CN1323959C - Process and its device for biologically removing heavy metal in mud - Google Patents
Process and its device for biologically removing heavy metal in mud Download PDFInfo
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- CN1323959C CN1323959C CNB200410014801XA CN200410014801A CN1323959C CN 1323959 C CN1323959 C CN 1323959C CN B200410014801X A CNB200410014801X A CN B200410014801XA CN 200410014801 A CN200410014801 A CN 200410014801A CN 1323959 C CN1323959 C CN 1323959C
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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
- Y02W10/20—Sludge processing
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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
Abstract
The present invention relates to a biologic technology for eliminating heavy metals from sludge, and devices of the technology. The devices comprise a sludge regulating pond, a bioleaching pond for heavy metals in the sludge, an acidulated sludge settling pond, a collecting pond, a heavy metal recovering pond, an aerator, a stirring device, a mechanically dewatering device, a heating device, a nutrient automatically charging machine, etc. The present invention fully utilizes the energy substances of sulfur with reducibility, ferrous iron, etc. which are contained in the sludge or are added to the sludge, the pH value of sludge medium is descended under 2 by acidophil thiobacillus under the conditions of an aerobic environment and fully mixed materials, and the heavy metals in the sludge are completely dissolved; solid-liquid separation is realized by the sludge dewatering device, and the heavy metals in the separated liquid are recovered by an alkali precipitation method. The sludge containing heavy metals is processed by the technology and the devices of the present invention, and 95% of the heavy metals contained in the sludge are eliminated, so the sanitization and resource utilization of the sludge are realized.
Description
One, technical field
The present invention relates to the environmental protection field, be applicable to removing of heavy metal in municipal sludge and the industrial sludge, for example in the electroplating sludge that produces of the leather-making mud that produces of leather-making enterprises sewage work and electroplating enterprise sewage work heavy metal remove processing etc.
Two, technical background
At present seat surplus the municipal sewage plant 500 of running has been built up in the whole nation, the nearly billion cubic meter of ability of disposing of sewage day, and wastewater treatment rate has reached 25%.According to the prediction of China's water surrounding management objectives and the Ministry of Construction, the wastewater treatment rate of going into pipe network to China city in 2005 should reach 47%, 2015 year and reach 70%, continues to build energetically, extend the inexorable trend that sewage work becomes social development.Yet with the sewage disposal cause extremely incompatible be, no matter at our province still in the whole nation, concentrated in the sewage mud of 85% above objectionable impurities (especially heavy metal) and but failed properly to be disposed always.These organic solid castoff majorities are thrown aside around the sewage work arbitrarily or simple heap is filled out or by near peasant's abuse on farmland, some in addition be poured onto near the river.The disposal lack of standardization of mud has become that a new environment dyes the source in China's soil and the water surrounding, partial offset the effect of sewage work's environment purification, seriously having restricted the sewage disposal cause develops in a healthy way, because the mud generation is very big, stable, environmental safety of none and cost-effective outlet again, therefore, the mud problem of outlet also just becomes a difficult problem that makes sewage work deeply worry about always.Though the utilization of municipal sludge soil is one of current disposal approach of extremely paying attention in the world, yet the existence of heavy metal in the mud has limited the implementation that the mud soil utilizes to a great extent.With the exception of this, also has the huge all types of industries of quantity (dirt) water treatment station (field) that gives up in China, the mud that useless (dirt) water treatment station (field) of the industry of quite a few produces contains the toxic heavy metal of higher amount, even part mud can belong to the Hazardous wastes category, and these mud become the important hidden danger of environment.
