CN105668944A - Riparian zone sewage reduction method - Google Patents
Riparian zone sewage reduction method Download PDFInfo
- Publication number
- CN105668944A CN105668944A CN201610200331.9A CN201610200331A CN105668944A CN 105668944 A CN105668944 A CN 105668944A CN 201610200331 A CN201610200331 A CN 201610200331A CN 105668944 A CN105668944 A CN 105668944A
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- zone
- riparian zone
- riparian
- soil
- plant
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a riparian zone sewage reduction method, particularly a riparian zone sewage reduction method by combining a perennial vegetation zone and an infiltration reinforcement zone. The method comprises the following step: arranging an infiltration reinforcement zone and a perennial herb sewage interception buffer zone for the riparian zone, wherein the sewage interception buffer zone is composed of a hygrophytic herb zone, a mesozoic herb zone and a xeromorphic herb zone which are sequentially arranged from the riverbank to the place far away from the riverbank, a reaping mode is adopted to reduce the growth of the annual herbs, and the infiltration reinforcement zone is arranged between the hygrophytic herb zone and the mesozoic herb zone. The method can effectively intercept sewage and increase the infiltration amount of underground water; and the perennial herbs have developed root systems, so the reasonable arrangement of the perennial herbs is beneficial to enhancing the sewage interception capacity and water/soil retention capacity of the riparian zone. By sectionallly planting and arranging the hygrophytic, hygrophytic and xeromorphic perennial herbs, the vegetation can be regulated to enhance the sewage interception capacity of the riparian buffer zone.
Description
Technical field
The invention belongs to pollution of area source control field, particularly relate to Riparian Zone plant and the method for diafiltration reinforcing tape raising rainwash retaining power.
Background technology
The ability that Riparian vegetation cuts dirty rainwash for Riparian Zone is most important, draft class plant grows intensive height due to it, and individual plants is less comparatively speaking can cover the features such as earth's surface, so its can at slow runoff, remove earth's surface Runoff contaminants and degrade, the aspect such as adsorption fouling thing plays good effect. The root system of Riparian vegetation and soil can be combined with each other, and then can form very powerful biological flocculation and precipitation power, and this is conducive to the space structure of reinforced soil, and herbaceos perennial is more more flourishing than 1 year this root system of SHENGCAO, it is possible to improve the retaining power of vegetational zone.
Efficiency for Soil Aquifer Treatment receives publicity due to the advantage of its economic and technical feasibility. Efficiency for Soil Aquifer Treatment is the sewerage ecological the treatment of a kind of artificial-strengthening, it makes full use of Wuli-Shili-Renli system approach that soil animal, soil microorganism, root system of plant and the soil perched in the soil under of earth's surface has by sewage purification, belongs to small-sized waste water soil treatment system. The filter layer of filtration system is used mostly natural river course sand after screening, gravel or the soil mixture such as wood flour, abrasive grit and some other Artificial filtering materials. The packing layer of Efficiency for Soil Aquifer Treatment is mixed into the bulky grain things such as cinder and can significantly improve the infiltration rate of soil.
Summary of the invention
The technical problem to be solved is: by the configuration of the setting of diafiltration reinforcing tape and Riparian Zone plant, improves the riparian buffer strips section dirty performance to rainwash, to reduce the pollutant entering surface water body; Simultaneously by the setting of diafiltration reinforcing tape, improve the lower water percolating capacity of rainwash, promote supplementing groundwater run off.
This invention address that its technical problem adopts following technical scheme:
Riparian Zone provided by the invention subtracts dirty method, it is that the Riparian Zone that a kind of perennial zone of vegetation is combined with diafiltration reinforcing tape subtracts dirty method, specifically: configure section dirty buffer strip of diafiltration reinforcing tape and herbaceos perennial in Riparian Zone, described section of dirty buffer strip is to be constituted by from nearly riverbank to hygromorphism herbaceous plant band, middle raw type herbaceous plant band and the xeromorph herbaceous plant band set gradually distant from riverbank, and the mode by gathering in reduces by the herbal growth of life in 1 year simultaneously;Between hygromorphism herbaceous plant band and middle raw type vegetational zone, diafiltration reinforcing tape is set.
Described hygromorphism herbaceous plant band, its vegetation width is 8～15m, plants Herba Imperatae, phragmites communis.
Described middle life and xeromorph herbaceous plant band, planting patterns employing miscegenation, its vegetation width respectively 5～10m, 10～20m, wherein: plant herbaceos perennial at middle raw type herbaceous plant band, including draping over one's shoulders alkali fringe sedge careless, different; It is with xeromorph herbaceous plant, plantation yellow bluestem, the hidden son grass of China, rye grass.
