CN102583734B - Ecological combined pond - Google Patents
Ecological combined pond Download PDFInfo
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- CN102583734B CN102583734B CN2012100123290A CN201210012329A CN102583734B CN 102583734 B CN102583734 B CN 102583734B CN 2012100123290 A CN2012100123290 A CN 2012100123290A CN 201210012329 A CN201210012329 A CN 201210012329A CN 102583734 B CN102583734 B CN 102583734B
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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 invention relates to an ecological combined pond, which comprises a pond body, baffling partition walls, treatment partition walls, a biochemical treatment unit, a water inlet pipeline system and an aeration pipeline system, wherein the baffling partition walls divide the pond body into a plurality of baffling areas according to the scale of the pond body; the treatment partition walls divide the baffling area into a plurality of treatment areas according to the volume of the baffling area; the biochemical treatment unit, the water inlet pipeline system and the aeration pipeline system are floated in the water body in the treatment area; the biochemical treatment unit comprises a main body frame, an aeration device fixed on the middle lower part of the main body frame, filler layers respectively arranged on the upper part and the lower part of the aeration device, a surrounding curtain covered around the periphery of the main body frame, and a buoyance plate arranged above the main body frame; and the aeration device is communicated with a fan by the aeration pipeline system. The ecological combined pond has the advantages that the ammonia nitrogen removal efficiency is extremely high, the waterpower retention time is long, the denitrification efficiency is high because of combining the rotational flow design of combination units in the pond, the sludge is highly stabilized and mineralized, the sludge generation amount is about 30% of the traditional sludge generation amount, the clearing period can reach 20 years and the operation cost is low.
Description
Technical field
The present invention relates to a kind of ecologic assemblage pool.
Technical background
Aggravation along with China's water pollution, water environment pollution is administered becomes one of environmental protection main project, and biochemical water treatment technology is the important means of waste water treatment, removes COD and nitrogen phosphorus in the waste water simultaneously by biochemical process at present, need a plurality of biochemical unit combined, as A/O, A
2O methods etc. all are that the series connection by anaerobism, anoxic, Aerobic Pond realizes, have so not only increased the complexity of technical process, and floor space is big, need equipment various, running cost height, treatment effect even do not reach " urban wastewater treatment firm pollutant emission standard " one-level B standard.In process treatment process, produce a large amount of excess sludges simultaneously, as deal with improperly and can cause secondary pollution to surrounding environment.Sludge dewatering at present and stable treatment technique expense are higher, and peculiar smell is big, has increased the running cost of sewage work greatly and has influenced the Sewage Plant Air quality.Therefore, it is easy to develop a kind of operation, and running cost is low, and treatment effect is good, and the technology that the mud generation is few or equipment are very necessary.
Summary of the invention
Technical problem to be solved by this invention provides a kind of inside to be had floating biochemical treatment unit, is divided into a plurality of oxygen concentration gradients, the mud generation is few, effluent quality well can reach one-level A standard the ecologic assemblage pool at depth direction.
The technical solution used in the present invention:
A kind of ecologic assemblage pool, it comprises pool body, according to the scale of the described pool body baffling that it is divided into some bafflings district is cut off, according to the volume in described baffling district the treatment zone that it is divided into some treatment zones cut off, swims in the biochemical treatment unit in the water body, suction culvert system and aerating pipelines system in the described treatment zone; Described biochemical treatment unit comprises main body frame, be fixed on the aerating apparatus of described main body frame middle and lower part, be separately positioned on described aerating apparatus upper and lower packing layer, be wrapped in the weather screen around the described main body frame and the buoyancy plate that is arranged on described main body frame top, described aerating apparatus is connected with blower fan by described aerating pipelines system.
Described baffling cuts off and treatment zone cuts off the fabric that scribbles waterproof layer for the surface, the bottom is fixed at the bottom of the pool, the height that baffling cuts off is higher than the water surface, alternately sets out the water hole at two ends and forms baffling, and the height that treatment zone cuts off be described biochemical treatment unit bottom extremely at the bottom of the pool.
At the bottom of described pool body comprises the pool, slope, the pool and become the slope section, pool body adopts the HDPE film to carry out antiseepage and handles, section bottom, described changes slope is provided with barricade, becomes the slope section and goes up and plant vegetation slope pavement.
