CN1075797C - Sewage treatment method for subcurrent crushed stone plant bed - Google Patents
Sewage treatment method for subcurrent crushed stone plant bed Download PDFInfo
- Publication number
- CN1075797C CN1075797C CN97111400A CN97111400A CN1075797C CN 1075797 C CN1075797 C CN 1075797C CN 97111400 A CN97111400 A CN 97111400A CN 97111400 A CN97111400 A CN 97111400A CN 1075797 C CN1075797 C CN 1075797C
- Authority
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- China
- Prior art keywords
- bed
- rubble
- sewage
- gravel bed
- bed system
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000004575 stone Substances 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 6
- 230000003628 erosive effect Effects 0.000 claims description 4
- 238000000247 postprecipitation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 241000233948 Typha Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000238586 Cirripedia Species 0.000 description 1
- 244000143231 Scirpus validus Species 0.000 description 1
- 235000008573 Scirpus validus Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 240000001398 Typha domingensis Species 0.000 description 1
- 238000009305 arable farming Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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
- Biological Treatment Of Waste Water (AREA)
- Sewage (AREA)
Abstract
The present invention discloses a sewage treating method for an underflow rubble plant bed. Sewage passes through a grid to remove big suspended substances and then enters a settling tank; sludge is manually discharged periodically, and the sewage is discharged after flowing into two rubble beds connected in series. Each rubble bed comprises a bed body, a rubble layer in the bed, aquatic plants growing on the rubble bed, and a water inlet and a water outlet on the bed body. The grain size of the rubble is from 1cm to 10cm, and the thickness of the rubble bed is from 60cm to 100cm. The sewage treating method solves the problems of high manufacturing cost and running expenses in conventional second-stage sewage treating plants, big occupation area of other wet land sewage treating methods, etc. The sewage treating method for an underflow rubble plant bed is a good method for municipal sewage treatment and is especially suitable for northern areas.
Description
The present invention relates to a kind of sewage water treatment method, adopt the medium and small town sewage of artificial swamp technical finesse.
Hundred mud pits, China Shenzhen are built up an artificial swamp sewage-farm, are adopted stabilization pond-gravel bed system, also say and add a very big oxidation pond in the gravel bed system front with regard to thing, though this way treatment effect is fine, but investment is big, floor space is big, in addition, the at present domestic B-grade sewage treatment plant that generally uses, construction investment and running cost are very high.
The purpose of this invention is to provide a kind of sewage treatment method for subcurrent crushed stone plant bed, when guaranteeing wastewater treatment efficiency, reduce cost and operation cost, accomplish economic, practically in conjunction with Chinese boreal climate characteristics, reach the wastewater treatment efficiency of B-grade sewage treatment plant simultaneously.
Technical scheme of the present invention is as follows: sewage enters settling tank after grid is removed big suspended substance, sewage is through post precipitation, and mud is regularly discharged, and sewage is flowed through and discharged behind two placed in-line gravel bed systems; Gravel bed system is made up of the metalling in bed body, the bed, the waterplant and water-in, the water outlet of bed on the body that are planted on the metalling, and ballast grain sizes is 1-10cm, and metalling thickness is 60-100cm.
Waterplant is emergent in the aquatic tube bank plant such as reed, water erosion, Scirpus tabernaemontani, cattail etc.
Waterplant is chosen in and plants reed (phnagmifes ausfralis) in first, second plantation water erosion (typha angustifolia).
The best 80+5cm of metalling thickness, ballast grain sizes is 1-3cm.
Advantage of the present invention is:
1, construction investment is equivalent to the 1/4-1/5 of conventional second-stage treatment factory investment;
2, running cost is equivalent to the 1/5-1/6 with scale B-grade sewage treatment plant;
3, energy consumption is lower than B-grade sewage treatment plant;
4, compare with stabilization pond-gravel bed system Sewage treatment systems, floor space reduces greatly.
5, effluent quality be higher than national regulation B-grade sewage treatment plant go out water quality standard.
