CN104150706B - Slowly system unpowered biological rotating disk water purifying device and method is oozed - Google Patents

Slowly system unpowered biological rotating disk water purifying device and method is oozed Download PDF

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CN104150706B
CN104150706B CN201410360148.6A CN201410360148A CN104150706B CN 104150706 B CN104150706 B CN 104150706B CN 201410360148 A CN201410360148 A CN 201410360148A CN 104150706 B CN104150706 B CN 104150706B
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water
blodisc
sewage
soil
slow speed
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CN201410360148.6A
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CN104150706A (en
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席北斗
王雷
李英军
王金生
余红
葛彪
杨津津
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席北斗
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Abstract

One oozes system unpowered biological rotating disk water purifying device slowly, primarily of cylinder grid maker, unpowered biological treatment unit and at a slow speed soil ooze system composition.The invention also discloses the method utilizing said apparatus to carry out sewage purification.The present invention can purify waste water cost-effectively, make full use of the nutritive substance in sewage and water, the production of strengthening farm crop, herbage and forest, promote the development of aquatic products and livestock products, dispose of sewage with high water-base fluid on area little as far as possible, be that conventional single soil at a slow speed oozes system 15 times for the wastewater treatment efficiency that hydraulic load is higher simultaneously.

Description

Slowly system unpowered biological rotating disk water purifying device and method is oozed
Technical field
The present invention relates to a kind of transform gravitational energy power to promote the device of blodisc rotation treatment sewage, relate more specifically to a kind of device oozing system unpowered biological rotating disk slowly and purify waste water.
The invention still further relates to the method utilizing said apparatus to carry out sewage purification.
Background technology
Blodisc is the modern technique of existing biological sewage treatment, rotating disk half is placed in treatment sewage, half exposes in atmosphere, machine shaft is used to drive rotating disk constantly to rotate, rotating disk in water and the rotating disk in air constantly exchange processing environment, treatment effect is good, effluent quality is high, but due to the continuous rotary turnplate of needs driven by motor, consume a large amount of electric energy, it is main treatment technology that the present invention chooses blodisc, adopt unpowered Design Mode, only construction cost need be dropped into, without the need to working cost, disposable building up gets final product sewage by oneself.The change of this technique to influent quality, the water yield has stronger adaptability, stops for some time water inlet, also can not bring obvious obstacle to biomembranous purification function even if middle.What use that this technique can be efficient, economical disposes of sewage, and purification rate is high, and conformability is strong; And structure is simple, operational security, completely without the need to consuming the energy.Be applicable in process, low-concentration organic wastewater, water outlet can directly as Treated sewage reusing, meet the theory of China's powerful " save energy, resource circulation utilization " of advocating.
Summary of the invention
One is the object of the present invention is to provide to ooze system unpowered biological rotating disk water purifying device slowly.
Another object of the present invention is to provide a kind of method utilizing said apparatus to carry out sewage purification.
For achieving the above object, provided by the inventionly ooze system unpowered biological rotating disk water purifying device slowly, primarily of cylinder grid maker, unpowered biological treatment unit and at a slow speed soil ooze system composition; Wherein:
One cylinder grid maker, for the solid dammed in food waste percolate;
Unpowered biological treatment unit is inputted after the sewage of cylinder grid maker process enters high-order water inlet pipe;
Top in unpowered biological treatment unit is blodisc, is filled with polyethylene ball in blodisc, and polyethylene ball inside is hollow form, and inside is filled with light granules type molecular sieve filling, and spherome surface is covered with square opening; The polyethylene ball of filling is 3/4 of blodisc internal space; Blodisc is divided into the firstth district and the secondth district by dividing plate; Bottom in unpowered biological treatment unit is the biological filter being filled with flow model molecular sieve filling, and the periphery of blodisc is provided with waterwheel, and blodisc is immersed in biological filter; The waterwheel of the blodisc in corresponding firstth district of water outlet of high-order water inlet pipe, drive the blodisc in the firstth district to rotate, the blodisc in the firstth district and the blodisc in the secondth district, by geartransmission, rotate under indirect power; Supernatant liquor in biological filter imports soil at a slow speed by water distributor and oozes in system;
Soil system of oozing is followed successively by surperficial sandy soils, metalling, filtering layer and water guide layer from top to bottom at a slow speed, wherein surperficial sandy soils is sand mixture, for serike, filtering layer is non-woven fabrics, upper strata in filtering layer and water guide layer is equipped with the mixed fillers of gravel and Wingdale, and lower floor is equipped with gravel and zeolite mixed fillers; Sewage after soil oozes system process at a slow speed imports in outlet sump.