The present invention carries out cutting off of plant in 7-8 month, to reduce by 1 year herbal grain weight of life.
Described diafiltration reinforcing tape, is made up of native soil layer, soil and coarse sand mixed layer, packing layer, soil and dry crushed aggregate of plant mixed layer, bottom supporting layer from top to bottom successively.
Described diafiltration reinforcing tape, its width is 0.8～1.5m.
Described native soil layer, its thickness is 15～20cm; Soil and thick fluvial sand mixed layer thickness are 5～10cm.
Described packing layer thickness is 15～20cm, and adopting particle diameter is the zeolite of 3～5mm.
Described soil and dry crushed aggregate of plant mixed layer are that 5～10cm is thick, and wherein dry crushed aggregate of plant adopts the grass of Riparian Zone harvesting, are crushed to 1～20mm after drying, and the dry weight of soil and dry crushed aggregate of plant is than for (5～7): 1. Be mixed into dry crushed aggregate of plant and be possible not only to improve the polluter in the infiltration rate of soil, absorption runoff, and dry crushed aggregate of plant is also used as the carbon source that growth of microorganism needs after rotting, it is provided that electronics may advantageously facilitate the carrying out of microorganism Denitrification.
Described bottom supporting layer thickness is 5～10cm, and adopting particle diameter is the gravel of 30～50mm.
The present invention compared with prior art has following main advantage:
1. diafiltration reinforcing tape before rainwash enters surface water body, can carry out effectively cutting dirt, not only reduce the amount of pollutant being input in surface water body, can also improve simultaneously and ooze ratio under the rainwash water yield, thus contributing to recharge of groundwater amount.
2. diafiltration reinforcing tape filler adopts zeolite, has good nitrogen phosphorus and cuts dirty effect, wide material sources, can effectively reduce filler transport and use cost.
3. riparian buffer strips is with herbaceos perennial for subject plant, because herbaceos perennial has the root system of prosperity, its reasonable disposition is favorably improved retaining power and the water and soil holding capabilities of Riparian Zone.
Accompanying drawing explanation
Fig. 1 is Riparian Zone horizontal layout schematic diagram.
Fig. 2 is the generalized section of diafiltration reinforcing tape, and in Fig. 2, data unit is cm.
Detailed description of the invention
Method provided by the invention is a kind of method that rainwash is subtracted dirt by synergy utilizing the zone of vegetation and diafiltration reinforcing tape, and the enforcement step of the method is as follows:
1. for reducing the competitive growth of 1 year SHENGCAO basis, before plantation Riparian Zone herbaceos perennial band 2 years, carry out that life in 1 year is herbal cuts off the annual 7-8 month, it is possible to reduce 1 year herbal grain weight of life, reduce by 1 year herbal competitive advantage of life year by year. After plantation herbaceos perennial Riparian Zone, it is still desirable to maintenance management, annual 7-8 month carries out the removing of annual herb plant. The dominance of herbaceos perennial can increase year by year, until stable superiority growth.
2. herbaceos perennial configuration, nearly riverbank is hygromorphism herbaceous plant, it is possible to for Herba Imperatae, phragmites communis etc., vegetation width is 8～15m;At place distant from riverbank, can configuring perennial middle raw type and xeromorph herbaceous plant, middle raw type plant is as draped over one's shoulders alkali fringe sedge careless, different, and vegetational zone width is 5～10m, draft xeromorph plant such as yellow bluestem, the hidden son grass of China and rye grass, vegetational zone width is 10～20m. Owing to some Riparian Zone is by the impact manually building road and other building by laying bricks or stones, Riparian Zone overall width greatly reduces, the width designed by this patent can not be reached, can carry out the configuration of vegetational zone when being embodied as according to certain ratio, the width ratio of hygromorphism, middle raw type and the configuration of xeromorph vegetational zone substantially: 1.5:1:2.
3. diafiltration reinforcing tape is arranged between hygromorphism and middle raw type vegetational zone, if all arrange diafiltration reinforcing tape along Riparian Zone, is subject to the restriction of cost, therefore, is typically in weight runoff pollution district and carries out the setting of diafiltration reinforcing tape, it is possible to section dirty performance of strengthening Riparian Zone. The setting of diafiltration reinforcing tape, first carries out engineering excavation, and cutting depth is 60 ± 15cm, determines in work progress the need of support according to soil property situation. Then loading bottom supporting layer with 30～50mm gravel, thickness is 5～10cm. Riparian Zone herbaceous plant after harvesting is dried, it is processed into 1～20mm length with the hay grinder of processing roughage, by its with soil with (5～7): the dry ratio of 1, filling 5～10cm on supporting layer, this layer is primarily to provides nitrogen in runoff to carry out the carbon source needed for denitrification. Carrying out the filling of 15～20cm zeolite filler layer afterwards, sized zeolite particles is 3～5mm, and this layer is the Main Function layer that the nitrogen in runoff and phosphorus are removed. Then, carrying out the filling of 5～10cm soil and thick fluvial sand mixed layer, the effect of this layer is mainly transition zone, it is prevented that too much soil particle blocking zeolite filler layer, a part of pollutant also carries out quick diafiltration removal simultaneously. Finally, the filling of the top layer soil that thickness is 15～20cm is completed. In whole implementation process, when noticing that carrying out soil excavates, by individually placed for top layer soil, ensureing that top layer is still former top layer soil when finally filling, this contributes to retaining native soil layer function microorganism etc., without influence on the plant growth medium effect of native soil layer.
