CN103086580B - Method for quickly removing heavy metals in municipal sludge - Google Patents
Method for quickly removing heavy metals in municipal sludge Download PDFInfo
- Publication number
- CN103086580B CN103086580B CN201210475843.8A CN201210475843A CN103086580B CN 103086580 B CN103086580 B CN 103086580B CN 201210475843 A CN201210475843 A CN 201210475843A CN 103086580 B CN103086580 B CN 103086580B
- Authority
- CN
- China
- Prior art keywords
- sludge
- heavy metal
- substrate
- leaching
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for quickly removing heavy metals in municipal sludge. The method comprises the following steps of: (1) based on raw sludge as a material, adding 10-25g/L S as a primer and performing enrichment culture of thiobacillus thiooxidans; then, adding the thiobacillus thiooxidans obtained as a strain into another culture liquid which uses raw sludge as a material and 10-20g/L S as the primer for secondary enrichment culture of thiobacillus thiooxidans; performing enrichment culture for at least three times, so that the bacterial liquid becomes a high concentration thiobacillus thiooxidans inoculated bacterial liquid; and (2) adjusting concentration of sludge to be treated to 1-5%, inoculating by the bacterial inoculating liquid which is cultured by at least three times, wherein the inoculating amount is at least 5% of sludge to be treated in volume, adding 10-20g/L S as the primer, adjusting pH value to 4 at 25-32 DEG C, and leaching and culturing for 2 days. According to the method, when the content of overproof heavy metals in sludge is in a range of 2 times of farm-oriented standard, all overproof heavy metals can be removed within 2 days.
Description
Technical field
The present invention relates to field of Environment Protection, relate to particularly a kind of method of quick removal municipal sludge heavy metal.
Background technology
Along with the quickening of urbanization process and the raising of wastewater treatment rate, the output of municipal sludge grows with each passing day.Only Xiamen City's sludge yield of 2007 just reaches 9.5*10
4m
3(water ratio 76%).Most cities mud all contains the nutrients such as abundant organic matter and N, P, K, and farmland reuse is main path and the optimal selection that recycling sludge utilizes, but its heavy metal content problem becomes the biggest obstacle that it is applied to soil.
Low, the practical a kind of economical and effective of bioleaching running cost in existing several removal municipal sludge heavy metal technology (chemical process, electrochemical process, phytoremediation, supercritical fluid extraction), has potential heavy metal removal method.The method is except having the effect of removing Heavy Metals in Sludge, and has the effect of synchronously killing pathogenic bacteria in mud.
Its principle is in raw sludge, to add suitable microbial substrates, utilize the direct effect of acidophilia thiobacillus or the indirect actions of its meta-bolites such as thiobacillus ferrooxidant and thiobacillus thiooxidans, by oxidation, reduction, complexing, absorption, dissolution process, by the separated lixiviate of insoluble heavy metal in mud out, then remove a large amount of heavy metals by solid-liquid separation technique.Therefore, inquiring into suitable leaching condition is to improve the key of heavy metal leaching effect.
Wong and Henry carry out the test of sequence batch (bioleaching with thiobacillus ferrooxidant to Canadian anaerobically digested sludge.Result shows, pH is that the removal efficiency of 4 o'clock heavy metals is best, and when pH value >4 or <1.5, bioleaching can be suppressed.The optimum temperature of bioleaching is 25～35 ℃, and while surpassing 40 ℃, the clearance of heavy metal sharply declines.B1aiS etc. are in sequencing batch reactor experiment, studied the removal effect of two kinds of thiobacilluss to 23 kinds of Heavy Metals in Sludges of the U.S., after the leaching of 10 days, thiobacillus thiooxidans and thiobacillus ferrooxidant are close to the clearance of heavy metal, the clearance of Zn can reach respectively 85% and 82%, the clearance of Cd be respectively 82% and 74%, two kind of bacterium all can be advantageously applied to the removal of heavy metal.Wangdans etc. (2009) are respectively with FeSO
47H
2o, simple substance S powder are that substrate is studied, and result shows the bioleaching through 14d, take simple substance S powder during as substrate, and the mud sample Cu that substrate is 6g/L, that Zn leaches rate is the highest, is respectively 18.8 and 34.8; With FeSO
47H
2when O is substrate, the mud sample Cu that substrate is 25g/L, that Zn leaches rate is the highest, is respectively 29.1 and 36.8.This kind of sequence batch (bioleaching needs the long period (6～12 days) just can reach high clearance.So people start continuous flow reactor to carry out more research.
