CN106007067A - Microbial adsorption, flocculation and collection integrated technology for heavy metal ion wastewater treatment - Google Patents
Microbial adsorption, flocculation and collection integrated technology for heavy metal ion wastewater treatment Download PDFInfo
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- CN106007067A CN106007067A CN201610490007.5A CN201610490007A CN106007067A CN 106007067 A CN106007067 A CN 106007067A CN 201610490007 A CN201610490007 A CN 201610490007A CN 106007067 A CN106007067 A CN 106007067A
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- flocculation
- heavy metal
- flocculant
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- microorganism
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a microbial adsorption, flocculation and collection integrated technology for heavy metal ion wastewater treatment. The technology comprises the following steps: (1) wastewater pH regulation; (2) microbial adsorption; (3) liquid collection after the adsorption; (4) liquid-phase flocculation and optimal initial pH regulation; (5) flocculant addition; (6) thalli flocculation; and (7) thalli collection. The technology disclosed by the invention has the following characteristics: (I) the metal ion wastewater is subjected to integrated treatment, being convenient and quick; (II) the microbial thalli are subjected to flocculation collection by use of an industrial common flocculant, and the adopted flocculant and related equipment are simple while the cost is low; (III) the microbial adsorption device and flocculation device involved in the technology are skid-mounted devices which are detachable and convenient and quick; and (IV) the technology can be applied to the large-scale treatment of polluting cations in the wastewater of heavy metal pollution industry, nuclear industry and the like and to the sudden water body pollution accidents and has a broad development space and market prospect.
Description
Technical field
The invention belongs to technical field of sewage, particularly relate to a kind of process for effluent containing heavy metal ions microorganism adsorption, flocculate, collect integral process.
Background technology
In waste water treatment, the attention of people it is increasingly subject to currently with microorganism adsorption heavy metal ion, biological adsorption (Biosorption) is a kind of emerging technology processing effluent containing heavy metal ions pollution, it is by biological cell (based on microorganism) or biomaterial adsorption heavy metal ion, its wide material sources, when the concentration of heavy metal ion in water is relatively low, can concentrate by means of adsorption equilibrium or remove the heavy metal ion in water, also can reclaim heavy metal ion further it is considered to be the technology of a kind of replacement traditional treatment method having very much potentiality.After Ruchhoft proposition in mid-term in last century removes the 239Pu in waste water with biosorption process (activated sludge), abroad this is progressively carried out and studied widely.In recent years, biological adsorption heavy metal has gradually formed an emerging research field especially, and starts to be used in the middle of the adsorption treatment of radionuclide ion by the method, and wherein the correlational study of microbial adsorbent occupies significant proportion.
Chinese patent CN201210017215.5 discloses a kind of method utilizing colloid bacillus cereus to process mercury-containing waste water, colloid bacillus cereus is inoculated in nitrogen culture medium, and it is added thereto to 10-100 purpose breeze in potassium, in 28 DEG C, 150rpm shaking table is cultivated 5 days, gained fermentation liquid adds in mercury-containing waste water as adsorbent after shaking up, and fermentation liquid is 5: 95 with the volume ratio of mercury-containing waste water, stirs 3～5min after mixing, staticly settle, filter precipitate.Compared with prior art, the present invention utilizes the colloid bacillus cereus specific adsorption effect to hydrargyrum, uses colloid bacillus cereus to process mercury-containing waste water as microbial adsorbent, has the rate of adsorption fast, not by other metal ion disturbance, the metastable feature of adsorption rate；Select containing potassium breeze (as containing the silicate breeze such as illite or potassium feldspar) as fixing material, make bacterial adhesion in silicate particles so that after the antibacterial-mineral complex Adsorption of Mercury formed easily and solution separating.But this kind of technical scheme absorption terminates the microbial adsorbent in rear liquid phase still for dispersity, according to conventional process means, generally using natural subsidence, centrifugal collection microbial adsorbent, but natural subsidence required time is long, the centrifugal small lot that is only suitable for processes.Thalline after how adsorbing in the practice of large-scale preferably separates with liquid phase and also needs to study further.
