CN102020399B - U-shaped overflow soil filtration treatment device for domestic sewage - Google Patents
U-shaped overflow soil filtration treatment device for domestic sewage Download PDFInfo
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- CN102020399B CN102020399B CN201010588955A CN201010588955A CN102020399B CN 102020399 B CN102020399 B CN 102020399B CN 201010588955 A CN201010588955 A CN 201010588955A CN 201010588955 A CN201010588955 A CN 201010588955A CN 102020399 B CN102020399 B CN 102020399B
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Abstract
The invention discloses a U-shaped overflow soil filtration treatment device for domestic sewage. A water outlet of a sewage pretreatment subsystem is connected to a water inlet of a soil filtration treatment subsystem through an intersystem water distributing main pipe; a sewage pipeline is connected with a water inflow trash blocking device, an anaerobic hydrolysis fluidized bed and a sedimentation tank in turn, and a digestion tank is connected with a domestic sewage pipeline and a screen well; a front end of an oil separation tank is connected with a kitchen sewage pipe, while the rear end is connected with the screen well through a sewage pipe; the screen well is connected with the anaerobic hydrolysis fluidized bed; the water distributing main pipe is connected with a perforated water distributing branch pipe; a branch pipe is arranged at the water inlet to connect a lower carbon source supply main pipe; a carbon source supply control valve is arranged on the carbon source supply main pipe; and the carbon source supply main pipe is connected with carbon source supply branch pipes through a tee joint. The device has good pollutant treatment effect, is easy to operate and maintain, effectively purifies the domestic sewage, is compact and simple in structure, flexible in operation and small in occupied area, and is widely applied to projects.
Description
Technical field
The present invention relates to a kind of technical field of water pollution control, more specifically relate to a kind of sewage U type overflow type soil filtration treatment unit, this device comprises sewage preprocessing subsystem and soil filtration processing subsystem, is applicable to the processing of dispersion type domestic wastewater.
Background technology
Along with population increases, urbanization process is accelerated and industrial point-source pollution overall control measure is carried out, the resident living pollution will replace industrial pollution gradually becomes the water body first pollution factor.The densely populated zone in the urban district is improved pipe network and is collected fraction of coverage, and the lifting sewage ability of focusing on is undoubtedly correct choice, but concentrates WWT can not solve the peripheral no pipe network coverage area water environment pollution problem in urban district.And in the exurb, concentrated pipe network can't be led to, even can extend with main roads, adapter expense and long-distance sewage pumping station are carried, working cost is all very high, and the unit cost of sewage disposal also improves greatly.At present, the Rural areas takes waste water before residence, to ooze down naturally in the soil behind the residence more, and ight soil is stored in the easy means of on-the-spot disposal in the various manure pit, serious environment pollution.Therefore in small towns and Rural areas, just pressing for and developing a kind of effective low-cost dispersed wastewater treatment technology away from the city.
The soil filtration treatment system is a kind of sewerage ecological engineering treatment technology of artificial-strengthening; It makes full use of the soil animal that perches in the soil below the face of land, soil microorganisms, physics that root system of plant and soil had, chemical property with sewage purification, belongs to small-sized polluted water land treatment system.
Abroad, soil filtration technology promptly is applied in the Japan of the seventies, and the Niimi of Japan and Masaaki develop the soil hollow billet in the eighties in 20th century and soak into the ditch sewage purification process.Developed countries such as U.S.A, method, moral, Israel are also all carrying out and the relevant soil treatment process of soil filtration technology energetically, and the rural area of the U.S. nearly 36% and the fragmentary home dwelling that disperses to build have adopted this type of technical finesse sewage.In China, from the beginning of the nineties, it particularly receives increasing concern in the dispersed wastewater Application on Treatment in WWT.
In recent years, extensive studies has been carried out in aspects such as domestic and international filling medium to the soil filtration system, pollutant purification mechanism, regulate and control operation, but present soil filtration system ubiquity hydraulic load is on the low side, be prone to obstruction, the inefficient problem of denitrogenation dephosphorizing.
