CN102020359A - Method for removing cadmium and dichlorophenol in wastewater simultaneously by utilizing P.chrysosporium - Google Patents
Method for removing cadmium and dichlorophenol in wastewater simultaneously by utilizing P.chrysosporium Download PDFInfo
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- CN102020359A CN102020359A CN 201010528030 CN201010528030A CN102020359A CN 102020359 A CN102020359 A CN 102020359A CN 201010528030 CN201010528030 CN 201010528030 CN 201010528030 A CN201010528030 A CN 201010528030A CN 102020359 A CN102020359 A CN 102020359A
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Abstract
The invention discloses a method for removing cadmium and dichlorophenol in wastewater simultaneously by utilizing P.chrysosporium, comprising the following steps: adding P.chrysosporium pellets into the wastewater containing cadmium and dichlorophenol, wherein the addition amount in each liter of wastewater is 0.3-0.5g in terms of the dry weight of the P.chrysosporium pellets; then, adjusting the pH value of the wastewater to 3.5-8.5, and performing an absorption degradation reaction at the constant temperature of 35-39 DEG C, wherein the revolving speed is controlled at 140-160rpm and the reaction time is not less than 36h during the reaction; and filtering the P.chrysosporium pellets after the reaction, thereby removing the cadmium and dichlorophenol in the wastewater simultaneously. The invention has the advantages of simple operation conditions, wide application range, no need of reformation and pretreatment for the adopted P.chrysosporium pellets, low cost, high microorganism utilization factor and the like, and is easy to implement.
Description
Technical field
The present invention relates to microorganism Application Areas and field of waste water treatment, relate in particular to the application of a kind of Phanerochaete chrysosporium in handling heavy metal and organic pollutant wastewater.
Background technology
At present, the harm of heavy metal and organic pollutant combined pollution has become a global problem in the environment.Wherein, the cadmium in the heavy metal has high toxicity, and people and vegeto-animal growing are had serious harm.So how removing cadmium pollution is subjected to showing great attention to of Study on Environmental Protection person.Cadmium wastewater is mainly from departments such as Electroplate Factory, dye industry, mining and metallurgy process, battery production, process hides, film manufacturing and automobile makings.In fact, in the cadmium wastewater of above-mentioned department discharging, also there is a series of organic pollutant usually, as chlorophenol, polycyclic aromatic hydrocarbons and trieline etc.Cadmium and with the common polluted lake of the organic pollutant of its coexistence, underground water, river and soil etc.; In addition, the toxicity of cadmium and the formed combined pollution system of organic pollutant usually than they separately the toxicity during Individual existence exceed several times.Therefore, cadmium and the organic pollutant of how removing simultaneously in the waste water seems especially important in wastewater treatment process.
Method in traditional processing cadmium wastewater mainly contains ion exchange method, chemical precipitation method, membrane separation process and active carbon adsorption etc., but these method ubiquity treatment effects bad, spend high shortcoming, especially when the content of cadmium in the waste water is low.
Bioremediation technology is an organic new technology in the processing heavy metal polluted waste water that gets up of environmental area developed recently or the degrading waste water.In handling heavy metal polluted waste water, the functional group of microorganism cells wall surface participates in the absorption to heavy metal, have that selectivity is strong, efficient is high, simple to operate, energy consumption is low and advantage such as economically feasible; And when handling organic polluting water, the organic pollutant in the microbial consumption waste water reaches the purpose that purifies water as self the metabolic energy and carbon source.Yet,, also microorganism is not applied to simultaneously the precedent of heavy metal and organic pollutant combined pollution waste water at present because microorganism is still indeterminate to the toxicity Response Mechanism and the removal feature of heavy metal and organic pollutant combined pollution.
Summary of the invention
Technical problem to be solved by this invention is: at the deficiency that prior art exists, provide that a kind of operational condition is simple, easy to implement, applied range, used bacterium ball need not to transform and pre-treatment, cost is low, the microorganism utilization ratio is high utilizes Phanerochaete chrysosporium to remove the method for cadmium and two chlorophenols in the waste water simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of method of utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously, said method comprising the steps of: in the waste water that contains cadmium and two chlorophenols, add Phanerochaete chrysosporium (P.chrysosporium) bacterium ball, addition in every liter of waste water is counted 0.3g～0.5g with Phanerochaete chrysosporium bacterium ball dry weight, the pH value of regulating waste water then is 3.5～8.5 (to be preferably 5.5～7.5, optimum is 6.5), under 35 ℃～39 ℃ constant temperatures, carry out the absorption degradation reaction, rotating speed is controlled at 140rpm～160rpm during reaction, reaction times is no less than 36h and (is preferably 84h～96h), filtering bacterium ball after reaction is finished is removed when finishing cadmium in the waste water and two chlorophenols.
