CN101508507A - Ecological-artificial percolation filtration water treatment system and method for dispersion type domestic wastewater - Google Patents
Ecological-artificial percolation filtration water treatment system and method for dispersion type domestic wastewater Download PDFInfo
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- CN101508507A CN101508507A CNA2009100429590A CN200910042959A CN101508507A CN 101508507 A CN101508507 A CN 101508507A CN A2009100429590 A CNA2009100429590 A CN A2009100429590A CN 200910042959 A CN200910042959 A CN 200910042959A CN 101508507 A CN101508507 A CN 101508507A
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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
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Abstract
The invention relates to an ecological-artificial percolating water treatment system and an ecological-artificial percolating water treatment method for dispersed type domestic sewage. The system consists of an organic filler layer, a capillary water interdiction layer, a saturated belt seepage layer and a supporting layer from the top down, wherein the organic filler layer is formed by mixed peat soil, ceramic aggregates and natural sand, and a certain amount of earthworms are put into the layer and a certain amount of reeds are planted; the capillary water interdiction layer consists of crushed stones with the grain size of 5 to 30 mm; the saturated belt seepage layer consists of mixed natural sand; and the supporting layer consists of crushed stones with the grain size of 5 to 40mm. The method comprises the following steps: after removing macroaggregate suspended matters in the sewage, sending the sewage into a regulation tank for stabilizing the water quality; and then distributing water for the system and operating the system under the conditions of a wet/dry ratio of 1:3 and a hydraulic load of 1.5m<3>/m<2>.d . The system and the method have the characteristics of low investment, simple management and maintenance and stable outputted water quality. The invention can effectively reduce the construction and operation cost for the treatment of the dispersed type domestic sewage, and is suitable for the treatment of the dispersed type domestic sewage in expressway toll stations, service areas, towns, and the like.
Description
Technical field
The present invention relates to the treatment system and the method for dispersion type domestic wastewater, belong to sewage disposal technology in the environment protection.
Technical background
For many years, the center of gravity of China's sanitary sewage disposal and has been ignored the processing of dispersion type domestic wastewaters such as freeway toll station, service area always on municipal sewage treatment.Municipal sewage plant's existing multiple maturation process of disposing of sewage is available, as traditional activated sludge process, oxidation ditch, A/O method etc.; Mud refluxes, mixed-liquor return but have in these technologies, also must regularly discharge excess sludge, and employing dosing and mechanical dehydration technology, could guarantee treatment effect, all these needs high investment and working cost and is equipped with managerial personnel troop, and this processing to dispersion type domestic wastewaters such as freeway toll station, service areas can't realize.
Processing at the dispersed sanitary sewage of this type, in recent years, Chinese scholars has been carried out a series of research and has been obtained some important achievement, artificial rapid infiltration system (Constructed RapidInfiltration is called for short CRI) then is the concentrated reflection of these achievements with ecological diafiltration technology (Ecology Filter).Artificial rapid infiltration system (CRI) belongs to a type that the soil is handled, it is meant the surface that controlledly sewage is invested in the filtration media of manually constructing, make its different physics, chemistry and biological action of experience in the process of infiltration downwards, finally reach the process of sewage purification target.Its core be adopt penetrating quality preferably natural river sand, haydite, coal gangue etc. replace natural soil layer for main filtration media, thereby improved hydraulic load greatly (1～3m/d), strengthened practicality.The CRI system has overcome the low shortcoming of traditional land treatment system hydraulic load, has kept that its equipment is simple, less investment, advantage such as energy consumption is low and effluent quality is good, thereby has wide development prospect.Compare with the CRI system, the utilization of ecological diafiltration technology is filter mediums such as natural river sand, haydite, coal gangue in the artificial ecosystem replaced C RI system that forms of the microfauna of representative with microorganism and earthworm, realizes the degraded of sewage.The action principle of earthworm and ecological filter mainly is to utilize the activity of earthworm to realize the filter tank ventilation oxygen-supplying and solve the filter tank blockage problem.In addition, by get the on the spot reduction that food can realize in biological filter operational process excess sludge of earthworm, save sludge treatment structures and corresponding working cost thereof to biological sludge in the filter tank.