Chinese patent CN200920189349.9 discloses a kind of efficient flocculation clearing equipment, relates to a kind of flocculation water technology, and Collecting flocculation reaction, precipitation clarifying process are in the efficient flocculating water processing establishment of one.It is characterized in that: flocculation unit, precipitation unit and water unit are longitudinally arranged；Former water along water inlet pipe enter flocculation reaction unit, flow through the first whirling reaction chamber, the second whirling reaction chamber and the 3rd whirling reaction chamber, be respectively provided with in reative cell little, in, large size Vortex reactor, provide preferably hydraulics for flocculation reaction；Tube settler is set in precipitation unit, flow-stopping plate and sludge bucket are set in water distribution area.This utility model processes in flocculation process for water, being possible not only to be effectively improved the efficiency of flocculation reaction and effect, deposition efficiency and effluent quality, capacity of resisting impact load strengthens, and it is the compactest to have structure of reactor, installation is convenient, the feature that operating cost is low.This kind of technical scheme as the hardware means of a kind of flocculate and clarify, the microorganism adsorption that processes for effluent containing heavy metal ions, is flocculated, is collected integral process and provide hardware inspiration.
Chinese patent CN99801824.4 discloses a kind of rapid coagulation-flocculation for processing waste water and intermediate processing, can process rapidly the waste water including storm runoff, moreover it is possible to make the precipitate produced in processing procedure be reused valuably.The method is to assemble with high speed and be precipitated as in the system of based process waste water carrying out, this system includes the most continuously coupled mixing channel, agitator tank, polymer aggregational groove and stillpot, described system is equipped with transmitting line so that the precipitate produced in stillpot is sent to mixing channel or agitator tank, on the one hand the method includes the coagulating agent based on clay mineral is added mixing channel, its Clay Minerals includes that zeolite or bentonite are as key component, inorganic aggregating agent is added agitator tank, and polymeric flocculant is added polymer aggregational groove；On the other hand include adding at least one in mixing channel, agitator tank and polymer aggregational groove so that precipitate produced by process waste water is transformed into reusable porous ceramics glass particle and diatomaceous mixture.This kind of technical scheme as a kind of rapid coagulation-flocculation and precipitation means, the microorganism adsorption that processes for effluent containing heavy metal ions, is flocculated, is collected integral process and provide certain technology inspiration.
Therefore study at the microorganism adsorption of the contaminative cationes such as all kinds of heavy metals, nucleic forefathers; and on the basis of the laboratory batch absorption result of study carried out; process for industrial pollution cation scale, low-cost high-efficiency; and the emergency processing etc. of the relevant suddenly accident being likely to occur, the microorganism adsorption proposing a kind of effluent containing heavy metal ions, the method flocculated, collect integration.
Summary of the invention
Problem for above existing existence, the present invention provides a kind of microorganism adsorption processed for effluent containing heavy metal ions, flocculation, collect integral process, metal ion waste water can be carried out integrated process, fast and easy, utilize industrial conventional flocculant that microbial cells carries out flocculation to collect simultaneously, flocculant used and relevant device are simple, required low cost, and device therefor belongs to skid-mounted device, detachably, convenient and swift, can be used for heavy metal pollution industry, in the waste water such as nuclear industry, the scale of contaminative cation processes, can also be used for sudden water pollution event, there is wide development space and market prospect.
Technical program of the present invention lies in:
The present invention provide a kind of process for effluent containing heavy metal ions microorganism adsorption, flocculate, collect integral process, comprise the following steps:
(1) wastewater pH regulation: adding pH adjusting agent sodium hydroxide or nitric acid in liquid, regulation waste liquor PH is the optimum condition of microorganism adsorption；
(2) microorganism adsorption: add certain density microorganism heavy metal waste water and carry out the absorption of certain time；
(3) after absorption, liquid is collected: in microorganism adsorption device, after microbial adsorbent has fully adsorbed the contaminative cation such as heavy metal ion, radionuclide ion, collects this solution and proceeds to flocculation plant；
(4) the optimal initial pH regulator of liquid phase flocculation: add pH adjusting agent sodium hydroxide or nitric acid in the above-mentioned liquid proceeded in flocculation plant, making suspension is flocculation optimum condition；
(5) flocculant adds: add flocculant configure in suspension points for 2～4 times, and each interpolation interval time is 5min～15min；
(6) thalline flocculation: after adding flocculant, suspension quickly stirs 10s～90s, after making flocculant and suspension be sufficiently mixed, makes suspension flocculating sedimentation 30min～60min in a stationary situation；
(7) microorganism collection: when, after flocculating sedimentation, taking out supernatant, then the microbial cells precipitated is taken out filtration, then dry to constant weight with at 70 DEG C～110 DEG C in drying baker.
