CN101723520B - Method for cutting low-pollution water load of venous riverway - Google Patents
Method for cutting low-pollution water load of venous riverway Download PDFInfo
- Publication number
- CN101723520B CN101723520B CN2009102633756A CN200910263375A CN101723520B CN 101723520 B CN101723520 B CN 101723520B CN 2009102633756 A CN2009102633756 A CN 2009102633756A CN 200910263375 A CN200910263375 A CN 200910263375A CN 101723520 B CN101723520 B CN 101723520B
- Authority
- CN
- China
- Prior art keywords
- ecological
- water
- riverway
- bed
- venous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005520 cutting process Methods 0.000 title claims abstract description 13
- 238000007667 floating Methods 0.000 claims abstract description 42
- 230000003647 oxidation Effects 0.000 claims abstract description 30
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 30
- 238000005516 engineering process Methods 0.000 claims description 48
- 210000003462 vein Anatomy 0.000 claims description 28
- 241000894006 Bacteria Species 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000004172 nitrogen cycle Methods 0.000 claims description 8
- 230000008439 repair process Effects 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 6
- 230000012010 growth Effects 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 4
- 230000013370 mutualism Effects 0.000 claims description 4
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 2
- 241000108664 Nitrobacteria Species 0.000 claims description 2
- 230000009189 diving Effects 0.000 claims description 2
- 238000012851 eutrophication Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 30
- 239000010865 sewage Substances 0.000 description 23
- 239000000126 substance Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 241000684239 Canna x generalis Species 0.000 description 8
- 238000013461 design Methods 0.000 description 8
- 244000025254 Cannabis sativa Species 0.000 description 7
- 238000005202 decontamination Methods 0.000 description 7
- 230000003588 decontaminative effect Effects 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 6
- 240000000260 Typha latifolia Species 0.000 description 5
- 241000195967 Anthoceros Species 0.000 description 4
- 244000207740 Lemna minor Species 0.000 description 4
- 235000006439 Lemna minor Nutrition 0.000 description 4
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 4
- 244000207867 Pistia stratiotes Species 0.000 description 4
- 235000006440 Pistia stratiotes Nutrition 0.000 description 4
- 235000001855 Portulaca oleracea Nutrition 0.000 description 4
- 241001083492 Trapa Species 0.000 description 4
- 235000014364 Trapa natans Nutrition 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000050 nutritive effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 235000009165 saligot Nutrition 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 3
- 241001113556 Elodea Species 0.000 description 3
- 240000008436 Ipomoea aquatica Species 0.000 description 3
- 241001633663 Iris pseudacorus Species 0.000 description 3
- 235000001601 Sabal palmetto Nutrition 0.000 description 3
- 241000746966 Zizania Species 0.000 description 3
- 235000002636 Zizania aquatica Nutrition 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 210000000476 body water Anatomy 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002352 surface water Substances 0.000 description 3
- 230000005068 transpiration Effects 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- 244000205574 Acorus calamus Species 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 2
- 235000011996 Calamus deerratus Nutrition 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010027439 Metal poisoning Diseases 0.000 description 2
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 2
- 241001123263 Zostera Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004176 ammonification Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000589151 Azotobacter Species 0.000 description 1
- 241000196240 Characeae Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 244000205754 Colocasia esculenta Species 0.000 description 1
- 235000006481 Colocasia esculenta Nutrition 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 208000008763 Mercury poisoning Diseases 0.000 description 1
- 241000169076 Monochoria korsakowii Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 241000209490 Nymphaea Species 0.000 description 1
- 235000016791 Nymphaea odorata subsp odorata Nutrition 0.000 description 1
- 244000143231 Scirpus validus Species 0.000 description 1
- 235000008573 Scirpus validus Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 208000005882 cadmium poisoning Diseases 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 208000008127 lead poisoning Diseases 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a method for cutting low-pollution water load of a venous riverway and belongs to the field of water treatment. The method comprises the following steps: (1) constructing the venous riverway by utilizing a waste riverway or a bottomland near-natural type riverway, (2) arranging an ecological floating island and a shoreside restoration belt in the upper stream of the venous riverway according to the direction of current, (3) arranging an ecological water permeable dike between the upper stream and the midstream of the venous riverway, (4) arranging a submerged type ecological bed and a biological contact oxidation bed in the midstream of the venous riverway, (5) arranging an ecological water permeable dike between the midstream and the lower stream of the venous riverway, and (6) arranging an ecological floating island and a shoreside restoration belt in the lower stream of the venous riverway. Through the application of the method, the removing rates of COD, ammonia nitrogen, total nitrogen and SS can reach over 60 percent respectively so as to make the venous riverway achieve good ecological effect and landscape effect finally. The method realizes the integration of functionality, ecology and landscape of the riverway, achieves the treating effect of clean water, green bank and beautiful scene, and provides guarantee for water quality of a river network area.
Description
Technical field
The present invention relates to the groundwater pollution control of water body, the method for the cutting low-pollution water load of venous riverway of saying so more specifically.
Background technology
WWT is adopted the whole bag of tricks that the separated from contaminants that is contained in the sewage is come out exactly, or is translated into harmless and stable material, thereby sewage is purified.Modern sewage disposal technology by its action principle, can be divided into physics method, chemical method and biological process.(1) physical treatment method mainly is to utilize methods such as filtration, deposition, flotation to remove suspended substance.(2) chemical treatment method comprises methods such as neutralization, oxidation, chemical coagulation, electrolysis-coagulation, IX.Neutralization makes the waste liquor PH value near neutral.Oxidation style is to utilize air or oxygenant that the organic substance in the waste water is oxidized to innoxious substance.Chemical coagulation is to utilize materials such as Tai-Ace S 150, iron(ic)chloride to make the colloid in the waste water become flocks.Ion exchange method is to utilize ion exchange resin from waste water, to separate heavy metal ion.Use acid solution drip washing resin then, heavy metal is washed out, make resin regeneration.(3) bioremediation is utilized the biochemical action in the microbial life moving process, is harmless simple material with the harmful organic substance decomposition and inversion, reaches the purpose of purification of waste water.Pollutent in sewage and the industrial sewage is diversified; Expectability does not only use a kind of method just can be all pollutant removals totally; A kind of sewage often need be handled through the treatment system of being made up of several method, just can reach the degree that requirement is handled." press the degree of treatment division, WWT can be divided into one-level processing, second-stage treatment, tertiary treatment.One-level is handled and to be cried pre-treatment, its content again is the pollution substance of removing drift and part suspended state in the sewage, and adjusting pH value alleviates the corruption degree of sewage and the load of subsequent treatment process.Major part in the physics method can only be accomplished the one-level treatment requirement.Second-stage treatment is also claimed biochemical treatment, and main task is to remove the organic pollutants that is colloidal state and dissolved state in the sewage significantly.Tertiary treatment is an advanced treatment, and Applied Physics chemistry and chemical process make water quality reach the water requirement.
From the nineties in 20th century, country attaches most importance to basins such as the Huai, Hai and Liao rivers and Tai, Chao and Dianchi lakes (Huaihe River, the Liaohe River, Haihe River, Taihu Lake, Chaohu, Dian Chi), reservoir area of Three Gorges, the south water to north are along the line, adopts a series of measures, and carries out basin water prevention and cure of pollution work.Through making great efforts for many years, the trend of China's basin water pollution deterioration is curbed basically at present, and quality of water environment makes moderate progress, but the water surrounding situation that faces still allows of no optimist.
At first, water quality condition does not fundamentally improve, and the water pollution situation is still quite serious.2006, national surface water overall water quality belonged to intermediate pollution.In 745 surface water monitoring sections of state environmental net (being called for short state's control net) actual monitoring, I～III class (excellent, good), IV, V class (slight and intermediate pollution), the section ratio of bad V class (serious pollution) water quality is respectively 40%, 32% and 28%.The flow through section in city 90% receives in various degree and polluting, and wherein, Song Hua River, the Yellow River, Huaihe River are intermediate pollution, and the Liaohe River, Haihe River are serious pollution; Eutrophication appears in 75% lake, and wherein, Chaohu water quality is the V class, and Taihu Lake and Dian Chi are bad V class; In addition, key cities' tap water seedbed water quality of 30% does not reach the III class standard.
Secondly, gross contamination emission is big, the environmental capacity that can bear considerably beyond the basin.Tenth Five-Year Plan Period, China's wastewater discharge increases by 8.7% from 524.5 hundred million tons of being increased to 2005 of 415.2 hundred million tons in 2000; COD 2005 was 1414.2 ten thousand tons, reduced 5.6% than 2000, did not accomplish the Tenth Five-Year Plan (2001-2005) and reduced discharging 10% target.Country's Eleventh Five-Year Plan outline proposes, and the Eleventh Five-Year Plan period COD will reduce discharging 10%, and as restrictive target.But national COD quantity discharged increased by 1.0%, not anti-reflection liter than 2005 in 2006.Through painstaking efforts, the first three quarters whole nation COD quantity discharged fell 0.28% on a year-on-year basis in 2007, transferred decline to by rising first, the Eleventh Five-Year Plan period reduced discharging 10% target but will accomplish, and task is still very arduous.
The 3rd, serious water pollutes the shortage of not only having aggravated water resources, has destroyed aquatic ecosystem, and has influenced normal production of people and life, and the Sustainable development with society constitutes a threat to China's economy.The one, in the shortage that has day by day seriously aggravated water resources of water pollution.Because water pollutes abundant originally rivers water resources not only can not be utilized; But also need great amount of manpower and material resources to renovate; This makes northern area and the city lack of water more of original lack of water; And make abundant southern area of water resources and city keep the lake, river but can not to obtain cleaning water up to standard, form so-called water quality type lack of water, become the bottleneck that restricts the good and fast development of economic society.The 2nd, water resources is excessively developed, and aquatic ecosystem is destroyed.Internationally recognized basin water resources utilization ratio barrier line is 30%～40%, and the water utilization rate in the most of river of China has all surpassed this barrier line, is 60% like Huaihe River, the Yellow River 62%, the Liaohe River 65%, and Haihe River surpasses 90%.The excessive development and use of water resources and channelization, the fragmentation of river system cause regulate and store ability, pollutant purification ability, hydrobiological throughput etc. of flood constantly to descend, and make China's aquatic system receive destruction in various degree.The 3rd, water pollutes to people's drinking water safety and health and has caused threat.The drinking water source, cities and towns of China nearly 90% has received the threat of municipal effluent, trade effluent and agricultural drainage.Cause tap water crisis in various degree in many places.As Guizhou, Yunnan etc. tangible nuisance disease has just appearred, like lead poisoning, cadmium poisoning, mercury poisoning etc.; The many regional cancer morbidities of Basin of Huaihe River exceed tens times to hundreds of times than normal area, have had a strong impact on local resident's Health and Living.
Summary of the invention
1. invent the technical problem that will solve
Pollution to existing river water increasingly sharpens and reluctant problem; The invention provides the method for cutting low-pollution water load of venous riverway; Adopt the ecological bed technology of submergence type, bio-contact oxidation technology, ecological floating island is technological and ecological permeable dam; This method can solve the pollution problem in vein river course, river network of watershed area, effectively removes pollution substance such as nitrogen, phosphorus in the sewage.
2. technical scheme
For solving above technical problem, principle of the present invention is:
According to the function of the characteristic in vein river course, each core technology, vein river regulation target and the ecoscape effect that will reach; Technical scheme of the present invention is: take in two sides, the upper reaches, river course the bank repair can be preferably fixedly bank slope, obstruction sewage; The effectively inflow of minimizing face source sewage, sewage; Adopt the ecological floating island technology in the river course; Strengthen the nitrogen phosphorus of removing in the upper river through ecological floating island plant-immobilization nitrogen-cycle bacteria mikrobe mutualism system, simultaneously ecological floating island and bank rehabilitation plant built jointly harmony ecoscape.The ecological permeable dam that is provided with between the upper reaches and the middle reaches, the root system of permeable dike surface plantation plant are mikrobe when the habitat is provided, and also can help lend some impetus to the absorption and the conversion of nutritive substances such as N, P for mikrobe provides oxygen.It is ecological bed at middle reaches submergence type to be set, and utilizes the sorption of plant to remove pollutents such as nitrogen in the sewage, phosphorus, bio-contact oxidation is set then, through biological oxidation, with the plant residue oxygenolysis of organism in the sewage and middle and upper reaches.Plant during submergence type is ecological bed can be decomposed and rotted in water, therefore with bio-contact oxidation be located at submergence type ecological bed after.Before the downstream, river course, establish ecological permeable dam earlier, further effectively remove remaining COD, TN, TP.Downstream, river course water quality has reached the surface water standard basically, and ecological floating island is set has two effects: the one, further purify river water quality, and the 2nd, beautify river course environment, obtain ecological effect and landscape effect preferably.The bank is set repairs and to conserve water and soil, and combine the common ecosystem that constitutes of ecological floating island, reach the effect of " water is clear, bank is green, scape beautiful ".Integrated use through the cutting low-pollution water load of venous riverway gordian technique; Form the cutting low-pollution water load of venous riverway gordian technique system of " river course, two-layer filtration, triple processing; four kinds of core technologies ", realize finally that the vein river course is functional, ecological property and the unification of view property.
Technical scheme of the present invention is:
The method of cutting low-pollution water load of venous riverway the steps include:
(1) utilize the nearly natural type of abandoned channel or bottom land river course to make up the vein river course,
(2) in the vein river course, ecological floating island and bank are set at the upper reaches and repair band by water (flow) direction;
(3) between the upper reaches, vein river course and middle reaches, ecological permeable dam is set;
(4) at the vein middle reaches the ecological bed and bio-contact oxidation bed of submergence type is set;
(5) between vein middle reaches and downstream, ecological permeable dam is set;
(6) ecological floating island and bank are set in downstream, vein river course and repair band.
River sewage is successively through finally reaching the purpose of water correction after the above Ecological Disposal.
(1) ecological floating island
On the collection of diving water body in lake, domestication, screening efficient denitrification bacterium, comprise Ammonifying bacteria, nitrobacteria, nitrite bacteria and denitrifying bacterium; Prepare and be suitable for microorganism growth, have the little environmental fixation support of biocompatibility, environment concordance; The efficient nitrogen-cycle bacteria that adopts new and high technology to filter out is fixed on the biological compatibility carrier, prepares immobilization efficient denitrification bacterium (ammonification, nitrated, nitrosification, denitrifying bacterium); Adopt the ecological floating island technology vein river water body to be purified, set up ecological floating island plant-immobilization nitrogen-cycle bacteria mikrobe mutualism system reinforcement and remove lake, river water nitrogen phosphorus with immobilization nitrogen-cycle bacteria technology is integrated.
Take all factors into consideration aspect composite factor such as nutritive substance monitoring result in decontamination effect improving, the season of growth, survival difficulty or ease, indigenous kind, landscape effect, follow-up management, management of long-term and the water body of waterplant; Selection is to TN, ammonia nitrogen, waterplant that the total phosphorus treatment effect is good; Select emergent, submerged plant, floating plant to combine simultaneously and be configured, build ecological floating island.To the TP removal effect preferably waterplant have: the black algae in the submerged plant, eel grass, the reed in the emergent, cattail, yellow flag, wild rice stem, water chestnut, the water lettuce in the floating plant, duckweed, swamp cabbage.To the ammonia nitrogen removal effect preferably in the plant; Submerged plant has black algae, hornwort, eel grass, stonewort; Emergent has reed, cattail, calamus, Scirpus tabernaemontani, wild rice stem, taro, arrowhead, water chestnut, lotus rhizome; Floating plant has water lettuce, duckweed, swamp cabbage, water chestnut, Monochoria korsakowii, water lily, and terrestrial plant has Canna generalis Bailey, parasol grass, and wherein water lettuce, the best water lettuce of duckweed effect, duckweed effect are best.
Ecological floating island can not only be removed nutritive salt such as nitrogen, phosphorus effectively, and water transparency is increased substantially, and water-quality guideline also is improved simultaneously, particularly algae is had the good restraining effect.The chinampa plant has not only been built the view of the water surface, is carrying out photosynthetic the time CO around absorbing
2Discharge O
2, purifying air simultaneously; Plant has transpiration in process of growth, transpiration is regulated envrionment temperature through the plant stomata transpiring moisture.Therefore, ecological floating island photosynthesis of plants and transpiration are being regulated the microclimate of the water surface, and this good microclimate is suitable for the habitat of birds etc.Because the shaded effects on chinampa, venturi effect etc. have been created the good condition of fish existence.
(2) submergence type is ecological bed
The ecological bed technology of submergence type is a kind of technology that adopts lake, submergence type ecological bed processing river, reservoir water body to pollute.Ecological bed buoyancy regulating device, the anchoring device of comprising of submergence type; Submerged plant bed, mikrobe bed, aerating apparatus, micropore aeration pipe; Wherein the ecological bed top of submergence type is the submerged plant bed, and the bottom is a removable type mikrobe bed, and micro-pore aeration system is established in subduction bed bottom; Subduction bed top is a buoyancy regulating device, and the bottom is an anchoring device.Submergence type is ecological bed both can regulate the depth of water according to institute's planting aquatic plants kind; Be fit to emergent, pleuston, submerged plant growth; For the growth of mikrobe under water body aerobic-anoxia condition in waterplant and the water provides condition, can regulate the bed body degree of depth according to river, lake, reservoir water body transparency condition again.Therefore; Using the ecological bed technology of submergence type can be low at water transparency, water-level fluctuation is big; The water ecology reparation is carried out in the waters that submerged plant is difficult to survive; Can bed body three-dimensional position be regulated and submergence type is ecological bed, change ecological bed submergence depth, make ecological bed range of application more extensive according to water quality condition.
The ecological bed upward submerged plant of submergence type absorbs nitrogen phosphorus and organism in the water in a large number; Be converted into self living weight; Can reach the purpose of removing water pollutant through the results plant; In addition, the oxygen that submerged plant photosynthesis produces is built the anaerobic-aerobic microenvironment around the root system, help mikrobe through nitrated-denitrification with N with ammonium nitrogen, N
2Intermediate gas and N such as O
2Form effusion water body.Different carriers has different nutritive salt adsorptive poweies; And different bacterial load abilities, under different condition of water quality, adhere to the reasonably combined of different media (azotobacter, organic matter degradation bacteria and adsorption medium etc.) and upper strata submerged plant through lower floor's carrier; Make up dissimilar pollutant purifications unit; Can subdue nutrition load, do not influence not only ecoscape or but also can reach the purpose of improving and beautifying the environment, simultaneously when river water body water quality is relatively poor; Can adopt subduction bed bottom aerating apparatus that water body is carried out aeration, strengthen evolution river water body water quality.
(3) bio-contact oxidation bed
The bio-contact oxidation bed is to adopt the extension mould material be suitable for microorganism growth, and utilizing dwells is attached to the microbial film and the oxygen of ample supply on the filler, through biological oxidation, with the decomposition of the oxidation operation in the waste water, reaches the purification purpose.The bio-contact oxidation bed accessory have handle that required time is short, strong to the change flexibility of water inlet organic loading, good purification, effluent quality is good and stablize, mud need not reflux advantage such as yet do not expand, power consumption is little, operational management is convenient.
(4) ecological permeable dam
The ecological permeable dam section is trapezoidal duplex; The slope coefficient of dam slope is 1: 1～1: 2.5, comprises following four parts: (A) key-course is positioned at the dam slope that meets water of ecological permeable dam; Dam material by 1mm～5mm constitutes, and its volume is 5%～15% of a whole permeable dike; (B) transition layer is positioned at ecological permeable dam inside, is made up of the dam material of 5mm～10mm, and its volume is 50%～65% of a whole permeable dike; (C) overflow layer is positioned at the dam crest of ecological permeable dam, is made up of the dam material of 10mm～40mm, accounts for 10%～15% of ecological permeable dam volume; (D) stabilizing layer is positioned at the backwater dam slope of ecological permeable dam, is made up of the dam material of 20mm～40mm, accounts for 20%～30% of ecological permeable dam volume.The topographical condition and inquiry hydrometeorological data or other design data of the design cycle of ecological permeable dam at first surveying the address of building a dam; Obtain the geometric parameter and the design discharge of ecological permeable dam; With carrying out tentative calculation in the Du Ping formula in the above-mentioned parameter substitution permeation fluid mechanics; Obtain the rational PQ and the residence time, carry out ecological permeable dam then and further design, select suitable gravel grating, dam material, plantation plant.
Ecological permeable dam has following significant advantage: unpowered operation, reduced construction cost, have good specific aim, can obtain the COD clearance about 10%, 10%～20% TN clearance, 20%～40% TP clearance.
3. beneficial effect
Invention provides the method for cutting low-pollution water load of venous riverway, and wherein ecological floating island technology, the ecological bed technology of submergence type, bio-contact oxidation technology made an experiment, and test result analysis is seen Fig. 6～11.Ecological floating island technology adopts emergent parasol grass and Canna generalis Bailey to make an experiment, and test-results shows that ecological floating island Technique on T N, TP removal effect are obvious, and wherein the parasol grass can reach 80% to TN, TP clearance.The ecological bed technology of submergence type adopts submerged plant hornwort and waterweed, and test-results shows that the ecological bed technology of submergence type is to SS, NH
4-N, NO
3-N, TN, TP removal effect are obvious, wherein NO
3-N, TN, TP clearance can reach more than 60%.The bio-contact oxidation technology adopts the ZH901 elastic solid filler to make an experiment, and test-results shows that the bio-contact oxidation technology is to SS, NH
4-N, TP, COD removal effect are obvious, wherein NH
4-N, TP, COD clearance can reach 60%.Through above each technological integrated use, can effectively improve sewage quality.
Through utilization of the present invention, the clearance of COD, ammonia nitrogen, total nitrogen and SS all can reach more than 60% in the vein river course.Finally make the vein river course obtain ecological effect and landscape effect preferably, interior fish of water body and higher plant are increased, the living weight of higher organism obtains bigger raising, and waterplant on the chinampa and insect and birds are increased, and artificial ecosystem is progressively set up.Through the ecological engineering construction of artificial regulatory, make water system mikrobe, waterplant, hydrocoles and substrate, water quality running balance, and progressively to natural recovery succession.It is long neglected and in disrepair to change the river course, and the water quality deterioration phenomenon realizes that the river course is functional, ecological property and the unification of view property, reaches the regulation effect of " water is clear, bank is green, scape beautiful ", for the geographic water correction in the network of waterways provides safeguard.
Description of drawings
Fig. 1 is the method structural representation of cutting low-pollution water load of venous riverway.
Fig. 2 is the ecological bed synoptic diagram of submergence type.
Fig. 3 is the bio-contact oxidation synoptic diagram.
Fig. 4 is the ecological floating island synoptic diagram.
Fig. 5 is the ecological permeable dam synoptic diagram.
In Fig. 6～11,0 represents starting point concentration, and 1 represents the concentration value in first week, and 2 represent the concentration in second week, and 3 represent the concentration in the 3rd week, and 4 represent the concentration in second week.BK represents blank, and SWJC represents bio-contact oxidation, HSC parasol grass, and MRJ represents Canna generalis Bailey, and YLZ represents waterweed, and JYZ represents hornwort.
Fig. 6 is ecological floating island technology, the ecological bed technology of submergence type, the bio-contact oxidation technology decontamination effect improving figure to SS in the sewage.
Fig. 7 is that ecological floating island technology, the ecological bed technology of submergence type, bio-contact oxidation technology are to NH in the sewage
4The decontamination effect improving figure of-N.
Fig. 8 is that ecological floating island technology, the ecological bed technology of submergence type, bio-contact oxidation technology are to NO in the sewage
3The decontamination effect improving figure of-N.
Fig. 9 is ecological floating island technology, the ecological bed technology of submergence type, the bio-contact oxidation technology decontamination effect improving figure to TN in the sewage.
Figure 10 is ecological floating island technology, the ecological bed technology of submergence type, the bio-contact oxidation technology decontamination effect improving figure to TP in the sewage.
Figure 11 is ecological floating island technology, the ecological bed technology of submergence type, the bio-contact oxidation technology decontamination effect improving figure to COD in the sewage.
Figure 12 is that the space layout figure that the vein stream load is cut down gordian technique is implemented in river course, area, the network of waterways, southern Jiangsu.
Among Figure 12,1. 6. represent ecological floating island and restoration of the ecosystem, 2. 5. represent ecological permeable dam, 3. represent submergence type ecological bed, 4. represent bio-contact oxidation.
Embodiment
With certain river course, area, the network of waterways, southern Jiangsu is that example has been carried out experimental study; To the pollution characteristic in this river course and the functional requirement of vein river course processing low-pollution water; Make up the vein river course; Design the vein stream load and cut down the demonstration project scheme, adopted the ecological bed technology of submergence type, bio-contact oxidation technology, ecological floating island technology etc. to transform nitrogen and phosphorous nutrient, strengthened purification river water body water quality.Ecological floating island and bank recovery technique are all adopted in the upper reaches, vein river course and downstream, and middle and upper reaches and middle and lower reaches adopt ecological bed technology of submergence type and bio-contact oxidation technology respectively, and design ecological permeable dam 2 places.Demonstration project practical implementation space layout is seen accompanying drawing 12.
In the 5m scope of two sides, the upper reaches, vein river course, take the bank to repair, plantation swamp cabbage, reed, cattail, yellow flag, wild rice stem, water chestnut, Canna generalis Bailey etc. form staggered band in land and water and bank buffer strip.Adopt the ecological floating island technology in the upper river, the ecological floating island design is long to be 2m, and wide is 1m; In the river course, place two row, be spaced apart 2m between per two, adopt the form of revetment tractive to fix; Plantation parasol grass, Canna generalis Bailey, cattail etc.; The chinampa underwater portion is placed microbe carrier, is covered with efficient denitrification bacterium (ammonification, nitrated, nitrosification, denitrifying bacterium) on it.Between the upper reaches, river course and the middle reaches ecological permeable dam is set, permeable dike is mainly made up by 5～10mm (volume(tric)fraction is 40%) rubble and 2～4cm (volume(tric)fraction is 60%) gravel.Permeable dike is a ladder structure along water (flow) direction, the long 4.6m of dam crest, and long 15.6m at the bottom of the dam, width are 12.7m, highly are 2.2m, and slope coefficient is 2.5 behind the dam counter-dam, and PQ is 0.10ms
-1Ecological permeable dam surface plantation Canna generalis Bailey, calamus etc., planting density is 40 strain m
-2It is ecological bed at middle reaches submergence type to be set earlier, and the ecological bed top of submergence type is the submerged plant bed, and the plantation plant is selected waterweed, hornwort; The bottom is a removable type mikrobe bed; Micro-pore aeration system is established in subduction bed bottom, and subduction bed top is a buoyancy regulating device, and the bottom is an anchoring device.At middle reaches bio-contact oxidation is set then, adopts the ZH901 elastic solid filler, submergence type is ecological bed to be 2m with bio-contact oxidation is all long, and wide be 1m, and high-order 0.6m places two and is listed as in the river course, is spaced apart 2m between per two.Before the downstream, river course, establish ecological permeable dam earlier, its parameter is identical with ecological permeable dam between the upper reaches, river course and the middle reaches.In the 5m scope of two sides, downstream, river course, take the bank to repair, plantation reed, cattail, yellow flag, Canna generalis Bailey, parasol grass etc.Adopt the ecological floating island technology in the river course, the ecological floating island design is long to be 2m, and wide be 1m, places two row in the river course, is spaced apart 2m between per two, plants parasol grass, Canna generalis Bailey etc.
Through the enforcement of cutting low-pollution water load of venous riverway demonstration project, the terminal change of water quality in effluent road can be found out the NH in the river
3Pollutant levels such as-N, TN, TP significantly descend terminal tail water NH
3-N, NO
3Pollution load reduction rates such as-N, TN, TP all reach more than 80%, and water quality is obviously improved.
The terminal water monitoring data (mg/L) in vein river course before and after table 1 engineering construction
Claims (2)
1. the method for cutting low-pollution water load of venous riverway the steps include:
(1) utilize the nearly natural type of abandoned channel or bottom land river course to make up the vein river course,
(2) in the vein river course, ecological floating island and bank are set at the upper reaches and repair band by water (flow) direction;
(3) between the upper reaches, vein river course and middle reaches, ecological permeable dam is set;
(4) at the vein middle reaches the ecological bed and bio-contact oxidation bed of submergence type is set;
(5) between vein middle reaches and downstream, ecological permeable dam is set;
(6) ecological floating island and bank are set in downstream, vein river course and repair band;
Wherein at ecological bed buoyancy regulating device, the anchoring device of comprising of submergence type described in the step (4); Submerged plant bed, mikrobe bed, aerating apparatus, micropore aeration pipe; Wherein the ecological bed top of submergence type is the submerged plant bed, and the bottom is a removable type mikrobe bed, and micro-pore aeration system is established in subduction bed bottom; Subduction bed top is a buoyancy regulating device, and the bottom is an anchoring device; Be ecological floating island plant-immobilization nitrogen-cycle bacteria mikrobe mutualism system at ecological floating island described in step (2) and (6) wherein, it can strengthen the nitrogen phosphorus of removing in lake, the river water, and step is:
A) on the collection of diving water body in lake, domestication, screening efficient denitrification bacterium, comprise Ammonifying bacteria, nitrobacteria, nitrite bacteria and denitrifying bacterium;
B) prepare and be suitable for microorganism growth, have the little environmental fixation support of biocompatibility, environment concordance;
The efficient nitrogen-cycle bacteria that C) will filter out is fixed on the biological compatibility carrier, prepares immobilization efficient denitrification bacterium;
D) adopt the ecological floating island technology vein river water body to be purified, set up ecological floating island plant-immobilization nitrogen-cycle bacteria mikrobe mutualism system reinforcement and remove lake, river water nitrogen phosphorus with immobilization nitrogen-cycle bacteria technology is integrated.
2. the method for cutting low-pollution water load of venous riverway according to claim 1; It is characterized in that the vein river course is the nearly natural type river course that utilizes abandoned channel or bottom land to make up, the river flow velocity is slow, self-purification capacity a little less than; Pollute slight; Had slight eutrophication phenomenon, riverbank are main with sloping bank, and vegetation is abundanter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102633756A CN101723520B (en) | 2009-12-18 | 2009-12-18 | Method for cutting low-pollution water load of venous riverway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102633756A CN101723520B (en) | 2009-12-18 | 2009-12-18 | Method for cutting low-pollution water load of venous riverway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101723520A CN101723520A (en) | 2010-06-09 |
| CN101723520B true CN101723520B (en) | 2012-07-04 |
Family
ID=42445173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102633756A Expired - Fee Related CN101723520B (en) | 2009-12-18 | 2009-12-18 | Method for cutting low-pollution water load of venous riverway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101723520B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913731B (en) * | 2010-07-28 | 2012-05-30 | 清华大学 | Method for controlling eutrophication of landscape water supplied by regenerated water |
| CN101973637B (en) * | 2010-11-04 | 2012-06-27 | 南京大学 | River channel purification system for processing rural domestic sewage |
| CN102219313B (en) * | 2011-02-23 | 2012-07-04 | 河海大学 | Method for improving water quality of steep-slope river by drop-aeration |
| CN102583704A (en) * | 2012-03-19 | 2012-07-18 | 无锡丰陆环保科技有限公司 | Processing method of ecological sewage |
| CN103942406B (en) * | 2014-02-12 | 2017-03-15 | 南京大学 | A kind of basin transboundary Regional Water Environment risk source risk characterization method |
| CN104030453B (en) * | 2014-06-25 | 2015-10-07 | 江苏东珠景观股份有限公司 | A kind of method using thorn eel grass to repair eutrophication water |
| CN104217102A (en) * | 2014-08-12 | 2014-12-17 | 中国环境科学研究院 | Integrated method for calculating volume and load capacity of low pollution water in lake basin |
| CN104591395B (en) * | 2015-01-27 | 2016-06-29 | 河海大学 | Plains region fills the water saving of row's coupling Ecological Irrigation District water circulation use and subtracts dirty method |
| CN104628143B (en) * | 2015-02-06 | 2017-05-17 | 河海大学 | Wetland decontamination method for drainage systems in ecological irrigation areas |
| CN107226585A (en) * | 2017-06-29 | 2017-10-03 | 山东毅康科技股份有限公司 | A kind of artificial river water body ecological restoring method in city |
