CN100586880C - High concentration organic wastewater processing system - Google Patents
High concentration organic wastewater processing system Download PDFInfo
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- CN100586880C CN100586880C CN200610128370A CN200610128370A CN100586880C CN 100586880 C CN100586880 C CN 100586880C CN 200610128370 A CN200610128370 A CN 200610128370A CN 200610128370 A CN200610128370 A CN 200610128370A CN 100586880 C CN100586880 C CN 100586880C
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Abstract
Provided is a treatment system for high concentrated organic wastewater, which comprises a flocculent sedimentation tank, a filter tank and a soil filtration device, wherein the soil filtration devicecomprises a casing made of anti-seep materials. The bottom portion inside the casing is a rinsing area, the end portion of the rinsing area is provided with a water outlet, and a bearing permeable stratum, a gravel stratum and a soil preparation stratum are sequentially arranged above the rinsing area. A separation layer is arranged between the gravel stratum and the soil preparation stratum, themiddle upper portion of the soil preparation stratum is provided with a purifier in which a water giving-off pipe is disposed, and the filter tank is communicated with the water giving-off pipe via awater inflow device. The treatment system is capable of effectively removing the content of COD, BOD, SS and ammonia nitrogen in the water, is simple and convenient in operation and management, hardin being blocking up and small in accommodation area, and is adaptable to treatment systems for high concentrated organic wastewater of small and medium-sized food manufacturing enterprises.
Description
Technical field
The invention belongs to Sewage treatment systems, relate in particular to a kind of treatment system of high concentrated organic wastewater.
Background technology
China is a country that drought and water shortage is serious, simultaneously also be that a water pollutes serious relatively country, a large amount of untreated waste water directly has been discharged in the rivers,lakes and seas to be gone, caused the pollution of water resources, contradiction between shortage of water resources and water are seriously polluted is more and more sharp-pointed, how finding one can realize that sewage disposal is innoxious, can be the focus that Environmental Protection in China circle is paid close attention to its processing approach that rationally utilizes again simultaneously.And the processing of the organic waste water of the high density that middle-size and small-size food mfg enterprise is produced difficult point especially, at present, the organic waste water that they handle high density generally all adopts anaerobic baffled reaction method (ABR), throw in EM bacterium facture and sequencing batch active sludge (SBR), this several method all is good for the treatment effect of high concentrated organic wastewater, but invest higher, working cost is big and manage loaded down with trivial details, the soil filtration treatment technology investment cost that has now occurred is lower, but it generally is used for the processing of sanitary wastewater, relate to for the processing of trade effluent is rare, and also there is easy obstruction in common soil filtration technology at present, floor space is big, relative with the monitoring difficulty with utilization of the recovery of water outlet, intrasystem nitrifying process is difficulty also.
Summary of the invention
The purpose of this invention is to provide a kind of, can effectively remove COD, BOD, SS and ammonia nitrogen content in the waste water, operational administrative is simple and convenient, is not easy to stop up, floor space is little, is adapted to the high concentrated organic wastewater treatment system of middle-size and small-size foodstuff manufacturing enterprise.
The objective of the invention is to be achieved through the following technical solutions: the treatment system of this high concentrated organic wastewater comprises flocculation sedimentation tank, filtering basin and soil filtration device; Described soil filtration device comprises the housing made from anti-seepage material, is Rinsing Area in the intravital bottom of shell, and there is water outlet its end, is followed successively by load-bearing pervious bed, gravel bed, sealing coat and preparation pedosphere above the Rinsing Area; Sealing coat is that a kind of the aperture is arranged is the flexible corrosion resistant material in 0.1-3mm space, is a refining plant in the edaphic middle and upper part of preparation, is equipped with water spraying pipe in refining plant, and filtering basin are connected with water spraying pipe by water feed apparatus; The soil filtration device is positioned on the ground; Water feed apparatus is water pump and the water inlet pipe that is communicated with it; Described refining plant is for falling trapezoidal purification ditch, purify the ditch bottom power impervious barrier of attaching most importance to, be filled with fine sand on the gravity impervious barrier, the water spraying pipe that is connected with water feed apparatus is arranged on the fine sand, apron hole is arranged on water spraying pipe, around the water spraying pipe is gravel, is equipped with tectum on the gravel, is preparation soil on the tectum; Tectum is that a kind of the aperture is arranged is that the flexible corrosion resistant material in 0.1-3mm space is made.