Describedly ooze system unpowered biological rotating disk water purifying device slowly, wherein, be provided with the roller screen that after being rolled into two cylinders by iron plate, sandwich one section of sieve plate forms in cylinder grid maker, the below of roller screen is tank; The shell of cylinder grid maker is semi-enclosed shell, and integral erection is on support, and needle-like swabbing pig Gu Dings the side that Roll sieves, and is positioned at the upper end of semi-enclosed shell.
Describedly ooze system unpowered biological rotating disk water purifying device slowly, wherein, the roller screen rotating speed of cylinder grid maker is 10 ~ 90 turns/min.
Describedly ooze system unpowered biological rotating disk water purifying device slowly, wherein, under the effect at hydro-pump of the sewage of cylinder grid process, enter high-order water inlet pipe.
Describedly ooze system unpowered biological rotating disk water purifying device slowly, wherein, the 20-60% of blodisc area is immersed in biological filter.
Describedly ooze system unpowered biological rotating disk water purifying device slowly, wherein, soil oozes the sand mixture that the surperficial sandy soils of system is 0.2m at a slow speed, and sand and the diatomaceous volume mixture ratio of Fu Luoli are 2:1-3:1; Rubble thickness 0.3m, for the rubble of particle diameter 1.2mm-1.5mm, filtering layer is the non-woven fabrics of thickness 30mm, filtering layer and water guide thickness 50mm, gravel, Wingdale mixed fillers are laid in upper strata, and for the solidification of phosphorus, gravel, zeolite mixed fillers are laid by lower floor, for the purification once again of sewage, its packing material size is respectively 8mm-15mm and 15mm-30mm; Soil oozes the bottom of system is at a slow speed the gradient of i=0.1-0.5.
Provided by the invention utilization above-mentionedly oozes the method that system unpowered biological rotating disk water purifying device carries out sewage purification slowly:
Sewage flows through from the hole of cylinder grid and enters in tank, solid dams in the screen surface of cylinder cylinder grid, in the action of gravity of drum-inclined, under the impellent of the centrifugal concussion effect that cylinder rotates and reciprocating cleaning push pedal, drop in the below of cylinder grid maker, first input in unpowered biological treatment unit after the sewage of cylinder grid process enters high-order water inlet pipe and aerobic biodegradation is carried out to dirty Organic substance in water, then the flow model molecular sieve filling in biological filter, bottom is flowed through, pollution substance in further process water, the blodisc finally entering the secondth district carries out Aerobic biological process further, itrogenous organic substance is made in sewage to be first ammonia nitrogen by heterotroph microbial transformation, then under aerobic (Aerobic) condition, the effect of and nitrococcus nitrated by aerobic autotrophic type, be nitrite nitrogen or nitrate nitrogen by the ammonium oxidation in waste water, last under anoxic (Anoxic) condition, denitrifying bacterium (denitrifier) is utilized to be that nitrogen is overflowed from waste water by nitrite and nitrate transformation, thus reach the object of denitrogenation,
Blodisc is immersed in the waste water in unpowered biological treatment unit, and blodisc immerses a part for waste water, and the organism in its surface biological film absorption waste water, makes microorganism obtain nutrition; When producing the water surface, the moisture film of microbial film and drive thereof directly absorbs oxygen again from air; Circulation like this repeatedly, organism in waste water obtains oxygenolysis under aerobic effect, microbial film on blodisc Middle molecule sieve also because of aging constantly self falling, can precipitate in biological filter, and supernatant liquor imports soil at a slow speed by water distributor and oozes system;
Soil oozes the surperficial sandy soils of system for serike system at a slow speed, and the porosity that its Large stone is formed facilitates the flowing of sewage; By filtering layer, filtering layer and water guide layer, sewage is purified once again;
Native surperficial sandy soils kind of oozing system is implanted with the plant of heavy root system at a slow speed, strengthens the combined effect of root system of plant and microorganism, increases porosity of soil popular to improve sewage, promotes plant and oozes absorption and sorption effect in system at soil; Utilize the red mud molecular sieve of meta-alkalescence as filler, the small molecules acid produced with anaerobic part acidifying in rapid adsorption, regulates sewage potential of hydrogen, makes device environment plant preferably, microbe survival simultaneously; Construction slight alkali environment fixes the heavy metal in sewage simultaneously, prevents it from leaching, and utilizes small organic molecule to supply plant nutrient, and heavy metal biological stabilization is carried out in absorption in growing process, absorption heavy metal.
