, the device of the purifying water body that the utility model provides gives full play to the respective advantage of microorganism and phytoremediation, structure microflora is core (underwater portion) and the composite plant-microorganism remediation system of auxiliary phytoremediation system (water surface part), utilize the three-dimensional arrangement of water body at full capacity, realize the high-efficient purification to eutrophication water, and there is landscape ecologic function.
Microflora of the present utility model is based on the red ball of efficient denitrification microbial inoculum of agricultural wastes bio-transformation, and provide for it flexible carrier surely grown rapidly, phytoremediation system is with nitrogen, phosphorus height enriching plant watermifoil, Canna generalis Baileys etc. are main, and for it provides can the bearing of following water-level lifting, formation root hole purifies, the multistage denitrogenation dephosphorizing measure of waterplant configuration and Tiny ecosystem purified in situ, to the less eutrophication water COD of current flowing, the clearance Absorbable organic halogens of nitrogen and phosphorus is more than 50%, practical function microorganism and plant pass through physics, to the quick absorption of water pollutant and degraded under chemistry and life assemblage condition.
The device of the purifying water body that the utility model provides have raw materials for production cheap (agriculture and forestry organic waste material), less investment, simple to operate, long service life and installation, convenient later maintenance, without the need to advantages such as energy consumptions.The utility model provides the brand-new route that is administered eutrophication water, has good economic benefit and social benefit, is particularly useful for the eutrophication water that current flowing is less.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bearing of the utility model embodiment purifying water body;
Fig. 2 is the structural representation at the device top of the utility model embodiment purifying water body;
Fig. 3 is the one-piece construction schematic diagram of the utility model embodiment purifying water body device.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
See Fig. 1 and Fig. 2, be respectively the structural representation at the bearing of the utility model embodiment purifying water body and the device top of purifying water body, Fig. 3 is the utility model embodiment purifying water body device one-piece construction schematic diagram.
As an embodiment of the present utility model, the device of described purifying water body comprises the fixed strip that two circular support skeletons 1 and some are serially connected with rhodococcus carrier 3, and the head and the tail of described fixed strip 2 are fixedly connected with two circular support skeletons 1 respectively.A described circular support skeleton arranges some dividing strips 5, makes this circular support skeleton 1 be divided into multiple grid, for planting aquatic plants 6 in described grid; The described circular support skeleton 1 being distributed with dividing strip 5 is also fixed with cursory 4.
Described rhodococcus carrier 3 refers to that load has the soft microbe stuffing of rhodococcus fermented liquid.Alternatively, described fixed strip 2 can be selected from rigidity nylon rope or leather strap.Preferably, the head and the tail two ends of described fixed strip 2 are not connected in series rhodococcus carrier 3, so that be fixed on circular support skeleton 1 by fixed strip 2.
As an embodiment of the present utility model, the making processes of the device of described purifying water body comprises the following steps:
1, microbial inoculum is prepared
Adopt aqueous sodium hydroxide solution or liming to regulate the pH of Sweet Potato Starch Processing Waste Water to 6.5 ~ 7.5, then in 121 DEG C of sterilizings 15 minutes, obtain through pretreated Sweet Potato Starch Processing Waste Water.To the described rhodococcus inoculating slant preservation in the triangular flask of pretreated Sweet Potato Starch Processing Waste Water is housed, in 30 DEG C, 150 revs/min shaking culture 24 ~ 36 hours, obtain liquid seeds.
Alternatively, this strain rhodococcus (Rhodococcus.sp) is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, preserving number: CGMCC No.6924.
Then, describedly in the fermentor tank of pretreated Sweet Potato Starch Processing Waste Water, inoculating the described liquid seeds that volume ratio is 2 ~ 15% to being equipped with, in 25 ~ 37 DEG C, passing into sterile air, cultivating 15 ~ 36 hours.Cultivate the fermentation liquor count plate after terminating, viable count reaches 1.5 × 10 9more than CFU/ml.
The utility model utilizes Sweet Potato Starch Processing Waste Water cultivation rhodococcus can reduce the production cost of rhodococcus, by sweet potato utilization of wastewater resource, can save the expense of Sweet Potato Starch Processing Waste Water process, kill two birds with one stone again.
2, the device of purifying water body is assembled
(1) rhodococcus carrier is prepared
First, the polypropylene bulked silk that Selection radio surface-area is large is raw material, and the soft microbe stuffing be woven into, as the fixation support of rhodococcus fermented liquid.As an embodiment of the present utility model, the specific surface area of described polypropylene bulked silk can be 600 ~ 800m 2/ m 3.As an embodiment of the present utility model, described soft microbe stuffing can be polypropylene filler bundle.Adopt soft microbe stuffing greatly can improve the efficiency of sewage disposal as microbe carrier.The major function carrier of this filler is the strand adopting polypropylene to make, through the process of strand indentation.
Described soft microbe stuffing is generally circular, and diameter is 5 ~ 8cm, and the center of circle is porose, and fixed strip can pass this hole.The structure of polypropylene filler bundle is circular, is wrapped on ring, fibrous bundle is uniformly distributed by hydroformylation fiber or POLYESTER YARNS pressure, and simulation natural waterweeds form processes.Preferably, the inner ring of polypropylene filler bundle is flakes branch, can biofilm, effectively can cut bubble again, improves transfer rate and the utilization ratio of oxygen, aqueous vapor microbial film is fully exchanged, the organism in water is efficiently processed.Fixed strip connects rhodococcus carrier bunchiness, and every meter of fixed strip is connected in series 6 ~ 8 rhodococcus carriers.
Secondly, described rhodococcus fermented liquid is loaded spray thrower tank, in 100,000 grades of clean workrooms, opens spray thrower rhodococcus fermented liquid is sprayed onto on described soft microbe stuffing, be sprayed onto the adsorptive capacity saturated (dripping and be advisable in lower end) of filler.Send into vacuum drying chamber by closure delivering device, kiln temperature 35 ~ 40 DEG C, dry 8 ~ 10 hours, namely make rhodococcus carrier.
Finally, be serially connected with on fixed strip by rhodococcus carrier, described fixed strip can be selected from rigidity nylon rope or leather strap.Preferably, the head and the tail two ends of described fixed strip are not connected in series rhodococcus carrier, so that be fixed on circular support skeleton by the head and the tail of fixed strip.
(2) bearing of purifying water body is assembled
Select soft stronger agriculture and forestry organic waste material (such as bamboo, rattan or wicker etc.), be cut to fine strip shape, then bend, head and the tail are fixedly connected with and are processed into the circular support skeleton that radius is 50 ~ 80cm, the head and the tail some being serially connected with the fixed strip of rhodococcus carrier are fixedly connected with two circular support skeletons respectively, are namely purified the bearing of water body.
Generally between two circular support skeletons, evenly fix 8 ~ 10 fixed strips.Alternatively, the length of described fixed strip is 1 ~ 2 meter.