The load-bearing pervious bed is 10-25cm apart from the distance of the inner bottom surface of housing in the described soil filtration device, and the thickness of gravel bed is 10-20cm; The thickness of fine sand is 10-30cm in the described purification ditch, and the upper base of purification ditch is with the length of going to the bottom and highly be respectively 50-100cm, 30-80cm, reach 40-60cm.
The load-bearing pervious bed is made with the bamboo basketry, sealing coat is flexible corrosion resistant fabric, and the voidage of the preparation soil in preparation pedosphere in the soil filtration device and the purification ditch is that the saturated hydraulic conductivity of 50%-60%, soil is that 80-100cm/d, the soil organism are 15%~20%.
Flocculation sedimentation tank in the treatment system of the present invention and filtering basin, can effectively remove the suspended substance in the waste water, prevented the obstruction in follow-up soil filtration system, and make that COD has also had reduction to a certain degree in the waste water, reduced the organic loading of soil filtration system, after waste water is thrown in the soil filtration system, because the intra-zone oxidation effect of this system about depth of soil 30cm is good, the nitrifier enrichment, therefore the ammonia nitrogen in the waste water can be converted into nitric nitrogen rapidly, and microorganism is also constantly decomposed the organism in the waste water; The specific soil of human configuration in the system has certain organic content and good hollow billet wetting property, for microorganism provides good living environment, makes the nitric nitrogen in the system be converted into gas N under the effect of denitrifying bacteria
2O, N
2Deng, then be exhausted from system; In the process of diafiltration, remaining organic pollutant is decomposed by the aerobic microbiological mineralising in the soil, and sewage can well be purified.The contriver once utilized this equipment to do overtesting in Xinzheng City, Henan Food Co., Ltd, COD, ammonia nitrogen, the SS concentration of this institute of enterprise waste discharge are respectively 3683.7mg/L, 81.7mg/L, 355.4mg/L, after system handles of the present invention, go out water concentration and be respectively 624.4mg/L, 11.1mg/L, 24.3mg/L, clearance reaches 83%, 87% respectively, more than 93%, the final outflow water of ammonia nitrogen and SS reaches " integrated wastewater discharge standard " (GB8978-1996) first discharge standard, and COD can satisfy three grades of emission standards.Because this soil filtration device of the present invention generally on the ground, water after treatment flows out from water outlet to be convenient to recycle, so the service condition of the equipment in this system is easy to observe also easy handling and management.It also has the little advantage of compact construction floor space in addition.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the sectional view of A-A among Fig. 1;
Fig. 3 is the structural representation of soil filtration device among the embodiment 3;
Fig. 4 is the structural representation of embodiment 4.
Embodiment
Embodiment 1: the treatment system of this high concentrated organic wastewater, the filtering basin 2 that comprise flocculation sedimentation tank 1, are communicated with it and the soil filtration device that is communicated with filtering basin 2.
