CN207047066U - A kind of domestic sewage of villages and small towns rural area landscape type total system - Google Patents

Abstract

The utility model discloses a kind of domestic sewage of villages and small towns rural area landscape type total system, belong to sewage disposal and landscape ecosystem technical field.The characteristics of purpose is the stability based on conventional processes, the advantage of effect, very not rare with reference to rural holding resource, and polydispersion is laid out, develop the sewage disposal system of small-sized treating capacity.Specifically, domestic sewage of villages and small towns rural area landscape type total system, including buried biochemical preprocessing system and rural area landscape wetland system, the buried biochemical preprocessing system includes sewage disposal system water inlet, grid, sedimentation basin, anaerobic filter, anaerobic pond, contact-oxidation pool, second pond, the cistern for passing sequentially through the connection of nature overflow manner, cistern connects rural area landscape wetland system by water pump, and the rural area landscape wetland system includes the one-level wetland unit and two level wetland unit being serially connected.

Description

A kind of domestic sewage of villages and small towns rural area landscape type total system

Technical field

The utility model is specifically related to a kind of domestic sewage of villages and small towns rural area landscape type total system, belongs to sewage disposal And landscape ecosystem technical field.

Background technology

In April, 2015, clearly proposed in " ten, the water " that State Council signs and issues：" will according to the new urbanization planning of country Ask, to the year two thousand twenty, all county towns in the whole nation and emphasis town possess sewage collecting disposal ability, county town, treatment rate of domestic sewage difference Reach 85%, 95% or so "." accelerate rural environment comprehensive improvement.Using administrative areas at the county level domain as unit, carry out at country sewage Unified planning, unified construction, unified management are managed, conditional area is actively pushed forward urban wastewater treatment facility and serviced to rural area Extension ".

Current national rural area has more than 90 hundred million tons of sanitary sewages directly to discharge every year, most villages do not have discharge conduit and Sewage disposal system, it is one of the main reason for causing water environment pollution and body eutrophication.Actively develop rural area compact community Sewage Treatment Facilities and its supporting sewage collecting pipeline network construction, Rural Water Environment pollution problem can be efficiently controlled, Conscientiously accomplish the protection to environmental resource, realize society, economy, environment harmonious development.

Domestic sewage of villages and small towns pollution type is based on the pollution of organic oxygen consumption and nitrogen and phosphorus pollution, and bio-degradable is good, and N, P contain Amount is high, but discharges scattered；Built in villages and small towns similar to the sewage treatment plant in cities and towns or transport domestic sewage in rural areas by pipeline Deliver to cities and towns, it is required costly, traditional waste water treatment process because of construction cost height, operating cost height, high energy consumption, to nitrogen, phosphorus Poor removal effect, it is difficult to adapt to the needs of rural domestic sewage treatment.Therefore, urgent need minimizes, construction cost is low, operating cost Processing system low, management service is convenient, treatment effect and ecoscape effect are good.

Rural area domestic sewage of villages and small towns processing system more commonly used at present or device include following type：

First：Traditional handicraft.These techniques include activated sludge, oxidation ditch, A/O, A²/ O, SBR, biofilter etc..This A little technologies are skillful, but due to its higher investment cost and operating cost, and the complexity of operational administrative, even if building up It also is difficult to maintain the operation of normal table, therefore is not suitable for handling country sewage.

Second：Ecological process.Common are artificial swamp, soil filtration, oxidation pond etc., but due to its floor space compared with Greatly, treatment effeciency is limited, and in part, the area of shortage of land resource is difficult to be widely popularized.

3rd：Advanced technologies.Such as membrane bioreactor, high concentration sludge can be maintained, removes suspended particulate.But because its compared with The operating cost of high investment cost, and the complexity of operational administrative, are not appropriate for country sewage treatment in situ.

Existing domestic sewage of villages and small towns processing system or device, single technical finesse is used mostly, such as artificial swamp, algae The pool, Efficiency for Soil Aquifer Treatment etc., its shortcoming are：Certain technical finesse of single use is ineffective, comprehensive big using floor space, very Multiprocessing process does not pass through the assimilation of underground water loaded filter.Or integrated processing technique is used, take up an area although saving, installation It is convenient.But the handling principle of integral system how many does not innovate, and final-period management maintenance is depended critically upon, not safeguarded, Basic failure.

