36results about How to "Reduce runoff velocity" patented technology

The invention discloses a sectored multi-step ecological buffer type revetment system. The revetment system is provided with at least four levels of steps, blocking walls are sequentially arranged on the outer sides of the steps, one plant planting zone is arranged in the blocking wall of each level, soil matrix is arranged in the upper layer of each plant planting zone, yellow sand, ceramsite, soft rock and zeolite are sequentially in the lower layer of the plant planting zone of each level, and emersed landscape plants and submergence-tolerant plants are arranged in the plant planting zone of each level; hydraulic drop platforms are sequentially arranged in the corresponding positions of spaced plant planting zones of the blocking walls; and one guide plate is arranged between each blocking wall and the corresponding hydraulic drop platform; the plant planting zone of the first level is connected with a farmland drainage canal and is sectored towards the downstream to form a hydraulic-drop type hierarchical structure in an open sectored shape, the sector radius is 5-8 m, and the central angle is 45 degrees-75 degrees; and the blocking wall of the last level is connected with a river channel. The sectored multi-step ecological buffer type revetment system not only has the efficacies of protecting river channel side slope, and realizing flood water drainage and water and soil conservation, but also has good purification and landscape effects.

The invention provides a novel vegetation shallow trench and a method for processing runoff rainwater by using the novel vegetation shallow trench. The novel vegetation shallow trench comprises a vegetation layer and a shallow trench, wherein the shallow trench comprises a shallow trench bottom (1) and a slope (2), and an infiltration/drainage pipe (3) is buried in the shallow trench bottom (1). When surface runoff rainwater (9) enters the shallow trench and flows along the slope, the runoff can be purified through retention, filtering of vegetation (7), absorption and permeation, a part of runoff rainwater accumulated at the shallow trench bottom (1) enters a filter material layer surrounding the infiltration/drainage pipe (3) through infiltration effect, and the filtered runoff rainwater is drained into a receiving water body or other processing facilities through the infiltration/drainage pipe (3). Since the infiltration/drainage pipe (3) is designed at the shallow trench bottom, the novel vegetation shallow trench is remarkably improved in transmission, filtering and infiltration capabilities, has the advantages of small floor space, compact structure and strong contaminant blockage capability, and thus is applicable to a rainwater runoff pollution control system for high-density areas of a city.

The invention relates to a rain collection purification system for preventing water and soil loss caused by rain wash in mountains. According to the terrain of a mountain, a river and a slope, two or more sets of rain collection purification systems are designed from the top of the slope to the bottom of the slope; a flume in one single set of rain collection purification system is arranged in the mountain and submerge-fast plants are planted; a rainwater collecting tank is arranged at the middle part of each flume; one row of willow branch bundle row piles are piled below an effluent weir of each flume; geotextile is paved inside the piles; epicormic willow branches are bundled into living branch bundles; gravel purification filtering media are filled in the living branch bundles; the living branch bundles are arranged between the effluent weir of each flume and the willow branch bundle row piles; the living branch bundles are totally covered with soil and ecological bricks are paved so as to form a side slope plain stage; a water outlet of each rainwater collecting tank is connected with gravity sprinkling irrigation equipment by a PVC (Poly Vinyl Chloride) pipe. The rain collection purification system has the advantages that water and soil loss and water flow non-point source pollution which are caused by rain wash in the mountains can be effectively prevented; the flow rate is reduced and intercepted; most of water enters the water collecting tanks; overflowing runoff can be deep intercepted by the interaction of the living branch bundles, the gravel layers and surface microorganisms and the purification effect is obvious.

The invention discloses a method for building an ecological littoral zone in a buffer area. The method comprises building of gabions, a low pond, multiple ponds and a retention canal. The method comprises the following specific steps: (1) a gabion area is built, wherein the gabions are built between a normal water level of a river and a level of a flood occurring every two years, and emergent aquatic plants are planted in gaps between the gabions; (2) the low pond is built, wherein a low area which is 20cm lower than the gabion area and 20cm lower than foundations of the multiple ponds is built between the level of the flood occurring every two years and the level of a flood occurring every twenty years; (3) a multi-pond system is built, wherein two rows of pond systems are built in the low pond area, substrate improvement is conducted, submerged plants are closely planted in the ponds, and the emergent aquatic plants are planted on the foundations and the circumferences of the ponds; (4) the retention canal is built, wherein the retention canal is built along the outside of the level of the flood occurring every twenty years. The method effectively solves the ecological problems that a surface source of a gentle slope area of the river is severely polluted, landscapes are poor, the biodiversity is reduced and water and soil loss occurs, and offers a feasible and efficient ecological restoration measure for recovery and reconstruction of a hydro-fluctuation belt.

