CN101987761A - Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage - Google Patents
Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage Download PDFInfo
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- CN101987761A CN101987761A CN2009101832019A CN200910183201A CN101987761A CN 101987761 A CN101987761 A CN 101987761A CN 2009101832019 A CN2009101832019 A CN 2009101832019A CN 200910183201 A CN200910183201 A CN 200910183201A CN 101987761 A CN101987761 A CN 101987761A
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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 discloses an underflow landscape green land system with a concentric structure (concentric circle, concentric ellipse, concentric square, concentric polygon, and the like) for deeply disposing small-scale distributed domestic sewage. The system consists of four to six concentric partition walls, an inner waterproof mortar or a waterproof concrete; the height of the wall is declined from inside to outside along with the hydraulic gradient; rough large lime stone or dolomite particles, thin lime stone or dolomite particles and sand-containing soil are sequentially filled between the partition walls from bottom to top; a water distribution pipe is embedded in the partition wall; the system operation adopts the circulation manner of upstream-downstream-upstream to distribute water; a water inlet pipe and the water distribution pipe are embedded in a filling layer; green plant is grown on the soil; an outer circle is provided with an ecological catchment channel in which natural biological fillers such as cobblestones and dimension stones are arranged; emergent aquatic plants can be planted; yielding water in the outer circle landscape green land is in water-dropping aeration when entering the ecological catchment channel; and the quality of the yielding water can be improved through further biological contact and oxidation. The subsequent blockage of the landscape green land is prevented just by regularly cleaning the first-level filler filter bed with the least area. By using the system to process small-scale domestic sewage, the invention has the advantages of even water distribution, good treatment effect, low operation cost, stable operation, attractiveness, low maintenance load, no secondary pollution, and the like. The invention is suitable for promotion and application in disposing distributed domestic sewage in countryside, small towns and residential communities.
Description
Technical field
The present invention relates to technical field of sewage, particularly, be meant a kind of concentric structure (concentric(al) circles, concentration ellipsis, concentric square, concentric Polygons etc.) the undercurrent landscape green space treatment process that is applied in rural area or the samll cities and towns' small-scale dispersant type domestic wastewater advanced treatment.
Background technology
Since the 1980s, constructed wetland waste water treatment technology with its low investment, low during-operation service expense, less energy-consumption, advantage such as attractive in appearance begins to be widely used in sewage disposal and surface water body pollutes the control field.At present typical artificial swamp mainly is made of soil, rubble and plant, is used for the advanced treatment of sewage more.Though using artificial wet land is disposed of sewage and demonstrated huge superiority, its purification efficiency to sewage still is subjected to factor affecting such as weather, soil, sewage characteristic, floristics and wetland form, and it is best that effect reaches far away.Present domestic efforts at environmental protection person mainly concentrates in the improvement of cloth water structure the improvement of artificial swamp, has developed a series of waveform streamings, vertical streaming artificial swamp, has certain effect.The Chen Zhanghe of South China Normal University has invented the multistage artificial swamp of the stepped concentric(al) circles of a kind of eclipsed from top to bottom (publication number CN1390787A), this invention is used for sewage disposal and has advantages such as floor space is little, but its complex structure, the large-scale application difficulty of construction is big.
The small-scale dispersant type domestic wastewater that rural area and samll cities and towns produce has that water quality, water yield fluctuation are big, in the sewage animal-plant oil content higher, contain characteristics such as tensio-active agent such as washing composition, artificial swamp is its main advanced treatment mode, but defective such as ubiquity poor processing effect in winter, the living mosquitos and flies of easy evil in summer, processing efficiency be low.Underflow type artificial wet land involved in the present invention is also referred to as landscape green space, it makes full use of the purification function such as absorption, interception, absorption, degraded of rubble filtering layer, pedosphere and the root system of plant of scientific allocation, realization is to the fine processing of pollutent in the sewage, effectively reduce TN, TP in the sewage simultaneously, guarantee that sewage obtains effectively efficient the processing, and do not produce secondary pollutions such as sewage outflow is smelly.For keeping the ecosystem in energy steady running in the winter of cold, the vegetation of selecting for use among the present invention is the local advantage shrub class plant of perennial evergreen.In addition, the present invention has creatively proposed a kind of concentric structure (concentric(al) circles, concentration ellipsis, concentric square, Polygons etc.) with one heart water distribution manner, and it is even to have a water distribution, the processing efficiency height, does not have advantage such as obstruction.Several engineering practice shows, the present invention is used for the rural area or samll cities and towns' dispersant type domestic wastewater is handled, have treatment effect good, stable, need not advantages such as manual maintenance, working cost are low, have bigger application and dissemination.
