CN102491535A - Method using sulfate-reducing bacteria for demineralization of lakes and rivers - Google Patents
Method using sulfate-reducing bacteria for demineralization of lakes and rivers Download PDFInfo
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- CN102491535A CN102491535A CN2011104206245A CN201110420624A CN102491535A CN 102491535 A CN102491535 A CN 102491535A CN 2011104206245 A CN2011104206245 A CN 2011104206245A CN 201110420624 A CN201110420624 A CN 201110420624A CN 102491535 A CN102491535 A CN 102491535A
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- 241000894006 Bacteria Species 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000005115 demineralization Methods 0.000 title abstract 3
- 230000002328 demineralizing effect Effects 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 157
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 80
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 73
- 238000007596 consolidation process Methods 0.000 claims description 53
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- 238000012258 culturing Methods 0.000 claims description 6
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- 238000000926 separation method Methods 0.000 claims description 6
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 239000001963 growth medium Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 15
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- 241000251468 Actinopterygii Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 230000004071 biological effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
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- 229910052742 iron Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to a method for demineralization of lakes and rivers, and discloses a method using sulfate-reducing bacteria for demineralization of lakes and rivers, which includes: step one, setting up of a water self-purification reinforcing system; step two, enrichment culture of sulfate reducing bacteria on culture medium; and step three, throwing, domesticating and fixing of the sulfate reducing bacteria. The method using the water self-purification reinforcing system in an A/O (anoxic-oxic) operating way can effectively reduce concentration of pollutants of sulfate radicals, organics, ammonia nitrogen and the like in water and reduce acidity of water.
Description
Technical field
The present invention relates to a kind of method of removing the lake inlet water salinity, specially refer to the self consolidation system that adopts the A/O operation scheme, utilize sulphate reducing bacteria to remove the method for lake inlet water salinity.
Background technology
Known domestic a lot of industries; Like electric power, refining of petroleum, non-ferrous metal metallurgy, sulfuric acid preparation, chemical fibre production and industries such as coking, light industry, food fermentation and pharmaceutical industry, all can bring a large amount of waste water that is rich in vitriol or sulfide, these trade effluents that contain vitriol enter water bodys such as river course and lake; If effectively do not handle; The dissolved oxygen of the water body that contains vitriol in will large-area consumption water body in secular anaerobic environment, and reduce the pH value of water body, generation potential corrodibility; Destroy soil and low mud structure, the food chain and the ecotope in waters caused severe impairment.
In phreatic monitoring; Sulphate content in the underground water of NORTHWEST CHINA some areas is all high; The content of vitriol even surpass 1000mg/L in the underground water of partial area, the at present domestic annual salinity that partial rivers and water body in lake are arranged all can have a negative impact to domestic water, process water and field irrigation above 3g/L; To the high river of salinity or the use of water body in lake; Except adopting conventional water technology or measure, all must adopt special desalination process just can make effluent quality reach request for utilization in addition to salinity higher in the water body or saltiness, also just be equivalent to strengthen the running cost of former water treatment.In addition; The raising of salinity in the water body; Be equivalent to improve salinity of water, and the lifting of salinity will be carried out the flexibility differentiation to the biology in the water body, accelerate the diversified reduction of biotic population in the water body; And the quick unfavorable phenomenon such as increases of water body bed mud thickness, so effective removal of water body salinity seemed quite urgent.The salinity of present many water body in lake raises; The existing salinity of the huge water body of storage capacity is carried out maturation and reduction effectively; Still need and improve many ins and outs, therefore, adopt the salinity in the practical water bodys such as technical finesse ingoing river just to seem extremely important.
To the processing of sulfur-bearing hydrochlorate waste water or river water body,, generally all to rivers road water body be carried out outer drawing if adopt traditional physical chemistry doctor treatment; Introduce the power-actuated water treatment device of need that the bank is set up or placed; Add pharmaceutical chemicals, realize quick sulphur removal, outside sulfur removal effectiveness is higher water body; Then generally all to have an energy consumption height, processing costs expensive for these desulfurization process or device, and the defective that is difficult to overcome such as sludge disposal difficulty.