Water up to standard after soil oozes system process at a slow speed imports in outlet sump.
Described method, wherein, the solid particulate that cylinder grid maker is separated, the mud of unpowered biological treatment unit discharge are mixed into windrow fertilizer and produce organic fertilizer, reach the effect of resource reclaim.
Described method, wherein, soil oozes the part effluent recycling of system to the water inlet of unpowered biological treatment unit at a slow speed, and regulating water quality also stimulates microorganism growth process to secrete secondary substance.
The invention provides a kind of biological treatment environment of uniqueness, first itrogenous organic substance in sewage is ammonia nitrogen by heterotroph microbial transformation, then under aerobic (Aerobic) condition, the effect of and nitrococcus nitrated by aerobic autotrophic type, be nitrite nitrogen or nitrate nitrogen by the ammonium oxidation in waste water, last under anoxic (Anoxic) condition, utilize denitrifying bacterium (denitrifier) to be that nitrogen is overflowed from waste water by nitrite and nitrate transformation, reach the object of denitrogenation preferably.Sewage after the process of unpowered biological treatment unit, its nutrient concentrations is cut down in a large number, reduce the bio-toxicity of sewage, then adopt sewage Slow Rate Land Treatment System, with the advanced treatment of sewage and be utilized as major objective, allow sewage slowly by soil, make sewage purification, regeneration because naturally osmotic filters, by soil-plant system, carry out series of physical, chemistry, biological action.During blodisc work, contact above rotating disk with air, in its interior molecules sieve, ammonium oxidation is the stripping of nitre nitrogen, rotates into sewage inside, again adsorbs ammonia nitrogen, and in denitrification process, consume organism in sewage, go round and begin again and dispose of sewage.The land treatment systems of sewage, namely purified sewage cost-effectively, taken full advantage of again the nutritive substance in sewage and water, the production of strengthening farm crop, herbage and forest, promote the development of aquatic products and livestock products, dispose of sewage with high water-base fluid on area little as far as possible simultaneously.
Accompanying drawing explanation
Fig. 1 is device schematic diagram of the present invention.
Primary clustering nomenclature in accompanying drawing:
1 cylinder grid maker; 2 reciprocating cleaning push pedals; 3 needle-like swabbing pigs; 4 high-order water inlet pipes; 5 waterwheels; 6 polyethylene balls; 7 steel axles; 8 blodiscs; 9 bodies of wall; 10 unpowered biological treatment unit; 11 water distributors; 12 botanical systems; 13 at a slow speed soil ooze system; 14 surperficial sandy soils; 15 non-woven fabrics; 16 sand stone layer; 17 filtering layers and water guide layer; 18 outlet sumies; 19 biological filters; 20 hydro-pumps; 21 semi-enclosed shells; 22 supports; The blodisc in A first district; The blodisc in B second district.
Embodiment
Refer to Fig. 1.System unpowered biological rotating disk water purifying device and method are oozed in the present invention slowly can remove pollution substance in sewage, completes the process of resource recovery preferably.
Of the present inventionly ooze system unpowered biological rotating disk water purifying device slowly, primary structure is:
One cylinder grid maker 1, cylinder, semi-enclosed shell 21, support 22 and tank that after being rolled into two cylinders by iron plate, sandwich one section of web plate forms form, and needle-like swabbing pig 3 is fixed on the side that Yuan Tong Roll sieves, in semi-enclosed shell 21 upper end.Sewage flows through from the hole of cylinder grid, directly falls in tank; Solid dams on trommel screen net surface, under the impellent of the action of gravity of drum-inclined, centrifugal concussion effect that cylinder rotates and reciprocating cleaning push pedal 2, drops in the below (i.e. the left side of drawing) of cylinder grid maker 1.In the process that cylinder rotates (rotating speed is 10 ~ 90 turns/min), needle-like swabbing pig 3 constantly rotates thereupon, prevent the sieve aperture on cylinder grid maker 1 from being blocked by solid, the solid of blocking sieve aperture falls into drums inside under the effect of swabbing pig, under the centrifugal concussion effect that cylinder rotates, drop in the left side of grid maker.Unpowered biological treatment unit 10 is inputted after the sewage of grid process enters high-order water inlet pipe 4 under the effect of hydro-pump 20.The solid particulate that cylinder grid maker is separated, the mud of unpowered biological treatment unit discharge are mixed into windrow fertilizer, produce organic fertilizer, reach the effect of resource reclaim.