Summary of the invention
The objective of the invention is to be to provide a kind of sewage U type overflow type soil filtration treatment unit, it is even that the present invention has the sewage water distribution, and Pollutant Treatment is effective; Running maintenance is simple; Sewage is carried out effective purifying treatment, and compact construction is simple, flexible operation; Floor space is little, is expected in engineering practice, to be widely used.
In order to realize above-mentioned purpose, the present invention adopts following technical scheme:
A kind of sewage U type overflow type soil filtration treatment unit, this device comprises sewage preprocessing subsystem and soil filtration processing subsystem, the water outlet of sewage preprocessing subsystem is responsible for the water-in that inserts the soil filtration processing subsystem through water distribution between system.Said pretreatment system for sewage comprises that mainly into water blocks dirty device, anaerobic hydrolysis fluidized-bed, settling tank; Sewer line blocks dirty device, anaerobic hydrolysis fluidized-bed, settling tank with water inlet successively and is connected, and said water inlet is blocked dirty device and blocked dirty module by three and constitute, and promptly septic tank, oil trap, grille well constitute; The septic tank front end connects sanitary sewer; The rear end connects grille well, termination kitchen waste water pipe before the oil trap, and the rear end connects grille well; The grille well front end connects septic tank and oil trap through waste pipe, and the rear end connects the anaerobic hydrolysis fluidized-bed.Described anaerobic hydrolysis fluidized-bed is provided with six anaerobic hydrolysis modules; The first anaerobic hydrolysis module front end links to each other with the grille well rising pipe through waste pipe, and the first anaerobic hydrolysis module rear end links to each other with the second anaerobic hydrolysis module; Remaining anaerobic hydrolysis module order of connection is followed successively by: the second anaerobic hydrolysis module rear end is connected with the 3rd anaerobic hydrolysis module; The 3rd anaerobic hydrolysis module is connected with the 4th anaerobic hydrolysis module; The 4th anaerobic hydrolysis module is connected with the 5th anaerobic hydrolysis module; The 5th anaerobic hydrolysis module is connected with the 6th anaerobic hydrolysis module; Be provided with lift pump in the 6th anaerobic hydrolysis module, sewage be promoted in the settling tank through waste pipe.Each anaerobic hydrolysis module is being filled the carrier that particle diameter is little, specific surface area is big, and carrier is in fluidized state, and whole reactor keeps anaerobism.Said settling tank is made up of water-in, water outlet, perforated wall and four parts of sludge bucket.Sewage is by first lattice of water-in entering settling tank, and the mud that the pollutent after hydrolysis forms sinks in the sludge bucket, and the water distributing pore on the sewage perforated wall flows in second lattice, and the water outlet by top flows out again.Described soil filtration processing subsystem comprises inlet well, soil filtration bed of packings, wet well.Described soil filtration bed of packings has from top to down: plant, backfill plantation soil layer, overflow water dispensing apparatus, improve the soil layer, sand filter blanket, impervious barrier.Said plant is generally cash crop, and like cotton, vegetables etc. should not be planted large-scale tree and paddy rice.Described overflow water dispensing apparatus comprises U type cloth tank, composite water-proof geomembrane, U-PVC perforation water distributor, gravel.The overflow water dispensing apparatus is positioned at the following 30cm degree of depth in surface of soil filtration bed, and building mode is: in the improvement soil layer, dig out the water distribution french drain, lay the composite water-proof geomembrane above, place U-PVC perforation water distributor on the geomembrane, fill gravel all around.Sewage oozes out from water distributing pore through the capillary siphoning of gravel, slowly rise and to around the filler diffusion.Said impervious barrier adopts the thick C25 plain concrete of 10cm, lays the blotter of 15cm below, and soil filtration bed of packings pond pool wall is a brick masonry structure, and bilayer is wiped one's face.Prevent like this to ooze under the sewage and cause phreatic pollution.Described wet well comprises: water level management elbow, rising pipe.Dissolved oxygen source is a photosynthesis of plants and oxygen and the water surface regeneration function of carrying under one's arms in the release of oxygen, the water inlet obtained oxygen through root system in the system.The capillary action of the oxygen therapy effect of root system of plant and the improvement soil layer system that makes forms aerobic zone, aerobic area and anaerobic zone.
