CN212741062U - Rural drinking water source pollution prevention and control system - Google Patents

Abstract

The application provides a rural drinking water source pollution prevention and control system, ecological field stalk and ecological interception canal are provided with a plurality ofly, and a plurality of ecological field stalks set up respectively in the both sides of a plurality of ecological interception canals, and ecological pond or ecological barrier corridor are connected respectively to different ecological interception canals, and ecological pond and ecological barrier corridor all are linked together with total water distribution canal, and the setting of the ecological wetland of compound vertical current is total water distribution canal with between the ecological revetment, for drinking water rivers between the ecological revetment. By adopting measures such as ecological interception ditch, ecological pond, ecological barrier corridor, total water distribution channel, composite vertical flow ecological wetland, ecological revetment multi-level on-way ecological purification and the like, pollutants such as organic matters, residual pesticides, nitrogen, phosphorus and the like are effectively intercepted and removed through multiple actions of physics, chemistry, microorganisms and plants, the treated rural sewage reaches the surface water environment quality standard, and the pollution prevention and control capacity of a drinking water source is improved.

Description

Rural drinking water source pollution prevention and control system

Technical Field

The application relates to the technical field of water resource protection, in particular to a rural drinking water source pollution prevention and control system.

Background

Water is a source of life, is the most active and most widely influenced factor in an ecological environment system, and is an important substance and an irreplaceable important resource for social and economic development and human progress.

With the development of economy and the improvement of living standard, the requirement of residents on the quality of life is higher and higher, but due to the economic development and the over-development of resources, the problems of rural drinking water sources and water resource exhaustion are caused, and the problems increasingly threaten the safety of drinking water, especially in vast rural areas with relatively weak infrastructure, the situation is more serious. Most drinking water sources in villages and towns do not have corresponding protection and pollution prevention and control measures, and are polluted by chemical fertilizers, pesticides, livestock and poultry breeding manure, household garbage, plastic product wastes and the like, so that the drinking water quality is deteriorated, and the drinking water safety of the villages and the towns is seriously influenced.

The pollution of rural drinking water sources is mainly nitrogen, phosphorus, organic matters and algae. In the traditional technology, environmental protection measures are mainly taken in the aspect of guaranteeing the safety of drinking water in villages and towns, such as division of a water source protection area, setting of a mark of the water source protection area and the like. The pollution prevention and control measures for drinking water sources are insufficient.

Disclosure of Invention

The application provides a rural drinking water source pollution prevention and control system to solve the problem that the rural drinking water source pollution prevention and control measures are not enough in the traditional technology.

The embodiment of the application provides a rural drinking water source pollution prevention and control system, includes: ecological field stalk, ecological interception canal, ecological pond, ecological barrier corridor, total water distribution channel, compound vertical flow ecological wetland and ecological revetment, ecological field stalk with ecological interception canal is provided with a plurality ofly, and is a plurality of ecological field stalk sets up respectively a plurality ofly the both sides of ecological interception canal, different ecological interception canal connects respectively ecological pond or ecological barrier corridor, ecological pond with ecological barrier corridor all with total water distribution channel is linked together, compound vertical flow ecological wetland sets up total water distribution channel with between the ecological revetment, be drinking water stream between the ecological revetment.

Preferably, the ecological interception ditch bottom is the rubble bed course, rubble bed course both sides are the banket, rubble bed course top is the biomembrane tectonic layer, porous grass planting brick has been laid to ecological interception ditch both sides slope, and ecological interception ditch top sets up the antiskid shoulder pad, the plant floating plants are planted to the biomembrane tectonic layer, the sloping surface below the porous grass planting brick surface of water plants emergent aquatic plants, the sloping surface above the surface of water plants grass, ecological interception ditch both sides top sets up the afforestation way, the position that ecological interception ditch is close to ecological pond or ecological barrier corridor is the irrigation canals and ditches export of ecological interception ditch, the irrigation canals and ditches export respectively communicate the import of ecological pond or ecological barrier corridor.

Preferably, the bottom of the ecological pond is tamped with plain soil, mortar-masonry stone foundations are arranged on two sides of the bottom, the pond wall of the ecological pond is an ecological slope protection, slope-growing emergent aquatic plants are planted on the ecological slope protection, an ecological road is arranged on the pond edge of the ecological pond, trees and hedges are planted on the ecological road, submerged plants are planted at the bottom of the ecological pond, an ecological floating bed and floating plants are arranged on the water surface of the ecological pond, an ecological pond water outlet pipe is arranged on the ecological pond, and the ecological pond water outlet pipe is respectively communicated with the ecological pond and the total water distribution channel.

Preferably, the ecological barrier corridor is sequentially provided with an arbor, shrub and grass buffer zone, a gentle slope hedge transition zone, an emergent aquatic plant shallow oxidation ditch, a drop aeration oxidation ditch and a corridor protection belt in a stepped manner, the gentle slope hedge transition zone adopts a shrub, grass and crop combination mode and is respectively connected with one end of the arbor, shrub and grass buffer zone and one end of the emergent aquatic plant shallow oxidation ditch, and the drop aeration oxidation ditch is respectively connected with the other end of the emergent aquatic plant shallow oxidation ditch and one end of the corridor protection belt.

