CN109364879A - The method that support type sludge based biomass charcoal removes Cu (II) in sludge - Google Patents
The method that support type sludge based biomass charcoal removes Cu (II) in sludge Download PDFInfo
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- CN109364879A CN109364879A CN201811531006.6A CN201811531006A CN109364879A CN 109364879 A CN109364879 A CN 109364879A CN 201811531006 A CN201811531006 A CN 201811531006A CN 109364879 A CN109364879 A CN 109364879A
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- sludge
- support type
- reaction kettle
- based biomass
- biomass
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- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The method of Cu (II) belongs to water-treatment technology field in support type sludge based biomass charcoal removal sludge.Returned sludge is subjected to centrifugal dehydration, the dewatered returned sludge of 450mL-500mL is taken to be placed in (the NH in autoclave and adding 20-30mmol4)2Fe(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 2-3 minute into reaction kettle, makes to form oxygen-free environment in autoclave body, react 2.5-4.5 hour at 180-210 DEG C, centrifugation and wash with distilled water for several times, and drying to constant weight, and grinding simultaneously 70 meshes of mistake are placed on spare in drier；It is added in Cu (II) solution of initial concentration 5-30mg/L, 2-4h is adsorbed under the conditions of 10-30 DEG C, centrifugation makes to be separated by solid-liquid separation.The present invention has higher removal rate to Cu (II), easy to operate, low in cost, realizes the resource utilization and water environment protection of sludge.
Description
Technical field
The invention belongs to water-treatment technology fields, are specifically related to a kind of utilization support type sludge based biomass carbon adsorbent
The method for removing Cu (II) in sludge.
Background technique
As Urbanization in China is accelerated, sewage load is quicklyd increase, and the processing disposition of sludge becomes a great problem.
Currently, the main methods of sludge are landfills and burn, landfill occupies tract resource and is possible to meeting polluted underground water,
Burning can then generate air pollution and cause energy waste.In addition to this it still without good processing mode, therefore urgently researches and develops
New technology, safe disposal and resource utilization of sludge.Heavy metal is one of most important pollutant in environment, with industrialized
Fast development, discharge amount are increasing.
Wherein copper (Cu) is a kind of most common heavy metal, it is used not only for industrial production, also often as micro member
Element makes an addition to feed, for promoting growth of animal and improving efficiency of feed utilization.When copper concentration is excessively high, underground and surface water will cause
Pollution will lead to the accumulation of copper in the soil and the migration from soil to food using the irrigation of such water, and then to biology
Circle conveying.Find in the agricultural land soil of chronic administration muck: the content of beary metal such as Cu, Zn, As are significantly higher than unused muck
Soil.Heavy metal ion is a kind of stabilization and lasting environmental contaminants, they cannot be decomposed by the microorganisms, easily in vivo
Enrichment, it is difficult to biochemical treatment.
Cu (II) removal at present mainly has physico-chemical process, chemical method and biochemical method, and obtains certain effect, however with top
In place of method all Shortcomings or removal effect is bad or inconvenient or not strong etc. to Cu (II) adaptability.Therefore one is found
The method of this pollutant of the removal of kind green high-efficient is necessary.Adsorption technology is with cost is relatively low, removal rate is higher, without pair
The advantages that product generates, it is considered to be go the effective way of heavy metal in water removal.
Biomass carbon (Biochar) be by biomass raw material under conditions of anaerobism or anoxic, generated through pyrolysis charring
A kind of height aromatization slightly solubility solid matter, predominantly the derivative of carbonyl, acid and acid, furans, pyrans and anhydrousugar,
The organic carbon mix of the complicated components such as the derivative of phenol, alkane and olefinic hydro carbons.Biomass carbon has extremely complex micro-
Pore structure, specific surface area is very big, and Nature comparison is stablized, and many active groups are contained on surface, are highly suitable as adsorbent and answer
For aqueous pollution remediation.Many studies have shown that biomass carbon is a kind of inexpensive, high-efficiency adsorbent, for absorbing
Multiple pollutant matter.Biomass carbon has the spies such as flourishing pore structure, high specific surface area and surface functional group abundant
Point, this makes biomass carbon have wide practical use in biological adsorption field.
