CN104529098A - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN104529098A CN104529098A CN201510032755.4A CN201510032755A CN104529098A CN 104529098 A CN104529098 A CN 104529098A CN 201510032755 A CN201510032755 A CN 201510032755A CN 104529098 A CN104529098 A CN 104529098A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Biodiversity & Conservation Biology (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a sewage treatment system which comprises a first wetland reactor, wherein the first wetland reactor comprises a first water inlet device, a first reaction pond, a first plant, a first substrate, a first partition board and a first water outlet device; small holes are formed in the first partition board, and the pond body of the first reaction pond is vertically divided into a first pond body and a second pond body; the first substrate is filled in the bottom of the first pond body; and the first water inlet device is communicated with the first pond body. Compared with the prior art, since the pond body of the first reaction pond is vertically divided into the first pond body and the second pond body, the first pond body is a root development area and the second pond body is a sewage absorption and purification area, so that the sewage treatment system disclosed by the invention can be used for separating root growth from sewage purification, avoiding the growth of biological membranes in large scale and enhancing treatment effect; and meanwhile, the sewage treatment system can be also used for preventing the roots of the plant from getting poisoned and rotten, so as to provide a durable and stable purification capacity for a wetland and to widen the application scope of the plant; and an anaerobic region is formed on the lower part of the wetland, thus creating conditions for the oxidation and decomposition of pollutants.
Description
Technical field
The invention belongs to technical field of sewage, particularly relate to a kind of Sewage treatment systems.
Background technology
Water pollution has become one of environmental problem the most serious in the world today, the heavy metal in water body by direct drinking-water, ediblely entered human body by approach such as anhydrous vegetables of irrigating and grains, threaten the health of Urban population.Water body purification technology mainly contains following several: physical cleaning method, chemical purification, biological clarification and natural purification method.Wherein biological clarification utilizes the biological ability such as oxidation, decomposition, absorption and sorption to pollutent, is conducive to the environment of biological growth by artificial creation, makes biology purifying contaminated thing in growth and breeding process.It comprises microbially decontaminate and plant purification technology.
Plant purification utilizes Accumulation of heavy metals or overweight Metal-accumulation waterplant, and by the landfill in water body out, enrichment is transported in plant materials, then cleared out from water body by heavy metal by harvesting plant.At present, it has been found that many waterplant can absorb the heavy metal ion in water preferably, water lettuce, India certain herbaceous plants with big flowers, cattail and reed have been used to dispose of sewage all.
Wetland is the major way of phytoremediation water pollution.Wetland is the transitional region between land and water system, the frequency of its surface water and surface area water and time length are very abundant, the region being adapted to slowly drained soil vegetation can be supported under normal environmental, wetland has the living species of more than 50% to be aquatic or suitable hydrophytic habitat usually, average product water depth is less than or equals 2m, must have very water or xylophyta growth.Wetland is a kind of special land resources and ecotope, in water storage for preventing flood, climate comfort, pollution degradation, protection species diversity and maintenance local area ecological balance etc., play irreplaceable effect.
Artificial swamp, for disposing of sewage and artificial design-build, is the Novel waste water technology grown up the seventies and eighties in this century.In fact artificial swamp is exactly process waste water according to the synergy of physics, chemistry, biochemical reaction in the natural wetland ecosystem, be a kind of artificial construction and supervision and control with bottom surface like bog, generally be made up of artificial substratum (being generally rubble) and growth waterplant thereon, be a unique soil-plant-microbial ecosystem, it is that settling tank, stabilization pond, artificial swamp are organically combined the new model of disposing of sewage.
Artificial swamp can be divided into surface current artificial wetland and drowned flow artificial wet land again.Drowned flow artificial wet land belongs to anaerobic type artificial swamp, mainly under bed face, flow through matrix, the effect of removing pollutent is reached by the interaction of each reaction process of Medium Culture, because take full advantage of the microbial film of filling surface growth, the effect that abundant root system of plant and veneer of soil and filler retain etc., make drowned flow artificial wet land have larger reaction interface, thus improve treatment effect and ability, the crown_interception of heavy metal is greatly improved.In addition, due to current reaction be all positioned at earth's surface under, can play insulation effect, thus the impact of drowned flow artificial wet land climate is less, and processing efficiency is little by seasonal fluctuation, colder weather condition can be adapted to, and surface current artificial wetland's sanitary condition can be avoided poor, the shortcomings such as the raw mosquitos and flies of easy evil, deposit in case at water inlet vitriol, easy generation sulfide precipitation, is conducive to the sedimentation of other most of metals.Drowned flow artificial wet land also has fine place to go effect to the various pollutents in sanitary sewage, and more anoxic zones that current wetland is formed, specific surface stream wetland is more conducive to organic degraded, is therefore more suitable for being applied to the higher waste water of process COD or the pre-treatment for artificial swamp.