The invention discloses a transverse-furrow and sequential-ridge mellow soil anti-corrosion farming method of a purple soil slope farmland and particularly relates to the field of a soil erosion management technique of the purple soil slope farmland. In the method disclosed by the invention, a transverse furrow is excavated along the contour line on the purple soil slope farmland at the slope length interval which is less than the rill erosion generation critical length of the modified slope surface; the cross section of the transverse furrow is in an arc shape; the formed transverse furrow divides the whole slope farmland plot into multiple small farming units in the transverse slope direction; the two ends of the transverse furrow are connected with the original drainage furrows at the two ends of the slope farmland plot; and the integral farming terrain conditions with alternate furrows and ridges are formed by adopting a sequential-slope ridging farming mode, i.e. alternately farming and ridging in the sequential slop direction and reverse slop direction. The method disclosed by the invention can reduce the water and soil loss and prevent and control the soil erosion of the slope farmland, is beneficial to the enhancement of the water content in the soil of the farmland plot in the descending direction of the transverse furrow, improves the drought resistance of crops, maintains the agricultural productivity of the slope farmland and realizes the sustainable utilization of slope farmland water and soil resources.

The invention relates to a large storage amount water storing and draining plate suitable for roof greening. The large storage amount water storing and draining plate comprises a plastic plate face, honeycomb water storing bottles, communicating grooves, draining holes, supporting columns, non-woven geotextiles and water absorbing belts. The plate face, the water storing bottles, the communicating grooves and the supporting columns are all made of high density polyethylene (HDPE) plastic base plates after stamping. The water storing bottles are arranged on the plate face in a honeycomb mode and connected through the communicating grooves. The water storing space is large, and meanwhile uniform water distributing is achieved. The draining holes are formed in the plate face. The supporting columns are arranged below the plate face. One layer of the non-woven geotextiles is adhered on the plate face and the bottom of the each bottle correspondingly. The water absorbing belts are arranged in the position, of the communicating grooves, of the geotextiles of the plate face and stretch in the bottoms of the bottles in the position of the water storing bottles. The structure is reasonable, forming is convenient, construction is convenient, maintenance is simple, the mechanical property is good, universality is high, system adaptability is strong, and meanwhile the multiple functions of water storing, water draining, filtering, ventilating, heat insulation, noise reduction, root thorns resisting and the like are achieved; and stored rainwater can be utilized to replenish water for a matrix.

The invention discloses a method for reducing outward output of pollutants from an ionic type rare earth ore mining site. According to the method, rainwater infiltration is reduced through the measures of land leveling, water storage system building, vegetation recovery and the like, and therefore leaching of soil pollutants is reduced. In addition, a sprinkling irrigation system is built and used for vegetation irrigation, the seepage of the pollutants along with underground runoff (formed by rainwater infiltration) is reduced, and the probability that the pollutants enter the external environment along with overland runoff is reduced. In addition, the regulation and storage capacity of the water storage system is guaranteed through an irregular and non-quantitative irrigation mode to meet the water storage requirement of next rainfall.

The invention discloses a hydro-fluctuation belt ecological slope protection system for coping with hydrological changes. The hydro-fluctuation belt ecological slope protection system comprises a runoff treatment system and an ecological floating island system, wherein the runoff treatment system comprises grass planting side ditches and a water storage pit pond; the ecological floating island system comprises an ecological floating island and an ecological gabion base; the ecological floating island comprises a flexible base body and aquatic plants; and the ecological gabion base is positioned below the ecological floating island. The hydro-fluctuation belt ecological slope protection system is suitable for a hydro-fluctuation belt and composed of the runoff treatment system and the separable ecological floating island system, bank slope rainwater is purified and collected, water and soil are stabilized, meanwhile, the change of the water level of return water of the hydro-fluctuationbelt is coped with, and a growth space is provided for plants, organisms, fishes and the like; and along with the change of the water level, the ecological environment of the hydro-fluctuation belt is enriched, and the landscape effect is improved.

The invention discloses an efficient composite phosphorus removal type farmland tail water treatment system, which comprises a vegetation layer, a coarse sand layer and a reinforced phosphorus removallayer which are sequentially arranged from top to bottom. The vegetation layer comprises culture soil and vegetation; the coarse sand layer is laid at the bottom of the culture soil; the reinforced phosphorus removal layer comprises a plurality of reinforced phosphorus removal geocontainers and zeolite filled among the reinforced phosphorus removal geocontainers; the reinforced phosphorus removalgeocontainers are lumps formed by mixing sandstone, zero-valent iron, zero-valent aluminum, activated carbon powder and an additive and then performing wrapping with geotextile; wherein the weight percentages of the sandstone, the zero-valent iron, the zero-valent aluminum, the activated carbon powder and the additive are 70-80%, 4-6%, 3-6%, 7-12% and 3-8% respectively; meanwhile, the preparationmethod of the farmland tail water treatment system is improved, the sandstone, zero-valent iron, zero-valent aluminum, activated carbon powder and the additive are mixed according to a certain proportion and then the mixture is coated with geotextile to prepare the reinforced phosphorus removal geocontainers, thus effectively reducing the phosphorus content, suspended matters and other pollutantsin sewage.