SS:20mg/L (water inlet is no more than 150mg/L)
COD:30mg/L (water inlet is no more than 300mg/L)
BOD:30mg/L (water inlet is no more than 160mg/L)
Embodiment: 1000 ton per day sewage works
Grid: 1 * 2m, the material steel is manually removed the grid slag;
Settling tank: 25 * 10 * 2.5 (available depth 2m), cement block structure, spoil disposal are regular manual operation;
Series connection secondary gravel bed system: 50 * 20 * 0.8 (rubble is dark) m; With more than the grey rammed earth 20cm, the bed body is become the dirt antiseepage by barnacle at the bottom of the pond; Ballast grain sizes 1-3cm, the rubble degree of depth is 80cm, goes up kind of a reed for first, goes up middle water erosion, every square metre of 6-9 cave, 2 in every cave for second.The sewage deep that enters gravel bed system is controlled at 80cm.
Settling tank is laid the Dg400 cement pipe to gravel bed system, and establishes the gradient 0.0005.
The water-in of device such as settling tank, gravel bed system is higher than water outlet, and the water outlet of a last device is higher than the water-in of next device, prevents to flow backwards.
The selection of ballast grain sizes:
Ballast grain sizes directly has influence on the medium porosity of a body and the growth conditions of crop.Design and control the degraded environment of the cultivation, growth and the pollutent that directly influence plant at the flow profile of artificial wet land system medium stone bed.Particle diameter is more little, and porosity is big more, and specific surface area is also big more, and fluid conductivity is more little, and first order reaction speed is big more, but blockage problem is big.1-3cm is adopted in particle diameter suggestion to rubble in the artificial swamp rubble.
Gravel bed system progression:
It is fixed that gravel bed system progression should come according to influent quality and degree of treatment, and former water organic concentration height or organism are driven the clearance requirement when high, and secondary is adopted in suggestion, otherwise, can adopt one-level.
The gravel bed system cross section:
The gravel bed system cross-sectional area should fill perhaps flow velocity according to gravel bed system rock filling concentration and a bed cross section maximum and determine.
The gravel bed system degree of depth:
The depth of fill of bed body medium stone depends on the maximum possible degree of depth that crop root is grown, and based on the experiment of California, USA santee system, reed, cattail are respectively 0.6m, 0.3m.The dark 0.6-0.7m that is generally of reed bed is recommended in the research of hundred mud pits, the enforcement period of the seventh five-year plan Shenzhen, and plants such as seat grass, cattail, Medulla Junci then are advisable with 0.45-0.6m.Because of northern area season temperature lower, freezing for considering, projected depth is 0.8+0.05m.
The gravel bed system width:
Single bedside degree water distribution system and outlet system Inlet and outlet water determine that evenly the dark h of known bed asks by following formula:
B-rubble width m in the formula;
H-gravel bed system degree of depth m;
Ac-gravel bed system cross-sectional area is perpendicular to current m
2The gravel bed system useful area: the volume of gravel bed system is determined according to hydraulic detention time.Hydraulic detention time can or have the field data of gravel bed system roughly the same or determines by test by the biological respinse dynamics formula.
Hydraulic detention time can be represented by the formula:
In the formula: t-hydraulic detention time d;
Q-sewage quantity m
3
V-gravel bed system useful volume m
3
V
k-gravel bed system void content, m
3
N-gravel bed system porosity
Gravel bed system is a plug flow reactor, and organic concentration is lower, and the available first order reaction kinetics of organic removal is represented:
Or
In the formula: Co-entering organic matter of water concentration BODmg/Lj;
Ce-outlet water organic substance concentration BODmg/Lj;
T-hydraulic detention time d;
K
T-reaction rate constant d
-1
Reaction rate constant is relevant with water temperature in the bed, can be represented by the formula:
K
T=k
201,1
T-20
K in the formula
20Reaction rate constant when water temperature is 20 ℃, relevant with the rubble porosity;
T-gravel bed system operating temperature ℃.
