CN1590312A - Polluted water ecological treatment composite process - Google Patents
Polluted water ecological treatment composite process Download PDFInfo
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- CN1590312A CN1590312A CN 03133907 CN03133907A CN1590312A CN 1590312 A CN1590312 A CN 1590312A CN 03133907 CN03133907 CN 03133907 CN 03133907 A CN03133907 A CN 03133907A CN 1590312 A CN1590312 A CN 1590312A
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Abstract
A process for treating sewage by ecological method includes such steps as regulating pH value in regulation pool, pumping into floated biobed system, pretreating, depositing in position pool, treating by underflow-type artificial nunja system, and concentrating mud.
Description
Technical field
The invention belongs to technical field of sewage, specifically a kind of pre-treatment-artificial swamp ecological wastewater processing combination process.
Background technology
The artificial swamp sewage disposal is one of most important type of ecological wastewater processing, it is that sewage is controlledly batched on the soil, utilize physics, chemistry, the biological property of soil-hygrophyte-microorganism composite system that the liquid manure resource in the sewage is recycled, the Technology that degradable pollutent in the sewage is purified, it not only plays the effect of sewage purification, and, form unique artificial naturally complex ecological view by building the wetland environment.It is low with the artificial wet land system to be that the sewage ecological treatment system of representative has an investment, and effluent quality is good, anti-impact force is strong, the increase greenery area, improve and beautify numerous advantages such as ecotope, simple to operate, maintenance and working cost are cheap.
Artificial swamp ecological wastewater processing technology was used widely since the seventies in 20th century, but the excessive serious application of this technology that limited of treatment system floor space in China, and, at northern area, winter, low excessively temperature also seriously limited this The Application of Technology scope (document 1: Sun Tiehang, Zhou Siyi etc., municipal effluent land treatment system technical manual, 1997, Beijing, the China Environmental Science Press; Document 2: Gao Zhengmin, Li Xianfa etc., municipal effluent soil processing and utilizing design manual, 1991, Beijing, China Standard Press).
Summary of the invention
The object of the invention provides a kind of can improve the processing efficiency of sewage, be not subjected to the area, temperature restriction and the less ecological wastewater processing combination process of floor space.
Technical solution of the present invention is: adopt the preprocessing part of controllable type floating bio-bed technology as system, simultaneously the subsurface constructed wetland internal structure is optimized, realize the combination of floating bio-bed technology and artificial swamp ecological wastewater processing technology; In the floating bio-bed technology winter with adopt different operation scheme (by different gas-water ratio control) in spring and summer autumn, when guaranteeing treatment effect, reduce the working cost of Sewage treatment systems to greatest extent, artificial swamp sewage ecological treatment system and urban ecology landscape construction are realized organically combining simultaneously; Technical process is: get sewage and carry out pre-treatment by water pump lifting to the floating bio-bed system through behind the equalizing tank, the floating bio-bed water outlet enters subsurface flow wetland system through the settling tank post precipitation, and mud is cleared after concentrating;
Wherein: described floating bio-bed processing parameter is: in the non-plant season of growth, the gas-water ratio of control floating bio-bed system is 8: 1-10: 1; In vegetation season, control floating bio-bed system gas-water ratio is 3: 1-4: 1; Described subsurface flow artificial wetland system is the water distribution manner that horizontal flow combines with vertical current; Described wet land system is made up of the impervious barrier of mild clay layer, sand layer and gravel filling layer and bottom; Described gravel filling layer is the gravel bed of 4～8 layers of different-grain diameter, from top to bottom, the ascending layout of particle diameter, the diameter of first gravel bed and bottom gravel bed is that d20-d30 millimeter, middle gravel bed diameter are respectively the d5-d15 millimeter, the d10-d25 millimeter sets gradually; Described impervious barrier is that clay, waterproof cloth, clay set gradually for three layers; Part mud behind undercurrent type wetland can promote through the water lift pumping plant, enters the floating bio-bed system once more.
The present invention has following beneficial effect:
1. the present invention organically combines floating bio-bed technology and artificial swamp ecological wastewater processing technology, pretreatment technology adopts controllable type floating bio-bed technology, wetland is handled and is adopted subsurface flow artificial wetland system, wherein undercurrent type wetland is the water distribution manner that horizontal flow combines with vertical current, both can improve sewage processing efficiency (water inlet COD280mg/L, BOD120mg/L, water outlet can reach COD50mg/L, BOD10mg/L), can guarantee the operation all the year round of system again.
2. adopting Sewage treatment systems of the present invention to handle sanitary sewage not limited by area, temperature.In the winter time, owing to improved the gas-water ratio (8: 1～10: 1) of floating bio-bed system, make the water outlet of floating bio-bed system can reach town B-grade sewage treatment plant secondary standard, the water outlet of floating bio-bed system can reach the water quality standard of reclaimed water reuse in landscape water body after artificial wet land system is handled.In summer, owing to reduced floating bio-bed system gas-water ratio (3: 1～4: 1), make the water outlet of floating bio-bed system be better than conventional one-level treat effluent, make full use of the purification function of artificial wet land system, system's effluent quality reaches the water quality standard of reclaimed water reuse in landscape water body.