As utilizing thiobacillus thiooxidans, (2005) such as Huang Ming remove Heavy Metals in Sludge, result shows, at matrix dosing ratio, be 5g/L and be accompanied by under 15% acclimation sludge reflux conditions, the sludge acclimatization cycle can be shortened to 5 days, Cu, the clearance of Zn and Cd has reached respectively 7O.8%, 8O.4% and 78.9%; Meanwhile, in mud, remaining heavy metal content can meet the national standard of agricultural sludge.The same year, Huang Ming etc. (2005) be take the research that elemental sulfur is substrate and are shown: at matrix dosing ratio as 5g/L and be accompanied by under 15% acclimation sludge reflux conditions, the sludge acclimatization cycle can be shortened to Cd, the clearance of Cu, Zn and Cd has reached respectively 70.8%, 80.4% and 78.9%.Then, Huang Ming etc. (2006) be take ferrous sulfate as substrate, utilize the SBR technique of simplifying to carry out bioleaching, show: at substrate dosing ratio, be that 10g/L, sludge seeding amount are 30%, room temperature is continuous aeration operation 2d under the condition of 25 ℃, the clearance of Cu and Zn is reached to 78.3% and 77.7%, clearance to Cd approaches 99%, and the residual heavy metal content after leaching processing in mud meets the national standard of agricultural sludge.Within 2009, using ferrous sulfate as substrate, the further impact of research sludge concentration on the leaching effect of heavy metal, result shows: the sludge concentration of bioleaching should be controlled at 25.6g/L, and after leaching 3d, in the municipal sludge of Guilin, residual heavy metal content meets the national standard of agricultural sludge.Research in 2010 shows that the leaching effect of simple substance sulphur granule heavy metal when 165 μ m is best.But this cover continuous flow reactor method equipment complexity copy do loaded down with trivial details.
Because exceed standard heavy metal kind, content, initial pH value gap of different areas different sewage factory is very far away, the removal of giving sludge heavy-metal particularly industrialization brings very large difficulty.
Summary of the invention
The object of the present invention is to provide a kind of method of quick removal municipal sludge heavy metal, to solve the above problem of background technology.
Technical scheme provided by the invention is as follows:
A method for quick removal municipal sludge heavy metal, comprises the steps:
(1) take raw sludge as material, add the S(sulphur of 10-20g/L) be substrate, enrichment culture thiobacillus thiooxidant (Thiobacillus thiooxidans), complete to base consumption; The thiobacillus thiooxidant of gained of take is afterwards bacterial classification, adds another to and take the nutrient solution that S that raw sludge is material, 10-20g/L is substrate, carries out secondary enrichment culture thiobacillus thiooxidant; Enrichment culture is carried out at least three times, makes this bacterium liquid become the thiobacillus thiooxidant inoculation liquid of high density.
(2) concentration of pending mud is adjusted to 1-5%, and the S that adds 10-20g/L is substrate, and pH value is adjusted to 4, uses the inoculation liquid inoculation of carrying disease germs of cultivating through at least three times, and inoculum size is pending sludge volume at least 5%, temperature 25-32 ℃, leaching cultivation 2 days.
Raw sludge of the present invention can derive from sewage work etc.
In preferred embodiment of the present invention, step (1) enrichment culture number of times is 3 times.In theory, the more concentration of incubation times is higher; In actual production, only need every day that sludge liquid to be concentrated after leaching is left to enough amounts and make bacterial classification, easy and simple to handle.
In preferred embodiment of the present invention, pH value is surveyed in being judged as that each enrichment culture finishes, if pH value lower than 2, is judged as substrate, substantially consumes completely.Also can adopt bacterium to count to reaching finite concentration is standard, but quick not as surveying pH value, simple, directly perceived.
In preferred embodiment of the present invention, it is 150-250r/min that rotating speed is cultivated in the leaching of step (2).
In preferred embodiment of the present invention, the inoculum size of step (2) is 5-15%
In optimum embodiment of the present invention, the S of 10g/L of take in step (1) is substrate; The S of 10g/L of take in step (2) is substrate; With the bacterium inoculation of three cultivations, concentration is 15%, and the pH value of pending mud is adjusted to 4,32 ℃ of temperature, and rotating speed is 200r/min.