Preferably, the gentle slope hedgerow transition zone and the emergent aquatic plant shallow oxidation ditch are provided with emergent aquatic plant shallow oxidation ditch front end ditch walls, the emergent aquatic plant shallow oxidation ditch front end ditch walls are provided with first water inlet pipes, the first water inlet pipes are respectively communicated with the slope hedgerow transition zone and the emergent aquatic plant shallow oxidation ditch, the bottom of the emergent aquatic plant shallow oxidation ditch is provided with a ditch bottom biomembrane structural layer, and ditch bottom emergent aquatic plants are planted on the ditch bottom biomembrane structural layer; a drop sill is arranged between the emergent aquatic plant shallow oxidation ditch and the drop aeration oxidation ditch, a drop plate is arranged at the top of the drop sill, a drop aeration oxidation ditch water outlet pipe is arranged at one end of the drop aeration oxidation ditch adjacent to the corridor protection belt, and the drop aeration oxidation ditch water outlet pipe is respectively communicated with the drop aeration oxidation ditch and the total water distribution channel; the device comprises a water drop aeration oxidation ditch, a gallery protective belt front wall is arranged between the water drop aeration oxidation ditch and the gallery protective belt, a gallery protective belt rear wall is arranged at the other end of the gallery protective belt, and plants in the gallery protective belt are planted between the gallery protective belt front wall and the gallery protective belt rear wall.

Preferably, the composite vertical flow ecological wetland comprises a preposed sedimentation tank, a descending tank, an ascending tank and an outlet channel in sequence, wherein the bottom of the descending tank and the bottom of the ascending tank are provided with a bottom public water collecting and distributing chamber, the bottom public water collecting and distributing chamber and the bottom public water collecting and distributing plate are arranged between the bottom of the descending tank and the bottom of the ascending tank, a partition wall is arranged between the descending tank and the ascending tank, the preposed sedimentation tank is respectively communicated with the main water distributing channel and the descending tank, and the outlet channel is respectively communicated with drinking water flow between the ascending tank and the ecological revetment.

Preferably, a front-end tank wall of the front-end sedimentation tank is arranged at one end of the front-end sedimentation tank, a water inlet pipe of the front-end sedimentation tank is arranged in the front-end tank wall of the front-end sedimentation tank, the water inlet pipe of the front-end sedimentation tank is communicated with a water outlet of the main water distribution channel, a rear-end tank wall of the front-end sedimentation tank is arranged at the other end of the front-end sedimentation tank, a rear-end tank wall water outlet pipe of the front-end sedimentation tank is arranged in the rear-end tank wall of the front-end sedimentation tank, and the rear-end tank wall water outlet pipe of the front-end sedimentation tank is respectively communicated with the front; the water distribution layer is internally provided with a water distribution pipe which is communicated with a water outlet pipe of the tank wall at the rear end of the preposed sedimentation tank, the top of the water distribution layer is provided with a first soil layer, and first wet plants are planted on the first soil layer; the water collecting layer is internally provided with a water collecting pipe, the top of the water collecting layer is provided with a second soil layer, second green and wet plants are planted on the second soil layer, an ascending pool rear end pool wall is arranged between the ascending pool and the water outlet channel, an ascending pool rear end pool wall water outlet pipe is arranged in the ascending pool rear end pool wall, and the ascending pool rear end pool wall water outlet pipe is communicated with the water outlet channel; the disinfection device is arranged in the water outlet channel, the end of the disinfection device is provided with a water outlet channel rear end pool wall, the water outlet channel rear end pool wall is provided with a water outlet channel rear end pool wall water outlet pipe, and the water outlet channel rear end pool wall water outlet pipe is provided with a control valve.

Preferably, the ecological revetment bottom is provided with ecological ladder gabion, ecological ladder gabion surface sets up compound soil layer, the domatic of ecological revetment is the ecological revetment of vegetation bag, set up submerged plant area and floating plant area on compound soil layer, set up emergent aquatic plant area on the ecological revetment of vegetation bag, ecological revetment top bank limit sets up the bank limit greenbelt.