3. floor space is little, handles 1m
3/ d sewage only need take up an area of 2～4m
2
4. adopt the present invention artificial swamp sewage ecological treatment system and urban ecology landscape construction can be realized organically combining, and be specially adapted to the northern area of China.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 is a undercurrent type wet land system structural representation of the present invention.
Fig. 3-1 is water spraying pipe or a header boring cross section structure synoptic diagram among Fig. 2.
Fig. 3-2 is water spraying pipe or a header boring side structure synoptic diagram among Fig. 2.
Embodiment
Process object is typical sanitary sewage, COD280mg/L, and BOD120mg/L adopts technology shown in Figure 1 to handle.Sewage is through equalizing tank (grid, settling pit), carry out pre-treatment by water pump lifting to floating bio-bed system, settling tank is advanced in the floating bio-bed water outlet, the settling tank water outlet enters horizontal drowned flow and constructs wet land system, mud is cleared (part mud can promote through the water lift pumping plant, enters the floating bio-bed system once more) after concentrating.
In the preprocessing process, adopt the operation scheme of one-level processing and intermittent aeration vegetation season (summer), only guarantee that the floating bio-bed filler reaches suspended state, the characteristics of floating bio-bed system are that gas-water ratio is 3: 1, can remove about COD more than 1/3 in the sewage
Cr, COD
CrDrop to 160～180mgL
-1, BOD
5Reduce to 70-80mgL
-1, can satisfy the water quality requirement that wetland is intake; The non-plant season of growth (winter) then increases aeration rate (present embodiment floating bio-bed system gas-water ratio is 8: 1), improves system's operating load, and water outlet can reach COD
CrValue 100-120mgL
-1, BOD
5Value 50mgL
-1, can reduce because winter temperature reduces, wetland is handled load and is descended to the influence of water outlet effect with processing efficiency, can safeguards system steady running in winter.
Shown in Fig. 2,3, enter the compound current wetland that horizontal flow combines with vertical current through the sewage after the floating bio-bed processing, wet land system is made up of the gravel filling layer and the impervious barrier of mild clay layer, sand layer and 4 layers of different-grain diameter, and the diameter of 4 layers of gravel is respectively 25～30,8～10,15～20,20～30 millimeters from top to bottom.The bottom is an impervious barrier, and impervious barrier is followed successively by clay, waterproof cloth, clay three-layer protection, guarantees the recovery and the utilization of system's water outlet, and the plantation plant is a reed.In spring and summer autumn, the water inlet COD160-180mgL of artificial wet land system
-1, BOD
570-80mgL
-1, water outlet COD is lower than 50mgL
-1, BOD
5Be lower than 10mgL
-1
Every 10-15cm water distribution circular hole that 4 diameters are arranged is 1cm on the water spraying pipe of wet land system guarantees the water distribution uniformity of system; Water gathering system comprises header (identical with the water spraying pipe structure) and braiding channel, and the water shoot of the external adjustment height of header will be discharged by braiding channel behind the sewage collecting after handling.Water distributor and water spraying pipe are pvc pipe,
Described first gravel bed and water spraying pipe height are basic identical, and most of sewage is distributed in first gravel bed, and sewage horizontal plug-flow in wet land system combines with the vertical current motion, flows through behind each layer gravel filling layer, and the purification efficiency in the wet land system significantly improves.
Embodiment 2
Difference from Example 1 is: the floristics of artificial swamp is a wild rice stem in the present embodiment.
Adopt the operation scheme of one-level processing and intermittent aeration vegetation season (summer), only guarantee that the floating bio-bed filler reaches suspended state, floating bio-bed system gas-water ratio is 4: 1; The non-plant season of growth (winter) then increases aeration rate (present embodiment floating bio-bed system gas-water ratio is 10: 1).
Enter the compound current wetland that horizontal flow combines with vertical current through the sewage after the floating bio-bed processing, wet land system is made up of the gravel filling layer and the impervious barrier of mild clay layer, sand layer and 6 layers of different-grain diameter, and the diameter of 6 layers of gravel is respectively 20～25,5～10,10～15,15～20,20～25,25～30 millimeters from top to bottom.
Its effect: water inlet COD280mg/L, BOD120mg/L, water outlet COD50mg/L, BOD10mg/L.
