CN110241906A - Rainwater purification recycling biological gaseous-waste holdup system - Google Patents

Rainwater purification recycling biological gaseous-waste holdup system Download PDF

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Publication number
CN110241906A
CN110241906A CN201910527181.6A CN201910527181A CN110241906A CN 110241906 A CN110241906 A CN 110241906A CN 201910527181 A CN201910527181 A CN 201910527181A CN 110241906 A CN110241906 A CN 110241906A
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CN
China
Prior art keywords
layer
fountain
water
soil
rain garden
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Pending
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CN201910527181.6A
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Chinese (zh)
Inventor
贾海峰
赵云云
郭宏凯
陈正侠
刘滋菁
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Tsinghua University
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Tsinghua University
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Priority to CN201910527181.6A priority Critical patent/CN110241906A/en
Publication of CN110241906A publication Critical patent/CN110241906A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00Protecting plants
    • A01G13/02Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
    • A01G13/0256Ground coverings
    • A01G13/0262Mulches, i.e. covering material not-pre-formed in mats or sheets
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/005Cultivation methods
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G20/00Cultivation of turf, lawn or the like; Apparatus or methods therefor
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • A01G22/60Flowers; Ornamental plants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/10Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
    • A01G24/12Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/10Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
    • A01G24/12Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
    • A01G24/13Zeolites
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/10Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
    • A01G24/12Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
    • A01G24/15Calcined rock, e.g. perlite, vermiculite or clay aggregates
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • A01G24/22Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
    • A01G24/23Wood, e.g. wood chips or sawdust
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • A01G24/28Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/40Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure
    • A01G24/44Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure in block, mat or sheet form
    • A01G24/46Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure in block, mat or sheet form multi-layered
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/08Fountains
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/103Naturals or landscape retention bodies, e.g. ponds
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105Accessories, e.g. flow regulators or cleaning devices

Abstract

The invention discloses rainwater purification recycling biological gaseous-waste holdup systems.The system includes Rain Garden and fountain sight, wherein, Rain Garden successively includes vegetable layer, coating, packing layer, geotextile layer, supporting layer and drainage blanket from top to bottom, for planting in packing layer, packing layer includes soil, river sand, turfy soil, zeolite, vermiculite and waterworks excess sludge;The fountain basin of fountain sight, fountain basin are provided, in sequence from bottom to top, with sterilizing layer, reservoir bed and fountain layer, and fountain bottom of pond portion is equipped with subsider;Sterilizing layer is equipped with ultraviolet lamp tube, and sterilizing layer is connected with drainage blanket;Water in reservoir bed is supplied into fountain water pipe and is sprayed in fountain layer by the immersible pump in reservoir bed.The system can provide good environment for plant growth and effectively remove the pollutant in rainfall runoff, and fountain sight water will be used as after rainwater purification, can supplement urban landscape water and mitigate municipal drainage pressure.

Description

Rainwater purification recycling biological gaseous-waste holdup system
Technical field
The invention belongs to sponge urban construction fields, in particular to rainwater purification recycling biological gaseous-waste holdup system.
Background technique
The fast development of urbanization has been directly changed the property and morphological feature of underlying surface, so that runoff pollution adds Play carries a large amount of pollutant (suspended matter, nitrogen, phosphorus etc.) in runoff, thus caused a series of Urban Water Environment problem, The wherein water eutrophication of city river and black smelly particularly problematic.It is a kind of widely used low shadow that biology, which is detained facility, Ring development facility, can effectively from source reduction and control Runoff contaminants migration, biology be detained facility mainly utilize plant, The collective effect of filler and microorganism removes Runoff contaminants by physics, chemistry and biological respinse, to reach purified water The function of matter.Wherein, filler is the key factor to purify water, and only plant growth does not provide good environment, while being micro- The growth and breeding of biology provide the environment adapted to, and the component in filler can also directly be removed in runoff by physics chemical action Pollutant.At present it is most of biology be detained facilities be divided into coating, planting soil layer, geotextile layer, packing layer, geotextile layer, Supporting layer and drainage blanket are layered more, operation and maintenance cost height;In addition, the low water outlet for influencing development facility is by facility bottom The limitation of 1m need to be greater than apart from underground water highest dynamic water level, do not allow directly lower infiltration generally, unified heel row of collecting is needed to enter municipal administration Drainage pipeline networks.Therefore, biology is detained facility and need to be further improved.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
The present invention is completed based on following design: being on the one hand adjusted to filler composition and ratio, by planting soil layer It is combined into one with packing layer, reduces operation and operation expense that biology is detained facility;On the other hand it is set using biology delay Multiple pollutant in removal runoff is applied, and biology is detained after facility water outlet progress ultraviolet disinfection processing and is carried out as landscape water Reuse, landscape water body are the important components of modern city water environment, and the supplement of national regulation landscape water body cannot use certainly Water or underground water are detained supplement water of the facility water outlet as landscape water body using biology, the comprehensive of facility not only can be improved Benefit is closed, the difficulty of China city appearance water body water source supplement can also be alleviated, and mitigates municipal drainage pressure.