Preferably, the ecological revetment is respectively arranged at two sides of the drinking water flow, and the ecological revetment at two sides is symmetrically arranged.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

by adopting measures such as ecological interception ditch, ecological pond, ecological barrier corridor, total water distribution channel, composite vertical flow ecological wetland, ecological revetment multi-level on-way ecological purification and the like, pollutants such as organic matters, residual pesticides, nitrogen, phosphorus and the like are effectively intercepted and removed through multiple actions of physics, chemistry, microorganisms and plants, the treated rural sewage reaches the surface water environment quality standard, and the pollution prevention and control capacity of a drinking water source is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a system for preventing and controlling pollution of a drinking water source in rural areas according to an embodiment of the present application;

fig. 2 is a cross-sectional view of an ecological intercepting trench according to an embodiment of the present application;

fig. 3 is a cross-sectional view of an ecological pond provided in an embodiment of the present application;

fig. 4 is a cross-sectional view of an ecological barrier corridor provided in an embodiment of the present application;

fig. 5 is a cross-sectional view of a vertical flow type ecological wetland provided in the embodiment of the present application;

fig. 6 is a cross-sectional view of an ecological bank protection according to an embodiment of the present application;

in fig. 1 to 6, the symbols are represented as:

1-ecological field peduncle, 2-ecological interception channel, 3-ecological pond, 4-ecological barrier corridor, 5-total water distribution channel, 6-composite vertical flow ecological wetland, 7-ecological bank protection and 8-drinking water flow;

21-gravel cushion layer, 22-foot protector, 23-biomembrane structural layer, 24-porous grass planting brick, 25-anti-skidding shoulder protector, 26-floating plant, 27-emergent aquatic plant, 28-grass planting, 29-green road and 210-ditch outlet;

31-plain soil compaction, 32-mortar stone foundation, 33-ecological slope protection, 34-slope emergent aquatic plants, 35-ecological road, 36-arbor and hedgerow, 37-submerged plants, 38-ecological floating bed and floating plants, and 39-ecological pond water outlet pipe;

41-arbor, shrub and grass buffer zone, 42-gentle slope hedgerow transition zone, 43-emergent aquatic plant shallow oxidation ditch, 44-drop aeration oxidation ditch and 45-corridor protection zone;

431-emergent aquatic plant shallow oxidation ditch front end ditch wall, 432-first water inlet pipe, 433-ditch bottom biomembrane structural layer and 434-ditch bottom emergent aquatic plant;

441-a water drop sill, 442-a water drop plate and 443-a water drop aeration oxidation ditch water outlet pipe;

451-corridor protection belt front wall, 452-corridor protection belt rear wall, 453-corridor protection belt inner plant;

61-a front sedimentation tank, 62-a downlink tank, 63-an uplink tank, 64-a water outlet channel, 65-a bottom public water collecting and distributing chamber, 66-a bottom public water collecting and distributing plate and 67-a partition wall;

611-front end tank wall of the front sedimentation tank, 612-front end tank inlet pipe of the sedimentation tank, 613-front end tank wall of the rear sedimentation tank, 614-front end tank wall outlet pipe of the rear sedimentation tank:

621-first-level filler of a descending tank, 622-second-level filler of the descending tank, 623-water distribution layer, 624-water distribution pipe, 625-first soil layer, 626-first plant for life:

631-ascending pool primary filler, 632-ascending pool secondary filler, 633-water collecting layer, 634-water collecting pipe, 635-second soil layer, 636-second plant, 637-ascending pool rear end pool wall, 638-ascending pool rear end pool wall water outlet pipe:

641-disinfection equipment, 642-pool wall at the back end of the water outlet channel, 643-water outlet pipe of pool wall at the back end of the water outlet channel, 644-control valve;

71-ecological ladder gabion, 72-soil covering layer, 73-plant bag ecological bank protection, 74-submerged plant zone, 75-floating plant zone, 76-emergent aquatic plant zone and 77-shore green belt.

Detailed Description

Fig. 1 is a schematic structural diagram of a system for preventing and controlling pollution of a rural drinking water source provided in an embodiment of the present application, and referring to fig. 1, the system for preventing and controlling pollution of a rural drinking water source provided in an embodiment of the present application includes: ecological field stalk 1, ecological interception canal 2, ecological pond, ecological barrier corridor, total distribution canal, compound vertical flow ecological wetland and ecological revetment, ecological field stalk 1 and ecological interception canal 2 are provided with a plurality ofly, a plurality of ecological field stalks 1 set up respectively in the both sides of a plurality of ecological interception canals 2, ecological pond or ecological barrier corridor are connected respectively to different ecological interception canals 2, ecological pond and ecological barrier corridor all are linked together with total distribution canal, compound vertical flow ecological wetland sets up between total distribution canal and ecological revetment, be drinking water rivers between the ecological revetment.

The ecological ridge is 100-150 mm higher on the basis that the existing ridge is only about 200mm high generally, and can effectively prevent surface runoff generated when rainfall is 30-50 mm, or reduce irrigation in the early stage of fertilization and fertilization of a rice field to reduce surface water turbidity, so that most of farmland surface runoff can be reduced, plants such as alfalfa, clover or soybean are planted on two sides of the ridge to form an isolation zone, and the loss of nitrogen and phosphorus nutrients can be effectively prevented and the migration of residual pesticides to a water body can be controlled when the surface runoff occurs.