Further, described in step (2), microorganism is cereuisiae fermentum or bread microzyme.
Further, described in step (5), flocculant is the one in aluminium polychlorid, aluminium salt, iron salt, polyacrylamide etc..
Due to the fact that and have employed above-mentioned technology, be allowed to the most concrete actively having the beneficial effect that
1, the present invention can carry out integrated process, fast and easy to metal ion waste water.
2, the present invention can utilize industrial conventional flocculant microbial cells to carry out flocculation collection, flocculant used and relevant device simply, required low cost.
3, device therefor of the present invention belongs to skid-mounted device, detachably, convenient and swift；Automaticity is high, it is possible to realize the most ventilative function, it is not necessary to extra weather detection devices.
4, during the present invention can be used in the waste water such as heavy metal pollution industry, nuclear industry, the scale of contaminative cation processes.
5, the present invention can be used in sudden water pollution event, as a kind of emergency processing means, has wide development space and market prospect.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings, and embodiments of the present invention include but not limited to the following example.
Embodiment: to achieve these goals, the technical solution used in the present invention is as follows:
As it is shown in figure 1, the present invention provide a kind of process for effluent containing heavy metal ions microorganism adsorption, flocculate, collect integral process, comprise the following steps:
(1) wastewater pH regulation: adding pH adjusting agent sodium hydroxide or nitric acid in liquid, regulation waste liquor PH is the optimum condition of microorganism adsorption；
(2) microorganism adsorption: add certain density microorganism heavy metal waste water and carry out the absorption of certain time；
(3) after absorption, liquid is collected: in microorganism adsorption device, after microbial adsorbent has fully adsorbed the contaminative cation such as heavy metal ion, radionuclide ion, collects this solution and proceeds to flocculation plant；
(4) the optimal initial pH regulator of liquid phase flocculation: add pH adjusting agent sodium hydroxide or nitric acid in the above-mentioned liquid proceeded in flocculation plant, making suspension is flocculation optimum condition；
(5) flocculant adds: add flocculant configure in suspension points for 2～4 times, and each interpolation interval time is 5min～15min；
(6) thalline flocculation: after adding flocculant, suspension quickly stirs 10s～90s, after making flocculant and suspension be sufficiently mixed, makes suspension flocculating sedimentation 30min～60min in a stationary situation；
(7) microorganism collection: when, after flocculating sedimentation, taking out supernatant, then the microbial cells precipitated is taken out filtration, then dry to constant weight with at 70 DEG C～110 DEG C in drying baker.
The present invention is further arranged to: microorganism described in step (2) is cereuisiae fermentum or bread microzyme.
The present invention is further arranged to: described in step (5), flocculant is the one in aluminium polychlorid, aluminium salt, iron salt, polyacrylamide etc..
By using technique scheme, utilize aluminium polychlorid (PAC) to absorption Sr2+After cereuisiae fermentum solution flocculation and several frequently seen flocculant to absorption Sr2+After cereuisiae fermentum flocculation instantiation:
Example table 1. cereuisiae fermentum is to Sr2+Adsorption effect
Table 1 cereuisiae fermentum is to Sr2+Adsorption effect
Example 2.PAC is to the cereuisiae fermentum solution flocculating effect after absorption
Table 2 PAC is to absorption Sr2+After the flocculating effect of cereuisiae fermentum solution
Above one embodiment of the present of invention is described in detail, but described content has been only presently preferred embodiments of the present invention, it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement etc., within all should still belonging to the patent covering scope of the present invention.