Top in unpowered biological treatment unit 10 is that the blodisc 8 of the blodisc 8 and the second district B being divided into the blodisc of the first district A and blodisc 8, the first district A of the second district B by body of wall 9 passes through geartransmission, rotates under indirect power.The bottom of blodisc 8 is the biological filter 19 being filled with flow model molecular sieve filling, and the periphery of blodisc 8 is provided with waterwheel 5.The waterwheel 5 of corresponding first blodisc 8 of water outlet of high-order water inlet pipe 4, when this waterwheel 5 of water impact of high-order water inlet pipe 4, streaming potential is converted into kinetic energy, thus drive the blodisc of the first district A to rotate, aerobic biodegradation is carried out to dirty Organic substance in water, then flow through the flow model molecular sieve filling in biological filter, bottom 19, the pollution substance further in process water, the blodisc finally entering the second district B carries out Aerobic biological process further.First itrogenous organic substance in sewage in sewage is ammonia nitrogen by heterotroph microbial transformation, then under aerobic (Aerobic) condition, the effect of and nitrococcus nitrated by aerobic autotrophic type, be nitrite nitrogen or nitrate nitrogen by the ammonium oxidation in waste water, last under anoxic (Anoxic) condition, utilize denitrifying bacterium (denitrifier) to be that nitrogen is overflowed from waste water by nitrite and nitrate transformation, thus reach the object of denitrogenation.In unpowered biological treatment unit of the present invention, can purify waste water cost-effectively, make full use of the nutritive substance in sewage and water, the production of strengthening farm crop, herbage and forest, promote the development of aquatic products and livestock products, dispose of sewage with high water-base fluid on area little as far as possible simultaneously.
Blodisc 8 part adopts and is made up of the some pie hollow iron cages be fixed on a transverse axis.Pie hollow iron cage welds six iron plates as skeleton by round iron plate, and a circular web plate is welded in skeleton side, and two panels skeleton is arranged in parallel, between rely on web plate to bend to circular connection.Transverse axis and iron cage adopt hexagon to fix, to strengthen its coupling stiffness.Full polyethylene ball 6 is filled in iron cage inside, polyethylene ball 6 inside is hollow, spherome surface is covered with square opening, polyethylene ball inside is filled with light granules type molecular sieve filling, compactedness is 3/4 of polyethylene ball internal space, to ensure in blodisc rotation process, the mobility of polyethylene ball inner stuffing.In blodisc rotation process, due to the mobility of polyethylene ball internal lightweight granule type molecular sieve filling, make polyethylene ball interior molecules sieve irregular collision between filler, make its surface biological film come off under shock rubbing effect.This structure is significant in the mass transfer process of oxygen, and is conducive to microbial film internal layer microorganism and directly from liquid phase, obtains matrix.
In blodisc of the present invention and biological filter, molecular sieve filling has huge specific surface area and strong adsorptivity, the pollution substances such as the ammonia nitrogen simultaneously in absorption effluent, make ammonia nitrogen concentration in sewage can lower than 40mg/L, reduce saprobia toxicity, improve microorganism active in treating processes, improve that biological treatment is nitrated, the function of denitrogenation and dephosphorization.
In the waste water that blodisc has the area of 20-60% to be immersed in unpowered biological treatment unit 10, blodisc immerses a part for waste water, and the organism in its surface biological film absorption waste water, makes microorganism obtain nutrition.When producing the water surface, the moisture film of microbial film and drive thereof directly absorbs oxygen again from air.Repeatedly, the organism in waste water obtains oxygenolysis under aerobic effect in circulation like this.Microbial film on blodisc Middle molecule sieve also because of aging constantly self falling, can precipitate in biological filter, and supernatant liquor imports soil at a slow speed by water distributor 11 and oozes system 13.
