CN109368787A - A kind of country sewage biological-ecological coupled processing method of high standard emission request - Google Patents
A kind of country sewage biological-ecological coupled processing method of high standard emission request Download PDFInfo
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- CN109368787A CN109368787A CN201811352563.1A CN201811352563A CN109368787A CN 109368787 A CN109368787 A CN 109368787A CN 201811352563 A CN201811352563 A CN 201811352563A CN 109368787 A CN109368787 A CN 109368787A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a kind of country sewage biological-ecological coupled processing methods of high standard emission request, belong to water-treatment technology field.The present invention handles domestic sewage in rural areas using a kind of " buried packing type AO (anaerobic-aerobic) integration apparatus+drowned flow artificial wet land+ecological canal " biological-ecological coupling technique, and B8 microbial inoculum is added into ecological canal and is improved to total nitrogen, the removal efficiency of total phosphorus, to reach " TAI HU AREA urban wastewater treatment firm and the main Sewage Water Emissions limit value of priority industry industry " (DB32/1072-2017) (Taihu Lake basin one, discharge of major pollutant limit value is COD≤40 in second protection zone, ammonia nitrogen≤3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).This biological and ecological coupling sewage disposal technology provided by the invention has many advantages, such as that small investment, operating cost are low, denitrogenation dephosphorizing is high-efficient, can meet the requirement of the other rural area sewage treatments of Taihu Lake basin or the whole nation.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of country sewage biology-of high standard emission request
Ecologic coupling processing method.
Background technique
With the development of economy, the production of Taihu Lake basin rural area changes with life style, this makes rural area raw
Running water matter also varies widely, and the pollutant concentrations such as COD, ammonia nitrogen, total nitrogen, total phosphorus are higher and fluctuation is larger.Existing tradition
Urban sewage treatment process (such as A/O, SBR, biofilter and biological rotating disk) is extremely difficult to " TAI HU AREA urban wastewater treatment
Factory and the main Sewage Water Emissions limit value of priority industry industry " (DB32/1072-2017) (in Taihu Lake basin I and II protection zone
Discharge of major pollutant limit value is COD≤40, ammonia nitrogen≤3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).These techniques
Processing cost is higher, and operation and maintenance are difficult, and rural area sewage treatment does not have the system of collection process expense in addition, is all by place
Government provides funds, and sewage treatment realizes that qualified discharge and effectively management are even more to be not easy.High standard emission request is now faced, cost is bound to
It can be higher.Since rural area land resource is more sufficient and cheap, this technique on the basis of urban sewage treatment process (such as
AO technique), it constructs artificial swamp and existing river and channel carries out ecological method processing, to reach inexpensive maximum discharge requirement.
Summary of the invention
The purpose of the present invention is: the present invention for the discharge of Taihu Lake basin high standard " TAI HU AREA urban wastewater treatment firm and
The main Sewage Water Emissions limit value of priority industry industry " (DB32/1072-2017), single rural domestic sewage treatment process
(such as A/O, SBR, biofilter and biological rotating disk) is extremely difficult to this problem of Taihu Lake basin high standard emission request, the present invention
It proposes a kind of buried packing type AO (anaerobic-aerobic) integration apparatus+drowned flow artificial wet land+ecological canal group technology, is used for
Domestic sewage in rural areas is handled, and adds denitrification phosphorus-collecting dry bacteria B8 to ecological canal, to improve ecological canal to sewage
Treatment effect meets Taihu Lake basin emission request.
The technical solution adopted by the invention is as follows:
A kind of country sewage biological-ecological coupled processing method of high standard emission request carries out as steps described below:
(1) building of AO (anaerobic-aerobic) integration apparatus selects different structures, water flow according to the difference of water
(it is less than 100t/d) when smaller, steel construction integration can be used, (is greater than 100t/d) when water flow is larger, uses brickwork construction one
Body.(anoxic) pond A uses soft-filler, and (aerobic) pond O uses semi soft packing, and installation volume is respectively 55% He in pond
45%.
(2) artificial swamp is built using matrix fills such as steel slag, old house breaking brickbat and riverway sludges.Wetland pond
Bottom is successively laid with the steel slag brickbat of the high-throughput wetland barrier film of one layer of HDPE (high density polyethylene (HDPE)), 700mm thickness from bottom to top
Bed course and 300mm activity ceramic grain filter are laid with one layer of efficient water purification film on active ceramic grain filter surface, are then laid with the river 400mm
Road mud and mellow soil composite soil finally plant green vegetation in earth surfaces.