For this purpose, an object of the present invention is to provide rainwater purification recycling biological gaseous-waste holdup systems.The system not only operates Few, maintenance cost is low, and good environment can also be provided for plant growth and effectively removes the pollutant in rainfall runoff, simultaneously By the way that fountain sight water will be used as after rainwater purification, not only there is ornamental value, China's city appearance water body water can also be alleviated The difficulty and municipal drainage pressure of source supplement, have preferable social environment benefit.
According to an aspect of the present invention, the invention proposes rainwater purification recycling biological gaseous-waste holdup systems.According to the present invention Embodiment, which includes:
Rain Garden, the Rain Garden include successively from top to bottom vegetable layer, coating, packing layer, geotextile layer, hold Hold in the palm layer and drainage blanket, wherein planting forms the vegetable layer in described filler layer and above the coating, described Packing layer includes nature packet, zeolite, vermiculite and waterworks excess sludge, and the packet naturally includes soil, river sand and turfy soil, The coating includes wooden unit and bark;
Fountain sight, the fountain sight include fountain basin, and the fountain basin is provided, in sequence from bottom to top, with sterilizing layer, water storage Layer and fountain layer, wherein the fountain bottom of pond portion is equipped with subsider;The sterilizing layer is equipped with ultraviolet lamp tube, and the sterilizing layer It is connected with the drainage blanket;The reservoir bed is equipped with immersible pump, and the immersible pump supplies the water in the reservoir bed to fountain It is sprayed in water pipe and in the fountain layer, the water of ejection is back in the reservoir bed;Fountain layer top is equipped with water outlet, The water outlet is connected with municipal drain.
Rainwater purification recycling biological gaseous-waste holdup system according to the above embodiment of the present invention, on the one hand, inventors have found that originally Containing elements such as more iron, aluminium in water factory's excess sludge, there is stronger adsorption capacity to phosphorus, waterworks excess sludge is used In the packing layer of Rain Garden, plant growth not only will not influence, can also make packing layer that there is preferable and lasting dephosphorization Effect, it is not necessary that planting soil layer is separately provided in the present invention, by by soil, river sand, turfy soil, zeolite, vermiculite and waterworks Excess sludge mixing is used as packing layer, both can satisfy the growth of plant, moreover it is possible to effectively remove suspended matter, the ammonia in rainfall runoff The pollutants such as nitrogen and phosphorus, wherein rainfall runoff after Rain Garden purifies, the removal rate of suspended matter can reach 85% or more, The removal rate of phosphorus can reach 65~85%, COD up to the removal rate of 93% or more, ammonia nitrogenCr65~80% can be reduced.Another party Face, the present invention in by using ultraviolet lamp tube to Rain Garden water outlet carry out disinfection processing can make water outlet meet landscape water Water quality requirement, and then be used for fountain sight not only and the benefit of entire processing system can be improved, China city can also be alleviated The difficulty and municipal drainage pressure of city landscape water body water source supplement;And the water in fountain basin reservoir bed is formed through the effect of immersible pump Fountain is then return to reservoir bed recycling, the water in fountain basin can be made to be in dynamic circulation, guarantee water body for watching The content of middle dissolved oxygen reduces the risk that water quality deterioration causes secondary pollution.In conclusion the system not only operates few, maintenance It is at low cost, good environment can also be provided for plant growth and effectively remove the pollutant in rainfall runoff, while pass through by It is used as fountain sight water after rainwater purification, not only there is ornamental value, China city appearance water body water source supplement can also be alleviated Difficulty and municipal drainage pressure, have preferable social environment benefit.
