CN202390288U - Manual composite earth layer strengthening elimination of endocrine disrupter - Google Patents
Manual composite earth layer strengthening elimination of endocrine disrupter Download PDFInfo
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- CN202390288U CN202390288U CN201120537904XU CN201120537904U CN202390288U CN 202390288 U CN202390288 U CN 202390288U CN 201120537904X U CN201120537904X U CN 201120537904XU CN 201120537904 U CN201120537904 U CN 201120537904U CN 202390288 U CN202390288 U CN 202390288U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Treatment By Sorption (AREA)
Abstract
A manual composite earth layer strengthening elimination of endocrine disrupter sequentially comprises a degradation layer, an adsorption layer and a filter supporting layer from top to bottom, wherein the packing medium of the degradation layer comprises natural soil, artificially improved soil or permeability soil obtained by mixing soil and river sand so as to strengthen the aerobic degradation of the endocrine disrupter; the medium of the adsorption layer comprises a hard adsorption material of large size which can well adsorb the endocrine disrupter, thus further adsorbing and eliminating the endocrine disrupter and other pollutant in percolate; and the medium of the filter supporting layer comprises thick gravels and cobbles so as to support the upper packing medium and filter thin grain pollutant. By adopting the system, over 85% of endocrine disrupter can be eliminated, the hydraulic loading is higher, the field requirement is low, and the manual composite earth layer is applicable to advanced treatment of slightly polluted water or pretreatment of underground recharge of reuse water.
Description
Technical field
The utility model relates to a kind of polluted water land treatment system, particularly strengthens the artificial composite earth layer that endocrine disrupter is removed, and is applicable to the advanced treatment of micropollutant water or as the underground pre-treating technology that recharges of reuse water, belongs to field of environment engineering technology.
Background technology
China is the country of a serious water shortage, and shortage of water resources has become one of important factor of restriction society and economy coordinated development.Reuse of wastewater is the effective way that solves the shortage of water resources problem, also is the powerful guarantee that satisfies the great demand of national water resources sustainable use.But owing to have diversified toxic substance and pathogenic micro-organism in the sewage, it can not be ignored the threat that the reuse water safe utilization brings.Wherein, environment incretion interferent (EDCs) is a kind of emerging Micropollutants, becomes the research forward position and the focus in water surrounding field in recent years.
Endocrine disrupter is meant and can keeps self balance and synthetic, the secretion of regulating the growth course natural hormone, transportation, combination, reaction and metabolism etc. in biology or the human body through disturbing, thus the xenobiotics that the function of reproduction, nerve and the immunity system etc. of biology or human body is exerted an influence.EDCs has following four characteristics: concentration is lower in environment; Structure is more stable; Has the internal secretion interference; Low concentration can produce bigger harm.EDCs comprises natural and estrogens, induced by alkyl hydroxybenzene, phthalate and polychlorinated biphenyl multiple compounds such as (PCBs) synthetic, and wherein estrogens and induced by alkyl hydroxybenzene are two types of the highest EDCs of ecological risk in sewage or the reuse water.Main estrogens EDCs has oestrone (E1), Theelin,dihydro-(E2), trihydroxy-oestrin (E3) and ethinylestradiol (EE2) in the urban wastewater treatment firm water outlet, and induced by alkyl hydroxybenzene EDCs has NP (NP), octyl phenol (OP) and dihydroxyphenyl propane (BPA).Its internal secretion interference uses Theelin,dihydro-(E2) equivalent concentration of estrogen activity to characterize more.
Land treatment system is a kind of sewage water treatment method based on the natural, ecological principle, by with soil being the purpose that effects such as main medium and the physics between the pollutent, chemistry, biology reach purification of water quality.With the endocrine disrupter is example, because most of EDCs polarity are weak, hydrophobicity is stronger, has higher native water partition coefficient, and its main removal mechanisms at work in land treatment system is adsorption and biological degradation (being main with aerobic degradation especially).
It is few that the soil treatment technology has initial cost, and treatment effect is good, and working cost is low, the advantage of simple and convenient management, thereby developed rapidly.Artificial composite earth layer belongs to a kind of of soil processing.Traditional land treatment system has following 3 deficiencies at present:
1. existing land treatment system is mainly paid close attention to conventional contamination indexs such as COD, BOD, SS, nitrogen, phosphorus, and the technology that, harm big endocrine disrupter low to concentration strengthened removal still is in space state.
2. there are shortcomings such as hydraulic load is low, floor space big, easy obstruction in existing land treatment system, and its key constraints is the diafiltration property of soil media.
3. existing land treatment system is many to be to handle filtration media with the natural land, and the factors such as topographic and geologic, soil and bury of groundwater in place are all had specific requirement, the big limitations of these factors the application of soil treatment technology.