The main body of biological desulphurization is a sulphate reducing bacteria; Like desulphovibrio bacteriums such as (Desulfovibrio desulfuricans), be low price sulphur with sulfate reduction, generally all be it is directly thrown in river course or water body in lake that needs are handled; Perhaps sulphate reducing bacteria is adhered to and be fixed on the inert media that drops in the water body; Under anaerobism or double oxygen condition, these characteristic deterioration floras can vitriol hydrogen acceptor during as organic oxidation, be S with the sulfur reduction in the vitriol
2-, and under aerobic conditions, S
2-Can further be converted into elemental sulfur and from water body, separate out.Representational chemical conversion formula is following:
2CH
3CH (OH) COO
-+ SO
4 2-→ 2CH
3COO
-+ S
2-+ 2CO
2+ 2H
2O (is culture medium with lactic acid)
Employed sulphate reducing bacteria in the engineering test; Generally can from the water body bed mud of sulfur-bearing hydrochlorate contaminated wastewater, sample; Therefrom cultivate and isolate the sulphate reducing bacteria of sulfide of to degrade; These bacteriums at present can be in the culture environment of pure bacterium or mixed bacterial, realizes effective degraded and removal to vitriol in the water body, utilizes the biological process of sulphate reducing bacteria sulphur removal all to have advantages such as the few and running cost of sludge yield is low.
Therefore; If employing adds sulphate reducing bacteria, immobilization sulphate reducing bacteria or river water body is caused fixedly sulphate reducing bacteria biochemical process equipment outward to the stream entering lake water body; Remove the salinities such as vitriol in the water body; Compare conventional materialization treatment process, will have all generally that cost is low, technology succinct, remove advantages such as efficient height and sludge yield are little.There has been employing in water body, to add methods such as tourmalinite and iron filings at present and improved the bioactive method of sulphate reducing bacteria; Like one Chinese patent application numbers 200710072766.0; Authorize publication number CN100558657C; A kind of method that improves sulphate reducing bacteria of this invention makes the sulphate reducing bacteria dramatic growth in the water body through adding tourmalinite and ferrous salt in the handled water body of sulphate reducing bacteria, has improved the activity 8%～20% of sulphate reducing bacteria, has improved wastewater treatment efficiency.The weak point of this invention is, adds the thing part and will change in the bed mud of water body, and increase the running cost of biochemical sulphur removal measure.
If directly in water body, add sulphate reducing bacteria or filler immobilization sulphate reducing bacteria; Though operation is simple; But flexibility and the degradation efficiency of bacterial classification in water body all will be bigger because of fluctuateed by Effect of Environmental, and the water body sulfur limitation effect is difficult to gather imitate and control; And if river water body is caused fixedly treatment facility of bank outward, though treatment effect is stable, will bring bigger floor space and higher water treatment cost of investment.This shows, adopt in water body, directly to add with the immobilized sulphate reducing bacteria of filling surface, carry out the water body sulphur removal, performance running cost is hanged down and the advantage that operation is simple, this type invention has very strong actual application value.
Filling surface adheres to immobilized sulphate reducing bacteria; If add in the fixed biochemical reaction device; Stable phase to the constant environmental parameter under, fluctuate up and down at 25 ° of C like temperature, avoid low temperature and hot environment; Perhaps avoid temperature fluctuation range bigger, general all can bring into play its biological degradation activity constantly.But in low temperature freezes environment; Filler is under the situation of freezing; The immobilized microorganism of filling surface is at 0 ° below the C; Lost the biologically active that continues sulphate reducing mostly basically; Therefore; Immobilized biochemical desulfurizing device all can not continue stable operation mostly in the winter time, stays cool basically; And go up in the reparation of spring and summer temperature; The requirement of suitable microorganism normal growth of water temperature and metabolism; Basically can guarantee that biochemical device can normally move, need hang the problem that many needs such as film and startup difficulty overcome again but reaction unit often is faced with filler again.If the main body biochemical reactor is adopted the insulation measure, at cold district, often need consume the more energy, like electric power, water vapour or coal, to a great extent, all will strengthen the running cost of biochemical reaction device.