Referring to fig. 2, the bottom of the ecological intercepting canal 2 is a gravel cushion 21 with a thickness of 200mm and a particle size of 32-64 mm. The two sides of the gravel cushion layer 21 are provided with the protection feet 22, and the protection feet 22 are C25 concrete blocks with the size of 300 multiplied by 300 mm. The top of the gravel cushion layer 21 is a biomembrane structural layer 23, the biomembrane structural layer 23 is made of quartz sand, the thickness is 100mm, and the particle size is 0.6-1.2 mm. Porous grass planting 28 bricks 24 are laid on two side slopes of the ecological interception channel 2, the size of each porous grass planting 28 brick 24 is 600 multiplied by 500 multiplied by 80mm, a slip-resistant shoulder protector 25 is arranged at the top of the ecological interception channel 2, and the slip-resistant shoulder protector 25 is a C25 concrete block and is 250 multiplied by 300 mm.

The biomembrane structural layer 23 is planted with floating plants 26, and the floating plants 26 are water lily. Emergent aquatic plants 27 are planted on the slope surface below the water surface of the porous grass planting 28 bricks 24, the emergent aquatic plants 27 are yellow calamus, and the planting density is 4-6 plants per square meter. Planting grass 28 on a slope surface above the water surface, wherein the grass 28 is bermuda grass and the planting density is 18-20 per square meter. Greening channels 29 are arranged at the tops of two sides of the ecological intercepting canal 2, Alsophila spinulosa is planted on the greening channels 29, and the distance is 5 m. The position of the ecological interception canal 2 close to the ecological pond or the ecological barrier corridor is a canal outlet 210 of the ecological interception canal 2, a DN300 concrete pipe is adopted, and the canal outlet 210 is respectively communicated with the inlet of the ecological pond or the ecological barrier corridor.

The ecological intercepting ditch is used for collecting farmland tail water/farmland runoff water and leakage drainage and is generally positioned between farmland fields. The floating plants 26 at the bottom of the ditch, the emergent plants 27 planted on the sloping surfaces of the ditches at two sides and the grass planting 28 planted on the water parts on the sloping surfaces of the ditches can intercept pollutants of farmland tail water/farmland runoff water and absorb nutrients such as nitrogen and phosphorus in the water, so that the aims of controlling the migration of the pollutants to the water body and recycling the nutrients such as nitrogen and phosphorus are fulfilled.

Referring to fig. 3, the bottom of the ecological pond is tamped with plain soil 31, mortar stone foundations 32 made of MU30 rubble are arranged on two sides of the bottom, M10 cement mortar is used for masonry, C20 concrete with the thickness of 100mm is used for jacking, and a 20mm flat joint is hooked by the cement mortar with the ratio of 1:3 on the surface. Ecological pond pool wall is ecological bank protection 33, plants the emergent aquatic plant 34 of slope life on ecological bank protection 33, and the domatic blanket slope protection that adopts the straight value to grow, plants the emergent aquatic plant 34 of slope life below the design water level on the bank protection, and the emergent aquatic plant 34 of slope life is the plant that the biomass is big such as qian tailed algae, arundo donax, transplants resistant plants such as sedge, sunflower above the design water level line. Ecological pond limit is provided with ecological way 35, and ecological way 35 is planted and is had arbor and hedgerow 36, and 2.5 meters wide arbor and hedgerow 36 are arranged to pond limit ecological way 35. The ecological bag with the thickness of 500mm is filled at the lower part, then trees such as cassia, willow, magnolia and the like are transplanted, and hedgerow is ornamental herbaceous plants such as clover, morning glory and the like. Submerged plants 37 are planted at the bottom of the ecological pond, and 373-7 submerged plants at the bottom of the ecological pond are hydrilla verticillata, watermifoil and the like. Ecological pond water surface is provided with ecological floating beds and floating plants 38, the specification of a single ecological floating bed is 2 x 2m, canna, water spinach and the like are planted, and filter-feeding fishes are configured underwater. The slope of the side slope of the ecological pond is 1:0.5, the depth of the designed pond is 2.5m, the ecological pond is provided with an ecological pond water outlet pipe 39, and the ecological pond water outlet pipe 39 is respectively communicated with the ecological pond and the total water distribution channel.

The function of the ecological pond is a multi-habitat oxidation pond system which takes the slope emergent aquatic plant 34 habitat area → ecological floating bed and floating plant 38 habitat area → submerged plant 37 at the bottom of the pond as the sequence. Effectively remove nitrogen, phosphorus, organic matters and the like. In addition, the rainwater storage and pretreatment functions are realized.

Referring to fig. 4, the ecological barrier corridor is sequentially provided with an arbor, shrub and grass buffer zone 41, a gentle slope hedge transition zone 42, an emergent aquatic plant shallow oxidation ditch 43, a drop aeration oxidation ditch 44 and a corridor protection belt 45 in a ladder manner, wherein the gentle slope hedge transition zone 42 adopts a shrub, grass and crop combination mode and is respectively connected with one end of the arbor, shrub and grass buffer zone 41 and one end of the emergent aquatic plant shallow oxidation ditch 43, and the drop aeration oxidation ditch 44 is respectively connected with the other end of the emergent aquatic plant shallow oxidation ditch 43 and one end of the corridor protection belt 45.