In mud, exceed standard the content of heavy metal within the scope of 2.0 times of agricultural standards, and the S of 10g/L of take in step (1) is substrate; The S of 10g/L of take in step (2) is substrate; With the bacterium inoculation of three cultivations, inoculum size is 15%, and the concentration of pending mud is adjusted to 1.0-3.0%, and pH value is adjusted to 4,32 ℃ of temperature; Leaching is cultivated 2 days.
Principle of the present invention is as follows: the acidophilia thiobacillus of original minute quantity in raw sludge, by the optimization to bacterial classification kind, spawn culture number of times, leaching condition, sludge concentration etc., screen suitable microorganism (thiobacillus thiooxidant) fast enriching and be cultured to enough concentration (at every turn cultivate or leaching with pH<2 till).Utilize the indirect action of direct effect or its meta-bolites of thiobacillus thiooxidant, by processes such as oxidation, reduction, complexing, absorption, dissolvings, by the separated lixiviate of the insoluble heavy metal in mud out, then remove a large amount of heavy metals by solid-liquid separation technique.Heavy metal in filtrate reclaims by modes such as alkaline purifications afterwards.
Seen from the above description, the invention provides a kind of method of quick removal municipal sludge heavy metal, utilize method of the present invention, can be by the heavy metal in mud, especially heavy metal Zn, Cu, Cr, Ni clearance in short 2 days reaches respectively 59.01%, 64.11%, 58.32%, 64.90%.Exceed standard the content of heavy metal Zn, Cu, Cr, Ni in the mud within the scope of 2.0 times of agricultural standards, within 2 days, all can remove all heavy metals that exceed standard, sludge manure reaches agricultural standards through concentrated after adjusting pH, is directly used as agricultural fertilizer.And the present invention, without the extra bacterial classification that adds, has reduced cost.The substrate using is single substrate S, is convenient to calculate consumption, and reduces workload and cost.Method of the present invention can be for due to different areas different sewage factory, the exceed standard mud of heavy metal kind, content, initial pH value of difference, in actual production, after first production mud, only need every day that sludge liquid to be concentrated after leaching is left to enough amounts and make bacterial classification, easy and simple to handle, be convenient to industrialization.
Accompanying drawing explanation
Fig. 1 is different substrate kinds and the impact of concentration on Zn, the Cu amount of leaching in the embodiment of the present invention;
Fig. 2 is the impact of bacterium incubation times on Zn, the Cu amount of leaching in the embodiment of the present invention;
Fig. 3 a is temperature and the impact of pH on the Zn amount of leaching in the embodiment of the present invention;
Fig. 3 b is temperature and the impact of pH on the Cu amount of leaching in the embodiment of the present invention;
Fig. 4 is that in the embodiment of the present invention, sludge concentration leaches the impact of rate on Zn, Cu.
Embodiment
Embodiment
One, the selection of method research:
A) substrate kind and concentration choice experiment: the raw sludge of Yi Sha door city STAFF Ya Sewage Plant is material, arrange thiobacillus thiooxidant (Thiobacillus thiooxidans) substrate elemental sulfur (5,10,20g/L), Sulfothiorine (10,20,40g/L) and thiobacillus ferrooxidant (Thiobacillus ferooxidan) substrate FeSO
4.7H
2o(10,20,40g/L) totally 9 processing, carry out heavy metal leaching cultivation (25 ℃ of normal temperature, rotating speed 200r/min), after 6 days, measure common heavy metal Zn in filtrate, Cu concentration.
B) spawn culture number of times and consumption choice experiment: the more concentration of thiobacillus thiooxidant incubation times is higher, experiment adopts cultivates bacterium and once cultivates bacterium two bacterial classifications for three times, and concentration is 0,2%, 5%, 10%, 15% 5 grade, totally ten processing; The S of 10g/L of take is substrate, 25 ℃ of normal temperature, and rotating speed 200r/min carries out heavy metal leaching cultivation, within the 4th day, measures filtrate Zn, Cu concentration.
C) leaching condition optimizing experiment: the S of 10g/L of take is substrate, 5% 3 time is cultivated bacterium is bacterial classification, CK25 (25 ℃ of normal temperature), T1 (25 ℃ of normal temperature are set, initial pH is adjusted to 4), 25 ℃ of T2(normal temperature), 32 ℃ of CK32(high temperature), T3 (32 ℃ of high temperature, initial pH is adjusted to 4), 32 ℃ of T4(high temperature) 6 processing, rotating speed 200r/min carries out heavy metal leaching cultivation, within the 4th day, measures filtrate Zn, Cu concentration.