Utility model content

Therefore, the utility model is directed to the above mentioned problem of prior art, stability, effect based on conventional processes Advantage, it is very not rare with reference to rural holding resource, and the characteristics of polydispersion layout, develop the sewage disposal of small-sized treating capacity System.

Specifically, domestic sewage of villages and small towns rural area landscape type total system, including buried biochemical preprocessing system and Rural area landscape wetland system, the buried biochemical preprocessing system include passing sequentially through at the sewage of nature overflow manner connection Reason system water inlet, grid, sedimentation basin, anaerobic filter, anaerobic pond, contact-oxidation pool, second pond, cistern, cistern pass through Water pump connects rural area landscape wetland system, and the rural area landscape wetland system includes one-level wetland unit and the two level being serially connected Wetland unit.

Further, the buried biochemical rectangular setting of preprocessing system, it is buried or half embedding system.

Further, the sewage disposal system water inlet connection sewage network or septic tank.

Further, the grid is made up of the metal grizzly bar of one group of screen cloth or parallel gate stripe pitch e=10mm, grid peace Mounted in sewage disposal system water inlet front end, grid mounted angle α=60 °, grid pond inside dimension is long 0.7m, wide 0.6m, High 1.0m, grid pond are located inside sedimentation basin, and grid uses concrete structure, and bottom and side carry out antiseepage leakproof Anti-scratching Processing, sedimentation basin effectively interior path length 2.2m, wide 2m, constructional depth 3m, sedimentation basin are internally provided with dividing plate.

Further, the anaerobic filter includes anti-filter unit and anaerobic unit,

Anti-filter unit bottom arranges filler, anti-filter unit inside dimension long 2.2m, wide 1.3m, constructional depth 3m, bottom cloth Packed height 1m is put, filler is rubble, coarse sand, the biological treatment structures of flyash composition；

Anaerobic unit filling flexible filler, anaerobic unit inside dimension long 2.2m, wide 1.3m, constructional depth 3m, flexibility are filled out Material is arranged in middle part, is highly 1m.

Further, the long 2.2m of contact-oxidation pool inside dimension, wide 2.1m, constructional depth 3m, effective operation depth 2.3m, dischargeable capacity 10.6m³, contact-oxidation pool bottom arrangement microporous aeration device, pond body middle part addition flexible filler.

Further, the long 1m of second pond inside dimension, wide 1m, constructional depth 3m, mixing suspension access two by pipeline Heavy bottom of pond portion water outlet, delivery port set hydraulic barrier, and supernatant then enters cistern by triangle downflow weir, second pond it is effective Operation depth is 2.3m, dischargeable capacity 2.3m³, secondary clarifier effluent end sets screen cloth；

The long 1m of cistern inside dimension, wide 1m, constructional depth 3m, bottom installing submersible pump and level monitoring device.

Further, the physical dimension of the one-level wetland unit is：6.2m × 6m × 1.5m, one-level wetland unit bottom Water inlet pipe managed using DN50 UPVC, two side perforations, perforate spacing 15cm, perforation size 10mm, spacing 0.5m between water distributor, One-level wetland unit filler depth 1.2m, filler arrange five layers altogether：First layer is gravel, 50~100mm of particle diameter, and depth of packing is 30cm, the layer are water inlet water distribution layer；The second layer is cinder rock, 30~50mm of particle diameter, depth of packing 30cm；Third layer is fine ash Rock, particle diameter 10mm, depth of packing 30cm；4th layer is coarse sand, and particle diameter 2mm, depth of packing 20cm, the layer is into water layer；The Five layers are soil, for providing living space, depth of packing 10cm for Root of Wetland Plants；

One-level wetland unit is the mode of vertical subsurface flow, and top layer is soil horizon, plants wetland plant, and water distributor is located at wetland Bottom, water distributor are used to make current enter wetland from bottom, upward cross flow, enter two by apopore reserved above water distributor Level wetland unit.

Further, the physical dimension of the two level wetland unit is：6.2m × 6m × 0.8m, two level wetland unit are table The mode of surface current, two level wetland unit filler depth 0.4m, filler are arranged two layers altogether：First layer is gravel, particle diameter 50~ 100mm, depth of packing 20cm；The second layer is cinder rock, 30~50mm of particle diameter, depth of packing 20cm.

Wherein, the wetland plant of the one-level wetland unit includes emergent aquactic plant, and the wetland of the two level wetland unit is planted Thing includes emergent aquactic plant, floating plant and submerged plant.