Summary of the invention
1, goal of the invention
The objective of the invention is to solve current in rural area or samll cities and towns problems such as not good, the complex structure of artificial wet land system treatment effect in the dispersant type domestic wastewater advanced treatment process, secondary pollution be serious on a small scale, provide a kind ofly suit measures to local conditions, working cost is cheap, water distribution is even, treatment effect is good, stable a kind of concentric structure (concentric(al) circles, concentration ellipsis, concentric square, Polygons etc.) with one heart undercurrent landscape green space treatment system.When improving view, increasing green coverage, solve the difficult problem of dispersant type domestic wastewater advanced treatment on a small scale.
2, technical scheme
Purpose of the present invention realizes by following scheme: a kind of a kind of concentric structure of dispersant type domestic wastewater advanced treatment (concentric(al) circles, concentration ellipsis, concentric square, concentric Polygons etc.) undercurrent landscape green space homologous ray on a small scale that is used for comprises the brick concentric partition wall of 4～6 circles, water inlet pipe, braiding channel, thief hole, blotter, soil and vegetation.Wherein, the neighboring concentric partition wall is 1～2m at interval, and the body of wall height is 0.7～2.5m, reduces successively with hydraulic slope to the outer ring height from inner ring; Fill the coarse Wingdale or the rhombspar of certain altitude with one heart between the partition wall from down to up successively
Tiny Wingdale or rhombspar
With band sandy soil earth; Water inlet pipe is embedded in the inner ring blotter from bottom to top, sustained height was evenly arranged water pipe in the partition wall body of wall with one heart, water distributor is wave layout up and down in company with septum cordis wall body of wall extension, and waste water enters in the landscape green space system, will realize that " up-descending-up " circulates successively; Pretreatment unit is connected the landscape green space inlet channel, and the landscape green space water outlet is collected the back discharging through ecological braiding channel; Described pretreatment unit comprises traditional septic tank, settling tank, anaerobic fixed film reactor, aerobic treatment or anaerobic-aerobic composite processing system etc.
3, beneficial effect
Compare with prior art, the present invention has following beneficial effect:
1) adopt forms such as concentric(al) circles, concentration ellipsis from inside to outside and " up-descending-up " Recycle design water distribution, water distribution is even, and treatment effect is good; 2) adopt the landscape green space of undercurrent type to handle, sewage is only in internal flow, and guarantees that sewage can not overflow, the generation of secondary pollution problems such as no stink by careful calculating; 3) landscape green space first step filler filter bed mainly passes through filter and remove suspended substances, can prevent that landscape green space from stopping up, guarantee that but a large amount of microorganism of follow-up bed of packings filtering layer and pedosphere load carries out advanced treatment to pollutants in sewage, soil covers through vegetation, need not manual maintenance after the steady running; 4) owing to take unique concentric structure, first step filler filter bed area is less, when landscape green space long-time running blockage phenomenon, need only clear up landscape green space first step filler filter bed, and the maintenance management workload is less.5) processing such as the absorption by rubble, soil and plant in the system, interception, absorption, degraded to good removal effect of organic matter, and have certain denitrogenation dephosphorizing effect; 6) the local advantage shrub class plant of selecting perennial evergreen guarantees that as vegetation the ecosystem is unaffected at the winter operation of cold.7) outer ring is provided with ecological braiding channel, and natural biology fillers such as pebbles, piece stone are set in the canal, can plant emergent, and drop oxygenation when outer ring landscape green space water outlet enters ecological braiding channel further improves directly discharging behind the effluent quality by bio-contact oxidation.
Description of drawings
Fig. 1 is a landscape green space system vertical view
Fig. 2 is a landscape green space system sectional view
Wherein, 1: masonry walls; 2: ecological braiding channel; 3: thief hole; 4: at the bottom of the water-proof concrete; 5: waterproof mortar; 6: landscape plant; A: band sandy soil earth; B: tiny Wingdale or rhombspar
C: coarse Wingdale or rhombspar
D: cross water pipe; E: water inlet water distributor.
Embodiment
Below further specify the present invention by specific embodiment:
Landscape green space treatment system as shown in Figure 1.Wherein system dimension is: the oval a=16.0m in outer ring, b=12.0m, the oval a=3.0m of inner ring, b=1.0m; Outer ring oval height 1.0m, the oval height of inner ring 2.0m buries the dark 1.0m in ground; Band sandy soil earth, tiny Wingdale or rhombspar and coarse Wingdale or rhombspar thickness proportion are 1.5: 1: 0.8; System intakes continuously, and vegetation mainly contains the tuber of dwarf lilyturf, Canna generalis Bailey, Nandina domestica etc., evenly plantation at interval.
Engineering practice is the result show, a kind of concentric-ring pattern landscape green space system the key technical indexes of treatment of domestic sewage advanced on a small scale that is used for:
Handle the water yield: 60m
3/ d;
Floor space: 160m
2
Building cost: 800 yuan/m
3Waste water;
Working cost: need not working cost substantially.
