CN105502554B - The method for removing waste water Malachite Green using acer monoes fallen leaves biological adsorption agent - Google Patents
The method for removing waste water Malachite Green using acer monoes fallen leaves biological adsorption agent Download PDFInfo
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- CN105502554B CN105502554B CN201510835112.3A CN201510835112A CN105502554B CN 105502554 B CN105502554 B CN 105502554B CN 201510835112 A CN201510835112 A CN 201510835112A CN 105502554 B CN105502554 B CN 105502554B
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- Prior art keywords
- fallen leaves
- malachite green
- biological adsorption
- acer monoes
- adsorption agent
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Classifications
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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
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/44—Materials comprising a mixture of organic materials
- B01J2220/445—Materials comprising a mixture of organic materials comprising a mixture of polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The present invention relates to a kind of method for removing waste water Malachite Green using acer monoes fallen leaves biological adsorption agent, comprise the following steps：In the solution containing malachite green plus biological adsorption agent acer monoes is fallen leaves, and at 25 DEG C ~ 40 DEG C, after vibrating 2 ~ 240min with 170r/min, is centrifuged, is determined malachite green removal effect.The method that the present invention removes waste water Malachite Green with acer monoes fallen leaves biological adsorption agent is simple, cost is cheap, raw material is easy to get, processing time is fast, the duration of oscillation that best removal effect needs is only 5min, the clearance of highest malachite green dyestuff be 96.0%, acer monoes fallen leaves adsorbent adsorbance it is larger, 25 DEG C its to malachite green adsorptive value up to 42.5mg/g.
Description
Technical field
The invention belongs to technical field of waste water processing, more particularly to a kind of removed using acer monoes fallen leaves biological adsorption agent is given up
The method of water Malachite Green.
Background technology
Malachite green is triphenylmenthane type dye, be largely used in textile industry print and dye silk, leather, cotton, wool and
Cotton fibriia etc..Also bactericide can be used as in aquaculture, once be used for prevent and treat all kinds of aquatic livestocks saprolegniasis,
Branchiomycosis and ich etc., effect is notable.Malachite green belongs to high poison pollutant for mammalian cell, and can cause small
Mouse kidney neoplasms, cause the reproductive problems of the biology such as rabbit and fish.It has certain high toxicity and high residue, and may pass through food
Chain is detrimental to health, and causes humans and animals internal organs and tissue damage.So removing malachite green before waste water from dyestuff discharges, it is
It is very necessary.
Existing many methods are used for the removal of malachite green dye waste water pollutant, such as flocculation, precipitation, oxygen both at home and abroad at present
Change, photocatalysis, absorption, ion exchange, UF membrane etc..Wherein absorption method is one of economic in the last few years and effective method,
Have the advantages that cheap, technique is simple, easy to operate, occupation of land is small.Cheap, high-efficiency adsorbent processing malachite green is found to give up
Water is the technical barrier that this area is thirsted for solving always.
Acer monoes belongs to deciduous tree, widely distributed, production northeast, North China and Yangtze river basin each province.It is the north important autumn
Its foliage tree kind, it is commonly used for afforestation garden tree, shade tree and scenic forest seeds.Fall foliage largely produces, in city rubbish
Account in rubbish and greatly form.
The content of the invention
It is an object of the invention to problem be present for above-mentioned, there is provided a kind of processing method of malachite green dye waste water and
The Application way of acer monoes fallen leaves, the present invention prepare adsorbent using acer monoes fallen leaves, and for handling the malachite in waste water
It is green, there is the features such as cost is cheap, and method is simple, processing time is short, efficiency high.
In order to solve the above technical problems, what the present invention was realized in：
A kind of method for removing waste water Malachite Green using acer monoes fallen leaves biological adsorption agent, it comprises the following steps：
Biological adsorption agent acer monoes fallen leaves, biological adsorption are added in the solution containing 80~180mg/L malachite greens and pH1.6~11.0
Agent acer monoes fallen leaves dosage is 1~8g/L, at 25 DEG C~40 DEG C, after vibrating 2~240min with 170r/min, is centrifuged,
Determine malachite green removal effect.
As a kind of preferred scheme, after the present invention adds biological adsorption agent acer monoes fallen leaves, continue and add NaCl；NaCl adds
It is 0~0.24mol/L to enter amount.