D) sludge concentration choice experiment: it is 32 ℃ of bacterial classification, high temperature that the S of 10g/L of take cultivates bacterium as substrate, 5% 3 time, initial pH is adjusted to 4 for condition, 0,0.5,1.0,2.0,3.0,5.0,8.0%7 concentration of sludge concentration is set, rotating speed 200r/min carries out heavy metal leaching cultivation, within the 4th day, measures filtrate Zn, Cu concentration.
Two, sludge manure is produced with heavy metal content and is identified:
A) mud is produced: with Xiamen area mud, (Zn, Cu, Cr, Ni exceed standard, Pb, Cd, As, the Hg mud within the scope of agricultural standards) be material, the result of study of selecting with above-mentioned four prescription methods take the S of 10g/L as substrate, cultivate bacterium for 15% 3 time as 32 ℃ of bacterial classification, high temperature, initial pH is adjusted to 4 for condition, rotating speed 200r/min carries out heavy metal leaching cultivation, within the 3rd day, measures the concentration of filtrate Zn, Cu, Pb, Cd, Cr, Ni, As, Hg 8 heavy metal species.
B) mensuration of 8 heavy metal species: the concentration of measuring 8 heavy metal species in the mud of leaching front and back.Zn, Cu, Pb, Cd, Cr, Ni adopt chloroazotic acid digestion, and VARIAN AA240FS atomic absorption spectrophotometer is measured.As, Hg adopt GB NY/T1978-2010 method to measure.Calculate the clearance of four kinds of heavy metals that exceed standard (Zn, Cu, Cr, Ni).
Result:
One, the selection result of method:
1, substrate kind and concentration are selected:
Result shows: three kinds of substrates with elemental sulfur to leach effect best, wherein, it is the highest that the amount of leaching of Zn is that the S of concentration 10g/L processes, and concentration 20g/L occupies second (be about 10g/L 98.70%), and the amount of leaching of Cu is contrary with Zn (concentration 10g/L be treated to 20g/L 98.05%) just in time.The more economical material benefit of 10g/L when heavy metal content is lower.
2, spawn culture number of times and consumption are selected:
Result shows: the amount of leaching of three each concentration processing of bacterium Zn, Cu is all apparently higher than a bacterium.What the Zn amount of leaching was the highest is that three bacteria concentrations 10% are processed, and 15% processing is taken second place; What the Cu amount of leaching was the highest is that three bacteria concentrations 15% are processed, and 10% processing is taken second place; It is the highest amount of leaching 92.09% that three bacteria concentrations 5% are processed the Zn amount of leaching, and Cu is 81.30%.Enough with three bacteria concentration 5% lignin-sludges for the mud that heavy metal concentration is lower.
3, leaching condition optimizing:
Result shows: 1. Zn, the amount of leaching of Cu two metals and the rate that leaches are all greater than 25 ℃ at 32 ℃.2. at two kinds of temperature, each peak that leaches of processing of Zn all appears at the 3rd day; What Cu amount of leaching at 32 ℃ was maximum also appears at the 3rd day, but at 25 ℃ the amount of leaching maximum appear at the 4th day, illustrate that high temperature accelerates Cu and leaches.3. adjust pH to the amount of leaching of Zn, Cu at 32 ℃ and to leach rate impact little, but lower pH at 25 ℃, accelerate Zn, Cu and leach rate, improve the amount of leaching.
4, sludge concentration is selected:
Result shows: it is the highest that Zn leaches rate when concentration 2%, and concentration 1% is taken second place; It is the highest that Cu leaches rate when concentration 3%, and concentration 2% is taken second place.Zn, Cu leach rate and decline rapidly when concentration is greater than 5%.
Two, heavy metal content qualification result up to standard in sludge manure:
Result shows: only with 2 day time, adopt in the Xiamen sludge manure that the leaching proper method of above research produces that the clearance of 4 kinds of heavy metal Zns that exceed standard, Cu, Cr, Ni is respectively 59.01%, 64.11%, 58.32%, 64.90%(table 1), the content of heavy metal Zn, Cu, Cr, Ni of exceeding standard in the mud all can be removed all heavy metals that exceed standard within the scope of 2.0 times of agricultural standards, sludge manure reaches agricultural standards after concentrated tune pH, directly as agricultural fertilizer.
