CN102107991B - Ecological purification system for decentralized domestic sewage of villages and towns in mountain areas - Google Patents
Ecological purification system for decentralized domestic sewage of villages and towns in mountain areas Download PDFInfo
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- CN102107991B CN102107991B CN2010106176038A CN201010617603A CN102107991B CN 102107991 B CN102107991 B CN 102107991B CN 2010106176038 A CN2010106176038 A CN 2010106176038A CN 201010617603 A CN201010617603 A CN 201010617603A CN 102107991 B CN102107991 B CN 102107991B
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Abstract
The invention discloses an ecological purification system for decentralized domestic sewage of villages and towns in mountain areas, which consists of a natural convergence and channel sedimentation basin subsystem, a fall-off oxygenaeration subsystem, a flood and sewage dividing subsystem, an enhanced medium treatment subsystem and a ditch vegetation interception subsystem, wherein in the natural convergence and channel sedimentation basin subsystem, natural runoff channels are taken as a convergence system, and sedimentation basins are built at equal intervals to intercept sediment; the fall-off oxygenaeration subsystem is constructed through natural head drop of mountain creeks according to terrains, the head drop is 5m and ditches above the fall-off oxygenaeration subsystem are smooth; the sewage is filtered and divided by the flood and sewage dividing subsystem; flood and sediment enter the enhanced medium treatment subsystem and a strong adsorption clay material and a sand filler are taken as main media in the enhanced medium treatment subsystem; and the sewage treated by the enhanced medium treatment subsystem enters the ditch vegetation interception subsystem, and is treated and discharged. The ecological purification system is simple and reasonable in structure and low in operating cost and has great promotion and application value in the field of purification of the domestic sewage of the villages and towns in the mountain areas.
Description
Technical field
The present invention relates to the purifying domestic sewage technical system, belong to environmental engineering and environmental science, be used for the processing and the purification of villages and small towns, mountain area dispersed wastewater.
Background technology
Along with society and constant development of economy, water pollution problems is serious day by day, and waste water control has become the key issue that the mankind press for solution.According to investigations, water pollutes the financial loss that causes in China and accounts for 1.46%～2.84% of GDP, and the consequence that body eutrophication causes is particularly serious, and its prominent feature shows as dissolved oxygen and reduces the hydrobiont mass mortality.Although all drop into huge fund in recent years in country and local every year; For example Tenth Five-Year Plan Period is used to comprise that the investment planning of the environmental renovation of water pollution control is 7,000 hundred million yuan; Reached 1% of China's GDP, but up to the present the degree of body eutrophication is growing on and on still.The market town of the combination area of city and country and village sanitary wastewater are in the state of unordered discharging basically, have become one of main source of China's most of basins body eutrophication.Along with the continuous development of rural economy society, increasing rural town emerges.But the infrastructure construction and the environmental management of these rural towns seriously lag behind, and be dirty, Wastewater Concentrated is difficult, and rainfall runoff washes away raceway groove cumulative pollutent, produces instantaneous high-pollution load, has greatly influenced the water quality of receiving water body.Therefore, the improvement to rural town and village sewage is that the present body eutrophication of China is administered and the key of controlling.But because the restriction of technical qualification, construction cost and working cost, the domestic sewage in rural areas by using difficult treatment has become the difficult point and the bottleneck of current water pollution control, and becomes the focus of water pollution problems.
Traditional WWT mainly relies on construction sewage work to handle, but the construction of sewage work not only needs bigger fund input, take bigger level land, and running cost is quite high.In some low developed areas, be difficult to bear and build cost and the working cost that the oxygen system of exposing to the sun disposes of sewage, it is worthy of note that especially in less-developed mountain area, landforms are main with massif, be difficult to find the big area level land that is fit to build Sewage treatment systems.Utilizing the natural purification function of irrigation canals and ditches to handle sewage is a kind of efficient ways; Also there is correlative study to occur at present; But great majority research lays particular emphasis on the research of the network of rivers, Plain irrigation canals and ditches; Mountain area irrigation canals and ditches ecological purification Study on Technology lacks, environmental protection, mountain area irrigation canals and ditches ecological purification technical system formation as yet efficiently.How utilizing irrigation canals and ditches existing natural purification mechanism in mountain area to dispose the villages and small towns dispersed wastewater, is the key issue that presses for solution at present, the objective also of the present invention just.