In addition, rainwater purification recycling biological gaseous-waste holdup system according to the above embodiment of the present invention can also have following add Technical characteristic:
In some embodiments of the invention, the waterworks excess sludge is dehydration and drying sludge, the packet naturally, The mass ratio of the zeolite, the vermiculite and the dehydration dewatered sludge is (50~70): (5~20): (5~20): (10~30), The mass ratio of the soil, the river sand and the turfy soil is (40~50): (30~40): (10~20).Thus not only may be used To provide sufficient nutrient and good growing environment for plant growth, better rainwater purification effect may also reach up.
In some embodiments of the invention, the partial size of the soil is not more than 0.5mm, and the partial size of the river sand is 0.06 ~0.5mm, the partial size of the turfy soil are not more than 5mm, and the partial size of the vermiculite is 0.01~0.06mm, the partial size of the zeolite Partial size for 5~10mm, the dehydration dewatered sludge is not more than 0.5mm.Thus the mixing of each component in packing layer can not only be made More uniformly, it is also more advantageous to the release of nutrient, and each component in packing layer is come into full contact with rainwater, to be more advantageous to Plant growth simultaneously can reach better rainwater purification effect.
In some embodiments of the invention, the content of organic matter is that 3~5wt%, clay content are little in described filler layer It is not more than 80mg/Kg no more than 1000mg/Kg, phosphorus content in 5wt%, nitrogen content.Thus it can not only be provided for plant growth Sufficient nutrient it may also be ensured that packing layer is excessively aqueous be suitable for, and reaches preferable nitrogen phosphorus ligands effect.
In some embodiments of the invention, the coating with a thickness of 50~100mm, described filler layer with a thickness of 500~800mm, the supporting layer with a thickness of 200~300mm.It is possible thereby to further increase the clean-up effect of Rain Garden.
In some embodiments of the invention, the supporting layer is gravel layer, and the partial size of the gravel is 10~20mm.By This not only can achieve preferable supporting role, not have an effect on drainage effect also.
In some embodiments of the invention, the geotextile layer is nonwoven polypropylene long filament geotextile layer.It is possible thereby to Reach preferably permeable impermeable husky effect.
In some embodiments of the invention, the plant is selected from honeysuckle, short raw crape myrtle, Abelia biflora, false indigo, wolf tail Grass, blue fescue grass, alkali is fluffy, at least one of Phlox paniculata L and Ma Lian.
In some embodiments of the invention, the ultraviolet lamp tube is arranged side by side along the length direction of the sterilizing layer, phase The spacing of adjacent two ultraviolet lamp tubes is 20~30cm.It may thereby be ensured that the water energy in sterilizing layer is enough abundant by ultraviolet lamp tube Irradiation, to further increase Disinfection Effect, avoids water quality deterioration from causing secondary pollution.
In some embodiments of the invention, the volume of the fountain basin are as follows: V=Ψ hmAK, wherein V- is described in formula Fountain pool volume, m3;Ψ-is rainfall runoff coefficient;hmIt is annual flow overall control rate is 80%~85% corresponding design drop Raininess degree, mm;A- is the Rain Garden occupied area, hm2;K- is the Rain Garden service area and its occupied area Ratio, the value range of K are 10~20.Not only as much as possible Rain Garden water outlet can be sufficiently used for landscape spray as a result, Spring mitigates municipal drainage pressure, can also further decrease the maintenance operation cost of fountain basin.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of rainwater purification recycling biological gaseous-waste holdup system according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the invention proposes rainwater purification recycling biological gaseous-waste holdup systems.According to the present invention Embodiment, as shown in Figure 1, the system includes Rain Garden 100 and fountain sight 200.The system not only operate it is few, maintenance at This is low, and good environment can also be provided for plant growth and effectively removes the pollutant in rainfall runoff, while by by rain It is used as fountain sight water after Water warfare, not only there is ornamental value, China city appearance water body water source supplement can also be alleviated Difficult and municipal drainage pressure has preferable social environment benefit.
It is described in detail below with reference to rainwater purification recycling biological gaseous-waste holdup system of the Fig. 1 to the above embodiment of the present invention.
