CN106745665A - A kind of device and method for improving biological deferrization manganese efficiency - Google Patents
A kind of device and method for improving biological deferrization manganese efficiency Download PDFInfo
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- CN106745665A CN106745665A CN201710195490.9A CN201710195490A CN106745665A CN 106745665 A CN106745665 A CN 106745665A CN 201710195490 A CN201710195490 A CN 201710195490A CN 106745665 A CN106745665 A CN 106745665A
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- 239000011572 manganese Substances 0.000 title claims abstract description 88
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 78
- 241000894006 Bacteria Species 0.000 claims abstract description 40
- 239000000706 filtrate Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 119
- 229910001868 water Inorganic materials 0.000 claims description 119
- 239000004576 sand Substances 0.000 claims description 30
- 238000005273 aeration Methods 0.000 claims description 27
- 241001365789 Oenanthe crocata Species 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 22
- 230000000694 effects Effects 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 10
- 238000011001 backwashing Methods 0.000 claims description 8
- 238000011081 inoculation Methods 0.000 claims description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- 230000035800 maturation Effects 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000010899 nucleation Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 59
- 229910052742 iron Inorganic materials 0.000 abstract description 27
- 229920001661 Chitosan Polymers 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 9
- 230000010198 maturation time Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000011953 bioanalysis Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- WQHONKDTTOGZPR-UHFFFAOYSA-N [O-2].[O-2].[Mn+2].[Fe+2] Chemical compound [O-2].[O-2].[Mn+2].[Fe+2] WQHONKDTTOGZPR-UHFFFAOYSA-N 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 21
- 238000004090 dissolution Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 230000036284 oxygen consumption Effects 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- VASIZKWUTCETSD-UHFFFAOYSA-N oxomanganese Chemical compound [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of device and method for improving biological deferrization manganese efficiency, the device has the filter post of relatively low thickness of filter bed, use circulation stop formula process for fixation carries out bio-film colonization with liquid ratio by the dominant bacteria of iron-manganese oxide slightly larger than the bacterium amount that connects of filtrate porosity, and filter post is filtered after being cultivated；Its chitosan fluid dressing maturation time is 30 days, and thickness of filter bed can be reduced to 70cm, and maximum rate of filtering can be promoted to 12m/h.The apparatus and method can shorten filtering layer maturation time, improve the efficiency of biologic filter, can provide technological service and theoretical direction for engineering practice, further promote the extensive use of bioanalysis removing of iron and manganese technology.
Description
Technical field
The present invention relates to a kind of underground water treating device and method, more particularly to a kind of dress for improving biological deferrization manganese efficiency
Put and method, belong to water-treatment technology field.
Background technology
Iron manganese content is high in underground water, causes that water body chroma is big, have iron taste, gives people production and living and brings greatly not
Just, or even on health also there is certain influence.It is the practical problem for having to solve to remove the ferrimanganic in underground water, therefore
Lower water removing of iron and manganese technology is always the focus that experts and scholars study.At present, removing of iron and manganese method mainly have chemical contact oxidizing process,
Chlorination oxidation ultrafiltration, Fe3+Immersion charcoal absorption filtration method, bioactive carbon adsorption filtration method, biological quartz sand filtering layer drop
Filter method etc..Wherein bioanalysis removing of iron and manganese technical matters is simple, need not add chemical agent, energy consumption low, efficiency high, its actual effect
It has been be widely recognized that, and be applied to production practices.But filtering layer bio-film colonization method is answered in biological deferrization manganese current technology
Miscellaneous poorly efficient, chitosan fluid dressing maturation time is more long, and equipment volume is big, and efficiency still has the space of lifting.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of device and method for improving biological deferrization manganese efficiency, making
Removing of iron and manganese is carried out to underground water with the device, the efficiency of biological deferrization manganese can be effectively improved.
The technical scheme is that：
The invention discloses a kind of device for improving biological deferrization manganese efficiency, the device includes what is connected with raw water water inlet pipe
Drop water aeration pond, the drop in the drop water aeration pond is highly 40~50cm, and the drop water aeration pond is connected by water pipe with water leg
Logical, the water leg is connected through the first water pump by water pipe with the water inlet of a filter post, and the bottom of the filter post offers delivery port, institute
State water outlet and be communicated with outlet conduit, be provided with backwash inlet channel, the backwash inlet channel is through the second water pump and water outlet
Mouth connection；The bottom of the filter post is equipped with the bed course that particle diameter is 15~20cm thickness that 0.6~1.2cm cobbles are formed, the bed course
To be equipped with particle diameter be the thick filtering layer of 65~75cm that 0.6~1.6mm manganese sand filtering material is formed, the wherein surface of manganese sand filtering material on top
It is inoculated with iron-oxidizing bacteria kind and manganese oxidizing bacteria kind.