In sum, the improvement of villages and small towns dispersed wastewater is extremely urgent, but is limited to construction cost and running cost, and traditional treatment technology is difficult in villages and small towns, mountain area big area and promotes.Therefore, utilize the invention of the village dispersed wastewater ecological purification system that the self-purification function of nature irrigation canals and ditches sets up, can not only practice thrift the waste water control expense for country, and the protection water surrounding is had important significance for theories and realistic price.
Summary of the invention
The objective of the invention is to: the shortcoming expensive to existing city domestic sewage treatment technology construction cost, that working cost is high; Villages and small towns, a kind of mountain area dispersed wastewater ecological purification system is provided; This system utilizes the ecological purification function of nature irrigation canals and ditches, the processing dispersed wastewater of suiting measures to local conditions; Simple in structure, have the processing efficiency height, characteristics such as build, running cost is low, can be the mountainous rural area dispersed wastewater and dispose with purification technical support is provided.
The above purpose of the present invention can realize through following measure: a kind of domestic sewage of villages and small towns ecological purification system, by confluxing with raceway groove sedimentation basin subsystem naturally, fall the oxygen subsystem that exposes to the sun, the dirty shunting of flood subsystem, strengthening media processes subsystem and irrigation canals and ditches vegetation and tackle subsystem and constitute; Said conflux naturally and raceway groove sedimentation basin subsystem is the system of confluxing with natural runoff ditch, equidistantly build sedimentation basin, interception irrigation canals and ditches silt, the sewage behind the sediment settlement arrives and falls the oxygen subsystem that exposes to the sun; The said oxygen subsystem that exposes to the sun that falls is according to massif district physical features, artificially makes up or utilizes nature to fall, and carries out sewage and falls the oxygen that exposes to the sun; Can multistagely fall the oxygen that exposes to the sun, fall total throw 5m at least, improve dissolved oxygen content in the sewage; The main reductive pollutants of oxygenolysis reduces BOD, COD content; The miscellany of sewage after falling the oxygen that exposes to the sun or flood, sewage and silt gets into the dirty shunting of flood subsystem; The dirty shunting of said flood subsystem is with low discharge (0-10m
3/ h), the low sewage and big flow (＞10m that contains sand (0-1000mg/L)
3/ h), (shunting of＞1000mg/L) flood, filter, the sewage after the shunting gets into strengthens the media processes subsystem to Gao Hansha; The filtering system of said sewage reinforcement medium through high sticking performance in strengthening the media processes subsystem; Pollutent through absorption, fixing and microbiological deterioration after; Principal pollutant content significantly reduces, and the sewage after strengthening the media processes subsystem processes gets into irrigation canals and ditches vegetation interception subsystem; Flow velocity, prolongation residence time that said irrigation canals and ditches vegetation interception subsystem is disposed of sewage through the reduction of irrigation canals and ditches vegetation, high enrichment vegetation system further absorbs and purification the nutrient in the water and other pollutent simultaneously, makes water outlet reach emission standard; Flood after the shunting passes through irrigation canals and ditches vegetation interception subsystem and reduces flow velocity, interception silt, and the while further absorbs pollutent through the vegetation absorption and purifies, and makes system's water outlet qualified discharge.
Said conflux naturally with raceway groove sedimentation basin subsystem by confluxing raceway groove and be the system of confluxing naturally with natural runoff ditch, form at the sedimentation basin that the raceway groove intermediate reach that confluxes is naturally built; In sedimentation basin, insert filler in advance; The dispersive sewage tentatively mixes sticking in sedimentation basin behind the raceway groove that confluxes naturally, and play the effect of energy dissipating.
Said fall expose to the sun the oxygen subsystem by fall inlet, fall section, stilling basin, backwater pool form; It is wide for 1.0-3.0 rice to fall inlet, straight, smooth, to form high velocity jet; Fall cross section perpendicular, also can multistagely fall, drop is not less than 5m; Fall the section below for stilling basin, fill the rubble that diameter is 3-10cm in the stilling basin at random, rubble thickness is 30cm; Stilling basin links to each other with the backwater pool, and water export and inlet point-blank to form backwater, further do not reduce the speed of current below falling in the backwater pool.
