CN108793593B - Multistage gardens sewage regeneration system that subsides - Google Patents

Abstract

The invention discloses a multistage sedimentation garden sewage regeneration system, which has the technical scheme that: the water treatment device comprises a diversion trench, a sorting pond, a filtering pond, a flocculation pond and a clear water recycling assembly, wherein the sorting pond comprises a slow flow slope which is obliquely and downwards arranged along the length and side walls which are arranged on two sides of the slow flow slope, the lower end of the slow flow slope is provided with a water filtering dam, a first-stage interception net, a second-stage interception net, a third-stage interception net and a fourth-stage interception net which are arranged below the diversion trench are sequentially arranged on the two side walls from top to bottom, and the first-stage interception net, the second-stage interception net, the third-stage interception net and the fourth-stage interception net are arranged on the two side walls; can effectually will be washed by the rainwater through one-level interception net, second grade interception net, tertiary interception net and level four interception net and fall the categorised collection of rubbish for the drainage is through can not blockking up, and can directly utilize after simply handling through the rubbish of one-level interception net, second grade interception net, tertiary interception net and the categorised interception of level four interception net, reduces rubbish recycling's the degree of difficulty.

Description

Multistage gardens sewage regeneration system that subsides

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a multistage sedimentation garden sewage regeneration system.

Background

The ecological garden refers to a garden green land system constructed by taking the ecological principle as guidance, in the system, ecological tribes formed by arbors, shrubs, herbs, vine plants and the like are mutually coordinated in population, have compound levels and appropriate season colors, and plants with different ecological characteristics can obtain their own places, and make full use of sunlight, air, land, nutrients, moisture and the like to form a harmonious, ordered and stable community which is the embodiment of the highest level of urban garden greening work and is the inevitable result of the development of human materials and mental civilization.

In the design process of ecological gardens, sewage treatment is an important project. Often can receive the rainwash in ecological garden to finally collect through sewage treatment system, can often take away some plastic bags, leaf, stone, gravel, silt etc. during the rainwash, these are comparatively difficult when handling.

Chinese patent with grant publication No. CN104310657B discloses a multistage sedimentation garden sewage regeneration system, which comprises a diversion trench, an air blower, a sedimentation treatment tank, an inflatable splint, a first partition plate, a second partition plate and a self-priming pump, wherein the inflatable splint, the first partition plate and the second partition plate are fixed in the sedimentation treatment tank and separate the inner space of the sedimentation treatment tank into a slow flow sedimentation region, a filtration region, a buffer region and a flocculation sedimentation region, the diversion trench is positioned at the upper part of the slow flow sedimentation region and communicated with the upper part of the slow flow sedimentation region, an upward inclined slow flow slope is arranged at the bottom of the slow flow sedimentation region near the inflatable splint side, the inflatable splint is attached to the slow flow slope, a cavity is arranged in the inflatable splint, an inflation tube is arranged in the cavity, the inflation tube passes through the top of the inflatable splint and is connected with an outlet of the air blower positioned outside the slow flow sedimentation region, grid holes are arranged at two sides of the upper part of the inflatable splint, a composite filtration structure is fixed in the filtration region, the position department that first baffle is located composite filter structure below is equipped with the opening, and the upper portion of second baffle is equipped with the overflow pipe, and the export of overflow pipe is located flocculation settling zone lower part, and flocculation settling zone bottom is equipped with the blow off pipe, and the upper portion of flocculation settling zone is equipped with the outlet pipe, the export of outlet pipe links to each other with the import of inhaling the pump certainly, still has in parallel on the outlet pipe to be used for carrying the flocculating agent to the flocculating settling zone's flocculating agent conveying system.