For example, according to the typical sludge from wastewater treatment plant argillaceous of China is investigated, Cu in most municipal sludges, Zn, Pb, Cr, heavy metal content such as Ni can reach hundreds of to thousands of mg/kg, Cd, and Hg, (refer to Cd, Hg content surpasses 5mg/kg to overrun metal content persons such as As; As surpasses 20mg/kg) also not rare.Some industrial sludges, higher as heavy metal content in leather-making mud, the electroplating sludge, can reach tens thousand of to hundreds thousand of mg/kg.Heavy metal is all handled less than good way for a long time in these mud.Be to adopt alkaline stabilization method (promptly in mud, adding basic materials such as flyash, cement flue Dust or lime) that heavy metal in the mud is carried out Passivation Treatment at the most, make heavy metal become low activity by high reactivity, and reduce its murder by poisoning, but total metals does not change.These mud enter in the environment, and the potential hazard of heavy metal still exists.
The mud that produces with typical certain leather-making enterprises sewage work is example, wherein contain a large amount of organism (up to about 45%), also contain the available nutritive substances of plant such as abundant N, P, K, but leather-making mud not only is difficult to dehydration especially, and because its special stench, more seriously wherein contain a large amount of heavy metal chromiums, the content of chromium is up to 10000-40000mg/kg.Though chromium mainly exists with the relatively low trivalent chromium form of toxicity in the mud, it also can change into sexavalent chrome in environment.Sexavalent chrome has bigger toxicity, can make that the people is carcinogenic, teratogenesis tire, mutagenesis, all can produce bigger harm to skin, respiratory system and Digestive tract, also influences the metabolism of living organisms such as plant.The concentration of the total chromium of regulation should be less than 600mg/kg (to the soil of pH≤6.5) or 1000mg/kg (to the soil of pH＞6.5) in the mud agricultural standards of China.At present in China, leather-making enterprises does not still have the disposal approach of standard to the mud of its generation, and majority is after adopting drying bed nature mummification or mechanical dehydration, mud is transported to the elsewhere heap fills out, and small part is used for brickmaking.Because which kind of disposal options no matter the existence of heavy metal adopt, and has the environmental pollution risk.
For removing heavy metal in the mud, Macchi etc. (1998) and Panswad (1995) just attempted adopting mineral acid such as sulfuric acid extraction to remove the scheme of leather-making mud chromium, with sulfuric acid with the pH of leather-making mud from 8 left and right adjusting to 1, chromium is removed a large amount of strippings or reclaimed by dehydration then in the mud at this moment.Wozniak and Wong (1982), Jenkins etc. (1981), Wu etc. (1998) once utilized acid or complexing agent such as H
2SO
4, HNO
3, processing city municipal sludges such as HCl, EDTA are reducing or are removing in the mud and also obtain better effects aspect the heavy metal with the chemical process of heavy metal in dissolving and the lixiviate mud.Yet because of mud has huge resiliency, particularly some industrial sludges such as leather-making mud are very big with mineral acid adjusting acid consumption, the processing costs height; Directly add mineral acid and also can cause a large amount of toxic gas hydrogen sulfide to leak, operate dangerous.These shortcomings make the chemical detoxication method of mud there is no actual application value.
If the biological detoxification technology that heavy metal in the mud is removed in the effect that utilizes microbial host acidophilia thiobacillus (also claiming " bioleaching technology "), because of reaction temperature and, environmental safety, advantage such as with low cost enjoy people's attention.The nineties in last century, external some investigators, mainly be Canadian Taygi professor leader's seminar, the microbial detoxification technology of municipal sludge is removed heavy metal has carried out some researchs.Its ultimate principle is, adding under energy substance (mainly be ferrous and reducible sulfur etc.) and the logical oxygen condition, utilize the biological oxidation of thiobacillus and the low pH environment of generation thereof to make the heavy metal stripping that exists with the insoluble form enter water, remove by solid-liquid separation again, sulfide changes vitriol into by oxygenizement, and heavy metal removing rate can reach 85%-99% in the mud.This seminar also once isolated two strains thiobacillus bacterial strain (thiobacillus ferrooxidant LX5 efficiently from municipal sludge and leather-making mud, preserving number CGMCC NO.0727 and thiobacillus thiooxidans TS6, preserving number CGMCC NO.0759), but and find to utilize heavy metal in this bacterium effective elimination mud.And successively applied for 2 national inventing patents (thiobacillus ferrooxidant and remove the method for sludge heavy-metal, application numbers: 02112924.X in April, 2002 and July; The biological eliminating method of chromium in thiobacillus thiooxidans and the leather-making mud, application number: 02137921.1).