The dirty shunting of said flood subsystem is made up of the dirty shunting of flood diversion trench, filtering net and flood discharging groove; Diversion trench is tubaeform, and it is wide to enter the mouth, export narrow, dark 30cm; The diversion trench exit end is equipped with filtering net, and filtering net is a bamboo product, and the aperture is 2mm, is positioned in the barricade of flood discharging groove lower end, allows that sewage and tiny silt flow through, and big particle diameter silt is tackled and precipitated in the flood discharging groove; Flood discharging groove is positioned at the diversion trench two ends, and three faces have waterwall, the high 1m of waterwall, and thick 24cm is used for the flood earial drainage.
Said reinforcement media processes subsystem is strengthened medium filler layer, lower floor's reinforcement medium filler layer, inverted filter and reinforcement media processes pond thrust-augmenting nozzle by filtering layer, upper strata and is formed.Inverted filter, lower floor strengthen the medium filler layer, the medium filler layer is strengthened on the upper strata and filtering layer is loaded from bottom to top successively; Strengthen media processes pond thrust-augmenting nozzle, be positioned at inverted filter below and subsystem outlet, as the water shoot of disposing of sewage.
Said filtering layer is the cobble filling of 5-10mm by particle diameter, thickness 10-20cm; Purple stone frame (HWR-1) filling of medium filler layer upper strata by particle diameter 0.5-2.0mm strengthened on the upper strata, and thickness is 20-30cm; Lower floor's reinforcement medium filler layer mixes filling by the smectite (MTM-1) of particle diameter 0.01-0.03mm with kaolinite (GLS-1), and blending ratio is 3: 1, thickness 10-20cm; Inverted filter is loaded thickness 15-20cm by the cobble (LS-1, LS-2) of particle diameter 10-30mm.
Said irrigation canals and ditches vegetation interception subsystem is made up of vine, the short stem plant of draft, high-stem plant, small-sized checkdam, small-sized irrigation canals and ditches wetland; Vine is planted in the irrigation canals and ditches side slope or the bottom is washed away with control, forms the combination of height vegetation with draft plant of short stem and high culm plant, increases to cover, and reduces flow velocity, improves the pollutent absorbed dose; Irrigation canals and ditches vegetation interception subsystem is divided into multistage, every section wide 0.5-1.5m, and long 10-20m separates with small-sized checkdam, and small-sized retaining dam can reduce current, increases impact resistance; At irrigation canals and ditches hypsography low-lying place, every 2-3 section vegetation selects hollow hole to construct small-sized irrigation canals and ditches wetland, makes up muskeg with the collocation of height plant, forms the 20-30cm depth of water with small-sized checkdam.
The present invention's advantage compared with prior art is:
(1) the present invention has set up villages and small towns, mountain area dispersed wastewater ecological purification technical system; Utilize the mountain area natural condition; According to the natural purification principle, strengthen the ecological purification function, each processing subsystem of design with suiting measures to local conditions; Can efficiently purify domestic sewage of villages and small towns, reach the sanitary sewage disposal emission standard.
(2) the present invention utilizes nature to fall the oxygen that exposes to the sun, and the energy consumption of disposing of sewage is low, utilizes indigenous plant to recover the coombe vegetation simultaneously, and therefore this invention has also taken into account energy-saving and emission-reduction and ecological recovery benefit when purifying liquid waste.
(3) the present invention mainly utilizes mountain area nature irrigation canals and ditches, constructs ecological purification system, have occupation of land less, construction and the low characteristics of running cost, overcome the shortcoming that traditional sewage disposal technology construction cost is expensive, running cost is high, be adapted at the mountain area and promote.
(4) the present invention mainly utilizes natural purification and ecological purification principle, adopts indigenous plant to rebuild the irrigation canals and ditches vegetation, and system management is easy, is easy to grasp and operation.