But the packing layer in artificial swamp and root system of plant can adsorb, the organism retained in sewage, particulate matter etc., the pollutent retained can at wetland bed cylinder accumulation, be easy to the blocking causing packing layer, biomembranous raised growth also can affect water conservancy conductivity in addition, reduces its treatment effect; And the plant-growth of wetland is selected also to limit its application development.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of Sewage treatment systems, and this Sewage treatment systems available plant-growth scope is wider.
The invention provides a kind of Sewage treatment systems, comprise the first wetland reactor; Described first wetland reactor comprises the first water feed apparatus, the first reaction tank, the first plant, the first matrix, the first dividing plate and the first discharging device; Described first dividing plate has aperture, and the pond body of the first reaction tank is vertically divided into the first pond body and the second pond body; Described first pond body underfill has the first matrix; Described first water feed apparatus is connected with the first pond body; The sidewall of described second pond body has the first overflow weir, and described first overflow weir is connected with described first discharging device; Described first plant growing is in the first matrix.
Preferably, described first plant is rape, the bamboo palm, Rhizoma Belamcandae, Bird's Nest are fainted, closed fruit taro, umbrella bamboo, Hawaii coconut, peppermint, one or more in double-colored jasmine, Rhizome of Grass leaf Sweelflag, copper coin grass, Canna generalis Bailey, Scirpus tabernaemontani, Alocasia ordora, malva leaf and vine.
Preferably, the height of described first reaction tank is 40 ~ 60cm.
Preferably, the aspect ratio of described first pond body and the second pond body is (0.5 ~ 0.7): (0.5 ~ 0.3).
Preferably, the second wetland reactor with the first wetland reactors in series is also comprised; Described second wetland reactor comprises the second water feed apparatus, the second reaction tank, the second plant, the second matrix, second partition and the second discharging device; Described second partition has aperture, and the pond body of the second reaction tank is vertically divided into the 3rd pond body and the 4th pond body; Described second pond body underfill has the second matrix; Described second water feed apparatus is connected with the 3rd pond body; The sidewall of described 4th pond body has the second overflow weir, and described second overflow weir is connected with described second discharging device; Described second plant growing is in the second matrix; Described first discharging device is connected with the second water feed apparatus.
Preferably, described second plant is flame nettle, Caulis Miscanthis floriduli, Rush, reed, giantreed, reed, wild rice stem, calamus, cattail, ivy, schefflera, Bougainvillea spectabilis, Alocasia ordora, wild pansy, kale, Spotted Dumbcane, pocket coconut, Yemen's iron, leaf of Flos Carthami taro, again power flower, spill golden coral, one or more in Spiked Loosestrife, Canna generalis, lotus, cattail, rhizoma alismatis, Common Snapdragon, fishscale bamboo, water pepper, hornwort, paddy rice, water caltrop, lotus rhizome, water chestnut, arrowhead and Gorgon fruit.
Preferably, the 3rd wetland reactor with the second wetland reactors in series is also comprised; Described 3rd wetland reactor comprises the 3rd water feed apparatus, the 3rd reaction tank, the 3rd plant, the 3rd matrix, the 3rd dividing plate and the 3rd discharging device; Described 3rd dividing plate has aperture, and the pond body of the 3rd reaction tank is vertically divided into the 5th pond body and the 6th pond body; Described 5th pond body underfill has the 3rd matrix; Described 3rd water feed apparatus is connected with the 5th pond body; The sidewall of described 6th pond body has the 3rd overflow weir, and described 3rd overflow weir is connected with described 3rd discharging device; Described 3rd plant growing is in the 3rd matrix; Described second discharging device is connected with the 3rd water feed apparatus.
Preferably, described first matrix, the second matrix and the 3rd matrix are selected from one or more in cobble, sand, perlite, slag, fine sand, cinder, soil and bacterium slag independently of one another.
Preferably, physical cleaning district and chemical purification district is also comprised; The water outlet in described physical cleaning district is connected with the water-in in chemical purification district; Described chemical purification district water outlet be connected with the first water feed apparatus of the first wetland reactor.