The rubble length L:
Known rubble degree of depth h and width B, gravel bed system length can be calculated with following formula:
Experiment shows that the gravel bed system length L should not be too big, otherwise not only quantities increases, and the possibility that occurs the slough in the bed body increases, and makes and the regulation of level difficulty be unfavorable for arable farming.According to test, L-generally need not be greater than 50m.
The gravel bed system construction requirement:
1, pool wall is built slabstone or brick around the antiseepage gravel bed system, protects the dirt antiseepage outward, at the bottom of the pond with 2: 8 grey rammed earth 20cm.
2, antifreezely consider that at northern area the frost heaving resistant problem should not adopt rigidity water-proofing material can adopt flexible materials to solve to freeze molten.
Claims (3)
1, sewage treatment method for subcurrent crushed stone plant bed is characterized in that: sewage enters settling tank after grid is removed big suspended substance, sewage is through post precipitation, and mud is regularly discharged, and sewage is flowed through and discharged behind two placed in-line gravel bed systems; Gravel bed system by the metalling in bed body, the bed, be planted in emergent in the aquatic tube bank plant on the gravel bed system and water-in, the water outlet on the bed body formed, ballast grain sizes is 1-10CM, metalling thickness is 60-100CM.
2, method according to claim 1 is characterized in that: waterplant is for planting reed, in second gravel bed system plantation water erosion in first gravel bed system.
3, according to claim 1 or 2 one of any described methods, it is characterized in that: metalling thickness 80+5CM, ballast grain sizes are 1-3CM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97111400A CN1075797C (en) | 1997-06-18 | 1997-06-18 | Sewage treatment method for subcurrent crushed stone plant bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97111400A CN1075797C (en) | 1997-06-18 | 1997-06-18 | Sewage treatment method for subcurrent crushed stone plant bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1172772A CN1172772A (en) | 1998-02-11 |
| CN1075797C true CN1075797C (en) | 2001-12-05 |
Family
ID=5171766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97111400A Expired - Fee Related CN1075797C (en) | 1997-06-18 | 1997-06-18 | Sewage treatment method for subcurrent crushed stone plant bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1075797C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2782508B1 (en) * | 1998-08-20 | 2000-11-03 | Suez Lyonnaise Des Eaux | METHOD AND FACILITIES FOR THE TREATMENT OF SMALL COMMUNITY EFFLUENTS |
| CN1312056C (en) * | 2003-09-04 | 2007-04-25 | 沈阳环境科学研究院 | Polluted water ecological treatment composite process |
| CN1298638C (en) * | 2005-04-20 | 2007-02-07 | 中南林学院环境工程研究所 | Combination type wetland system for wastewater treatment and technique of wastewater treatment |
| CN100551850C (en) * | 2006-04-29 | 2009-10-21 | 广州德润环保科技发展有限公司 | Composite ecological treatment method of sewage for artificial wet land and system thereof |
| CN103896462B (en) * | 2014-04-19 | 2015-06-24 | 岭南园林股份有限公司 | Wetland plant sewage disposal system and sewage disposal method |
| CN108952631A (en) * | 2018-09-12 | 2018-12-07 | 徐浩然 | A kind of scaler system and its technique for high mineralization geothermal well |
-
1997
- 1997-06-18 CN CN97111400A patent/CN1075797C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1172772A (en) | 1998-02-11 |
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| 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 | ||
| ASS | Succession or assignment of patent right |
Owner name: SUN FA Free format text: FORMER OWNER: CHIFENG WATER TREATMENT TECHNOLOGY DEVELOPMENT CORP. Effective date: 20031218 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20031218 Address after: 024000, Hongshan District, Hongshan District, the Inner Mongolia Autonomous Region, Chifeng City, east city sewage treatment plant in the hospital Patentee after: Sun Fa Address before: 024000 the Inner Mongolia Autonomous Region Chifeng Project Construction Committee Urban Construction Office Patentee before: Chifeng Water Treatment Technology Development Corp. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20011205 Termination date: 20100618 |