Its further technical scheme is：
The drop in the drop water aeration pond is highly 40cm, and the thickness of the bed course is 15cm, and the thickness of the filtering layer is
70cm。
It is described filter post side wall on from up to down interval offer several sample taps, between several sample taps between
Be divided into 13~18cm, and the top sample tap apart from filtering layer 10~15cm of over top.
Overfall is further opened with the upper end side wall of the filter post, the water inlet and height of the position less than filter post of the overfall
In the sample tap of the top.
Place between delivery port and the second water pump is located on the backwash inlet channel and is provided with flowmeter.
The invention also discloses a kind of method for improving biological deferrization manganese efficiency, the method comprises the steps：
A () device is built：Then raw water water inlet pipe will with drop height for the drop water aeration pond of 40~50cm connects
Drop water aeration pond is connected by water pipe with water leg, and the water inlet of the first water pump is connected by water pipe with water leg, by first
The delivery port of water pump is connected by water pipe with the water inlet of filter post；It is 0.6~1.2cm pebble shapes in the bottom laying particle diameter of filter post
Into the thick bed courses of 15~20cm, be what 0.6~1.6mm manganese sand filtering material was formed in the top laying particle diameter of the bed course of the bed course
65~75cm thick filtering layer；Water outlet in filter column bottom connects an exhalant canal, and backwash inlet channel is gone out with this
The mouth of a river is connected, and the second water pump and flowmeter are set on the backwash inlet channel；
B () carries out bio-film colonization to manganese sand filtering material：Isolated and purified from ripe manganese sand surface and obtain iron-oxidizing bacteria kind and manganese oxygen
Change strain, the strain that then will be obtained is obtained bacterium solution through Amplification Culture, and the obtained bacterium solution is slightly larger than into manganese sand according to liquid ratio
Filtrate porosity connects bacterium amount by bacterium solution circulation inoculation in manganese sand filtering material surface, inoculation circulation 7~8 days, daily 2~3 times, every time
Residence time is 8~12 hours；
(c) cultivating filter columns：After bio-film colonization terminates, after being aerated by drop water aeration pond in water leg is put aside
The effect that underground water raw water passes through the first water pump, is initially passed through in filter post with the slow rate of 1~1.2m/h, is gradually slightly carried later
Filtering velocity is risen, the filtering velocity before manganese sand filtering material maturation wherein in filtering layer is not higher than 3m/h, and its back washing strength is 10~11L/ (m2·
S), 1.5~2.0min of time, the cycle is 5~6 days；The manganese sand filtering material culture filtered after running 28~30 days altogether in post is ripe；
The biological deferrization manganese of (d) underground water：The underground after being aerated by drop water aeration pond in water leg will be put aside
The effect that water raw water passes through the first water pump, Filter column is led to the speed of 6~12m/h, and its back washing strength is 12~13L/ (m2·
S), 2.5~3.0min of time, the cycle is 3~4 days.
Its further technical scheme is：
The drop of drop water aeration pond described in step (a) is highly 40cm, and the thickness of the bed course is 15cm, the filtering layer
Thickness be 70cm.
Liquid ratio described in step (b) is VBacterium solution：VFiltrate=1:3~4.
Underground water raw water is passed through the initial speed of filter post for the slow rate of 1m/h is passed through in filter post in step (c), backwash
Intensity is 10L/ (m2S), time 2.0min, the cycle is 5 days；The manganese sand filtering material culture filtered after running 30 days altogether in post is ripe.
Back washing strength described in step (d) is 12L/ (m2S), time 3.0min.