Sewage is collected by a diversion trench and enters a slow flow settling zone, heavier impurities such as stones in the sewage in the slow flow settling zone can sink at the bottom under the action of the blocking of a slow flow slope and the self gravity, the sewage overflows to a filtering zone through grid holes on an inflatable clamping plate, the sewage overflowing from the grid holes and entering the filtering zone passes through a composite filtering structure and then passes through the processes of filtering, adsorbing, decoloring and deodorizing, the filtered sewage enters a buffer zone from a circulation hole at the bottom of the filtering zone, the sewage in the buffer zone flows into a flocculation settling zone through an overflow pipe at the upper part, flocculation settling is carried out under the action of a flocculating agent, and the sewage is finally pumped out by a self-priming pump and then can be used as water for fountain, landscape pool, irrigation and the like in the landscape; however, if the sewage contains floating objects such as plastic bags, leaves or branches which can float on the water surface, the floating objects easily block the grid holes, and even though the floating objects are discharged by the blower, the floating objects quickly block the grid holes again, so that the sewage must be cleaned by the blower frequently, which affects the sedimentation of the sewage.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a multistage sedimentation garden sewage regeneration system which can effectively avoid the effect of blockage caused by floaters such as plastic bags, leaves, branches and the like.

In order to achieve the purpose, the invention provides the following technical scheme:

a multistage sedimentation garden sewage regeneration system comprises a diversion trench, a sorting pond communicated with the diversion trench, a filtering pond communicated with the sorting pond, a flocculation pond communicated with the filtering pond, and a clear water reuse assembly, wherein the sorting pond comprises a slow flow slope arranged downwards along the length slope and side walls arranged on two sides of the slow flow slope, the lower end of the slow flow slope is provided with a water filtering dam, the two side walls are arranged in a step shape, the two side walls are symmetrically arranged with each other, a water outlet of the diversion trench is arranged on the side walls, a first-stage interception net, a second-stage interception net, a third-stage interception net and a fourth-stage interception net below the diversion trench are sequentially arranged on the two side walls from top to bottom, the first-stage interception net comprises a first net frame and a first filter screen fixed in the first net frame, and the first filter screen has the aperture of 5 cm, the second grade interception net includes the second net frame and is fixed in the second net frame and the second filter screen that the aperture is 2 centimetres, the tertiary interception net includes the third net frame and is fixed in the third net frame and the third filter screen that the aperture is 0.3 centimetres, the level four interception net includes the fourth net frame and is fixed in the fourth net frame and the fourth filter screen that the aperture is 0.05 centimetres, the length of first net frame, second net frame, third net frame and fourth net frame increases in proper order.

According to the arrangement, when sewage in gardens flows into the diversion ditch through drainage pipelines such as underground sewage pipelines and ditches and flows out through the diversion ditch, the sewage mainly comprises rainwater and tap water for cleaning, plastic bottles, plastic bags, leaves, branches, stones, gravels, silt and the like which are partially washed down by the rainwater are arranged in the sewage, when the sewage is washed out of the diversion hook, the sewage sequentially passes through the primary interception net, the secondary interception net, the tertiary interception net and the quaternary interception net, objects with large volumes such as the plastic bottles, the plastic bags and the branches are firstly intercepted by the first filter screen with the aperture of 5 cm, the objects are collected and then can be used as solid fuel after the processes of drying, crushing and the like, the objects with moderate volumes such as the stones, the leaves and the like are intercepted by the second filter screen with the aperture of 2 cm, and the objects can be reused for garden pavement construction after being dried, the less gravel of volume, objects such as saw-dust can be intercepted by the third filter screen that the aperture is 0.3 centimetre, this part object is through drying, can regard as gardens retrieval and utilization soil to use after technologies such as compost processing, small grains of sand and dust can be intercepted by the fourth filter screen that the aperture is 0.05 centimetre, this part object can be used for the gardens road surface, construction usefulness such as wall body, inside can not containing floater and the great object of volume through the sewage after filtering, consequently can not lead to the jam to the drainage dam, and gentle flow slope sets up downwards makes it have the effect of guide sewage stream to the filtering ponds, can effectively avoid sewage to remain and lead to taking place the foul advantage in the sorting ponds.

Further setting: each side of first filter screen, second filter screen, third filter screen and fourth filter screen all is provided with many rings, each side of first net frame, second net frame, third net frame and fourth net frame all is provided with many trips, each the equal joint of ring is on each trip.

So set up, make first filter screen, the second filter screen, third filter screen and fourth filter screen can be quick installation and dismantlement through the simple joint relation between ring and the trip for can directly renew the first filter screen of new when clearing up the rubbish of one-level interception net, the second grade interception net, tertiary interception net and level four interception net interception, the second filter screen, third filter screen and fourth filter screen are on original first net frame, the second net frame, third net frame and fourth net frame, thereby reach material saving's effect.