Further, biological adsorption agent acer monoes fallen leaves of the present invention are prepared according to following steps：Autumn acer monoes is fallen leaves into
Row is collected；After cleaning fallen leaves with running water, then acer monoes fallen leaves are washed with deionized；It is subsequently placed in 70 DEG C of oven for drying；Dry
Acer monoes fallen leaves after dry use mechanical crushing, and are sized to 60 mesh with standard screen, produce five jiaos of purpose product biological adsorption agent
Maple is fallen leaves.
Further, duration of oscillation of the present invention is 5min.
Further, the centrifugal rotational speed in centrifugation of the present invention is 4000r/min, centrifugation time 10min.
Further, malachite green pH of the present invention can be 2.5.
Further, biological adsorption agent acer monoes fallen leaves dosage of the present invention is 2-4g/L.
Further, the present invention falls leaves 4g/L biological adsorption agents acer monoes and 50mL malachite green solutions, in temperature 25
At DEG C -40 DEG C, constant temperature 20min, mixing vibration.
Further, the present invention takes 4g/L biological adsorption agents acer monoes fallen leaves to be added in 50mL malachite green solutions,
At 25 DEG C of temperature, NaCl dosages are 0.16mol/L-0.24mol/L.
Further, biological adsorption agent acer monoes fallen leaves dosage 3g/L of the present invention；NaCl dosages 0.08mol/
L。
Compared with prior art, the advantage of the invention is that：With ion-exchange, the precipitation method, light degradation method, redox
Method etc. is compared, and the method that the present invention removes waste water Malachite Green with acer monoes fallen leaves biological adsorption agent is simple, and cost is cheap, former
Material is easy to get, and processing time is fast, and the duration of oscillation that best removal effect needs is only 5min, the clearance of highest malachite green dyestuff
Up to 96.0%, acer monoes fallen leaves adsorbent adsorbance is larger, 25 DEG C its to malachite green adsorbance up to 42.5mg/g.Through dye
Biological adsorption agent acer monoes fallen leaves after material absorption, can use desorption and regeneration, realize the recovery of dyestuff and the circular regeneration of adsorbent
Utilize, do not produce secondary pollution problem.
In addition, plant defoliation source is wide, it is convenient to collect, and has and naturally utilizes advantage.It is useless using urban greenery plantses fallen leaves
Gurry has good application prospect as biological adsorption agent processing waste water.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description.Protection scope of the present invention not only office
It is limited to the statement of following content.
Fig. 1 is acer monoes fallen leaves under condition of different pH in the embodiment of the present invention 1 to the adsorbance schematic diagram of malachite green；
Fig. 2 a, Fig. 2 b are absorption of the acer monoes fallen leaves to malachite green under the conditions of different time in the embodiment of the present invention 2
Measure schematic diagram；
Fig. 3 is that different acer monoes fallen leaves dosages are illustrated to the clearance and adsorbance of malachite green in the embodiment of the present invention 3
Figure；
Fig. 4 is that malachite green initial concentration influences on its clearance and adsorbance under different temperatures in the embodiment of the present invention 4
Schematic diagram；
Fig. 5 is that acer monoes fallen leaves show malachite green clearance and adsorbance under different salinity in the embodiment of the present invention 5
It is intended to.
Embodiment
Embodiment 1
Biological adsorption agent of the present invention is using acer monoes fallen leaves as raw material.Take 200g autumn acer monoes to fall leaves and running water is used in basin
Cleaning, 5 times repeatedly, until after cleaning fluid is clarified without muddy thing, deionized water cleaning and filtering are added, 3 times repeatedly, obtains wet five
Angle maple fallen leaves.Uniformly it is put in enamel pallet, is placed in air dry oven, temperature adjustment is 70 DEG C, dries 24h to constant weight, obtains
Fallen leaves to dry acer monoes.Powdered, 60 mesh sieves excessively, obtained biological adsorption agent acer monoes of the present invention are ground into using high speed disintegrator
Fallen leaves.
4g/L biological adsorption agent acer monoes fallen leaves manufactured in the present embodiment are taken to add the difference that 9 groups of concentration are 120mg/L first
In the 50mL malachite green solutions of beginning pH value, after vibrating 5min in constant temperature air bath oscillator with 170r/min at 25 DEG C,
4000r/min centrifuges 10min.