Yet research that heavy metal biological is deviate from the relevant mud and relevant patent thereof, only be to have reported its method, the result that obtains is by the mode of shaking bottle or obtains in very little reactor, and do not relate to the research of the considerable nucleus equipment of actual engineering and facility and concrete technology.Therefore, institute's parameter that obtains and breadboard method are difficult to be applied to actual engineering.The present invention under above-mentioned background, has invented the serial equipment that the heavy metal microorganism removes in the mud that can be applied to actual engineering just.
Three, summary of the invention
The present invention relates to a kind of serial equipment that is used for mud heavy metal biological removing process.
The heavy metal biological removing process may further comprise the steps in a kind of mud: utilize thiobacillus thiooxidans under aerobic condition, sulphur powder, sulfurous iron ore etc. are oxidized to sulfuric acid, the pH of mud is descended, when the sludge pH value dropped to 1.9, heavy metal 100% ground in the mud was dissolved in the liquid phase, and mud is after dehydration, remove the heavy metal in the mud, the liquid of separating that contains heavy metal is used alkaline precipitation again, reclaims heavy metal wherein.
A kind of serial equipment that is used for realizing mud heavy metal biological removing process, comprise mud equalizing tank 1, bioleaching pond 3, acidification sludge settling tank 5, collecting tank 6, heavy metal pond for recovering 8, aerator, water extracter 10 and supporting (referring to accompanying drawing 1～accompanying drawings 6) such as pipeline, pump and valves, and mud equalizing tank 1, bioleaching pond 3, acidification sludge settling tank 5, collecting tank 6 and heavy metal pond for recovering 8 usefulness pipelines are communicated with in turn; On mud equalizing tank 1 and the pipeline that bioleaching pond 3 is connected sludge pump 2 is set, the feed pipe of sludge pump 2 is communicated with mud equalizing tank 1, and the discharge pipe of sludge pump 2 is communicated with bioleaching pond 3; On acidification sludge settling tank 5 and the pipeline that bioleaching pond 3 links to each other sludge pump 4 is set, the feed pipe of sludge pump 4 is communicated with bioleaching pond 3, and the discharge pipe of sludge pump 4 is communicated with acidification sludge settling tank 5; The pool wall upper edge short transverse different positions of acidification sludge settling tank 5 is provided with a plurality of discharge pipes, and is communicated with collecting tank 6, difference mounted valve 63 on each discharge pipe; On heavy metal pond for recovering 8 and the pipeline that collecting tank 6 links to each other sump pump 7 is set, the feed pipe of sump pump 7 is communicated with collecting tank 6, and the discharge pipe of sump pump 7 is communicated with heavy metal pond for recovering 8; Mud discharging mouth 62 is set at the bottom of acidification sludge settling tank 5 ponds and is communicated with water extracter 10 by pipeline; Mud discharging mouth 77 is set at the bottom of heavy metal pond for recovering 8 ponds and is communicated with water extracter 10 by pipeline.