Described suction culvert system is arranged on described HDPE film lower floor, comprise distribution reservoir, water distributing pipe and the water distribution point that is communicated with by described water distributing pipe and described distribution reservoir respectively, water intake mode is the gradient water inlet, along with the increase increase water distribution quantity of water distribution point from the water outlet distance.
Described biochemical treatment unit is rectangular parallelepiped or square, and its volume is 25 ~ 100m
3, the distance between the adjacent biochemical treatment unit is 1.5 ~ 3 meters, its filler is fibrous packing.
The lawn pad that described buoyancy plate surface is provided with to plant plant.
Described aerating pipelines system comprises the person in charge and the arm that is connected with on the bank blower fan, the described person in charge is arranged between the packing layer and buoyancy plate of described biochemical treatment unit, described arm is from being responsible for downward setting, be fixed on the middle and lower part of the main body frame of described biochemical treatment unit, described aerating apparatus is the spiral-flow aeration device, is arranged on the arm.
Principle of the present invention: it is about 450mg/L that water inlet COD is handled on the ecologic assemblage of the present invention pool, waste water is at first removed wherein big floating matter by grid, enter pool body by the distribution reservoir water distribution from water distributing pipe then, waste water distributes by the water distribution point of bottom, the combination pool, enter into the combination pool, pool body burden equilibrium.Under natural water purification and artificial aeration's effect, remove COD and nitrogen in the waste water, there are enough residence time on the ecologic assemblage pool, and mud has carried out abundant digestion, and mud contains organic mud hardly at the bottom of the pool, and the mud generation is low.As shown in Figure 1, the ecologic assemblage of the present invention pool up is respectively from pond bottom: anaerobic zone, aerobic area, aerobic zone, aerobic area and natural reaeration region are equivalent to A
2O technology lontitudinal series AO technology is again carried out water treatment, and is very high to waste water COD and nitrogen removal efficiency.Organism (BOD in the waste water
5Expression) removal process is: be decomposed into small organic molecule at the anaerobic zone organism by anaerobion, through oxygen and the aerobic zone of holding concurrently, organic substance finally generates carbonic acid gas and water under the effect of hold concurrently oxygen and aerobic microbiological, because have aerobic area and natural reaeration region that waste water is further strengthened handling in the ecologic assemblage pool more than the aerobic zone, the water outlet of the ecologic assemblage pool can reach " urban wastewater treatment firm pollutant emission standard " one-level A standard.Ammonia nitrogen divides two portions in the waste water, part ammonia nitrogen is to carry in the former water inlet, another part carries out ammonification by microorganism in the ecologic assemblage pool and produces, the removal of ammonia nitrogen is to finish by anoxic and aerobic zone, at first ammonia nitrogen generates nitrate and nitrite in aerobic zone generation nitration reaction, form at aerating apparatus under the effect of air-flow, form circulating water flow around the biochemical treatment unit, realized the backflow from the aerobic zone to the aerobic area of nitrate and nitrite, thereby make nitrate and nitrite at aerobic area generation denitrification, nitric nitrogen finally becomes nitrogen.Because the present invention adopts a kind of aerator that produces strong eddy flow, make to contain the circulation of nitrate and nitrite waste water fully, reflux ratio is far longer than conventional hybrid liquid and refluxes, so nitrogen removal efficiency is high in the waste water, ammonia nitrogen removal frank can reach more than 99.5%, nitrogen removal rate about 75%.
In addition, in the biochemical treatment unit on the ecologic assemblage pool filler is housed, therefore make up the pool except having activated sludge process to the effects such as the absorption of pollutent, degraded, also has microbial film to the treating processes of pollutent in the waste water, biomembrance process impact load resistance ability is strong, for the metazoan that swims provides the habitat, increased the degree of enriching of combination pool ecological chain, promoted the steady progression of ecosystem.
There is following advantage on the ecologic assemblage of the present invention pool:
1. hydraulic detention time is long, and sludge digestion is abundant, highly stableization, inorganicization, and the mud generation is few.
2. be provided with filler in the body of the pool simultaneously, have activated sludge process and embrane method and handle two kinds of functions, need not reflux by mud, shock resistance meets the characteristics that ability is strong, treatment effect is good.