Preferably, described physical cleaning district comprise be connected successively the first layer physical cleaning district, second layer physical cleaning district, third layer physical cleaning district and the 4th floor physical cleaning district; Described the first layer physical cleaning district comprises the one-level fence and cobble filtering system that are connected; Described second layer physical cleaning district comprises the secondary fence be connected with cobble filtering system and the gravel filtering system be connected with secondary fence; Described third layer physical cleaning district comprises the three grades of fence be connected with gravel filtering system and the coarse sand filtering system be connected with three grades of fence; Described 4th floor physical cleaning district comprises the level Four fence be connected with coarse sand filtering system and the fine sand filtering system be connected with level Four fence.
The invention provides a kind of Sewage treatment systems, comprise the first wetland reactor; Described first wetland reactor comprises the first water feed apparatus, the first reaction tank, the first plant, the first matrix, the first dividing plate and the first discharging device; Described first dividing plate has aperture, and the pond body of the first reaction tank is vertically divided into the first pond body and the second pond body; Described first pond body underfill has the first matrix; Described first water feed apparatus is connected with the first pond body; The sidewall of described second pond body has the first overflow weir, and described first overflow weir is connected with described first discharging device; Described first plant growing is in the first matrix.Compared with prior art, the pond body of wetland reactor of the present invention is vertically divided into the first pond body and the second pond body, first pond body is root system development district, second pond body is sewage absorption cleaning district, thus root growth and sewage purification are separated, and avoids biomembranous raised growth, enhance treatment effect, also root system of plant can be prevented simultaneously poisoning rotten, thus can be the detergent power that wetland provides lasting stability, expand the scope of application of plant; Further, the interval of anaerobism is formed at wetland bottom, for the oxygenolysis polluted creates condition.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the schematic diagram of Sewage treatment systems of the present invention;
Fig. 2 is the side schematic view of Sewage treatment systems of the present invention;
Fig. 3 is the schematic top plan view of Sewage treatment systems of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of Sewage treatment systems, comprise the first wetland reactor; Described first wetland reactor comprises the first water feed apparatus, the first reaction tank, the first plant, the first matrix, the first dividing plate and the first discharging device; Described first dividing plate has aperture, and the pond body of the first reaction tank is vertically divided into the first pond body and the second pond body; Described first pond body underfill has the first matrix; Described first water feed apparatus is connected with the first pond body; The sidewall of described second pond body has the first overflow weir, and described first overflow weir is connected with described first discharging device; Described first plant growing is in the first matrix.
The present invention first wetland reactor comprises the first water feed apparatus, the first reaction tank, the first plant, the first matrix, the first dividing plate and the first discharging device; Wherein said first water feed apparatus and the first discharging device belong to the collection water distribution system of wetland reactor, and object is the homogeneity ensureing water distribution, catchment, and perforated pipe, mode such as collection water distributing pipe, Ji Peishuiyan etc. therefore should be adopted to realize the homogeneity of water distribution.The present invention preferably adopts perforated tube or V-notch weir, and the flooding quantity of system regulates by valve or flashboard; Discharging device is provided with turning gland and by-pass valve control, thus provides water lev el control for whole wetland reactor.In severe cold area, water feed apparatus and arranging of discharging device need consider frost protection, and arrange control valve and blow-off valve at the necessary position of system.The peak flow of wetland reactor first water feed apparatus of the present invention is that feed-water end can not occur choking water and surface stream.
The height of described first reaction tank is preferably 40 ~ 60cm, and root system of plant too deeply can be caused to cure by oxygen therapy bottom, also easily causes slough simultaneously; The length of described first reaction tank is preferably 20 ~ 50m, and the long meeting of length makes wetland bed middle formation dead band, and water level is also difficult to regulate, and is also unfavorable for cultivation of plants simultaneously; The long-width ratio of described first reaction tank is preferably (2 ~ 20): 1, is more preferably (5 ~ 10): 1.
The present invention first wetland reactor comprises the first dividing plate, and the material of described first dividing plate not special restriction.First dividing plate has aperture, and the pond body of the first reaction tank is vertically divided into the first pond body and the second pond body.On described first dividing plate, the aperture of aperture is preferably 5 ~ 10mm, is more preferably 6 ~ 9mm, most preferably is 8mm.The aspect ratio of described first pond body and the second pond body is preferably (0.5 ~ 0.7): (0.5 ~ 0.3), is more preferably (0.6 ~ 0.65): (0.4 ~ 0.35), most preferably is 0.618:0.382.
