CN111001384A - Preparation and treatment method of harmless trivalent arsenic adsorption material in aquaculture wastewater - Google Patents
Preparation and treatment method of harmless trivalent arsenic adsorption material in aquaculture wastewater Download PDFInfo
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- CN111001384A CN111001384A CN201911231684.5A CN201911231684A CN111001384A CN 111001384 A CN111001384 A CN 111001384A CN 201911231684 A CN201911231684 A CN 201911231684A CN 111001384 A CN111001384 A CN 111001384A
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- biomass charcoal
- adsorption
- temperature
- arsenic
- ceramic crucible
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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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- 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
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0274—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04 characterised by the type of anion
- B01J20/0288—Halides of compounds other than those provided for in B01J20/046
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F2101/103—Arsenic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
Abstract
The preparation and treatment method of the trivalent arsenic harmless adsorption material in the aquaculture wastewater comprises the following steps: step 1, selecting crushed rice straws, putting the crushed rice straws into a ceramic crucible, covering and sealing the ceramic crucible, then putting the ceramic crucible into a muffle furnace, firing the rice straws at a high temperature of 500 ℃, keeping the temperature for 2 hours, taking out the fired biomass charcoal after the temperature of the muffle furnace naturally drops to room temperature, crushing the biomass charcoal by a mortar of 300 meshes, and bagging the biomass charcoal; step 2, soaking the biomass charcoal in 10% nitric acid solution for 24 hours, washing with pure water for 3 times, and drying at 105 ℃ for later use; the adsorption material prepared by the invention has the advantages of wide raw material source, low cost, convenient operation, high arsenic compound adsorption efficiency in the aquaculture process and wide market application prospect.
Description
Technical Field
The invention relates to the field of aquaculture, in particular to a preparation and treatment method of a trivalent arsenic harmless adsorbing material in aquaculture wastewater.
Background
Inorganic arsenic is a well-known human carcinogen and represents a major environmental problem worldwide as contaminated water sources have led to widespread human exposure. Research shows that the concentration of arsenic in water has obvious influence on the concentration of arsenic in natural fish tissues, and is the first report that the concentration of arsenic in freshwater fish species is comparable to that in marine fish species, so that trivalent arsenic in aquaculture wastewater needs to be treated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for preparing and treating a trivalent arsenic harmless adsorbing material in aquaculture wastewater.
The purpose of the invention is realized by the following technical scheme:
a preparation and treatment method of a trivalent arsenic harmless adsorption material in aquaculture wastewater comprises the following steps: step 1, selecting crushed rice straws, putting the crushed rice straws into a ceramic crucible, covering and sealing the ceramic crucible, then putting the ceramic crucible into a muffle furnace, firing the rice straws at a high temperature of 500 ℃, keeping the temperature for 2 hours, taking out the fired biomass charcoal after the temperature of the muffle furnace naturally drops to room temperature, crushing the biomass charcoal by a mortar of 300 meshes, and bagging the biomass charcoal;
step 2, soaking the biomass charcoal in 10% nitric acid solution for 24 hours, washing with pure water for 3 times, and drying at 105 ℃ for later use;
and step 3, adding FeCl3 into the biomass charcoal to serve as a trivalent arsenic harmless adsorption conversion material, wherein the mass ratio of the biomass charcoal to FeCl3 in the adsorption conversion material is 3: 1. Adding the prepared adsorbing material onto an overflow weir plate made of polytetrafluoroethylene materials according to the thickness of 0.5cm, wherein the size of the overflow weir plate is 120cm long by 80cm high, the load of FeCl3 on each overflow weir plate is 72g, the size of a treatment pool is 10m long by 3.6m wide, the water level of the treatment pool is controlled by the height of the overflow weir plate being 80cm, so that the treatment water amount of the treatment pool is 28.8m3, and eight overflow weir plates are designed, so that the content of FeCl3 is in the concentration range of 20mg/L, and filtering;
and 5, finally, the adsorption efficiency of total arsenic 7d in the effluent reaches more than 90 percent, the content of trivalent arsenic can be reduced to be below the detection limit by 5 days of adsorption, and pentavalent arsenic can be completely adsorbed by 7 days.