Though single artificial rapid infiltration system and earthworm and ecological filtration system have more scholar to carry out correlative study at home and abroad really, yet, in the sewage disposal of actual engineering, single artificial rapid infiltration system and earthworm and ecological filtration system obviously exist technological deficiency separately, it is embodied in: (1) artificial rapid diafiltration technology exists the easy blocking problem of filtrate in operational process, this causes, and system's hydraulic load is lower, floor space is big, and limits polluted water land to a certain extent and handle and the development that utilizes; (2) with the earthworm be the less stable of the ecological diafiltration technological system operation of representative, generally need the time of some months just can reach effect preferably, and system is relatively poor to the removal effect of nitrogen, phosphorus in the sewage, in the face of increasingly serious body eutrophication problem, independent ecological diafiltration technology also haves much room for improvement.First contriver of the present invention and research group thereof are through conscientious analysis and summary, in line with the principle that solves engineering problem, on the basis of single artificial rapid diafiltration technology and earthworm and ecological diafiltration technology, ecological-artificial diafiltration technology (Eco-CRI) has been proposed, though this technology does not have bigger innovation in theory, but in engineering is used, still belong to the first time, there is no similar case history report both at home and abroad.
Summary of the invention
The objective of the invention is, deficiency at the prior art existence, a kind of ecological-artificial percolation filtration water treatment system and method for dispersion type domestic wastewater are proposed, it is on the basis of original artificial rapid diafiltration technology, ecological diafiltration technology, the less investment that overcomes its original technology shortcoming and restricted condition and research and develop, management maintenance are simple, the technology of stable effluent quality, can effectively reduce construction and working cost that dispersion type domestic wastewater is handled, be suitable for the processing of dispersion type domestic wastewaters such as freeway toll station, service area, small towns.
One of technical scheme of the present invention is that the ecological-artificial percolation filtration water treatment system of described dispersion type domestic wastewater is formed by following four layers from top to bottom:
The first layer: organic filler layer, thickness are 38cm-42cm; This layer is mixed by the natural sand of the haydite of peat soil, particle diameter 2mm-3mm, particle diameter 1.5mm-2.0mm and forms, and the volume ratio of peat soil, haydite, natural sand is that 5.8-6.2:1:2.8-3.2 (is the peat soil volume: the haydite volume: natural sand volume=5.8-6.2:1:2.8-3.2; Press 1500-1800 bar/m
2Quantity in this organic filler layer, throw in earthworm, and be the spacing plantation hydrobiont reed of 500cm with a spacing at this layer;
The second layer: capillary water barrier layer, thickness are 18cm-22cm; This layer is that the rubble of 5mm-30mm is formed by particle diameter;
The 3rd layer: zone of saturation infiltration layer, thickness are 58cm-62cm; Natural sand and the particle diameter that by particle diameter is 0.5mm-1.5mm is that the vermiculite of 2mm-4mm mixes and forms, and the volume ratio of natural sand and vermiculite is that 7:2.8-3.2 (is the natural sand volume: vermiculite volume=7:2.8-3.2).
The 4th layer: supporting layer, thickness are 28cm-32cm; By particle diameter is that the rubble of 5mm-40mm is formed.