The underfill of the first pond body has the first matrix, described first matrix is the matrix having water-permeable and can be used for planting plants well known to those skilled in the art, can be soil, implement, plastics, slag, pottery, gac, natural rock and mineral material etc., often kind of a substrate performance has relative merits, price variance is also larger, should select according to the water quality situation of concrete raw waste water and economic analysis conclusion, to give full play to the effect of matrix, if matrix successfully can retain pollutent, then create favourable condition for the removal of follow-up plant to pollutent.As the important guarantee of effluent quality, the present invention preferably adopts one or more in cobble, sand, perlite, slag, fine sand, cinder, soil and bacterium slag as the first matrix, is more preferably one or more in fine sand, perlite and cinder; Its adsorbable heavy metal and various ion, and the basis that is widely used, can also increase surface-area simultaneously, be conducive to the carrying out of microbial reaction; The thickness of described first matrix is preferably 25 ~ 40cm, is more preferably 30 ~ 40cm.
The present invention first plant growing is in the first matrix, and the planting density of described first plant is preferably 20 ~ 50 strains/m
2, be more preferably 30 ~ 40 strains/m
2.Described first plant is high resistant plant, preferably rape, the bamboo palm, Rhizoma Belamcandae, Bird's Nest are fainted, are closed fruit taro, umbrella bamboo, Hawaii coconut, peppermint, one or more in double-colored jasmine, Rhizome of Grass leaf Sweelflag, copper coin grass, Canna generalis Bailey, Scirpus tabernaemontani, Alocasia ordora, malva leaf and vine; Described first matrix optimization is one or more in fine sand, perlite and cinder.First plant plays a very important role in wetland reactor, and himself can absorb a part of nutritive substance, and simultaneously root district is that the existence of microorganism and degraded nutritive substance provide necessary place and condition.
Sewage enters the first wetland reactor by the first water feed apparatus, and the aperture on the first matrix, the first dividing plate flows into the second pond body.The sidewall of the second pond body has the first overflow weir, and described first overflow weir is connected with the first discharging device.The position of described first overflow weir is preferably identical with the position of the first dividing plate.
Wetland reactor of the present invention is vertical subsurface flow wetland, and it has between more oxygen-starved area, is conducive to organic degraded; The pond body of wetland reactor is vertically divided into the first pond body and the second pond body simultaneously, first pond body is root system development district, second pond body is sewage absorption cleaning district, thus root growth and sewage purification are separated, avoid biomembranous raised growth, enhance treatment effect, root system of plant also can be prevented simultaneously poisoning rotten, thus can be the detergent power that wetland provides lasting stability, expand the scope of application of plant; Further, the interval of anaerobism is formed at wetland bottom, for the oxygenolysis polluted creates condition.
In order to better sewage be carried out stage treatment, wetland reactor of the present invention preferably also comprises the second wetland reactor with the first wetland reactors in series; Described second wetland reactor comprises the second water feed apparatus, the second reaction tank, the second plant, the second matrix, second partition and the second discharging device; Described second partition has aperture, and the pond body of the second reaction tank is vertically divided into the 3rd pond body and the 4th pond body; Described 3rd pond body underfill has the second matrix; Described second water feed apparatus is connected with the 3rd pond body; The sidewall of described 4th pond body has the second overflow weir, and described second overflow weir is connected with described second discharging device; Described second plant growing is in the second matrix; Described first discharging device is connected with the second water feed apparatus.
Described second water feed apparatus, the second reaction tank, second partition and the second discharging device, with described in the first water feed apparatus, the first reaction tank, the first dividing plate and the first discharging device, do not repeat them here.
Described second matrix optimization is one or more in cobble, sand, perlite, slag, fine sand, cinder, soil and bacterium slag, is more preferably one or more in fine sand, perlite and bacterium slag.
Described second plant is medium resistant plant, it is preferably cultivated plant or floriculture, be more preferably flame nettle, Caulis Miscanthis floriduli, Rush, reed, giantreed, reed, wild rice stem, calamus, cattail, ivy, schefflera, Bougainvillea spectabilis, Alocasia ordora, wild pansy, kale, Spotted Dumbcane, pocket coconut, Yemen's iron, leaf of Flos Carthami taro, again power flower, spill golden coral, one or more in Spiked Loosestrife, Canna generalis, lotus, cattail, rhizoma alismatis, Common Snapdragon, fishscale bamboo, water pepper, hornwort, paddy rice, water caltrop, lotus rhizome, water chestnut, arrowhead and Gorgon fruit.
