CN115217061A - A Governance System Applicable to Broken Head Rivers - Google Patents

Abstract

The invention discloses a treatment system suitable for a broken creek, which comprises a preliminary purification unit, a water distribution unit and a core purification and stabilization unit, wherein when runoff pollution is converged into a canal from a centralized runoff convergence bed, the water is firstly intercepted and purified by a water convergence purification bed, the purified water enters a diversion water distribution ring channel, the water is guided, the migration path converged into the polluted water is changed, the hydraulic retention time is prolonged, the water in the diversion water distribution ring channel is input into the central area of the broken creek through a dispersion water distribution pipe, the concentrated convergence of the runoff into the dispersed water distribution is realized, and the core purification and stabilization unit comprises a water channel, a deep pool and an embankment, so that a ecological pattern with various forms and different deep sections on a plane is constructed, the internal structure of a wetland is formed, the original hydraulic basic conditions of the broken creek are changed, the high-efficiency continuous purification of source pollutants is realized by combining with planted aquatic plants, and the promotion and stabilization of ecological functions of the creek self-purification and the like are driven.

Description

A Governance System Applicable to Broken Head Rivers

technical field

The invention relates to the technical field of environmental protection, in particular to a treatment system suitable for a broken-headed river bank.

Background technique

Comprehensive treatment of the water environment of polluted rivers is an important aspect of water environment treatment and water ecological restoration. The treatment route generally follows from source control and pollution control, water quality improvement to ecological restoration, including widely used wetland treatment technologies. It has the advantages of good treatment effect, low construction and operation and maintenance costs, etc., and the comprehensive effect of substrates, plants, microorganisms, etc., to achieve water quality purification.

In line with the principles of respecting and conforming to nature, ecological construction methods are used to build wetland systems close to nature. In recent years, water quality improvement and ecological restoration of rivers have become a research hotspot, and large-scale applications have been carried out, such as restoration of submerged plants. However, most of these technologies focus on the restoration of aquatic plants, and the comprehensive consideration of substrate, water quality, and local microenvironment is still insufficient. In the plain river network area, the general social economy is relatively developed, the land resources are scarce, and the phenomenon of production and life occupying the river space is more prominent, resulting in the appearance of a large number of dead river bangs, especially in rural areas, and the bangtou area has become an important river bang. From the perspective of external pollutant input, the head of the river bank is the key place for non-point source inflow, and from the perspective of the linear structure of the river bank itself, it is also the main space for serious accumulation of pollutants, which brings certain benefits to the management and restoration of the river bank. difficulty.

Therefore, in the process of river bank management and restoration, how to manage and repair the broken head river bank has become an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a treatment system suitable for the broken ends of rivers, to solve the problems existing in the above-mentioned prior art, to alleviate the pollution at the broken ends of the rivers, and to improve the water quality of the broken ends of the rivers.

To achieve the above object, the present invention provides the following scheme: the present invention provides a kind of governance system applicable to the broken head river bank, including:

A preliminary purification unit, the preliminary purification unit includes a concentrated runoff inlet channel and a water purification bed, the concentrated runoff inlet channel is communicated with the water flow outside the broken end of the river, and the water collection purification bed can Concentrate the water flow introduced by the runoff into the channel for purification;

a water distribution unit, the water distribution unit includes a diversion and water distribution ring channel and a dispersed water distribution pipe, the water diversion and water distribution ring channel is communicated with the water outlet of the collecting water purification bed, and the water diversion and water distribution ring channel It is arranged around the edge of the broken end of the river bank, the canal bottom of the diversion water distribution ring channel is lower than the riverbed of the broken end of the river bank, and one end of the water distribution pipe is connected to the water diversion and water distribution ring channel The other end of the water distribution pipe is connected with the area enclosed by the diversion water distribution ring;

a core purification and stabilization unit, the core purification and stabilization unit is arranged in the area enclosed by the diversion and water distribution ring canal, the core purification and stabilization unit includes a water channel, a deep pool, a submerged embankment and aquatic plants, the said core purification and stabilization unit The water channel is communicated with the deep pool, the submerged embankment is arranged on the water channel and the side of the deep pool away from the diversion and water distribution ring channel, and the aquatic plants are planted on the riverbed of the broken end of the river. on and on the embankment.