The beneficial effects of the utility model are：Domestic sewage of villages and small towns rural area landscape type General Office provided by the utility model Reason system, compared with prior art, there is advantages below：

Buried biochemical pretreatment technology is arranged in underground, can be all buried or half is buried.Overall floor space is small, digs Side's amount is small.If half is buried, exposed parts can uniformly be made together with comprehensive room with reference to local farm building style, will not Seem lofty.Buried processing makes full use of space, and aboveground space can not influence rural area entirety style and features with second ploughing or greening.

Rural area landscape wetland system arrangement on the ground, but is not limited to regular figure, can be built with surrounding landscape close With reference to contributing to rural area to afforest, while water body purification is realized, reach beautification landscape, bring the purpose of economic benefit；

The utility model fully utilizes physical action, microbial action and Wetland ecological measure processing sanitary sewage, tool The advantages that water position reason effect is good, construction investment is low, energy consumption is small, operating cost is low and management service facilitates；

The utility model adds anti-filter layer system compared with prior art, and treated sewage passes through the assimilation of anti-filter layer system Effect, can effectively kill the microorganisms such as bacterium, virus.Due to the wetland of the particular fillers combination earth's surface of loaded filter, greatly enhance Denitrogenation dephosphorizing function.

It is rational in infrastructure compact, be embedded in underground and be favorably incubated, cold winter still can normal operation, pollution-free, noiseless, Free from extraneous odour, reduce secondary pollution；

Using time set timing operation, automaticity is high, and pipe dimension is convenient, it is not necessary to the regular post of professional； Energy consumption is low, and only water pump, air blower, sludge pump need to power.

Brief description of the drawings

Fig. 1 is sewage treatment process figure of the present utility model；

Fig. 2 is domestic sewage of villages and small towns rural area landscape type total system overall structure diagram；

Fig. 3 is grid and precipitation pool process floor map；

Fig. 4 is grid and precipitation pool process diagrammatic cross-section；

Fig. 5 is anaerobic filter technique floor map；

Fig. 6 is anaerobic filter technique diagrammatic cross-section；

Fig. 7 is catalytic oxidation pool process floor map；

Fig. 8 is catalytic oxidation pool process diagrammatic cross-section；

Fig. 9 is second pond, water storage pool process floor map；

Figure 10 is second pond, water storage pool process diagrammatic cross-section；

Figure 11 is landscape wetland horizontal layout schematic diagram；

Figure 12 is that landscape wetland section arranges schematic diagram.

Embodiment

Specific embodiment of the present utility model is illustrated below in conjunction with the accompanying drawings：

The handling process for buried biochemical pretreatment technology+landscape wetland that the utility model mainly uses, is realized to village The middle-size and small-size compact community in town or the purified treatment of village sanitary sewage, pollutant emission standard is reached, alleviate rural area water Pollution problem, improve the quality of water environment in big region.

Concrete technology flow process is as shown in Figure 1：

The sewage treatment process is described as follows:

Sanitary sewage is collected by sewage network enters after septic tank or flows directly into (no septic tank) grid pond.Grid Grid baffle plate is provided with pond, the bulk debris in sewage can be intercepted, prevents from blocking pipeline and subsequent processing device.

Sewage enters sedimentation basin afterwards.Acted on using natural gravity, precipitation removes the suspended material (SS) in sewage, contains Nitrogen material based on ammonification, nitration reaction, is prepared under bacterium, microbial action for follow-up denitrogenation dephosphorizing.

Then sewage enters anaerobic filter.Anaerobic filter bottom lay certain altitude filler, filler by a variety of different-grain diameters, The rigid particles of different components are formed.Sewage enters anaerobic filter from top, and is flowed out by the packing layer of bottom.Packing layer can To play a part of filtering, capture, absorption to the suspension in sewage, while it is attached to micro- life inside filler surface and pond body Thing can make full use of the nutriment of early stage to carry out denitrification denitrogenation under anaerobic environment, and anaerobic condition polyP bacteria is abundant Releasing phosphorus is beneficial to the suction phosphorus effect of subsequent touch oxidation pond.

Then sewage enters contact-oxidation pool.Contact-oxidation pool is provided with flexible filler, gives microorganism and sufficiently grows Space is depended on, bottom arrangement microporous aeration device, under optimum conditions, oxygenic aeration is intermittently carried out to cesspool and is stirred Mix, microorganism removes dirty organic pollutants in aerobic environment, while polyP bacteria fully absorbs phosphorus.

