CN1587107A - Horizontal undercurrent artificial wet land sewage treating process of variable grain size combined filler - Google Patents
Horizontal undercurrent artificial wet land sewage treating process of variable grain size combined filler Download PDFInfo
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- CN1587107A CN1587107A CNA2004100662338A CN200410066233A CN1587107A CN 1587107 A CN1587107 A CN 1587107A CN A2004100662338 A CNA2004100662338 A CN A2004100662338A CN 200410066233 A CN200410066233 A CN 200410066233A CN 1587107 A CN1587107 A CN 1587107A
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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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Abstract
The present invention belongs to the field of new environment protection technology, and is especially sewage treating technology with artificial wet land with variable grain size combined filler and horizontal undercurrent. The technological process may be used in treating city sewage tail water after the one stage or two stage treatment or restoring polluted water to result in outflow water reaching the grade-IV surface water standard. Sewage to be treated is introduced into the artificial wet land, and purified via the mutual action of matrix, aquatic plant and microbes in the wet land and one series of physical, chemical and biological route, and the outflow water is drained naturally or reused. The treating system may be combined with green land construction.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of change mechanical fraction level of filler drowned flow artificial wet land sewage treatment process.
Background technology
It is the subsequent treatment process of target that domestic and international wet land treating system is mainly used in the reusing sewage, and its effluent quality is good, can reach the quality of reused water requirement substantially.A lot of wet land systems have been built in Phoenix, Arizona State as the U.S., and are respond well to ammonia nitrogen and organic matter removal; China builds up first artificial marsh sewage treatment system-white clay worker's wetland demonstration project of cheating July nineteen ninety in Shenzhen, it is better that The actual running results shows that artificial wet land system is removed the effect of organism and suspended solids.Changping County, Beijing treatment scale is 500m
3The artificial reed wetland treatment system of the surface current of/d is stable, and capacity of resisting impact load is stronger, and investment and working cost only are 1/2～1/5 of conventional second-stage treatment.The demonstration project of surface current artificial wetland and subsurface constructed wetland combination has been built up at Dagang Oilfield in Tianjin, is used to handle sanitary sewage.But the filler of these wetlands adopts natural soil substantially, and the ubiquity floor space is big, treatment effect is stable inadequately and the problem of winter operation deleterious.It is stable inadequately that the present artificial wet land system that generally uses is subjected to various factors to influence treatment effect, the data of being reported often diversity ratio are bigger, are mainly concerned with factors such as moving season, temperature, processing bed structure, filler composition, floristics, method for managing system.
Summary of the invention
The objective of the invention is to propose a kind of change mechanical fraction level of filler drowned flow artificial wet land sewage treatment process that construction investment is economized, management is simple, operation and maintenance cost is low, treatment effect is stable in conjunction with natural, ecological.
A kind of change mechanical fraction level of filler drowned flow artificial wet land sewage treatment process that the present invention proposes, concrete steps are as follows: will be through one, water in the municipal effluent of second-stage treatment or the contaminated physical environment water body, enter by becoming the artificial swamp of mechanical fraction material by the water distribution system horizontal drowned flow into bed of packings, planting on the artificial swamp is implanted with aquatic or terrestrial plant, sewage stopped 3--30 days at artificial swamp, utilize filler in the wetland, interaction between aquatic or terrestrial plant and the microorganism, by filtering, absorption, coprecipitated, ion-exchange, process such as plant absorbing and microbiological degradation, to chemical oxygen demand (COD) in the sewage, nutritive elements such as nitrogen phosphorus, metal ion is (as Al, Fe, Ba, Cd, Co, B, Cu, Mn, Pb, V, Zn etc.), heavy metal ion particularly, and various poisonous biodegradable organic compoundses are (as agricultural chemicals, Dioxins etc.) and biotoxin (as the algae toxin etc.) removal of degrading, water outlet discharging natural water or reuse.
Among the present invention, become the mechanical fraction filler and can adopt any two or two or more combination in zeolite, gravel, granite, shale, Wingdale, the blast furnace slag etc.Utilize the removal effect of each component, select combination of different materials, can bring into play their comprehensive action, to remove pollution substance more widely to specific pollutants; Utilize their absorption under the varying environment condition and the characteristics of parsing simultaneously, the treatment effect of balanced Various Seasonal.For example zeolite has good adsorptive power to the ammonia nitrogen in the water, and shale, Wingdale, granite etc. have good adsorption precipitation effect because calcium ions and magnesium ions content is higher to phosphorus in the water, and blast furnace slag can have good regulating power to the sewage that contains certain acidity.
Among the present invention, the particle diameter that becomes the mechanical fraction filler adopts 5mm-80mm.Become the particle diameter filler and changed the single shortcoming of wet land filler particle diameter in the past, select the filler of different particle diameters, can increase media area, increase the bond area of microorganism, be beneficial to plant root system development, reduce the head loss of wetland, be convenient to by root system of plant and filler space oxygenation.