Preferably, the diversion and water distribution ring channel is a U-shaped structure with two ends sealed, and the opening of the U-shaped structure formed by the water diversion and water distribution ring channel is arranged in a direction away from the concentrated runoff confluence channel.

Preferably, the catchment purification beds are arranged in the diversion water distribution ring, the number of the catchment purification beds is two groups, and the two sets of the catchment purification beds are arranged in the diversion water distribution ring the two sides of the communication port between the canal and the concentrated runoff into the canal; the bottom of the water purification bed is lower than the bottom of the diversion and water distribution ring channel, and the top of the water purification bed is higher than the The canal bottom of the diversion water distribution ring channel, the water collecting purification bed includes a purification bed fixed net and a purification bed matrix arranged in the purification bed fixed net, and the purification bed matrix can prevent the water entering the diversion and distribution The water flow in the ring canal is intercepted and purified.

Preferably, a sedimentation-promoting tank is provided on the side of the diversion water distribution ring close to the water channel, the sedimentation-promoting tank is located at the bottom of the outlet side of the dispersed water distribution pipe, and a sedimentation-promoting filler is arranged in the sedimentation-promoting tank , the top of the sedimentation-promoting filler is flush with the riverbed of the broken end of the river bank;

The dispersing water distribution pipes and the sedimentation promoting tanks are in one-to-one correspondence and are in multiple groups; a screen is arranged at one end of the outlet of the dispersing water distribution pipes.

Preferably, a side wall of the diversion and water distribution ring channel close to the water channel includes two groups of row piles arranged in parallel, and a canal foundation is filled between the two groups of piles, and the top of the canal foundation is filled with a canal foundation. Above the riverbed of the broken end of the river bank, the top of the canal foundation is provided with a roofing gabion net, and the roofing gabion net is filled with a roofing matrix, and the top of the roofing gabion net and the piles of the row piles. The tops are flush.

Preferably, a three-dimensional mesh pad is laid in the water channel and the deep pool, the three-dimensional mesh pad extends to the riverbed of the broken end of the river on the side away from the submerged embankment, and the three-dimensional mesh pad is fixed by using The nails are fixed on the riverbed of the broken head of the river.

Preferably, the longitudinal section of the water channel is an inverted trapezoid, and the bottom of the longitudinal section of the deep pool is an arc; the number of the deep pools is two groups, and the two groups of deep pools are connected by the water channel, and the The water channel is an open ring structure.

Preferably, the submerged embankment comprises a submerged embankment gabion net and a submerged embankment matrix filled in the submerged embankment gabion net, wherein a planting tube is arranged in the submerged embankment matrix, and the top of the planting tube protrudes from the The submerged embankment matrix is filled with the planting matrix, and the aquatic plants are planted in the planting tube.

Preferably, a through hole is provided on the side wall of the planting tube; the aquatic plants include emergent plants and submerged plants.

Preferably, the area of the water channel and the deep pool accounts for 30% to 40% of the area of the area enclosed by the diversion and water distribution ring, and the planting area of the aquatic plants accounts for the diversion and water distribution ring. 40% to 60% of the area of the enclosed area.

The present invention has achieved the following technical effects with respect to the prior art:

The treatment system of the present invention is suitable for the broken head river bank. When the runoff pollution is collected by the concentrated runoff confluence channel, the water quality is first purified by interception and purification by the catchment purification bed. After purification, the water flow enters the diversion water ring. The canal can guide the water flow, change the migration path of the polluted water body, and prolong the hydraulic retention time. The water flow in the diversion and distribution ring canal is fed into the central area of the broken end of the river bank through the distributed water distribution pipe, so that the runoff can be concentrated into the dispersed water distribution channel. , the core purification and stabilization unit includes water channels, deep pools and buried embankments, so as to build a base habitat pattern with various forms on the plane and different depths of cross-sections, form the internal structure of the wetland, change the hydraulic basic conditions of the original broken ends of the river, and combine the planting Aquatic plants can achieve efficient and continuous purification of surface pollutants, and promote the improvement and stability of ecological functions such as river self-purification.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the schematic diagram of the governance system applicable to the broken head river bank of the present invention;

Fig. 2 is the cutaway schematic diagram along the A-A direction in Fig. 1;

Fig. 3 is the cutaway schematic diagram along B-B direction in Fig. 1;

Fig. 4 is the cutaway schematic diagram along C-C direction in Fig. 1;

Fig. 5 is the cutaway schematic diagram along D-D direction in Fig. 1;

FIG. 6 is a schematic cross-sectional view along the E-E direction in FIG. 1 .