Behind the primary sludge mixing in the mud equalizing tank 1, be transported in the bioleaching pond 3 and stir through sludge pump 2, simultaneously carry out oxygenation by blower fan 9, inoculated acidophilia thiobacillus bacterial strain (as thiobacillus ferrooxidant LX5 and thiobacillus thiooxidans TS6) in the bioleaching pond 3, they are under the condition of aerobic and abundant mixing, itself exists in the mud sulphur powder, sulfurous iron ore with the external source interpolation are oxidized to sulfuric acid, the pH of mud is descended.When the sludge pH in the bioleaching pond 3 dropped to 1.9, the heavy metal in the mud was dissolved in the liquid phase with regard to 100% ground, had promptly finished the bioleaching leaching process of heavy metal in the mud.Subsequently, sludge pump 4 is transported to and carries out natural subsidence in the acidification sludge settling tank 5, and after precipitation was complete, the supernatant liquor that contains heavy metal was transferred in the collecting tank 6.Precipitating sludge part in the acidification sludge settling tank 5 is back to inoculation and maintenance bacterial concentration in the bioleaching pond 3, carries out the bioleaching of next batch mud; Remaining precipitating sludge is transported to dehydration on the water extracter 10, and the heavy metal content in the mud cake is up to standard, can make other aftertreatment materials; The liquid of separating is also transferred in the collecting tank 6 because of being rich in heavy metal, is transported to heavy metal pond for recovering 8 through sump pump 7 again.In heavy metal pond for recovering 8, adopt alkaline precipitation, the heavy metal precipitation in the liquid is got off, the mud that precipitates is transported to dehydration on the water extracter 10, and supernatant liquor is back to sewage work (field); And mud cake is rich in heavy metal, recyclable utilization.The bioleaching that this cover Processes and apparatus can be finished sludge containing heavy metal is handled, and when reclaiming heavy metal, also makes mud directly carry out mechanical dehydration under the condition that does not add any flocculation agent.
In serial equipment of the present invention, the effect of mud equalizing tank 1 has the effect (seeing accompanying drawing 2) of regulating sludge concentration and storing excess sludge concurrently.At the bottom of the pond of mud equalizing tank 1, sludge pump 2 position of inhaling the mud mouths, 0.5 * 0.5 * 0.5m is set
3The groove of (but being not limited thereto), and the slope of oblique this groove will be designed at the bottom of the pond, be the slope that oblique sludge pump 2 is inhaled the mud mouth, the gradient adopted 1: 50, make in the mud equalizing tank 1 because of what action of gravity produced and be concentrated in sludge stream at the bottom of the pond naturally to groove, mud at the bottom of the pond is brought in constant renewal in, and also is convenient to empty in needs mud equalizing tank 1.The outlet conduit of sludge pump 2 is designed to two-way, and one the tunnel is the feed pipe to bioleaching pond 3, and another road is the circulating line 24 of mud in the mud equalizing tank 1.Mud circulating line 24 is provided with some arms 23, and arm 23 is positioned to different angles, make mud in the mud circulating line 24 get back to different positions in the mud equalizing tank 1, under the effect of gate valve 21 and 22, earlier the mud in the mud equalizing tank 1 is circulated with sludge pump 2, reaching the purpose of mixing mud, and then be pumped in the bioleaching pond 3.
In the serial equipment that the present invention addresses, with the supporting aerator in bioleaching pond 3, mainly form, and blower fan 9, inlet pipe 51, under meter 42, air distribution pipe 40 are communicated with in turn by the inlet pipe 51 in blower fan in the accompanying drawing 19 and the accompanying drawing 3, under meter 42, aerator 39, air distribution pipe 40 and corresponding valve; Air distribution pipe 40 is laid at the bottom of the pond in bioleaching pond 3; Aerator 39 is installed on the air distribution pipe 40.The effect of aerator, be that the air that blower fan 9 produces is transported to aerator 39 through inlet pipe 51, under meter 42, air distribution pipe 40, and be dispersed in the mud with the form of bubble, guarantee that the dissolved oxygen of mud in the bioleaching pond 3 reaches the desired level of technology of the present invention.The size of blower fan 9 air demands is determined by processing requirement.
The top, the outside in bioleaching pond 3 also is provided with an affiliated facility---nutrition self-feeding pond 45 (referring to accompanying drawing 3), agitator 44 is installed in the nutrition self-feeding pond 45, nutrition self-feeding pond 45 is provided with discharge nozzle and extend in the bioleaching pond 3, and magnetic valve 46 and gate valve 47 are installed on the discharge nozzle.When adding new primary sludge in the bioleaching pond 3, start signal 43 that will (in the accompanying drawing 1) sludge pump 2 is passed to agitator 44 and magnetic valve 46; When sludge pump 2 stops when mud is advanced in bioleaching pond 3, agitator 44 also quits work, and magnetic valve 46 cuts out simultaneously.Nutraceutical add-on was finished jointly by the on time of sludge pump 2 and the synergy of gate valve 47, the unlatching that is agitator 44 and magnetic valve 46 is by the start signal control of sludge pump 2 when 3 chargings of bioleaching pond, make when adding new primary sludge, can automatically replenish the nutritive substance of microorganism according to a certain percentage.