Soil oozes system 13 and is followed successively by surperficial sandy soils 14, metalling 16, filtering layer and water guide layer 17 from top to bottom at a slow speed.Surface sandy soils 14 is the sand mixture of 0.2m, and for serike system 12, according to Fu Luoli diatomite viscosity, sand and Fu Luoli diatomite blending ratio are 2:1-3:1; Rubble thickness 0.3m is the rubble of particle diameter 1.2mm-1.5mm, and while being convenient to plant root growth, the porosity that its Large stone is formed facilitates the flowing of sewage; Filtering layer is the non-woven fabrics 15 of thickness 30mm, prevents the blocking causing filtering layer and water guide layer 17 because of the loss of Fu Luoli diatomite, sandstone in surperficial sandy soils 14.Filtering layer and the thick 50mm of water guide layer 17, be divided into two-layer, and the mixed fillers of gravel and Wingdale is laid on upper strata, and for the solidification of phosphorus, gravel and zeolite mixed fillers are laid by lower floor, and for the purification once again of sewage, its packing material size is respectively 8mm-15mm and 15mm-30mm; Soil oozes the gradient being provided with i=0.1-0.5 at the bottom of the face of system 13, to ensure that sewage self-conductance water layer flows out smoothly at a slow speed.
Native surperficial sandy soils kind of plant of oozing system 13 selects herbaceous plant to combine cultivation with xylophyta at a slow speed.Plantation xylophyta fairy bamboo can utilize its heavy root system, strengthens the combined effect of root system of plant and microorganism, increases porosity of soil popular to improve sewage, promotes plant and oozes absorption and sorption effect in system at soil; Plantation herbaceous plant cyperus alternifolius, reed and power flower again, have good treatment effect to the pollution substance in sewage, have efficient sorption to the heavy metal in sewage.
Soil oozes system 13 and is used as liquid manure resource by sewage at a slow speed, and fairy bamboo, cyperus alternifolius and reed are gathered in after utilizing sewage Middle nutrition agent growth maturation, can have economic benefit, and power flower has landscape effect again.Soil oozes bed body when system 13 is run and is in undersaturated condition always at a slow speed, ensures to run continuously dripping under filter state.Sewage after soil oozes system 13 process is at a slow speed promoted in outlet sump 18 via hydro-pump.
According to one embodiment of present invention, the present invention is that conventional single soil at a slow speed oozes system 15 times for the wastewater treatment efficiency that hydraulic load is higher.

Claims (9)

1. ooze a system unpowered biological rotating disk water purifying device slowly, primarily of cylinder grid maker, unpowered biological treatment unit and at a slow speed soil ooze system composition; Wherein:
One cylinder grid maker, for the solid dammed in food waste percolate;
Unpowered biological treatment unit is inputted after the sewage of cylinder grid maker process enters high-order water inlet pipe;
Top in unpowered biological treatment unit is blodisc, is filled with polyethylene ball in blodisc, and polyethylene ball inside is hollow form, and inside is filled with light granules type molecular sieve filling, and spherome surface is covered with square opening; The polyethylene ball of filling is 3/4 of blodisc internal space; Blodisc is divided into the firstth district and the secondth district by dividing plate; Bottom in unpowered biological treatment unit is the biological filter being filled with flow model molecular sieve filling, and the periphery of blodisc is provided with waterwheel, and blodisc is immersed in biological filter; The waterwheel of the blodisc in corresponding firstth district of water outlet of high-order water inlet pipe, drive the blodisc in the firstth district to rotate, the blodisc in the firstth district and the blodisc in the secondth district, by geartransmission, rotate under indirect power; Supernatant liquor in biological filter imports soil at a slow speed by water distributor and oozes in system;
Soil system of oozing is followed successively by surperficial sandy soils, metalling, filtering layer and water guide layer from top to bottom at a slow speed, wherein surperficial sandy soils is sand mixture, for serike, filtering layer is non-woven fabrics, upper strata in filtering layer and water guide layer is equipped with the mixed fillers of gravel and Wingdale, and lower floor is equipped with gravel and zeolite mixed fillers; Sewage after soil oozes system process at a slow speed imports in outlet sump.
2. ooze system unpowered biological rotating disk water purifying device according to claim 1 slowly, wherein, be provided with the roller screen that after being rolled into two cylinders by iron plate, sandwich one section of sieve plate forms in cylinder grid maker, the below of roller screen is tank; The shell of cylinder grid maker is semi-enclosed shell, and integral erection is on support, and needle-like swabbing pig is fixed on the side of roller screen, and is positioned at the upper end of semi-enclosed shell.