Summary of the invention
The technical problem that invention will solve
To the following problem of prior art: adopt traditional physical chemistry doctor treatment to remove pollutant such as sulfate in the river of seasonal low temperature, arid and freezed in winter, the water body in lake in middle existence; There is high, the expensive problem of disposal cost of energy consumption, and the defective that is difficult to overcome such as sludge treatment difficulty; Directly in water body, add sulfate reducing bacteria or filler immobilization sulfate reducing bacteria; Adaptability and the degradation efficiency of bacterial classification in water body all will be bigger because of fluctuateed by Effect of Environmental; The water body sulfur limitation effect is difficult to gather imitate and control; The invention provides a kind of method of utilizing sulfate reducing bacteria to remove the lake inlet water salinity; Adopt the self-purification of water consolidation system of the A/O method of operation; Can effectively reduce the concentration of the pollutants such as sulfate radical, organic matter and ammonia nitrogen in the water body, and reduce the acidity of water body.
Technical scheme
The principle of invention: enrichment and amplification culture sulphate reducing bacteria on substratum are added to then in the self consolidation system and tame and immobilization, salinity in the sulphate reducing bacteria removal water body of dependence enrichment and other pollutent.
More than technical purpose of the present invention realize through following technical scheme:
A kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity, its step is:
1) make up the self consolidation system: on the river course, make up the self consolidation system along the river flow direction, it comprises two reaction zones, is respectively aerobic area and aerobic zone, and wherein aerobic area adopts enclosed construction, no whipping device; Aerobic zone then adopts unenclosed construction, and the bottom is provided with microporous aeration device, and microporous aeration device provides power through solar energy equipment; The reactor material of whole self consolidation system is selected the oilcloth of band anchor for use or is used reinforced concrete wall; To inside and outside the self-cleaning consolidation system and the water body between aerobic area and the aerobic zone to carry out service area separated; Wherein, The aerobic area water level is higher than the about 5～30cm of aerobic zone water level, and the current between aerobic area and the aerobic zone adopt top gravity overflow; Arrange fixing artificial pasture and water in aerobic area and the aerobic zone; The artificial pasture and water of self consolidation system in the described step 1), buoy is fixed in the upper end, and the lower end does not have fixing, floats with current, and buoy is fixed on the underframe in riverbed.
2) enrichment culture sulphate reducing bacteria on substratum;
Described step 2) sulphate reducing bacteria in separates the bed mud at self-contained vitriol water body place; Sulphate reducing bacteria is cultivated, and concrete separation and culturing process are:
A) in the 1L substratum, staple: NH
4Cl 1.0-1.2g, K
2HPO
40.5-0.8g, Mg
2SO
47H2O 2.0-2.3g, Na
2SO
40.5-0.8g, CaCl
20.1-0.3g, (NH4)
3SO
40.1-0.3g, C
3H
5O
3Na 0.1-0.3g;
B) picking 0.1～1ml mud is loaded in the Erlenmeyer flask that contains substratum 500-600m l, seals and tightens with bungee with plastics film, and through 6-8 days cultivation, the upper strata nutrient solution became thick black by oyster white;
C) get 100 ml-150ml nutrient solutions; Pack in the 250ml Erlenmeyer flask 110 ℃-120 ℃ high pressure steam sterilization 15-25 minute, in the aseptic technique environment, again from step B) move into the first culture bacteria liquid of 10ml to this step through the nutrient solution of high pressure steam sterilization; Seal with plastics film; Put in 25 ℃ of-30 ℃ of thermostat containers and cultivate, so add rich the cultivation 3-4 time, finally obtain the sulphate reducing bacteria of enrichment culture.
3) add, domestication and immobilization sulphate reducing bacteria: the sulphate reducing bacteria of cultivating is added to the aerobic area of self consolidation system according to 103-104/ml, the artificial pasture and water of aerobic area is hung film, hang film time span 4-6 week; The artificial pasture and water of aerobic zone are then adopted the river natural membrane, hang the film time span 15-30 days.