Further setting: be provided with the protruding group that the multirow perpendicular to unhurried current slope length direction set up on the unhurried current slope, each row of protruding group all includes three archs, and crisscross setting each other between the two rows of archs of adjacent setting, plant the grass class plant in the arch.

So set up, inside still can contain some tiny silt through sewage after one-level interception net, second grade interception net, tertiary interception net and the interception of level four interception net, can play certain interception effect to these tiny silt through set up the arch on the slow current slope, and the silt that the interception got off can be piled up in the arch, and these silt contain certain organic matter, can regard as the nourishment of tongue fur class plant to use.

Further setting: the water filtering dam is provided with a plurality of water drainage channels communicated with the filtering pool, the water drainage channels are arranged on the surface of the slow flow slope, two ends of the water filtering dam are fixed with two side walls respectively, and the height of the water filtering dam is 120 cm.

So set up, when being in rainy season and leading to sewage too much, the drainage dam has certain interception effect, increases the dwell time of sewage in the sorting pond for sewage can increase the time with the air contact, reaches abundant aerated effect, and just need not have too much aeration time when sewage is less, consequently can directly flow into in the filtering pond through hydrophobic passageway.

Further setting: be provided with the compound filtering mechanism who is in hydrophobic passageway horizontal plane below in the filtering ponds, compound filtering mechanism includes bottom plate, quartz sand layer, activated carbon layer, quartz sand layer and the fibre web layer that from the bottom up set gradually, it has the grass class plant to plant in the fibre web layer, be provided with the multichannel through-hole on the bottom plate.

So set up, sewage after handling through the sorting pond can directly fall to compound filter mechanism when passing through the inflow filter tank from the drainage in to pass fibre web layer in proper order, quartz sand layer, activated carbon layer, quartz sand layer and bottom plate, finally fall into the filter tank in, this part sewage still can have certain silt, these silt can be planted usefulness as the tongue class through fibre web layer, thereby the sewage that infiltrates into compound filter mechanism can purify the clear water that becomes reuse through quartz sand layer and activated carbon layer.

Further setting: the bottom upper surface of the filtering tank is obliquely and downwards arranged, and one end of the filtering tank, which is far away from the sorting tank, is provided with a water outlet channel which is communicated with the flocculation tank and is arranged on the upper surface of the bottom of the filtering tank.

So set up, the slope of filtering ponds bottom upper surface is provided with downwards and helps in the direct flow of clear water that produces in the flocculation basin behind the purification treatment of composite filter mechanism, reaches the advantage of avoiding remaining clear water in the filtering ponds.

Further setting: the top surface level of flocculation basin bottom sets up, the bottom surface height in flocculation basin is less than outlet channel's level, be provided with the dosing machine that is used for to the flocculating agent of intermittent type nature injection in the flocculation basin on the flocculation basin.

So set up, through dosing machine intermittent type nature injection flocculating agent in to the flocculation basin for remaining impurity can be cleared up out once more in the clear water, makes the clear water can directly be used for wasing or watering usefulness.

Further setting: all be equipped with the bearing frame on the flocculation basin both sides, two be equipped with the pivot on the bearing frame, be equipped with the cylinder in the pivot, evenly arranged the blade on the cylinder outer wall, the pivot is passed through motor intermittent type nature drive and is rotated.

So set up, can drive the blade through the motor and rotate after putting in the flocculating agent to reach and carry out the effect of stirring to the clear water that is in the flocculation basin, make the combination between flocculating agent and the clear water more abundant.

Further setting: clear water retrieval and utilization subassembly is including setting up first self priming pump, second self priming pump on the flocculation tank, first outlet pipe and the second outlet pipe that sets up with second self priming pump intercommunication that sets up with first self priming pump intercommunication, the one end that the flocculation tank was stretched into to first outlet pipe is located the flocculation tank bottom surface, the one end that the second outlet pipe stretched into the flocculation tank is 10 centimetres with the interval between the flocculation tank bottom upper surface.

So set up, can take out the supernatant fluid that is through flocculation treatment through the second exit tube and use with water such as fountain, view pond, watering in the landscape, can take out the lower floor clear water that contains the flocculation thing through first outlet pipe and use it.