In this patent, the effective ways using support type sludge based biomass carbon adsorbent removal Cu (II) are provided,
Cu (II) pollution on the environment can not only be mitigated, can also be turned waste into wealth, the alleviation excessive problem of sludge, the treatment of wastes with processes of wastes against one another,
Realize effective use and the water environment protection of sludge resource.
Summary of the invention
The object of the present invention is to provide a kind of sides using Cu (II) in biomass carbon Adsorption sludge of high-efficiency environment friendly
Method.
The method that support type sludge based biomass charcoal removes Cu (II) in sludge, which comprises the following steps:
(1) preparation of support type sludge based biomass charcoal: returned sludge is subjected to centrifugal dehydration, moisture content is after dehydration
90%-92% takes the dewatered returned sludge of 450mL-500mL to be placed in the (NH in autoclave and adding 20-30mmol4)2Fe(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 2-3 minutes into reaction kettle, makes to form oxygen-free environment in autoclave body, 180-
It reacts 2.5-4.5 hours generation iron support type sludge based biomass charcoals at 210 DEG C, is centrifuged and wash with distilled water for several times, dry
To constant weight, 70 meshes are ground and crossed, are placed on spare in drier；
(2) biomass carbon is added in Cu (II) solution of initial concentration 5-30mg/L, pH=5 is adjusted, at 10-30 DEG C
Under the conditions of adsorb 2-4h, centrifugation makes to be separated by solid-liquid separation, and biomass carbon adsorbent dosage is 0.6-1.4g/L.
Further, temperature is 180 DEG C, time 3h in reaction kettle in step (1), and drying temperature is 105 DEG C.
Further, adsorption temp is 20 DEG C, adsorption time 3h in step (2), and charcoal dosage is 0.8g/L.
The beneficial effects of the present invention are embodied in:
(1) biomass carbon adsorbent of the invention has preferable absorption property, has a higher removal rate to Cu (II), and 20
DEG C when Cu (II) concentration is 20mg/L, charcoal is maximum to the adsorbance of Cu (II), has reached 6.43mg/g；As Cu (II)
When concentration is 5mg/L, highest removal rate reaches 88%.
(2) compared with the methods of chemical precipitation, UF membrane, redox, biodegrade, of the invention utilizes biomass carbon
Method in Adsorption sludge Cu (II), it is easy to operate, it is low in cost, it is without secondary pollution, there is industrialization prospect.
(3) support type sludge based biomass carbon adsorbent prepared by the present invention avoids sludge and accumulates at excessive bring
Problem is managed, carrying capacity of environment is alleviated, realizes the resource utilization and water environment protection of sludge.
Detailed description of the invention
Fig. 1 is influence of Cu (II) initial concentration to Cu (II) adsorption effect.
Fig. 2 is adsorbent dosage to the influence to Cu (II) adsorption effect.
Fig. 3 is influence of the pH value to Cu (II) adsorption effect.
Fig. 4 is the XRD spectrum of support type charcoal.
Specific embodiment
Example one: the returned sludge fetched is subjected to centrifugal dehydration, it is anti-that the returned sludge after taking 500mL to be centrifuged is placed in high pressure
Answer in kettle and add the (NH of 20mmol4)2Fe(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 3 minutes, reacts at 200 DEG C
3.5 hours generation iron support type sludge based biomass charcoals, are centrifuged and wash with distilled water for several times, and drying to constant weight at 105 DEG C, grinds
It grinds and crosses the drying of 70 meshes.It is named as No. 1 biomass carbon.