When the river was static, artificial pasture and water were in plumbness, and when water flows was arranged, artificial pasture and water class was waved thereupon.These type media that float are erected in the middle of the water, contact with river as natural pasture and water are the same, and water level is the drift shape when reducing, be vertical configuration during the water level rising; During freezed in winter; The top of artificial pasture and water is in stationary state; End portion still can wave with current; Or be in active state, have the mikrobe that fish peck at and adhere on the medium in the place of the depth of water, and self consolidation system itself also can be multiplied symbiotic place as various hydrobionts such as fish.According to the anaerobic reduction of vitriol degradation bacteria, and S
2-The characteristic that needs oxidation from water body, to remove, this self consolidation system adopts different extension membrane process, takes the process program of partition running.
Beneficial effect
Than prior art, a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention has following beneficial effect:
(1) the artificial pasture and water class in the self consolidation system all is in the state that waves that suspends at spring and summer, and biological activity is in preferable states, and is better to the removal effect of pollutents such as vitriol in the river;
(2) adopt special extension membrane process and partition running technology, in processes such as low temperature and water body be icing, still can realize to the salinity in the water body especially effective removal of vitriol;
(3) comprise aerobic area in the self consolidation system, the vitriol degradation bacteria in aerobic area generation reduction reaction;
(4) comprise aerobic zone in the self consolidation system, make the biomembranous biota on the artificial pasture and water be in the wide spectrum state, other pollutents such as the organism in the water body, ammonia nitrogen are also had removal effect preferably;
(5) raise and do not have under the ice situation at temperature; This self consolidation system can still can recover active rapidly and begin normal operation; Because biomembranous continuous growth and coming off on the filler, with a spot of biological sludge that produces, these biological sludges can get into hydrobiological food chain subsequently;
(6) utilize the immobilization role of artificial pasture and water, adhere to and the enrichment sulphate reducing bacteria, improve the ability that its anti-water body runs off, and keep suitable biological activity sulphate reducing bacteria.
Figure of description
Fig. 1 is the structural representation of artificial self-cleaning consolidation system of the present invention.
Among the figure: 1-lake inlet water; The 2-aerobic area; The artificial pasture and water of 3-; The 4-aerobic zone; River after 5-handles; The 6-microporous aeration device; The 7-solar energy equipment.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further introduction.
In conjunction with the structural representation of the artificial self-cleaning consolidation system of Fig. 1, a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity, its step is:
1) make up the self consolidation system: on the river course, make up the self consolidation system along the river flow direction, it comprises two reaction zones, is respectively aerobic area 2 and aerobic zone 4, and wherein aerobic area 2 adopts enclosed construction, no whipping device; Aerobic zone then adopts unenclosed construction, and the bottom is provided with microporous aeration device 6, and microporous aeration device 6 provides power through solar energy equipment 7; The reactor material of whole self consolidation system is selected the oilcloth of band anchor for use or is used reinforced concrete wall; To inside and outside the self-cleaning consolidation system and the water body between aerobic area 2 and the aerobic zone 4 to carry out service area separated; Wherein, Aerobic area 2 water levels are higher than the about 5～30cm of aerobic zone 4 water levels, and the current between aerobic area 2 and the aerobic zone 4 adopt top gravity overflow; Aerobic area 2 is fixed artificial pasture and water 3 with aerobic zone 4 interior layouts; The artificial pasture and water 3 of self consolidation system in the described step 1), buoy is fixed in the upper end, and the lower end does not have fixing, floats with current, and buoy is fixed on the underframe in riverbed.