Among the present invention, aquatic or terrestrial plant can be adopted the one or more combination in calamus, cattail, reed, iris, Caulis Miscanthis floriduli, wild rice stem, Fischer grass, willow and the shrub species etc.Waterplant except can directly absorbing the removal all contaminations, also has following effect: 1. provide energy derive by photosynthesis for cleaning action in wetland; 2. the root system that plant is huge can strengthen and keep the waterpower transmission of medium, for various microorganisms provide various living environment, and many kinds of pollution substances of the bacterial flora degradable in root district; 3. plant energy delivering oxygen helps the aerobic respiration of microorganism to the root district; 4. can be used as the indicator of the suffered pollution level of medium; 5. the moisture in the energy fixing soil is drawn a circle to approve the zone of pollution, prevents the further diffusion of source of pollution; 6. but have appreciating attractive in appearance, can improve the landscape ecological environment; 7. can gather in the recovery resource.For example, the test of handling low-concentration heavy metal sewage show cyperus alternifolius can the absorbing enriched water body in 30% copper and manganese, to zinc, cadmium, plumbous enrichment also at 5%-15%.
Among the present invention, in the artificial swamp processing unit,, be followed successively by impervious barrier 1, sand bedding course 2 (thickness is 30-60mm) from bottom to top, become mechanical fraction packing layer 3 (thickness is 700-1800mm), top is earthing 4, processing unit both sides landfill is in rubble or gravel.Impervious barrier can adopt impervious materials, if wetland scope bottom is the very low clay seam of permeability rate, can be used as impervious barrier.
Among the present invention, the artificial swamp long-width ratio is 5: 1 to 15: 1, and 0.1 meter to 0.3 meter of top layer earthing, the head absolute altitude of horizontal drowned flow are positioned at following 0.1 meter to 0.3 meter of wetland surface.
Characteristics of the present invention are as follows:
(1) construction cost of the present invention is low, can reduce investment outlay significantly, and operational management is convenient, and processing cost is low;
(2) the present invention can build simultaneously with the greenery patches, coordinates mutually with improvement of the ecological environment;
(3) the present invention can reach more than 90% water inlet organic pollutant, ammonia nitrogen, total tp removal rate by the absorption and the action of microorganisms of filler, and water outlet reaches municipal quality of reused water standard;
Operating performance of the present invention is stable, and degree affected by environment is little.
Description of drawings
Fig. 1 is for becoming mechanical fraction level of filler drowned flow artificial wet land sewage treatment process synoptic diagram.
Number in the figure: 1 is impervious barrier, and 2 is sand bedding course, and 3 for becoming the mechanical fraction filler, and 4 is earthing, and 5 is water distributing pipe, and 6 is the rubble water distributing area, and 7 is the rubble exhalant region, and 8 are the water outlet tracery wall, and 9 for going out water channel.
Embodiment
The invention is further illustrated by the following examples.
Embodiment 1: the municipal effluent tail water with second-stage treatment is treated to example.Technical process is pressed shown in the accompanying drawing 1.This moment, the water quality characteristic of secondary treatment yielding water showed as COD＜60mg/L, was the nitrate nitrogen form more than 90% in total nitrogen＜15mg/L and its component, and 99% is bioactive P in total phosphorus＜1mg/L and its component.Operation becomes mechanical fraction level of filler drowned flow artificial wet land sewage treatment process, hydraulic load 30cm/d, sewage stopped in wetland 7 days, by the size grading of filler, the filler combination of various trait and the acting in conjunction of wetland landscape plant, realize biological denitrificaion (mainly showing as the denitrification of microorganism) and dephosphorization (mainly showing as the physisorption and the plant absorbing of different fillers).Operation result is, COD＜10mg/L, SS＜10mg/L, nitrogen removal rate＞80%, total tp removal rate＞85%, and effluent quality meets national surface water IV class water quality standard.
Municipal wastewater treatment plant secondary treatment yielding water, Pollutant levels are not high, select for use low-cost protruded packing such as haydite, gravel as main biological growth medium, keep bigger specific surface area, for microorganism provides bigger living space, thereby improve denitrification efficient; And be equipped with the good filler-reinforced phosphor-removing effects of phosphor-removing effect such as Wingdale, grouan, shale.Select for use local dominant plants such as reed, cattail as wetland plant.