The soil filtration device, comprise that the outside is with brick, the internal surface housing 5 of cement seal, the inner chamber of housing 5 is rectangular parallelepipeds, its wide L is 50cm, thickness D is 150cm, the bottom of inner chamber is a Rinsing Area 12, and there is water outlet 13 its end, is that load-bearing pervious bed 11, the load-bearing pervious bed made from the bamboo basketry 11 is 10-15cm apart from the distance of the inner bottom surface of housing 5 above the Rinsing Area 12, on load-bearing pervious bed 11, lay the thick gravel bed 10 of 10-13cm, preparation pedosphere 9 is arranged on it; Be provided with sealing coat 10 ' at gravel bed 10 and preparation between the pedosphere 9, sealing coat 10 ' is that a kind of aperture that is covered with is that the flexible corrosion resistant material in 0.1-0.9mm space is made; In the edaphic middle and upper part of preparation a refining plant is arranged, refining plant in the present embodiment is the purification of falling a trapezoid ditch Q, its upper base is respectively 50cm, 30cm with the length of going to the bottom, height is 40cm, the bottom that purifies ditch Q is the gravity impervious barrier made from anti-seepage material 8, be filled with the thick fine sand layer of 10cm 4 on the gravity impervious barrier 8, a water spraying pipe 7 that is covered with apron hole is arranged above the fine sand layer 4, it around the water spraying pipe 7 gravel 6 of filling, gravel 6 outsides are equipped with tectum 6 ', are preparation soil 9 ' on it; Be covered with the aperture that the aperture is 0.1-2.5mm on the tectum 6 ', tectum 6 ' is made with flexible corrosion resistant material; Be provided with vibratory screening apparatus in the filtering basin 2 in the present embodiment, filtering basin 2 by water pump 3 be connected with water spraying pipe 7 in the soil filtration device again with the water inlet pipe 3 ' of its connection.Promptly water after filtering enters water spraying pipe 7 by water pump 3 and the water inlet pipe 3 ' that is communicated with it.
The voidage of the preparation soil 9 ' in the soil filtration device in preparation pedosphere 9 and the purification ditch is 50%-55%, and the saturated hydraulic conductivity of soil is 15%~17% for the 80cm/d soil organism.This preparation soil can adopt soil and straw compost blending to make.
Embodiment 2: housing 5 inner chambers of the soil filtration device of the treatment system of the high concentrated organic wastewater in the present embodiment are rectangular parallelepipeds, its wide L is 100cm, thickness is 180cm, load-bearing pervious bed 11 is 16-19cm apart from the distance of the inner bottom surface of housing 5, lays the thick gravel bed 10 of 18cm on load-bearing pervious bed 11; Sealing coat 10 ' between gravel bed 10 and preparation pedosphere 9 is a kind of glasscloth that the aperture is the 1-1.5mm space that is covered with; Refining plant in the edaphic middle and upper part of preparation also is the purification of falling a trapezoid ditch Q, its upper base is respectively 70cm, 45cm with the length of going to the bottom, height is 50cm, the bottom that purifies ditch Q is the gravity impervious barrier made from glass-reinforced plastic material 8, be filled with the thick fine sand layer of 15cm 4 on the gravity impervious barrier 8, a water spraying pipe 7 that is covered with apron hole is arranged above the fine sand layer 4, and the gravel 6 around the water spraying pipe 7 is that a kind of the aperture is arranged is the glasscloth in 1.2-2mm space with preparing tectum 6 ' between the soil 9 ' on it;
The voidage of the preparation soil 9 ' in the soil filtration device in preparation pedosphere 9 and the purification ditch is 52%, and the saturated hydraulic conductivity of soil is 90cm/d, and the soil organism is 19%.Other structures and the equipment that adopted are all with identical with embodiment 1 in the present embodiment.
Embodiment 3: the wide L of the soil filtration device middle shell 5 of the treatment system of the high concentrated organic wastewater in the present embodiment is 80cm, lays the thick gravel bed 10 of 14cm on load-bearing pervious bed 11; Refining plant in the preparation pedosphere in housing 5, it is a cuboid, wide L ' is 60cm, the thick 180cm of being, height is 45cm, the bottom of refining plant is to make with hard plastics, be filled with the thick sand of 12cm on the gravity impervious barrier 8, be provided with a filter sieve in the filtering basin 2 in the present embodiment.