The initial pH of different solutions to malachite green adsorption effect as shown in figure 1, pH is increased to 2.5 by 1.6, adsorbance from
24.9mg/g increases to 27.9mg/g, and pH rises to 11.0 from 2.5, and adsorbance then reduces with pH increase, when pH is 11.0,
Adsorbance is down to 20.6mg/g.In the range of pH value 6.5~7.5, adsorbance is in 25.3mg/g or so.
Embodiment 2
The malachite green in waste water is removed using obtained biological adsorption agent acer monoes fallen leaves in the embodiment of the present invention 1, and it is right
The adsorbance of biological adsorption agent is contrasted under the conditions of different time.
Take 4g/L biological adsorption agent acer monoes manufactured in the present embodiment fallen leaves add initial concentration be respectively 80mg/L,
100mg/L and 120mg/L pH6.5-7.5 malachite green solution 50mL, at 25 DEG C in constant temperature air bath oscillator with
After 170r/min vibration different times 2min~240min, 4000r/min centrifuges 10min.
Different time biological adsorption agent acer monoes fallen leaves are as shown in Figure 2 to the adsorption effect of malachite green.It can be seen by Fig. 2
Go out, absorption of the acer monoes fallen leaves to malachite green is a quick adsorption process.In duration of oscillation 2min, to 80mg/L,
The adsorbance of 100mg/L and 120mg/L malachite greens respectively reaches 15.9mg/g, 19.7mg/g and 20.3mg/g；Over time
Increase, adsorbance has certain change, reaches maximal absorptive capacity 18.0mg/g, 22.3mg/ in 4min, 5min and 5min respectively
G and 27.7mg/g.Increased over time after reaching maximal absorptive capacity, adsorbance reduces again, and basic change is smaller after 30min.
It may be desorbed again in view of time increase, so in the present invention, duration of oscillation is preferably 5min.
Embodiment 3
The malachite green in waste water is removed using obtained biological adsorption agent acer monoes fallen leaves in the embodiment of the present invention 1, and it is right
The not clearance of same amount biological adsorption agent acer monoes fallen leaves and adsorbance is added to be contrasted.
Take made from 1~8g/L the present embodiment biological adsorption agent acer monoes fallen leaves to be added to 8 groups of initial concentrations respectively to be
In 120mg/L, pH6.5-7.5 50mL sparrow malachite green solution, vibrated at 25 DEG C in constant temperature air bath oscillator with 170r/min
After 5min, 4000r/min centrifuges 10min.
Different biological adsorption agent acer monoes fallen leaves dosages are as shown in Figure 3 to the adsorption effect of malachite green.As can be seen that
With the dosage increase of acer monoes fallen leaves biological adsorption agent, malachite green dyestuff clearance, which is presented, first increases the trend reduced afterwards,
Adsorbance is on a declining curve.When acer monoes of the present invention fallen leaves biological adsorption agent dosage is 1g/L, malachite green clearance is
In the range of 70.9%, 2~4g/L of dosage, clearance is more than 92.0%, and after dosage 5-8g/L, clearance is by 88.3%
80.4% is dropped to, so in the present invention, biological adsorption agent acer monoes fallen leaves dosage is preferably 2-4g/L.
Embodiment 4
Using the malachite green being made in embodiment 1 in biological adsorption agent acer monoes fallen leaves removal waste water, and biology is inhaled
Attached dose of acer monoes fallen leaves contrast to the adsorbance of different initial concentration malachite greens.
Take respectively 4g/L biological adsorption agent acer monoes manufactured in the present embodiment fallen leaves and initial concentration 80mg/L-180mg/L,
The pH6.5-7.5 50mL malachite green solutions constant temperature in 25 DEG C, 30 DEG C, 35 DEG C and 40 DEG C constant temperature air bath oscillators respectively
After 20min, acer monoes fallen leaves are added in malachite green solution, after vibrating 5min with 170r/min, 4000r/min centrifugations point
From 10min.
It is as shown in Figure 4 to influence result on its clearance and adsorbance for malachite green initial concentration under different temperatures.Can by Fig. 4
Know, biological adsorption agent acer monoes fall leaves to the adsorption rate and adsorbance of malachite green with the increase of initial malachite green concentration and
Increase.Temperature is smaller for the Adsorption Effect of malachite green.In the present invention, when temperature is 25 DEG C, acer monoes fallen leaves biology
Adsorbent can reach 42.5mg/g to the adsorbance of malachite green.