Two of technical scheme of the present invention is that the ecological-artificial percolation filtration water treatment process of described dispersion type domestic wastewater is carried out as follows:
1, sanitary sewage enters equalizing tank, stabilizing water quality behind thickness grid interception macrobead suspended substance;
2, open sewage pump, the sewage in the extraction equalizing tank is to described ecological-artificial percolation filtration water treatment system water distribution, and the water distribution time is 110 minutes-130 minutes, discharge 9.5m
3/ h-10.5m
3/ h; Described water distribution finishes, and closes sewage pump; Ecological-artificial percolation filtration water treatment system enters dry spell, and this system is 1.5m at wet-dry ratio (water distribution phase/fall dry spell) for 1:3, hydraulic load
3/ m
2Move under the condition of d, time dry spell that falls is 5.5 hours-6.5 hours;
3, sewage (finish the dry spell that promptly falls) after described ecological-artificial percolation filtration water treatment system is handled can directly discharge;
4, wait to finish dry spell after, open sewage pump once more and carry out water distribution, so circulation.
Below the present invention made further specify.
Core of the present invention is to optimize the application of improved ecological-artificial percolation filtration water treatment system (Eco-CRI), and effluent stream by synergies such as physical adsorption filtration, microbiological deterioration and chemical precipitations, realizes the purpose of sewage disposal after this system.Not only solve the easy blocking problem of single artificial rapid diafiltration technology filtrate in operational process, and solved problems such as earthworm and ecological diafiltration technical stability is poor, nitrogen phosphorus poor removal effect.
Compare with traditional domestic sewage treatment process, the present invention has following advantage:
(1) technology is simple, need not add pharmaceutical chemicals, does not have complicated mechanical equipment, and construction period is short, is easy to construction, and capital cost is low;
(2) system management is simple and convenient, and sewage only needs once to promote, and relies on flow by gravity and then qualified discharge subsequently, and sludge discharge is few;
(3) treatment effect is good, system stability, safety, reliable.
Specific embodiments
The ecological-artificial percolation filtration water treatment system of a kind of dispersion type domestic wastewater of the present invention is formed by following four layers from top to bottom:
The first layer: organic filler layer, thickness are 40cm; This layer is mixed by the natural sand of the haydite of peat soil, particle diameter 2mm-3mm, particle diameter 1.5mm-2.0mm and forms, and the volume ratio of peat soil, haydite, natural sand is that 6:1:3 (is the peat soil volume: the haydite volume: natural sand volume=6:1:3; By 1600/m
2Article-1700 ,/m
2Quantity in this organic filler layer, throw in earthworm, and be the spacing plantation hydrobiont reed of 500cm with a spacing at this layer;
The second layer: capillary water barrier layer, thickness are 020cm; This layer is that the rubble of 5mm-30mm is formed by particle diameter;
The 3rd layer: zone of saturation infiltration layer, thickness are 060cm; Natural sand and the particle diameter that by particle diameter is 0.5mm-1.5mm is that the vermiculite of 2mm-4mm mixes and forms, and the volume ratio of natural sand and vermiculite is that 7:3 is the natural sand volume: the vermiculite volume=7:3).
The 4th layer: supporting layer, thickness are 30cm; By particle diameter is that 5mm-40mm rubble is formed.
Two of technical scheme of the present invention is that the ecological-artificial percolation filtration water treatment process of described dispersion type domestic wastewater is carried out as follows:
1, sanitary sewage enters equalizing tank, stabilizing water quality behind thickness grid interception macrobead suspended substance; Wherein, the coarse rack gap can be 50mm; The fine fack gap can be 20mm;
2, open sewage pump, the sewage in the extraction equalizing tank is to described ecological-artificial percolation filtration water treatment system water distribution, and the water distribution time is 2 hours, discharge 9.5m
3/ h-10.5m
3/ h; Described water distribution finishes, and closes sewage pump; Ecological-artificial percolation filtration water treatment system enters dry spell, and this system is 1.5m at wet-dry ratio (water distribution phase/fall dry spell) for 1:3, hydraulic load
3/ m
2Move under the condition of d, time dry spell that falls is 6 hours;
3, sewage (finish the dry spell that promptly falls) after described ecological-artificial percolation filtration water treatment system is handled can directly discharge.