Claims (4)
1. the microorganism adsorption that processes for effluent containing heavy metal ions, flocculate, collect an integral process,
It is characterized in that: comprise the following steps:
(1) wastewater pH regulation: add pH adjusting agent sodium hydroxide or nitric acid in liquid, regulate waste liquor PH
Optimum condition for microorganism adsorption；
(2) microorganism adsorption: add certain density microorganism heavy metal waste water and carry out the suction of certain time
Attached；
(3) after absorption, liquid is collected: in microorganism adsorption device, when microbial adsorbent has fully adsorbed
After the contaminative cation such as heavy metal ion, radionuclide ion, collect this solution and proceed to flocculation plant；
(4) the optimal initial pH regulator of liquid phase flocculation: add pH in the above-mentioned liquid proceeded in flocculation plant
Regulator sodium hydroxide or nitric acid, making suspension is flocculation optimum condition；
(5) flocculant adds: point flocculant that 2～4 additions have configured in suspension, adds every time
Interval time is 5min～15min；
(6) thalline flocculation: after adding flocculant, suspension is quickly stirred 10s～90s, makes
After flocculant and suspension are sufficiently mixed, make suspension flocculating sedimentation 30min～60min in a stationary situation；
(7) microorganism collection: when, after flocculating sedimentation, taking out supernatant, then the microbial cells that will precipitate
Take out and filter, then dry to constant weight with at 70 DEG C～110 DEG C in drying baker.
A kind of microorganism adsorption for effluent containing heavy metal ions process the most according to claim 1, wadding
Solidifying, collection integral process, it is characterised in that: microorganism described in step (2) is cereuisiae fermentum or face
Bag yeast.
A kind of microorganism adsorption for effluent containing heavy metal ions process the most according to claim 1, wadding
Solidifying, collection integral process, it is characterised in that: microorganism adsorption device described in step (3) and flocculation dress
Put and all use skid-mounted device.
A kind of microorganism adsorption for effluent containing heavy metal ions process the most according to claim 1, wadding
Solidifying, collection integral process, it is characterised in that: described in step (5), flocculant is aluminium polychlorid, aluminum
One in salt, iron salt, polyacrylamide etc..
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610490007.5A CN106007067A (en) | 2016-06-27 | 2016-06-27 | Microbial adsorption, flocculation and collection integrated technology for heavy metal ion wastewater treatment |
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| CN201610490007.5A CN106007067A (en) | 2016-06-27 | 2016-06-27 | Microbial adsorption, flocculation and collection integrated technology for heavy metal ion wastewater treatment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096507A (en) * | 2017-05-24 | 2017-08-29 | 辽宁大学 | A kind of preparation method and applications for the microbial adsorbent for handling heavy metals in industrial wastewater ion |
| CN107381736A (en) * | 2017-09-15 | 2017-11-24 | 初丽萍 | A kind of Clothoid type spray cleaning equipment that space crossings sterilization is realized to sewage |
| CN114057356A (en) * | 2021-11-19 | 2022-02-18 | 福建省环境保护设计院有限公司 | Device for treating industrial wastewater by biotechnology and membrane technology and treatment method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265150A (en) * | 2013-06-09 | 2013-08-28 | 西南科技大学 | Method for flocculation processing after adsorption of polluting positive ions by microorganisms |
| CN203545761U (en) * | 2013-11-20 | 2014-04-16 | 陕西理工学院 | Flocculating settling integrated device for treating heavy metal wastewater |
-
2016
- 2016-06-27 CN CN201610490007.5A patent/CN106007067A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265150A (en) * | 2013-06-09 | 2013-08-28 | 西南科技大学 | Method for flocculation processing after adsorption of polluting positive ions by microorganisms |
| CN203545761U (en) * | 2013-11-20 | 2014-04-16 | 陕西理工学院 | Flocculating settling integrated device for treating heavy metal wastewater |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096507A (en) * | 2017-05-24 | 2017-08-29 | 辽宁大学 | A kind of preparation method and applications for the microbial adsorbent for handling heavy metals in industrial wastewater ion |
| CN107381736A (en) * | 2017-09-15 | 2017-11-24 | 初丽萍 | A kind of Clothoid type spray cleaning equipment that space crossings sterilization is realized to sewage |
| CN114057356A (en) * | 2021-11-19 | 2022-02-18 | 福建省环境保护设计院有限公司 | Device for treating industrial wastewater by biotechnology and membrane technology and treatment method thereof |
| CN114057356B (en) * | 2021-11-19 | 2023-11-07 | 福建省环境保护设计院有限公司 | Device for treating industrial wastewater by biotechnology and membrane technology and treatment method thereof |
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Application publication date: 20161012 |