Embodiment 2: the municipal effluent tail water of handling with one-level is treated to example.Technical process is pressed shown in the accompanying drawing 1.This moment, the water quality characteristic of one-level treat effluent showed as COD at 60mg/L～150mg/L, and total nitrogen is the ammonia nitrogen form more than 99% in 20mg/L～35mg/L and its component, and total phosphorus 80% is a bioactive P in 2～3mg/L and its component.Operation becomes mechanical fraction level of filler drowned flow artificial wet land sewage treatment process, hydraulic load 10cm/d, sewage stopped in wetland 20 days, utilize the interaction between wetland mesostroma, waterplant and the microorganism, purify waste water by series of physical, chemistry and biological approach, can realize that the biochemistry of the conversion of nitrogen and removal, realization phosphorus element and materialization remove.Operation result is, COD＜15mg/L, SS＜10mg/L, nitrogen removal rate＞90%, total tp removal rate＞95%, and effluent quality meets national surface water IV class water quality standard.
The water inlet Pollutant levels are higher, water quality is relatively poor, blocked for preventing filler, on particle diameter, select for use the large particle size filler of 30mm to 50mm to account for 70%, select for use zeolite etc. that ammonia nitrogen is had fine adsorbing protruded packing on the kind, and be equipped with the good filler-reinforced phosphor-removing effects of phosphor-removing effect such as Wingdale, grouan, shale, wetland plant selected local well developed root system, oxygen carrying capacity strong, remove the strong dominant plant population of ammonia nitrogen ability, as: Fischer grass, reed etc., comprehensive action shows that effluent quality is good, has reached national surface water IV class water quality standard.
Claims (6)
1, a kind of change mechanical fraction level of filler drowned flow artificial wet land sewage treatment process, it is characterized in that concrete steps are as follows: will be through one, water in the municipal effluent of second-stage treatment or the contaminated physical environment water body, enter by becoming the artificial swamp of mechanical fraction material by the water distribution system horizontal drowned flow into bed of packings, planting on the artificial swamp is implanted with aquatic or terrestrial plant, sewage stopped in artificial swamp 3--30 days, utilize filler in the wetland, interaction between waterplant and the microorganism, effectively chemical oxygen demand (COD) in the sewage is removed in degraded, nitrogen, phosphorus, metal ion and various poisonous biodegradable organic compounds and biotoxin, water outlet discharging natural water or reuse.
2, sewage treatment process according to claim 1 is characterized in that described change mechanical fraction filler is any two or two or more combination in zeolite, gravel, Hua Gangshi, shale, Wingdale, the blast furnace slag.
3, sewage treatment process according to claim 2, the particle diameter that it is characterized in that described filler is 5mm-80mm.
4, sewage treatment process according to claim 1 is characterized in that described aquatic or terrestrial plant is the one or more combination of calamus, cattail, reed, iris, Caulis Miscanthis floriduli, wild rice stem, Fischer grass, willow and shrub species.
5, sewage treatment process according to claim 1 is characterized in that described artificial swamp, is followed successively by impervious barrier (1), sand bedding course (2) from bottom to top, becomes mechanical fraction packing layer (3), there are rubble or gravel in top into earthing (4), wetland both sides landfill.
6, sewage treatment process according to claim 1 is characterized in that the artificial swamp long-width ratio is 5: 1 to 15: 1, and 0.1 meter to 0.3 meter of top layer earthing, the head absolute altitude of horizontal drowned flow are positioned at following 0.1 meter to 0.3 meter of wetland surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100662338A CN1587107A (en) | 2004-09-09 | 2004-09-09 | Horizontal undercurrent artificial wet land sewage treating process of variable grain size combined filler |
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| CNA2004100662338A CN1587107A (en) | 2004-09-09 | 2004-09-09 | Horizontal undercurrent artificial wet land sewage treating process of variable grain size combined filler |
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| CN1587107A true CN1587107A (en) | 2005-03-02 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366550C (en) * | 2005-11-01 | 2008-02-06 | 南京大学 | Automatic aeration system for underflow type artificial wet land |
| CN100391869C (en) * | 2006-10-13 | 2008-06-04 | 东南大学 | Filler-changeable artificial wet land reinforced phosphor-removing denitrifying method and reinforced phosphor-removing denitrifying tank |