The method for anticorrosion treatment that the present invention is mentioned particularly, for the container of skeleton construction, adopts within it wall surface to paste 3～7 layers of woven fiber glass, every layer all the method for brushwork epoxy resin carry out anticorrosion.The application of Resins, epoxy prescription is by Resins, epoxy: solidifying agent: the ratio of dibutyl phthalate (DBP)=4: 1: 2, now with the current, the every layer of consumption of constructing is in Resins, epoxy 125g/m
2, after following 72 hours completely solidified of room temperature, still by this proportioning, consumption, brushing one deck down again.For these members that contact with material such as paddle wheel, stir shaft, baffle plates, can adopt acid resisting material to make; Also can adopt general carbon steel material to make, at this moment, carry out anticorrosionly with Resins, epoxy, according to Resins, epoxy: solidifying agent: the ratio of phthalic acid two butyric acid=4: 3: 1 is carried out proportioning, and this prescription makes Resins, epoxy thick and heavy slightly, be suitable on steel material, brushing, directly be coated on the member after during enforcement Resins, epoxy being mixed well, the 24h after fixing, 72h reaches completely solidified, bright in appearance, the feel coating is full flexible.
Because the mentioned processing requirement of the present invention is in treating processes, microorganism optimum envrionment temperature is 25 ℃～35 ℃, therefore, also be provided with heat exchanger in bioleaching pond 3, two kinds of patterns are arranged: a kind of is with placing the electric heater 50 that the resistance wire sintering forms in copper pipe, the stainless-steel pipe; Another kind is at the bottom of the pond and the pond inwall is installed snakelike stainless steel pipes 49 (referring to accompanying drawing 3), can utilize elder generations such as enterprise's used heat resource, biogas resource, solar energy resources that water is heated, and is undertaken heat passage by circulating hot water in pipeline 49 then; Also comprise a sleeving temperature monitoring instrument simultaneously, and use thermistor to make temp probe 48, temp probe 48 is installed in the bioleaching pond 3, under the control of temperature controller device, the working condition of control heat exchanger, mud in the bioleaching pond 3 can be remained on carry out bioleaching under the constant temperature of setting and handles, also make of the present invention and technology and equipment thereof can normally operation in the season of cold.
Also comprise an acidification sludge settling tank 5 (referring to accompanying drawing 5) in the serial equipment of the present invention.So-called acidification sludge, be meant that primary sludge is finished bioleaching and handled in bioleaching pond 3 after, the mud of the pH of mud about 1.9.After bioleaching finishes, acidification sludge in the bioleaching pond 3 is transported to carries out natural subsidence in the acidification sludge settling tank 5 with (in the accompanying drawing 1) sludge pump 4 (flow passage is divided into stainless steel), acidification sludge is through the natural subsidence of a few hours, the solid-liquid layering is obvious, and the liquid on top is rich in heavy metal.Form 61 is being set on the pool wall of acidification sludge settling tank 5 and, gate valve 63 is being installed on each discharge nozzle along several discharge nozzles are set on the short transverse in pond; Be the doline mud-collecting slot at the bottom of the pond and mud discharging mouth 62 be set that the pond bottom sloping is 60 °.The mud that precipitates compiles to mud discharging mouth 62, and the position and the stable back of the precipitation solid-liquid interface of acidification sludge liquid level 60 can observe chargings by form 61 time, open the gate valve 63 of corresponding position, the liquid that is rich in heavy metal is flow in (accompanying drawing 1) collecting tank 6 under the effect of deadweight.The inwall of acidification sludge settling tank 5 and collecting tank 6 all adopts the method for every layer of brushwork epoxy resin on aforesaid multilayer (3～7 layers) glasscloth to carry out rotproofing.