A kind of sewage U type overflow type soil filtration treatment unit tubing system comprises the water distribution person in charge, perforation water distribution branch pipe, carbon source replenishment control valve, the additional pipe of carbon source, receives water pipe, U type cloth tank, water level management elbow.The function of each pipeline with annexation is: water distribution is responsible for the perforation water distribution branch pipe and is linked to each other; Water distribution is responsible in sewage transport to the soil filtration bed of packings; The perforation water distributor is in U type cloth tank; Sewage overflow goes out U type groove and is evenly arranged in the soil filler, can deepen the filter depth of soil filler like this, increases the clearance of pollutent in the sewage.In water inlet place a pipe coupling lower floor carbon source supply being set is responsible for; Carbon source replenishment control valve replenishes pipe in carbon source and is responsible for; Carbon source is replenished to be responsible for through threeway and the additional arm of carbon source and is linked to each other; Carbon source is replenished on the arm and is distributed with posticum, and the nutritive medium that contains carbon source can replenish pipe through carbon source and get in the soil filtration layer, in order to regulate the C/N ratio in the sewage.The receipts water pipe is arranged in the bottom of soil packing layer, feeds wet well, and the water level management elbow is arranged in wet well, links to each other with the receipts water pipe.Rising pipe is positioned at the wet well bottom, and an end is arranged in wet well, and the other end inserts in the outside water body, and water outlet overflows from the water level management elbow, gets in the wet well, is entered in the outside water body by rising pipe.
Septic tank effluent gets into the anaerobic hydrolysis fluidized-bed after debris retaining; Reclaimed water imports the anaerobic hydrolysis fluidized-bed after oil removal, debris retaining; Water outlet is promoted to the post precipitation pond; Finally go into the soil filtration system,, remove pollutent in the water body through microbiological deterioration in the soil, the assimilation of bed table plant absorbing through overflow water dispensing apparatus water distribution uniformity.
Because the overall process flow of the present invention's design is reasonable, adopt the aerobic-oxygen-anaerobic of holding concurrently to handle route the high sewage of pollutant load is handled, can effectively remove the BOD in the sewage
5, COD, NH
3-N, TP.
The sewage treatment process that the present invention proposes; Adopt different pre-treatment to different quality sewage,, get into soil filtration system advanced treatment through debris retaining, hydrolysis, post precipitation; Pollutent is cleared up, is removed in the combined action of filler, mikrobe and bed table crop in soil.
The method that a kind of sewage U type overflow type soil filtration is handled the steps include:
(1) difference is come the pre-treatment of water, and septic tank effluent is through the debris retaining processing unit processes; Kitchen waste water is through de-oiling, debris retaining cell processing.
(2) anaerobic hydrolysis-acidification, sewage be acidication 6 ~ 8h under anaerobic, and macromolecule contaminant is hydrolyzed into small molecules.
(3) overflow water distribution utilizes composite water-proof material construction U type cloth tank, in establish the perforation water distributor, current through top overflow to around filler diffusion.
(4) nutrient; In water inlet place threeway is set and connects the nutrient person in charge of lower floor; The nutrient pipe is responsible for and is positioned at the following 15cm of water distributor; The radical of the additional arm of carbon source should be confirmed according to the area of soil filtration bed of packings, in order to control appropriate C/N ratio, guarantees the denitrification effect of soil filtration system.
(5) water level management, the water outlet water level is regulated through the regulation of level elbow, controls rational hydraulic detention time, and water outlet up to standard enters receiving water body or agricultural irrigation reuse.
Advantage of the present invention
1, resident living sewage is carried out pre-treatment, comprise oil removal, debris retaining, hydrolysis, deposition, effectively remove the suspended solids in the water body.Compared to other pre-treatment measure, the most of inorganic suspended substance of acidication sedimentation, the physics that reduces the soil filtration system stops up; Remove larger molecular organics simultaneously, reduce the organic loading of soil filtration system.