3. removal peculiar smell, the deep aeration water depth is bigger, by upper strata water seal effect, has reduced the peculiar smell that anaerobic sludge produces at the bottom of the pool.
4. can utilize discarded pond and bottom land as the ecologic assemblage pool, reduce construction cost and construction period, combination pool major equipment is biochemical processing unit, produces simply, does not have other heavy mechanical equipment, and the facility investment expense is low.
6. the gradient water distribution is adopted on the ecologic assemblage pool, adopt different water distribution quantities according to water distribution point from the water outlet distance, from the position flooding quantity maximum of water outlet away from, make pollutent identical at the hydraulic detention time for the treatment of zone, each water distributing pipe is realized the pollutent properly distributed in its water distribution zone.
7. realize biochemical unit come-up by the buoyancy of buoyancy plate, do not have the fixation problem of traditional biochemical unit filler, it is convenient to install and overhaul.
8. the lawn pad of buoyancy plate upper surface setting can be planted green plants, form biological floating island, not only further strengthened the removal of waste water nitrogen, and effectively prevented waterproof fabric aging of buoyancy plate outsourcing, beautify the ecologic assemblage pool and surrounding environment thereof simultaneously, formed view one.
9. do not need mud, mixed-liquor return operation, do not need sludge treatment, operation is simple, and sewage work's staffing is few, requires lower to the operator.
10. do not need sludge treatment, running cost is low.
11. vertically change in conjunction with oxygen concentration, realized A
2Many technological processs of O and AO are connected, vertically A
2O connects with AO, and it is obvious that nitric efficiency height, end add the medicament phosphor-removing effect.
Description of drawings
Fig. 1 is the ecological schematic diagram of ecologic assemblage unit in the ecologic assemblage of the present invention pool;
Fig. 2 cuts off for baffling of the present invention and treatment zone cuts off the synoptic diagram that arranges;
Fig. 3 is biochemical treatment of the present invention unit and aerating pipelines scheme of installation;
Fig. 4 is the filler unit structural representation;
Fig. 5 is the suction culvert synoptic diagram;
Fig. 6 is pool body structure synoptic diagram.
In the accompanying drawings: at the bottom of 1 pool body, the 1-1 pool, slope, the 1-2 pool, 1-3 become stuffing frame under slope section, 1-4 barricade, 1-5 HDPE film, 2 treatment zones partition, 3 biochemical treatment unit, 3-1 main body frame, 3-2 packing layer, the last stuffing frame of 3-21, the 3-22,3-23 filler bundle, 3-24 balancing weight, 3-3 aerating apparatus, 3-4 buoyancy plate, 3-6 weather screen, 3-7 lawn pad, 4 bafflings partition, 5-1 water distribution point, 5-2 distribution reservoir, 5-3 water distributing pipe, the 6-1 person in charge, 6-2 arm.
In Fig. 1: A represents natural reaeration region, and B represents aerobic area, and C represents aerobic zone, and D represents anaerobic zone.
Embodiment
As shown in Figure 2, the present invention includes pool body 1, its baffling that is divided into some bafflings district cuts off 4, cuts off 2, swims in the biochemical treatment unit 3 in the water body, suction culvert system and aerating pipelines system in the described treatment zone according to its treatment zone that is divided into some treatment zones of big young pathbreaker in baffling district according to the big young pathbreaker of described pool body 1.
Pool body 1 utilizes natural low lying areas or the discarded pool to build; comprise 1-1 at the bottom of the pool, pool slope 1-2 and become slope section 1-3; the dark 6-9 rice in the pool; 1-1 and pool slope 1-2 all adopts the HDPE film to carry out the antiseepage processing at the bottom of its pool; 1-1 soil is evened grinding compacting out at the bottom of the pool; place mat fine sand levelling blanket, HDPE film impervious barrier and protective layer successively from the bottom up, protective layer is the thick compacting earthing of 500mm.Pool slope 1-2 at first evens out, place mat fine sand levelling blanket and HDPE film impervious barrier successively then, and earthing no longer on it, sloping body anti seepage membrane is laid with pool body anti seepage membrane, is welded as a whole between the two.The gradient on slope, the pool is 1:2.5, and 1-2 top in pool slope is provided with and becomes slope section 1-3, and section bottom, described change slope is provided with barricade 1-4, as shown in Figure 6, can stop along slope, the pool and under foreign material enter pool body.The gradient that becomes the slope section is 1:1, after antiseepage is handled, covers planting soil at HDPE film impervious barrier, and to spread particle diameter then be the pebbles of 30-40mm and plant plant, prevents sunshine etc. to the infringement of HDPE film, and beautifying the environment simultaneously prevents erosion.