Relevant comparative example
Handle similar sewage with the conventional activated sludge method, water outlet COD100mgL
-1, BOD
530mgL
-1
Claims (7)
1. ecological wastewater processing combination process, it is characterized in that: with the floating bio-bed technology is pretreatment technology, adopt subsurface flow artificial wetland system, floating bio-bed technology and artificial swamp ecological wastewater processing technology are organically combined, idiographic flow is: sewage is carried out pre-treatment through behind the equalizing tank by water pump lifting to floating bio-bed system, the floating bio-bed water outlet enters subsurface flow wetland system through the settling tank post precipitation, and mud is cleared after concentrating.
2. according to the described ecological wastewater processing combination process of claim 1, it is characterized in that: described floating bio-bed processing parameter is: in the non-plant season of growth, the gas-water ratio of control floating bio-bed system is 8: 1～10: 1; In vegetation season, control floating bio-bed system gas-water ratio is 3: 1～4: 1.
3. according to the described ecological wastewater processing combination process of claim 1, it is characterized in that: the water distribution manner that described undercurrent type wet land system adopts horizontal flow to combine with vertical current.
4. according to the described ecological wastewater processing combination process of claim 1, it is characterized in that: described undercurrent type wet land system is made up of the impervious barrier of mild clay layer, sand layer and gravel filling layer and bottom, arranges from top to bottom.
5. according to the described ecological wastewater processing combination process of claim 5, it is characterized in that: described gravel filling layer is the gravel bed of 4～8 layers of different-grain diameter, from top to bottom, the ascending layout of particle diameter, the diameter of first gravel bed and bottom gravel bed is that d20-d30 millimeter, middle gravel bed diameter are respectively the d5-d15 millimeter, the d10-d25 millimeter sets gradually.
6. according to the described ecological wastewater processing combination process of claim 5, it is characterized in that: described impervious barrier is that clay, waterproof cloth, clay set gradually for three layers.
7. according to the described ecological wastewater processing combination process of one of claim 1～6, it is characterized in that: the part mud behind undercurrent type wetland can promote through the water lift pumping plant, enters the floating bio-bed system once more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031339077A CN1312056C (en) | 2003-09-04 | 2003-09-04 | Polluted water ecological treatment composite process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031339077A CN1312056C (en) | 2003-09-04 | 2003-09-04 | Polluted water ecological treatment composite process |
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| Publication Number | Publication Date |
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| CN1590312A true CN1590312A (en) | 2005-03-09 |
| CN1312056C CN1312056C (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031339077A Expired - Fee Related CN1312056C (en) | 2003-09-04 | 2003-09-04 | Polluted water ecological treatment composite process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305780C (en) * | 2005-03-11 | 2007-03-21 | 南京大学 | Four-segment type sewage treatment system for dispersed residences |
| CN1325397C (en) * | 2005-08-08 | 2007-07-11 | 徐祖信 | Technique of undercurrent artificial wetland in sequence batch mode for treating sewage |
| CN105502801A (en) * | 2015-11-26 | 2016-04-20 | 交通运输部科学研究院 | Seasonal frozen region expressway service area combined sewage treatment system device and method thereof |
| CN112592000A (en) * | 2020-12-23 | 2021-04-02 | 河南永泽环境科技有限公司 | Rainwater park circulation reuse water processing system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075797C (en) * | 1997-06-18 | 2001-12-05 | 赤峰水处理技术开发公司 | Sewage treatment method for subcurrent crushed stone plant bed |
| CN1163427C (en) * | 2000-07-11 | 2004-08-25 | 中国科学院水生生物研究所 | Sewage treatment method and equipment thereof |
| US6558555B1 (en) * | 2001-07-03 | 2003-05-06 | David A. Flowers | Process and system for enhanced phosphorus removal in a wetland wastewater treatment facility |
| US6531062B1 (en) * | 2001-09-10 | 2003-03-11 | Thomas J. Whitehill | Wastewater treatment system for small flow applications |
| CN1173888C (en) * | 2002-07-12 | 2004-11-03 | 华南师范大学 | Artificial wet field facilities for treating sewage |
-
2003
- 2003-09-04 CN CNB031339077A patent/CN1312056C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305780C (en) * | 2005-03-11 | 2007-03-21 | 南京大学 | Four-segment type sewage treatment system for dispersed residences |
| CN1325397C (en) * | 2005-08-08 | 2007-07-11 | 徐祖信 | Technique of undercurrent artificial wetland in sequence batch mode for treating sewage |
| CN105502801A (en) * | 2015-11-26 | 2016-04-20 | 交通运输部科学研究院 | Seasonal frozen region expressway service area combined sewage treatment system device and method thereof |
| CN105502801B (en) * | 2015-11-26 | 2017-11-14 | 交通运输部科学研究院 | Seasonal frost region Expressway Service combined sewage water processing system devices and methods therefor |
| CN112592000A (en) * | 2020-12-23 | 2021-04-02 | 河南永泽环境科技有限公司 | Rainwater park circulation reuse water processing system |
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| Publication number | Publication date |
|---|---|
| CN1312056C (en) | 2007-04-25 |
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