2, U type overflow water distribution french drain groove makes up through the composite water-proof geomembrane; Built-in U-PVC perforation water distributor, every circle is opened four diameter 2cm holes, every round spacing 15cm; Be 4～6cm rubble parcel all around; This water distribution mode can guarantee higher water distribution potential difference, makes full use of edaphic capillary action, makes the more general vertical water distribution manner of water distribution more even.
3, the nutrient person in charge at the following 15cm of a pipe coupling water distributor place is set in water inlet place; And opening/shutting valve is set, and the monitoring effluent quality, the C/N of control water inlet is than being 5:1 ~ 8:1; But when the removal efficient of N is on the low side; In time open the nutrient valve, utilize raw waste water to replenish the carbon source of lower soil layer, guarantee the removal of N.
4, as the main body of pollutant removal, we carry out the improvement of rational physico-chemical property to pedosphere, and according to the requirement of treatment process, are divided into aerobic soil layer from top to bottom, and the major control porosity is guaranteed good capillary action; Double oxygen soil layer, should there be favorable shock resistance and rational infiltration rate in the district of batching as sewage; The anaerobism soil layer as the reaction zone of denitrification, is controlled rational C/N hydraulic detention time when.
5, water level management, through rotatable elbow is set in wet well, the water degree of depth in the system also can be taked the emptying measure, gets rid of the bed body blockage problem that causes because of microbial activities generation gas in the soil.
6, mainly from the automatic control of liquid lifting system in the anaerobic hydrolysis fluidized-bed, its Operation Administration and Maintenance is simple for total system power.
Description of drawings
Fig. 1 is a kind of sewage U type overflow type soil filtration treatment unit structural representation
Fig. 2 is a kind of U type overflow type soil filtration bed of packings synoptic diagram
Fig. 3 is a kind of U type overflow type soil filtration bed of packings 1-1 sectional view
Fig. 4 is a kind of U type overflow type soil filtration bed of packings 2-2 sectional view
Fig. 5 is a kind of U type overflow type soil filtration bed of packings 3-3 sectional view
Wherein: I-preprocessing subsystem; II-soil filtration processing subsystem
1-block dirty device, 1-1 septic tank, 1-2 oil trap, 1-3 grille well; 2-anaerobic hydrolysis fluidized-bed; 3-settling tank, 3-1 water-in, 3-2 perforated wall, 3-3 sludge bucket; 4-inlet well; 5-soil filtration bed of packings, the 5-1 plant, the 5-2 kind is planted soil layer, the 5-3 layer of improving the soil, 5-4 sand filter blanket, 5-5 impervious barrier, 5-6 U type cloth tank; 6-wet well.
A-water distribution is responsible for; B-perforation water distribution branch pipe; C-carbon source replenishment control valve; D-carbon source is replenished and is responsible for; E-carbon source is replenished arm; F-receipts water pipe; G-water level management elbow; H-rising pipe.
Embodiment
Embodiment1:
A kind of sewage U type overflow type soil filtration treatment unit; This device comprises sewage preprocessing subsystem I and soil filtration processing subsystem II, and the water outlet of sewage preprocessing subsystem I is responsible for the water-in that A inserts soil filtration processing subsystem II through water distribution between system.Said pretreatment system for sewage I comprises that into water blocks dirty device 1, anaerobic hydrolysis fluidized-bed 2, settling tank 3, and sewer line blocks dirty device 1, anaerobic hydrolysis fluidized-bed 2, settling tank 3 with water inlet successively and is connected.Described soil filtration processing subsystem II comprises inlet well 4, soil filtration bed of packings 5, wet well 6.Described soil filtration bed of packings 5 has from top to down: plant 5-1, backfill plantation soil layer 5-2, overflow water dispensing apparatus 5-6, layer 5-3 that improve the soil, sand filter blanket 5-4, impervious barrier 5-5.The overflow water dispensing apparatus comprises U type cloth tank, composite water-proof geomembrane, U-PVC perforation water distributor, gravel.