(3) ecological canal construction method is in the trench 2m at interval of 15m setting radius, area 6.2m2Semicircle
Ecological enclosure, the different heavy, emergent aquactic plant of the interior plantation of enclosure, such as reed, canna and thaliadeabata, planting density planting density
For 8-15 bud/m2.According to 2.50g/m2Amount uniformly added into irrigation canals and ditches viable count be 109The denitrification phosphorus-collecting dry bacteria of/g
B8。
Cardinal principle of the invention is:
(1) processing of packing type AO (anaerobic-aerobic) integration apparatus mainly for COD, ammoniacal nitrogen in sewage.Filler
The pond type AO is more advantageous to microorganism attachment, increases microorganism in the residence time of processing unit, and then strengthen to organic pollutant
Degradation.In anaerobism section heterotroph by suspended contaminants and dissolved organic matters such as starch, fiber, carbohydrate in sewage
It is hydrolyzed to organic acid, larger molecular organics is made to be decomposed into small organic molecule, insoluble organic matter is converted to soluble organic
Object improves the biodegradability of sewage, during anaerobic bio-treated shown in the conversion of organic matter such as formula (1), formula (2).When this
When the product through anaerobic hydrolysis enters aerobic tank progress Aerobic Process for Treatment a bit, under sufficient oxygen supply condition, the nitrification of autotrophic bacterium
It willIt is oxidized toWithNet reaction is shown in formula (3).By flowing back, control is back to the pond A, under anoxic conditions, different oxygen
The denitrification of bacterium willIt is reduced to molecular nitrogen (N2).Nitrate reduction is that the process of nitrogen is shown in formula (4).
(2) its nitrogen and phosphorus pollution is further removed by the effects of Wetland Substrate absorption, plant absorption and biodegradation
Object and organic matter.Artificial swamp has preferable removal effect to phosphorus, and, mainly by Wetland Substrate suction-operated, of the invention is artificial for this
The steel slag that wetland uses is rich in Al3+、Fe3+、Ca2+, and it is used cooperatively with building common brick fragment, there is preferable absorption to phosphorus
Effect.
(3) ecological canal further removes the organic matter and nitrogen of sewage by illumination, plant absorption and biodegradation
Phosphor contaminant, and be conducive to increase rhizosphere microbial amount so as to improve to total phosphorus using very water+heavy water plantation mode
Removal effect.Denitrification phosphorus-collecting dry bacteria B8 is added, it can be made to breed in irrigation canals and ditches, strengthening biological carbon and phosphorous removal efficiency.
Main advantages of the present invention:
(1) present invention adds floating stuffing in AO (anaerobic-aerobic), and compared with traditional AO technique, material is filled out in suspension
The biomembrane and activated sludge collective effect of attachment improve Nitrogen/Phosphorus Removal.
(2) ecological canal is built into existing rural area river, the dynamic plant of the aquatic property of bacterium colony-biomembrane-is formed based on illumination
Object biological-ecological coupled system strengthens nitrogen phosphorus ligands.Can not only beautify ecological environment can with deeply treating wastewater, and
Treated, and sewage can be utilized for the purposes such as villager's wash vegetables, field irrigation.
(3) present invention uses biological-ecological coupling technique, dirty using the biological means such as water plant and medicament purification rural area
Water greatly reduces cost.Hydraulic detention time is longer, and sewage can be handled adequately.
Detailed description of the invention
Fig. 1 is process flow chart of the invention, includes in figure: 1 conditioning tank, 2 packing type AO (anaerobic-aerobic) ponds, 3 undercurrent people
Work wetland, 4 ecological canals；
Fig. 2 is floor plan of the present invention, includes in figure: 1, transition pair staple shaft 2, conditioning tank 3, inspection shaft composite decking 4, detest
Oxygen pond 5, aerobic tank 6, sedimentation basin 7, disinfection discharge pond 8, sludge-tank 9, wetland enter water inspection shaft 10, underflow type artificial wet land 11, go out
Water inspection shaft 12, ecological canal.