Also comprise a heavy metal pond for recovering 8 (as shown in Figure 6) in the serial equipment of the present invention.The liquid that contains heavy metal is pooled in (accompanying drawing 1) collecting tank 6, use (accompanying drawing 1) sump pump 7 (flow passage is divided into stainless steel) to be transported in the heavy metal pond for recovering 8 again, and adopt alkaline precipitation recovery heavy metal wherein, the heavy metal precipitation in the liquid is got off.In heavy metal pond for recovering 8, be provided with the speed change stirring mechanism, form by electromagnetic adjustable speed motor 70, speed reduction unit 71, crossbeam 72, impeller load-bearing device 73, stir shaft 74, impeller 75 and shaft coupling 76, and electromagnetic adjustable speed motor 70, speed reduction unit 71, impeller load-bearing device 73, stir shaft 74 and shaft coupling 76 link to each other in turn; Impeller 75 is installed on the stir shaft 74; Conical sludge hopper and mud discharging mouth 77 are set at the bottom of the pond, and the pool wall inboard is provided with vertical baffle plate 78.Can realize that like this stirring mechanism speed change stirs, and is convenient to finishing of flocculation sediment.The mud cake of precipitating sludge in the heavy metal pond for recovering 8 after dehydration mainly is the salt of heavy metal, recyclable utilization heavy metal composition wherein, or be cured landfill.
Four, description of drawings
Fig. 1 is a kind of serial equipment synoptic diagram that is used for realizing mud heavy metal biological removing process;
Fig. 2 is a mud equalizing tank synoptic diagram;
Fig. 3 is a bioleaching pond synoptic diagram;
Fig. 4 is a paddle wheel shape synoptic diagram;
Fig. 5 is an acidification sludge settling tank synoptic diagram;
Fig. 6 is a heavy metal pond for recovering synoptic diagram.
Five, embodiment
Utilize technology of the present invention and serial equipment thereof to handle in the case history of leather-making mud mud equalizing tank 35m
3, cylinder shape bioleaching pond 20m
3, acidification sludge settling tank 10m
3, heavy metal pond for recovering 5m
3Stirrer power is 2.2kw in the bioleaching pond, Root's blower power 5.5Kw, blast 39kpa, air quantity 4m
3/ min; Water extracter is horizontal spiral centrifuge (LW220 * 930).For handling mud is to contain the higher leather-making mud of heavy metal chromium, and solid content is 3.7%, and the content of chromium reaches the dried mud of 15900mg/kg.In the bioleaching pond, microorganism is handled through the leaching of 3d～6d, and the pH value of mud drops to 1.5～1.9, heavy metal chromium 100% stripping in the mud.The mud that leaching was handled is after natural sedimentation, with horizontal centrifuge dehydration.The rate of recovery of the heavy metal chromium in the mud is 95%, and the content of the chromium in the mud cake of primary sludge after bioleaching is handled is 580mg/kg, and the processing costs of mud per ton is below 150 yuan.Adopt technology of the present invention and serial equipment thereof, realized mud minimizing, innoxious, clean, the processing of resource utilization.