Described pretreatment system for sewage I comprises that into water blocks dirty device 1, anaerobic hydrolysis fluidized-bed 2, settling tank 3; Described water inlet is blocked dirty device 1 and is blocked dirty module by three and constitute; Be septic tank 1-1, oil trap 1-2, grille well 1-3 formation; Septic tank 1-1 front end is connected with sanitary sewers, and septic tank 1-1 rear end connects grille well; Termination kitchen waste water pipe before the oil trap 1-2, oil trap 1-2 rear end connects through grille well 1-3, and grille well 1-3 front end is connected with oil trap 1-2 with septic tank 1-1, and grille well 1-3 rear end is connected with anaerobic hydrolysis fluidized-bed 2.Sewage flows among the septic tank 1-1 through waste pipe; Septic tank effluent flows in the grille well (1-3) through sewer line; Kitchen waste water flows among the oil trap 1-2 through waste pipe; Go among the grille well 1-3 through effluent stream after the oil trap 1-2 oil removing, septic tank 1-2 water outlet and oil trap 1-2 water outlet are filtered the back through grille well 1-3 and are flowed in the anaerobic hydrolysis fluidized-bed 2 through waste pipe; Described anaerobic hydrolysis fluidized-bed 2 is provided with six anaerobic hydrolysis modules, and the first anaerobic hydrolysis module front end links to each other with the grille well rising pipe through waste pipe, and the rear end links to each other with the second anaerobic hydrolysis module; Remaining anaerobic hydrolysis module order of connection is followed successively by: the second anaerobic hydrolysis module rear end is connected with the 3rd anaerobic hydrolysis module; The 3rd anaerobic hydrolysis module is connected with the 4th anaerobic hydrolysis module; The 4th anaerobic hydrolysis module is connected with the 5th anaerobic hydrolysis module; The 5th anaerobic hydrolysis module is connected with the 6th anaerobic hydrolysis module; Be provided with lift pump in the 6th anaerobic hydrolysis module, sewage be promoted in the settling tank through waste pipe.Each anaerobic hydrolysis module is being filled the carrier that particle diameter is little, specific surface area is big, and carrier is in fluidized state, and whole reactor keeps anaerobism.Said settling tank 3 is made up of water-in 3-1, perforated wall 3-2 and three parts of sludge bucket 3-3.Sewage is by first lattice of water-in 3-1 entering settling tank 3, and the mud that the pollutent after hydrolysis forms sinks among the sludge bucket 3-3, and the water distributing pore on the sewage perforated wall 3-2 flows in second lattice, and the water outlet by top flows out again.
Said soil filtration processing subsystem II comprises inlet well 4, soil filtration bed of packings 5, wet well 6.Said overflow water dispensing apparatus is made up of U type cloth tank 5-6, composite water-proof geomembrane, U-PVC perforation water distributor B, gravel; U type overflow water distribution french drain groove is positioned at the following 30cm degree of depth in surface of soil filtration bed; Building mode is: in the improvement soil layer, dig out the water distribution french drain, lay the composite water-proof geomembrane above, place U-PVC perforation water distributor B on the geomembrane; Fill gravel all around; Sewage oozes out the water distributor from perforation, through the capillary siphoning of gravel, slowly rise and to around the packing layer diffusion.Said soil filtration bed of packings 5 is followed successively by from top to down: plant 5-1; Backfill plantation soil layer 5-2, overflow water dispensing apparatus 5-6, layer 5-3 that improve the soil, sand filter blanket 5-4, impervious barrier 5-5, said plant is generally cash crop, like cotton; Vegetables etc. should not be planted large-scale tree and paddy rice.Described overflow water dispensing apparatus 5-6 comprises U type cloth tank, composite water-proof geomembrane, U-PVC perforation water distributor, gravel.Overflow water dispensing apparatus 5-6 is positioned at the following 30cm degree of depth in surface of soil filtration bed, and building mode is: in the improvement soil layer, dig out the water distribution french drain, lay the composite water-proof geomembrane above, place U-PVC perforation water distributor on the geomembrane, fill gravel all around.Sewage oozes out from water distributing pore through the capillary siphoning of gravel, slowly rise and to around the filler diffusion.Said impervious barrier 5-5 adopts the thick C25 plain concrete of 10cm, lays the blotter of 15cm below, and soil filtration bed of packings pond pool wall is a brick masonry structure, and bilayer is wiped one's face, and prevents like this to ooze under the sewage to cause phreatic pollution.Comprise water level management elbow G and rising pipe H in the said wet well 6, water level management elbow G links to each other with receipts water pipe F.Rising pipe H is positioned at the wet well bottom, feeds in the outside water body.Dissolved oxygen source is a photosynthesis of plants and oxygen and the water surface regeneration function of carrying under one's arms in the release of oxygen, the water inlet obtained oxygen through root system in the system.The capillary action of the oxygen therapy effect of root system of plant and the improvement soil layer system that makes forms aerobic zone, aerobic area and anaerobic zone.