Among them, 1 is the confluence channel of concentrated runoff, 2 is the water purification bed, 201 is the fixed net of the purification bed, 202 is the purification bed matrix, 3 is the diversion water distribution ring channel, 301 is the row pile, and 302 is the canal ridge foundation. 303 is the roofing gabion net, 304 is the roofing substrate, 4 is the water distribution pipe, 5 is the water channel, 6 is the deep pool, 7 is the submerged embankment, 701 is the submerged embankment gabion net, 702 is the submerged embankment matrix, and 703 is the planting pipe , 704 is a planting substrate, 8 is an aquatic plant, 9 is a sedimentation-promoting tank, 10 is a sedimentation-promoting filler, and 11 is a three-dimensional mesh pad.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a treatment system suitable for the broken ends of rivers, to solve the problems existing in the above-mentioned prior art, to alleviate the pollution at the broken ends of the rivers, and to improve the water quality of the broken ends of the rivers.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 1-6 , wherein, FIG. 1 is a schematic diagram of a management system suitable for a broken head river bank according to the present invention, FIG. 2 is a schematic cross-sectional view along the A-A direction in FIG. 1 , and FIG. 3 is a B-B direction in FIG. 1 . 4 is a schematic sectional view along the C-C direction in FIG. 1 , FIG. 5 is a schematic sectional view along the D-D direction in FIG. 1 , and FIG. 6 is a schematic sectional view along the E-E direction in FIG. 1 .

The present invention provides a treatment system suitable for a broken head river bank, including a preliminary purification unit, a water distribution unit, and a core purification and stabilization unit, wherein the preliminary purification unit includes a concentrated runoff inlet channel 1 and a confluence purification bed 2, and the concentrated runoff The inflow channel 1 is connected to the water flow outside the broken end of the river, and the water purification bed 2 can purify the water flow introduced by the concentrated runoff inflow channel 1; the water distribution unit includes the diversion water distribution ring channel 3 and the scattered water distribution pipes 4. The water diversion and distribution ring channel 3 is connected with the water outlet of the catchment purification bed 2. The water diversion and water distribution ring channel 3 is arranged around the edge of the broken end of the river bank. The bottom of the water diversion and water distribution ring channel 3 is lower than the river In the riverbed with broken ends, one end of the water distribution pipe 4 is connected with the diversion water distribution ring 3, and the other end of the distributed water distribution pipe 4 is connected with the area enclosed by the water distribution ring 3; the core purification and stabilization unit Set in the area enclosed by the diversion and distribution water ring channel 3, the core purification and stabilization unit includes a water channel 5, a deep pool 6, a submerged embankment 7 and aquatic plants 8. The water channel 5 is connected with the deep pool 6, and the submerged embankment 7 is set in The water channel 5 and the deep pool 6 are far from the side of the diversion and distribution water ring channel 3 , and the aquatic plants 8 are planted on the riverbed of the broken end of the river and on the embankment 7 .

The treatment system of the present invention is suitable for the broken head river bank. When the runoff pollution is collected by the concentrated runoff confluence channel 1, the water quality is first purified by interception and purification by the confluence purification bed 2, and the water flow enters the diversion cloth after purification. The water ring channel 3 guides the water flow, changes the migration path of the polluted water body, and prolongs the hydraulic retention time. The water flow in the diversion and distribution ring channel 3 is input into the central area of the broken end of the river through the distributed water distribution pipe 4 to realize the concentration of runoff. Into the distributed water, the core purification and stabilization units include water channels 5, deep pools 6 and submerged embankments 7, so as to build a base habitat pattern with various forms on the plane and different depths of cross-sections, form the internal structure of the wetland, and change the original river bang. Based on the basic hydraulic conditions, combined with the planted aquatic plants8, the efficient and continuous purification of the source pollutants can be achieved, and the ecological functions such as self-purification of the river can be improved and stabilized.