In the technique scheme, described Phanerochaete chrysosporium bacterium ball preferably prepares by following steps: Phanerochaete chrysosporium spore powder is suspended in makes spore suspension in the sterilized water, again this spore suspension is inoculated in the liquid nutrient medium, shaking culture 60～84h (being preferably 72h) under 35 ℃～39 ℃ temperature, rotating speed is controlled at 140rpm～160rpm during cultivation, obtains Phanerochaete chrysosporium bacterium ball after the filtration.
In the technique scheme, the concentration of cadmium preferably is controlled at 2mg/L～15mg/L (most preferably be 2mg/L～5mg/L), the concentration of two chlorophenols preferably is controlled at 5mg/L～20mg/L and (most preferably is 10mg/L～20mg/L) in the described waste water in the described waste water.
Compared with prior art, the invention has the advantages that:
1, method of the present invention is directly will add in the trade effluent without transformation and pretreated Phanerochaete chrysosporium bacterium ball, and to remove cadmium and two chlorophenols in the waste water, entire treatment technology cost is lower, the simple relatively and enforcement easily of operational condition;
2, employed Phanerochaete chrysosporium bacterium ball is to be added in the liquid nutrient medium by the spore powder to be prepared from the inventive method, and preparation technology is simple, is easy to enlarged culturing, and is practical;
3, method of the present invention can realize the removal to cadmium in the waste water and two kinds of pollutents of two chlorophenols simultaneously, and overall clearance is higher relatively, the clearance of every kind of pollutent can remain on more than 50% substantially, the clearance of two chlorophenols can reach more than 98% under the optimum condition, and is significant to the improvement of the improvement of trade effluent and water surrounding.
Description of drawings
Fig. 1 is the microtexture synoptic diagram of Phanerochaete chrysosporium bacterium ball under the electronic scanning Electronic Speculum before the embodiment of the invention 1 reaction;
Fig. 2 is the microtexture synoptic diagram of the embodiment of the invention 1 reacted Phanerochaete chrysosporium bacterium ball under the electronic scanning Electronic Speculum;
Fig. 3 be the embodiment of the invention 4 Phanerochaete chrysosporium different treatment under the time to cadmium and 2, the removal effect synoptic diagram of 4-two chlorophenols.
Embodiment
Below with reference to Figure of description and specific embodiment the present invention is described in further details.
Embodiment 1:
A kind ofly of the present inventionly utilize Phanerochaete chrysosporium to remove cadmium and 2 in the waste water simultaneously, the method for 4-two chlorophenols may further comprise the steps:
1, produces Phanerochaete chrysosporium bacterium ball
With Phanerochaete chrysosporium BKM-F1767 (the USS type culture collection deposit number be ATCC 24725, preferably adopt this bacterial strain, but be not limited thereto) the spore powder scrapes from slant medium, makes spore suspension in sterilized water.Spore suspension is inoculated in the liquid nutrient medium (Kirk substratum) of Erlenmeyer flask, liquid nutrient medium 200mL is housed in the 500mL Erlenmeyer flask, in constant temperature vibration case, cultivates 37 ℃ of culture temperature, shaking speed is 150rpm, promptly obtains Phanerochaete chrysosporium bacterium ball behind the cultivation 72h.
2, to containing cadmium and 2, the waste water of 4-two chlorophenols is handled
Toward the cadmium starting point concentration is 5mg/L, 2, and 4-two chlorophenol starting point concentrations are to add the above-mentioned Phanerochaete chrysosporium bacterium ball that makes in the waste water of 20mg/L, and the addition in every liter of waste water is counted 0.4g with Phanerochaete chrysosporium bacterium ball dry weight, with NaOH (or HNO
3) the pH value of regulating waste water, be mixed with pH value variation range respectively and be six pending wastewater samples of 3.5～8.5, under 37 ℃ temperature condition, be put in the shaking table behind the oscillatory reaction 96h (shaking speed is 150rpm), bacterium ball after reaction is finished in the filtering water, finish to cadmium in the waste water and 2 processing of 4-two chlorophenols.
Measure each wastewater sample cadmium and 2 in the water after treatment respectively, 4-two chlorophenol residual volumes, measurement result sees Table 1.