Rain Garden 100
According to an embodiment of the invention, Rain Garden 100 includes successively from top to bottom vegetable layer 110, coating 120, fills out The bed of material 130, geotextile layer 140, supporting layer 150 and drainage blanket 160, wherein planting is in packing layer 130 and in coating 120 tops form vegetable layer 110, and packing layer 130 includes nature packet, zeolite, vermiculite and waterworks excess sludge, naturally packet Soil, river sand and turfy soil are included, coating 120 includes wooden unit and bark.Inventors have found that containing in the excess sludge of waterworks The elements such as more iron, aluminium have stronger adsorption capacity to phosphorus, waterworks excess sludge are used for the packing layer of Rain Garden In, not only will not influence plant growth, can also make packing layer have preferable and lasting dephosphorization effect, the present invention in, rainwater Garden is without being separately provided planting soil layer, by mixing soil, river sand, turfy soil, zeolite, vermiculite and waterworks excess sludge Cooperation is packing layer, both can satisfy the growth of plant, moreover it is possible to it is dirty to effectively remove suspended matter, ammonia nitrogen and phosphorus in rainfall runoff etc. Contaminate object, wherein for rainfall runoff after Rain Garden purifies, the removal rate of suspended matter can reach the removal rate of 85% or more, phosphorus It can reach 65~90%, COD up to the removal rate of 93% or more, ammonia nitrogenCr65~85% can be reduced.
A specific embodiment according to the present invention, the type of plant is not particularly restricted in the present invention, this field skill Art personnel can select according to actual needs.For example, can choose from system location has removal pollutant function Plant can preferably effectively remove the plant variety of the nutritive salt such as nitrogen phosphorus, specifically, plant can for selected from honeysuckle, short raw crape myrtle, Abelia biflora, false indigo, Chinese pennisetum, blue fescue grass, alkali is fluffy, at least one of Phlox paniculata L and Ma Lian, such plant at least has It has the advantage that growth ability is strong, can largely plant growth;It is not only drought-enduring but also waterlogging with good resistance;With appropriate Growth rate and growth cycle;The fine and closely woven prosperity of root system of plant, can not only increase porosity of soil and microorganism growing space, also It can promote denitrification;Mutually coordinate with ecological environment, there is ornamental value and comprehensive utilization value;With good section Dirty, durability against pollution can quickly absorb the pollutant in water body, especially nitrogen, while also have certain resistance to soiling, with rainfall The continuous entrance of runoff has lasting durability against pollution.It preferably, can be by above-mentioned four bushes honeysuckle, short raw crape myrtle, six Wood, false indigo and five kinds of draft Chinese pennisetums, blue fescue grass, alkali is fluffy, Phlox paniculata L and Ma Lian cooperation plantation.
Another specific embodiment according to the present invention, the main function of coating 120 are that water conservation, water suction and protection are planted Object is mainly organized as wooden unit and bark, for example, can choose mass ratio be 1:(1.0~2.0) wooden unit uniformly mixed with bark It is covered on packing layer after conjunction, thus can not only make coating that there is certain water-retaining property, water imbibition and permeability, it can be with The soil erosion of packing layer is avoided, and provides nutrient for plant growth.Wherein, the thickness of coating 120 can for 50~ 100mm, for example, can for 50mm, 60mm, 70mm, 80mm, 90mm or 100mm etc., thus can not only make coating have compared with Water conservation well, soaking effect, can also avoid packing layer soil erosion and provide better growing environment for plant.According to invention A specific example, it can be 1:1 or 1 according to mass ratio by wooden unit and bark that the thickness of coating 120, which can be 100mm: 2 compositions, it is possible thereby to further increase the comprehensive function of coating, and provide more favorable environment for plant growth.
Another specific embodiment according to the present invention, no setting is required planting soil layer in the present invention, planting is being filled out In the bed of material 130, meet the requirement of pollutant in the growth and removal rainfall runoff of plant simultaneously by packing layer, wherein rainfall The removal of nitrogen mainly includes biological effect, mineralising, precipitating, filtering and the suction-operated of filler in runoff, and the removal of phosphorus is main By the suction-operated of filler, the removal of suspended matter relies primarily on filtering and precipitation, by by a variety of fillers in the present invention It is uniformly mixed, collective effect removes the pollutant in rainfall runoff.Specifically, first soil, river sand and turfy soil can be mixed It is configured to nature packet, to meet the growth of plant, then further increasing on the basis of wrapping naturally has removal ammonia nitrogen effect Zeolite and vermiculite, and the waterworks excess sludge with phosphor-removing effect, to make packing layer that there is preferable pollutant Removal effect.