Then sewage enters second pond.Under static condition, the microorganism in suspension gradually assembles, adsorbs, precipitated, and sinks Product is in bottom, by regular outer blowdown mud, reaches the effect of dephosphorization.Supernatant then enters cistern by triangle downflow weir.

In cistern, by the automatic numerical control device such as fluid level controller, water pump start and stop are controlled according to different water level conditions. During pump working, while drawn water to landscape wetland and anaerobic filter.Recirculation water is again introduced into anaerobic filter, and aeration effect makes nitrogenous Material fully nitrifies, and carries out denitrification again in loaded filter, strengthens denitrification effect；Part of contaminated water then enters landscape wetland, successively By one, two two stages for the treatment of units, COD, BOD, SS, NH remaining in sewage are further removed₃The pollutant such as-N, TN, TP, most Qualified discharge afterwards.

Sediment, sludge the like waste will be cleared up periodically caused by each processing equipment operation phase.Wetland variation unit It is additionally provided with drainpipe and is connected to sedimentation basin, when being rinsed so as to system, receives flushing waste water.

The handling process needs auxiliary construction small comprehensive room to be used to dispose Aeration fan, water pump, sludge pump, numerical control electrically to fill Put, common equipment and the instrument such as electricity box.

Domestic sewage of villages and small towns rural area landscape type total system overall structure is as shown in Fig. 2 before including buried biochemistry Processing system and rural area landscape wetland system, the concrete structure design of each several part are as follows：

Grid and sedimentation basin：

As shown in Figure 3, Figure 4, grid is made up of one group of parallel metal grizzly bar or screen cloth, installed in sewage disposal system Water inlet front end, to retain larger suspension or floating object.The process object of sedimentation basin is suspended material (SS), while can To remove part BOD₅, the service condition of biological treatment structures can be improved and reduce its BOD₅Load.

The utility model designs water substantially in 50-500m³/ d scopes, belong to miniature, small-sized scale.Grid is intended using Fine fack, grizzly bar spacing e=10mm, grid mounted angle α=60 °, in order to artificial periodic cleaning.Grid pond internal diameter size is grown 0.7m, wide 0.6m, high 1.0m.Grid pond is located inside sedimentation basin.Grid water inlet connects sewage network, and sewage passes through grizzly bar mistake After filter, handled by bottom pipe into sedimentation basin.Grid is intended using concrete structure, and bottom and side carry out antiseepage leakproof Anti-scratching processing.

The effective inside dimension of sedimentation basin long 2.2m, wide 2m, constructional depth 3m.Sedimentation basin is internally provided with dividing plate, it is ensured that dirty Water is most long by sedimentation basin bottom, flow path.Sedimentation basin available depth is expected to be 2.5m, superelevation 0.5m.Dischargeable capacity is 11m³.System processing flow presses 50-100m³/ d considers that then the hydraulic detention time of sedimentation basin meets effective about in 2.7-5.4h Sedimentation time requires.Sewage SS influent concentrations are based on 200mg/L, and sedimentation basin treatment effeciency is based on 20%, then system often produces mud daily About 2-4kg/d is measured, activated sludge density presses 1.003kg/m³Calculate, then daily theoretical production mud volume is about 1.9-3.9m³/ d, it is Spoil disposal gap united as 3-4 days.

In sedimentation basin, suspended particulate matter precipitates under natural gravity effect, is extruded naturally under hydrostatic pressure to subtract Small size.Upper water then enters anaerobic filter by the pipeline above sedimentation basin.Overfall is set simultaneously above outlet pipe, with The situation that the increase of reply burst flow or rain dirt do not shunt.

Anaerobic filter：

As shown in Figure 5, Figure 6, anaerobic filter primarily serves the effect of anaerobic digestion and filtering, is divided into anti-filter unit and anaerobism Unit two parts.

Anti-filter unit in bottom by arranging filler, for filtering and adsorbing suspended material.Anti-filter unit inside dimension is grown 2.2m, wide 1.3m, constructional depth 3m.Packed height 1m is arranged in bottom, and filler is mainly by various rubbles, coarse sand, flyash etc. The biological treatment structures that filler is formed, sewage and the microbial film gap-contact grown on filler surface, make sewage obtain only Change.