Table 1: Phanerochaete chrysosporium under different pH condition to cadmium and 2, the removal efficient table of 4-two chlorophenols
As shown in Table 1, when the pH value changed between 5.5～7.5, Phanerochaete chrysosporium all had higher removal to two kinds of pollution substances, and was 6.5 o'clock in the pH value, cadmium and 2, and the clearance of 4-two chlorophenols all reaches maximum value, is respectively 62.41% and 83.93%.
In the experimentation, before getting absorption reaction respectively, the Phanerochaete chrysosporium after the absorption reaction, with distilled water flushing clean after, place-40 ℃ of following lyophilize 24h, the dried bacterium ball of gained places under the electronic scanning Electronic Speculum, observes its surperficial structural changes respectively as shown in Figure 1 and Figure 2.By Fig. 1, Fig. 2 as seen, after absorption reaction is finished Phanerochaete chrysosporium bacterium ball surface clearly mycelia lose, some functional groups form metal chelating zoariums on cadmium ion and the somatic cells wall, and reunite in Phanerochaete chrysosporium bacterium ball surface.
Embodiment 2:
A kind ofly of the present inventionly utilize Phanerochaete chrysosporium to remove cadmium and 2 in the waste water simultaneously, the method for 4-two chlorophenols may further comprise the steps:
1, produces Phanerochaete chrysosporium bacterium ball
This step is identical with the step 1 of embodiment 1.
2, to containing cadmium and 2, the waste water of 4-two chlorophenols is handled
Respectively toward 2, the starting point concentration of 4-two chlorophenols is that the starting point concentration of 20mg/L, cadmium is respectively in six pending wastewater samples of 2mg/L, 5mg/L, 10mg/L, 15mg/L, 20mg/L and 30mg/L and adds the above-mentioned Phanerochaete chrysosporium bacterium ball that makes, addition in every liter of waste water is counted 0.4g with Phanerochaete chrysosporium bacterium ball dry weight, regulating the pH value is 6.5, under 37 ℃ of temperature condition, rotating speed is oscillatory reaction 96h on the shaking table of 150rpm, bacterium ball after reaction is finished in the filtering water, finish to cadmium in the waste water and 2 processing of 4-two chlorophenols.Measure each wastewater sample cadmium and 2 in the water after treatment respectively, 4-two chlorophenol residual volumes, measurement result sees Table 2.
Table 2: Phanerochaete chrysosporium under the initial cadmium concentration of difference to every with 2, the removal efficient of 4-two chlorophenols
As shown in Table 2, in waste water 2,4-two chlorophenol concentration keep under the situation of certain numerical value, and cadmium concentration is low more to help Phanerochaete chrysosporium more to 2, the degraded of 4-two chlorophenols, but this has also just limited the removal to heavy metal cadmium in the waste water.Generally speaking, when the concentration of heavy metal cadmium remained on 2mg/L～15mg/L, metal was every with 2, and the overall clearance of 4-two chlorophenols is better relatively.To occur in the cadmium starting point concentration be 5mg/L place to maximum cadmium clearance in the present embodiment, and clearance reaches 63.61% at this moment.
Embodiment 3:
A kind ofly of the present inventionly utilize Phanerochaete chrysosporium to remove cadmium and 2 in the waste water simultaneously, the method for 4-two chlorophenols may further comprise the steps:
1, produces Phanerochaete chrysosporium bacterium ball
This step is identical with the step 1 of embodiment 1.
2, to containing cadmium and 2, the waste water of 4-two chlorophenols is handled
Starting point concentration toward cadmium is 2mg/L, 2 respectively, the starting point concentration of 4-two chlorophenols is respectively in six pending wastewater samples of 5mg/L, 10mg/L, 20mg/L, 40mg/L, 60mg/L and 100mg/L and adds the above-mentioned Phanerochaete chrysosporium bacterium ball that makes, addition in every liter of waste water is counted 0.4g with Phanerochaete chrysosporium bacterium ball dry weight, regulating the pH value is 6.5, under 37 ℃ of temperature condition, rotating speed is oscillatory reaction 96h on the shaking table of 150rpm, bacterium ball after reaction is finished in the filtering water, finish to cadmium in the waste water and 2 processing of 4-two chlorophenols.
Measure each wastewater sample cadmium and 2 in the water after treatment respectively, 4-two chlorophenol residual volumes, measurement result sees Table 3.