Another specific embodiment according to the present invention, the mass ratio of soil, river sand and turfy soil can be in packet naturally (40~50): (30~40): (10~20), such as can be 46:36:18, inventors have found that being added in packing layer suitable River sand helps to improve the permeance property of filler, if but river sand dosage it is excessive, and be unfavorable for the growth of plant;And turfy soil Main component be natural organic substance, be a kind of sterile, nothing rich in the multiple elements such as nitrogen abundant, phosphorus, potassium, calcium, manganese Malicious, nuisanceless, pollution-free, noresidue green matter, can improve soil, restore and improve water holding, ventilation and the guarantor of soil Fertile ability, and increase the nutritional ingredient of soil, appropriate increase turfy soil is added in packing layer, can not only be mentioned for plant growth For nutrient, it is ensured that be able to satisfy plant growth nutrition content is lower even if in soil, can also improve and be gone to pollutant Removing solid capacity;By controlling soil, river sand and turfy soil as above-mentioned mass ratio in the present invention, it can not only improve soil, be plant Growth provides better soil environment, also advantageously improves packing layer to the clean effect and osmotic effect of water.Further, originally Soil selected in invention can be the planting soil in system location, such as can choose the lower plantation of nutrition content Soil can be sieved to soil, remove the biggish particle of partial size, make soil particle diameter no more than 0.5mm, in addition, in the present invention The partial size of the river sand used can be 0.06~0.5mm, and the partial size of turfy soil can be not more than 5mm, thus, it is possible to ensure soil Earth, river sand and turfy soil can be mixed with other uniform fillings.
Another specific embodiment according to the present invention, naturally packet, zeolite, vermiculite and be dehydrated the mass ratio of dewatered sludge can be with For (50~70): (5~20): (5~20): (10~30), inventors have found that containing more in the excess sludge of waterworks The elements such as iron, aluminium have stronger adsorption capacity to phosphorus, waterworks excess sludge are used in the packing layer of Rain Garden, can So that packing layer has preferable and lasting dephosphorization effect;Also, a kind of minerals of the vermiculite as Nantural non-toxic have good Cationic exchangeability and adsorptivity, can not only improve structure, the water storage soil moisture conservation of soil, improve the gas permeability of soil and aqueous Property, ammonia nitrogen, phosphate, rare earth ion and the organic pollutant in water body can also be removed;Zeolite has the function of retain water and nutrients, And its surface is positively charged, rough porous, the ability with very strong absorption ammonia nitrogen, by ion exchange, for ammonia nitrogen Removal rate can achieve 95% or more.By mixing packet naturally, zeolite, vermiculite and waterworks excess sludge in the present invention Using and control said ratio and form packing layer, sufficient nutrient and good growth ring can be not only provided for plant growth Border may also reach up better rainwater purification effect, it is ensured that rainfall runoff is after Rain Garden purifies, the removal rate of suspended matter Removal rate not less than 85%, phosphorus is not less than 68%, COD not less than the removal rate of 93%, ammonia nitrogenCr65% or more can be reduced.
Another specific embodiment according to the present invention, the waterworks excess sludge that uses is dry dirty for dehydration in the present invention The partial size that mud can be ground into the powdery that partial size is not more than 0.5mm, and control vermiculite is 0.01~0.06mm, zeolite Partial size is 5~10mm, thus not only may insure that the mixing of nature packet, zeolite, vermiculite and waterworks excess sludge is more equal It is even, it is also more advantageous to the release of nutrient, and each component in packing layer is come into full contact with rainwater, so that it is raw to be more advantageous to plant Length simultaneously can reach better rainwater purification effect.In addition, the thickness of packing layer 130 can be 500~800mm, such as can be Thus 500mm, 550mm, 600mm, 650mm, 700mm, 750mm or 800mm etc. can not only be provided more advantageous for plant growth Environment, moreover it is possible to further ensure that packing layer to the physics, chemistry and biological effect of pollutant, including mineralising, precipitating, filtering and Suction-operated etc., to reach better rainwater purification effect.