Among them, the diversion and water distribution ring channel 3 is a U-shaped structure with both ends sealed, the broken end area of the river bank surrounded by the water diversion and water distribution ring channel 3 is horseshoe-shaped, and the opening of the U-shaped structure formed by the water diversion and water distribution ring channel 3 faces toward It is set away from the direction of the concentrated runoff inflow channel 1 , so that the runoff water flow introduced by the concentrated runoff inflow channel 1 can smoothly enter the diversion and water distribution ring channel 3 . It also needs to be explained here that in practical applications, multiple concentrated runoff inflow channels 1 can also be set, and a confluence purification bed 2 can be set at the runoff inflow channel with the largest diameter, or each concentrated runoff inflow channel can be set up. The catchment purification bed 2 is set at the canal 1, so that the catchment purification bed 2 can initially intercept and purify the runoff pollution.

Specifically, the catchment purification bed 2 is arranged in the diversion water distribution ring 3, and the number of catchment purification beds 2 is two groups. Both sides of the communication port of the inlet channel 1, so that the water flow entering the diversion water distribution ring channel 3 is intercepted and purified. In order to enhance the interception and purification effect of the catchment purification bed 2, the bottom of the catchment purification bed 2 is lower than the canal bottom of the diversion water distribution ring 3, and the top of the catchment purification bed 2 is higher than the canal of the diversion water distribution ring 3 At the bottom, the sink water purification bed 2 includes a purification bed fixed net 201 and a purification bed matrix 202 arranged in the purification bed fixed net 201. The purification bed matrix 202 can intercept and purify the water flow entering the diversion water distribution ring 3, purifying The bed matrix 202 can be made of ordinary gravel with a particle size of 6.0cm-8.0cm. Through the filtration, precipitation and microbial degradation of the purification bed matrix 202, preliminary interception and purification of runoff pollution can be realized, and the treatment efficiency of the subsequent space can be stabilized.

At the same time, the side of the diversion water distribution ring channel 3 close to the water channel 5 is provided with a sedimentation-promoting tank 9, and the sedimentation-promoting tank 9 is located at the bottom of the outlet side of the water distribution pipe 4. The diameter of the water distribution pipe 4 can be selected from 150mm to 200mm. The bottom of the water distribution pipe 4 is 0.15m to 0.20m higher than the riverbed at the broken end of the river, and a sedimentation-promoting tank 9 is arranged at the bottom, and a sedimentation-promoting filler 10 is arranged in the sedimentation-promoting tank 9. The top of the sedimentation-promoting filler 10 is connected to the broken end of the river. The riverbeds are flush with each other, and the sedimentation tank 9 can intercept and purify the incoming runoff again, and distribute water locally again. For the construction of the sedimentation-promoting tank 9, local excavation can be carried out first under the dispersing water distribution pipe 4, and the excavation depth is 0.2m to 0.3m. The tank body is processed with PVC plates or larger diameter PVC pipes. Triangular weir, determine the size of the triangular weir according to the specifications, bend it into a semi-circle and insert it into the excavation area. The diameter of the semi-circle is 0.3m to 0.5m. It can also be directly cut and processed by PVC pipes of the same specification. The bottom of the triangular weir at the top of the pool is lower than the water distribution pipe. The bottom is 0.1m. After the sedimentation-promoting tank 9 is completed, a mesh bag is put into the tank for paving with gravel as the sedimentation-promoting filler 10. The diameter of the gravel is 2.0cm-4.0cm, and the filling height is the same as that of the river bed.

In this specific embodiment, the dispersing water distribution pipes 4 and the sedimentation promoting pools 9 are in one-to-one correspondence and are in multiple groups, and the dispersing water distribution pipes 4 can be evenly distributed around the axis of the diversion and water distribution ring canal 3. It should be noted that in the centralized There is no distributed water distribution pipe 4 between the runoff confluence channel 1 and the catchment purification bed 2 to prevent the polluted runoff from directly entering the area where the core purification and stabilization unit is located without being purified. In addition, in actual operation, a screen can be set at one end of the outlet of the dispersing water distribution pipe 4. The mesh of the screen is 2.0cm-3.0cm to block larger impurities. Fishing nets can be used. The outlet end of the water distribution pipe 4 extends 30.1 m from the diversion water distribution ring.