Anaerobic unit provides the space depended on growth reproduction for anaerobic bacteria, builds anaerobism ring by filling flexible filler Border, make organic matter that hydrolysis acidification occur, remove useless Organic substance in water, and improve the biodegradability of sewage, it is follow-up good to be advantageous to Oxygen processing.Anaerobic environment can also promote denitrification simultaneously, improve the removal to nitrogen.Anaerobic unit inside dimension is grown 2.2m, wide 1.3m, constructional depth 3m.Flexible filler is arranged in middle part, and height is about 1m.

Anti-filter unit intends 5 layers of filler of arrangement altogether from the bottom to top：

First layer filler：Gravel, Main Ingredients and Appearance is based on silica, 50~100mm of particle diameter, depth of packing 20cm.

This layer of filler major function support and water outlet, sewage after multiple filtration is handled, are filtered by anaerobism from top to bottom Bottom of pond portion water passage enters anaerobic unit.This layer of gravel filling particle diameter is larger, while this layer of pre-buried backwash tube, goes out in filtering layer During existing clogging, can carry out backwash regenerates filter layer.

Second layer filler：Gravel, Main Ingredients and Appearance is based on silica, 30~50mm of particle diameter, depth of packing 20cm.

Third layer filler：Cinder rock particle, Main Ingredients and Appearance is based on calcium carbonate, 30~50mm of particle diameter, depth of packing 20cm.

4th layer of filler：Fine ash rock particle, Main Ingredients and Appearance is based on calcium carbonate, particle diameter 10mm, depth of packing 20cm.

Second, third, the 4th layer of filler major function be filtering and dephosphorization.PO present in water₄ ^3-Ion can be filled out with limestone Expect the Ca of release²⁺Form precipitation and be removed.The microorganism on filler surface is attached to, is degraded and is removed in sewage by bio-absorbable Organic matter and nitrogen-containing pollutant.

Layer 5 filler：Gravel, Main Ingredients and Appearance is based on silica, 10~30mm of particle diameter, depth of packing 20cm.Should Layer filler major function is filtering, further reduces the SS contents of sewage, reduces the possibility that rear end filtering layer filler blocks, and is ensured System can be with permanently effective operation.Positioned at showing in order to clearing up and dredge.Table 1 is each layer filling property function one of anaerobic filter Look at table (from bottom to top).

Table 1

Title

Main Ingredients and Appearance

Particle diameter (mm)

Thickness (cm)

Major function

Remarks

First layer

Gravel

SiO2

50-100

20

Support, water outlet

Backwash tube

The second layer

Gravel

SiO2

30-50

20

Denitrogenation dephosphorizing

Third layer

Cinder rock

CaCO3

30-50

20

Denitrogenation dephosphorizing

4th layer

Fine ash rock

CaCO3

10

20

Denitrogenation dephosphorizing

Without layer

Gravel

SiO2

10-30

20

Filtering

Anaerobic unit filling flexible anaerobism filler.Filler spacing 40cm, thickness 1m.

It is 2.45m, superelevation 0.55m that anti-filter unit, which effectively runs the depth of water,.Dischargeable capacity is 5m³.System processing flow presses 50- 100m³/ d considers that then anti-filter unit hydraulic detention time is in 1.2-2.4h.Anaerobic unit effectively runs depth of water 2.35m, superelevation 0.65m.Dischargeable capacity is 6.7m³.System processing flow presses 50- 100m³/ d considers that then anaerobic unit hydraulic detention time exists 1.6-3.2h.Anaerobic filter totality hydraulic detention time is 2.8-5.6h.

It is water inlet above anti-filter unit, receives sedimentation basin water.After passing through loaded filter, pass through filtering layer bottom Passage enter anaerobic unit.The delivery port of anaerobic unit is above, i.e., flow path of the current in anaerobic filter is certainly Under above, and from bottom to top, sewage is set fully to stop, with microbial reaction.

Contact-oxidation pool：

As shown in Figure 7, Figure 8, contact-oxidation pool primarily serves the aerobic function of removing removal organic polluter, nitrification and dephosphorization.

Contact-oxidation pool inside dimension long 2.2m, wide 2.1m, constructional depth 3m.Effective operation depth 2.3m, dischargeable capacity For 10.6m³.System processing flow presses 50-100m³/ d considers that then contact-oxidation pool hydraulic detention time is 2.5-5h.