A. handle sweet wine pool, Hunan Province motorway charge station sanitary sewage by above-mentioned ecological-artificial percolation filtration water treatment system and operation method.
Chemical oxygen demand (COD) in the water inlet (COD) 126～218mgL
-1, suspended substance (SS) 123～186mgL
-1, ammonia nitrogen 19.89～32.69mgL
-1, total phosphorus (TP) 2.75～4.53mgL
-1Operation back result is: water outlet COD is 8～46mgL
-1, SS is stabilized in 7～28mgL
-1, ammonia nitrogen is stabilized in 0.45～1.95mgL
-1, TP is dense to be 0.08～0.4mgL
-1, COD, SS, ammonia nitrogen and TP clearance reach 85.6 ± 5.7%, 87.5 ± 4.8%, 93.2 ± 3.2%, 94.7 ± 4.9% respectively.
B. handle sweet wine pool, Hunan Province motorway service area sanitary sewage by above-mentioned ecological-artificial percolation filtration water treatment system and operation method.
Water inlet COD is 150 ~ 226mgL
-1, SS is 157～218mgL
-1, ammonia nitrogen 22.26～37.68mgL
-1, TP is 3.71 ~ 8.16mgL
-1
Operation back result is: water outlet COD is 16 ~ 52mgL
-1, SS is stabilized in 9～26mgL
-1, ammonia nitrogen is stabilized in 0.52～1.64mgL
-1, TP is 0.11 ~ 0.47mgL
-1, COD, SS, ammonia nitrogen and TP clearance reach 84.8 ± 6.8%, 89.2 ± 5.5% respectively, and 92.9 ± 5.8%, 95.1 ± 5.3%.
Claims (2)
1, a kind of ecological-artificial percolation filtration water treatment system of dispersion type domestic wastewater is characterized in that, it is formed by following four layers from top to bottom:
The first layer: organic filler layer, thickness are 38cm-42cm; This layer is made up of the haydite of peat soil, particle diameter 2mm-3mm, the natural sand mixing of particle diameter 1.5mm-2.0mm, and the volume ratio of peat soil, haydite, natural sand is 5.8-6.2:1:2.8-3.2, i.e. the peat soil volume: the haydite volume: natural sand volume=5.8-6.2:1:2.8-3.2; Press 1500-1800 bar/m
2Quantity in this organic filler layer, throw in earthworm, and be the spacing plantation hydrobiont reed of 500cm with a spacing at this layer;
The second layer: capillary water barrier layer, thickness are 18cm-22cm; This layer is that the rubble of 5mm-30mm is formed by particle diameter;
The 3rd layer: zone of saturation infiltration layer, thickness are 58cm-62cm; Natural sand and the particle diameter that by particle diameter is 0.5mm-1.5mm is that the vermiculite of 2mm-4mm mixes and forms, and the volume ratio of natural sand and vermiculite is 7:2.8-3.2, i.e. natural sand volume: vermiculite volume=7:2.8-3.2;
The 4th layer: supporting layer, thickness are 28cm-32cm; By particle diameter is that the rubble of 5mm-40mm is formed.
2, a kind of ecological-artificial percolation filtration water treatment process of dispersion type domestic wastewater is characterized in that, this method is carried out as follows:
(1) sanitary sewage enters equalizing tank, stabilizing water quality behind thickness grid interception macrobead suspended substance;
(2) open sewage pump, the sewage in the extraction equalizing tank is to the described ecological-artificial percolation filtration water treatment system water distribution of claim 1, and the water distribution time is 110 minutes-130 minutes, discharge 9.5m
3/ h-10.5m
3/ h; Described water distribution finishes, and closes sewage pump; Ecological-artificial percolation filtration water treatment system enters dry spell, and this system is that 1:3, hydraulic load are 1.5m at wet-dry ratio
3/ m
2Move under the condition of d, time dry spell that falls is 6 hours-6.5 hours;
(3) sewage is after described ecological-artificial percolation filtration water treatment system is handled, and finish the dry spell that promptly falls, and just can directly discharge;
(4) wait to finish dry spell after, open sewage pump once more and carry out water distribution, so circulation.