Compared with the prior art, the invention adopts the technical scheme that: can effectually will be washed by the rainwater through one-level interception net, second grade interception net, tertiary interception net and level four interception net and fall the categorised collection of rubbish for the drainage is through can not blockking up, and can directly utilize after simply handling through the rubbish of one-level interception net, second grade interception net, tertiary interception net and the categorised interception of level four interception net, reduces rubbish recycling's the degree of difficulty.

Drawings

FIG. 1 is a schematic structural diagram of a multistage sedimentation garden sewage regeneration system;

FIG. 2 is a schematic structural diagram of a sorting tank of the multi-stage sedimentation garden sewage regeneration system;

FIG. 3 is a schematic structural diagram of a first-stage interception net, a second-stage interception net, a third-stage interception net and a fourth-stage interception net of the multi-stage sedimentation garden sewage regeneration system;

FIG. 4 is an enlarged view of part A of FIG. 3;

FIG. 5 is a schematic structural diagram of a convex group of the multi-stage sedimentation garden sewage regeneration system;

FIG. 6 is a schematic structural diagram of a filtering tank of the multi-stage sedimentation garden sewage regeneration system;

FIG. 7 is an enlarged view of part B of FIG. 6;

fig. 8 is a schematic structural diagram of a flocculation tank of the multi-stage sedimentation garden sewage regeneration system.

In the figure: 1. a gutter; 2. a sorting pool; 21. a slow flow slope; 22. a side wall; 23. a water filtering dam; 231. a hydrophobic channel; 24. a first-level interception net; 241. a first frame; 242. a first filter screen; 25. a secondary interception net; 251. a second frame; 252. a second filter screen; 26. a third-level interception net; 261. a third screen frame; 262. a third filter screen; 263. a circular ring; 264. a hook is clamped; 27. a four-stage interception net; 271. a fourth screen frame; 272. a fourth filter screen; 28. a set of bumps; 281. a protrusion; 3. a filtration tank; 31. a composite filtering mechanism; 311. a base plate; 312. a through hole; 313. a quartz sand layer; 314. an activated carbon layer; 315. a fibrous web layer; 32. a water outlet channel; 4. a flocculation tank; 41. a bearing seat; 42. a rotating shaft; 43. a drum; 44. a blade; 45. a motor; 46. a dosing machine; 5. a clean water recycling component; 51. a first self-priming pump; 511. a first water outlet pipe; 52. a second self-priming pump; 521. and a second water outlet pipe.

Detailed Description

The multistage sedimentation garden sewage regeneration system is further described with reference to fig. 1 to 8.

A multi-stage sedimentation garden sewage regeneration system is shown in figure 1 and comprises a sorting pond 2, a filtering pond 3 and a flocculation pond 4, wherein the sorting pond 2 is used for sorting and collecting garbage washed by rainwater, the filtering pond 3 is communicated with the sorting pond 2 and is used for filtering and purifying enough sewage after garbage sorting, and the flocculation pond 4 is communicated with the filtering pond 3 and is used for flocculating and settling purified clear water; wherein, the sorting pond 2 is provided with a diversion ditch 1 for collecting sewage collected in drainage pipelines such as underground sewage pipelines and ditches in a communicating way, and the flocculation pond 4 is provided with a clear water recycling component 5 for collecting and recycling clear water after flocculation sedimentation.

Further optimize, the bottom upper surface slope of sorting pond 2 and filtering ponds 3 sets up downwards, the bottom upper surface level of flocculation basin 4 sets up, the bottom upper surface slope direction of sorting pond 2 and filtering ponds 3 is unanimous, and filtering ponds 3 set up in the side of inclining downwards of sorting pond 2 bottom upper surface, flocculation basin 4 sets up in the slope side lower extreme of filtering ponds 3, wherein, the bottom upper surface of flocculation basin 4 is less than the minimum height of filtering ponds 3 bottom upper surface, the highest position of filtering ponds 3 bottom upper surface is less than the lowest position of sorting ponds 2 bottom upper surface.