| CN100400438C (en) * | 2005-09-21 | 2008-07-09 | 中国环境科学研究院 | Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system |
| CN100415662C (en) * | 2005-04-28 | 2008-09-03 | 重庆大学 | System and process for sawage treating with baffling wet land filtering tank and rateral underflow wet land bed |
| CN101880089A (en) * | 2010-07-16 | 2010-11-10 | 华南理工大学 | Baffling type constructed wetland device for treatment of low-concentration area source pollution |
| CN101531444B (en) * | 2009-04-10 | 2011-07-20 | 北京工业大学 | Sewage recycling process for combination of biological rapid filtration and slow filtration |
| CN102276110A (en) * | 2011-06-08 | 2011-12-14 | 重庆大学 | Method for remedying micro-polluted water body and subsurface flow artificial wetland system |
| CN102515360A (en) * | 2011-12-31 | 2012-06-27 | 中国建筑股份有限公司 | Artificial wetland for treating lime-rich alkali waste water and treatment method thereof |
| CN102531179A (en) * | 2011-11-18 | 2012-07-04 | 北京东溪柳环保工程有限公司 | System and method for stably and efficiently treating sewage of artificial wetland |
| CN102557348A (en) * | 2012-01-09 | 2012-07-11 | 中国环境科学研究院 | Soil remediation and sewage purification integrated ecological treatment device |
| CN102616935A (en) * | 2012-01-18 | 2012-08-01 | 重庆文理学院 | Application of berberis julianae schneid in purification of livestock and poultry breeding biogas slurry |
| CN103408197A (en) * | 2013-08-22 | 2013-11-27 | 深圳市环境科学研究院 | Reinforced denitrification dephosphorization pretreatment method and device for micropolluted water treatment artificial wetland |
| CN104628137A (en) * | 2014-12-29 | 2015-05-20 | 南京大学 | Method for treating phosphatic sewage by coupling modified biomass charcoal and artificial wetland |
| CN112028255A (en) * | 2020-07-23 | 2020-12-04 | 北京建工资源循环利用投资有限公司 | Wetland filler and constructed wetland |
-
2004
- 2004-09-09 CN CNA2004100662338A patent/CN1587107A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415662C (en) * | 2005-04-28 | 2008-09-03 | 重庆大学 | System and process for sawage treating with baffling wet land filtering tank and rateral underflow wet land bed |
| CN100400438C (en) * | 2005-09-21 | 2008-07-09 | 中国环境科学研究院 | Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system |
| CN100366550C (en) * | 2005-11-01 | 2008-02-06 | 南京大学 | Automatic aeration system for underflow type artificial wet land |
| CN100391869C (en) * | 2006-10-13 | 2008-06-04 | 东南大学 | Filler-changeable artificial wet land reinforced phosphor-removing denitrifying method and reinforced phosphor-removing denitrifying tank |
| CN101531444B (en) * | 2009-04-10 | 2011-07-20 | 北京工业大学 | Sewage recycling process for combination of biological rapid filtration and slow filtration |
| CN101880089A (en) * | 2010-07-16 | 2010-11-10 | 华南理工大学 | Baffling type constructed wetland device for treatment of low-concentration area source pollution |
| CN102276110A (en) * | 2011-06-08 | 2011-12-14 | 重庆大学 | Method for remedying micro-polluted water body and subsurface flow artificial wetland system |
| CN102276110B (en) * | 2011-06-08 | 2012-10-17 | 重庆大学 | Method for remedying micro-polluted water body and subsurface flow artificial wetland system |
| CN102531179A (en) * | 2011-11-18 | 2012-07-04 | 北京东溪柳环保工程有限公司 | System and method for stably and efficiently treating sewage of artificial wetland |
| CN102531179B (en) * | 2011-11-18 | 2014-02-26 | 北京东溪柳环保工程有限公司 | System and method for stably and efficiently treating sewage of artificial wetland |
| CN102515360A (en) * | 2011-12-31 | 2012-06-27 | 中国建筑股份有限公司 | Artificial wetland for treating lime-rich alkali waste water and treatment method thereof |
| CN102557348A (en) * | 2012-01-09 | 2012-07-11 | 中国环境科学研究院 | Soil remediation and sewage purification integrated ecological treatment device |
| CN102557348B (en) * | 2012-01-09 | 2013-05-22 | 中国环境科学研究院 | Soil remediation and sewage purification integrated ecological treatment device |
| CN102616935A (en) * | 2012-01-18 | 2012-08-01 | 重庆文理学院 | Application of berberis julianae schneid in purification of livestock and poultry breeding biogas slurry |
| CN102616935B (en) * | 2012-01-18 | 2014-04-16 | 重庆文理学院 | Application of berberis julianae schneid in purification of livestock and poultry breeding biogas slurry |
| CN103408197A (en) * | 2013-08-22 | 2013-11-27 | 深圳市环境科学研究院 | Reinforced denitrification dephosphorization pretreatment method and device for micropolluted water treatment artificial wetland |
| CN103408197B (en) * | 2013-08-22 | 2015-01-21 | 深圳市环境科学研究院 | Reinforced denitrification dephosphorization pretreatment method and device for micropolluted water treatment artificial wetland |
| CN104628137A (en) * | 2014-12-29 | 2015-05-20 | 南京大学 | Method for treating phosphatic sewage by coupling modified biomass charcoal and artificial wetland |
| CN112028255A (en) * | 2020-07-23 | 2020-12-04 | 北京建工资源循环利用投资有限公司 | Wetland filler and constructed wetland |
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