A kind of its tubing system of sewage U type overflow type soil filtration treatment unit comprises that water distribution person in charge A, U-PVC perforation water distribution branch pipe B, carbon source replenishment control valve C, carbon source are replenished person in charge D, carbon source is replenished arm E, receipts water pipe F, water level management elbow G, rising pipe H.The function of each pipeline with annexation is: water distribution is responsible for A and is linked to each other with U-PVC perforation water distribution branch pipe B; Water distribution is responsible for A with in sewage transport to the soil filtration bed of packings 5; U-PVC perforation water distributor B is in U type cloth tank 5-6; Sewage overflow goes out U type groove 5-6 and is evenly arranged in the soil filler, can deepen the filter depth of soil filler like this, increases the clearance of pollutent in the sewage.In water inlet place threeway is set and connects the carbon source supply person in charge D of lower floor; Carbon source replenishment control valve C replenishes pipe in carbon source and is responsible on the D; Carbon source is replenished person in charge D and is linked to each other through threeway and the additional arm E of carbon source; Carbon source is replenished on the arm E and is distributed with posticum, and the nutritive medium that contains carbon source can replenish pipe through carbon source and get in the soil filtration layer, in order to regulate the C/N ratio in the sewage.Receipts water pipe F is arranged in the bottom of soil packing layer, feeds wet well 6, and water level management elbow G is arranged in wet well 6, and F links to each other with the receipts water pipe.
Sewage is responsible for the water-in that A flows into soil filtration processing subsystem II through the water outlet of preprocessing subsystem I through water distribution between system; U type overflow water distribution french drain groove makes up through the composite water-proof geomembrane; Built-in U-PVC perforation water distributor B, every circle is opened four diameter 2cm holes, every round spacing 15cm; Be 4～6cm rubble parcel all around, this water distribution mode can guarantee higher water distribution potential difference.Lay the packing layer after artificial reconstructed all around, sewage is through the capillary siphoning of gravel, slowly rise and to around soak into, diffuse into surrounding soil, the unsaturation infiltration takes place in soil layer; Gruel is collecting a large amount of mikrobes in the soil layer, and under action of microorganisms, organism is adsorbed, degrades in the sewage, reaches to purify and the de-odorised purpose; Protozoon and metazoans a large amount of in the soil are again foodstuff with the mikrobe; Stretching into root system of plant in the soil layer then absorbs owing to inorganic nutrients such as N that the sewage mineralising produces, P, as the required nutrition of its growth.D is responsible in the nutritious carbon sourc supply that the 15cm place is provided with under water inlet place water distributor A, and carbon source replenishment control valve C is set, and control appropriate C/N ratio utilizes raw waste water to replenish the carbon source of lower soil layer, guarantees the removal of N.Through rotatable elbow G is set in wet well 6, the water degree of depth in the system, the water outlet after the purification is collected through receiving water pipe F, discharge through rising pipe H, in can be used as the water reuse or enter near III class function water body.
The method that a kind of sewage U type overflow type soil filtration is handled the steps include:
(1) difference is come the waste-blocking position reason of water, and septic tank effluent is directly handled through grid 1; The kitchen reclaimed water is handled through oil trap 1-2, grid 1-3, effectively removes the suspended solids in the water body.Debris retaining 1 facility comprises oil trap 1-2, grid 1-3, and the grid slag is not because of containing heavy metal etc., and interceptor can go back to the field or be transported to the refuse tip and focus on behind compost fermentation.