Embodiment 5
The malachite green in waste water is removed using obtained biological adsorption agent acer monoes fallen leaves in the embodiment of the present invention 1, and it is right
After adding not same amount NaCl solution, biological adsorption agent acer monoes fallen leaves are contrasted to the adsorbance of malachite green.
Take made from 4g/L the present embodiment 1 biological adsorption agent acer monoes fallen leaves to be added to 8 groups of initial concentrations respectively to be
120mg/L, pH6.5-7.5 50mL malachite green solutions, NaCl is added in each solution, make its molal weight concentration be respectively 0,
0.02mol/L, 0.04mol/L, 0.06mol/L, 0.1mol/L, 0.16mol/L, 0.2mol/L, 0.24mol/L, at 25 DEG C
After vibrating 5min in constant temperature air bath oscillator with 170r/min, 4000r/min centrifuges 10min.NaCl concentration is to peacock
The influence of malachite green removal effect is as shown in Figure 5.As seen from Figure 5, with the increase that NaCl concentration is added in solution, malachite
Green adsorption rate and adsorbance gradually increases, and in NaCl dosage 0~0.24mol/L scopes, adsorption rate increases to from 77.8%
96.0%.Show that adding NaCl is beneficial to the absorption that biological adsorption agent acer monoes is fallen leaves to malachite green.NaCl dosages exceed
After 0.16mol/L, adsorption rate and adsorbance change are smaller, balance are basically reached, so NaCl dosages are preferably 0.16mol/
L-0.24mol/L。
Embodiment 6
The malachite green in waste water, and root are removed using obtained biological adsorption agent acer monoes fallen leaves in the embodiment of the present invention 1
According to the result of single factor test serial experiment in embodiment 1-5, malachite green adsorption rate is considered, it is determined that adsorption effect is had a great influence
Factor is adsorption time, adsorbent dosage, pH value and salinity, according to experiment of single factor result, determines each controlling elements water
It is flat, using the L of four factor three horizontal (table 1)9(34) orthogonal arrage carry out orthogonal test.Taken by Orthogonal Experiment and Design scheme (table 2)
Sample, fixed malachite green initial concentration 120mg/L, pH2.5~7.0,25 DEG C of temperature, oscillator rotating speed 170r/min, vibration one
4000r/min centrifuges 10min after fixing time.
Analyzed by orthogonal experiments, pH value, NaCl concentration have a significant impact to malachite green adsorption rate.Influence peacock
The primary and secondary order of malachite green adsorption rate index factor is NaCl concentration (D)>PH value (C)>Acer monoes fallen leaves dosage (A)>During vibration
Between (B).Optimal case is A2B1C3D2；That is biological adsorption agent acer monoes fallen leaves dosage 3g/L, duration of oscillation 5min, pH7.0,
NaCl dosages 0.08mol/L；The experimental verification clearance that biological adsorption agent acer monoes is fallen leaves to malachite green on this condition
Up to 95.2%, higher than the malachite green adsorption rate under each experimental condition in table 2.
It is to be understood that above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to this
Technical scheme described by inventive embodiments, it will be understood by those within the art that, still the present invention can be carried out
Modification or equivalent substitution, to reach identical technique effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
The orthogonal test factor level table of table 1
The orthogonal test scheme of table 2 and result
Claims (10)
- A kind of 1. method for removing waste water Malachite Green using acer monoes fallen leaves biological adsorption agent, it is characterised in that including such as Lower step：Biological adsorption agent acer monoes fallen leaves, biology are added in the solution containing 80 ~ 180mg/L malachite greens and pH6.5-7.5 Adsorbent acer monoes fallen leaves dosage is 1 ~ 8g/L, at 25 ~ 40 DEG C, after vibrating 2 ~ 240min with 170r/min, is centrifuged, really Determine malachite green removal effect.
- 2. according to the method for utilizing acer monoes fallen leaves biological adsorption agent to remove waste water Malachite Green described in claim 1, it is special Sign is：After adding biological adsorption agent acer monoes fallen leaves, continue and add NaCl；NaCl additions are 0 ~ 0.24mol/L.
