CN1312056C - Polluted water ecological treatment composite process - Google Patents

Polluted water ecological treatment composite process Download PDF

Info

Publication number
CN1312056C
CN1312056C CNB031339077A CN03133907A CN1312056C CN 1312056 C CN1312056 C CN 1312056C CN B031339077 A CNB031339077 A CN B031339077A CN 03133907 A CN03133907 A CN 03133907A CN 1312056 C CN1312056 C CN 1312056C
Authority
CN
China
Prior art keywords
bed
floating
water
wastewater processing
sewage
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.)
Active
Application number
CNB031339077A
Other languages
Chinese (zh)
Other versions
CN1590312A (en
Inventor
陈晓东
贾宏宇
常文越
林阳
孙铁珩
周启星
华涛
孙俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Applied Ecology of CAS
Shenyang Academy Environmental Sciences
Original Assignee
Institute of Applied Ecology of CAS
Shenyang Academy Environmental Sciences
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institute of Applied Ecology of CAS, Shenyang Academy Environmental Sciences filed Critical Institute of Applied Ecology of CAS
Priority to CNB031339077A priority Critical patent/CN1312056C/en
Publication of CN1590312A publication Critical patent/CN1590312A/en
Application granted granted Critical
Publication of CN1312056C publication Critical patent/CN1312056C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The present invention belongs to the technical field of sewage treatment techniques, and particularly to discloses pretreatment-artificial wetland sewage ecological treatment composite technology. The present invention uses a floating biologic-bed technique as pretreatment technology, adopts an undercurrent type artificial wetland system, and organically combines the floating biologic-bed technique with an artificial wetland sewage ecological treatment technique. The present invention comprises the following particular process: hoisting sewage passing through a regulating tank to a floating biologic-bed system for pretreatment by a water pump; precipitating water from a floating biologic bed in a precipitation tank and then putting the water into the undercurrent wetland system; thoroughly transporting concentrated sludge. The adoption of the present invention can improve sewage treatment efficiency, and also has the advantages of no limitation from areas and air temperature and small occupation area.

Description

A kind of ecological wastewater processing combination process
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, (water outlet can reach COD 50mg/L for water inlet COD 280mg/L, BOD 120mg/L both can to have improved the processing efficiency of sewage, BOD 10mg/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
Embodiment 1
Process object is typical sanitary sewage, COD 280mg/L, and BOD 120mg/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 COD 160-180mgL 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 COD 280mg/L, BOD 120mg/L, water outlet COD 50mg/L, BOD10mg/L.
Relevant comparative example
Handle similar sewage with the conventional activated sludge method, water outlet COD 100mgL -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 1, it is characterized in that: described gravel filling layer is the gravel bed of 4~8 layers of different-grain diameter, arrange that from top to bottom 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 promotes through the water lift pumping plant, enters the floating bio-bed system once more.
CNB031339077A 2003-09-04 2003-09-04 Polluted water ecological treatment composite process Active CN1312056C (en)

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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB031339077A CN1312056C (en) 2003-09-04 2003-09-04 Polluted water ecological treatment composite process

Publications (2)

Publication Number Publication Date
CN1590312A CN1590312A (en) 2005-03-09
CN1312056C true CN1312056C (en) 2007-04-25

Family

ID=34597117

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB031339077A Active CN1312056C (en) 2003-09-04 2003-09-04 Polluted water ecological treatment composite process

Country Status (1)

Country Link
CN (1) CN1312056C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1172772A (en) * 1997-06-18 1998-02-11 赤峰水处理技术开发公司 Sewage treatment method for subcurrent crushed stone plant bed
CN1333190A (en) * 2000-07-11 2002-01-30 中国科学院水生生物研究所 Sewage treatment method and equipment thereof
CN1390787A (en) * 2002-07-12 2003-01-15 华南师范大学 Artificial wet field facilities for treating sewage
US6531062B1 (en) * 2001-09-10 2003-03-11 Thomas J. Whitehill Wastewater treatment system for small flow applications
US6558555B1 (en) * 2001-07-03 2003-05-06 David A. Flowers Process and system for enhanced phosphorus removal in a wetland wastewater treatment facility

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1172772A (en) * 1997-06-18 1998-02-11 赤峰水处理技术开发公司 Sewage treatment method for subcurrent crushed stone plant bed
CN1333190A (en) * 2000-07-11 2002-01-30 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
CN1390787A (en) * 2002-07-12 2003-01-15 华南师范大学 Artificial wet field facilities for treating sewage

Also Published As

Publication number Publication date
CN1590312A (en) 2005-03-09

Similar Documents

Publication Publication Date Title
CN2661680Y (en) Sewage ecological treatment arrangement for artificial wetland
CN101948214B (en) Ecological greenbelt treatment process and system for treating rural domestic sewage
CN100371269C (en) Method and installation for treating domestic sewage by using artificial wetland
CN100400438C (en) Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system
CN104030440B (en) A kind of multithread state strengthening composite under-current artificial wetland system and using method thereof
CN101284705A (en) Tower type earthworm and ecological filter for treating sewage
CN209651979U (en) A kind of composite vertical current artificial wetland
CN101538086A (en) Power-free integrated constructed wetland waste water treatment technology
CN1597562A (en) System and method for treating of sewage by combined artificial wet land
CN105645677A (en) Horizontal flow/vertical flow integrated artificial wetland and operation method thereof
CN1312056C (en) Polluted water ecological treatment composite process
CN105645589B (en) Deep-bed constructed wetland reactor capable of converting operation modes
CN202766358U (en) Reinforced constructed wetland device for deep wastewater treatment
CN204509035U (en) Complex media marsh sewage treatment system
CN1305780C (en) Four-segment type sewage treatment system for dispersed residences
CN109607801A (en) A kind of composite artificial marsh sewage treatment system of denitrogenation dephosphorizing
CN206692417U (en) A kind of three-dimensional composite constructed wetland system
CN1978342A (en) Comhined-flow artificial wet land and its application system
CN104016546A (en) Environment-friendly artificial wetland system for purifying dredging remained water/tail water
CN112142258A (en) Resource and standard treatment method for domestic sewage of villages and towns
CN110127959B (en) Artificial wetland water purification method
CN104556532A (en) Artificial wetland purifying system
CN207713502U (en) A kind of regeneration effluent process system
CN206447733U (en) A kind of oil-containing sewage treatment system
CN102964033B (en) Covering layer for water quality purification of leachate and enhanced oxidation of methane in landfill and treatment method of leachate

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