(2) acidication, deposition, reclaimed water get into anaerobic hydrolysis fluidized-bed 2 after debris retaining 1, reclaimed water is acidication 6 ~ 8h under anaerobic, the most of inorganic suspended substance of acidication sedimentation, and the physics that reduces the soil filtration system stops up; Remove larger molecular organics simultaneously, reduce the organic loading of soil filtration system.To post precipitation pond 3, mud can be in order to compost through lift pump in water outlet.
(3) overflow water distribution utilizes composite water-proof material construction U type cloth tank 5-6, in establish perforation water distributor B, current through top overflow to around the filler diffusion.Lay the packing layer after artificial reconstructed all around, reclaimed water is through the capillary siphoning of gravel, slowly rise and to around soak into, diffuse into surrounding soil, the unsaturation infiltration takes place in soil layer, make the more general vertical water distribution manner of water distribution more even.
(4) nutrient, D is responsible in the carbon source supply that 15cm place under the pipe coupling water distribution person in charge is set in water inlet place, and carbon source is replenished the radical of arm E and should be confirmed according to the area of soil filtration bed of packings 5.Gruel is collecting a large amount of mikrobes in the soil layer, and under action of microorganisms, organism is adsorbed, degrades in the sewage, reaches to purify and the de-odorised purpose; Protozoon and metazoans a large amount of in the soil are again foodstuff with the mikrobe; Stretching into root system of plant in the soil layer then absorbs owing to inorganic nutrients such as N that the sewage mineralising produces, P, as the required nutrition of its growth.Control appropriate C/N ratio, guarantee the denitrification effect of soil filtration system.
(5) water level management, through rotatable elbow G is set in wet well 6, the water degree of depth in the system is controlled rational hydraulic detention time, and water outlet up to standard enters receiving water body or agricultural irrigation reuse.Water outlet after above-mentioned purification is collected through receiving water pipe F, discharges through wet well 6.
Claims (5)
1. sewage U type overflow type soil filtration treatment unit; It is characterized in that: it comprises sewage preprocessing subsystem (I) and soil filtration processing subsystem (II); It is characterized in that: the water outlet of sewage preprocessing subsystem (I) is responsible for the water-in that (A) inserts soil filtration processing subsystem (II) through water distribution between system; Pretreatment system for sewage (I) comprises that into water blocks dirty device (1), anaerobic hydrolysis fluidized-bed (2), settling tank (3); Sewer line blocks dirty device (1), anaerobic hydrolysis fluidized-bed (2), settling tank (3) with water inlet successively and is connected; Water inlet is blocked dirty device (1) and is blocked dirty module by three and constitute, and septic tank (1-1) front end is connected with sanitary sewers, septic tank (1-1) rear end connection grille well (1-3); The preceding termination kitchen waste water of oil trap (1-2) pipe; Oil trap (1-2) rear end connects through grille well (1-3); Grille well (1-3) front end is connected with oil trap (1-2) with septic tank (1-1); Grille well (1-3) rear end is connected with anaerobic hydrolysis fluidized-bed (2); Soil filtration processing subsystem (II) comprises inlet well (4), soil filtration bed of packings (5), wet well (6), and described soil filtration bed of packings (5) has from top to down: plant (5-1), backfill plantation soil layer (5-2), overflow water dispensing apparatus (5-6), improve the soil layer (5-3), sand filter blanket (5-4), impervious barrier (5-5); Described overflow water dispensing apparatus (5-6) comprises U type cloth tank, composite water-proof geomembrane, U-PVC perforation water distributor, gravel; Overflow water dispensing apparatus (5-6) is positioned under the surface of soil filtration bed of packings; Building mode is: in the layer of improving the soil, dig out the water distribution french drain, lay the composite water-proof geomembrane above, place U-PVC perforation water distributor on the geomembrane; Fill gravel all around, described wet well (6) comprising: water level management elbow (G), rising pipe (H).