Processing target water quality is certain rural area dispersant type domestic wastewater, pre-treatment is aerobic+microkinetic anaerobism combination process, after waste water gravity flow or process promote, enter system of the present invention,, organism is held back from flowing to the bottom through the water distribution pipe drippage, crossed water pipe through upstream and downstream alternative sewage by the gravel or the soil of filling, realization " up-descending-up " Recycle design is crossed water treatment, finally imports braiding channel.It is as follows to handle the back effect through the present invention: water inlet COD is 102.5mg/L, and TN is 28.5mg/L, and TP is 3.1mg/L, and BOD5 is 41.2mg/L.After the present invention's processing, water outlet COD is 50.4mg/L, and TN is 14.0mg/L, and TP is 1.2mg/L, and BOD5 is 15.0mg/L.
Other are with embodiment 1, and water quality treatment is certain samll cities and towns sanitary sewages on a small scale, and the processing water yield is 100m
3/ d, pre-treatment is that anaerobism (septic tank) is handled, it is as follows to handle the back effect through the present invention: water inlet COD is 125.5mg/L, and TN is 44.4mg/L, and TP is 3.2mg/L, and BOD5 is 45.5mg/L.After the present invention's processing, water outlet COD is 65.8mg/L, and TN is 15.8mg/L, and TP is 1.5mg/L, and BOD5 is 15.0mg/L.
Claims (8)
1. one kind is used for the concentric structure of treatment of domestic sewage advanced (concentric(al) circles, concentration ellipsis, concentric square, concentric Polygons etc.) undercurrent landscape green space system on a small scale, it is characterized in that: constitute by 4～6 brick concentric partition walls, the neighboring concentric partition wall is 1～3m at interval, the body of wall height is 0.7～2.5m, reduces successively with hydraulic slope to the outer ring height from inner ring.
2. landscape green space according to claim 1 system is characterized in that: the concentric partition wall of this landscape green space can adopt concentric(al) circles, concentration ellipsis, concentric square, various ways such as Polygons to be to suit measures to local conditions with one heart.
3. landscape green space according to claim 1 system is characterized in that: water hole is arranging evenly in the partition wall that with one heart " up-descending-up " Recycle design water distribution is adopted in system's operation.
4. landscape green space according to claim 1 system is characterized in that: the water inlet water distribution pipe is buried in internal system, and bottom and outer ring scribble waterproof mortar or water-proof concrete.
5. landscape green space according to claim 1 system, it is characterized in that: fill certain thickness coarse Wingdale or rhombspar, tiny Wingdale or rhombspar and band sandy soil earth between the partition wall from bottom to top, its thickness proportion is about 1.5: 1: 0.8.
6. landscape green space according to claim 1 system is characterized in that: 3) only need the first step filler filter bed periodic cleaning to the area minimum, can prevent that follow-up landscape green space from stopping up, the maintenance management workload is less.
7. landscape green space according to claim 1 system is characterized in that: the local advantage shrub class plant of plantation is as vegetation, as plants such as the tuber of dwarf lilyturf, Canna generalis Bailey, Nandina domesticas on the soil.
8. landscape green space according to claim 1 system, it is characterized in that: the outer ring is provided with ecological braiding channel, natural biology fillers such as pebbles, piece stone are set in the canal, can plant emergent, drop oxygenation when outer ring landscape green space water outlet enters braiding channel further improves directly discharging behind the effluent quality by bio-contact oxidation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101832019A CN101987761A (en) | 2009-07-29 | 2009-07-29 | Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101832019A CN101987761A (en) | 2009-07-29 | 2009-07-29 | Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage |
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| CN101987761A true CN101987761A (en) | 2011-03-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293705A (en) * | 2015-10-22 | 2016-02-03 | 南方科技大学 | Sewage treatment device and sewage treatment assembly |
| CN111960547A (en) * | 2020-08-17 | 2020-11-20 | 佛山市金净创环保技术有限公司 | Large-area artificial wetland treatment system and treatment method |
| CN113321314A (en) * | 2021-02-01 | 2021-08-31 | 北京正和恒基滨水生态环境治理股份有限公司 | Hydrologic enhancement mode constructed wetland |
| CN114524591A (en) * | 2022-03-14 | 2022-05-24 | 中国科学院生态环境研究中心 | Constructed wetland device with heat preservation effect |
-
2009
- 2009-07-29 CN CN2009101832019A patent/CN101987761A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293705A (en) * | 2015-10-22 | 2016-02-03 | 南方科技大学 | Sewage treatment device and sewage treatment assembly |
| CN105293705B (en) * | 2015-10-22 | 2018-01-30 | 南方科技大学 | Sewage treatment device and sewage treatment assembly |
| CN111960547A (en) * | 2020-08-17 | 2020-11-20 | 佛山市金净创环保技术有限公司 | Large-area artificial wetland treatment system and treatment method |
| CN113321314A (en) * | 2021-02-01 | 2021-08-31 | 北京正和恒基滨水生态环境治理股份有限公司 | Hydrologic enhancement mode constructed wetland |
| CN114524591A (en) * | 2022-03-14 | 2022-05-24 | 中国科学院生态环境研究中心 | Constructed wetland device with heat preservation effect |
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Application publication date: 20110323 |