Another specific embodiment according to the present invention, the content of organic matter can contain for 3~5wt%, clay in packing layer Amount preferably no greater than 5wt%, nitrogen content is preferably no greater than 1000mg/Kg, phosphorus content is preferably no greater than 80mg/Kg, invention human hair Existing, the water passing rate of packing layer generally requires to reach 25~50mm/h, if clay content is excessive in packing layer, when rainwater infiltration, The water passing rate of packing layer can be significantly reduced, packing layer permeability is poor, influences the purification efficiency of Rain Garden;And when in packing layer Also the nitrogen P elements that a part can be discharged when nitrogen content or excessively high phosphorus content, in packing layer, influence packing layer to Water phosphorus Removal effect.It by organic matter, clay, nitrogen and phosphorus in control packing layer is respectively above-mentioned content in the present invention, it not only can be with Sufficient nutrient is provided for plant growth, it may also be ensured that packing layer is excessively aqueous be suitable for, and reaches preferable nitrogen phosphorus and goes Except effect.Another specific embodiment according to the present invention, geotextile layer 140 primarily serve isolation packing layer 130 and supporting layer 150 effect, so that avoiding under filler seepage flow from losing to supporting layer, it is poly- specifically to can choose on-woven high tenacity in the present invention Polypropylene filaments are as geotextile layer, it is possible thereby to reach preferably permeable impermeable husky effect.
Another specific embodiment according to the present invention, supporting layer 150 are mainly the function of playing support and draining, both may be used To prevent the loss of other fillers from can play the role of Quick drainage again, specifically, supporting layer can be gravel in the present invention Layer, the partial size of gravel can be 10~20mm, and the thickness of supporting layer can be 200~300mm, thus not only can achieve preferably Supporting role, do not have an effect on drainage effect also.In addition, outlet pipe can be set in 160 bottom of drainage blanket in Rain Garden, by This can be discharged to avoid Rain Garden and be directly entered underground water.
Fountain sight 200
According to an embodiment of the invention, fountain sight 200 includes fountain basin 210, fountain basin 210 is provided, in sequence from bottom to top, with Sterilizing layer 211, reservoir bed 212 and fountain layer 213, wherein fountain bottom of pond portion is equipped with subsider 220;Sterilizing layer 211 is equipped with ultraviolet Fluorescent tube 230, and sterilizing layer 211 is connected with drainage blanket 160, and fountain basin 210 and packing layer 130 is preferably made to form linker structure; Reservoir bed 212 is equipped with immersible pump 240, and immersible pump 240 supplies the water in reservoir bed 212 into fountain water pipe 250 and in fountain Layer 213 sprays, and the water of ejection is back in reservoir bed 212;213 top of fountain layer is equipped with water outlet 260, water outlet 260 and city Political affairs drainpipe is connected.Being discharged the processing that carries out disinfection to Rain Garden by using ultraviolet lamp tube in the present invention can be such that water outlet meets The water quality requirement of landscape water, and fountain sight is used in combination with Rain Garden, entire processing system not only can be improved Benefit can also alleviate the difficulty and municipal drainage pressure of China city appearance water body water source supplement;Also, fountain basin reservoir bed In water form fountain through the effect of immersible pump, for ornamental, be then return to reservoir bed recycling, can make in fountain basin Water is in dynamic circulation, guarantees the content of dissolved oxygen in water body, reduces the risk that water quality deterioration causes secondary pollution;In addition, logical It crosses and fountain basin and packing layer is formed into linker structure, Rain Garden partial filler layer can be made to be in floodage, formed Anaerobic zone provides more favorable condition to facilitate the growth and breeding of denitrifying microorganism for the nitrogen in removal rainfall runoff; And be connected in fountain layer top setting water outlet with municipal drain, it can not only make Rain Garden water outlet is as much as possible to be used for Fountain sight can also avoid leading to the phenomenon that water body is excessive in fountain basin since rainfall is excessive.
A specific embodiment according to the present invention, ultraviolet lamp tube 230 can be set side by side along the length direction of sterilizing layer 211 It sets, such as can be arranged with horizontal Tile or be arranged side by side vertically, the spacing of adjacent two ultraviolet lamp tubes can be 20~30cm.This By using above-mentioned setting in invention, it can be ensured that the water energy in sterilizing layer is enough sufficiently irradiated by ultraviolet lamp tube, thus further Disinfection Effect is improved, water quality deterioration is avoided to cause secondary pollution.It should be noted that the length of heretofore described sterilizing layer Direction is on the basis of length direction shown in FIG. 1.