2) enrichment culture sulphate reducing bacteria on substratum;
Described step 2) sulphate reducing bacteria in separates the bed mud at self-contained vitriol water body place; Sulphate reducing bacteria is cultivated, and concrete separation and culturing process are:
A) in the 1L substratum, staple: NH
4Cl 1.0-1.2g, K
2HPO
40.5-0.8g, Mg
2SO
47H2O 2.0-2.3g, N a
2SO
40.5-0.8g, CaCl
20.1-0.3g, (NH4)
3SO4 0.1-0.3g, C
3H
5O
3Na 0.1-0.3g;
B) picking 0.1～1ml mud is loaded in the Erlenmeyer flask that contains substratum 500-600m l, seals and tightens with bungee with plastics film, and through 6-8 days cultivation, the upper strata nutrient solution became thick black by oyster white;
C) get 100 ml-150ml nutrient solutions; Pack in the 250ml Erlenmeyer flask 110 ℃-120 ℃ high pressure steam sterilization 15-25 minute, in the aseptic technique environment, again from step B) move into the first culture bacteria liquid of 10ml to this step through the nutrient solution of high pressure steam sterilization; Seal with plastics film; Put in 25 ℃ of-30 ℃ of thermostat containers and cultivate, so add rich the cultivation 3-4 time, finally obtain the sulphate reducing bacteria of enrichment culture.
3) add, domestication and immobilization sulphate reducing bacteria: the sulphate reducing bacteria of cultivating is added to the aerobic area 2 of self consolidation system according to 103-104/ml, the artificial pasture and water 3 of aerobic area 2 is hung film, hang film time span 4-6 week; 3 in the artificial pasture and water of aerobic zone 4 are adopted the river natural membrane, hang the film time span 15-30 days.
Embodiment 1
A kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention is in being rich in the river course of vitriol, according to riverbed, river course natural structure; The self consolidation system is set; Adopt the zonal structure of aerobic/anaerobic, lake inlet water 1 gets into the self consolidation system, and the river 5 after the processing is gone into the lake through the self consolidation system; Realize effective removal of vitriol in the river water body, the steps include:
1) make up the self consolidation system: on the river course, along the river flow direction two reaction zones are set, are respectively aerobic area 2 and aerobic zone 4, wherein aerobic area 2 adopts enclosed construction, no whipping device; 4 of aerobic zones adopt unenclosed construction, and the bottom is provided with microporous aeration device 6, and microporous aeration device 6 provides power resources through solar energy equipment 7; The reactor material of whole self consolidation system is selected the oilcloth of band anchor for use; To inside and outside the self-cleaning consolidation system and the water body between aerobic area 2 and the aerobic zone 4 to carry out service area separated; Wherein, Aerobic area 2 water levels are higher than the about 5cm of aerobic zone 4 water levels, and the current between aerobic area 2 and the aerobic zone 4 adopt top gravity overflow; Aerobic area 2 is fixed artificial pasture and water 3 with aerobic zone 4 interior layouts; Aerobic area 2 and aerobic zone 4 interior artificial pasture and water 3 of arranging the Japanese TBR of employing company, the model of selecting for use is: PP+K-45 (material polypropylene+vinylon), specific surface area 1.6m
2/ m, the structure that its fine and closely woven fiber yarn adds the nylon bracing frame is beneficial to multiple biomembranous fixed growth, and buoy (high-density ball float) is fixed in artificial pasture and water 3 upper ends, and the lower end does not have fixing, floats with current, and buoy is fixed on the underframe in riverbed.
2) enrichment culture sulphate reducing bacteria on substratum, sulphate reducing bacteria separate the bed mud at the water body place of self-contained vitriol, and sulphate reducing bacteria is cultivated, and concrete separation and culturing process are:
A) contained staple is respectively NH in the 1L substratum
4Cl 1.0g, K
2HPO
40.5g, Mg
2SO
47H
2O 2.0g, Na
2SO
40.5g, CaCl
20.1g, (NH
4)
3SO
40.1g, C
3H
5O
3Na 0.1g;
B) picking 0.1ml mud is loaded in the Erlenmeyer flask that contains substratum 500m l, seals and tightens with bungee with plastics film, and through 6 days cultivation, the upper strata nutrient solution became thick black by oyster white;
C) get 100 ml nutrient solutions; Pack in the 250ml Erlenmeyer flask 110 ℃ of high pressure steam sterilizations 15 minutes are in the aseptic technique environment, again from step B) move into the first culture bacteria liquid of 10ml to this step through the nutrient solution of high pressure steam sterilization; Seal with plastics film; Put in 25 ℃ of thermostat containers and cultivate, so add rich the cultivation 3 times, finally obtain the sulphate reducing bacteria of enrichment culture.