2. a kind of sewage U type overflow type soil filtration treatment unit according to claim 1; It is characterized in that: tubing system comprises that the water distribution person in charge (A), perforation water distribution branch pipe (B), carbon source replenishment control valve (C), carbon source are replenished the person in charge (D), carbon source is replenished arm (E), receipts water pipe (F), water level management elbow (G), rising pipe (H) in the described soil filtration bed of packings (5); Water distribution is responsible for (A) and is linked to each other with perforation water distribution branch pipe (B); Water distribution is responsible for (A) with in sewage transport to the soil filtration bed of packings (5); Perforation water distributor (B) is in U type cloth tank, and sewage overflow goes out U type cloth tank and is arranged in the soil filler, in water inlet place a pipe coupling lower floor carbon source supply is set and is responsible for (D); Carbon source replenishment control valve (C) replenishes pipe in carbon source and is responsible on (D); Carbon source is replenished the person in charge (D) and is linked to each other through threeway and the additional arm (E) of carbon source, and carbon source is replenished on the arm (E) and is distributed with posticum, receives the bottom that water pipes (F) are arranged in the soil packing layer; Water level management elbow (G) is arranged in wet well (6); Link to each other with receipts water pipes (F), rising pipe (H) termination is gone in the wet well (6), and the other end feeds outside water body.
3. a kind of sewage U type overflow type soil filtration treatment unit according to claim 1, it is characterized in that: described anaerobic hydrolysis fluidized-bed (2) is provided with six anaerobic hydrolysis modules; The first anaerobic hydrolysis module front end links to each other with the grille well rising pipe through waste pipe, and the rear end links to each other with the second anaerobic hydrolysis module; Remaining anaerobic hydrolysis module order of connection is followed successively by: the second anaerobic hydrolysis module rear end is connected with the 3rd anaerobic hydrolysis module; The 3rd anaerobic hydrolysis module is connected with the 4th anaerobic hydrolysis module; The 4th anaerobic hydrolysis module is connected with the 5th anaerobic hydrolysis module; The 5th anaerobic hydrolysis module is connected with the 6th anaerobic hydrolysis module; Be provided with lift pump in the 6th anaerobic hydrolysis module, sewage be promoted in the settling tank (3) through waste pipe.
4. a kind of sewage U type overflow type soil filtration treatment unit according to claim 1, it is characterized in that: described plant (5-1) is generally cotton, and vegetables should not be planted large-scale tree and paddy rice.
5. a kind of sewage U type overflow type soil filtration treatment unit according to claim 1; It is characterized in that: described impervious barrier (5-5) adopts the thick C25 plain concrete of 10cm; Lay the blotter of 15cm below, soil filtration bed of packings wall is a brick masonry structure, and bilayer is wiped one's face.
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| CN102020399B true CN102020399B (en) | 2012-10-17 |
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| CN104193078B (en) * | 2014-07-25 | 2016-01-20 | 中国环境科学研究院 | A kind of A/O soil oozes device and the treatment process of system process phosphor-containing organic wastewater |
| CN104944706A (en) * | 2015-06-24 | 2015-09-30 | 安徽显闰环境工程有限公司 | Sewage treatment device |
| CN106517526B (en) * | 2016-11-28 | 2019-07-16 | 中国环境科学研究院 | Flower bed type sewage-treatment plant and processing method |
| CN107265781A (en) * | 2017-08-07 | 2017-10-20 | 湖南艾布鲁环保科技有限公司 | A kind of collection of agricultural non-point source pollution agricultural drain and secondary treatment system |
| CN111499096B (en) * | 2020-04-15 | 2022-04-12 | 宁波财经学院 | Black and odorous river water body treatment system |
| CN114956471A (en) * | 2022-06-16 | 2022-08-30 | 湖北兴新生态科技有限公司 | Artificial soil domestic sewage treatment system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201151691Y (en) * | 2007-11-29 | 2008-11-19 | 上海昌保环境科技有限公司 | Buried sewage percolation device |
| CN201873597U (en) * | 2010-12-15 | 2011-06-22 | 武汉昌宝环保工程有限公司 | U-type overflowing domestic sewage soil-filtration processing unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201151691Y (en) * | 2007-11-29 | 2008-11-19 | 上海昌保环境科技有限公司 | Buried sewage percolation device |
| CN201873597U (en) * | 2010-12-15 | 2011-06-22 | 武汉昌宝环保工程有限公司 | U-type overflowing domestic sewage soil-filtration processing unit |
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