In a word; The present invention is theoretical according to ecological purification, and in conjunction with the principle of design of sanitary sewage disposal, design has the ecological purification system of functions such as collection confluxes, shunting, deposition, interception, absorption, oxidation, dilution with suiting measures to local conditions; And construction cost is low, running cost is few, and simple and convenient management is prone to row.
Description of drawings
Fig. 1 is one-piece construction of the present invention and functional schematic;
Fig. 2 is of the present invention confluxing naturally and raceway groove sedimentation basin subsystem structure synoptic diagram;
Fig. 3 is the oxygen subsystem structure synoptic diagram that exposes to the sun that falls of the present invention;
Fig. 4 is the dirty shunting of a flood of the present invention subsystem structure synoptic diagram;
Fig. 5 is a reinforcement media processes subsystem structure synoptic diagram of the present invention;
Fig. 6 is an irrigation canals and ditches vegetation interception subsystem structure synoptic diagram of the present invention.
Embodiment
As shown in Figure 1, villages and small towns, a kind of mountain area of the present invention dispersed wastewater ecological purification system is by confluxing with raceway groove sedimentation basin subsystem 1 naturally, fall the oxygen subsystem 2 that exposes to the sun, the dirty shunting of flood subsystem 3, strengthening media processes subsystem 4 and irrigation canals and ditches vegetation interception subsystem 5 constitutes.Naturally conflux and raceway groove sedimentation basin subsystem 1 is the system of confluxing with natural runoff ditch, equidistantly build sedimentation basin, interception irrigation canals and ditches silt, the sewage behind the sediment settlement arrives and falls the oxygen subsystem 2 that exposes to the sun.Fall the oxygen subsystem 2 that exposes to the sun according to massif district physical features, artificially make up or utilize nature to fall, carry out the sewage natural oxygen that exposes to the sun; The oxygen that can multistagely expose to the sun falls total throw 5m at least, improves dissolved oxygen content in the sewage; The main reductive pollutants of oxygenolysis reduces BOD, COD content; The miscellany of sewage after falling the oxygen that exposes to the sun or flood, sewage and silt gets into the dirty shunting of flood subsystem 3.The dirty shunting of said flood subsystem 3 with low discharge, lowly contain the flood shunting of husky sewage and big flow, Gao Hansha and filter, shunting gets into reinforcement media processes subsystem 4 with filtered sewage.Sewage is being strengthened media processes subsystem 4 at first through filtering, subsequently pollutent through absorption, fixing and microbiological deterioration after, pollutant load significantly reduces, and gets into the irrigation canals and ditches vegetation and tackles subsystem 5 through strengthening sewage after media processes subsystem 4 is handled.Flow velocity, prolongation residence time that irrigation canals and ditches vegetation interception subsystem 5 is disposed of sewage through the reduction of irrigation canals and ditches vegetation, vegetation system further absorbs and purification the nutrient in the water and other pollutent simultaneously, makes water outlet reach emission standard; Flood after the shunting passes through irrigation canals and ditches vegetation interception subsystem 5 and reduces flow velocitys, interception silt, and the while further absorbs pollutent through the vegetation absorption and purifies, and makes system's water outlet qualified discharge.
As shown in Figure 2, the present invention is confluxed naturally and (wherein, a is 1.5m to raceway groove sedimentation basin subsystem 1, and b is 1m; C is 0.2m, and d is 0.5m, and e is 0.3m; F is 0.3m, and g is 1m) utilize that massif district nature runoff coombe confluxes, afflux is to the exit or entrance of a clitch, can form or set up the nature raceway groove 6 that confluxes according to village, villages and small towns characteristics; Sedimentation basin is built at the exit or entrance of a clitch at the raceway groove 6 that confluxes naturally, and the long 1.5m of sedimentation basin, wide 1m, dark 1m fill out the thick half weathering purple rhogosol of 30cm in advance in the pond.Naturally confluxing, every 100m sets up similar sedimentation basin 7 in the raceway groove.The thickness of inserting filler in the sedimentation basin 7 in advance is not less than 30cm, but is no more than 50cm.