The ecologic assemblage pool is divided into several big baffling districts, and the baffling district adopts baffling to cut off 4 with its disconnection, cuts off the water hole realization baffling that 4 two ends are arranged alternately by baffling, and water (flow) direction effectively prevents the short flow phenomenon on the ecologic assemblage pool shown in arrow among Fig. 2.Baffling cuts off 4 by the firm and hard existing come-up of the buoyancy of edge binding thereon.
Be divided into several treatment zones in each baffling district uniformly according to water distribution point quantity, each treatment zone comprises many group biochemical treatments unit, be provided with treatment zone between the treatment zone and cut off 2, it highly is to the bottom of biochemical treatment unit at the bottom of the pool, treatment zone is not exclusively disconnected, current can both guarantee the circulation for the treatment of zone top current by the intercommunication of biochemical treatment cell mesh, had effectively prevented influencing each other between each treatment zone again.In the treatment zone of pool body water (flow) direction end, chemical feed pipe is set, dephosphorization is carried out in the water outlet of the ecologic assemblage pool handled.
As shown in Figure 3, described biochemical treatment unit 3 comprises main body frame 3-1, be fixed on aerating apparatus 3-3 that the 1/5-1/4 of described main body frame 3-1 highly locates, evenly be arranged on respectively described aerating apparatus 3-3 upper and lower packing layer 3-2, be wrapped in the weather screen 3-6 around the described main body frame 3-1 and the buoyancy plate 3-4 that is arranged on described main body frame 3-1 top, described aerating apparatus 3-3 is connected with the blower fan that is arranged on the bank by aerating pipelines.
As shown in Figure 4, the fixed form of described packing layer 3-2 in described main body frame 3-1 is: filler bundle 3-23 upper and lower ends is separately fixed on stuffing frame 3-21 and the following stuffing frame 3-22, last stuffing frame is fixed on balancing weight 3-24 is set on the stuffing frame 3-22 under the main body frame 3-1, with the filler bundle drawing, prevent the floating movement of filler Shu Suishui.
Described biochemical treatment unit 3 is rectangular parallelepiped or square, and its volume is 25 ~ 100m
3, the distance between the adjacent biochemical treatment unit is 1.5 ~ 3 meters, its filler is fibrous packing.The biochemical treatment unit is unit and the core of ecologic assemblage pool minimum, and each assembled unit has its mixed-liquor return circulation alone, by means of the removal of this kind special construction and design concept realization COD and nitrogen.Main body frame is used for the fixing of filler unit, aeration tube and aerator etc. in the biochemical treatment unit, filler in the biochemical treatment unit is conducive to form microbial film and strengthens the Wastewater Treated by Activated Sludge Process effect, the filler bottom is equipped with balancing weight, and the stretching filler also prevents that filler is floating with water; Buoyancy plate on the biochemical treatment unit makes the biochemical treatment unit floating.The main body frame periphery is wrapped up with weather screen, and weather screen is selected erosion resistance and good waterproof performance, is difficult for the thick heavy weave that aging skin scribbles waterproof layer, as canvas, forms in the unit water circulation up and down by aerator eddy flow effect and weather screen, realizes mixed-liquor return.
As Fig. 3 and shown in Figure 6, described aerating pipelines system comprises person in charge 6-1 and the arm 6-2 that is communicated with the blower fan that is arranged on the bank, described person in charge 6-1 is fixedly installed between the main body frame 3-1 and buoyancy plate 3-4 of described biochemical treatment unit 3, biochemical treatment unit 3 is together in series, the person in charge who is connected with blower fan is steel pipe, through becoming the slope section, be the AB section from the person in charge 6-1(that becomes slope section bottom to the biochemical treatment unit 3 at edge) be rubber hose, can effectively cushion the impulse force of current, avoid equipment impaired; Described arm 6-2 arranges downwards from being responsible for 6-1, is fixed on the middle and lower part of the main body frame 3-1 of described biochemical treatment unit 3, i.e. 1/5-1/4 place of its height, and described aerating apparatus 3-3 is the spiral-flow aeration device, is arranged on the arm 6-2, with it connection.Binding buoyancy plate makes whole aerating pipelines come-up on the AB section of described person in charge 6-1, and with the nylon rope that is fixed at the bottom of the pool AB section is drawn in below the water surface, makes on the water surface that makes up the pool more neat and artistic.