The bearing of purifying water body can be preserved in the following way: will leave shady and cool dry place after the bearing vacuum packaging of the purifying water body after assembling in, biological activity can maintain 6 ~ 9 months.
(3) device of purifying water body is assembled
The circular support skeleton of bearing one end of purifying water body arranges some dividing strips, circular support skeleton is made to be divided into multiple grid, again by waterplant (such as watermifoil, Canna generalis Bailey, Herba Eichhorniae, water peanut, calamus etc.) be planted in grid, namely obtain the device of described purifying water body.
In an embodiment of the present utility model, the planting density of described waterplant in grid can be 10 ~ 20 strains/m 2.In a preferred embodiment of the present utility model, described waterplant is selected from watermifoil and/or Canna generalis Bailey.As an embodiment of the present utility model, described grid is of a size of 2 ~ 4cm × 2 ~ 4cm.
As an embodiment of the present utility model, described dividing strip can be selected from rigidity nylon rope.
In a preferred embodiment of the present utility model, described in be distributed with dividing strip circular support skeleton on be also fixed with cursory, to improve the floating stability of described device in water.The obstacle of fixation loaded down with trivial details in water body and water body flood passage can also be reduced, more convenient, practical, be especially practically applicable to waterway system.
Determine the quantity of described purifying water body device according to eutrophication water degree and the depth of water, with nylon rope, described purifying water body device is stably fixed on water surface and prevents it from drifting about.For the benefit of flood discharge, can install described purifying water body device in the limit that flow rate of water flow is stable.
For example, be in the static water body of 0.5 ~ 2.5m in the depth of water, can according to every 50 ~ 100m 21 described purifying water body device is installed.Waterplant generally in plantation in 3 ~ April of spring, regularly cradles once for every 2 ~ 3 months.This device Absorbable organic halogens uses 3 ~ 4 years, without the need to follow-up maintenance after one-step installation.
The swimming in the water surface of refining plant Absorbable organic halogens in static water body, and need with nylon rope, multiple described eutrophic water body device to be fixed up in the river course of flowing, prevent washed away.Such as need to take external stability measure in the water body (streamflow flow velocity≤0.3m/s) that mobility is less: be fixed on below water surface 5cm and keeping parallelism tension by parallel for two nylon ropes (anticorrosion tempering), fix a described purifying water body device along the every 5m in nylon rope direction.Waterplant generally in plantation in 3 ~ April of spring, regularly cradles once for every 2 ~ 3 months.This device Absorbable organic halogens uses 2 ~ 3 years, follow-uply after one-step installation only needs periodic cleaning.
Embodiment 1: static eutrophication pool in-situ immobilization test (Jiangsu)
This experiment place is positioned at Jiangsu Province's Yixing City one Craft in Chemical Industrial Area, and pool area is about 1000m 2, sewage source is living quarters sanitary sewage.
First, utilize sweet potato waste water Large Scale Biology fermentation rhodococcus 500L, make its viable count reach 1.0 × 10 9more than CFU/ml, loads pouring machine tank, in 100,000 grades of clean workrooms, opens spray thrower, is sprayed onto by rhodococcus fermented liquid on the long soft microbe stuffing of about 80cm, is sprayed onto the adsorptive capacity saturated (dripping and be advisable in lower end) of filler.Vacuum drying chamber is sent into, kiln temperature 38 DEG C, successive drying 10 hours, obtained rhodococcus carrier by closure delivering device.
Then, rhodococcus carrier is serially connected with on nylon rope, then the head and the tail being serially connected with the nylon rope of rhodococcus carrier are fixedly connected with two circular support skeletons respectively.Described circular support skeleton is bent to form by bamboo the annulus that radius is 50 ~ 80cm.Then on an annulus, arrange some nylon ropes, make annulus be divided into multiple length × wide grid for 3cm × 3cm by nylon rope, waterplant watermifoil is planted in grid.It is cursory to be evenly arranged on this annulus again, namely obtains the device of described purifying water body.
Finally, every 50m in pool 2the device of a described purifying water body is installed, amounts to 20.This experiment is from November, 2013, and water pollution substrate concentration is COD=63mg/L, TN=8.5mg/L, ammonia nitrogen=6.8mg/L.After 6 months, water pollution substrate concentration reduces to COD=19mg/L, TN=1.5mg/L, ammonia nitrogen=0.2mg/L, reaches earth's surface two class water quality standard.
Embodiment 2: eutrophication water course in situ repairing test (cold water river, Beijing)
This experiment is positioned at cold water He little Hong Men sewage work upstream, long section, about 200 meters, demonstration area, and river width 40 ~ 50m, quality of river water is bad five classes.
First, below water surface 5cm is fixed on and keeping parallelism tension by parallel for the nylon rope of two long 50m; Then, the device of a described purifying water body is fixed along the every 5m in nylon rope direction.The last every 10m of length direction along the river installs the device of a described purifying water body.
This experiment is from July, 2014, and river water body Pollutant levels are COD=80 ~ 100mg/L, TN=9 ~ 15mg/L, ammonia nitrogen=5 ~ 10mg/L.After 3 months, water pollution substrate concentration reduces to COD=40 ~ 50mg/L, TN=5 ~ 10mg/L, ammonia nitrogen=3 ~ 7mg/L, and the device of this purifying water body can cut down pollutent about 40%.
As mentioned above, the device of the purifying water body that the utility model provides gives full play to the respective advantage of microorganism and phytoremediation, structure microflora is core (underwater portion) and the composite plant-microorganism remediation system of auxiliary phytoremediation system (water surface part), utilize the three-dimensional arrangement of water body at full capacity, realize the high-efficient purification to eutrophication water.
Microflora of the present utility model is based on the red ball of efficient denitrification microbial inoculum of agricultural wastes bio-transformation, and provide for it flexible carrier surely grown rapidly, phytoremediation system is with nitrogen, phosphorus height enriching plant watermifoil, Canna generalis Baileys etc. are main, and for it provides can the bearing of following water-level lifting, formation root hole purifies, the multistage denitrogenation dephosphorizing measure of waterplant configuration and Tiny ecosystem purified in situ, to the less eutrophication water COD of current flowing, the clearance Absorbable organic halogens of nitrogen and phosphorus is more than 50%, practical function microorganism and plant pass through physics, to the quick absorption of water pollutant and degraded under chemistry and life assemblage condition.
The device of the purifying water body that the utility model provides have raw materials for production cheap (agriculture and forestry organic waste material), less investment, simple to operate, long service life and installation, convenient later maintenance, without the need to advantages such as energy consumptions.The utility model provides the brand-new route that is administered eutrophication water, has good economic benefit and social benefit, is particularly useful for the eutrophication water that current flowing is less.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any amendment of making, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (5)