Summary of the invention
To the deficiency that above-mentioned prior art exists, the purpose of the utility model is to provide a kind of artificial composite earth layer that endocrine disrupter is removed of strengthening, and has processing efficiency height, floor space is little, site requirements is low characteristics.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
Strengthen the artificial composite earth layer that endocrine disrupter is removed, comprise 3 layers, be respectively degraded layer 2, adsorption layer 3 from top to bottom and filter supporting layer 4;
It is the natural soils that are rich in mikrobe, good penetrability that described degraded layer 2 is filled medium, i.e. organic content＞15g/kg, total plate count＞10
7The natural soils of CFU/g, infiltration rate＞0.5m/d; Or add the artificial modified soil of carbon source or nitrogenous source or endocrine disrupter efficient degrading bacteria; Wherein carbon source refers to the mixture of glucose, SANMALT-S, ight soil or three's arbitrary proportion; Nitrogenous source refers to the mixture of urea, ammonium salt, amino acid or three's arbitrary proportion, and the dosage of carbon source, nitrogenous source is 0～10% of a soil dry weight; Or soil and river sand are by weight 1～5: 1 mixes the ventilation property soil that obtains.
Described adsorption layer 3 is filled medium for being that 0.2～2mm, Mohs' hardness are 3.5～7 sorbing material to the good particle diameter of endocrine disrupter absorption property, comprises in zeolite, haydite and the perlite one or more, and ratio is any during several kinds of mixing.
It is coarse gravel or cobble that described filtration supporting layer 4 is filled media, is divided into three gratings: little 0.2～2cm, in 2～5cm, big 5～8cm; During laying, from top to bottom, the volume ratio of three gratings is 1: 2～4: 8～12 from small to large.
Described degraded layer 2, adsorption layer 3, filter supporting layer 4 thickness and be respectively 30～70cm, 50～100cm and 30～70cm.
Described degraded layer 2 bottoms or middle unsaturated zone or the aerating apparatus of adding.
Described filtration supporting layer 4 bottoms are provided with the loading plate of a band permeable hole, perhaps lay and ooze water shoot.
Compare prior art, the beneficial effect of the utility model is:
1. the native system effluent quality is good; And strengthen the removal of endocrine disrupter; To the clearance of main endocrine disrupter in sewage or the reuse water water more than 85%, to the comprehensive measurement index of internal secretion interference---the centinormal 1 clearance of Theelin,dihydro-is 85%～90%.
2. the hydraulic load of native system is compared traditional land treatment system 100～200L/m such as hollow billet soaking method
2The treatment capacity of d exceeds 3～10 times, handles the land area minimizing 65%～90% that the identical water yield need take.Because less relatively, the artificial-strengthening biological degradation of degraded layer thickness of soil, thereby alleviated blockage problem.
3. low to site requirements, applied widely.Native system degraded layer soil consumption is less relatively, and kind can be chosen flexibly; Adsorption layer is filled medium wide material sources and cheap, has increased the use range of native system greatly.
Description of drawings
Fig. 1 is the structural representation of the artificial composite earth layer of the utility model.
Fig. 2 is the structural representation of the embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is explained further details.
Referring to Fig. 1, Fig. 2, strengthen the artificial composite earth layer that endocrine disrupter is removed, comprise 3 layers, be respectively degraded layer 2, adsorption layer 3 from top to bottom and filter supporting layer 4, degraded layer 2 functions are held back suspended particle simultaneously for strengthening the aerobic degradation of endocrine disrupter; Adsorption layer 3 functions are that further other pollutents in endocrine disrupter and the upper strata percolate are removed in absorption; Filter the filling medium of the function of supporting layer 4, and filter the fine particle pollutent in the percolate for support top.
It is the natural soils that are rich in mikrobe, good penetrability that described degraded layer 2 is filled medium, i.e. organic content＞15g/kg, total plate count＞10
7The natural soils of CFU/g, infiltration rate＞0.5m/d; Or add the artificial modified soil of carbon source or nitrogenous source or endocrine disrupter efficient degrading bacteria; Wherein carbon source refers to the mixture of glucose, SANMALT-S, ight soil or three's arbitrary proportion; Nitrogenous source refers to the mixture of urea, ammonium salt, amino acid or three's arbitrary proportion, and the dosage of carbon source, nitrogenous source is 0～10% of a soil dry weight; Or soil and river sand are by weight 1～5: 1 mixes the ventilation property soil that obtains.
Described adsorption layer 3 is filled medium for being that 0.2～2mm, Mohs' hardness are 3.5～7 sorbing material to the good particle diameter of endocrine disrupter absorption property, comprises in zeolite, haydite and the perlite one or more, and ratio is any during several kinds of mixing.
It is coarse gravel or cobble that described filtration supporting layer 4 is filled media, is divided into three gratings: little 0.2～2cm, in 2～5cm, big 5～8cm; During laying, the volume ratio of three gratings is 1: 2～4: 8～12 from small to large.
Described degraded layer 2, adsorption layer 3, filter supporting layer 4 thickness and be respectively 30～70cm, 50～100cm and 30～70cm.
Described degraded layer 2 bottoms or middle unsaturated zone or the aerating apparatus of adding.
Described filtration supporting layer 4 bottoms are provided with the loading plate of a band permeable hole, perhaps lay and ooze water shoot.
Concrete grammar is: on the vertical direction of artificial composite earth layer; Be provided with leachate collection monitoring device 5 and monitoring mouth 7 along journey; Leachate collection monitoring device 5 is used for enrichment along the journey percolate; With the test concentration and the activity of endocrine disrupter of trace wherein, monitoring mouthfuls 7 is used for monitoring conventional indexs such as the temperature, soil water potential of soil layer.