Microporous aeration device is arranged in contact-oxidation pool bottom, and accomplished continuously or intermittently property can be achieved and be aerated.Addition is soft in the middle part of pond body Property filler, provides for activated sludge and depends on space.Under aeration condition, sewage is sufficiently mixed with air, organisms use oxygen Carry out aerobic metabolism and remove organic substance in sewage, ammonia nitrogen issues raw nitration reaction in aerobic conditions, and polyP bacteria is in aerobic environment It is middle to absorb unnecessary phosphorus, comprehensive purifying sewage.

Aeration time passes through numerical control device automatic running.Run time can be manually set or according to Inlet and outlet water water quality situation Adjust automatically, it is energy consumption minimized to realize that efficiency maximizes.

Contact-oxidation pool intake-outlet is respectively positioned on top, and system is by the way of continuum micromeehanics, continuous effluent.Mix suspending Liquid enters sedimentation in secondary sedimentation tank and removes suspended solid.

Second pond+cistern：

As shown in Figure 9, Figure 10, second pond major function is precipitating sludge, allows sludge reflux or outer row.The main work(of cistern Can be water storage, in order to the normal use of immersible pump.Also provide accommodation space for immersible pump simultaneously.Immersible pump uses sewage pump, Concrete model determines as needed.

The long 1m of second pond inside dimension, wide 1m, constructional depth 3m.Mixing suspension accesses second pond bottom by pipeline and gone out Water, delivery port set hydraulic barrier, it is ensured that sludge can be settled effectively.Supernatant then enters cistern by triangle downflow weir. Effective operation depth of second pond is 2.3m, dischargeable capacity 2.3m³.System processing flow presses 50-100m³/ d considers, then second pond Hydraulic detention time is in 0.6-1.2h.To avoid sludge loss, secondary clarifier effluent end sets screen cloth to prevent bulky grain sludge from entering Cistern.

The long 1m of cistern inside dimension, wide 1m, constructional depth 3m.Bottom installing submersible pump, while level monitoring dress is installed Put, to control water pump start and stop.According to flow, water pump about 20-30min is run once, and according to different model, each run time is about 5 minutes, 24 hour operation time about 2h altogether.

Water pump connecting water pipe, water pipe set check-valves.Landscape wetland is accessed in water pipe one end, completes follow-up advanced treating purification Water outlet afterwards；Sedimentation basin is accessed in one end, completes backflow, intensified anti-nitrated denitrification effect, reduction entering organic matter of water load.Reflux ratio is led to Valve controlling is crossed, is adjusted flexibly according to disengaging water quality situation.

Landscape wetland：

As shown in Figure 11, Figure 12, landscape wetland can utilize the triple of the physics in natural ecosystems, chemistry and biology Synergy, by filtering, adsorbing, coprecipitated, ion exchange, plant absorption and microorganism decomposition realized to the effective net of sewage Change.Meanwhile landscape wetland also has ecoscape function concurrently, local area ambient conditions can be coordinated to make wetland landscape.

Rural area landscape wetland horizontal layout is intended by the way of the series connection of two-stage wet land system.The structure chi of one-level wetland unit It is very little to be：6.2m×6m×1.5m；The physical dimension of two level wetland unit is：6.2m×6m× 0.8m.

One-level wetland unit is the mode of vertical subsurface flow, and top layer is soil horizon, not water breakthrough, plants wetland plant.Water distributor Positioned at wetland bottom, current enter wetland from bottom water distributor, and upward cross flow, it is wet that the apopore reserved by top enters two level Ground unit.By the way of two level wetland unit is flowed using surface.Wetland surface water breakthrough, can arranging in pairs or groups, some are endured water, swum, heavy water plant Thing and fish, small-sized ecoscape is formed, while have purification function concurrently.

The water inlet pipe of one-level wetland unit bottom is intended managing using DN50 UPVC, and two side perforations, perforate spacing 15cm, wears Hole size 10mm.Spacing 0.5m between water distributor.Water distributor can ensure that wetland bottom even is intake, and avoid appearance inside wetland short Stream or predominant current.

One-level wetland unit filler depth 1.2m.Filler arranges five layers altogether：First layer is gravel, 50~100mm of particle diameter, Depth of packing is 30cm, and the layer is water inlet water distribution layer；The second layer is cinder rock, 30~50mm of particle diameter, depth of packing 30cm；The Three layers are fine ash rock, particle diameter 10mm, depth of packing 30cm；4th layer is coarse sand, particle diameter 2mm, depth of packing 20cm, and the layer is Enter water layer；Layer 5 is soil, and predominantly Root of Wetland Plants provides living space, depth of packing 10cm.