Claims (9)
1, a kind of serial equipment that is used for realizing mud heavy metal biological removing process is characterized in that:
Described serial equipment comprises mud equalizing tank, bioleaching pond, acidification sludge settling tank, collecting tank, heavy metal pond for recovering, aerator, water extracter and supporting pipeline, pump and valve, and mud equalizing tank, bioleaching pond, acidification sludge settling tank, collecting tank, heavy metal pond for recovering are communicated with in turn with pipeline;
On the pipeline that is connected between mud equalizing tank and the bioleaching pond sludge pump is set, the feed pipe of sludge pump is communicated with the mud equalizing tank, and the discharge pipe of sludge pump is communicated with the bioleaching pond;
On bioleaching pond and the pipeline that the acidification sludge settling tank is connected sludge pump is set, the feed pipe of sludge pump is communicated with the bioleaching pond, and the discharge pipe of sludge pump is communicated with the acidification sludge settling tank;
The pool wall upper edge short transverse different positions of acidification sludge settling tank is provided with a plurality of discharge pipes, and is communicated with collecting tank, difference mounted valve on each discharge pipe;
On collecting tank and the pipeline that the heavy metal pond for recovering is connected sump pump is set, the feed pipe of sump pump is communicated with collecting tank, and the discharge pipe of sump pump is communicated with the heavy metal pond for recovering;
Mud discharging mouth is set at the bottom of the pond of acidification sludge settling tank and is connected with water extracter by pipeline;
Mud discharging mouth is set at the bottom of the pond of heavy metal pond for recovering and is connected with water extracter by pipeline.
2, serial equipment according to claim 1, it is characterized in that: be the slope that oblique sludge pump is inhaled the mud mouth at the bottom of the pond of described mud equalizing tank, the sludge pump outlet conduit is designed to two-way, under the effect of gate valve, earlier the mud in the mud equalizing tank is circulated with sludge pump, make the mud in the mud equalizing tank obtain mixing, and then be pumped in the bioleaching pond.
3, serial equipment according to claim 1, it is characterized in that: the pond type in described bioleaching pond is round, ellipse, stirring mechanism is set therein, stirring mechanism comprises motor, speed reduction unit, crossbeam, load-bearing device, stir shaft, shaft coupling, bearing, paddle wheel, and motor, speed reduction unit, load-bearing device, stir shaft, shaft coupling and bearing link to each other in turn; Paddle wheel is installed on the stir shaft; The pool wall inboard is provided with vertical baffle plate.
4, serial equipment according to claim 1, it is characterized in that: the top, the outside in described bioleaching pond is provided with an affiliated facility---nutrition self-feeding pond, and the nutrition self-feeding is installed agitator in the pond, nutrition self-feeding pond is provided with discharge nozzle and extend in the bioleaching pond, magnetic valve and gate valve are installed on the discharge nozzle, and the unlatching of agitator and magnetic valve is by the start signal control of sludge pump when the charging of bioleaching pond.
5, serial equipment according to claim 1 is characterized in that: described bioleaching also is provided with heat exchanger in the pond, and two kinds of patterns are arranged: a kind of is with placing the electric heater that the resistance wire sintering forms in copper pipe, the stainless-steel pipe; Another kind is at the bottom of the pond and the pond inwall is installed snakelike stainless steel pipes, is undertaken heat passage by circulating hot water in the pipeline; Also comprise a sleeving temperature monitoring instrument, and use thermistor to make temp probe, temp probe is installed in the bioleaching pond, under the control of temperature controller device, the working condition of control heat exchanger can remain on mud in the bioleaching pond to carry out bioleaching under the constant temperature of setting and handles.
6, serial equipment according to claim 3 is characterized in that: the combination type vane that described paddle train adopts plate blade and oblique blade sheet be combined into, use 3～6 combination type vanes to be welded on the impeller of making on the blade seat; Tiltedly the angle of blade sheet and plate blade is 135 degree.
7, serial equipment according to claim 1 is characterized in that: on the pool wall of described acidification sludge settling tank form is set; The doline mud-collecting slot is arranged at the bottom of the pond.
8, serial equipment according to claim 1, it is characterized in that: in the described heavy metal pond for recovering speed change stirring mechanism is set, form by electromagnetic adjustable speed motor, speed reduction unit, crossbeam, impeller load-bearing device, stir shaft, impeller and shaft coupling, and electromagnetic adjustable speed motor, speed reduction unit, impeller load-bearing device, stir shaft and shaft coupling link to each other in turn, and impeller is installed on the stir shaft; Conical sludge hopper is arranged at the bottom of the pond; The pool wall inboard is provided with vertical baffle plate.