Table 3: Phanerochaete chrysosporium is different 2, under the 4-two chlorophenol concentration to cadmium and 2, the removal efficient table of 4-two chlorophenols
As shown in Table 3, along with 2, the increase of 4-two chlorophenol concentration, Phanerochaete chrysosporium is to 2, the treatment effect of 4-two chlorophenols presents one and increases earlier the trend that afterwards reduces, we analyze the major cause that this result occurs and are: when 2, the concentration of 4-two chlorophenols is crossed when hanging down, the energy undersupply of Phanerochaete chrysosporium can not make the biological activity of self maintain optimum regime, when 2, during the excessive concentration of 4-two chlorophenols, because 2,4-two chlorophenols itself have bio-toxicity, this can cause the survival rate of Phanerochaete chrysosporium lower equally.Generally speaking, 2, when the concentration of 4-two chlorophenols remained on 5mg/L～20mg/L, metal was every with 2, and the overall clearance of 4-two chlorophenols is better relatively.In the present embodiment, when 2, when 4-two chlorophenol concentration are 20mg/L, 2, the clearance of 4-two chlorophenols and cadmium reaches maximum value simultaneously.
Embodiment 4:
A kind of cadmium and 2 in the Phanerochaete chrysosporium removal waste water that utilizes of the present invention, the method for 4-two chlorophenols may further comprise the steps:
1, produces Phanerochaete chrysosporium bacterium ball
This step is identical with the step 1 of embodiment 1.
2, to containing cadmium and 2, the waste water of 4-two chlorophenols is handled
Starting point concentration toward cadmium is 5mg/L, 2, the starting point concentration of 4-two chlorophenols is to add the above-mentioned Phanerochaete chrysosporium bacterium ball that makes in the waste water of 20mg/L, addition in every liter of waste water is counted 0.4g with Phanerochaete chrysosporium bacterium ball dry weight, regulating the pH value is 6.5, under 37 ℃ of temperature condition, rotating speed is oscillatory reaction 108h on the shaking table of 150rpm, the bacterium ball after reaction is finished in the filtering water, finish to cadmium in the waste water and 2 processing of 4-two chlorophenols.
In reaction process, by different time samplings, measure cadmium and 2 wherein, 4-two chlorophenol residual volumes, the result is as shown in Figure 3.Different treatment is under the time, and Phanerochaete chrysosporium is to cadmium and 2, and the clearance of 4-two chlorophenols is as shown in table 4.
Table 4: Phanerochaete chrysosporium different treatment under the time to cadmium and 2, the removal counting rate meter of 4-two chlorophenols
Annotate: the mensuration of these data is not carried out in "-" expression in the table 4.
From Fig. 3 and table 4 as can be seen, Phanerochaete chrysosporium is tended to balance to the 36h that is adsorbed on of cadmium, and to 2, the degraded of 4-two chlorophenols needs 96h to tend to balance.When reaction tended to balance, Phanerochaete chrysosporium was to cadmium and 2, and 4-two chlorophenols can both present the good treatment effect.Thereby, in actual application, can be according to cadmium in the waste water and 2, the actual concentrations of 4-two chlorophenols is optionally determined the contact reacts time.
By embodiment 1～4 as can be known, adopt method of the present invention to handle and contain cadmium and 2,4-two chlorophenol combined pollution waste waters can make that the removal of two kinds of pollution substances all obtains effect preferably in the waste water.
Below only be preferred implementation of the present invention, protection scope of the present invention also not only is confined to the foregoing description, conceives the various process programs of no substantial differences all in protection scope of the present invention with the present invention.
Claims (6)
1. method of utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously, said method comprising the steps of: in the waste water that contains cadmium and two chlorophenols, add Phanerochaete chrysosporium (P.chrysosporium) bacterium ball, addition in every liter of waste water is counted 0.3g～0.5g with Phanerochaete chrysosporium bacterium ball dry weight, the pH value of regulating waste water then is 3.5～8.5, under 35 ℃～39 ℃ constant temperatures, carry out the absorption degradation reaction, rotating speed is controlled at 140rpm～160rpm during reaction, reaction times is no less than 36h, filtering bacterium ball after reaction is finished is removed when finishing cadmium in the waste water and two chlorophenols.
2. the method for utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously according to claim 1, it is characterized in that, described Phanerochaete chrysosporium bacterium ball is to prepare by following steps: Phanerochaete chrysosporium spore powder is suspended in makes spore suspension in the sterilized water, again this spore suspension is inoculated in the liquid nutrient medium, shaking culture 60h～84h under 35 ℃～39 ℃ temperature, rotating speed is controlled at 140rpm～160rpm during cultivation, obtains Phanerochaete chrysosporium bacterium ball after the filtration.