Specific embodiment
The building of AO (anaerobic-aerobic) integration apparatus selects different structures according to the difference of water, water flow compared with
Hour (is less than 100t/d), and steel construction integration can be used, and (is greater than 100t/d) when water flow is larger, uses brickwork construction integrated
Change.It is thick that wetland bottom of pond is successively laid with the high-throughput wetland barrier film of one layer of HDPE (high density polyethylene (HDPE)), 700mm from bottom to top
Steel slag broken brick hardcore and 300mm activity ceramic grain filter are laid with one layer of efficient water purification film on active ceramic grain filter surface, are then laid with
400mm riverway sludge and mellow soil composite soil finally plant green vegetation in earth surfaces.Ecological canal construction method, in irrigation canals and ditches
In at interval of 15m setting radius be 2m, area 6.2m2The ecological enclosure of semicircle, plantation different heavy, very water are planted in enclosure
Object, such as reed, canna and thaliadeabata, planting density planting density are 8-15 bud/m2.According to 2.50g/m2Amount to irrigation canals and ditches
In uniformly add viable count be 109(Denitrifying Phosphate Accumulating Organisms B8 of the invention is that stench is false to the denitrification phosphorus-collecting dry bacteria B8 of/g
Monad (Pseudomonas putida), is screened by this seminar, preparation method see application No. is
The patent of CN201410472759.X, CN201410476644.8 and Chen Jing etc. 2017 at periodical " Environmental Chemistry " volume 36
The paper " preparation and application of Denitrifying Phosphate Accumulating Organisms B8 dry bacteria " delivered on 5 phases page 1148~1155.
Domestic sewage in rural areas is introduced into conditioning tank 2 by the double staple shafts 1 of transition, passes sequentially through anaerobic pond 4, aerobic tank 5 sinks
Shallow lake pond 8, disinfection discharge pond 7, then it is passed through undercurrent type wetland 10, it finally enters ecological canal 12 and carries out ecological consumption processing.In life
Sewage after the acquisition process of state irrigation canals and ditches end, surveys the indexs such as its COD, ammonia nitrogen, total nitrogen, total phosphorus.It is raw using this process rural area
Sewage living, COD are reduced to 13.2-18.7mg/L, NH from 180-320mg/L3- N is reduced to 0.45- from 25.8-38.8mg/L
1.4mg/L, TN are reduced to 2.83-4.5mg/L from 37.3-45.8mg/L, and TP is reduced to 0.12-0.19mg/ from 2.6-3.5mg/L
L。
5 embodiments presented below further illustrate the present invention.Embodiment is limited for illustrating the content of present invention
The content of present invention.
Example 1
(1) buried packing type AO (anaerobic-aerobic) integration+drowned flow artificial wet land+ecological canal process rural area
Sanitary sewage flow is 24m3/ d, using length L1=3.50m, width W1=1.80m collecting-tank 2；AO integrated pond length L2
=5.85m, width W2=1.8m are that 2:3 is constructed according to the volume ratio of anaerobic pond and aerobic tank.Length L3=1.20m, it is wide
Spend W3=0.90m sedimentation basin 6；Length L4=1.20m, width W4=0.90m disinfection discharge pond 7；Length L5=1.20m, width
W5=1.80m sludge-tank 8, all pond body height H are 2.50m.The part AO hydraulic detention time (HRT) is about 1.35d.
(2) length L6=8.48m, width W6=7.48m, height h=1.40m undercurrent type wetland, when hydraulic retention are used
Between be 2.65d, wetland bottom of pond be successively laid with from bottom to top the high-throughput wetland barrier film of one layer of HDPE (high density polyethylene (HDPE)),
The steel slag broken brick hardcore and 300mm activity ceramic grain filter of 700mm thickness are laid with one layer of efficient water purification on active ceramic grain filter surface
Film is then laid with 400mm riverway sludge and mellow soil composite soil, finally plants green vegetation in earth surfaces.
(3) the length L7=50m of ecological canal, mean breadth W7=2.5m, mean depth h=1.5m, when hydraulic retention
Between about 8d.It is in the trench 2m at interval of 15m setting radius, area 6.2m2The ecological enclosure of semicircle, plantation in enclosure
Different emergent aquactic plants and submerged plant, such as reed, canna and thaliadeabata, planting density planting density are 8-15 bud/m2。
According to 2.50g/m2Amount uniformly added into irrigation canals and ditches viable count be 109The denitrification phosphorus-collecting dry bacteria B8 of/g.
Effluent quality reaches standard " TAI HU AREA urban wastewater treatment firm and the main Sewage Water Emissions of priority industry industry
Limit value " (DB32/1072-2017) (discharge of major pollutant limit value is COD≤40, ammonia nitrogen in Taihu Lake basin I and II protection zone
≤ 3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).