Two level wetland unit filler depth 0.4m.Filler is arranged two layers altogether：First layer is gravel, 50~100mm of particle diameter, Depth of packing is 20cm；The second layer is cinder rock, 30~50mm of particle diameter, depth of packing 20cm.Two stage treatment unit major function For Landscape construction, while it can directly reflect water quality condition after treatment.Table 2 is artificial swamp each processing unit filler feelings Condition list；

Table 2

Where the characteristics of plant is artificial swamp, and the most obvious biological characteristic of wet land treating system, it is artificial swamp Chief component.Wetland plant can directly absorb the nutriment in sewage, absorption and an enrichment huge sum of money in systems Category and poisonous and harmful substance, can also provide habitat for microorganism, and can strengthen water conservancy conduction and maintain aeration status, together When, there is ecoaesthetics value.

Wetland plant matches main emergent aquactic plant, floating plant and the class of submerged plant three, wherein swimming and submerged plant master To be applied to two level wetland unit to realize the landscape value of diversification.Preliminary project is as shown in table 3.Table 3 is Manual moist Ground wetland plant matingplan list；

Table 3

Position	Winter scheme (March 11~next year)	Spring and summer autumn scheme (4~October)
			Coagulation unit	Acorus calamus variegatus, iris, rape, Herba Pratiae Nummulariae, cyperus alternifolius	Thaliadeabata, Lythrum salicaria, canna, common calla, rhizoma calami
Two stage treatment unit	Narcissus, rush, Scirpus tabernaemontani, duckweed, hornwort	Reed, Arundo donax, duckweed, hornwort, fish

Plant cultivating spacing is divided into two kinds：Branches and leaves area larger plant 50cm × 50cm, each processing unit (1m × It 3m) can about plant 20 plants；The less plant 30cm × 30cm of branches and leaves area, each processing unit can about plant 50 plants.Plant Thing plantation density answers size and the application of fit module.

The water distribution manner of rural area landscape wetland system is intake to be intermittent.Each group inflow is controlled by water valve.According to design Maximum sewage quantity, wet land system population mean hydraulic detention time is about 8h.

Sewage disposal system horizontal layout：

The occupation of land of domestic sewage of villages and small towns rural area landscape type processing system is mainly rural area landscape wetland treatment facility and its matched somebody with somebody The construction of the structures such as complete equipment room.Designed according to this patent, the horizontal layout of sewage disposal system is generally rectangular shaped.But rural area Landscape wetland system is not limited to concrete shape, can according to implement place orographic condition adjust, can locally with buried life Change preprocessing system to overlap, reduce take up an area to a greater extent.Landscape wetland system and underground biochemical treatment system floor space are about 90-110m²；Supporting comprehensive room floor space is about 2m × 2.5m, 5m², the gross area about 120m², consider appropriate greening and road Road surface is accumulated, and whole system floor space is about 150m², average treatment water per ton (presses 100m³/ d waters calculate) take up an area about 1.0- 1.2m²。

Sewage disposal system elevation arrangement：

Domestic sewage of villages and small towns rural area landscape type processing system mainly considers following principle on elevation arrangement：

Buried biochemical treatment facility must meet relevant specification.Because the system is directed to the sanitary sewage of rural area compact community Process problem, sewage quantity is smaller, is had specific characteristics in structure design.When the dischargeable capacity of each treatment facility should meet effectively to handle Between requirement, while superelevation part should >=0.3m.

Take into full account that current run the caused loss of flood peak in systems.During design, according to previous experiences, each processing is set The loss of flood peak applied determines therefrom that the available depth and structure height of facility in the range of 10~20cm.

It is defined by ground elevation 0.0m, each treatment facility buried depth of basement is substantially：Grid, -1.0m；Sedimentation basin, -3.0m； Anaerobic filter, -3.0m；Contact-oxidation pool, -3.0m；Two heavy and cisterns, -3.0m；Wetland coagulation unit, 1.5m；Wetland Two stage treatment unit 0.8m；Comprehensive room, 2.8m.Whole processing system, structure arrangement depth displacement is 5.8m.

System elevation arrangement scheme can be adjusted according to actual conditions.Table 4 is the guide look of processing system major process unit Table (quantity, dischargeable capacity etc.)；

Table 4

Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement The scope of protection of the utility model is also should be regarded as with retouching.