As shown in Figure 3, the present invention falls the oxygen subsystem 2 that exposes to the sun (wherein, h is 5m, and i is 8m, and j is 0.3m) by falling inlet 8, falling section 9, stilling basin 10, backwater pool 11 and form.Fall section 9 according to massif district physical features, artificial foundation, total throw reaches 5-10m, falls the wide 1.0-3.0m of inlet, and is straight, smooth, to form the thin layer high velocity jet.Fall the lower end stilling basin 10 is set, stilling basin specification: 4.0-5.0m (length) * 2.0-3.0m (wide) * 0.5m (deeply), the rubble of selecting for use size, shape to differ on the spot in the pond, random alignment is filled, the thick 0.2-0.3m of rubble (like k among Fig. 3); The stilling basin below is right after backwater pool 11, and backwater pool water inlet and water outlet dislocation are arranged, and form backwater, reduce flow velocity.
As shown in Figure 4, flood dirty shunting subsystem 3 of the present invention (wherein, l is 2m, and m is 1m, and n is 0.5m, and o is 0.15m, and p is 0.8m, and q is 0.2m, and r is 0.2m) is made up of the dirty shunting of flood diversion trench 12, filtering net 13 and flood discharging groove 14.Wherein diversion trench 12 is a primary clustering, and for tubaeform, it is wide to enter the mouth, and exports narrowly, and width is respectively 50,15cm, dark 30cm; The diversion trench exit end is equipped with filtering net 13, and filtering net is square, filter screen aperture 2mm, and bamboo product, cost is low and hard, places in the dredging flow groove waterwall, and diversion trench passes waterwall; Dredging flow groove 14 is positioned at the diversion trench both sides, and three faces have waterwall, the high 1m of waterwall, and thick 24cm, dredging flow groove enters the mouth than the high 5cm of diversion trench, and wide 50-100cm, dredging flow groove have 2 water outlets, wide 50cm, the high 20cm of water outlet barricade.
As shown in Figure 5, (wherein, s is 1.5m in order to strengthen the media processes pond to strengthen media processes subsystem 4; T is 2m; U is 0.1m, and v is 0.2m, and w is 0.15m; X is 2.5m), it is strengthened medium filler layer 16, lower floor's reinforcement medium filler layer 17, inverted filter 18 by filtering layer 15, upper strata and strengthens media processes pond thrust-augmenting nozzle 19 and form.The intensified process pond is provided with water port at the bottom of the pond, fixes a drainpipe.Strengthen the media processes pond by filling inverted filter 18, lower floor's reinforcement medium filler layer 17, upper strata reinforcement medium filler layer 16, filtering layer 15 from bottom to top; Inverted filter 18 is loaded thickness 10-20cm by the cobble (LS-1, LS-2) of particle diameter 10-30mm; Strengthen media processes pond thrust-augmenting nozzle 19, be positioned at the outlet of inverted filter 18 belows and subsystem, as the water shoot of disposing of sewage.Thrust-augmenting nozzle 19 front ends are equipped with nylon wire, and the diameter of thrust-augmenting nozzle 19 is 10cm.Lower floor strengthens medium filler layer 17 smectite by particle diameter 0.01-0.03mm (MTM-1) and mixes filling with kaolinite (GLS-1), and ratio is 3: 1, thickness 10-20cm; Purple stone frame (HWR-1) filling of medium filler layer 16 by particle diameter 0.5-2.0mm strengthened on the upper strata, and thickness is 20-30cm; Above the medium filler layer, load filtering layer 15, filtering layer 15 is the cobble filling of 5-10mm by particle diameter, thickness 15-20cm.