4. after diafiltration reinforcing tape is loaded, plant herbaceos perennial on diafiltration reinforcing tape top layer, to be promoted the percolation of diafiltration reinforcing tape by root system of plant.
Below in conjunction with specific embodiments and the drawings, the present invention is described in further detail.
Embodiment 1:
Adopting Beijing Caobai River Riparian Zone soil, lab scale simulation diafiltration reinforcing tape processes runoff pollution, and comparison sheet seepage flow removes the difference of pollutant simultaneously. Diafiltration reinforcing tape analogue experiment installation is made up of lucite, and its main part height 310mm, long 1500mm, wide 150mm, for ribbon; Its orlop is provided with the gravel layer that particle diameter is 5～8mm, gravel layer top is the dry weight of the 7cm thickness sawdust mixing with soil layer than 1:7, one layer of geotextiles is laid, in order to stop that the particulate matter in lower infiltration stream enters bottom outlet between gravel layer and sawdust mixing with soil layer; Being filter layer on sawdust mixing with soil layer top, the dry weight thick for the 7cm thick fluvial sand than 1:1 mix mutually with filler and constitute, filler is zeolite. Simultaneously take account of herbal growth, 15cm thickness soil horizon is set on the top of thick fluvial sand Yu zeolite mixture layer.
In runoff simulation, initial contamination substrate concentration is: total nitrogen 7mg/L, ammonia nitrogen 3mg/L, nitrate nitrogen 4mg/L, total phosphorus 0.8mg/L.After simulation diafiltration reinforcing tape is arranged, to the clearance of the total nitrogen of runoff simulation waste water, ammonia nitrogen, nitrate nitrogen and total phosphorus respectively 40.9%, 60.6%, 37.9% and 60.6%, and the comparison soil device of unused zeolite is to the clearance of total nitrogen, ammonia nitrogen, nitrate nitrogen and total phosphorus respectively 28.2%, 15.9%, 31.2% and 42.3%. It can be seen that zeolite has good nitrogen phosphorus retaining power, diafiltration reinforcing tape can increase the Riparian Zone removal capacity to pollutant.
Nitrogen and phosphorus pollutants is removed in part through rainwash in diafiltration reinforcing tape, removes in part through seepage flow. Analog result finds, the ability being removed the pollutant such as nitrogen, phosphorus by seepage flow is significantly higher than rainwash, and the seepage flow water yield is more big, and total removal rate and the unit are pollutant removal load of Riparian Zone nitrogen and phosphorus pollutants are more high. Simulation diafiltration reinforcing tape adds ratio of oozing under runoff water, the surface low of comparison soil device is 1.73 with the ratio of seepage discharge, and the ratio of the surface low and seepage discharge simulating diafiltration reinforcing tape is 1.02, the reduction to Riparian Zone runoff water meter seepage flow ratio of the diafiltration reinforcing tape, help lend some impetus to and ooze under Riparian Zone current, not only recharge groundwater to a certain extent, also enhances the Riparian Zone removal effect to nitrogen and phosphorus pollutants.
Embodiment 2:
Utilizing the simulation small testing device of embodiment 1, all adopt Riparian Zone soil to be filled with, plantation rye grass and annual Radix seu Caulis Embeliae Parviflorae, paradise grass, be simulated Riparian zone and cut dirty experiment respectively. 4 small testing devices are connected, the Riparian Zone of 6 meters of width of simulation. In runoff simulation, initial contamination substrate concentration is: total nitrogen 7mg/L, ammonia nitrogen 3mg/L, nitrate nitrogen 4mg/L, total phosphorus 0.8mg/L. It is shown that rye grass is better to the removal effect of total nitrogen, ammonia nitrogen, nitrate nitrogen and total phosphorus. Rye grass is to the clearance of 4 kinds of pollutant respectively 30.1%, 21.9%, 33.6% and 40.5%, and treatment effect is higher than Radix seu Caulis Embeliae Parviflorae (26.7%, 18.0%, 23.5% and 31.2%) and paradise careless (24.6%, 19.2%, 22.1% and 29.4%). This illustrates that herbaceos perennial is planted in Riparian Zone, and the disposal ability of nitrogen and phosphorus pollutants is better than annual herbaceous plant by it.