The method have the benefit that：The device has the filter post of relatively low thickness of filter bed, is fixed using circulation stop formula
The dominant bacteria of iron-manganese oxide is carried out bio-film colonization by change method with liquid ratio slightly larger than the bacterium amount that connects of filtrate porosity, and filter post enters
Filtered after row culture；Its chitosan fluid dressing maturation time is 30 days, and to ferrimanganic fluctuation of concentration strong adaptability, thickness of filter bed can drop
As little as 70cm, maximum rate of filtering can be promoted to 12m/h；At filtering layer 10cm, iron is trace in water outlet, and manganese content is in filtering layer 55cm
Place is reduced to below 0.05mg/L, and efficient demanganization band is between 25~40cm of filtering layer；Work as Fe2+When concentration is more than 1.5mg/L, there is manganese
Dissolution phenomenon, reason is Fe2+With manganese sand (MnO2) there is redox reaction；DO consumption actual values are less than theoretical value, biological
Filter post removing of iron and manganese is not required to aeration of being eager to excel；During removing of iron and manganese, water body ORP is constantly raised, and when ORP is increased to 349mV, iron is gone
Remove；When ORP is increased to 422mV, manganese is removed.The apparatus and method can shorten filtering layer maturation time, improve biologic filter
Efficiency, can provide technological service and theoretical direction for engineering practice, further promote extensively should for bioanalysis removing of iron and manganese technology
With.
Brief description of the drawings
Fig. 1 is the structural representation of device of the present invention；
Fig. 2 is specific embodiment of the invention water outlet Fe2+、Mn2+Changes of contents figure；
Fig. 3 is the variation diagram of the specific embodiment of the invention water outlet DO, ORP；
Fig. 4 connects the removal effect figure of iron before and after bacterium for the specific embodiment of the invention；
Fig. 5 connects the removal effect figure of manganese before and after bacterium for the specific embodiment of the invention；
Wherein：
1- drop water aerations pond；2- water legs；
The water pumps of 3- first；4- filters post；
5- filters the water inlet of post；6- filters the delivery port of post；
7- outlet conduits；8- backwashes inlet channel；
The water pumps of 9- second；10- bed courses；
11- filtering layers；12- sample taps；
13- overfalls；14- flowmeters.
Specific embodiment
In order to better understand technological means of the invention, and can be practiced according to the content of specification, below
In conjunction with the accompanying drawings and embodiments, specific embodiment of the invention is described in further detail, following examples are used to illustrate this
Invention, but it is not limited to the scope of the present invention.
The apparatus structure of the raising biological deferrization manganese efficiency employed in this specific embodiment is referring to shown in accompanying drawing 1.The dress
Put middle aeration and use drop water aeration mode, the drop water aeration pond 1 connected with raw water water inlet pipe, the drop are provided with the apparatus
The drop of aeration tank is highly 40cm.Drop water aeration pond is connected by water pipe with water leg 2, the water level residing for water leg 2 is low
In drop water aeration pond 1, water leg 2 is connected with the water inlet of the first water pump 3 by water pipe, then by water pipe by the first water pump 3
Delivery port with filter post 4 water inlet 5 connect.The diameter that post 4 is filtered in the device is set to 10cm, a height of 120cm；With particle diameter
The cobble of 0.6~1.2cm is the bottom that bed course 10 is layed in filter post 4, bed course thickness 15cm；With the Guangxi of 0.6~1.6mm of particle diameter
Mashan manganese sand is that the top of filtrate laying bed course 10 forms filtering layer 11, the thickness of filtering layer 11 70cm.In filter post in this specific embodiment
Side wall on from up to down interval offer 5 sample taps, number consecutively is 1#, 2#, 3#, 4#, 5#, be connected two sample taps it
Between at intervals of 15cm, the sample tap 1# of the top, so can be in diverse location apart from the over top 10cm of filtering layer 11
Sample tap samples to determine the ferrimanganic concentration at different filtering layers in water outlet.In this specific embodiment on the upper end side wall of filter post
Overfall is further opened with, the position of the overfall is less than the water inlet for filtering post but higher than 1# sample taps.In the upper end side of filter post 4
Overfall 13 is offered on wall, the position of the overfall is less than the water inlet 5 for filtering post and higher than the 1# sample taps of the top.Filter post
4 bottom offers delivery port 6, and outlet conduit 7 is communicated with delivery port 6, can be set according to actual needs on outlet conduit
Flowmeter and valve.In addition backwash inlet channel 8 is also communicated with delivery port 6, the backwash inlet channel 8 is provided with the
Two water pumps 9, are extracted by the second water pump 9 and are located between the water pump 9 of delivery port 6 and second in water after filter, and backwash inlet channel 8
Place is provided with flowmeter 14 and the valve being arranged as required to, and wherein valve is closer to the one end of delivery port 6.