The arbor in the arbor and shrub buffer zone 41 is an osmanthus tree, the row spacing is 5m, the shrub is gardenia, the planting is carried out in double rows, the number is 10 plants/square meter, the grass is setaria japonica, the number is 100 plants/square meter, and the width of the arbor and shrub buffer zone 41 is 6-8 m.

The gentle slope angle of the gentle slope hedgerow transition zone 42 is that a 15-degree hedgerow adopts a irrigation, grass and crop combination mode, golden side boxwood is planted in shrubs, the planting density is 64 plants per square meter, citronella grass is planted in grass, the planting density is 120 plants per square meter, green beans are planted in crops, and the width of the gentle slope hedgerow transition zone 42 is 3-4 m.

The gentle slope hedgerow transition zone 42 and the emergent aquatic plant shallow oxidation ditch 43 are provided with emergent aquatic plant shallow oxidation ditch front end ditch walls 431, the emergent aquatic plant shallow oxidation ditch front end ditch walls 431 are provided with first water inlet pipes 432, and the first water inlet pipes 432 are respectively communicated with the gentle slope hedgerow transition zone and the emergent aquatic plant shallow oxidation ditch 43. The bottom of the emergent aquatic plant shallow oxidation ditch 43 is provided with a ditch bottom biological film structural layer 433, the filler of the biological film structural layer 433 is diatomite, the thickness is 120mm, and the particle size is 0.95-1.35 mm. And the ditch bottom emergent aquatic plants 434 are planted on the ditch bottom biomembrane structural layer 433, the ditch bottom emergent aquatic plants 434 are the tataronia spinosa, the planting density is 5 buds/square meter, 10-15 pieces/square meter, and the ditch bottom emergent aquatic plants 434 have the depth of a shallow oxidation ditch of 43 mm.

A drop sill 441 is arranged between the emergent plant shallow oxidation ditch 43 and the drop aeration oxidation ditch 44, a drop plate 442 is arranged at the top of the drop sill 441, a drop aeration oxidation ditch water outlet pipe 443 is arranged at one end of the drop aeration oxidation ditch 44 adjacent to the corridor protection belt 45, and the drop aeration oxidation ditch water outlet pipe 443 is respectively communicated with the drop aeration oxidation ditch 44 and the general water distribution channel; the water depth of the drop aeration oxidation ditch 44 is 1500 mm.

A gallery protection belt front wall 451 is arranged between the water drop aeration oxidation ditch 44 and the gallery protection belt 45, a gallery protection belt rear wall 452 is arranged at the other end of the gallery protection belt 45, cobblestones are laid at the bottom of the gallery protection belt 45, the thickness is 150mm, and the particle size is 4-8 mm. Plants 453 in the corridor protection belt are planted between the front wall 451 of the corridor protection belt and the rear wall 452 of the corridor protection belt, the plants 453 in the corridor protection belt are re-flowering plants, and the planting density is 10 buds/square meter and 2 square meter/square meter.

The ecological barrier corridor composed of the units is used for constructing ecological microclimates, fully utilizes nitrogen and phosphorus nutrients, reduces the loss of soil, controls agricultural non-point source pollution, plays a role of an ecological barrier, can promote the migration of the zoophyton in the intestinal tract along the corridor, and achieves the purposes of linking broken habitats, preventing population isolation and protecting biological diversity.

As can be seen from fig. 1, the total distribution canal 5 is a brick-concrete structure with a water depth of 2m and a width of 1 m. Mainly plays a role in transferring and distributing water for the subsequent composite vertical flow ecological wetland.

Referring to fig. 5, the composite vertical flow ecological wetland comprises a preposed sedimentation tank 61, a descending tank 62, an ascending tank 63 and a water outlet channel 64 in sequence, wherein bottom common water collecting and distributing chambers 65 are arranged at the bottoms of the descending tank 62 and the ascending tank 63, a bottom common water collecting and distributing plate 66 is arranged between the bottom common water collecting and distributing chambers 65 and the bottoms of the descending tank 62 and the ascending tank 63, the bottom common water distributing plate is a steel plate with the thickness of 10mm, and a circular hole with the diameter phi of 5mm is formed in the steel plate. The pitch of the round holes is 50 mm. A partition wall 67 is arranged between the descending pool 62 and the ascending pool 63, the preposed sedimentation pool 61 is respectively communicated with the general water distribution channel and the descending pool 62, and the water outlet channel 64 is respectively communicated with the drinking water flow between the ascending pool 63 and the ecological revetment.

