CN101979348A - Facultative biochemical-strengthened artificial wetland-based sewage treatment method - Google Patents
Facultative biochemical-strengthened artificial wetland-based sewage treatment method Download PDFInfo
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- CN101979348A CN101979348A CN2010105336345A CN201010533634A CN101979348A CN 101979348 A CN101979348 A CN 101979348A CN 2010105336345 A CN2010105336345 A CN 2010105336345A CN 201010533634 A CN201010533634 A CN 201010533634A CN 101979348 A CN101979348 A CN 101979348A
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- 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
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Abstract
The invention discloses a facultative biochemical-strengthened artificial wetland-based sewage treatment method, which mainly comprises the following steps of: (1) performing facultative biochemical treatment; (2) performing strengthened artificial wetland treatment; and (3) performing reflux treatment, wherein sewage to be treated firstly enters a facultative biochemical reactor for a facultative biochemical reaction to separate facultative sludge, effluent and a little produced gas; the effluent subjected to the treatment flows into the strengthened artificial wetland for further treatment; and 50 to 100 percent of effluent in the strengthened artificial wetland reflows into the facultative biochemical reactor for denitrification. The sewage treatment method can effectively improve the removal rate of wetland organic matters, ammonia nitrogen, total nitrogen and total phosphorus, adapts to characteristics of low water quantity and large water quantity change, has low investment cost, is convenient to debug and operate, is easy to manage, and does not need a specially-assigned person.
Description
Technical field
The invention belongs to sewage treatment area, particularly a kind of sewage water treatment method.
Background technology
Along with the propelling of Development of China's Urbanization, sewage disposal is an important component part.Sanitary sewage or the excrement and urine water of the whole nation more than 90% directly is discharged into basins such as underground or lake, eutrophication as Taihu Lake, Dian Chi all has part to come from sanitary sewage, the random discharging of sanitary sewage causes water surroundings such as rivers and lakes basin, underground water to be polluted.Administer sanitary sewage, can not only improve the resident living environment, the water pollution that can also the control catchment and the eutrophication in lake are improved water body environment, simultaneously treated in water be used for reuse, alleviate short water supply.At present, domestic large town domestic sewage treatment process is comparatively ripe, and treatment effect is stable, operational excellence.For the sanitary sewage of samll cities and towns or Rural areas, there is following characteristics: 1. population is few, and water supply standard is lower, the sewage disposal small scale; 2. complicated component because rainwater and underground water infiltrate, cause Pollutant levels lower, and fluctuation is very big, is difficult to assess its pollution load; 3. concentration of suspension is higher, and organic concentration is lower, and water quality is weakly alkaline; 4. the sanitary sewage quantity discharged wet season is bigger than the low water season, sooner or later bigger than the daytime; 5. most of samll cities and towns or rural area do not have network of drains.
Domestic samll cities and towns or the Rural areas domestic sewage treatment process that has built up operation is substantially at present: activated sludge process class, biomembrance process class, marsh gas purifying pond, artificial ecology method, operating performance is had nothing in common with each other.But all exist following shortcoming: investment target is higher, one-time investment is big, is unfavorable for the control and the saving of investing; Technical requirements height, complicated operation, incompatible with its level of economic development, peopleware and state of the art; Complex management, running cost height can not be brought into play due benefit.
Summary of the invention
For overcoming the defective of prior art, the present invention adopts facultative biochemistry-strengthened artificial wet land process program, wherein strengthened artificial wet land is meant that origin or beginning and end at traditional artificial swamp are equipped with oxygenate apparatus, is used to improve the restriction that the not enough and wetland treatment effect of dissolved oxygen in the wetland is subjected to seasonal variation.Combination process of the present invention can effectively improve the clearance of organism, ammonia nitrogen, total nitrogen and total phosphorus, adapts to little water quantity and quality, water yield variation characteristics greatly, and commissioning test is convenient, and management is simple, does not need special messenger's post.