Another specific embodiment according to the present invention, subsider 220 can make that may be present in Rain Garden water outlet Sand etc. further settles, and keeps water body in fountain sight limpid;In addition, 220 lower part of subsider may further include sand discharge Mouth (not shown), it is possible thereby to periodically remove the sediment in subsider by sediment ejection opening.
Another specific embodiment according to the present invention, the overall principle of 210 volume settings of fountain basin include: 1, as far as possible More collection Rain Garden water outlets, avoids rainwater after treatment from draining into municipal drainage pipe network as far as possible;2, simplify as far as possible The design of fountain basin reduces maintenance operation expense.Wherein, the volume of fountain basin can be with are as follows:
V=Ψ hmAK,
Wherein, V- is fountain pool volume, m in formula3;Ψ-is rainfall runoff coefficient;hmIt is that annual flow overall control rate is 80%~85% corresponding design rainfall intensity, mm;A- is Rain Garden occupied area, hm2;K- is Rain Garden service area With the ratio of its occupied area, the value range of K is 10~20.As much as possible Rain Garden can be not only discharged as a result, It is sufficiently used for fountain sight, mitigates municipal drainage pressure, the maintenance operation cost of fountain basin can also be further decreased.It needs Bright, in the present invention, the service area of Rain Garden includes the area of Rain Garden water catchment area and the land occupation face of Rain Garden Product, the occupied area of Rain Garden are the 5~10% of catchment area;In addition, hmCan be annual flow overall control rate be 80%, 81%, the corresponding design rainfall intensity such as 82%, 83%, 84% or 85%.
According to an embodiment of the invention, when raining, the rainfall runoff of Rain Garden periphery water catchment area by gutter or its His facility enters Rain Garden part, the pollutant carried in rainfall runoff (suspended matter, CODCr, ammonia nitrogen and total phosphorus) pass through rainwater Coating, vegetable layer, packing layer, geotextile layer, supporting layer and water-yielding stratum in garden are purified, subsequently into fountain basin Sterilizing layer carries out disinfection under the action of ultraviolet lamp tube, so that water outlet is reached the water quality requirement of landscape water, then progress into fountain Pond reservoir bed, the water in reservoir bed form fountain by the effect of immersible pump, for ornamental, eventually pass back to reservoir bed recycling.
In conclusion the rainwater purification recycling biological gaseous-waste holdup system of the above embodiment of the present invention has at least the following advantages: 1, waterworks excess sludge is used in the packing layer of Rain Garden, not only will not influence plant growth, filler can also be made Layer has preferable and lasting dephosphorization effect;2, it is not necessary that planting soil layer is separately provided, by by soil, river sand, turfy soil, boiling Stone, vermiculite and the mixing of waterworks excess sludge are used as packing layer, both can satisfy the growth of plant, moreover it is possible to effectively remove rainfall The pollutants such as suspended matter, ammonia nitrogen and phosphorus in runoff, wherein rainfall runoff is after Rain Garden purifies, the removal of suspended matter The removal rate that rate can reach 85% or more, phosphorus can reach 65~90%, COD up to the removal rate of 93% or more, ammonia nitrogenCrIt can reduce 65~85%;3, carrying out disinfection to handle to Rain Garden water outlet by using ultraviolet lamp tube can make water outlet meet landscape water Water quality requirement, and then be used for fountain sight not only and the comprehensive benefit of entire processing system can be improved, me can also be alleviated The difficulty and municipal drainage pressure of state's city appearance water body water source supplement;4, effect of the water through immersible pump in fountain basin reservoir bed Fountain is formed, for watching, reservoir bed recycling is then return to, the water in fountain basin can be made to be in dynamic circulation, guarantee The content of dissolved oxygen in water body reduces the risk that water quality deterioration causes secondary pollution;5, by forming fountain basin and packing layer Linker structure forms anaerobic zone it is also possible that the partial filler layer of Rain Garden is in floodage, to facilitate anti- The growth and breeding of nitrifying microorganisms provides more favorable condition for the nitrogen in removal rainfall runoff;6, it as much as possible can incite somebody to action Rain Garden water outlet is sufficiently used for fountain sight, mitigates municipal drainage pressure.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe Property, without limiting the invention in any way.