According to the present invention, this Sewage treatment systems preferably also comprises the 3rd wetland reactor with the second wetland reactors in series; Described 3rd wetland reactor comprises the 3rd water feed apparatus, the 3rd reaction tank, the 3rd plant, the 3rd matrix, the 3rd dividing plate and the 3rd discharging device; Described 3rd dividing plate has aperture, and the pond body of the 3rd reaction tank is vertically divided into the 5th pond body and the 6th pond body; Described 5th pond body underfill has the 3rd matrix; Described 3rd water feed apparatus is connected with the 5th pond body; The sidewall of described 6th pond body has the 3rd overflow weir, and described 3rd overflow weir is connected with described 3rd discharging device; Described 3rd plant growing is in the 3rd matrix; Described second discharging device is connected with the 3rd water feed apparatus.
Wherein, the 3rd water feed apparatus, the 3rd reaction tank, the 3rd dividing plate and the 3rd discharging device, with described in the first water feed apparatus, the first reaction tank, the first dividing plate and the first discharging device, do not repeat them here.
Described second matrix optimization is one or more in cobble, sand, perlite, slag, fine sand, cinder, soil and bacterium slag, is more preferably one or more in fine sand, perlite and soil.
Described 3rd plant is low resistant plant; be preferably Woody flower plant and wild plant, be more preferably one or more in red fetters wood, glossy privet, cuckoo, golden mandarin orange, cherry, ginkgo, fragrant camphor tree, metasequoia, oriental cherry, bald cypress, Chi Shan, Chinese catalpa, Chinese pistache, Chinese tallow tree, China tree, Chinese photinia, Chinese ash, banyan, weeping willow, Sabina vulgaris, winter jasmine, China pink, bracketplant, violet, iris, golden-rimmed folium ilicis chinensis and purslane.
The present invention is divided into three layers of wetland reactor, comprehensively be made up of three grades of plant ecological absorptions, balanced water distribution, biological diafiltration, biological, anaerobic nitrification, Water-collecting filterings of different durability against pollution, it is a kind of biological treatment of continuous operation, reaction zone collection anaerobic nitrification, biological are filtered into one, its reaction pattern is pulling flow type in time, it is spatially graded hybrid, anti impulsion load ability is strong, effective, take full advantage of bio-chemical reaction mechanism absorption and metabolism are completed in same functional zone, possess the advantage of absorption and sorption enhanced simultaneously.
Sewage treatment systems of the present invention is drawn and has been led to the last one kilometer that all plant comprehensive decontamination beautify ecotope, it can allow artificial swamp not by the restriction of waterplant, cultivate all plants that can plant, particularly can by purification of water quality to the xylophyta of unusual pure state and wild plant; Meanwhile, it also can realize the negative and positive collocation of each kind of plant, high level matches with low level, collocation of colour, and wetland plant kind can be allowed more rich and varied.
In order to remove some insoluble impurity and the organism in sewage better, Sewage treatment systems of the present invention preferably also comprises physical cleaning district and chemical purification district; The water outlet in described physical cleaning district is connected with the water-in in chemical purification district; Described chemical purification district water outlet be connected with the first water feed apparatus of the first wetland reactor.
Described physical cleaning district is the method that employing physics mode well known to those skilled in the art is purified waste water, and there is no special restriction.The degree of depth in described physical cleaning district is preferably 100 ~ 300cm, is more preferably 150 ~ 250cm, most preferably is 200cm; The length in described physical cleaning district is preferably 20 ~ 50m, is more preferably 30 ~ 40m; The long-width ratio in described physical cleaning district is preferably (2 ~ 20): 1, is more preferably (5 ~ 15): 1.The present invention preferably comprise be connected successively the first layer physical cleaning district, second layer physical cleaning district, third layer physical cleaning district and the 4th floor physical cleaning district; Described the first layer physical cleaning district comprises the one-level fence and cobble filtering system that are connected; Described second layer physical cleaning district comprises the secondary fence be connected with cobble filtering system and the gravel filtering system be connected with secondary fence; Described third layer physical cleaning district comprises the three grades of fence be connected with gravel filtering system and the coarse sand filtering system be connected with three grades of fence; Described 4th floor physical cleaning district comprises the level Four fence be connected with coarse sand filtering system and the fine sand filtering system be connected with level Four fence
The aperture of described one-level fence is preferably 60 ~ 160mm, is more preferably 60 ~ 150mm.The discharging device of one-level fence is connected with the water feed apparatus of cobble filtering system, and in described cobble filtering system, the particle diameter of cobble is preferably 60 ~ 160mm, is more preferably 60 ~ 150mm.