Described suction culvert system is arranged on the HDPE film lower floor of pool body 1, comprise distribution reservoir 5-2 and the water distribution point 5-1 that is communicated with by pipeline and described distribution reservoir 5-2 respectively, as shown in Figure 5, water intake mode is the gradient water inlet, along with the increase increase water distribution quantity of water distribution point from the water outlet distance.Since short from the regional hydraulic detention time that pool body water outlet is nearer, by carrying out the gradient water distribution on the water dispensing valve, guarantee ecologic assemblage pool hydraulic detention time unanimity.
Described buoyancy plate 3-4 outside surface is provided with lawn pad 3-7, the buoyancy plate makes the biochemical treatment unit be levitated state in the ecologic assemblage pool by buoyancy of water, materials such as buoyancy plate employing canvas are packed, its upper surface binding lawn pad, can be at the water surface biological floating island of growing, the green plants on chinampa has not only further been strengthened the removal of waste water nitrogen, and has effectively prevented outsourcing material aging on the buoyancy plate, has beautified ecologic assemblage pool environment simultaneously.
The deep aeration ecologic assemblage pool involved in the present invention, utilize natural low lying areas or the discarded pool to build the ecologic assemblage pool, the dark 6-9 rice in the combination pool, the ecologic assemblage pool is made up of several biochemical treatment unit, the biochemical treatment unit carries out wastewater treatment along forming anaerobism, anoxic, aerobic zone etc. on the water depth direction by multiple effects such as sludge absorption, biological degradations, and bottom mud fully digests at anaerobic environment, the mud generation is few, and cleaning cycle can reach 20 years.
Handle example
The ecologic assemblage pool of certain sewage work, 70,000 tons/day for the treatment of scales, volume is 500,000 sides, is divided into five baffling districts, because pool shape is irregular, each baffling is distinguished into 4-6 treatment zone.System normally moves, and effluent quality reaches " urban wastewater treatment firm pollutant emission standard " one-level A standard, and concrete data are as shown in table 1:
Table 1 Inlet and outlet water water quality table (unit: mg/L)
| Project | COD | BOD | SS | TN | NH 4-N | TP |
| Water inlet | 400-420 | 190-215 | 180-200 | 48-52 | 28-32 | 4.0-4.5 |
| Water outlet | 44-46 | 15-18 | 12-15 | 12-13 | 0.05-0.2 | 0.1-0.15 |
| One-level A | 50 | 10 | 10 | 15 | 5（8） | 0.5 |
| Clearance (%) | 88.5-89.5 | 94.7-93.0 | 91.7-94 | 73-77 | 99.2-99.8 | 96.2-97.7 |
Tradition A/O activated sludge process is about about 75% ammonia nitrogen removal efficient, and this ecologic assemblage pool clearance is up to 99%, and it is high to remove efficient.In addition, this ecologic assemblage pool hydraulic detention time is long, in conjunction with the eddy flow design of assembled unit in the pool, the nitric efficiency height, inorganicization of mud height stabilization, the mud generation only is traditional about 30%, cleaning cycle can reach 20 years, and running cost is about 0.30 yuan of/ton water.