3) add, domestication and immobilization sulphate reducing bacteria: with the sulphate reducing bacteria of cultivating according to 10
3Individual/ml is added to the aerobic area 2 of self consolidation system, and the artificial pasture and water 3 of aerobic area 2 are hung film, about 4 weeks of time span; The artificial pasture and water of aerobic zone 4 are then adopted river natural membrane process, and the time is 15 days.
Handle forward and backward organism and the average removal effect contrast of suspended substance through a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention, as shown in table 1.
Table 1 self consolidation system is to the average removal effect of vitriol, organism and suspended substance
| Intake | Water inlet | Water outlet | Clearance (%) |
| SO 4 2-(mg/L) | 43.3 | 0.5 | 98.8 |
| BOD 5(mg/L) | 10 | 6.4 | 36 |
| SS(mg/L) | 9 | 6 | 33.3 |
Embodiment 2
A kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention is in being rich in the river course of vitriol, according to riverbed, river course natural structure; The self consolidation system is set; Adopt the zonal structure of aerobic/anaerobic, lake inlet water 1 gets into the self consolidation system, and the river 5 after the processing is gone into the lake through the self consolidation system; Realize effective removal of vitriol in the river water body, the steps include:
1) make up the self consolidation system: on the river course, along the river flow direction two reaction zones are set, are respectively aerobic area 2 and aerobic zone 4, wherein aerobic area 2 adopts enclosed construction, no whipping device; 4 of aerobic zones adopt unenclosed construction, and the bottom is provided with microporous aeration device 6, and microporous aeration device 6 provides power resources through solar energy equipment 7; The reactor material of whole self consolidation system is selected the oilcloth of band anchor for use; To inside and outside the self-cleaning consolidation system and the water body between aerobic area 2 and the aerobic zone 4 to carry out service area separated; Wherein, Aerobic area 2 water levels are higher than the about 30cm of aerobic zone 4 water levels, and the current between aerobic area 2 and the aerobic zone 4 adopt top gravity overflow; Aerobic area 2 is fixed artificial pasture and water 3 with aerobic zone 4 interior layouts; Aerobic area 2 and aerobic zone 4 interior artificial pasture and water 3 of arranging the Japanese TBR of employing company, the model of selecting for use is: PP+K-45 (material polypropylene+vinylon), specific surface area 1.9m
2/ m, the structure that its fine and closely woven fiber yarn adds the nylon bracing frame is beneficial to multiple biomembranous fixed growth, and buoy (high-density ball float) is fixed in artificial pasture and water 3 upper ends, and the lower end does not have fixing, floats with current, and buoy is fixed on the underframe in riverbed.
2) enrichment culture sulphate reducing bacteria on substratum, sulphate reducing bacteria separate the bed mud at the water body place of self-contained vitriol, and sulphate reducing bacteria is cultivated, and concrete separation and culturing process are:
A) contained staple is respectively NH in the 1L substratum
4Cl 1.2g, K
2HPO
40.8g, Mg
2SO
47H
2O 2.3g, Na
2SO
40.8g, CaCl
20.3g, (NH
4)
3SO
40.3g, C
3H
5O
3Na 0.3g;
B) picking 1ml mud is loaded in the Erlenmeyer flask that contains substratum 600m l, seals and tightens with bungee with plastics film, and through 8 days cultivation, the upper strata nutrient solution became thick black by oyster white;
C) get 150 ml nutrient solutions; Pack in the 250ml Erlenmeyer flask 120 ℃ of high pressure steam sterilizations 25 minutes are in the aseptic technique environment, again from step B) move into the first culture bacteria liquid of 10ml to this step through the nutrient solution of high pressure steam sterilization; Seal with plastics film; Put in 30 ℃ of thermostat containers and cultivate, so add rich the cultivation 4 times, finally obtain the sulphate reducing bacteria of enrichment culture.