Set up in drainage pipes such as gardens, park underground concealed conduit, underground sewer line and irrigation canals and ditches through 1 intercommunication of diversion ditch for when raining, the rainwater can directly converge to diversion ditch 1 in, and be used for in gardens and the park to wash the running water of usefulness such as chair also can converge to diversion ditch 1 in through drainage pipes such as concealed conduit, and finally discharge to sorting in the pond 2 through diversion ditch 1. Gardens the inside trees flowers and plants are more, can appear the lopping often when vegetation, the bark that drops, saw-dust and grass bits etc. and also can blow article such as plastic bottle and the plastic bag that some weight are lighter when blowing, when ordinary weather, these objects can be unified to be cleaned the collection by sanitation personnel, but when raining, these objects can be by in the rainwater erodees to all kinds of drainage pipe to along with 1 flows to sorting pond 2 in of diversion ditch, finally by sorting pond 2 categorised collections. The sewage of being kept apart out rubbish can be directly filtered and purify in 2 slope bottom upper surface flows to filtering ponds 3 along sorting pond for sewage is through filtering, adsorb, the decoloration and remove the flavor process and become comparatively clear water, the clear water can continue to take place the flocculation sedimentation effect in slope bottom upper surface flow to flocculation basin 4 along filtering ponds 3, make the clear water can divide into the turbid liquid that upper clear liquid and lower floor contain the flocculation thing, finally utilize through 5 categorised collections of clear water retrieval and utilization.

As shown in fig. 2, the sorting pond 2 comprises a slow flow slope 21 which is arranged along the length direction in a downward inclined manner, side walls 22 which are symmetrically arranged at two sides of the slow flow slope 21, and water filtering dams 23 which are arranged at the lower end of the inclined plane of the sorting pond 2 and are respectively fixed at two ends on the two side walls 22, wherein the two side walls 22 are arranged in a ladder shape, and a primary intercepting net 24 which is sequentially clamped on each ladder surface of the two side walls 22 and is used for intercepting large objects such as plastic bottles, plastic bags and branches is arranged between the two side walls 22; a secondary intercepting net 25 for intercepting the objects with moderate volume, such as stones, leaves, and the like; a third grade intercepting net 26 for intercepting small-sized gravel, wood chips and other objects; and a fourth-stage intercepting net 27 for intercepting sand and dust of smaller volume; wherein, the upper surface of the bottom of the sorting pond 2 is the upper surface of the slow flow slope 21.

Wherein, a plurality of drainage channels 231 which are arranged on the upper surface of the slow flow slope 21 and are used for communicating the sorting pond 2 with the filtering pond 3 are arranged on the water filtering dam 23, and the height of the water filtering dam 23 is 120 cm.

Referring to fig. 2 and 3, the first-stage interception net 24 includes a first frame 241 and a first screen 242 fixed in the first frame 241 and having a 5 cm-diameter aperture, the second-stage interception net 25 includes a second frame 251 and a second screen 252 fixed in the second frame 251 and having a 2 cm-diameter aperture, the third-stage interception net 26 includes a third frame 261 and a third screen 262 fixed in the third frame 261 and having a 0.3 cm-diameter aperture, and the fourth-stage interception net 27 includes a fourth frame 271 and a fourth screen 272 fixed in the fourth frame 271 and having a 0.05 cm-diameter aperture.

The existing plastic bags, plastic bottles and broken branches generally have large surface areas or long lengths, and most of objects such as the plastic bags, the plastic bottles and the branches can be basically intercepted by the first filter screen 242 with the aperture of 5 cm; the existing stones for garden construction are generally cobblestones and broken bricks with attractive appearance, leaves are generally dead leaves or common leaves blown off by wind, the volume is moderate, and the stones can be intercepted by a second filter screen 252 with the aperture of 2 cm; the existing gravel for garden construction is generally perlite for preventing soil hardening, and the wood chips are barks or broken branches of some trees, are slightly small in volume and can be intercepted by a third filter screen 262 with the aperture of 0.3 cm; soil is from taking in the gardens for current grit and dust part, and the part carries for the visitor in addition, and the volume is less, can intercept through the fourth filter screen 272 that the aperture is 0.05 centimetres, and remaining tiny dust directly falls on the gentle slope 21 along with sewage and flows to in the filtering ponds 3, but the too little dust of volume can not cause the jam to hydrophobic passageway 231.