After the building of finishing device, bio-film colonization is carried out to the manganese sand filtering material in filter post 4.It is specially：From ripe manganese sand
Surface isolates and purifies acquisition iron-oxidizing bacteria kind and manganese oxidizing bacteria kind, and the method that this is isolated and purified is state of the art, herein
Repeat no more, the strain that then will be obtained is obtained high concentration, high activity bacterium solution through Amplification Culture, by the obtained bacterium solution according to liquid
Material compares VBacterium solution：VFiltrate=1:3 (are slightly larger than manganese sand filtering material porosity) connect bacterium amount by bacterium solution circulation inoculation in manganese sand filtering material surface, often
Its circulation 2 times, each residence time is 12 hours, inoculation circulation 7 days, because strain growth breeding is most fast in this 7 days.
Regulation culture and operational factor, the initially underground after savings being aerated by drop water aeration pond 1 in water leg 2
Water raw water is passed through filter post with the slow filtering velocity of 1m/h, later gradually small elevation filtering velocity.Filtering velocity most very much not surpasses before chitosan fluid dressing is ripe
3m/h is crossed, back washing strength is 10L/ (m2S), time 2min, the cycle is 5d；Back washing strength is after chitosan fluid dressing maturation
12L/(m2S), time 3min, the cycle is 3~4d.The operating condition of control filter post is fetched water under 6,8,10,12m/h per 24h
Sample determines iron, the concentration of manganese, investigates the influence of iron manganese content, filtering velocity and thickness of filter bed to removing of iron and manganese effect, while investigation DO,
The change of ORP.
The experimental result of this specific embodiment is referring to following.
First, the quick startup optimization of biologic filter
The timeliness of biologic filter is improved, it is critical only that can chitosan fluid dressing maturation time shorten.Filter post is filtered after water flowing
The filtrate on layer 10cm places top gradually becomes yellow, and bottom gradually becomes black, and this is after filter post first removes iron caused by demanganization.
Counted by Bacteria Culture, the bacterial population exponentially of filter material surface attachment increases.After filtering layer bacterization biofilm culture 30d,
The ferrimanganic concentration for determining water outlet is all trace and stablizes, and illustrates that now filtering layer is ripe.With it is of the prior art ripe when
Between 60~90d compare, using above-mentioned bio-film colonization method, connect bacterium amount and culture parameters, chitosan fluid dressing maturation time substantially shortens,
It is ageing to be improved.
2nd, Fe2+Influence of the concentration to demanganization effect
The dissolution phenomenon of the manganese occurred at filtering layer 10cm, analysis reason is probably by Fe2+With manganese sand (MnO2) change
Learn reaction caused.This reaction again may be with Fe2+The height of concentration is relevant.In water inlet Fe2+Concentration is respectively 0,0.5,1.0,
1.5th, in the case that 2.0mg/L, other conditions such as pH, DO are as consistent as possible, the Mn in different filtering layer depth water outlets is determined2+It is dense
Degree, as a result as shown in table 1.
The difference of table 1 Fe2+Along the demanganization situation of filtering layer depth under concentration
As shown in Table 1, as Fe in water inlet2+During concentration (being more than 1.5mg/L) high, manganese content is higher than in water outlet at filtering layer 10cm
There is the dissolution phenomenon of manganese in water inlet, and works as Fe2+Be not in then this phenomenon during concentration low (being less than 1.0mg/L).This explanation
The dissolution phenomenon of manganese is really and Fe2+The height of concentration is relevant.Work as Fe2+Can rapidly under biocatalysis during low concentration
Aoxidized by dissolved oxygen, had little time and MnO2Reaction, so being not in the dissolution phenomenon of manganese.Only work as Fe2+When concentration is high, Fe2+Quilt
Dissolved oxygen just has the Fe of part while oxidation2+With manganese sand surface MnO2Generation redox reaction, causes the dissolution phenomenon of manganese.
3rd, during removing of iron and manganese DO, ORP change
In inlet flow-patterm 6.70,12 DEG C of water temperature, Fe2+3.02mg/L、Mn2+Under 2.22mg/L, filtering velocity 6m/h, determine respectively not
With the iron manganese content of water outlet, DO and ORP at filtering layer, Fig. 2, Fig. 3 are as a result seen.