More specifically, the side wall of the diversion water distribution ring channel 3 close to the water channel 5 includes two groups of piles 301 arranged in parallel, and a canal foundation 302 is filled between the two groups of piles 301, and the top of the canal foundation 302 is high. On the riverbed where the river bank is broken, a roofing gabion net 303 is set on the top of the canal ridge foundation 302. The roofing gabion net 303 is filled with a roofing matrix 304. When constructing the diversion and water distribution ring canal 3, the original boundary space of the river bank is fully utilized, and the wetland shape is constructed according to the trend, which is connected with the concentrated runoff into the canal 1. The 3 end faces of the diversion and water distribution ring canal can be rectangular or trapezoidal. The soil is not easy to collapse, and trapezoidal excavation can be used without protection. The width of the water ring canal 3 is generally 0.8m~1.2m, the top width of the trapezoidal section is generally ≤1.5m, the elevation of the bottom of the canal is lower than the riverbed at the broken head of the river, generally 0.4m~0.6m lower, and the outer canal ridge conforms to the section at the head of the river. Topography and topography, after excavation, the earthwork is turned to the outer area. The elevation of the inner canal ridge top is 0.4m~0.6m higher than the riverbed, and the width is 0.5m~0.8m. Filled with roofing matrix 304, it becomes an auxiliary measure for the secondary dispersing water distribution system when the large flow runoff converges. The roofing gabion mesh 303 can be filled with gravel by galvanized or plastic-coated mesh. Choose 6.0cm～8.0cm, and choose the row piles 301 to fix according to the soil conditions on both sides of the inner channel ridge, which is beneficial to improve the stability of the gabion net 303.

In addition, a three-dimensional mesh pad 11 is laid in the water channel 5 and the deep pool 6 to limit the growth of plants and ensure that the water channel 5 and the deep pool 6 can function normally. On the riverbed, the three-dimensional mesh pad 11 is fixed on the riverbed with the broken end of the river bank by fixing nails, which improves the structural stability of the three-dimensional mesh pad 11 and prevents the three-dimensional mesh pad 11 from being washed away and dislocated by the water flow.

In this specific embodiment, the longitudinal section of the water channel 5 is an inverted trapezoid, the bottom width of the water channel 5 is 0.5m-1.0m, the bottom of the water channel 5 is 0.6m-1.0m lower than the riverbed, and the bottom of the longitudinal section of the deep pool 6 is arc-shaped, The number of deep pools 6 is two groups, and the two groups of deep pools 6 are connected by a water channel 5, and the water channel 5 is an open ring structure. In practical applications, the number and position of the deep pools 6 can also be set according to the shape of the broken end of the river. , and at the same time make adaptive changes to the shape of the water channel 5 .

Further, the submerged embankment 7 includes a submerged embankment gabion net 701 and a submerged embankment matrix 702 filled in the submerged embankment gabion net 701. A planting tube 703 is arranged in the submerged embankment matrix 702, and the top of the planting tube 703 protrudes from the submerged embankment. The substrate 702 is filled with a planting substrate 704 in the planting tube 703 , and the aquatic plants 8 are planted in the planting tube 703 . The submerged embankment 7 is set on the inner side of the water channel 5, with a rectangular section structure, the width is 0.5m~1.0m, and the height is generally 0.5m. The mesh diameter is smaller than the particle size of the submerged embankment matrix 702. The submerged embankment substrate 702 is made of gravel, volcanic rock or other wetland matrix materials, with a particle size of 6.0m to 8.0cm. Along the center line of the upper edge of the submerged embankment 7, emergent water is planted every 2.0m. Plants can be processed into planting pipes 703 by using PVC pipes, which are planted by soilless culture. The diameter of planting pipes 703 is 110 mm, the height is 0.3 m, and the lower end of the planting pipe 703 is 0.2 m deep into the submerged embankment 7. A through hole is provided on the side wall, and the particle size of the planting matrix 704 is less than or equal to 1.0 cm. It should be noted here that the aquatic plants 8 include emergent plants and submerged plants. Emergent plants can be planted in the planting tube 703 and submerged plants can be planted on the riverbed.

The treatment system of the present invention, which is suitable for the broken head river bank, is constructed based on the spatial structure, and realizes functions such as water distribution, interception, purification and stability. 30% to 40% of the area of the formed area, and the planting area of the aquatic plants 8 accounts for 40% to 60% of the area of the area enclosed by the diversion and water distribution canal 3. Under the premise of conforming to nature, the spatial layout of the wetland plane and cross-sectional structure is strengthened, which drives the change of hydraulic conditions. Multiple water distributions along the route realize multi-path flow of pollutants in the system, prolong the hydraulic retention time, and combine with Substrate laying, wetland aquatic plants 8, etc., play a comprehensive role in the adsorption, filtration, precipitation, absorption and degradation of soil, substrate, plants, microorganisms, etc., to achieve continuous interception and purification of runoff pollution, and at the same time improve the water quality of broken ends of the river, drive the river The environmental quality of Bangshui has been improved and the ecological function has been improved.