Table 1: heavy metal content research up to standard in sludge manure
Claims (6)
1. remove fast a method for municipal sludge heavy metal, comprise the steps:
(1) take raw sludge as material, the S that adds 10-20g/L is substrate, and enrichment culture thiobacillus thiooxidant is complete to base consumption; The thiobacillus thiooxidant of gained of take is afterwards bacterial classification, adds another to and take the nutrient solution that S that raw sludge is material, 10-20g/L is substrate, carries out secondary enrichment culture thiobacillus thiooxidant; Enrichment culture is carried out at least three times, makes this bacterium liquid become the thiobacillus thiooxidant inoculation liquid of high density;
(2) concentration of pending mud is adjusted to 1-5%, uses the inoculation liquid inoculation of carrying disease germs of cultivating through at least three times, and inoculum size is pending sludge volume at least 5%, and the S that adds 10-20g/L is substrate, and pH value is adjusted to 4, temperature 25-32 ℃, leaching cultivation 2 days;
In mud, exceed standard the content of heavy metal within the scope of 2.0 times of agricultural standards, and the S of 10g/L of take in step (1) is substrate; In step (2), pending sludge concentration is adjusted to 1.0-3.0%, and the S of 10g/L of take is substrate; With the bacterium inoculation of three cultivations, inoculum size is that 15%, pH value is adjusted to 4,32 ℃ of temperature; Leaching is cultivated 2 days.
2. the method for a kind of quick removal municipal sludge heavy metal as claimed in claim 1, is characterized in that: also comprise step (3), the mud after processing leaves enough amounts and makes bacterial classification, directly adds next time pending mud to carry out production next time.
3. the method for a kind of quick removal municipal sludge heavy metal as claimed in claim 1, is characterized in that: described raw sludge derives from sewage work.
4. the method for a kind of quick removal municipal sludge heavy metal as claimed in claim 1, is characterized in that: step (1) enrichment culture number of times is 3 times.
5. the method for a kind of quick removal municipal sludge heavy metal as claimed in claim 1 or 2, is characterized in that: pH value is surveyed in being judged as that each enrichment culture finishes, if pH value lower than 2, is judged as substrate, substantially consumes completely.
6. the method for a kind of quick removal municipal sludge heavy metal as claimed in claim 1, is characterized in that: it is 150-250r/min that rotating speed is cultivated in the leaching of step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210475843.8A CN103086580B (en) | 2012-11-21 | 2012-11-21 | Method for quickly removing heavy metals in municipal sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210475843.8A CN103086580B (en) | 2012-11-21 | 2012-11-21 | Method for quickly removing heavy metals in municipal sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103086580A CN103086580A (en) | 2013-05-08 |
| CN103086580B true CN103086580B (en) | 2014-09-17 |
Family
ID=48199783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210475843.8A Active CN103086580B (en) | 2012-11-21 | 2012-11-21 | Method for quickly removing heavy metals in municipal sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103086580B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058565A (en) * | 2014-06-28 | 2014-09-24 | 南京理工大学 | Method for treating pickled sludge by using ferrous oxide thiobacillus |
| CN104478184B (en) * | 2014-11-28 | 2017-03-29 | 新疆天物生态科技股份有限公司 | A kind of method of municipal sludge clean utilization |
| CN105731749B (en) * | 2016-03-16 | 2018-10-30 | 福州大学 | A kind of method of bioleaching removal Heavy Metals in Sludge Cd |
| CN105731750B (en) * | 2016-03-16 | 2018-10-30 | 福州大学 | A kind of method of mixed-matrix bioleaching removal sludge heavy-metal |
| CN105776788B (en) * | 2016-04-19 | 2019-03-08 | 福州大学 | A kind of method that bioleaching removes heavy metal Cu in sludge from wastewater treatment plant |
| CN107244999A (en) * | 2017-05-24 | 2017-10-13 | 攀枝花市绿态美生物科技有限公司 | It is a kind of to remove microbial bacterial agent of removing heavy metals and its preparation method and application |
| CN108191183A (en) * | 2018-01-23 | 2018-06-22 | 广东工业大学 | The minimizing technology of heavy metals in city sewage sludge |
| CN110040926B (en) * | 2019-04-28 | 2021-07-09 | 四川大学 | Secondary bioleaching continuous process for efficiently removing heavy metal chromium in tannery sludge |