The voidage of the preparation soil 9 ' in the soil filtration device in preparation pedosphere 9 and the refining plant is 56%, and the saturated hydraulic conductivity of soil is 100cm/d, and the soil organism is 16%.Interpolation turfy soil and wood chip blending are made in this preparation soil employing soil.Other structures and material are all identical with embodiment 1 in the present embodiment.
Embodiment 4: housing 5 inner chambers of the soil filtration device of the treatment system of this high concentrated organic wastewater are rectangular parallelepipeds, its wide L is 150cm, thickness is 250cm, load-bearing pervious bed 11 is 20-25cm apart from the distance of the inner bottom surface of housing 5, lays the thick gravel bed 10 of 16-20cm on load-bearing pervious bed 11; Sealing coat 10 ' between the pedosphere 9 is that a kind of aperture that is covered with is that the flexible corrosion resistant material in 2-3mm space is made at gravel bed 10 and preparation; Refining plant in the edaphic middle and upper part of preparation also is the purification of falling a trapezoid ditch Q, its upper base is respectively 100cm with the length of going to the bottom, 80cm, height is 60cm, the bottom that purifies ditch Q is the gravity impervious barrier 8 that water mud is made, be filled with the thick fine sand layer of 20cm 4 on the gravity impervious barrier 8, two water spraying pipe that are covered with apron hole 7 that parallel are arranged above the fine sand layer 4, width between centers d between two water spraying pipe is 30cm, all are the gravels 6 of filling around the water spraying pipe 7, gravel 6 is that a kind of the aperture is arranged is the nylon braid in 2-3mm space with preparing tectum 6 ' between the soil 9 ' on it; Be provided with filtering net in the filtering basin 2 in the present embodiment, filtering basin 2 by water pump 3 be connected with two water spraying pipe 7 in purifying ditch Q with the water inlet pipe 3 ' of its connection.Promptly water after filtering enters two water spraying pipe 7 by water pump 3 and the water inlet pipe 3 ' that is communicated with it.
The voidage of the preparation soil 9 ' in the soil filtration device in preparation pedosphere 9 and the purification ditch is 57%-60%, and the saturated hydraulic conductivity of soil is 18%~20% for the 85cm/d soil organism.This preparation soil can adopt in the soil and to add turfy soil and make.Other structures in the present embodiment are identical with embodiment 1.
Organic wastewater treating system among the present invention, the wastewater flow rate that can handle as required is provided with a soil filtration device also can two or more soil filtration devices, and the water spraying pipe 7 in each soil filtration device all should be connected with the water feed apparatus of transport wastewater; The thickness of refining plant can be selected arbitrarily according to the needs of handling wastewater flow rate, the thickness of selecting for use in the foregoing description, also can adopt 100cm, 300cm or bigger thickness; The internal diameter of the water spraying pipe 7 in the refining plant can adopt the pipe of 15-30mm.Refining plant and the top of soil filtration dress can be planted some little grass.
The soil filtration device also can be trapezoidal.
The treatment system of this organic waste water to the process of wastewater treatment is: the waste water in the high concentrated organic wastewater storage pool is put into flocculation sedimentation tank 1, in flocculation sedimentation tank 1, throw in flocculation agent, and to stir, in the flocculation sediment process, many tiny mud granule absorption also are intertwined, form larger particles, COD, BOD, the ammonia nitrogen in the waste water also all has reduction in various degree simultaneously.After flocculation sediment is finished, waste water is removed most SS by the filter sieve in the filtering basin 2, after filtering water is sent into water in the water spraying pipe 7 of soil filtration system 5 inside by water pump by water inlet pipe 3 ' in the filtering basin 2, by water spraying pipe 7, waste water is thrown in the refining plant uniformly, when sewage stagnate collect gravity impervious barrier 8 after, the dependence soil capillary climbs, locating ammonia nitrogen in the waste water about the 30cm of soil surface can be converted into nitric nitrogen rapidly (oxidation effect of this intra-zone is good, the nitrifier enrichment), and water spraying pipe around gravel 6 and the microorganism of water spraying pipe outside surface also constantly the organism in the waste water is being decomposed; Waste water is under the effect of the siphon of soil and gravity, continuously permeate to the soil stratum, soil is the specific soil of human configuration in the system, have certain organic content and good hollow billet wetting property, can be microorganism good living environment is provided, the nitric nitrogen in the system is converted into gas N under the effect of denitrifying bacteria
2O, N
2Deng, finally discharge system, reach the purpose of removal.In the process of diafiltration, remaining organic pollutant is decomposed by the aerobic microbiological mineralising in the soil.Sewage finally through the gravel bed 10, the bearing stratum 11 that enter bottom in the housing chamber after purifying, enter in the Rinsing Area 12, then by rising pipe 12 discharge systems and be reused.