As shown in Figure 6, irrigation canals and ditches vegetation interception subsystem 5 is made up of the short stem plant of vine 20, draft 21, high-stem plant 22, small-sized checkdam 23, small-sized irrigation canals and ditches wetland 24.Vine 20 is planted in the irrigation canals and ditches side slope or the bottom is washed away with control, forms the combination of height vegetation with draft plant 21 of short stem and high culm plant 22, increases to cover, and reduces flow velocity, improves the pollutent absorbed dose; Irrigation canals and ditches vegetation interception subsystem 5 is divided into multistage, every section wide 0.5-1.5m, and long 10-20m, the irrigation canals and ditches vegetation separates with small-sized checkdam 23, and small-sized retaining dam 23 can reduce current, increases impact resistance, and the dash dam width is identical with furrow width, high 30cm; At irrigation canals and ditches hypsography low-lying place; Every 2-3 section vegetation selects hollow hole to construct small-sized irrigation canals and ditches wetland 24; Make up muskeg with the collocation of height plant, form the 20-30cm depth of water, increase the residence time of sewage with small-sized checkdam 23; Make up irrigation canals and ditches vegetation interception subsystem thus, and form stable ecological canal interception system gradually.The irrigation canals and ditches vegetation cradles results once spring and summer in per February, and gather in the crops altogether once autumn and winter, and can gather in the crops 3-5 time the whole year.The results vegetation is recycled and makes feed or green manure, avoids secondary pollution.
In a word; The present invention is rational in infrastructure, construction cost is few, management is easy, running cost is low; Mountain area, the hills area domestic sewage of villages and small towns that lags behind for the environmental basis construction provides effective purification techniques system, in the purifying domestic sewage field in villages and small towns, vast mountain area, village bigger application value arranged.
Claims (5)
1. villages and small towns, mountain area dispersed wastewater ecological purification system is characterized in that: by confluxing with raceway groove desilting subsystem (1) naturally, fall the oxygen subsystem (2) that exposes to the sun, big vast dirty shunting subsystem (3), strengthening media processes subsystem (4) and irrigation canals and ditches vegetation interception subsystem (5) formation; Said conflux naturally and raceway groove desilting subsystem (1) is the system of confluxing with natural runoff ditch, equidistantly build sedimentation basin, interception irrigation canals and ditches silt, the sewage behind the sedimentation silt arrives and falls the oxygen subsystem (2) that exposes to the sun; The said oxygen subsystem (2) that exposes to the sun that falls is according to massif district physical features, artificially makes up or utilizes nature to fall, and carries out sewage and falls the oxygen that exposes to the sun, and falls total throw 5m at least, and to improve dissolved oxygen content in the sewage, the oxygenolysis reductive pollutants reduces BOD, COD content; The miscellany of sewage after falling the oxygen that exposes to the sun or flood, sewage and silt gets into the dirty shunting of flood subsystem (3); Said flood dirty shunting subsystem (3) with low discharge, lowly contain the flood shunting of husky sewage and big flow, Gao Hansha and filter, shunting gets into reinforcement media processes subsystem (4) with filtered sewage; Said sewage is being strengthened media processes subsystem (4) through filtering, pollutent through absorption, fixing and microbiological deterioration after, pollutant load significantly reduces, and gets into the irrigation canals and ditches vegetation and tackles subsystem (5) through strengthening sewage after media processes subsystem (4) is handled; The flow velocity that said irrigation canals and ditches vegetation interception subsystem (5) is disposed of sewage through the reduction of irrigation canals and ditches vegetation, prolongation residence time, vegetation system further absorbs and purification the nutrient in the water and other pollutent simultaneously, makes water outlet reach emission standard; Flood after the shunting passes through irrigation canals and ditches vegetation interception subsystem (5) and reduces flow velocity, interception silt, and the while further absorbs pollutent through the vegetation absorption and purifies, and makes system's water outlet qualified discharge;
Said conflux naturally and raceway groove desilting subsystem (1) is made up of the raceway groove that confluxes naturally (6), the sedimentation basin of building at the raceway groove that confluxes naturally (6) intermediate reach (7); In sedimentation basin (7), insert filler in advance; Dispersed wastewater tentatively mixes sticking in sedimentation basin (7) behind the raceway groove that confluxes naturally (6), and play the effect of energy dissipating;