The front-end tank wall 611 of the front-end sedimentation tank is arranged at one end of the front-end sedimentation tank 61, a water inlet pipe 612 of the front-end sedimentation tank is arranged in the front-end tank wall 611 of the front-end sedimentation tank, the water inlet pipe 612 of the front-end sedimentation tank is communicated with a water outlet of the total water distribution channel, the rear-end tank wall 613 of the front-end sedimentation tank is arranged at the other end of the front-end sedimentation tank 61, a water outlet pipe 614 of the rear-end tank wall of the front-end sedimentation tank is arranged in the tank wall 613 of the rear-end sedimentation tank, the water outlet pipe 614 of the rear-end tank wall of the front-end sedimentation tank is respectively communicated with the front-end sedimentation tank 61 and the downstream tank 62, the.

The descending tank 62 is sequentially provided with a descending tank 62 primary filler, a descending tank secondary filler 622 and a water distribution layer 63 from bottom to top, a water distribution pipe 624 is arranged in the water distribution layer 63, the water distribution pipe 624 is communicated with a tank wall water outlet pipe 614 at the rear end of the front sedimentation tank, the top of the water distribution layer 63 is provided with a first soil layer 625, and a first green wet plant 626 is planted on the first soil layer 625. The first-stage filler of the descending pool 62 is medium gravel, the particle size is 12-32 mm, and the thickness is 700 mm. The secondary filling 622 of the descending pool is shale, the particle size is 32-64 mm, and the thickness is 250 mm. The water distribution layer 63 is cobblestones, the particle size is 16-32 mm, the thickness is 300mm, the water distribution pipes 624 are non-shaped, the pipe diameters of the non-shaped water distribution pipes 624 are DN50mm, holes are formed in the bottoms of the water distribution pipes 624 at 45 degrees in an inclined staggered mode, the hole diameters are 10mm, and the hole pitch is 80 mm. The first soil layer 625 is local loam with a thickness of 300mm, the first wet-body plant is acorus calamus, the planting density is 5 plants per square meter, and 15 plants per square meter.

Ascending pond 63 has set gradually ascending pond one-level filler 631, ascending pond second grade filler 632 and water-collecting layer 633 from the bottom to the top, is provided with collector pipe 634 in the water-collecting layer 633, and the top of water-collecting layer 633 sets up second soil layer 635, plants the second plant 636 that wets on the second soil layer 635. The primary filler 631 of the upper pool is medium gravel, the particle size is 16-32 mm, and the thickness is 650 mm. The secondary filler 632 of the ascending tank is zeolite, the particle size is 32-64 mm, and the thickness is 200 mm. The water collecting layer 633 is cobblestone, handsome 16 ~ 32mm, and thickness is 300mm, and the collector pipe 634 is non-style of calligraphy, and the collector pipe 634 pipe diameter is DN75mm, at 45 degrees crisscross trompils of collector pipe 634 bottom angle to one side, and the aperture is 12mm, and the pitch-row is 60 mm. The second soil layer 635 is local loam with the thickness of 300mm, the second wet plant is acorus gramineus soland, and the planting density is 50 plants per square meter.

An ascending pool rear end pool wall 637 is arranged between the ascending pool 63 and the water outlet channel 64, an ascending pool rear end pool wall water outlet pipe 638 is arranged in the ascending pool rear end pool wall 637, and the ascending pool rear end pool wall water outlet pipe 638 is communicated with the water outlet channel 64; the disinfection equipment 641 is arranged in the water outlet channel 64, the rear end of the water outlet channel 64 is provided with a water outlet channel rear end pool wall 642, the water outlet channel rear end pool wall water outlet tube 643 is arranged on the water outlet channel rear end pool wall 642, and the water outlet channel rear end pool wall water outlet tube 643 is provided with a control valve 644.

The composite vertical flow ecological wetland comprises a unique soil-plant-microorganism ecological system consisting of soil, gravel, shale, zeolite in artificial filler and wet plants growing on the soil-plant-microorganism ecological system, can effectively intercept solid particles, nitrogen, phosphorus and other chemical pollutants from farmland tail water/farmland clean water, and then reduces the content of ammonia nitrogen compounds entering surface water and the danger caused by agricultural non-point source pollution through a series of actions such as soil adsorption, plant absorption, ecological degradation and the like.

Referring to fig. 6, an ecological stepped gabion 71 is arranged at the bottom of the ecological revetment 7, a soil covering layer 72 is arranged on the surface of the ecological stepped gabion 71, a plant growth bag ecological revetment 73 is arranged on the slope surface of the ecological revetment, a submerged plant belt 74 and a floating plant belt 75 are arranged on the soil covering layer 72, an emergent water plant belt 76 is arranged on the plant growth bag ecological revetment 73, and a bank edge green belt 77 is arranged on the bank edge at the top of the ecological revetment. Submerged plants are golden fish algae, the floating plants 26 are water lily, emergent plants are aquatic canna, the width of a shoreside green belt is 77 m, a tree + shrub + grass planting mode is adopted, trees are cassia, willow, magnolia and the like, shrubs are sabina chinensis, common privet and the like, and ornamental herbaceous plants such as clover, morning glory and the like are planted at the lower layer.