The discharging device of cobble filtering system is connected with the water feed apparatus of secondary fence, and the aperture of described secondary fence is preferably 10 ~ 60mm; The discharging device of secondary fence is connected with the water feed apparatus of gravel filtering system, and the particle diameter of described gravel filtering system cobble-stone is preferably 10 ~ 60mm.
The discharging device of described gravel filtering system is connected with the water feed apparatus of three grades of fence, and the aperture of described three grades of fence is preferably 5 ~ 10mm; The discharging device of three grades of fence is connected with the water feed apparatus of coarse sand filtering system, and the particle diameter of described coarse sand filtering system medium coarse sand is preferably 5 ~ 10mm.
The discharging device of coarse sand filtering system is connected with the water feed apparatus of level Four fence, and the aperture of described level Four fence is preferably 1 ~ 5mm; The discharging device of level Four fence is connected with the water feed apparatus of fine sand filtering system, and in described fine sand filtering system, the particle diameter of fine sand is preferably 1 ~ 5mm.
Fence mainly retains larger suspended substance or floating matter, to prevent blocking, and alleviates the processing load of subsequent disposal structures.Physical cleaning district adopts the filter purification method step by step of series connection classification can remove impurity fast, clarifies water body rapidly.
Described chemical purification district is chemical purification water well known to those skilled in the art, there is no special restriction, and in the present invention, chemical purification district preferably includes limestone vegetation, precipitation agent precipitation metal and oxidation and aeration.In stone and can the pH value of quick adjustment sewage, make most of heavy metal become water insoluble, under the effect of precipitation agent, form precipitation; Oxidation and aeration has and prevents sewage corrosion anaerobism, contamination precipitation and deodorization functions.In the present invention, oxidation and aeration is except can adopting aerator, also can carry out together with the construction of plants on water surface chinampa, in the hover based on flame nettle, arrange shower nozzle, and one side spraying, one side achieves water body oxidation and aeration.
Chemical purification district can regulate, balanced water quality, the water yield, the peak flow of waste water, concentration and temperature variation is avoided to cause impact to follow-up facility, ensure that microorganism normally breeds and maintains higher biological activity, thus ensure the normal operation of Sewage treatment systems.
In order to control the flow of sewage, Sewage treatment systems of the present invention preferably also comprises sewage collecting pool, and the discharging device of described sewage collecting pool is connected with the water feed apparatus in physical cleaning district.
Sewage treatment systems provided by the invention adopts plural serial stage, not only increases the hydraulic detention time of system, enhancement process effect, the stability that simultaneously also can effectively keep whole artificial wet land system to run.
Fig. 1 is the schematic diagram of Non-aqueous processing system of the present invention, and wherein A is sewage collecting pool, B is one-level fence, C is cobble filtering system, D is secondary fence, E is gravel filtering system, F is three grades of fence, G is coarse sand filtering system, H is level Four fence, I is fine sand filtering system, J is chemical purification district, K is the first wetland reactor, L is the second wetland reactor, M is the 3rd wetland reactor.
Fig. 2 is the side schematic view of Non-aqueous processing system of the present invention; Fig. 3 is the schematic top plan view of Non-aqueous processing system of the present invention.
In order to further illustrate the present invention, below in conjunction with embodiment, a kind of Sewage treatment systems provided by the invention is described in detail.
Reagent used in following examples is commercially available.
Embodiment 1
1.1 provide the Sewage treatment systems shown in Fig. 1, and wherein the aperture of one-level fence is 100mm, and the aperture of secondary fence is 50mm, and the aperture of three grades of fence is 10mm, and the aperture of level Four fence is 5mm; The precipitation agent in chemical purification district is macromolecule water absorbent material, and oxidation and aeration is the hover based on flame nettle; First pond body of the first wetland reactor, the second wetland reactor and the 3rd wetland reactor and the aspect ratio of the second pond body are 0.618:0.382, the size of the first dividing plate, second partition and the 3rd partition board hole is 8mm, and the first overflow weir, the second overflow weir are all opened on the pool wall connected with dividing plate with the 3rd overflow weir; The matrix of the first wetland reactor is fine sand, perlite and cinder, and thickness is 30cm, and the first plant is umbrella bamboo and Canna generalis Bailey; The matrix of the second wetland reactor is fine sand, perlite and bacterium slag, and thickness is 30cm, and the second plant is lotus and calamus; The matrix of the 3rd wetland reactor is fine sand, perlite and soil, and thickness is 30cm, and the 3rd plant is golden-rimmed folium ilicis chinensis; The planting density of plant is 40 strains/m
2.