Realize that the object of the invention sewage water treatment method concrete steps are as follows:
(1) facultative biochemistry treatment step
Sewage enters the facultative biochemistry reactor and carries out facultative biochemistry reaction, and this reactor does not need oxygen supply, only in inside agitator is set, and in reactor two sides triphase separator is set, and finishes the separating of a small amount of gas of facultative mud in the reaction, water outlet and generation.This step is the core of this combined process system, its major function is nitrate nitrogen and the nitrite nitrogen of removing the organic pollutant in the water inlet and refluxing and come by strengthened artificial wet land by the biochemical reaction of aerobic-anaerobic microbe under little oxygen, anoxic and anaerobic condition, and reduces SS, COD and BOD in the water inlet simultaneously.
(2) strengthened artificial wet land treatment step
It is between three functional zone that strengthened artificial wet land is divided into, wherein first district is provided with three of aeration tubes for pretreating zone in the bottom, and this aeration tube is the oxygenation pipe, do not open the water outlet effect of when water temperature reduces or intakes the Pollutant levels rising, opening the assurance wetland during usual the operation.Second is COD degraded district and dephosphorization district, dephosphorization fillers such as wet land filler is calcareous in this zone selection, scrap iron slag.The 3rd district is a nitrification zone, establishes three aeration tubes, under the oxygenation of aeration tube, continues to reduce COD, finishes the ammonia nitrogen nitrifying process in the sewage, and makes oxygen enrichment in the water outlet.
(3) reflow treatment step
Strengthened artificial wet land water outlet 50%-100% refluxes and enters the facultative biochemistry reactor, carries out denitrification denitrogenation.The dissolved oxygen that contains in the strengthened artificial wet land water outlet can keep the little oxygen environment in the facultative biochemistry reactor, and denitrifying bacteria is dominant bacteria in this reactor, the nitric efficiency height.
The present invention can effectively improve the clearance to organism, ammonia nitrogen, total nitrogen and total phosphorus in the sewage, and water outlet reaches first grade discharging A grade standard, convenient management, and working cost is low, is the technology that adapts to little water yield sewage disposals such as rural area.
Description of drawings
Fig. 1 is a process flow sheet of the present invention
Fig. 2 is a facultative biochemistry reactor synoptic diagram of the present invention
Fig. 3 is a strengthened artificial wet land synoptic diagram of the present invention.
Embodiment
Technical process of the present invention as shown in Figure 1, sewage enters facultative biochemistry reactor 1,1 water outlet of facultative biochemistry reactor enters strengthened artificial wet land 2, strengthened artificial wet land 2 local oxygenations.Strengthened artificial wet land 2 water outlet parts are back to amphimicrobian biochemical reactor 1, and a part directly effluxes, and promptly realizes sewage treatment process.
With reference to facultative biochemistry reactor synoptic diagram shown in Figure 2, sewage enters facultative biochemistry reactor 1, and agitator 11 plays mixed uniformly effect.Triphase separator 12 is made up of settling region, backflow seam and air seal set, and its function is with three phase separation such as gas, mud and sewage.Triphase separator is provided with mud backflow seam, and sedimentary mud refluxes.The facultative biochemistry reactor is under anaerobism, anoxybiotic condition, and denitrogenation can obtain effect preferably.Gas overflows into main reaction region after entering air chamber, and mud carries out sedimentation in the settling region, and is back to reaction zone through the seam that refluxes.Waste water after the precipitation clarification is discharged reactor as treating water, enters strengthened artificial wet land.
With reference to strengthened artificial wet land synoptic diagram shown in Figure 3, the water outlet of facultative biochemistry reactor enters strengthened artificial wet land 2.Strengthened artificial wet land is divided into three zones: pretreating zone 21, COD degraded district and dephosphorization district 22, nitrification zone 23.The pretreating zone bottom is provided with aeration tube 24, and COD degraded district and dephosphorization district do not establish aeration tube, and aeration tube 25 is established in the nitrification zone bottom.When water temperature reduces or intakes the Pollutant levels rising, open the aeration tube of pretreating zone, oxygenation.Sewage reaches the effect of degraded COD, nitrated and dephosphorization successively through pretreating zone, COD degraded district and dephosphorization district, nitrification zone.