Soil filtration device operated by rotary motion of the present invention on the ground; Also can according to specifically total system is arranged on more than the ground or below, if rising pipe 12 locates below ground level, then should solve the discharge problem of water after treatment well.
Claims (3)
1, a kind of treatment system of high concentrated organic wastewater comprises flocculation sedimentation tank, filtering basin and soil filtration device; Described soil filtration device comprises the housing made from anti-seepage material, is Rinsing Area in the intravital bottom of shell, and there is water outlet its end, is followed successively by load-bearing pervious bed, gravel bed, sealing coat and preparation pedosphere above the Rinsing Area; Sealing coat is that a kind of the aperture is arranged is the flexible corrosion resistant material in 0.1-3mm space, is a refining plant in the edaphic middle and upper part of preparation, is equipped with water spraying pipe in refining plant, and filtering basin are connected with water spraying pipe by water feed apparatus; The soil filtration device is positioned on the ground; Water feed apparatus is water pump and the water inlet pipe that is communicated with it; It is characterized in that: described refining plant is for falling trapezoidal purification ditch, purify the ditch bottom power impervious barrier of attaching most importance to, be filled with fine sand on the gravity impervious barrier, the water spraying pipe that is connected with water feed apparatus is arranged on the fine sand, apron hole is arranged on water spraying pipe, around the water spraying pipe is gravel, is equipped with tectum on the gravel, is preparation soil on the tectum; Tectum is that a kind of the aperture is arranged is that the flexible corrosion resistant material in 0.1-3mm space is made.
2, the treatment system of high concentrated organic wastewater according to claim 1 is characterized in that: the load-bearing pervious bed is 10-25cm apart from the distance of the inner bottom surface of housing in the described soil filtration device, and the thickness of gravel bed is 10-20cm; The thickness of fine sand is 10-30cm in the described purification ditch, and the upper base of purification ditch is with the length of going to the bottom and highly be respectively 50-100cm, 30-80cm, reach 40-60cm.
3, the treatment system of high concentrated organic wastewater according to claim 2, it is characterized in that: the load-bearing pervious bed is made with the bamboo basketry, sealing coat is flexible corrosion resistant fabric, and the voidage of the preparation soil in preparation pedosphere in the soil filtration device and the purification ditch is that the saturated hydraulic conductivity of 50%-60%, soil is that 80-100cm/d, the soil organism are 15%~20%.
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CN200610128370A CN100586880C (en) | 2006-12-12 | 2006-12-12 | High concentration organic wastewater processing system |
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CN200610128370A CN100586880C (en) | 2006-12-12 | 2006-12-12 | High concentration organic wastewater processing system |
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CN103466907B (en) * | 2013-10-11 | 2014-09-17 | 内蒙古日清源环保科技有限责任公司 | No-discharge sewage treatment system |
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Non-Patent Citations (2)
Title |
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污水的地下渗滤处理***在农村应用的探讨. 何守水.山西建筑,第31卷第12期. 2005 |
污水的地下渗滤处理***在农村应用的探讨. 何守水.山西建筑,第31卷第12期. 2005 * |
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