Claims (10)

1. a kind of domestic sewage of villages and small towns rural area landscape type total system, including buried biochemical preprocessing system and rural area scape See wet land system, it is characterised in that the buried biochemical preprocessing system includes passing sequentially through the connection of nature overflow manner Sewage disposal system water inlet, grid, sedimentation basin, anaerobic filter, anaerobic pond, contact-oxidation pool, second pond, cistern, water storage Pond connects rural area landscape wetland system by water pump, and the rural area landscape wetland system includes the one-level wetland unit being serially connected And two level wetland unit.

2. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that described buried The rectangular setting of formula biochemistry preprocessing system, it is buried or half embedding system.

3. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that the sewage Processing system water inlet connects sewage network or septic tank.

4. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that the grid It is made up of the metal grizzly bar of one group of screen cloth or parallel gate stripe pitch e=10mm, before grid is arranged on sewage disposal system water inlet End, grid mounted angle α=60 °, grid pond inside dimension is long 0.7m, wide 0.6m, high 1.0m, and grid pond is located in sedimentation basin Portion, grid use concrete structure, and bottom and side carry out the processing of antiseepage leakproof Anti-scratching, the effectively interior path length of sedimentation basin 2.2m, wide 2m, constructional depth 3m, sedimentation basin are internally provided with dividing plate.

5. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that the anaerobism Filter tank includes anti-filter unit and anaerobic unit,

Anti-filter unit bottom arranges filler, anti-filter unit inside dimension long 2.2m, wide 1.3m, constructional depth 3m, and bottom arrangement is filled out Expect height 1m, filler is rubble, coarse sand, the biological treatment structures of flyash composition；

Anaerobic unit filling flexible filler, anaerobic unit inside dimension long 2.2m, wide 1.3m, constructional depth 3m, flexible filler cloth Middle part is placed in, is highly 1m.

6. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that the contact Oxidation pond inside dimension long 2.2m, wide 2.1m, constructional depth 3m, effective operation depth 2.3m, dischargeable capacity 10.6m³, contact Microporous aeration device is arranged in oxidation pond bottom, and flexible filler is added in the middle part of pond body.

7. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that in second pond The long 1m of portion's size, wide 1m, constructional depth 3m, mixing suspension access second pond bottom water outlet by pipeline, and delivery port sets folding Baffle plate is flowed, supernatant then enters cistern by triangle downflow weir, and effective operation depth of second pond is 2.3m, dischargeable capacity 2.3m³, secondary clarifier effluent end sets screen cloth；

The long 1m of cistern inside dimension, wide 1m, constructional depth 3m, bottom installing submersible pump and level monitoring device.

8. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that the one-level The physical dimension of wetland unit is：6.2m × 6m × 1.5m, the water inlet pipe of one-level wetland unit bottom are managed using DN50 UPVC, Two side perforations, perforate spacing 15cm, perforation size 10mm, spacing 0.5m, one-level wetland unit filler depth 1.2m between water distributor, Filler arranges five layers altogether：First layer is gravel, and 50~100mm of particle diameter, depth of packing 30cm, the layer is water inlet water distribution layer；The Two layers are cinder rock, 30~50mm of particle diameter, depth of packing 30cm；Third layer is fine ash rock, particle diameter 10mm, and depth of packing is 30cm；4th layer is coarse sand, and particle diameter 2mm, depth of packing 20cm, the layer is into water layer；Layer 5 is soil, for being planted for wetland Thing root system provides living space, depth of packing 10cm；

One-level wetland unit is the mode of vertical subsurface flow, and top layer is soil horizon, plants wetland plant, and water distributor is located at wetland bottom Portion, water distributor are used to make current enter wetland from bottom, upward cross flow, enter two level by apopore reserved above water distributor Wetland unit.

9. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 1, it is characterised in that the two level The physical dimension of wetland unit is：6.2m × 6m × 0.8m, two level wetland unit are the mode of surface stream, and two level wetland unit is filled out Expect depth 0.4m, filler is arranged two layers altogether：First layer is gravel, 50~100mm of particle diameter, depth of packing 20cm；The second layer is Cinder rock, 30~50mm of particle diameter, depth of packing 20cm.

10. domestic sewage of villages and small towns rural area landscape type total system as claimed in claim 8 or 9, it is characterised in that described The wetland plant of one-level wetland unit includes emergent aquactic plant, and the wetland plant of the two level wetland unit includes emergent aquactic plant, floated Water plant and submerged plant.