1. the device of a purifying water body, it is characterized in that, comprise the fixed strip that two circular support skeletons and some are serially connected with rhodococcus carrier, the head and the tail of described fixed strip are fixedly connected with two circular support skeletons respectively, a described circular support skeleton is furnished with some dividing strips, this circular support skeleton is made to be divided into multiple grid, for planting aquatic plants in described grid; It is cursory that the described circular support skeleton being distributed with dividing strip is also fixed with.
2. the device of purifying water body according to claim 1, is characterized in that, described fixed strip is selected from rigidity nylon rope or leather strap.
3. the device of purifying water body according to claim 1, it is characterized in that, 8 ~ 10 fixed strips are evenly fixed between described two circular support skeletons, the length of described fixed strip is 1 ~ 2 meter, every meter of fixed strip is connected in series 6 ~ 8 rhodococcus carriers, the radius of described circular support skeleton is 50 ~ 80cm, and described grid is of a size of 2 ~ 4cm × 2 ~ 4cm.
4. the device of purifying water body according to claim 1, it is characterized in that, described waterplant is selected from least one in watermifoil, Canna generalis Bailey, Herba Eichhorniae, water peanut and calamus, and described circular support skeleton is made by least one in bamboo, rattan and wicker is bending.
5. the device of purifying water body according to claim 1, is characterized in that, the planting density of described waterplant in grid is 10 ~ 20 strains/m 2.
CN201520109712.7U 2015-02-15 2015-02-15 The device of purifying water body Active CN204529471U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520109712.7U CN204529471U (en) 2015-02-15 2015-02-15 The device of purifying water body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520109712.7U CN204529471U (en) 2015-02-15 2015-02-15 The device of purifying water body