No. 1 biomass carbon adsorbent is taken to be added to Cu (II) solution that initial concentration is 5,10,15,20,25,30mol/L
In, adsorbent dosage is 1g/L, 20 DEG C, adjusts pH=5 with the NaOH and HCl of 0.1mol/L, concussion absorption 2h, centrifugation makes solid
Liquid separation.Liquid is collected into waste liquid barrel, is uniformly processed.
Influence of Cu (II) initial concentration to Cu (II) removal effect is as shown in Figure 1.
Example two: the returned sludge fetched is subjected to centrifugal dehydration, it is anti-that the returned sludge after taking 500mL to be centrifuged is placed in high pressure
Answer in kettle and add the (NH of 27.5mmol4)2Fe(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 3 minutes, anti-at 180 DEG C
It answers 2.5 hours generation iron support type sludge based biomass charcoals, is centrifuged and wash with distilled water for several times, drying to constant weight at 105 DEG C,
It grinds and crosses the drying of 70 meshes.It is named as No. 2 biomass carbons.
No. 2 biomass carbon adsorbents are taken to be added in Cu (II) solution that initial concentration is 20mol/L, adsorbent dosage
For 0.6,0.8,1.0,1.2,1.4g/L, 20 DEG C, pH=5, concussion absorption 2h, centrifugation are adjusted with the NaOH and HCl of 0.1mol/L
Make to be separated by solid-liquid separation.Liquid is collected into waste liquid barrel, is uniformly processed.
Adsorbent dosage is as shown in Figure 2 to the influence to Cu (II) adsorption effect.
Example three: the returned sludge fetched is subjected to centrifugal dehydration, it is anti-that the returned sludge after taking 450mL to be centrifuged is placed in high pressure
Answer in kettle and add the (NH of 25mmol4)2Fe(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 3 minutes, reacts at 180 DEG C
4.5 hours generation iron support type sludge based biomass charcoals, are centrifuged and wash with distilled water for several times, and drying to constant weight at 105 DEG C, grinds
It grinds and crosses the drying of 70 meshes.
No. 3 biomass carbon adsorbents are taken to be added in Cu (II) solution that initial concentration is 20mol/L, adsorbent dosage
For 0.8g/L, 20 DEG C, pH=2,3,4,5,6, concussion absorption 2h are adjusted with the NaOH and HCl of 0.1mol/L, centrifugation makes solid-liquid point
From.Liquid is collected into waste liquid barrel, is uniformly processed.
Influence of the pH value to Cu (II) adsorption effect is as shown in Figure 3.
Example 4: the returned sludge fetched is subjected to centrifugal dehydration, it is anti-that the returned sludge after taking 550mL to be centrifuged is placed in high pressure
Answer in kettle and add the (NH of 30mmol4)2Fe(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 3 minutes, reacts at 210 DEG C
3 hours generation iron support type sludge based biomass charcoals, are centrifuged and wash with distilled water for several times, and drying to constant weight at 105 DEG C, grinds
And it is dry to cross 70 meshes.It is named as No. 4 biomass carbons.
No. 4 biomass carbons are taken to do XRD test analysis, XRD spectrum is as shown in figure 4, broad peak table between 16 ° and 22 °
Show amorphous carbon, and the peak at 2 θ=26.624 ° represents graphite crystal.At 26.725 °, 35.161 °, 39.219 °
Peak is Fe2O3, the 31.130 ° and 33.816 ° peaks for FeO (OH).The appearance at these peaks indicates that iron is successfully supported on biomass carbon
On, be conducive to absorption of the adsorbent to pollutant.