And except that the water filtering dam 23 plays a role in communicating the sorting pond 2 and the filtering pond 3 so that sewage can flow into the filtering pond 3 from the sorting pond 2, the effect of relieving overlarge sewage flow can be played, when the rainfall is overlarge, the flow of the sewage can be increased accordingly, and a large amount of organic matters and microorganisms can be contained in the sewage, a certain interception effect can be played on the sewage through the water filtering dam 23, so that the sewage can stay in the sorting pond 2 for a certain time, so that the contact time between the sewage and air can be prolonged, the certain size of the hydrophobic channel 231 has a certain flow limiting effect, the amount of the sewage flowing out of the hydrophobic channel 231 is small, the organic matters and the microorganisms in the sewage can be combined with the air, and the microorganisms have an oxidative decomposition effect on the organic matters in the sewage under the condition of sufficient dissolved oxygen.

Referring to fig. 3 and 4, the lengths of the first frame 241, the second frame 251, the third frame 261 and the fourth frame 271 are sequentially increased, a plurality of circular rings 263 are disposed on each side of the first filter screen 242, the second filter screen 252, the third filter screen 262 and the fourth filter screen 272, a plurality of hooks 264 are disposed on each side of the first frame 241, the second frame 251, the third frame 261 and the fourth frame 271, and the circular rings 263 are respectively connected to the hooks 264 in a clamping manner.

When the objects intercepted by the first filter screen 242, the second filter screen 252, the third filter screen 262 and the fourth filter screen 272 reach a certain limit, the objects should be cleaned in time, and during cleaning, only the circular rings 263 need to be taken out from the hooks 264, and then the new first filter screen 242, the new second filter screen 252, the new third filter screen 262 and the new fourth filter screen 272 are replaced on the original first frame 241, the original second frame 251, the new third frame 261 and the new fourth frame 271.

It should be noted that the first filter screen 242, the second filter screen 252, the third filter screen 262 and the fourth filter screen 272 may be made of polyethylene material, and have light weight, moderate strength, and low cost, and are not easy to rot when being soaked in water, and can be directly replaced when damaged.

Referring to fig. 2 and 5, a plurality of sets of protrusions 28 are disposed on the water filtering dam 23 and are perpendicular to the length direction of the slow flow slope 21, each set of protrusions 28 includes three protrusions 281 perpendicular to the length direction of the slow flow slope 21, two adjacent rows of protrusions 281 are arranged in a staggered manner, and moss plants can be planted in each protrusion 281.

The sewage intercepted and filtered by the first-level intercepting net 24, the second-level intercepting net 25, the third-level intercepting net 26 and the fourth-level intercepting net 27 still contains a certain amount of dust, a large amount of organic matters and microorganisms, the sewage flows through the protrusions 281 when flowing down along the gentle flow slope 21, and part of the dust, the organic matters and the microorganisms are intercepted by the protrusions 281, so that a certain amount of the dust, the organic matters and the microorganisms are accumulated on the protrusions 281, the part of the dust, the organic matters and the microorganisms are condensed on the protrusions 281 when the sewage is dried, and the moss plants planted on the protrusions 281 can extract nutrients required for growth from the moss plants.

Referring to fig. 1 and 6, a composite filtering mechanism 31 for filtering and purifying sewage is disposed in the filtering tank 3, a water outlet channel 32 is disposed on the upper surface of the bottom of the filtering tank 3 at an end of the filtering tank 3 away from the sorting tank 2, and the composite filtering mechanism 31 is disposed between the water drainage channel 231 and the water outlet channel 32.

As shown in fig. 6 and 7, the composite filter mechanism 31 includes a fiber web layer 315 disposed in sequence from top to bottom for intercepting again dust, organic matter and microorganisms contained in the sewage; a quartz sand layer 313, an activated carbon layer 314 and a quartz sand layer 313 which are used for intercepting and removing suspended matters, organic matters, colloidal particles, microorganisms, chlorine, odor, partial heavy metal ions and the like in water are sequentially arranged; and a bottom plate 311 for supporting, wherein the fiber net layer 315 is planted with moss, and the bottom plate 311 is provided with a plurality of through holes 312 for purified rainwater to pass through.