9, serial equipment according to claim 1 is characterized in that: described aerator is made up of blower fan, inlet pipe, under meter, aerator, air distribution pipe, and blower fan, inlet pipe, under meter, air distribution pipe are communicated with in turn; The air distribution pipe is laid at the bottom of the pond in bioleaching pond; Aerator is installed on the air distribution pipe.
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| CNB200410014801XA CN1323959C (en) | 2004-04-30 | 2004-04-30 | Process and its device for biologically removing heavy metal in mud |
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| CNB200410014801XA CN1323959C (en) | 2004-04-30 | 2004-04-30 | Process and its device for biologically removing heavy metal in mud |
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| CN1323959C true CN1323959C (en) | 2007-07-04 |
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| CN101497483B (en) * | 2008-01-28 | 2011-02-09 | 西南科技大学 | Method for treating mining as well as mining and metallurgy wastewater by low cost reaction type water treatment agent |
| CN101913743B (en) * | 2010-07-08 | 2013-08-07 | 南京农业大学 | Agent special for bioleaching municipal sludge and production process thereof |
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| CN101898859A (en) * | 2010-08-04 | 2010-12-01 | 娄底市裕德科技有限公司 | Method for removing heavy metals from sludge and special device thereof |
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| CN106045249A (en) * | 2016-07-15 | 2016-10-26 | 天津壹新环保工程有限公司 | Novel recycling sludge treatment system and treatment method |
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| CN106336100B (en) * | 2016-11-03 | 2019-04-09 | 福建省固体废物处置有限公司 | The bioleaching processing method of leather sludge |
| CN107555745A (en) * | 2017-08-30 | 2018-01-09 | 深圳市绿洲生态科技有限公司 | A kind of bioleaching system |
| CN107537187A (en) * | 2017-09-14 | 2018-01-05 | 武汉都市环保工程技术股份有限公司 | The mud-water separation pond that a kind of environment remediation field uses |
| CN107739835B (en) * | 2017-11-29 | 2023-10-20 | 洛阳理工学院 | Continuous leaching biological leaching device and method for red mud |
| CN109020139B (en) * | 2018-07-19 | 2021-07-09 | 广州福之源环保科技有限公司 | Municipal sludge reduction method |
| CN109290366A (en) * | 2018-08-30 | 2019-02-01 | 湖南新九方科技有限公司 | A kind of method of bioleaching-Biostatic Combined Treatment heavy-metal contaminated soil |
| CN113233728A (en) * | 2021-05-20 | 2021-08-10 | 李玲群 | Bioleaching and drying treatment device and using method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217615A (en) * | 1991-02-25 | 1993-06-08 | Institut National De La Recherche Scientifique | Bacterial leaching process and composition |
| CN1375553A (en) * | 2002-04-25 | 2002-10-23 | 南京农业大学 | Ferrous oxide theobacillus and sludge heavy-metal eliminating method therewith |
-
2004
- 2004-04-30 CN CNB200410014801XA patent/CN1323959C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217615A (en) * | 1991-02-25 | 1993-06-08 | Institut National De La Recherche Scientifique | Bacterial leaching process and composition |
| CN1375553A (en) * | 2002-04-25 | 2002-10-23 | 南京农业大学 | Ferrous oxide theobacillus and sludge heavy-metal eliminating method therewith |
Non-Patent Citations (3)
| Title |
|---|
| 嗜酸硫氧化菌株的分离及其在污泥生物脱毒中的应用 周顺桂等，环境科学研究，第16卷第5期 2003 * |
| 生物淋滤技术在去除污泥中重金属的应用 周桂顺，周立祥，黄焕忠，生态学报，第22卷第1期 2002 * |
| 生物淋滤技术在去除污泥中重金属的应用 周桂顺，周立祥，黄焕忠，生态学报，第22卷第1期 2002;嗜酸硫氧化菌株的分离及其在污泥生物脱毒中的应用 周顺桂等，环境科学研究，第16卷第5期 2003 * |
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