Initial EC concentration is 1.54ms/cm for 2.54ms/cm simulates the concentration of testing EC in sewage after organic sewage flows through the physical cleaning district of the Sewage treatment systems that 1.1 provide and chemical purification district by 1.2, again by the first wetland reactor of 1.1 Sewage treatment systemss provided, the second wetland reactor and the 3rd wetland reactor, in final test water, the concentration of EC is 0.11ms/cm.
Embodiment 2
2.1 provide the Sewage treatment systems shown in Fig. 1, and wherein the aperture of one-level fence is 100mm, and the aperture of secondary fence is 50mm, and the aperture of three grades of fence is 10mm, and the aperture of level Four fence is 5mm; The precipitation agent in chemical purification district is macromolecule water absorbent material, and oxidation and aeration is the hover based on flame nettle; First pond body of the first wetland reactor, the second wetland reactor and the 3rd wetland reactor and the aspect ratio of the second pond body are 0.618:0.382, the size of the first dividing plate, second partition and the 3rd partition board hole is 8mm, and the first overflow weir, the second overflow weir are all opened on the pool wall connected with dividing plate with the 3rd overflow weir; The matrix of the first wetland reactor is fine sand, perlite and cinder, and thickness is 25cm, and the first plant is copper coin grass, Canna generalis Bailey and Alocasia ordora; The matrix of the second wetland reactor is fine sand, perlite and bacterium slag, and thickness is 30cm, and the second plant is reed and wild pansy; The matrix of the 3rd wetland reactor is fine sand, perlite and soil, and thickness is 30cm, and the 3rd plant is red fetters wood, glossy privet and cuckoo; The planting density of plant is 40 strains/m
2.
Initial EC concentration is 1.54ms/cm for 2.54ms/cm simulates the concentration of testing EC in sewage after organic sewage flows through the physical cleaning district of the Sewage treatment systems that 2.1 provide and chemical purification district by 2.2, again by the first wetland reactor of 2.1 Sewage treatment systemss provided, the second wetland reactor and the 3rd wetland reactor, in final test water, the concentration of EC is 0.12ms/cm.
Embodiment 3
3.1 provide the Sewage treatment systems shown in Fig. 1, and wherein the aperture of one-level fence is 100mm, and the aperture of secondary fence is 50mm, and the aperture of three grades of fence is 10mm, and the aperture of level Four fence is 5mm; The precipitation agent in chemical purification district is macromolecule water absorbent material, and oxidation and aeration is the hover based on flame nettle; First pond body of the first wetland reactor, the second wetland reactor and the 3rd wetland reactor and the aspect ratio of the second pond body are 0.618:0.382, the size of the first dividing plate, second partition and the 3rd partition board hole is 8mm, and the first overflow weir, the second overflow weir are all opened on the pool wall connected with dividing plate with the 3rd overflow weir; The matrix of the first wetland reactor is fine sand, perlite and cinder, and thickness is 25cm, and the first plant is umbrella bamboo and Canna generalis Bailey; The matrix of the second wetland reactor is fine sand, perlite and bacterium slag, and thickness is 30cm, and the second plant is lotus and calamus; The matrix of the 3rd wetland reactor is fine sand, perlite and soil, and thickness is 30cm, and the 3rd plant is weeping willow, iris and China pink; The planting density of plant is 40 strains/m
2.
Initial EC concentration is 1.54ms/cm for 2.54ms/cm simulates the concentration of testing EC in sewage after organic sewage flows through the physical cleaning district of the Sewage treatment systems that 3.1 provide and chemical purification district by 3.2, again by the first wetland reactor of 3.1 Sewage treatment systemss provided, the second wetland reactor and the 3rd wetland reactor, in final test water, the concentration of EC is 0.105ms/cm.
Claims (10)
1. a Sewage treatment systems, is characterized in that, comprises the first wetland reactor; Described first wetland reactor comprises the first water feed apparatus, the first reaction tank, the first plant, the first matrix, the first dividing plate and the first discharging device; Described first dividing plate has aperture, and the pond body of the first reaction tank is vertically divided into the first pond body and the second pond body; Described first pond body underfill has the first matrix; Described first water feed apparatus is connected with the first pond body; The sidewall of described second pond body has the first overflow weir, and described first overflow weir is connected with described first discharging device; Described first plant growing is in the first matrix.