Said fall expose to the sun oxygen subsystem (2) by fall inlet (8), fall section (9), stilling basin (10), backwater pool (11) form; Falling inlet (8) wide is 1.0-3.0 rice, straight, smooth, to form high velocity jet; It is vertical to fall section (9), perhaps multistage falling, and drop is not less than 5m; Fall the section below for stilling basin (10), fill the rubble that diameter is 3-10cm in the stilling basin (10) at random, rubble thickness is 30cm; Stilling basin (10) links to each other with backwater pool (11), and water export and inlet point-blank to form backwater, further do not reduce the speed of current below falling in backwater pool (11);
Said flood dirty shunting subsystem (3) is made up of the dirty shunting of flood diversion trench (12), filtering net (13) and flood discharging groove (14); Diversion trench (12) is tubaeform, and it is wide to enter the mouth, export narrow, dark 30cm; Diversion trench (12) exit end is equipped with filtering net (13), and filtering net is a bamboo product, and the aperture is 2mm, is positioned in the barricade of flood discharging groove (14) lower end, allows that sewage and tiny silt flow through, and big particle diameter silt is tackled and precipitated in the flood discharging groove (14); Flood discharging groove (14) is positioned at diversion trench (12) two ends, and three faces have waterwall, the high 1m of waterwall, and thick 24cm is used for the flood earial drainage;
Said reinforcement media processes subsystem (4) is strengthened medium filler layer (16), lower floor's reinforcement medium filler layer (17), inverted filter (18) by filtering layer (15), upper strata and is strengthened media processes pond thrust-augmenting nozzle (19) and form; Inverted filter (18), lower floor strengthen medium filler layer (17), medium filler layer (16) is strengthened on the upper strata and filtering layer (15) is loaded from bottom to top successively; Strengthen media processes pond thrust-augmenting nozzle (19), be positioned at inverted filter (18) below and strengthen the outlet of media processes subsystem, as the water shoot of disposing of sewage;
Said irrigation canals and ditches vegetation interception subsystem (5) is made up of vine (20), the short stem plant of draft (21), high-stem plant (22), small-sized checkdam (23), small-sized irrigation canals and ditches wetland (24); Vine (20) is planted in the irrigation canals and ditches side slope or the bottom is washed away with control, forms the combination of height vegetation with draft plant of short stem (21) and high culm plant (22), increases to cover, and reduces flow velocity, improves the pollutent absorbed dose; Irrigation canals and ditches vegetation interception subsystem (5) is divided into multistage, every section wide 0.5-1.5m, and long 10-20m separates with small-sized checkdam (23), and small-sized retaining dam (23) reduces current, increases impact resistance; At irrigation canals and ditches hypsography low-lying place, every 2-3 section vegetation selects hollow hole to construct small-sized irrigation canals and ditches wetland (24), makes up muskeg with the collocation of height plant, forms the 20-30cm depth of water with small-sized checkdam (23).
2. villages and small towns, mountain area according to claim 1 dispersed wastewater ecological purification system is characterized in that: described sedimentation basin (7) distance apart is 100m.
3. villages and small towns, mountain area according to claim 1 dispersed wastewater ecological purification system is characterized in that: the thickness of inserting filler in the described sedimentation basin (7) in advance is not less than 30cm, but is no more than 50cm.
4. villages and small towns, mountain area according to claim 1 dispersed wastewater ecological purification system is characterized in that: said filtering layer (15) is the cobble filling of 5-10mm by particle diameter, thickness 10-20cm; The purple stone frame HWR-1 filling of medium filler layer upper strata (16) by particle diameter 0.5-2.0mm strengthened on the upper strata, and thickness is 20-30cm; Lower floor's reinforcement medium filler layer (17) mixes filling by the smectite MTM-1 of particle diameter 0.01-0.03mm with kaolinite GLS-1, and blending ratio is 3: 1, thickness 10-20cm; Inverted filter (18) is loaded thickness 15-20cm by cobble LS-1, the LS-2 of particle diameter 10-30mm.
5. villages and small towns, mountain area according to claim 1 dispersed wastewater ecological purification system is characterized in that: said reinforcement media processes pond thrust-augmenting nozzle (19) diameter is 10cm.
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| CN102704437A (en) * | 2012-06-14 | 2012-10-03 | 中国矿业大学 | Coal mining subsidence area cultivation water source reconstruction method suitable for complex mountain area |
| CN106145317A (en) * | 2016-08-24 | 2016-11-23 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of Multifunction oxidation pond for rural domestic sewage treatment |
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