The following is a further explanation of the governance system applicable to the Duotouhebang of the present invention through specific embodiments.

The average width of the broken end of the river is 18.0m, and the total area of the constructed horseshoe-shaped wetland is 920m ² .

In this embodiment, there is only one head of the river, and the confluence channel 1 of the concentrated runoff is the original channel, with a width of 0.8m. The bed fixing net 201 is 1.0m×0.8m in size, with a diameter of 2.0cm, made of stainless steel, and is inserted into the soil at the mouth of the canal; Up to about 0.1m away from the two distributed water distribution pipes 4, the catchment purification bed 2 is constructed by relying on the canal bottom of the outer diversion water distribution ring canal 3. On the basis of the normal canal bottom, dig down 0.2m and use the purification bed to fix it. The net 201 is fixed, and the net 201 of the purification bed is made of galvanized steel wire mesh, the mesh size is ≤5.0cm, and the interior of the purification bed matrix 202 is filled with ordinary gravel, with a particle size of 6.0cm-8.0cm, and the filling is 0.1m above the normal canal bottom. , the purification bed fixed net 201 is closed and fastened.

内侧渠埂由渠埂基础302和压顶石笼网303(压顶石笼网303内填充有压顶基质304)组成，其中渠埂基础302宽0.5m，高出河床0.4m，压顶石笼网303宽度为0.5m，高0.2m，压顶石笼网303采用镀锌钢丝网并再穿丝，网孔≤4.0cm，压顶基质304为普通砾石，砾石直径6.0cm～8.0cm，内侧渠埂两侧均可采用排桩301固定。The diversion and water distribution ring channel 3 has a rectangular cross-section structure, with a width of 1.0m and a depth of 0.5m lower than the river bed. The outside is fixed with row piles 301.

The inner channel ridge is composed of the channel ridge foundation 302 and the roof gabion net 303 (the roof gabion net 303 is filled with the roof pressure matrix 304), wherein the canal ridge foundation 302 is 0.5m wide, 0.4m above the river bed, and the roof gabion net 303 is wide. It is 0.5m and 0.2m high. The roofing gabion net 303 is made of galvanized steel wire mesh and then threaded, and the mesh size is ≤4.0cm. The piles 301 can be used for fixing.

进水端包裹渔网，渔网网孔3.0cm，出水端伸出0.1m，管底标高高于河床0.15m；促沉池9预先以分散布水管4为中心向周边下挖，深度0.2m，池壁采用PVC板裁剪，板厚5.0mm，顶端裁剪加工直角三角堰，堰高3.0cm，折弯成半圆插入河床及渠埂基础302中，外侧回填，折弯后半圆直径0.3m，三角堰堰底距分散布水管4的管底0.1m，促沉池9内的袋装促沉填料10采用普通砾石，砾石直径2.0cm～4.0cm，每网袋重量约5.0kg，装填高度与河床持平。In the water distribution unit, the distributed water distribution pipes 4 are pre-buried in the canal ridge foundation 302. In this example, five distributed water distribution pipes 4 are arranged.

The water inlet end is wrapped with a fishing net, the net hole of the fishing net is 3.0cm, the outlet end extends 0.1m, and the elevation of the bottom of the pipe is 0.15m higher than the river bed; The wall is cut with PVC board, the board thickness is 5.0mm, the top is cut and processed with a right-angled triangular weir, the weir height is 3.0cm, it is bent into a semicircle and inserted into the river bed and canal ridge foundation 302, the outside is backfilled, the semicircle diameter after bending is 0.3m, the triangular weir The bottom is 0.1m away from the bottom of the water distribution pipe 4. The bagged sedimentation-promoting filler 10 in the sedimentation tank 9 is made of ordinary gravel, the diameter of the gravel is 2.0cm-4.0cm, the weight of each mesh bag is about 5.0kg, and the filling height is the same as the river bed.

In the core purification and stabilization unit, the wetland aquatic plants 8 are mainly emergent plants and submerged plants.