Pending sewage or reuse water are delivered to artificial composite earth layer top by sump pump 8, are evenly distributed to the degraded layer top by water distributor 10, form sewage layer 1, exceed the water inlet that designs top water-level and are discharged by riser 6.
The water purification that artificial composite earth layer oozes out forms the charge for remittance layer through the porous loading plate of filtering the supporting layer bottom and is extracted out by clarified water pump 9 below soil layer, perhaps water outlet directly gets into and oozes water shoot by clarified water pump 9 extractions.
Can adopt dual mode during the utility model operation: the one, to basin irrigation and the dried mode that hockets that falls, wet-dry ratio gets 1: 2～4, promptly basins irrigation operation 1 day, and dried the stopping that fall stopped 2～4 days, and the cycle of operation is 3～5 days; The 2nd, continuous operation is promptly decided head continuously and is basined irrigation, and require degraded layer 2 to set up unsaturated zone or aerating apparatus this moment.
Need monitoring the rate of output water and effluent quality in the utility model operational process,, suitably remove degraded layer top layer 1～5cm, be replaced by new soil, 1 year 3～5 times when infiltration rate during less than 0.1m/d; Whether the inspection adsorption layer is saturated during the water quality rapid deterioration, if then change the adsorption layer filler.
Embodiment analyzes
It is to pick up from that Beijing goes in in a big way native farmland, is rich in organic matter, content of microorganisms is high, the natural topsoil of endocrine disrupter good degrading effect that the degraded layer 2 of artificial composite earth layer is filled media, and filling thickness is 50cm, and the filling unit dry weight is 1.35g/cm
3It is the zeolite of 1～2mm that adsorption layer is filled medium employing particle diameter, and filling thickness is 50cm, and the filling unit dry weight is 1.21g/cm
3It is coarse gravel or cobble that supporting layer is filled medium, is divided into three gratings: little 0.2～2cm, in 2～5cm, big 5～8cm, volume ratio is 1: 3: 10 from small to large, filling thickness is 30cm.
Reuse water with Beijing sewage work serves as to supply the source of trying the water, and COD concentration is 11～15mg/L, SS＜5mg/L, total nitrogen 12～18mg/L, total phosphorus 0.1～0.2mg/L.Operation scheme is to basin irrigation and the dried mode that hockets that falls, and wet-dry ratio was got 1: 2, promptly basined irrigation operation 1 day, and dried the stopping that fall stopped 2 days, and the cycle of operation is 3 days.
The artificial composite earth layer treatment system of present embodiment, as shown in table 1 to the removal effect of water inlet total organic carbon (TOC) and main endocrine disrupter and estrogen activity.
The artificial composite earth layer treatment system of table 1 Inlet and outlet water water quality
Can be found out that by table 1 TOC of yielding water is reduced to below the 7.5mg/L, the clearance of main endocrine disrupter is 87%～100%, and estrogen activity reduces by 89%, and the toxicity of endocrine disrupter in the water and ecological risk are reduced greatly.This shows that this manual work composite earth layer treatment system not only can remove conventional organic pollutant, and the endocrine disrupter of trace in the water is had strong removal ability.
Above embodiment does not limit the practical range of the utility model only in order to the embodiment of explanation the utility model.Equivalent variations and modification that all claims that does not depart from the utility model are done must belong to the protection domain of the utility model.
Claims (4)
1. strengthen the artificial composite earth layer that endocrine disrupter is removed, it is characterized in that, comprise 3 layers, be respectively degraded layer (2), adsorption layer (3) from top to bottom and filter supporting layer (4).
2. the artificial composite earth layer that reinforcement endocrine disrupter according to claim 1 is removed is characterized in that, described degraded layer (2), adsorption layer (3) and filtration supporting layer (4) thickness are respectively 30～70cm, 50～100cm and 30～70cm.
3. the artificial composite earth layer that reinforcement endocrine disrupter according to claim 1 is removed is characterized in that, described degraded layer (2) bottom or middle unsaturated zone or the aerating apparatus of adding.
4. the artificial composite earth layer that reinforcement endocrine disrupter according to claim 1 is removed is characterized in that, described filtration supporting layer (4) bottom is provided with the loading plate of a band permeable hole, perhaps lays and oozes water shoot.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130115A (en) * | 2015-08-27 | 2015-12-09 | 清华大学 | Treatment system and method and experimental apparatus for removing BPA from water by high hydraulic load |
| CN105130112A (en) * | 2015-08-27 | 2015-12-09 | 清华大学 | Composite soil layer system, method and experimental apparatus for removing typical endocrine disruptors from water |
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2011
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130115A (en) * | 2015-08-27 | 2015-12-09 | 清华大学 | Treatment system and method and experimental apparatus for removing BPA from water by high hydraulic load |
| CN105130112A (en) * | 2015-08-27 | 2015-12-09 | 清华大学 | Composite soil layer system, method and experimental apparatus for removing typical endocrine disruptors from water |
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