The invention discloses a rainwater collection and reutilization device for a greening lawn. The rainwater collection and reutilization device comprises a box body; the end face of the box body communicates with a water storage tank, and a stone layer, an activated carbon layer, a gauze layer and an ultrafiltration membrane are sequentially mounted in the box body from top to bottom; the lower end of the water storage tank communicates with a water feeding pipe, and a one-way valve is mounted on the water feeding pipe; the lower end of the water feeding pipe communicates with a buffering box body, and one end of the buffering box body communicates with a water discharging pipe; the tail end of the water discharging pipe communicates with a piston pipe, and an L-shaped bent pipe is connected to the piston pipe, penetrates through the box body, and is provided with a pressure increasing valve; and a spray head is mounted at the end, away from the box body, of the L-shaped bent pipe. The rainwater collection and reutilization device has the advantages that the functions of seepage, filtration, storage, drainage and the like are achieved, the rainwater runoff speed is decreased, rainwater downward seepage and filtration are effectively improved, the utilization rate of rainwater is increased, circulation of natural rainfall, surface water and underground water is coordinated, environment microclimates can further be improved, the municipal drainage pressure is reduced, and the engineering construction cost is saved.

The invention provides a multi-stage purification type grass planting ditch special for green sponge and a construction method thereof. The grass planting ditch is divided into an upper water flow area and a lower infiltration area through vegetation; the infiltration area is a first filtering area which is vertically distributed; baffles and second filtering areas are further arranged in the water flow area, and the baffles are matched with the wall of the grass planting ditch to divide the grass planting ditch into a plurality of water flow channels in the width direction; the second filtering areas are arranged at the end-to-end joints of every two water flow channels; the outlet of a flow channel is disposed at an outflow area, and an overflow wall is arranged between the water flow channel closest to the road surface and the outflow area to separate the water flow channel from the outflow area; each baffle comprises a base and a partition plate, the base is buried in the infiltration area, and the partition plate is exposed to the top of the water flow area; the baffle is hollow overall, permeation holes are formed in the surface of the base and are communicated with the interior of the baffle; a water collecting pipe is further arranged in the infiltration area and located below the outflow area, and the water collecting pipe is buried in a position equivalent to or lowerthan the height of the base of the baffle.

The invention discloses a vegetation buffer strand with an optimized water flow path and a construction method. The vegetation buffer strand is applied to building of vegetation buffer strands of a slope land. The vegetation buffer strand is characterized by comprising a plurality of downward recessed ecological small filter tanks arranged on a slope land, the depth of each ecological small filtertank is 4-5cm, the distance between adjacent ecological small filter tanks is 10-20cm, the length of each ecological small filter tank is 20-30cm along a slope direction, the width of each ecologicalsmall filter tank is 20-30cm in a direction perpendicular to a slope, and herb plants are planted in the ecological small filter tanks and spaces among the ecological small filter tanks. Runoff flowvelocity is reduced, eroding of runoff flow for the surface is reduced, water and soil loss is relieved, the downward recessed ecological small filter tanks are artificially built, staying time of water flow in the buffer strand is prolonged, and the agricultural non-point source pollutant removing function of plants is enhanced.

The invention provides a method for interplanting high-quality and high-yield corn with soybean. The method comprises the steps of seed selection, seed treatment, soil preparation, sowing, soil covering, film mulching, fertilization, growth period management and harvesting. Two rows of corn and four rows of soybean are planted, the corn and the soybean are matched in height, no chemical or pesticide is applied in the whole planting process, and only a foliar fertilizer is sprayed. During seed treatment, the seeds are soaked with the same foliar fertilizer, the vigor of the seeds is increased from the beginning, and the germination rate is improved. After seedling emergence, root systems are developed, leaves are fat, stems are thick, leaves are dark green, the growth vigor is vigorous in the seedling stage, and sufficient water and fertilizer energy supply is ensured by powerful root system plants. While plants are sufficiently supplied to grow quickly, the bidirectional stress resistance of plant diseases, insects, drought, waterlogging, low temperature, high temperature, even saline-alkali soil and the like is remarkably enhanced, high yield and high quality are achieved withoutchemical fertilizers and pesticides, the yield per mu of corn is 1400 kg or above, the hundred-grain weight of the corn is 42-52 g, and the yield per mu of the soybean is 400 kg or above.