管径的UPVC管加工而成，管长0.3m，下端向上0.1m处管壁穿孔，穿孔区宽度为0.10m，孔径为3.0mm，种植管703沿潜堤7中心线预埋于潜堤基质702中，并从潜堤石笼网701的顶盖穿出，预埋深度0.2m，种植管703内种植的挺水植物采用无土栽培方式进行，本实例中选择黄菖蒲，先置于种植管703中，后装填种植基质704，采用粒径≤1.0cm的砾石，装填至与种植管703的管顶持平；深潭6的平面为圆形，直径3.5m，深潭6深度低于河床0.6m，其中的三维网垫11及潜堤7系统构建方式与水道5构建方式相同；湿地水生植物8采用水葱、黄菖蒲等挺水植物，苦草等沉水植物，根据本实例中各类地形构建后，在其它非限制生长区域进行栽植，其中挺水植物占湿地水生植物8总面积40％，沉水植物占60％。Among them, in this embodiment, the excavation width of the bottom of the water channel 5 is 0.6 m, the depth of the water channel 5 is 0.8 m lower than the river bed, and the three-dimensional mesh pad 11 is made of polyamide three-dimensional mesh pad 11, which is evenly laid on the bottom and wall of the water channel 5, and is connected with the submerged embankment 7. The shoulder on the non-adjacent side protrudes with a protruding length of 0.8m and is fixed with matching fixing nails; the overall width of the submerged embankment 7 is 0.6m and the height is 0.5m, and it is only set on the inner side of the water channel 5, of which the periphery of the submerged embankment 7 is fixed by the submerged embankment. Gabion mesh 701, prefabricated and laid on site, made of galvanized steel wire, mesh diameter 5.0cm, submerged embankment matrix 702 made of volcanic rock, particle size 6.0cm-8.0cm, planting tube 703 made of volcanic rock

The diameter of the UPVC pipe is processed, the pipe length is 0.3m, the pipe wall is perforated at 0.1m upward from the lower end, the width of the perforated area is 0.10m, and the hole diameter is 3.0mm. In 702, and through the top cover of the buried dyke gabion net 701, the pre-buried depth is 0.2m, and the emergent plants planted in the planting tube 703 are carried out in a soilless cultivation method. In the pipe 703, the planting matrix 704 is filled later, and gravel with a particle size of ≤1.0cm is used to fill it to the same level as the pipe top of the planting pipe 703; 0.6m, wherein the three-dimensional mesh pad 11 and the submerged embankment 7 are constructed in the same way as the water channel 5; the wetland aquatic plants 8 are emergent plants such as shallots, yellow calamus, etc., and submerged plants such as bitter grass. After the similar terrain is constructed, planting is carried out in other unrestricted growth areas, in which emergent plants account for 40% of the total area of wetland aquatic plants 8, and submerged plants account for 60%.

The actual operation effect of the horseshoe-shaped wetland intercepted and purified by Hebang Bangtou shows that the removal rate of total nitrogen (TN) of runoff pollution reaches 56%, and the removal rate of total phosphorus (TP) reaches 47%. At the same time, the water quality of Bangtou waters is stable. In Class III water and above (GB3838-2002).

The present invention is suitable for the treatment system of the broken head river bank, uses the diversion water distribution ring canal 3 to construct the horseshoe-shaped wetland form, conforms to the topographic conditions of the broken head of the river bank, and highlights the diversity of the wetland spatial structure in the structure, thereby driving the water conservancy conditions and the The diverse habitat conditions are conducive to the improvement of functions such as self-purification of the ecosystem; the centralized water supply is improved to disperse and evenly distribute water, the water flow path is optimized, the hydraulic retention time is increased, and interception and purification measures are arranged along the process to achieve water purification; The construction of diversion and distribution canals 3, water channels 5, deep pools 6 and submerged embankments 7 increase the undulation of wetland terrain, build a better wetland base habitat, drive changes in hydraulic conditions, and achieve water purification and ecological function enhancement.