When sewage directly falls into filtering ponds 3 through hydrophobic channel 231, sewage can fall onto composite filter mechanism 31 at first, remaining dust in the sewage, organic matter and microorganism can further be intercepted by fibre web layer 315 for planting the grass species vegetation usefulness in fibre web layer 315, sewage after preliminary filtration can continue to flow through quartz sand layer 313, activated carbon layer 314 and quartz sand layer 313, thereby reach the effect of filtering, absorption, decoloration and flavor removal, make sewage can become comparatively clean clear water, and flow to filtering ponds 3 bottom through bottom plate 311's through-hole 312, the clear water that flows out flows to flocculating tank 4 along setting up the water outlet channel 32 in filtering ponds 3 bottom at last.

As shown in fig. 1 and 8, a dosing machine 46 for intermittently injecting a flocculating agent into the flocculation tank 4 and a stirring mechanism for intermittently stirring the clear water in the flocculation tank 4 are arranged on the flocculation tank 4; wherein, the stirring mechanism comprises bearing seats 41 arranged on both sides of the flocculation tank 4, a rotating shaft 42 arranged between the two bearing seats 41, a roller 43 fixed on the rotating shaft 42 and blades 44 evenly distributed on the outer wall of the roller 43, and the rotating shaft 42 is driven to rotate intermittently by a motor 45.

After the flocculation tank 4 is filled with a certain amount of water, a certain amount of flocculating agent is injected into the flocculation tank 4 through the dosing machine 46 so that the clear water in the flocculation tank 4 is flocculated and settled under the action of the flocculating agent, and when the dosing machine 46 works, the rotating shaft 42 is controlled to rotate through the motor 45, so that the blades 44 stir the clear water to ensure that the clear water can be more fully combined with the flocculating agent.

As shown in fig. 8, clear water retrieval and utilization subassembly 5 is including setting up first self priming pump 51, second self priming pump 52 on flocculation basin 4, first outlet pipe 511 that sets up with first self priming pump 51 intercommunication and the second outlet pipe 521 that sets up with second self priming pump 52 intercommunication, and wherein, the one end that first outlet pipe 511 stretched into flocculation basin 4 is on flocculation basin 4 bottom upper surface, and the interval that the one end that second outlet pipe 521 stretched into flocculation basin 4 and flocculation basin 4 bottom upper surface is 10 centimetres.

After the flocculation and sedimentation of the clear water are finished, the clear water is divided into upper clear liquid and lower turbid liquid in the flocculation tank 4, the second self-priming pump 52 is started firstly to enable the second water outlet pipe 521 to extract the upper clear liquid, and the extracted clear liquid can be directly used as water for fountain, landscape pool, irrigation, cleaning and the like in the garden landscape; after the supernatant is extracted, the lower turbid liquid can be extracted from the second water outlet pipe 521 by the first self-priming pump 51, and the extracted turbid liquid can be directly sent to a sewage treatment plant for simple treatment.

The working principle is as follows: firstly, collect the sewage that gardens drainage channel collected through leading ditch 1 and discharge to in sorting pond 2, sort the object that the naked eye that contains in the sewage according to the volume size through sorting pond 2, sewage after the letter sorting processing can continue to be discharged and carry out filtration purification in filtering ponds 3, make sewage become relatively clean clear water, the clear water can continue to be discharged and carry out the flocculation and subside in flocculation basin 4, make and remove colloid and the suspended particles that are formed by insoluble material in the clear water, get rid of simultaneously that aquatic poisonous organic matter, heavy metal, pathogenic microorganism and radioactive substance so that the clear water can divide into supernatant and lower floor turbid liquid, at last separately collect utilization or handle.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (7)