Bioanalysis removing of iron and manganese is a process of biological cell membrane surface enzymatic oxidation low price reproducibility ferrimanganic.No matter cross
How complicated journey is, energy and electron transmission What gives, but electron acceptor is finally the dissolved oxygen in water.Kept according to electron exchange
Perseverance calculates theoretical oxygen consumption value, has following formula establishment：
c(O2)=0.143c (Fe2+)+0.29c(Mn2+)
When water inlet contains Fe2+3.02mg/L, containing Mn2+During 2.22mg/L, the theoretical oxygen consumption of iron-manganese oxide is calculated by above formula
It is 1.08mg/L to be worth.From Fig. 2, Fig. 3, after chitosan fluid dressing removes complete ferrimanganic, actual dissolved oxygen content is reduced
0.75mg/L, oxygen consumption actual value is less than theoretical value, and analysis is probably due to part Mn2+It is adsorbed on bacterium surface and forms absorption
With desorption dynamic process, adsorbance more than desorption quantity cause actual oxygen demand be less than theoretical value.Be can also be seen that from Fig. 3
During ferrimanganic is removed, water body ORP is constantly raised.Because Fe2+、Mn2+Fe is oxidized to respectively3+、Mn4+, [Fe3 +]/[Fe2+] and [Mn4+]/[Mn2+] value it is increasing, so ORP is constantly raised.When ORP is increased to 349mV from 278mV,
Fe2+It is removed；When ORP is increased to 422mV from 349mV, Mn2+It is removed.It is possible thereby to iron is predicted in change according to ORP
The removal situation of manganese.
4th, filtering layer connects the removal effect of ferrimanganic before and after bacterium
To determine whether the removing of iron and manganese in manganese sand filter blanket filtration test is that bio-catalytical oxidation is playing a major role, investigate
Manganese sand filter blanket connect before bacterium with connect the removing of iron and manganese effect after bacterium maturation.In the case of other conditions are as consistent as possible, different filters are determined
Fe in water outlet at layer2+、Mn2+Concentration, is as a result shown in Fig. 4 and Fig. 5.
As shown in Figure 4, for except iron, connect after bacterium that iron-holder is dropped to by 4.76mg/L of intaking in water at filtering layer 10cm
Trace, clearance nearly 100%；And before connecing bacterium, in filtering layer same position, removal effect is only 11%, to 25cm filtering layers at when still
There is Fe2+Detection.As shown in Figure 5, for demanganization, connect after bacterium that manganese content is declined by 2.43mg/L of intaking in water at 55cm filtering layers
It is trace, clearance is 100%；And before connecing bacterium, to 55cm filtering layers at when manganese content be still 1.63mg/L, now clearance is only
39.6%.After filtering layer connects bacterium maturation as can be seen here, its removing of iron and manganese effect is significantly better than before connecing bacterium, and the oxidation of this explanation ferrimanganic is main
It is bio-catalytical oxidation effect to be.
Be specify that in above-mentioned experimental result and suitably connect bacterium amount, culture and operational factor further optimized, chitosan fluid dressing
Maturation time foreshortens to 30d, and to ferrimanganic concentration high and filtering velocity strong adaptability high, thickness of filter bed can be reduced to 70cm, maximum rate of filtering
12m/h can be promoted to；Specify that the rule of ferrimanganic removal, be removed between 0~10cm along filtering layer depth iron, manganese 10~
It is removed between 55cm, efficient demanganization band is at 25~40cm of filtering layer；Fe2+When concentration is more than 1.5mg/L, exist between iron and manganese
Redox reaction, cause the dissolution phenomenon of manganese；DO consumption actual value is less than theoretical value in experiment, and bioanalysis removing of iron and manganese is not required to
It is eager to excel and is aerated.During removing of iron and manganese, ORP is constantly raised.When ORP is increased to 349mV, iron is removed；When ORP is increased to 422mV
When, manganese is removed.
The above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, on the premise of the technology of the present invention principle is not departed from, can also make it is some improvement and
Modification, these are improved and modification also should be regarded as protection scope of the present invention.
Claims (10)
1. it is a kind of improve biological deferrization manganese efficiency device, it is characterised in that：Including the drop water aeration connected with raw water water inlet pipe
Pond (1), the drop in the drop water aeration pond is highly 40~50cm, and the drop water aeration pond is connected by water pipe with water leg (2),
The water leg is connected through the first water pump (3) by water pipe with the water inlet (5) of filter post (4), and the bottom of the filter post offers out
The mouth of a river (6), the water outlet is communicated with outlet conduit (7), is provided with backwash inlet channel (8), the backwash inlet channel
Connected with delivery port (6) through the second water pump (9)；The bottom of filter post (4) is equipped with particle diameter for 0.6~1.2cm cobbles are formed
The thick bed courses (10) of 15~20cm, the top of the bed course be equipped with particle diameter be 0.6~1.6mm manganese sand filtering material formed 65~
75cm thick filtering layer (11), the surface seeding of wherein manganese sand filtering material has iron-oxidizing bacteria kind and manganese oxidizing bacteria kind.