In the present invention, specific examples are used to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; There will be changes in the specific implementation manner and application scope of the idea of the invention. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. A treatment system suitable for a ceasexual river, comprising:

the preliminary purification unit comprises a concentrated runoff converging canal and a catchment purification bed, the concentrated runoff converging canal is communicated with the water flow outside the river breaker, and the catchment purification bed can purify the water flow introduced by the concentrated runoff converging canal;

the water distribution unit comprises a diversion water distribution annular channel and a dispersion water distribution pipe, the diversion water distribution annular channel is communicated with a water outlet of the water collection and purification bed, the diversion water distribution annular channel is arranged around the edge of the broken river head, the channel bottom of the diversion water distribution annular channel is lower than the river bed of the broken river head, one end of the dispersion water distribution pipe is communicated with the diversion water distribution annular channel, and the other end of the dispersion water distribution pipe is communicated with an area defined by the diversion water distribution annular channel;

core purifies and the stable unit, core purify with stable unit set up in the region that the diversion water distribution ring canal encloses, core purify with stable unit includes water course, puddle, submerged dike and aquatic plant, the water course with the puddle is linked together, the submerged dike set up in the water course with the puddle is kept away from one side of diversion water distribution ring canal, aquatic plant in on the riverbed of river creek broken ends and on the submerged dike.

2. The treatment system for a Duantou creek as claimed in claim 1, wherein: the water conservancy diversion water distribution ring canal seals for U-shaped structure and both ends, the opening orientation of the U-shaped structure that water conservancy diversion water distribution ring canal formed is kept away from concentrate the direction setting that the runoff converged into the canal.

3. The treatment system for a Duantou creek as claimed in claim 1, wherein: the catchment purification beds are arranged in the diversion and water distribution annular channel, the quantity of the catchment purification beds is two groups, and the two groups of catchment purification beds are arranged on two sides of a communication opening of the diversion and water distribution annular channel and the concentrated runoff converging channel; the bottom that catchments and purify the bed is less than at the bottom of the canal of water conservancy diversion cloth water ring canal, catchment purify the top of bed and be higher than at the bottom of the canal of water conservancy diversion cloth water ring canal, catchment purify the bed including purify the bed fixed network with set up in purify the bed matrix in the bed fixed network, it can be to getting into to purify the interception of rivers in the water conservancy diversion cloth water ring canal.

4. The treatment system for a Duantou creek as claimed in claim 1, wherein: a sedimentation promoting tank is arranged on one side of the diversion water distribution ring channel, which is close to the water channel, and is positioned at the bottom of one side of the outlet of the dispersion water distribution pipe, sedimentation promoting filler is arranged in the sedimentation promoting tank, and the top of the sedimentation promoting filler is flush with a riverbed of the river and creek break head;

the dispersion water distribution pipes and the sedimentation promotion tanks correspond to each other one by one and are all in multiple groups; one end of the outlet of the dispersion water distribution pipe is provided with a screen.

5. The treatment system for a Duantou creek as claimed in claim 1, wherein: the diversion water distribution ring canal is close to a side canal wall of the water channel comprises two groups of parallel row piles, a canal ridge foundation is filled between the two groups of row piles, the top of the canal ridge foundation is higher than a riverbed with a broken river and creek, a coping gabion net is arranged at the top of the canal ridge foundation, a coping matrix is filled in the coping gabion net, and the top of the coping gabion net is flush with the tops of the row piles.

6. The treating system for the Duantou creek as claimed in claim 1, wherein: the water course and three-dimensional net cushions have been laid in the deep pool, three-dimensional net cushions extend to and keep away from latent dyke one side on the riverbed of river disconnected end, three-dimensional net cushions utilize the staple to be fixed in on the riverbed of river disconnected end.

7. The treatment system for a Duantou creek as claimed in claim 1, wherein: the longitudinal section of the water channel is in an inverted trapezoid shape, and the bottom of the longitudinal section of the deep pool is in an arc shape; the quantity of deep pool is two sets of, and is two sets of the deep pool utilizes the water course is linked together, the water course is opening ring structure.

8. The treatment system for a Duantou creek as claimed in claim 1, wherein: the submerged dike comprises a submerged dike gabion mesh and a submerged dike matrix filled in the submerged dike gabion mesh, a planting pipe is arranged in the submerged dike matrix, the top of the planting pipe protrudes out of the submerged dike matrix, a planting matrix is filled in the planting pipe, and the aquatic plants are planted in the planting pipe.

9. The treating system for the Duantou creek as claimed in claim 8, wherein: the side wall of the planting pipe is provided with a through hole; the aquatic plants include emergent aquatic plants and submerged plants.

10. The treatment system for a Duantou creek as claimed in claim 1, wherein: the area of the water channel and the deep pool accounts for 30-40% of the area defined by the diversion and water distribution ring canal, and the planting area of the aquatic plants accounts for 40-60% of the area defined by the diversion and water distribution ring canal.

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