- 3. according to claim 1 or 2 it is described using acer monoes fallen leaves biological adsorption agent remove waste water Malachite Green method, its It is characterised by：Biological adsorption agent acer monoes fallen leaves are prepared according to following steps：Autumn acer monoes fallen leaves are collected；Use running water After cleaning fallen leaves, then acer monoes fallen leaves are washed with deionized；It is subsequently placed in 70 DEG C of oven for drying；Acer monoes fallen leaves after drying 60 mesh are sized to using mechanical crushing, and with standard screen, produce purpose product biological adsorption agent acer monoes fallen leaves.
- 4. according to claim 1 or 2 it is described using acer monoes fallen leaves biological adsorption agent remove waste water Malachite Green method, its It is characterised by：The duration of oscillation is 5min.
- 5. according to claim 1 or 2 it is described using acer monoes fallen leaves biological adsorption agent remove waste water Malachite Green method, its It is characterised by：Centrifugal rotational speed in the centrifugation is 4000r/min, centrifugation time 10min.
- 6. according to claim 1 or 2 it is described using acer monoes fallen leaves biological adsorption agent remove waste water Malachite Green method, its It is characterised by：The pH value of solution of the malachite green is 7.
- 7. any according to claim 1 or 2 described removes waste water Malachite Green using acer monoes fallen leaves biological adsorption agent Method, it is characterised in that：The biological adsorption agent acer monoes fallen leaves dosage is 2-4g/L.
- 8. according to the method for utilizing acer monoes fallen leaves biological adsorption agent to remove waste water Malachite Green described in claim 1, it is special Sign is：By 4g/L biological adsorption agents acer monoes fallen leaves and 50mL malachite green solutions, at 25 DEG C -40 DEG C of temperature, constant temperature 20min, mixing vibration.
- 9. according to the method for utilizing acer monoes fallen leaves biological adsorption agent to remove waste water Malachite Green described in claim 2, it is special Sign is：4g/L biological adsorption agents acer monoes fallen leaves are taken to be added in 50mL malachite green solutions, at 25 DEG C of temperature, NaCl is thrown Dosage is 0.16 mol/L -0.24mol/L.
- 10. any according to claim 2 or 9 described removes waste water Malachite Green using acer monoes fallen leaves biological adsorption agent Method, it is characterised in that：The biological adsorption agent acer monoes fallen leaves dosage 3g/L；Duration of oscillation 5min；NaCl dosages 0.08mol/L。
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|---|---|---|---|---|
| SU912683A1 (en) * | 1980-01-07 | 1982-03-15 | Иркутский государственный университет им. А.А.Жданова | Method for purifying effluents from metals |
| CN101733078A (en) * | 2010-01-14 | 2010-06-16 | 上海交通大学 | Method for preparing phosphorous-removing adsorbent by using cane shoots leaves |
| CN101745368A (en) * | 2010-01-22 | 2010-06-23 | 中国科学院南京土壤研究所 | Preparation method of ammonia nitrogen adsorbent by utilizing southern magnolia and application of adsorbent |
| CN102786162A (en) * | 2012-08-27 | 2012-11-21 | 杭州普丽美地生物科技有限公司 | Method for treating tea-leaf intensive processing industry sewage with sawdust |
| CN103357381A (en) * | 2013-07-18 | 2013-10-23 | 华南理工大学 | Method for preparation of bio-adsorbent by modifying tea residue and application of bio-adsorbent |
-
2015
- 2015-11-26 CN CN201510835112.3A patent/CN105502554B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU912683A1 (en) * | 1980-01-07 | 1982-03-15 | Иркутский государственный университет им. А.А.Жданова | Method for purifying effluents from metals |
| CN101733078A (en) * | 2010-01-14 | 2010-06-16 | 上海交通大学 | Method for preparing phosphorous-removing adsorbent by using cane shoots leaves |
| CN101745368A (en) * | 2010-01-22 | 2010-06-23 | 中国科学院南京土壤研究所 | Preparation method of ammonia nitrogen adsorbent by utilizing southern magnolia and application of adsorbent |
| CN102786162A (en) * | 2012-08-27 | 2012-11-21 | 杭州普丽美地生物科技有限公司 | Method for treating tea-leaf intensive processing industry sewage with sawdust |
| CN103357381A (en) * | 2013-07-18 | 2013-10-23 | 华南理工大学 | Method for preparation of bio-adsorbent by modifying tea residue and application of bio-adsorbent |
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