2. Sewage treatment systems according to claim 1, it is characterized in that, described first plant is rape, the bamboo palm, Rhizoma Belamcandae, Bird's Nest are fainted, closed fruit taro, umbrella bamboo, Hawaii coconut, peppermint, one or more in double-colored jasmine, Rhizome of Grass leaf Sweelflag, copper coin grass, Canna generalis Bailey, Scirpus tabernaemontani, Alocasia ordora, malva leaf and vine.
3. Sewage treatment systems according to claim 1, is characterized in that, the height of described first reaction tank is 40 ~ 60cm.
4. Sewage treatment systems according to claim 3, is characterized in that, the aspect ratio of described first pond body and the second pond body is (0.5 ~ 0.7): (0.5 ~ 0.3).
5. Sewage treatment systems according to claim 1, is characterized in that, also comprises the second wetland reactor with the first wetland reactors in series; Described second wetland reactor comprises the second water feed apparatus, the second reaction tank, the second plant, the second matrix, second partition and the second discharging device; Described second partition has aperture, and the pond body of the second reaction tank is vertically divided into the 3rd pond body and the 4th pond body; Described 3rd pond body underfill has the second matrix; Described second water feed apparatus is connected with the 3rd pond body; The sidewall of described 4th pond body has the second overflow weir, and described second overflow weir is connected with described second discharging device; Described second plant growing is in the second matrix; Described first discharging device is connected with the second water feed apparatus.
6. Sewage treatment systems according to claim 5, it is characterized in that, described second plant is flame nettle, Caulis Miscanthis floriduli, Rush, reed, giantreed, reed, wild rice stem, calamus, cattail, ivy, schefflera, Bougainvillea spectabilis, Alocasia ordora, wild pansy, kale, Spotted Dumbcane, pocket coconut, Yemen's iron, leaf of Flos Carthami taro, again power flower, spill golden coral, one or more in Spiked Loosestrife, Canna generalis, lotus, cattail, rhizoma alismatis, Common Snapdragon, fishscale bamboo, water pepper, hornwort, paddy rice, water caltrop, lotus rhizome, water chestnut, arrowhead and Gorgon fruit.
7. Sewage treatment systems according to claim 5, is characterized in that, also comprises the 3rd wetland reactor with the second wetland reactors in series; Described 3rd wetland reactor comprises the 3rd water feed apparatus, the 3rd reaction tank, the 3rd plant, the 3rd matrix, the 3rd dividing plate and the 3rd discharging device; Described 3rd dividing plate has aperture, and the pond body of the 3rd reaction tank is vertically divided into the 5th pond body and the 6th pond body; Described 5th pond body underfill has the 3rd matrix; Described 3rd water feed apparatus is connected with the 5th pond body; The sidewall of described 6th pond body has the 3rd overflow weir, and described 3rd overflow weir is connected with described 3rd discharging device; Described 3rd plant growing is in the 3rd matrix; Described second discharging device is connected with the 3rd water feed apparatus.
8. Sewage treatment systems according to claim 7, is characterized in that, described first matrix, the second matrix and the 3rd matrix be selected from cobble, sand, perlite, slag, fine sand, cinder, soil and bacterium slag independently of one another one or more.
9. Sewage treatment systems according to claim 1, is characterized in that, also comprises physical cleaning district and chemical purification district; The water outlet in described physical cleaning district is connected with the water-in in chemical purification district; Described chemical purification district water outlet be connected with the first water feed apparatus of the first wetland reactor.
10. Sewage treatment systems according to claim 9, is characterized in that, described physical cleaning district comprise be connected successively the first layer physical cleaning district, second layer physical cleaning district, third layer physical cleaning district and the 4th floor physical cleaning district; Described the first layer physical cleaning district comprises the one-level fence and cobble filtering system that are connected; Described second layer physical cleaning district comprises the secondary fence be connected with cobble filtering system and the gravel filtering system be connected with secondary fence; Described third layer physical cleaning district comprises the three grades of fence be connected with gravel filtering system and the coarse sand filtering system be connected with three grades of fence; Described 4th floor physical cleaning district comprises the level Four fence be connected with coarse sand filtering system and the fine sand filtering system be connected with level Four fence.
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| CN106180177A (en) * | 2016-07-28 | 2016-12-07 | 赵月 | A kind of method repairing waters heavy metal pollution of soil |
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| CN114249493A (en) * | 2021-12-15 | 2022-03-29 | 西华师范大学 | Frog class sewage treatment circulation system |
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Application publication date: 20150422 |