Claims (10)
1. a Riparian Zone subtracts dirty method, it is characterized in that the Riparian Zone that a kind of perennial zone of vegetation is combined with diafiltration reinforcing tape subtracts dirty method, specifically: configure section dirty buffer strip of diafiltration reinforcing tape and herbaceos perennial in Riparian Zone, described section of dirty buffer strip is to be constituted by from nearly riverbank to hygromorphism herbaceous plant band, middle raw type herbaceous plant band and the xeromorph herbaceous plant band set gradually distant from riverbank, and the mode by gathering in reduces by the herbal growth of life in 1 year simultaneously; Between hygromorphism herbaceous plant band and middle raw type vegetational zone, diafiltration reinforcing tape is set.
2. Riparian Zone according to claim 1 subtracts dirty method, it is characterised in that described hygromorphism herbaceous plant band, its vegetation width is 8～15m, plants Herba Imperatae, phragmites communis.
3. Riparian Zone according to claim 1 subtracts dirty method, it is characterized in that described middle life and xeromorph herbaceous plant band, planting patterns adopts miscegenation, its vegetation width respectively 5～10m, 10～20m, wherein: plant perennial plant at middle raw type herbaceous plant band, including draping over one's shoulders alkali fringe sedge careless, different; It is with xeromorph herbaceous plant, plantation yellow bluestem, the hidden son grass of China, rye grass.
4. Riparian Zone according to claim 1 subtracts dirty method, it is characterized in that carrying out cutting off of plant in 7-8 month, to reduce by 1 year herbal grain weight of life.
5. Riparian Zone according to claim 1 subtracts dirty method, it is characterised in that described diafiltration reinforcing tape, is made up of native soil layer, soil and coarse sand mixed layer, packing layer, soil and dry crushed aggregate of plant mixed layer, bottom supporting layer successively from top to bottom.
6. Riparian Zone according to claim 5 subtracts dirty method, it is characterised in that described diafiltration reinforcing tape, its width is 0.8～1.5m.
7. Riparian Zone according to claim 5 subtracts dirty method, it is characterised in that described native soil layer, and its thickness is 15～20cm; Soil and thick fluvial sand mixed layer thickness are 5～10cm.
8. Riparian Zone according to claim 5 subtracts dirty method, it is characterised in that described packing layer thickness is 15～20cm, and adopting particle diameter is the zeolite of 3～5mm.
9. Riparian Zone according to claim 5 subtracts dirty method, it is characterized in that described soil and dry crushed aggregate of plant mixed layer are that 5～10cm is thick, wherein dry crushed aggregate of plant adopts the grass of Riparian Zone harvesting, being crushed to 1～20mm after drying, the dry weight of soil and dry crushed aggregate of plant is than for (5～7): 1.
10. Riparian Zone according to claim 5 subtracts dirty method, it is characterised in that described bottom supporting layer thickness is 5～10cm, and adopting particle diameter is the gravel of 30～50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200331.9A CN105668944B (en) | 2016-03-31 | 2016-03-31 | A kind of Riparian Zone subtracts dirty method |
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| CN201610200331.9A CN105668944B (en) | 2016-03-31 | 2016-03-31 | A kind of Riparian Zone subtracts dirty method |
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| CN105668944B CN105668944B (en) | 2018-12-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862599A (en) * | 2018-06-19 | 2018-11-23 | 江苏东珠景观股份有限公司 | A kind of wetland purification dynamic regulation system |
| CN110790453A (en) * | 2019-11-04 | 2020-02-14 | 中国科学院华南植物园 | Water and soil conservation water quality purification method and system for water source |
| CN111579451A (en) * | 2020-04-29 | 2020-08-25 | 南京理工大学 | Method for intercepting urban initial surface runoff by improving soil infiltration capacity |
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| CN108862599A (en) * | 2018-06-19 | 2018-11-23 | 江苏东珠景观股份有限公司 | A kind of wetland purification dynamic regulation system |
| CN110790453A (en) * | 2019-11-04 | 2020-02-14 | 中国科学院华南植物园 | Water and soil conservation water quality purification method and system for water source |
| CN111579451A (en) * | 2020-04-29 | 2020-08-25 | 南京理工大学 | Method for intercepting urban initial surface runoff by improving soil infiltration capacity |
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| CN105668944B (en) | 2018-12-28 |
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