1. The utility model provides a multistage gardens sewage regeneration system that subsides which characterized in that: comprises a diversion trench (1), a sorting pond (2) communicated with the diversion trench (1), a filtering pond (3) communicated with the sorting pond (2), a flocculation pond (4) communicated with the filtering pond (3) and a clear water recycling component (5), wherein the sorting pond (2) comprises a slow flow slope (21) which is arranged downwards along the length slope and side walls (22) arranged on two sides of the slow flow slope (21), the lower end of the slow flow slope (21) is provided with a water filtering dam (23), the two side walls (22) are arranged in a ladder shape, the two side walls (22) are symmetrically arranged with each other, a water outlet of the diversion trench (1) is arranged on the side walls (22), and a first-level intercepting net (24), a second-level intercepting net (25), a third-level intercepting net (26) and a fourth-level intercepting net (27) which are arranged below the diversion trench (1) are sequentially arranged on the two side walls (22) from top to bottom, the first-level interception net (24), the second-level interception net (25), the third-level interception net (26) and the fourth-level interception net (27) are respectively connected with the step surfaces of the two side walls (22) in a clamping manner, the first-level interception net (24) comprises a first net frame (241) and a first filter screen 242 which is fixed in the first net frame (241) and has a pore diameter of 5 cm, the second-level interception net (25) comprises a second net frame (251) and a second filter screen 252 which is fixed in the second net frame (251) and has a pore diameter of 2 cm, the third-level interception net (26) comprises a third net frame (261) and a third filter screen (262) which is fixed in the third net frame (261) and has a pore diameter of 0.3 cm, the fourth-level interception net (27) comprises a fourth net frame (271) and a fourth filter screen (272) which is fixed in the fourth net frame (271) and has a pore diameter of 0.05), and the lengths of the first net frame (241), the second net frame (251), the third net frame (261) and the fourth net frame (271) are sequentially increased, be provided with the protruding group (28) that the multirow perpendicular to gentle flow slope (21) length direction set up on gentle flow slope (21), each row of protruding group (28) all includes three arch (281), and crisscross setting each other between two rows of protruding (281) of adjacent setting, it has grass class plant to plant in protruding (281), each side of first filter screen (242), second filter screen (252), third filter screen (262) and fourth filter screen (272) all is provided with many rings (263), each side of first screen frame (241), second screen frame (251), third screen frame (261) and fourth screen frame (271) all is provided with many trips (264), each the ring (263) all joint on each trip (264).

2. The multi-stage settling garden sewage regeneration system of claim 1, wherein: be provided with on water filtering dam (23) drainage channel (231) that multichannel and filtering ponds (3) intercommunication set up, drainage channel (231) set up on gentle class slope (21) surface, water filtering dam (23) both ends are together fixed with both sides wall (22) respectively, water filtering dam (23) highly is 120 centimetres.

3. The multi-stage settling garden sewage regeneration system of claim 2, wherein: be provided with in filtering ponds (3) and be in compound filtering mechanism (31) of the horizontal plane below of hydrophobic channel (231), compound filtering mechanism (31) include bottom plate (311), quartz sand layer (313), activated carbon layer (314), quartz sand layer (313) and fibre web layer (315) that from the bottom up set gradually, plant moss class plant in fibre web layer (315), be provided with multichannel through-hole (312) on bottom plate (311).

4. The multi-stage settling garden sewage regeneration system of claim 1, wherein: the upper surface of the bottom of the filtering tank (3) is obliquely and downwards arranged, and one end, away from the sorting tank (2), of the filtering tank (3) is provided with a water outlet channel (32) which is communicated with the flocculation tank (4) and is arranged on the upper surface of the bottom of the filtering tank (3).

5. The multi-stage settling garden sewage regeneration system of claim 4, wherein: the bottom upper surface level of flocculation basin (4) sets up, the bottom height of flocculation basin (4) is less than the level of exhalant canal (32), be provided with on flocculation basin (4) and be used for injecting into dosing machine (46) of flocculating agent to flocculation basin (4) intermittent type nature.

6. The multi-stage settling garden sewage regeneration system of claim 4, wherein: all be equipped with bearing frame (41), two on flocculation basin (4) both sides be equipped with pivot (42) on bearing frame (41), be equipped with cylinder (43) on pivot (42), evenly arranged blade (44) on cylinder (43) outer wall, motor (45) intermittent type nature drive rotation is passed through in pivot (42).

7. The multi-stage settling garden sewage regeneration system of claim 5, wherein: clear water retrieval and utilization subassembly (5) including set up first self priming pump (51), second self priming pump (52) on flocculation basin (4), first outlet pipe (511) that set up with first self priming pump (51) intercommunication and second outlet pipe (521) that set up with second self priming pump (52) intercommunication, the one end that first outlet pipe (511) stretched into flocculation basin (4) is in flocculation basin (4) bottom surface on, second outlet pipe (521) stretch into the one end of flocculation basin (4) and the interval between flocculation basin (4) bottom upper surface is 10 centimetres.

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