Example 2
(1) buried packing type AO integration+drowned flow artificial wet land+ecological canal process domestic sewage in rural areas flow
For 48m3/ d, using length L1=6.80m, width W1=3.30m collecting-tank 2；AO integrated pond length L2=7.50m, W2=
2.80m is that 2:3 is constructed according to the volume ratio of anaerobic pond and aerobic tank.Length L3=1.80m, width W3=1.40m precipitating
Pond 6；Length L3=1.80m, width W3=1.40m disinfection discharge pond 7；Length L5=1.80m, width W5=2.80m sludge-tank
8, all pond body height H are 2.50m.The part AO hydraulic detention time (HRT) is about 1.50d.
(2) length L6=10.48m, width W6=8.48m, height h=1.40m undercurrent type wetland, when hydraulic retention are used
Between be 2.60d.Wetland construction method is same as above.
(3) the length L7=100m of ecological canal, mean breadth W7=2.5m, mean depth h=1.5, when hydraulic retention
Between about 8d.Ecological canal construction method is same as above.
Effluent quality reaches standard " TAI HU AREA urban wastewater treatment firm and the main Sewage Water Emissions of priority industry industry
Limit value " (DB32/1072-2017) (discharge of major pollutant limit value is COD≤40, ammonia nitrogen in Taihu Lake basin I and II protection zone
≤ 3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).
Example 3
(1) buried packing type AO integration+drowned flow artificial wet land+ecological canal process domestic sewage in rural areas flow
For 96m3/ d, using length L1=10.00m, width W1=4.00m collecting-tank 2；AO integrated pond length L2=10.50m, W2
=6.00m is that 2:3 is constructed according to the volume ratio of anaerobic pond and aerobic tank.Length L3=4.00m, width W3=3.00m are heavy
Shallow lake pond 6；Length L3=4.00m, width W3=3.00m disinfection discharge pond 7；Length L5=4.00m, width W5=6.00m sludge
Pond 8, all pond body height H are 2.50m.The part AO hydraulic detention time (HRT) is about 1.65d.
(2) length L6=14.00m, width W6=9.48m, height h=1.40m undercurrent type wetland, when hydraulic retention are used
Between be 1.95d.Wetland construction method is same as above.
(3) the length L7=150m of ecological canal, mean breadth W7=2.5m, mean depth h=1.5, when hydraulic retention
Between about 8d.Ecological canal construction method is same as above.
Effluent quality reaches standard " TAI HU AREA urban wastewater treatment firm and the main Sewage Water Emissions of priority industry industry
Limit value " (DB32/1072-2017) (discharge of major pollutant limit value is COD≤40, ammonia nitrogen in Taihu Lake basin I and II protection zone
≤ 3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).
Example 4
(1) buried packing type AO integration apparatus+drowned flow artificial wet land+ecological canal process domestic sewage in rural areas
Flow is 144m3/ d, using length L1=12.00m, width W1=4.50m collecting-tank 2；AO integrated pond length L2=
13.50m, W2=8.00m are that 2:3 carries out brick construction according to the volume ratio of anaerobic pond and aerobic tank.Length L3=5.00m, it is wide
Spend W3=4.00m sedimentation basin 6；Length L3=5.00m, width W3=4.00m disinfection discharge pond 7；Length L5=5.00m, width
W5=7.50m sludge-tank 8, all pond body height H are 2.50m.The part AO hydraulic detention time (HRT) is about 2.00d.
(2) length L6=17.80m, width W6=10.8m, height h=1.40m undercurrent type wetland, when hydraulic retention are used
Between be 1.85d.Wetland construction method is same as above.
(3) the length L7=200m of ecological canal, mean breadth W7=2.5m, mean depth h=1.5m, when hydraulic retention
Between about 8d.Ecological canal construction method is same as above.
Effluent quality reaches standard " TAI HU AREA urban wastewater treatment firm and the main Sewage Water Emissions of priority industry industry
Limit value " (DB32/1072-2017) (discharge of major pollutant limit value is COD≤40, ammonia nitrogen in Taihu Lake basin I and II protection zone
≤ 3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).
Example 5
(1) buried packing type AO integration apparatus+drowned flow artificial wet land+ecological canal process domestic sewage in rural areas
Flow is 192m3/ d, using length L1=14.00m, width W1=5.80m collecting-tank 2；AO integrated pond length L2=
15.50m, W2=9.00m are that 2:3 carries out brick construction according to the volume ratio of anaerobic pond and aerobic tank.Length L3=6.50m, it is wide
Spend W3=4.50m sedimentation basin 6；Length L3=6.50m, width W3=4.50m disinfection discharge pond 7；Length L5=6.50m, width
W5=8.50m sludge-tank 8, all pond body height H are 2.50m.The part AO hydraulic detention time (HRT) is about 1.85d.