| CN114850195B (en) * | 2022-07-06 | 2022-09-23 | 矿冶科技集团有限公司 | Stabilizing agent for lead, arsenic and cadmium and method for treating multi-metal calcium-based sludge by using stabilizing agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818042A (en) * | 2006-03-09 | 2006-08-16 | 上海交通大学 | Method for removing mercury from fired coal by biological method |
| CN101475259A (en) * | 2008-10-31 | 2009-07-08 | 南开大学 | Method for removing heavy metal in excess activated sludge |
| CN101811812A (en) * | 2010-05-11 | 2010-08-25 | 沈阳建筑大学 | Technical method for removing heavy metal Ni from sludge by bioleaching |
-
2012
- 2012-11-21 CN CN201210475843.8A patent/CN103086580B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818042A (en) * | 2006-03-09 | 2006-08-16 | 上海交通大学 | Method for removing mercury from fired coal by biological method |
| CN101475259A (en) * | 2008-10-31 | 2009-07-08 | 南开大学 | Method for removing heavy metal in excess activated sludge |
| CN101811812A (en) * | 2010-05-11 | 2010-08-25 | 沈阳建筑大学 | Technical method for removing heavy metal Ni from sludge by bioleaching |
Non-Patent Citations (2)
| Title |
|---|
| 元素硫颗粒粒径对污泥重金属生物沥滤的影响;黄明等;《环境工程学报》;20100430;第4卷(第4期);第904-908页 * |
| 黄明等.元素硫颗粒粒径对污泥重金属生物沥滤的影响.《环境工程学报》.2010,第4卷(第4期),第904-908页. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103086580A (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103086580B (en) | Method for quickly removing heavy metals in municipal sludge | |
| CN103274575B (en) | Method for efficiently purifying municipal sludge heavy metals | |
| Travieso et al. | Batch mixed culture of Chlorella vulgaris using settled and diluted piggery waste | |
| Wang et al. | Removal of nutrients from undiluted anaerobically treated piggery wastewater by improved microalgae | |
| Bai et al. | Treatment of acid mine drainage by sulfate reducing bacteria with iron in bench scale runs | |
| Viruela et al. | Water resource recovery by means of microalgae cultivation in outdoor photobioreactors using the effluent from an anaerobic membrane bioreactor fed with pre-treated sewage | |
| CN103396950A (en) | Biogas slurry ecological purification method based on microalgae cultivation | |
| Fallowfield et al. | The photosynthetic treatment of pig slurry in temperate climatic conditions: a pilot-plant study | |
| CN110252801B (en) | Method for restoring cadmium-polluted soil | |
| CN104630295B (en) | A kind of method for handling city secondary waste water using immobilized microalgae and producing grease | |
| CN105660705A (en) | Composite sulfate reducing bacteria activity ecologic inhibitor and application thereof | |
| CN102250783B (en) | Enrichment culturing method for ammonia oxidizing bacteria | |
| CN105776788A (en) | Method for removing heavy metal Cu in sludge of urban sewage treatment plant in bioleaching mode | |
| Chan et al. | Nutrient removal (nitrogen and phosphorous) in secondary effluent from a wastewater treatment plant by microalgae | |
| Pan et al. | Evaluation of Galdieria sulphuraria for nitrogen removal and biomass production from raw landfill leachate | |
| Liu et al. | Conditions for continuous cultivation of Chlorella sorokiniana and nutrient removal from anaerobic digestion effluent of aquatic macrophytes | |
| Das et al. | Two stage treatability and biokinetic study of dairy wastewater using bacterial consortium and microalgae | |
| Ogundele et al. | Phycoremediation: Algae as an Effective Agent for Sustainable Remediation and Waste Water Treatment. | |
| CN100478285C (en) | Process of eliminating heavy metals from city sewage and sludge | |
| CN104496725A (en) | Organic bacterial manure for lead zinc ore contaminated soil remediation and preparation method of organic bacterial manure | |
| CN104478091B (en) | A kind of cultural method of high-efficiency ammonia nitrogen degradation composite bacteria | |
| Ali et al. | Wastewater treatment by using microalgae: Insights into fate, transport, and associated challenges | |
| CN104478184B (en) | A kind of method of municipal sludge clean utilization | |
| CN102424509A (en) | Novel method for processing heavy metal in sludge through bioleaching | |
| CN101386822A (en) | Special effect phosphate accumulating organisms and waste water processing method using thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210708 Address after: No. 169, Huanmei North Road, Guankou Town, Jimei District, Xiamen City, Fujian Province 361000 Patentee after: XIAMEN TASMAN BIO-TECH Co.,Ltd. Address before: 361012 No. 780, Jiahe Road, Xiamen, Fujian Patentee before: SUBTROPICAL CROPS INSTITUTE OF FUJIAN PROVINCE |
|
| TR01 | Transfer of patent right |