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| CN2009100429590A CN101508507B (en) | 2009-03-25 | 2009-03-25 | Ecological-artificial percolation filtration water treatment system and method for dispersion type domestic wastewater |
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| CN2009100429590A CN101508507B (en) | 2009-03-25 | 2009-03-25 | Ecological-artificial percolation filtration water treatment system and method for dispersion type domestic wastewater |
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| CN101508507A true CN101508507A (en) | 2009-08-19 |
| CN101508507B CN101508507B (en) | 2010-10-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973639A (en) * | 2010-11-12 | 2011-02-16 | 东南大学 | Method for improving microbial activity of artificial wetland |
| CN102219335A (en) * | 2011-03-17 | 2011-10-19 | 上海昌保环境科技有限公司 | Earthworm soil diafiltration for ecologically processing domestic sewage with earthworm soil diafiltration |
| CN103466887A (en) * | 2013-09-13 | 2013-12-25 | 同济大学 | Activated sludge-constructed infiltration treatment system and method of dispersion type domestic sewage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056258A (en) * | 1991-04-20 | 1991-11-20 | 北京农业大学 | Municipal sewage artificial soil rapid filtration treatment technology and filtrate---artificial soil |
| CN1285515C (en) * | 2004-09-17 | 2006-11-22 | 钟佐燊 | Artificial rapid diafiltration sewage treating system |
| CN101172697A (en) * | 2007-11-05 | 2008-05-07 | 中国农业大学 | Artificial soil rapid filtration system for strengthening remove of nitrogen in sewage |
-
2009
- 2009-03-25 CN CN2009100429590A patent/CN101508507B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973639A (en) * | 2010-11-12 | 2011-02-16 | 东南大学 | Method for improving microbial activity of artificial wetland |
| CN102219335A (en) * | 2011-03-17 | 2011-10-19 | 上海昌保环境科技有限公司 | Earthworm soil diafiltration for ecologically processing domestic sewage with earthworm soil diafiltration |
| CN102219335B (en) * | 2011-03-17 | 2013-05-22 | 上海昌保环境科技有限公司 | Device for domestic sewage processing with earthworm soil diafiltration |
| CN103466887A (en) * | 2013-09-13 | 2013-12-25 | 同济大学 | Activated sludge-constructed infiltration treatment system and method of dispersion type domestic sewage |
| CN103466887B (en) * | 2013-09-13 | 2015-04-29 | 同济大学 | Activated sludge-constructed infiltration treatment system and method of dispersion type domestic sewage |
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| CN101508507B (en) | 2010-10-06 |
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Inventor after: Zhang Ziyun Inventor before: Zhang Ziyun Inventor before: Wang Dongbo Inventor before: Wang Yijun Inventor before: Yu Guiqiang Inventor before: Yang Bo |
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Effective date of registration: 20151125 Address after: 410000, 1552, building 109, pixel building, Lu Gu Gu Lu, hi tech Development Zone, Hunan, Changsha Patentee after: HUNAN ZIHONG ECOLOGICAL ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 410007 room 3003, provincial water resources department, 370 North Shaoshan Road, Changsha, Hunan Patentee before: Hunan Lvyuan Environmental Protection Engineering Co., Ltd. |
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Address after: 410100, Changsha, Changsha economic and Technological Development Zone, 1 screw Road 104, Depp five and 5 enterprises Park, room No. 2, Hunan Patentee after: Hunan Zi ecological Polytron Technologies Inc Address before: 410000, 1552, building 109, pixel building, Lu Gu Gu Lu, hi tech Development Zone, Hunan, Changsha Patentee before: HUNAN ZIHONG ECOLOGICAL ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
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