The ecological revetment sets up respectively in 8 both sides of drinking water rivers, and the ecological revetment symmetry of both sides sets up. The ecological bank protection and riverside aquatic plant community construction function is used for protecting a good living environment of organisms, creating the good living environment of the organisms, improving the self-repairing capability and strengthening the self-purifying capability of a water body system, and keeping the healthy and stable state of a drinking water source.

The process of the rural drinking water source pollution prevention and control system for water source pollution prevention and control is as follows: farmland tail water/farmland clear running water → ecological interception ditch + ecological pond → total water distribution ditch → composite vertical flow ecological wetland → ecological revetment and riverside aquatic plant community construction → drinking water source and river.

The method takes source decrement, process interception and ecological purification as a prevention and control system, adopts measures such as multistage on-way ecological purification and the like of ecological interception ditches, ecological ponds, ecological barrier galleries, total water distribution ditches, composite vertical flow ecological wetlands, ecological revetments, riverside aquatic plant community construction and the like, and effectively intercepts and removes pollutants such as organic matters, residual pesticides, nitrogen, phosphorus and the like through multiple actions of physics, chemistry, microorganisms and plants, so that the treated water reaches the standard of class III water (GB3828-2002) in the surface water environment quality standard.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The present application is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (9)

1. A rural drinking water source pollution prevention and control system is characterized by comprising: ecological field stalk (1), ecological interception canal (2), ecological pond (3), ecological barrier corridor (4), total distribution canal (5), compound vertical flow ecological wetland (6) and ecological revetment (7), ecological field stalk (1) with ecological interception canal (2) are provided with a plurality ofly, and are a plurality of ecological field stalk (1) sets up respectively in a plurality of the both sides of ecological interception canal (2), different ecological interception canal (2) are connected respectively ecological pond (3) or ecological barrier corridor (4), ecological pond (3) with ecological barrier corridor (4) all with total distribution canal (5) are linked together, compound vertical flow ecological wetland (6) set up total distribution canal (5) with between ecological revetment (7), be drinking water (8) between ecological revetment (7).

2. The rural drinking water source pollution prevention and control system according to claim 1, wherein the bottom of the ecological interception canal (2) is a gravel cushion layer (21), the two sides of the gravel cushion layer (21) are provided with foot guards (22), the top of the gravel cushion layer (21) is a biomembrane structural layer (23), the slopes of the two sides of the ecological interception canal (2) are laid with porous grass planting (28) bricks (24), the top of the ecological interception canal (2) is provided with a slip-resistant shoulder guard (25), the biomembrane structural layer (23) is planted with floating plants (26), the slope below the water surface of the porous grass planting (28) bricks (24) is planted with emergent aquatic plants (27), the slope above the water surface is planted with grass planting (28), the tops of the two sides of the ecological interception canal (2) are provided with green tunnels (29), the position of the ecological interception canal (2) close to the ecological pond (3) or the ecological barrier gallery (4) is an outlet (210) of the ecological interception canal (2), the ditch outlet (210) is respectively communicated with the inlet of the ecological pond (3) or the ecological barrier corridor (4).

3. The rural drinking water source pollution prevention and control system according to claim 1, wherein the bottom of the ecological pond (3) is compacted with plain soil (31), the two sides of the bottom are provided with masonry foundations (32), the wall of the ecological pond is an ecological slope protection (33), slope emergent aquatic plants (34) are planted on the ecological slope protection (33), an ecological road (35) is arranged at the pond side of the ecological pond (3), trees and hedgerows (36) are planted on the ecological road (35), submerged plants (37) are planted at the bottom of the ecological pond (3), an ecological floating bed and floating plants (38) are arranged on the water surface of the ecological pond (3), an ecological pond water outlet pipe (39) is arranged on the ecological pond (3), and the ecological pond water outlet pipe (39) is respectively communicated with the ecological pond (3) and the main water distribution channel (5).

4. The rural drinking water source pollution prevention and control system according to claim 1, wherein the ecological barrier corridor (4) is sequentially provided with an arbor and shrub grass buffer zone (41), a gentle slope hedge transition zone (42), an emergent aquatic plant shallow oxidation ditch (43), a drop aeration oxidation ditch (44) and a corridor protection belt (45) in a stepped manner, the gentle slope hedge transition zone (42) adopts a combination mode of shrub, grass and crop to be respectively connected with one end of the arbor and shrub grass buffer zone (41) and one end of the emergent aquatic plant shallow oxidation ditch (43), and the drop aeration oxidation ditch (44) is respectively connected with the other end of the emergent aquatic plant shallow oxidation ditch (43) and one end of the corridor protection belt (45).