Claims (4)
1. ecologic assemblage pool is characterized in that it comprises pool body (1), according to the scale of described pool body (1) its baffling that is divided into some bafflings district is cut off (4), according to the volume in described baffling district the treatment zone that it is divided into some treatment zones cut off (2), swims in biochemical treatment unit (3), suction culvert system and aerating pipelines system in the water body in the described treatment zone; Described biochemical treatment unit (3) comprises main body frame (3-1), be fixed on the aerating apparatus (3-3) of described main body frame (3-1) middle and lower part, be separately positioned on described aerating apparatus (3-3) upper and lower packing layer (3-2), be wrapped in described main body frame (3-1) weather screen (3-6) all around and the buoyancy plate (3-4) that is arranged on described main body frame (3-1) top, described aerating apparatus (3-3) is connected with blower fan by described aerating pipelines system;
Described baffling cuts off (4) and treatment zone cuts off (2) scribble waterproof layer for the surface fabric, the bottom is fixed at the bottom of the pool, the height that baffling cuts off (4) is higher than the water surface, alternately set out the water hole at two ends and form baffling, the height that treatment zone cuts off (2) be from the bottom of the pool bottom the described biochemical treatment unit (3);
Described buoyancy plate (3-4) surface is provided with to plant the lawn pad (3-7) of plant.
2. the ecologic assemblage according to claim 1 pool, it is characterized in that described pool body (1) comprises (1-1) at the bottom of the pool, slope, the pool (1-2) and becomes slope section (1-3), pool body adopts HDPE film (1-5) to carry out antiseepage and handles, described change slope section (1-3) bottom is provided with barricade (1-4), becomes slope section (1-3) and goes up the plantation vegetation slope pavement.
3. the ecologic assemblage according to claim 2 pool, it is characterized in that described suction culvert system is arranged on described HDPE film (1-5) lower floor, comprise distribution reservoir (5-2), water distributing pipe (5-3) and the water distribution point (5-1) that is communicated with by described water distributing pipe (5-3) and described distribution reservoir (5-2) respectively, water intake mode is the gradient water inlet, along with the increase increase water distribution quantity of water distribution point from the water outlet distance.
4. the ecologic assemblage according to claim 1 pool is characterized in that described biochemical treatment unit (3) is rectangular parallelepiped or square, and its volume is 25 ~ 100m
3, the distance between the adjacent biochemical treatment unit is 1.5 ~ 3 meters, its filler is fibrous packing.
5. the ecologic assemblage according to claim 1 pool, it is characterized in that described aerating pipelines system comprises the person in charge (6-1) and the arm (6-2) that is connected with on the bank blower fan, the described person in charge (6-1) is arranged between the packing layer (3-2) and buoyancy plate (3-4) of described biochemical treatment unit (3), described arm (6-2) arranges downwards from being responsible for (6-1), be fixed on the middle and lower part of the main body frame (3-1) of described biochemical treatment unit (3), described aerating apparatus (3-3) is the spiral-flow aeration device, is arranged on the arm (6-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100123290A CN102583734B (en) | 2012-01-16 | 2012-01-16 | Ecological combined pond |
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| CN2012100123290A CN102583734B (en) | 2012-01-16 | 2012-01-16 | Ecological combined pond |
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| CN102583734A CN102583734A (en) | 2012-07-18 |
| CN102583734B true CN102583734B (en) | 2013-08-14 |
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| CN111717995A (en) * | 2019-03-19 | 2020-09-29 | 北京林业大学 | Autotrophic denitrification artificial pond, construction method and method for denitrifying sewage by using artificial pond |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04354600A (en) * | 1991-06-03 | 1992-12-08 | Taisei Corp | Treatment of water in pond wherein waste water containing agricultural chemical and nitrogen and equipment |
| GB2411396B (en) * | 2004-02-24 | 2006-12-27 | Quintin Anthony Murfin | Aeration pond and reedbed |
| CN200978240Y (en) * | 2006-10-17 | 2007-11-21 | 山东大学 | Artificial floating grid oxidation pond |
| CN201952325U (en) * | 2010-12-15 | 2011-08-31 | 东南大学 | Stepwise function-reinforced biological ecological oxidation pond |
| CN102134124B (en) * | 2011-04-24 | 2013-05-01 | 江苏一环集团有限公司 | Integrated oxidation ditch |
| CN202576089U (en) * | 2012-01-16 | 2012-12-05 | 北京中环嘉诚环境工程有限公司 | Ecological combination pond |
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Application publication date: 20120718 Assignee: JIACHENG ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. Assignor: Beijing Zhonghuan Jiacheng Environmental Engineering Co., Ltd. Contract record no.: 2017130000013 Denomination of invention: Ecological combined pond Granted publication date: 20130814 License type: Common License Record date: 20170727 |
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