3. according to claim 1 or 2, ooze system unpowered biological rotating disk water purifying device slowly, wherein, the roller screen rotating speed of cylinder grid maker is 10 ~ 90 turns/min.
4. ooze system unpowered biological rotating disk water purifying device according to claim 1 slowly, wherein, under the effect at hydro-pump of the sewage of cylinder grid process, enter high-order water inlet pipe.
5. ooze system unpowered biological rotating disk water purifying device according to claim 1 slowly, wherein, the 20-60% of blodisc area is immersed in biological filter.
6. ooze system unpowered biological rotating disk water purifying device according to claim 1 slowly, wherein, soil oozes the sand mixture that the surperficial sandy soils of system is 0.2m at a slow speed, and sand and the diatomaceous volume mixture ratio of Fu Luoli are 2:1-3:1, and Fu Luoli diatomite is laid on top layer; Rubble thickness 0.3m, for the rubble of particle diameter 1.2mm-1.5mm, filtering layer is the non-woven fabrics of thickness 30mm, filtering layer and each thick 50mm of water guide layer, gravel, Wingdale mixed fillers are laid in upper strata, for the solidification of phosphorus, gravel, zeolite mixed fillers are laid by lower floor, for the purification once again of sewage, its filtering layer packing material size is 8mm-15mm, and water guide layer packing material size is 15mm-30mm; Soil oozes the bottom of system is at a slow speed the gradient of i=0.1-0.5.
7. utilize described in claim 1 and ooze the method that system unpowered biological rotating disk water purifying device carries out sewage purification slowly:
Sewage flows through from the hole of cylinder grid and enters in tank, solid dams in the screen surface of cylinder cylinder grid, in the action of gravity of drum-inclined, under the impellent of the centrifugal concussion effect that cylinder rotates and reciprocating cleaning push pedal, drop in the below of cylinder grid maker, first input in unpowered biological treatment unit after the sewage of cylinder grid process enters high-order water inlet pipe and aerobic biodegradation is carried out to dirty Organic substance in water, then the flow model molecular sieve filling in biological filter, bottom is flowed through, pollution substance in further process water, the blodisc finally entering the secondth district carries out Aerobic biological process further, itrogenous organic substance is made in sewage to be first ammonia nitrogen by heterotroph microbial transformation, then under aerobic condition, the effect of and nitrococcus nitrated by aerobic autotrophic type, be nitrite nitrogen or nitrate nitrogen by the ammonium oxidation in waste water, under anoxic conditions finally, utilize denitrifying bacterium by nitrite and nitrate transformation for nitrogen is overflowed from waste water, thus reach the object of denitrogenation,
Blodisc is immersed in the waste water in unpowered biological treatment unit, and blodisc immerses a part for waste water, and the organism in its surface biological film absorption waste water, makes microorganism obtain nutrition; When producing the water surface, the moisture film of microbial film and drive thereof directly absorbs oxygen again from air; Circulation like this repeatedly, organism in waste water obtains oxygenolysis under aerobic effect, microbial film on blodisc Middle molecule sieve also because of aging constantly self falling, can precipitate in biological filter, and supernatant liquor imports soil at a slow speed by water distributor and oozes system;
Soil oozes the surperficial sandy soils of system for serike system at a slow speed, and the porosity that its Large stone is formed facilitates the flowing of sewage; By filtering layer, filtering layer and water guide layer, sewage is purified once again;
Native surperficial sandy soils kind of oozing system is implanted with the plant of heavy root system at a slow speed, strengthens the combined effect of root system of plant and microorganism, increases Fu Luoli diatomite porosity popular to improve sewage, promotes plant and oozes absorption and sorption effect in system at soil;
Water up to standard after soil oozes system process at a slow speed imports in outlet sump.
8. method according to claim 7, wherein, the solid particulate that cylinder grid maker is separated, the mud of unpowered biological treatment unit discharge are mixed into windrow fertilizer and produce organic fertilizer, reach the effect of resource reclaim.
9. method according to claim 7, wherein, soil oozes the part effluent recycling of system to the water inlet of unpowered biological treatment unit at a slow speed, and regulating water quality also stimulates microorganism growth process to secrete secondary substance.
CN201410360148.6A 2014-07-25 2014-07-25 Slowly system unpowered biological rotating disk water purifying device and method is oozed CN104150706B (en)

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CN203653330U (en) * 2014-01-21 2014-06-18 东北石油大学 Integrated denitrifying and aerating biological filter

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