(2) length L6=18.50m, width W6=14.8m, height h=1.40m undercurrent type wetland, when hydraulic retention are used
Between be 2d.Wetland construction method is same as above.
(3) the length L7=250m of ecological canal, mean breadth W7=2.5m, mean depth h=1.5, when hydraulic retention
Between about 8d.Ecological canal construction method is same as above.
Effluent quality reaches standard " TAI HU AREA urban wastewater treatment firm and the main Sewage Water Emissions of priority industry industry
Limit value " (DB32/1072-2017) (discharge of major pollutant limit value is COD≤40, ammonia nitrogen in Taihu Lake basin I and II protection zone
≤ 3 (5), total nitrogen≤10 (12), total phosphorus≤0.3, mg/L).
Claims (1)
1. a kind of country sewage biological-ecological coupled processing method of high standard emission request, it is characterised in that according to following steps
It is rapid to carry out:
(1) building of AO (anoxic pond-aerobic tank) integration apparatus selects different structures, water flow according to the difference of water
(it is less than 100t/d) when smaller, steel construction integration can be used, (is greater than 100t/d) when water flow is larger, uses brickwork construction one
Body；(anoxic) pond A uses soft-filler, and (aerobic) pond O uses semi soft packing, and installation volume is respectively 55% He in pond
45%；
(2) artificial swamp is built using matrix fills such as steel slag, old house breaking brickbat and riverway sludges；Wetland bottom of pond is certainly
The steel slag broken brick hardcore of the high-throughput wetland barrier film of one layer of HDPE (high density polyethylene (HDPE)), 700mm thickness is successively laid on down
With 300mm activity ceramic grain filter, it is laid with one layer of efficient water purification film on active ceramic grain filter surface, the river 400mm is then laid with and becomes silted up
Mud and mellow soil composite soil finally plant green vegetation in earth surfaces；
(3) ecological canal construction method is in the trench 2m at interval of 15m setting radius, area 6.2m2Semicircle ecology
Enclosure, the different heavy, emergent aquactic plant of the interior plantation of enclosure, such as reed, canna and thaliadeabata, planting density planting density are 8-
15 buds/m2；According to 2.50g/m2Amount uniformly added into irrigation canals and ditches viable count be 109The denitrification phosphorus-collecting dry bacteria B8 of/g.
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| CN201811352563.1A CN109368787A (en) | 2018-11-14 | 2018-11-14 | A kind of country sewage biological-ecological coupled processing method of high standard emission request |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112093900A (en) * | 2020-08-28 | 2020-12-18 | 中国冶金科工股份有限公司 | Lake exogenous sewage purification system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244894A (en) * | 1998-02-27 | 1999-09-14 | Mitsubishi Electric Corp | Biological nitrogen removing apparatus |
| CN105417699A (en) * | 2015-11-25 | 2016-03-23 | 常州大学 | Vertical flow artificial wetland ecological degradation method for tail water of urban sewage treatment plant |
| CN107176756A (en) * | 2017-06-09 | 2017-09-19 | 常州大学 | It is a kind of to be dissolved method processing villages and small towns wastewater treatment facility method of construction without refluxing multi-stage AO+ ecologies |
| CN206580701U (en) * | 2017-01-23 | 2017-10-24 | 浙江裕腾百诺环保科技有限公司 | A kind of river course point-source pollution processing unit |
-
2018
- 2018-11-14 CN CN201811352563.1A patent/CN109368787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244894A (en) * | 1998-02-27 | 1999-09-14 | Mitsubishi Electric Corp | Biological nitrogen removing apparatus |
| CN105417699A (en) * | 2015-11-25 | 2016-03-23 | 常州大学 | Vertical flow artificial wetland ecological degradation method for tail water of urban sewage treatment plant |
| CN206580701U (en) * | 2017-01-23 | 2017-10-24 | 浙江裕腾百诺环保科技有限公司 | A kind of river course point-source pollution processing unit |
| CN107176756A (en) * | 2017-06-09 | 2017-09-19 | 常州大学 | It is a kind of to be dissolved method processing villages and small towns wastewater treatment facility method of construction without refluxing multi-stage AO+ ecologies |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112093900A (en) * | 2020-08-28 | 2020-12-18 | 中国冶金科工股份有限公司 | Lake exogenous sewage purification system |
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Application publication date: 20190222 |