Embodiment 1
The packing layer of three kinds of different compositions is designed, the clean-up effect of packing layer is evaluated in simulation rain making.Wherein, Packing layer with a thickness of 600mm, packing layer is made of packet naturally, zeolite, vermiculite and waterworks excess sludge, wherein natural Packet is soil, river sand and the turfy soil that mass ratio is 46:36:18.Wherein, packet, zeolite, vermiculite and tap water naturally in packing layer Suspended matter, COD in the mass ratio of factory's dewatered sludge and rainfallCr, the concentration of ammonia nitrogen and total phosphorus and the removal rate result of each pollutant As shown in table 1.
Removal effect of the packing layer of the different compositions of table 1 to pollutant in rainfall
From table 1 it follows that being got over when waterworks excess sludge is more in packing layer to the removal rate of phosphorus in rainfall It is high.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (10)

1. a kind of rainwater purification recycling biological gaseous-waste holdup system characterized by comprising
Rain Garden, the Rain Garden successively include vegetable layer, coating, packing layer, geotextile layer, supporting layer from top to bottom And drainage blanket, wherein planting forms the vegetable layer, the filler in described filler layer and above the coating Layer includes nature packet, zeolite, vermiculite and waterworks excess sludge, and the packet naturally includes soil, river sand and turfy soil, described Coating includes wooden unit and bark;
Fountain sight, the fountain sight include fountain basin, the fountain basin be provided, in sequence from bottom to top, with sterilizing layer, reservoir bed and Fountain layer, wherein the fountain bottom of pond portion is equipped with subsider;The sterilizing layer is equipped with ultraviolet lamp tube, and the sterilizing layer and institute Drainage blanket is stated to be connected;The reservoir bed is equipped with immersible pump, and the immersible pump supplies the water in the reservoir bed to fountain water pipe In and spray in the fountain layer, the water of ejection is back in the reservoir bed;Fountain layer top is equipped with water outlet, described Water outlet is connected with municipal drain.
2. system according to claim 1, which is characterized in that the waterworks excess sludge is dehydration dewatered sludge, institute The mass ratio for stating nature packet, the zeolite, the vermiculite and the dehydration dewatered sludge is (50~70): (5~20): (5~20): (10~30), the mass ratio of the soil, the river sand and the turfy soil are (40~50): (30~40): (10~20).
3. system according to claim 1 or 2, which is characterized in that the partial size of the soil is not more than 0.5mm, the river Husky partial size is 0.06~0.5mm, and the partial size of the turfy soil is not more than 5mm, and the partial size of the vermiculite is 0.01~0.06mm, The partial size of the zeolite is 5~10mm, and the partial size of the dehydration dewatered sludge is not more than 0.5mm.
4. system according to claim 3, which is characterized in that the content of organic matter is 3~5wt%, sticks in described filler layer Native content is not more than 80mg/Kg no more than 1000mg/Kg, phosphorus content no more than 5wt%, nitrogen content.
5. system according to claim 1 or 4, which is characterized in that the coating with a thickness of 50~100mm, it is described Packing layer with a thickness of 500~800mm, the supporting layer with a thickness of 200~300mm.
6. system according to claim 5, which is characterized in that the supporting layer is gravel layer, and the partial size of the gravel is 10~20mm.
7. system according to claim 1 or 6, which is characterized in that the geotextile layer is nonwoven polypropylene long filament geotechnique Layer of cloth.
8. system according to claim 7, which is characterized in that the plant be selected from honeysuckle, short raw crape myrtle, Abelia biflora, False indigo, Chinese pennisetum, blue fescue grass, alkali is fluffy, at least one of Phlox paniculata L and Ma Lian.
9. system according to claim 1 or 8, which is characterized in that the ultraviolet lamp tube is along the length side of the sterilizing layer To being arranged side by side, the spacing of adjacent two ultraviolet lamp tubes is 20~30cm.
10. system according to claim 9, which is characterized in that the volume of the fountain basin are as follows:
V=Ψ hmAK,
Wherein, V- is the fountain pool volume, m in formula3;Ψ-is rainfall runoff coefficient;hmIt is annual flow overall control rate is 80 ~85% corresponding design rainfall intensity, mm;A- is the Rain Garden occupied area, hm2;K- is the Rain Garden service The ratio of area and its occupied area, the value range of K are 10~20.
CN201910527181.6A 2019-06-18 2019-06-18 Rainwater purification recycling biological gaseous-waste holdup system Pending CN110241906A (en)

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