Publications (1)

Publication Number Publication Date
CN204529471U true CN204529471U (en) 2015-08-05

Family

ID=53743486

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520109712.7U Active CN204529471U (en) 2015-02-15 2015-02-15 The device of purifying water body

Country Status (1)

Country Link
CN (1) CN204529471U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104671416A (en) * 2015-02-15 2015-06-03 中国科学院生态环境研究中心 Device for restoring eutrophic water

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104671416A (en) * 2015-02-15 2015-06-03 中国科学院生态环境研究中心 Device for restoring eutrophic water
CN104671416B (en) * 2015-02-15 2016-12-07 中国科学院生态环境研究中心 Repair the device of eutrophication water

Similar Documents

Publication Publication Date Title
CN108059242B (en) A kind of extreme dehydration rural activity area Treated sewage reusing pollutant preventing control method and device
CN100378272C (en) Stereo in-situ ecological urban water system repairing process
CN201406359Y (en) Treatment device for black odor river
CN101973637B (en) River channel purification system for processing rural domestic sewage
CN105110476B (en) A kind of three-dimensional for the smelly river water quality strengthened purification of urban black is biological floating bed
CN104692536A (en) Aquatic plant fixing device for repairing water and bottom mud
CN103332790A (en) Light enhancing oxygen-enriched organism structural system for synchronously repairing eutrophicated water bodies in rivers and lakes and sediments in situ
CN107324499A (en) A kind of multifunctional ecological chinampa purified for landscape water body
CN103979685B (en) The biological floating bed construction process of a kind of strengthening
CN108946951B (en) A kind of composite ecological floating island device of high-efficient purification polluted-water
CN101691257A (en) Submerged ecological bed for purifying eutrophic waterbody and application thereof
CN106006965A (en) Black and odorous water body treatment and restoration system
CN104556391A (en) Artificial wetland purification method for wastewater
CN208413988U (en) The strand ecological water chain promoted for black and odorous water improvement and water quality
CN105461071A (en) Green ecological floating island device
CN202643414U (en) Waterweed simulated type water purification device
CN109987710A (en) The strand ecological water chain promoted for black and odorous water improvement and water quality
CN203256023U (en) Tail water deep processing aeration-type ecological floating island with bamboo filament filler substrate
CN104671416B (en) Repair the device of eutrophication water
CN112794560A (en) In-situ ecological purification module and system for polluted water treatment
CN202175603U (en) Integrated non-point source sewage treatment system
CN111573848A (en) Adopt graphite alkene photocatalysis net aquatic attitude comprehensive treatment system
CN204529471U (en) The device of purifying water body
CN111003811A (en) Black and odorous river channel treatment method based on river channel artificial ecosystem theory
CN102086080B (en) Water treatment method and device based on photoautotroph film

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant