CN103395885A - Artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and preparation method thereof - Google Patents
Artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and preparation method thereof Download PDFInfo
- Publication number
- CN103395885A CN103395885A CN2013103132510A CN201310313251A CN103395885A CN 103395885 A CN103395885 A CN 103395885A CN 2013103132510 A CN2013103132510 A CN 2013103132510A CN 201310313251 A CN201310313251 A CN 201310313251A CN 103395885 A CN103395885 A CN 103395885A
- Authority
- CN
- China
- Prior art keywords
- artificial wetland
- slag
- matrix
- composite matrix
- steel
- 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.)
- Pending
Links
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
- Water Treatment By Sorption (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to an artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and a preparation method thereof. The artificial wetland composite matrix comprises the following components in percentages by weight: 50% of coarse sand, 30% of gravel, 4% of wood dust, 10% of titanium-making waste slag, 3% of steel-making blast furnace slag and 3% of steel slag. The preparation method of the artificial wetland composite matrix comprises the following steps: airing required raw materials of the artificial wetland composite matrix to dryness; crushing the titanium-making waste slag through a 2cm sieve screen, and uniformly mixing the coarse sand, the gravel, the wood dust, the steel-making blast furnace slag and the steel slag in percentage by weight so as to prepare the artificial wetland composite matrix. The artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and the preparation method of the artificial wetland composite matrix have the following advantages that (1) the technology is simple and easy to carry out; (2) the raw materials are sufficient, low in cost and easily obtained from the market; (3) the formula of the raw materials is reasonable, and each raw material is particularly effective; (4) the formula of the raw materials is innocuous and unpoisonous without causing secondary environmental pollution.
Description
Technical field
The present invention relates to a kind of artificial wetland combination matrix and preparation method thereof, specifically a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing and preparation method thereof.
Background technology
Country sewage comprises production waste and two aspects of sanitary sewage, and characteristics are substantially not contain heavy metal and hazardous and noxious substances, contain a certain amount of nitrogen and phosphorus, and biodegradability is good, but the water quality and quantity variation greatly, and sewage centralized collection intractability is larger.For Rural Areas of China lack of capital, the situation of energy deficiency, take that one-time investment is low, energy consumption is low, stable, working cost is low, maintenance management easily practical technique be the main path that solves Chinese countryside sewage pollution problem.Constructed wetland waste water treatment technology is to utilize the absorption of root system of plant and the effect of microorganism, and the purpose that reaches pollution degradation, purifies water through bed filtration, it is a kind of less investment, technique is simple, energy consumption is low, safeguard widespread pollution from the overuse of fertilizers and pesticides in rural area Controlling System simply and easily, be the country sewage Practical Processing Technique that meets China's actual conditions, vast potential for future development will be arranged.
Matrix claims again filler, it is the carrier of Wastewater Treatment by Constructed Wetlands, the selection of its kind, proportioning and height is the core of Wastewater Treatment by Constructed Wetlands technology, matrix type can be divided into three major types: natural materials, industry byproduct, artificial products, the selection of matrix need be followed the principles such as being easy to get of material, efficient, inexpensive and safety non-toxic, at first, the local materials that screening is strong to contaminant removal capacity, detergent power and the Cost reduction input of artificial swamp to sewage can be improved like this, the work-ing life of ecological engineering can be extended again; Secondly,, due to the larger difference of permeability coefficient existence of different substrates, should select different matrix according to different Design of Constructed Wetlands; Again, exist complementary effect or synergistic effect between different substrates, together, the effect of removing nitrogen phosphorus during than single application may be better for two or more substrate combination.
At present, because existing, the contamination class of sewage and pollution load vary, existing product all can not effectively be removed the nutritive salt such as nitrogen in country sewage and phosphorus, up to the present, occur not yet on market that technique is simple, raw material is sufficient, with low cost, successful, use waste residue as a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing of active matrix and preparation method thereof.
Summary of the invention
The object of the present invention is to provide a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing and preparation method thereof, this composite substrate and preparation method thereof technique is simple, raw material is sufficient, with low cost, successful.
For achieving the above object, the technical solution used in the present invention is as follows: by weight percentage, the artificial wetland combination matrix components is: coarse sand 50%, gravel 30%, wood chip 4%, refining titanium waste residue 10%, steel-making blast furnace slag 3%, slag 3%.
Described coarse sand refers to that gravel grain content is not more than 25%, and particle diameter surpasses the sand of total mass 50% greater than the content of 0.5mm.The particle diameter of described gravel is between 4-8mm.Described refining titanium waste residue is the block GYPSUM RUBRUM that forms after the spent acid of Wingdale neutralisation of sulphuric acid method titanium white Process generation.Described steel-making blast furnace slag be Steel Plant make take vitreum as main particulate grain slag, particle diameter is less than 5mm.The slag that described slag is discharged for steel-making, particle diameter is less than 10cm.
Artificial wetland combination matrix composition method: after the described material dry of artificial wetland combination matrix, broken refining titanium waste residue, cross the 2cm screen cloth standby.By weight percentage, with 50% coarse sand, 30% gravel, 4% wood chip, the refining of 10% after sieving titanium waste residue, 3% blast furnace slag and 3% slag mix, and namely make artificial wetland combination matrix.
The present invention has following advantage:
1, technique of the present invention is simple, easily implements, and not only is fit to batch production production, also is fit to individual producer and produces.
2, raw material of the present invention is sufficient, and is cheap.In main raw material, the market value of coarse sand per ton is 100 yuan of left and right, and the market value of gravel per ton is 100 yuan of left and right, and after screening, cost is about 300 yuan/tons, and industry and mining waste price is more cheap, and price per ton is about 50 yuan.
3, the composition of raw materials in the present invention is reasonable.Every kind of raw material all has distinctive effect: the steel-making blast furnace slag contains certain calcium, magnesium, aluminum oxide, and is better to the removal effect of total nitrogen, and its leachate is weakly alkaline (pH is about 10.1).Slag contains certain calcium, iron and manganese oxides, and is better to the removal effect of total phosphorus, but its leachate is strong basicity (pH is about 12.1).Refining titanium waste residue contains a large amount of gypsum and small part iron titanium oxide, with can remarkable lifting sewage after blast furnace slag and slag mix in the clearance of total nitrogen and total phosphorus, its leachate is weakly alkaline (pH is about 7.7), can reduce the alkalescence of mixed-matrix leachate.Adding wood chip in Wetland Substrate can provide organic carbon source for heterotrophic denitrification bacterium in artificial swamp, promotes denitrification, strengthens the removal efficiency of total nitrogen.Coarse sand and gravel can improve the porosity of artificial swamp, strengthen the current handling capacity, for the nitrification and denitrification bacterium provides effects such as adhering to hole.
4, the composition of raw materials that uses in the present invention is nontoxic, can not cause secondary environmental pollution, and can will refine titanium waste residue, slag, the utilization of waste as resource of blast furnace slag industry and mining, thereby preserves the ecological environment.
5, the present invention is a kind of artificial wetland combination matrix, can effectively remove nitrogen and phosphorus in country sewage.
Description of drawings
Fig. 1 is the present invention applies in a vertical subsurface flow wetland schematic diagram.
Fig. 2 to be the present invention use in a vertical subsurface flow wetland application network of drains and the water distribution pipe network schematic diagram of arranging.
Fig. 3 is the present invention treatment effect schematic diagram-pH to country sewage in application examples.
Fig. 4 is the present invention's treatment effect schematic diagram-ammonia nitrogen to country sewage in application examples.
Fig. 5 is the present invention's treatment effect schematic diagram-nitric nitrogen to country sewage in application examples.
Fig. 6 is the present invention's treatment effect schematic diagram-total nitrogen to country sewage in application examples.
Fig. 7 is the present invention's treatment effect schematic diagram-total phosphorus to country sewage in application examples.
Network of drains 2, layer of displacement 3, hypothallus 4, water distribution layer 5, water distribution pipe network 6, reed in the drawings, 1.
Embodiment
Embodiment
Gravel is crossed the 4mm screen cloth, and particle diameter, makes within the particle diameter of gravel is controlled at 4-8mm after 8 mm screen clothes greater than the gravel of 4mm, and is after the 4-8mm gravel is rinsed well with tap water, air-dry standby; Coarse sand, wood chip, refining titanium waste residue, steel-making blast furnace slag, that slag is laid on respectively cement flooring is air-dry; Rap refining titanium waste residue after air-dry with iron hammer, made it the screen cloth of 2cm, obtain particle diameter standby less than the refining titanium waste particle of 2cm; After all material is air-dry, take the 50kg coarse sand, the 30kg particle diameter is the gravel of 4-8mm, 4kg wood chip, 10kg particle diameter be less than the refining titanium waste particle of 2cm, 3kg steel-making blast furnace slag, the 3kg slag mixes, and namely makes artificial wetland combination matrix.
Described coarse sand and gravel are all purchased from local building materials market; Described wood chip is purchased from local wood-working factory; Described refining titanium waste residue is the waste of titanium white production producer, is the block GYPSUM RUBRUM that forms after the spent acid of Wingdale neutralisation of sulphuric acid method titanium white Process generation; Described steel-making blast furnace slag be Steel Plant make take vitreum as main particulate grain slag, particle diameter is less than 5mm.The slag that described slag is discharged for steel-making, particle diameter is less than 10cm.
Application examples
Set up the vertical subsurface flow wetland pilot system at the country sewage junction, pilot system arranges 2 parallel vertical subsurface flow wetland units that connect, and each unit uses long 2m, wide 1m, the reinforced concrete casing of dark 1m.
As Fig. 1, as shown in Figure 2, vertical subsurface flow wetland unit is followed successively by network of drains 1, layer of displacement 2, hypothallus 3, water distribution layer 4 and water distribution pipe network 5 from top to bottom; It is characterized in that: the pipeline of network of drains 1 is the pvc pipe of diameter 25mm, along the cruciate flower hole of the every 50mm placement diameter of drainage direction 10mm, the thick 20cm of layer of displacement 2, be comprised of the pebbles of particle diameter 8-32 mm, hypothallus 3 thickness are 60cm, artificial wetland combination matrix, consist of; Plant in hypothallus 3 that reed 6(planting density is arranged is 15 strains/m
2); Water distribution layer 4 thickness are 10cm, the pebbles of particle diameter 8-32 mm, consist of; The pipeline of water distribution pipe network 5 is the pvc pipe of diameter 25mm, the cruciate flower hole of every 50mm placement diameter 10mm along inflow direction; Can lay and get final product successively from top to bottom in order in application process.
Country sewage, through grid, alternately flowed into one of them vertical-flow wetland unit in every 12 hours, and hydraulic detention time is 52 hours, and hydraulic load is 0.25 m
3/ (m
2D), sewage quality is as shown in table 1.
Table 1 sewage quality table
The pilot system run duration, the reed growth is vigorous, well developed root system, and high at inferior annual survival rate, the highest plant height can reach 1.5m, and the breeding stem reaches 22 strains; Application result shows: the artificial wet land system that this composite substrate is filled can effectively be removed the nitrogen phosphoric in country sewage.
As shown in Figure 3, approximately pH is lower than 9.0 after 5 months in wetland operation, and water outlet pH maintains between 7.5-8.8.
As shown in Figure 4, TAN reduces 0.08-2.49 mg/L, and average removal rate is 64.42%, goes out water concentration all the time lower than 1.0 mg/L.
As shown in Figure 5, the nitric nitrogen total amount reduces 0.23-3.16 mg/L, and average removal rate is 80.34%, goes out water concentration all the time lower than 1.5 mg/L.
As shown in Figure 6, the total nitrogen total amount reduces 0.3-3.14 mg/L, and average removal rate is 62.74%, and total nitrogen (in nitrogen) goes out water concentration all the time between 0.33-2.78 mg/L, the artificial swamp operation approximately after 3 months lower than 1.0 mg/L.
As shown in Figure 7, the total phosphorus total amount reduces 0.06-0.84 mg/L, and average removal rate is 86.43%, and total phosphorus (in phosphorus) goes out water concentration all the time lower than 0.05mg/L.
Can find out from application result, described composite substrate is applied in vertical current constructed wetland, go out water concentration and substantially can reach " water environment quality standard " (3838-2002) III class water quality standard, meet " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level category-A standard fully.
Claims (7)
1. artificial wetland combination matrix that is used for the country sewage denitrogenation dephosphorizing is characterized in that the artificial wetland combination matrix components is: by weight percentage, and coarse sand 50%, gravel 30%, wood chip 4%, refining titanium waste residue 10%, steel-making blast furnace slag 3%, slag 3%.
2. a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing according to claim 1, is characterized in that described coarse sand refers to that gravel grain content is not more than 25%, and particle diameter surpasses the sand of total mass 50% greater than 0.5mm content.
3. a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing according to claim 1, is characterized in that the particle diameter of described gravel is between 4-8mm.
4. a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing according to claim 1, is characterized in that described refining titanium waste residue is the block GYPSUM RUBRUM that forms after the spent acid of Wingdale neutralisation of sulphuric acid method titanium white Process generation.
5. a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing according to claim 1, it is characterized in that described steel-making blast furnace slag be Steel Plant make take vitreum as main particulate grain slag, particle diameter is less than 5mm.
6. a kind of matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing according to claim 1, is characterized in that the slag that described slag is discharged for steel-making, and particle diameter is less than 10cm.
7. the preparation method of the described matrix of artificial wetland combination for the country sewage denitrogenation dephosphorizing of claim 1 is: it is characterized in that after each material dry of the described artificial wetland combination matrix of claim 1, broken refining titanium waste residue, cross the 2cm screen cloth standby, by weight percentage, with 50% coarse sand, 30% gravel, 4% wood chip, 3% blast furnace slag, 3% slag and sieve after 10% refining titanium waste residue mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103132510A CN103395885A (en) | 2013-07-24 | 2013-07-24 | Artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103132510A CN103395885A (en) | 2013-07-24 | 2013-07-24 | Artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103395885A true CN103395885A (en) | 2013-11-20 |
Family
ID=49559682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103132510A Pending CN103395885A (en) | 2013-07-24 | 2013-07-24 | Artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103395885A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045163A (en) * | 2014-06-26 | 2014-09-17 | 南京师范大学 | Method for improving artificial wetland sewage treatment performance by using titanium-containing blast furnace slags |
| CN105668712A (en) * | 2016-03-01 | 2016-06-15 | 湖北大学 | Eutrophicated water dephosphorization filler and method thereof |
| CN106554139A (en) * | 2017-01-18 | 2017-04-05 | 山东大学 | A kind of phyteral packing artificial current wetland is constructed and operation method |
| CN107573149A (en) * | 2017-09-08 | 2018-01-12 | 武汉钢铁有限公司 | A kind of planting technique soil for sponge city |
| CN116018997A (en) * | 2023-02-02 | 2023-04-28 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for improving high-phosphorus pollution post-dredging dehydration sediment to be used as greening planting soil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772650A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Matrix composition recipe for sewage treating artificial wet land |
-
2013
- 2013-07-24 CN CN2013103132510A patent/CN103395885A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772650A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Matrix composition recipe for sewage treating artificial wet land |
Non-Patent Citations (1)
| Title |
|---|
| 连小莹等: "人工湿地对农村生活污水的处理效果研究", 《中国农村水利水电》, no. 2, 31 December 2011 (2011-12-31) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045163A (en) * | 2014-06-26 | 2014-09-17 | 南京师范大学 | Method for improving artificial wetland sewage treatment performance by using titanium-containing blast furnace slags |
| CN104045163B (en) * | 2014-06-26 | 2016-02-24 | 南京师范大学 | A kind of method utilizing titanium-containing blast furnace slag to promote Wastewater Treatment by Constructed Wetlands performance |
| CN105668712A (en) * | 2016-03-01 | 2016-06-15 | 湖北大学 | Eutrophicated water dephosphorization filler and method thereof |
| CN106554139A (en) * | 2017-01-18 | 2017-04-05 | 山东大学 | A kind of phyteral packing artificial current wetland is constructed and operation method |
| CN107573149A (en) * | 2017-09-08 | 2018-01-12 | 武汉钢铁有限公司 | A kind of planting technique soil for sponge city |
| CN107573149B (en) * | 2017-09-08 | 2020-12-08 | 武汉钢铁有限公司 | Greening planting soil for sponge city |
| CN116018997A (en) * | 2023-02-02 | 2023-04-28 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for improving high-phosphorus pollution post-dredging dehydration sediment to be used as greening planting soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102731001B (en) | Phosphogypsum composite pretreatment technique | |
| CN102775019B (en) | Coupling type sewage de-phosphorization purification regeneration treatment technique | |
| CN103395885A (en) | Artificial wetland composite matrix for nitrogen and phosphorus removal of rural sewage and preparation method thereof | |
| CN102746023B (en) | Constructed wetland matrix filling material for simultaneous nitrogen and phosphorus removal and its preparation method | |
| CN101514053B (en) | Eutrophication water body artificial wetland processing system taking steel-making waste residue as a substrate | |
| CN104773929A (en) | Zero-valent iron/microorganism composite percolation wall purification system for domestic sewage of irrigated area | |
| CN102874930B (en) | Dedicated filler for constructed wetland and preparation method for filler | |
| CN104190698A (en) | Method for restoring clayed soil of high-load heavy metal polluted site | |
| Kledyński et al. | Condition of circular economy in Poland | |
| CN100457693C (en) | Environmental organic nutrient soil as well as preparation technique and application thereof | |
| CN107586003A (en) | Sludge treating agent and method for sludge treatment | |
| CN102344295A (en) | Production technology for sintering perforated brick from polluted sludge | |
| CN111448968B (en) | Method for preparing greening soil by improving tail mud of water works | |
| CN108435126A (en) | A kind of dregs composite decoloration dephosphorization material and its forming method | |
| CN109013686B (en) | Soil remediation device for soil polluted by organic matters | |
| CN104556564B (en) | A kind of multimedium artificial swamp is sewage purification bed | |
| CN109279699A (en) | A kind of enhanced compounded mix can be used for the processing of face source runoff pollution | |
| CN101508507B (en) | Ecological-artificial percolation filtration water treatment system and method for dispersion type domestic wastewater | |
| CN108083435A (en) | A kind of buried phosphate fertilizer reclamation set and sewage water treatment method on the spot | |
| CN209721711U (en) | A kind of composite artificial marsh sewage treatment system of denitrogenation dephosphorizing | |
| CN108569819A (en) | A kind of vertical current constructed wetland low-pollution water processing system | |
| CN107803063A (en) | A kind of slag filter material for sponge urban construction and preparation method thereof | |
| CN206538267U (en) | A kind of ecological gravel bed of black and odorous water repairing and treating | |
| CN204798990U (en) | Effluent treatment plant based on wet flue gas desulfurization system | |
| Kacprzak | The circular economy concept in the municipal wastewater and sewage sludge management–site-specific cases from Poland |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131120 |