3) add, domestication and immobilization sulphate reducing bacteria: with the sulphate reducing bacteria of cultivating according to 10
4Individual/ml is added to the aerobic area of self consolidation system, and the artificial pasture and water of aerobic area 2 are hung film, about 6 weeks of time span; The artificial pasture and water of aerobic zone 4 are then adopted river natural membrane process, and the time is 30 days.
Handle forward and backward organism and the average removal effect contrast of suspended substance through a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention, as shown in table 2.
Table 2 self consolidation system is to the average removal effect of vitriol, organism and suspended substance
| Intake | Water inlet | Water outlet | Clearance (%) |
| SO 4 2-(mg/L) | 40 | 0.35 | 99.12 |
| BOD 5(mg/L) | 8 | 4.4 | 45 |
| SS(mg/L) | 7 | 4 | 42.9 |
Embodiment 3
A kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention is in being rich in the river course of vitriol, according to riverbed, river course natural structure; The self consolidation system is set; Adopt the zonal structure of aerobic/anaerobic, lake inlet water 1 gets into the self consolidation system, and the river 5 after the processing is gone into the lake through the self consolidation system; Realize effective removal of vitriol in the river water body, the steps include:
1) make up the self consolidation system: on the river course, along the river flow direction two reaction zones are set, are respectively aerobic area 2 and aerobic zone 4, wherein aerobic area 2 adopts enclosed construction, no whipping device; 4 of aerobic zones adopt unenclosed construction, and the bottom is provided with microporous aeration device 6, and microporous aeration device 6 provides power resources through solar energy equipment 7; The reactor material of whole self consolidation system is used reinforced concrete wall; To inside and outside the self-cleaning consolidation system and the water body between aerobic area 2 and the aerobic zone 4 to carry out service area separated; Wherein, Aerobic area 2 water levels are higher than the about 25cm of aerobic zone 4 water levels, and the current between aerobic area 2 and the aerobic zone 4 adopt top gravity overflow; Aerobic area 2 is fixed artificial pasture and water 3 with aerobic zone 4 interior layouts; Aerobic area 2 and aerobic zone 4 interior artificial pasture and water 3 of arranging the Japanese TBR of employing company, the model of selecting for use is: PP+K-45 (material polypropylene+vinylon), specific surface area 1.8m
2/ m, the structure that its fine and closely woven fiber yarn adds the nylon bracing frame is beneficial to multiple biomembranous fixed growth, and buoy (high-density ball float) is fixed in artificial pasture and water 3 upper ends, and the lower end does not have fixing, floats with current, and buoy is fixed on the underframe in riverbed.
2) enrichment culture sulphate reducing bacteria on substratum, sulphate reducing bacteria separate the bed mud at the water body place of self-contained vitriol, and sulphate reducing bacteria is cultivated, and concrete separation and culturing process are:
A) contained staple is respectively NH in the 1L substratum
4Cl 1.1g, K
2HPO
40.6g, Mg
2SO
47H
2O 2.2g, Na
2SO
40.6g, CaCl
20.2g, (NH
4)
3SO
40.2g, C
3H
5O
3Na 0.2g;
B) picking 0.5ml mud is loaded in the Erlenmeyer flask that contains substratum 550m l, seals and tightens with bungee with plastics film, and through 7 days cultivation, the upper strata nutrient solution became thick black by oyster white;
C) get 130 ml nutrient solutions; Pack in the 250ml Erlenmeyer flask 115 ℃ of high pressure steam sterilizations 20 minutes are in the aseptic technique environment, again from step B) move into the first culture bacteria liquid of 10ml to this step through the nutrient solution of high pressure steam sterilization; Seal with plastics film; Put in 27 ℃ of thermostat containers and cultivate, so add rich the cultivation 4 times, finally obtain the sulphate reducing bacteria of enrichment culture.