5. The rural drinking water source pollution prevention and control system according to claim 4, wherein an emergent aquatic plant shallow oxidation ditch front end ditch wall (431) is arranged between the gentle slope hedge transition zone (42) and the emergent aquatic plant shallow oxidation ditch (43), the emergent aquatic plant shallow oxidation ditch front end ditch wall (431) is provided with a first water inlet pipe (432), the first water inlet pipe (432) is respectively communicated with the gentle slope hedge transition zone (42) and the emergent aquatic plant shallow oxidation ditch (43), the bottom of the emergent aquatic plant shallow oxidation ditch (43) is provided with a ditch bottom biomembrane structural layer (433), and ditch bottom emergent aquatic plants (434) are planted on the ditch bottom biomembrane structural layer (433);

a drop sill (441) is arranged between the emergent aquatic plant shallow oxidation ditch (43) and the drop aeration oxidation ditch (44), a drop plate (442) is arranged at the top of the drop sill (441), a drop aeration oxidation ditch water outlet pipe (443) is arranged at one end of the drop aeration oxidation ditch (44) adjacent to the corridor protection belt (45), and the drop aeration oxidation ditch water outlet pipe (443) is respectively communicated with the drop aeration oxidation ditch (44) and the main water distribution channel (5);

drop water aeration oxidation ditch (44) with be provided with corridor boundary guard band antetheca (451) between corridor boundary guard band (45), corridor boundary guard band (45) other end is provided with corridor boundary guard band back wall (452), corridor boundary guard band antetheca (451) with plant (453) in the corridor boundary guard band is planted between corridor boundary guard band back wall (452).

6. The rural drinking water source pollution prevention and control system according to claim 1, the composite vertical flow ecological wetland comprises a preposed sedimentation tank (61), a descending tank (62), an ascending tank (63) and a water outlet channel (64) in sequence, a bottom public water collecting and distributing chamber (65) is arranged at the bottom of the descending pool (62) and the ascending pool (63), a bottom common water collecting and distributing plate (66) is arranged between the bottom common water collecting and distributing chamber (65) and the bottoms of the descending pool (62) and the ascending pool (63), a partition wall (67) is arranged between the descending pool (62) and the ascending pool (63), the preposed sedimentation tank (61) is respectively communicated with the main water distribution channel and the descending tank (62), the water outlet channel (64) is respectively communicated with the drinking water flow between the upward pool (63) and the ecological bank protection.

7. The rural drinking water source pollution prevention and control system according to claim 6, wherein a front sedimentation tank front end tank wall (611) is arranged at one end of the front sedimentation tank, a front sedimentation tank water inlet pipe (612) is arranged in the front sedimentation tank front end tank wall (611), the front sedimentation tank water inlet pipe (612) is communicated with the water outlet of the main water distribution channel, a front sedimentation tank rear end tank wall (613) is arranged at the other end of the front sedimentation tank, a front sedimentation tank rear end tank wall water outlet pipe (614) is arranged in the front sedimentation tank rear end tank wall (613), and the front sedimentation tank rear end tank wall water outlet pipe (614) is respectively communicated with the front sedimentation tank and the descending tank;

the descending pool (62) is sequentially provided with a descending pool primary filler (621), a descending pool secondary filler (622) and a water distribution layer (623) from bottom to top, a water distribution pipe (624) is arranged in the water distribution layer (623), the water distribution pipe (624) is communicated with a pool wall water outlet pipe (614) at the rear end of the front sedimentation pool, the top of the water distribution layer (623) is provided with a first soil layer (625), and first wet plants (626) are planted on the first soil layer (625);

an ascending pool primary filler (631), an ascending pool secondary filler (632) and a water collecting layer (633) are sequentially arranged on the ascending pool (63) from bottom to top, a water collecting pipe (634) is arranged in the water collecting layer (633), a second soil layer (635) is arranged on the top of the water collecting layer (633), second green and wet plants (636) are planted on the second soil layer (635), an ascending pool rear end pool wall (637) is arranged between the ascending pool (63) and the water outlet channel (64), an ascending pool rear end pool wall water outlet pipe (638) is arranged in the ascending pool rear end pool wall (637), and the ascending pool rear end pool wall water outlet pipe (638) is communicated with the water outlet channel (64);

the disinfection equipment (641) is arranged in the water outlet channel (64), the end of the disinfection equipment is provided with a water outlet channel rear end pool wall (642), the water outlet channel rear end pool wall (642) is provided with a water outlet channel rear end pool wall water outlet pipe (643), and the water outlet channel rear end pool wall water outlet pipe (643) is provided with a control valve (644).

8. The rural drinking water source pollution prevention and control system according to claim 1, wherein an ecological step gabion (71) is arranged at the bottom of the ecological revetment (7), a soil covering layer (72) is arranged on the surface of the ecological step gabion (71), a vegetation bag ecological revetment (73) is arranged on the slope surface of the ecological revetment, a submerged plant belt (74) and a floating plant belt (75) are arranged on the soil covering layer (72), an emergent aquatic plant belt (76) is arranged on the vegetation bag ecological revetment (73), and a shore green belt (77) is arranged on the top shore of the ecological revetment (7).

9. The rural drinking water source pollution prevention and control system according to claim 8, wherein the ecological revetments (7) are respectively arranged at two sides of the drinking water flow (8), and the ecological revetments (7) at two sides are symmetrically arranged.

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