Claims (4)
1. the sewage water treatment method based on facultative biochemistry-strengthened artificial wet land comprises the steps:
(1) facultative biochemistry treatment step
Treatment sewage at first enters the facultative biochemistry reactor and carries out facultative biochemistry reaction, finishes the separating of a small amount of gas of facultative mud, water outlet and generation, and the water outlet after the separation enters following step and continues to handle;
(2) strengthened artificial wet land treatment step
Water outlet after above-mentioned steps is handled flows into strengthened artificial wet land, this strengthened artificial wet land comprises between three functional zone, wherein first district is pretreating zone, its bottom is provided with many aeration tubes, this aeration tube is the oxygenation pipe, do not open during usual the operation, when water temperature reduces or intakes the Pollutant levels rising, open water outlet effect with the assurance wetland; Second district is COD degraded district and dephosphorization district, and the wet land filler in this district is the dephosphorization filler, and the sewage after above-mentioned first district handles carries out dephosphorization to be handled in this second district; The 3rd district is a nitrification zone, and its bottom also is provided with many aeration tubes, and under the oxygenation of aeration tube, the COD in the sewage after dephosphorization is handled is continued to reduce in the 3rd district, finishes the ammonia nitrogen nitrifying process in the sewage, and makes oxygen enrichment in the water outlet;
(3) reflow treatment step
Part in the strengthened artificial wet land water outlet refluxes and enters the facultative biochemistry reactor, carry out denitrification denitrogenation after, enter strengthened artificial wet land again and handle the back and discharge, sewage treatment process is finished in directly discharge of part in addition.
2. sewage water treatment method as claimed in claim 1 is characterized in that, the facultative biochemistry reactor in the described step (1) need not oxygen supply, and inside is provided with agitator, is provided with triphase separator in the reactor both sides.
3. as claim 1 or 2 sewage water treatment methods, it is characterized in that described triphase separator (12) comprises the settling region, reflux seam and air seal set, be used for the three phase separation of gas, mud and sewage.
4. as the described strengthened artificial wet land of one of claim 1-3, it is characterized in that the water outlet that enters the facultative biochemistry reactor that refluxes in the described step (3) accounts for the 50-100% of described strengthened artificial wet land water outlet.
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| CN2010105336345A CN101979348A (en) | 2010-11-08 | 2010-11-08 | Facultative biochemical-strengthened artificial wetland-based sewage treatment method |
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| CN2010105336345A CN101979348A (en) | 2010-11-08 | 2010-11-08 | Facultative biochemical-strengthened artificial wetland-based sewage treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049709A (en) * | 2023-10-10 | 2023-11-14 | 湖南易净环保科技有限公司 | Monitoring and diagnosis integrated linkage sewage treatment system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054237A (en) * | 2007-05-14 | 2007-10-17 | 华南农业大学 | Method of treating sewage by composite vertical down flow artificial wet field and treatment system thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054237A (en) * | 2007-05-14 | 2007-10-17 | 华南农业大学 | Method of treating sewage by composite vertical down flow artificial wet field and treatment system thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《中国博士学位论文全文数据库工程科技I辑》 20090515 任拥政 兼性生化-局部充氧波形潜流人工湿地处理分散污水工艺研究 , 第5期 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049709A (en) * | 2023-10-10 | 2023-11-14 | 湖南易净环保科技有限公司 | Monitoring and diagnosis integrated linkage sewage treatment system and method |
| CN117049709B (en) * | 2023-10-10 | 2023-12-26 | 湖南易净环保科技有限公司 | Monitoring and diagnosis integrated linkage sewage treatment system and method |
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Application publication date: 20110223 |