2. it is according to claim 1 improve biological deferrization manganese efficiency device, it is characterised in that：The drop water aeration pond
(1) drop is highly 40cm, and the thickness of the bed course (10) is 15cm, and the thickness of the filtering layer (11) is 70cm.
3. it is according to claim 1 improve biological deferrization manganese efficiency device, it is characterised in that：The side of filter post (4)
On wall from up to down interval offer several sample taps (12), between several sample taps at intervals of 13~18cm, and
Over top 10~15cm of the sample tap (12) of the top apart from filtering layer (11).
4. it is according to claim 3 improve biological deferrization manganese efficiency device, it is characterised in that：It is described to filter the upper of post (4)
Overfall (13), the water inlet (5) of the position less than filter post of the overfall and taking higher than the top are further opened with the wall of side
Sample mouthful.
5. it is according to claim 1 improve biological deferrization manganese efficiency device, it is characterised in that：The backwash water inlet pipe
Place between delivery port (6) and the second water pump (9) is located on road (8) and is provided with flowmeter (14).
6. it is a kind of improve biological deferrization manganese efficiency method, it is characterised in that：Comprise the steps：
A () device is built：Then raw water water inlet pipe will with drop height for the drop water aeration pond (1) of 40~50cm connects
Drop water aeration pond is connected by water pipe with water leg (2), and the water inlet of the first water pump (3) is connected by water pipe with water leg,
The delivery port of the first water pump (3) is connected by water pipe with the water inlet (5) of filter post (4)；It is in the bottom laying particle diameter of filter post
The bed course (10) of 15~20cm thickness that 0.6~1.2cm cobbles are formed, is 0.6 in the top laying particle diameter of the bed course of the bed course
The filtering layer (11) of 65~75cm thickness that~1.6mm manganese sand filtering material is formed；A water outlet is connected at delivery port (6) place of filter column bottom to lead to
Road (7), and backwash inlet channel (8) is connected with the delivery port, the second water pump (9) is set on the backwash inlet channel
With flowmeter (14)；
B () carries out bio-film colonization to manganese sand filtering material：Isolated and purified from ripe manganese sand surface and obtain iron-oxidizing bacteria kind and manganese oxidizing bacteria
Kind, the strain that then will be obtained is obtained bacterium solution through Amplification Culture, and the obtained bacterium solution is slightly larger than into manganese sand filtering material according to liquid ratio
Porosity connects bacterium amount by bacterium solution circulation inoculation in manganese sand filtering material surface, and inoculation circulation 7~8 days daily 2~3 times, stops every time
Time is 8~12 hours；
(c) cultivating filter columns：After bio-film colonization terminates, after being aerated by drop water aeration pond (1) in water leg (2) is put aside
Underground water raw water by the effect of the first water pump (3), be initially passed through in filter post with the slow rate of 1~1.2m/h, gradually later
In small elevation filtering velocity, wherein filtering layer manganese sand filtering material maturation before filtering velocity be not higher than 3m/h, its back washing strength be 10~
11L/(m2S), 1.5~2.0min of time, the cycle is 5~6 days；The manganese sand filtering material culture in post is filtered after running 28~30 days altogether
It is ripe；
The biological deferrization manganese of (d) underground water：The ground after being aerated by drop water aeration pond (1) in water leg (2) will be put aside
The effect that lower water raw water passes through the first water pump (3), Filter column is led to the speed of 6~12m/h, and its back washing strength is 12~13L/
(m2S), 2.5~3.0min of time, the cycle is 3~4 days.
7. it is according to claim 6 improve biological deferrization manganese efficiency method, it is characterised in that：Fall described in step (a)
The drop of water aeration tank (1) is highly 40cm, and the thickness of the bed course (10) is 15cm, and the thickness of the filtering layer (11) is
70cm。
8. it is according to claim 6 improve biological deferrization manganese efficiency method, it is characterised in that：Liquid described in step (b)
Material is than being VBacterium solution：VFiltrate=1:3~4.
9. it is according to claim 6 improve biological deferrization manganese efficiency method, it is characterised in that：Underground water in step (c)
Raw water is passed through the initial speed of filter post for the slow rate of 1m/h is passed through in filter post, and back washing strength is 10L/ (m2S), the time
2.0min, the cycle is 5 days；The manganese sand filtering material culture filtered after running 30 days altogether in post is ripe.
10. it is according to claim 6 improve biological deferrization manganese efficiency method, it is characterised in that：It is anti-described in step (d)
Backwash rate is 12L/ (m2S), time 3.0min.
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