3) add, domestication and immobilization sulphate reducing bacteria: with the sulphate reducing bacteria of cultivating according to 10
4Individual/ml is added to the aerobic area 2 of self consolidation system, and the artificial pasture and water of aerobic area 2 are hung film, about 5 weeks of time span; The artificial pasture and water of aerobic zone 4 are hung film and then adopt river natural membrane process, and the time is 20 days.
Handle forward and backward organism and the average removal effect contrast of suspended substance through a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of the present invention, as shown in table 3.
Table 3 self consolidation system is to the average removal effect of vitriol, organism and suspended substance
| Intake | Water inlet | Water outlet | Clearance (%) |
| SO 4 2-(mg/L) | 50 | 0.55 | 98.9 |
| BOD 5(mg/L) | 12 | 5.1 | 57.5 |
| SS(mg/L) | 11 | 7 | 36.4 |
Claims (3)
1. method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity is characterized in that its step is:
1) make up the self consolidation system: on the river course, make up the self consolidation system along the river flow direction, it comprises two reaction zones, is respectively aerobic area (2) and aerobic zone (4), and wherein aerobic area (2) adopts enclosed construction, no whipping device; Aerobic zone (4) then adopts unenclosed construction, and the bottom is provided with microporous aeration device (6), and microporous aeration device (6) provides power through solar energy equipment (7); The reactor material of whole self consolidation system is selected the oilcloth of band anchor for use or is used reinforced concrete wall; To inside and outside the self-cleaning consolidation system and the water body between aerobic area (2) and the aerobic zone (4) to carry out service area separated; Wherein, Aerobic area (2) water level is higher than the about 5～30cm of aerobic zone (4) water level, and the current between aerobic area (2) and the aerobic zone (4) adopt top gravity overflow; Arrange fixing artificial pasture and water (3) in aerobic area (2) and the aerobic zone (4);
2) enrichment culture sulphate reducing bacteria on substratum;
3) add, domestication and immobilization sulphate reducing bacteria: with the sulphate reducing bacteria of cultivating according to 10
3-10
4Individual/ml is added to the aerobic area (2) of self consolidation system, and the artificial pasture and water (3) of aerobic area (2) are hung film, hangs film time span 4-6 week; The artificial pasture and water (3) of aerobic zone (4) are then adopted the river natural membrane, hang the film time span 15-30 days.
2. according to the said a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity of claim 1; It is characterized in that; The artificial pasture and water (3) of self consolidation system in the described step 1), buoy is fixed in the upper end, and the lower end does not have fixing; Float with current, buoy is fixed on the underframe in riverbed.
3. a kind of method of utilizing sulphate reducing bacteria to remove the lake inlet water salinity according to claim 1 is characterized in that described step 2) middle sulphate reducing bacteria, separate the bed mud at self-contained vitriol water body place; Sulphate reducing bacteria is cultivated, and concrete separation and culturing process are:
A) in the 1L substratum, staple: NH
4Cl 1.0-1.2g, K
2HPO
40.5-0.8g, M g
2SO
4 7H
2O 2.0-2.3g, N a
2SO
40.5-0.8g, CaCl
20.1-0.3g, (NH
4)
3SO
40.1-0.3g, C
3H
5O
3Na 0.1-0.3g;
B) picking 0.1～1ml mud is loaded in the Erlenmeyer flask that contains substratum 500-600m l, seals and tightens with bungee with plastics film, and through 6-8 days cultivation, the upper strata nutrient solution became thick black by oyster white;
C) get 100 ml-150ml nutrient solutions; Pack in the 250ml Erlenmeyer flask 110 ℃-120 ℃ high pressure steam sterilization 15-25 minute, in the aseptic technique environment, again from step B) move into the first culture bacteria liquid of 10ml to this step through the nutrient solution of high pressure steam sterilization; Seal with plastics film; Put in 25 ℃ of-30 ℃ of thermostat containers and cultivate, so add rich the cultivation 3-4 time, finally obtain the sulphate reducing bacteria of enrichment culture.
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Application publication date: 20120613 |