Claims (3)
1. the method that support type sludge based biomass charcoal removes Cu (II) in sludge, which comprises the following steps:
(1) preparation of support type sludge based biomass charcoal: carrying out centrifugal dehydration for returned sludge, and moisture content is 90%- after dehydration
92%, take the dewatered returned sludge of 450mL-500mL to be placed in the (NH in autoclave and adding 20-30mmol4)2Fe
(SO4)2·6H2O covers reaction kettle cover, leads to nitrogen 2-3 minutes into reaction kettle, makes to form oxygen-free environment in autoclave body, 180-210
It reacts 2.5-4.5 hours generation iron support type sludge based biomass charcoals at DEG C, is centrifuged and wash with distilled water for several times, be dried to perseverance
Weight grinds and crosses 70 meshes, is placed on spare in drier；
(2) biomass carbon is added in Cu (II) solution of initial concentration 5-30mg/L, pH=5 is adjusted, in 10-30 DEG C of condition
Lower absorption 2-4h, centrifugation make to be separated by solid-liquid separation, and biomass carbon adsorbent dosage is 0.6-1.4g/L.
2. according to method of claim 1, which is characterized in that temperature is 180 DEG C, time 3h in reaction kettle in step (1), is dried
Dry temperature is 105 DEG C.
3. according to method of claim 1, which is characterized in that adsorption temp is 20 DEG C, adsorption time 3h in step (2), raw
Object charcoal dosage is 0.8g/L.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396815A (en) * | 2013-08-05 | 2013-11-20 | 中国科学院城市环境研究所 | Method for preparing carbon materials by use of sludge |
| CN106861622A (en) * | 2017-03-31 | 2017-06-20 | 华北电力大学（保定） | A kind of water treatment agent for processing eutrophication water |
| CN107262096A (en) * | 2017-06-22 | 2017-10-20 | 南京理工大学 | A kind of preparation method of support type charcoal catalysis material |
| CN107670651A (en) * | 2017-11-13 | 2018-02-09 | 北京工业大学 | The method that sludge based biomass hydro-thermal carbon adsorbent removes cefotaxime antibiotic in water removal |
| CN108821281A (en) * | 2018-06-14 | 2018-11-16 | 北京环球中科水务科技有限公司 | A kind of preparation method and sludge carbon based material of sludge carbon based material |
| CN108866322A (en) * | 2018-06-26 | 2018-11-23 | 广东省资源综合利用研究所 | A kind of method of heavy industries sludge and municipal sludge cooperative disposal |
| CN108854950A (en) * | 2018-06-05 | 2018-11-23 | 南昌大学 | The method that one-step method prepares charcoal nano zero-valence iron complexes |
-
2018
- 2018-12-14 CN CN201811531006.6A patent/CN109364879A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396815A (en) * | 2013-08-05 | 2013-11-20 | 中国科学院城市环境研究所 | Method for preparing carbon materials by use of sludge |
| CN106861622A (en) * | 2017-03-31 | 2017-06-20 | 华北电力大学（保定） | A kind of water treatment agent for processing eutrophication water |
| CN107262096A (en) * | 2017-06-22 | 2017-10-20 | 南京理工大学 | A kind of preparation method of support type charcoal catalysis material |
| CN107670651A (en) * | 2017-11-13 | 2018-02-09 | 北京工业大学 | The method that sludge based biomass hydro-thermal carbon adsorbent removes cefotaxime antibiotic in water removal |
| CN108854950A (en) * | 2018-06-05 | 2018-11-23 | 南昌大学 | The method that one-step method prepares charcoal nano zero-valence iron complexes |
| CN108821281A (en) * | 2018-06-14 | 2018-11-16 | 北京环球中科水务科技有限公司 | A kind of preparation method and sludge carbon based material of sludge carbon based material |
| CN108866322A (en) * | 2018-06-26 | 2018-11-23 | 广东省资源综合利用研究所 | A kind of method of heavy industries sludge and municipal sludge cooperative disposal |
Non-Patent Citations (2)
| Title |
|---|
| 万祥云等: "颗粒状污泥活性炭流化床吸附处理含铜矿山废水", 《化工环保》 * |
| 孙瑾等: "铁系添加剂对污泥基活性炭性能与结构的影响", 《青岛科技大学学报（自然科学版）》 * |
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