3. the method for utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously according to claim 1 and 2 is characterized in that: the pH value during described absorption degradation reaction is 5.5～7.5.
4. the method for utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously according to claim 1 and 2, it is characterized in that: the concentration of cadmium is controlled at 2mg/L～15mg/L in the described waste water, and the concentration of two chlorophenols is controlled at 5mg/L～20mg/L in the described waste water.
5. the method for utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously according to claim 4, it is characterized in that: the concentration of cadmium is controlled at 2mg/L～5mg/L in the described waste water, and the concentration of two chlorophenols is controlled at 10mg/L～20mg/L in the described waste water.
6. the method for utilizing Phanerochaete chrysosporium to remove cadmium and two chlorophenols in the waste water simultaneously according to claim 1 and 2, it is characterized in that: the described reaction times is 84h～96h.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586367A (en) * | 2012-02-17 | 2012-07-18 | 湖南大学 | Method for extracting Phanerochaete chrysosporium exocytosis protein under heavy metal induction |
| CN103058391A (en) * | 2013-01-25 | 2013-04-24 | 浙江工商大学 | Method for treating orange can production wastewater with Phanerochaete chrysosporium |
| CN103305443A (en) * | 2013-06-14 | 2013-09-18 | 宋保德 | Preparation and method for restoring ammonia nitrogen-containing industrial sewage |
| CN103496792A (en) * | 2013-09-30 | 2014-01-08 | 湖南大学 | Method for promoting panerochaete chrysosporium to degrade 2, 4-dichlorophen in wastewater through sodium hydrosulfide |
| CN103523932A (en) * | 2013-10-30 | 2014-01-22 | 湖南大学 | Application of biological combination photocatalytic composite degradation liquid system in phenolic waste water degradation |
| CN104313008A (en) * | 2014-10-15 | 2015-01-28 | 湖南大学 | Compound microbial preparation as well as preparation method and application thereof |
| CN105948396A (en) * | 2016-06-17 | 2016-09-21 | 湖南大学 | Method for simultaneously removing 2,4-dichlorophenol and nano silver in water |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586367A (en) * | 2012-02-17 | 2012-07-18 | 湖南大学 | Method for extracting Phanerochaete chrysosporium exocytosis protein under heavy metal induction |
| CN103058391A (en) * | 2013-01-25 | 2013-04-24 | 浙江工商大学 | Method for treating orange can production wastewater with Phanerochaete chrysosporium |
| CN103058391B (en) * | 2013-01-25 | 2014-07-09 | 浙江工商大学 | Method for treating orange can production wastewater with Phanerochaete chrysosporium |
| CN103305443A (en) * | 2013-06-14 | 2013-09-18 | 宋保德 | Preparation and method for restoring ammonia nitrogen-containing industrial sewage |
| CN103496792A (en) * | 2013-09-30 | 2014-01-08 | 湖南大学 | Method for promoting panerochaete chrysosporium to degrade 2, 4-dichlorophen in wastewater through sodium hydrosulfide |
| CN103496792B (en) * | 2013-09-30 | 2015-04-22 | 湖南大学 | Method for promoting panerochaete chrysosporium to degrade 2, 4-dichlorophen in wastewater through sodium hydrosulfide |
| CN103523932A (en) * | 2013-10-30 | 2014-01-22 | 湖南大学 | Application of biological combination photocatalytic composite degradation liquid system in phenolic waste water degradation |
| CN103523932B (en) * | 2013-10-30 | 2015-02-11 | 湖南大学 | Application of biological combination photocatalytic composite degradation liquid system in phenolic waste water degradation |
| CN104313008A (en) * | 2014-10-15 | 2015-01-28 | 湖南大学 | Compound microbial preparation as well as preparation method and application thereof |
| CN104313008B (en) * | 2014-10-15 | 2017-10-13 | 湖南大学 | Complex microorganism preparations and its preparation method and application |
| CN105948396A (en) * | 2016-06-17 | 2016-09-21 | 湖南大学 | Method for simultaneously removing 2,4-dichlorophenol and nano silver in water |
| CN105948396B (en) * | 2016-06-17 | 2018-09-18 | 湖南大学 | The method for removing 2,4- Dichlorophenols and nano silver in waste water simultaneously |
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