| CN107721087A (en) * | 2017-11-22 | 2018-02-23 | 广东中环生态科技有限公司 | Black and odorous water multi-stage filtration systems and multistage purification technique |
| CN108046438A (en) * | 2018-01-18 | 2018-05-18 | 广东中环生态科技有限公司 | Creek ecological restoration of lakes system |
| CN108264198B (en) * | 2018-02-01 | 2020-07-24 | 宁波立升环保工程有限公司 | Treatment method of water-polluted river channel |
| CN110512563A (en) * | 2019-08-22 | 2019-11-29 | 上海勘测设计研究院有限公司 | One kind is regulated and stored system for flashy stream flood ecology |
| CN110713324A (en) * | 2019-11-22 | 2020-01-21 | 中国科学院水生生物研究所 | Ecological filter dam based on efficient in-situ interception of pollutants and application thereof |
| CN113640490B (en) * | 2021-10-18 | 2022-01-28 | 四川省水利科学研究院 | River and lake water ecological environment monitoring device, system and method based on Internet of things |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079293A (en) * | 2000-09-05 | 2002-03-19 | Marsima Aqua System Corp | Apparatus and method for maintaining water quality |
| KR20030012398A (en) * | 2001-07-31 | 2003-02-12 | 주식회사 아썸 | Wastewater treatment system based on ecological engineering and method the same |
| CN1621622A (en) * | 2004-12-10 | 2005-06-01 | 国家环境保护总局南京环境科学研究所 | Plain river network area surface source pollution reinforced depuration prepositive library system |
| CN101549937A (en) * | 2009-05-08 | 2009-10-07 | 云南省环境科学研究院 | Water quality in-situ purification method in river estuary |
-
2009
- 2009-12-18 CN CN2009102633756A patent/CN101723520B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079293A (en) * | 2000-09-05 | 2002-03-19 | Marsima Aqua System Corp | Apparatus and method for maintaining water quality |
| KR20030012398A (en) * | 2001-07-31 | 2003-02-12 | 주식회사 아썸 | Wastewater treatment system based on ecological engineering and method the same |
| CN1621622A (en) * | 2004-12-10 | 2005-06-01 | 国家环境保护总局南京环境科学研究所 | Plain river network area surface source pollution reinforced depuration prepositive library system |
| CN101549937A (en) * | 2009-05-08 | 2009-10-07 | 云南省环境科学研究院 | Water quality in-situ purification method in river estuary |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101723520A (en) | 2010-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101723520B (en) | Method for cutting low-pollution water load of venous riverway | |
| Lu et al. | Removal of water nutrients by different aquatic plant species: An alternative way to remediate polluted rural rivers | |
| CN106186343B (en) | A kind of comprehensive processing method to urban river | |
| Pan et al. | A review of ecological restoration techniques in fluvial rivers | |
| CN100378272C (en) | Stereo in-situ ecological urban water system repairing process | |
| CN110550829B (en) | Tower ecological purification integrated device of little town domestic sewage | |
| CN205011567U (en) | Biological wet land treatment system of domestic sewage | |
| US20150101981A1 (en) | Assemblies and methods for treating wastewater | |
| CN103265145B (en) | Method for purifying river water with low load and low temperature by using natural biofilm reactor | |
| CN102001753A (en) | Ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and construction method thereof | |
| CN104803558A (en) | Water purifying system and method suitable for low-flow-rate urban small watershed river network | |
| CN102897980A (en) | Combined town sewage treatment constructed wetland system and town sewage treatment method | |
| CN107585868B (en) | Water body deep purification system | |
| CN109607975B (en) | Constructed wetland structure for repairing super-eutrophic water body and endogenous pollution | |
| Huang et al. | Research and engineering application of bypass combined artificial wetlands system to improve river water quality | |
| Ni et al. | Demonstration research project of a new three-stage bio-oxidation pond for purifying black smelly water bodies | |
| CN102838208A (en) | River channel purifier technology for polluted river water quality improvement | |
| CN104724834B (en) | Periphyton processing system is utilized to remove method and the equipment thereof of copper in the sewage of source, face | |
| Jenssen et al. | The potential of natural ecosystem self-purifying measures for controlling nutrient inputs | |
| CN105692905B (en) | A kind of land disposal method and device of ecotype landscape water body | |
| Nikolić et al. | Wetlands, constructed wetlands and theirs role in wastewater treatment with principles and examples of using it in Serbia | |
| Jia et al. | Biological contact oxidation and an artificial floating island for black odorous river purification | |
| Borkar et al. | Tidal flow constructed wetland: An overview | |
| CN209974535U (en) | Artificial wetland sewage treatment device for northern cold regions | |
| CN202968310U (en) | Combined type artificial wetland system for municipal wastewater treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141218 |
|
| EXPY | Termination of patent right or utility model |