Has the advantages that:
the adsorption material prepared by the invention has the advantages of wide raw material source, low cost, convenient operation, high arsenic compound adsorption efficiency in the aquaculture process and wide market application prospect.
Drawings
FIG. 1 is a schematic flow chart of a method for treating a trivalent arsenic harmless adsorbing material in aquaculture wastewater.
FIG. 2 is a diagram showing the effect of arsenic removal by the treatment method of the harmless trivalent arsenic adsorbing material for aquaculture wastewater.
Detailed Description
The invention is explained in more detail below with reference to the figures and examples:
a preparation and treatment method of a trivalent arsenic harmless adsorption material in aquaculture wastewater comprises the following steps: step 1, selecting crushed rice straws, putting the crushed rice straws into a ceramic crucible, covering and sealing the ceramic crucible, then putting the ceramic crucible into a muffle furnace, firing the rice straws at a high temperature of 500 ℃, keeping the temperature for 2 hours, taking out the fired biomass charcoal after the temperature of the muffle furnace naturally drops to room temperature, crushing the biomass charcoal by a mortar of 300 meshes, and bagging the biomass charcoal;
step 2, soaking the biomass charcoal in 10% nitric acid solution for 24 hours, washing with pure water for 3 times, and drying at 105 ℃ for later use;
and step 3, adding FeCl3 into the biomass charcoal to serve as a trivalent arsenic harmless adsorption conversion material, wherein the mass ratio of the biomass charcoal to FeCl3 in the adsorption conversion material is 3: 1. Adding the prepared adsorbing material onto an overflow weir plate made of polytetrafluoroethylene materials according to the thickness of 0.5cm, wherein the size of the overflow weir plate is 120cm long by 80cm high, the load of FeCl3 on each overflow weir plate is 72g, the size of a treatment pool is 10m long by 3.6m wide, the water level of the treatment pool is controlled by the height of the overflow weir plate being 80cm, so that the treatment water amount of the treatment pool is 28.8m3, and eight overflow weir plates are designed, so that the content of FeCl3 is in the concentration range of 20mg/L, and filtering;
and 5, finally, the adsorption efficiency of the total arsenic in the effluent reaches more than 90 percent in 7 days, the content of trivalent arsenic can be reduced to be below the detection limit in 5 days of adsorption, and pentavalent arsenic can be completely adsorbed in 7 days.
The method is applied to the treatment of the aquaculture water in the Holland area in Halbin city, and the result shows that the adsorption efficiency of the total arsenic in the effluent reaches over 90 percent after seven days of treatment, the content of trivalent arsenic can be reduced to be below the detection limit by five days of adsorption treatment, and pentavalent arsenic can be completely adsorbed by seven days of treatment.
TABLE 1 summary of arsenic treatment results
Claims (1)
1. A preparation and treatment method of a trivalent arsenic harmless adsorption material in aquaculture wastewater is characterized by comprising the following steps:
step 1, selecting crushed rice straws, putting the crushed rice straws into a ceramic crucible, covering and sealing the ceramic crucible, then putting the ceramic crucible into a muffle furnace, firing the rice straws at a high temperature of 500 ℃, keeping the temperature for 2 hours, taking out the fired biomass charcoal after the temperature of the muffle furnace naturally drops to room temperature, crushing the biomass charcoal by a mortar of 300 meshes, and bagging the biomass charcoal;
step 2, soaking the biomass charcoal in 10% nitric acid solution for 24 hours, washing with pure water for 3 times, and drying at 105 ℃ for later use;
adding FeCl3 into the biomass charcoal to serve as a trivalent arsenic harmless adsorption conversion material, wherein the mass ratio of the biomass charcoal to FeCl3 in the adsorption conversion material is 3: 1;
adding the prepared adsorbing material onto an overflow weir plate made of polytetrafluoroethylene materials according to the thickness of 0.5cm, wherein the size of the overflow weir plate is 120cm long by 80cm high, the load of FeCl3 on each overflow weir plate is 72g, the size of a treatment pool is 10m long by 3.6m wide, the water level of the treatment pool is controlled by the height of the overflow weir plate being 80cm, so that the treatment water amount of the treatment pool is 28.8m3, and eight overflow weir plates are designed, so that the content of FeCl3 is in the concentration range of 20mg/L, and filtering;
and 5, finally, the adsorption efficiency of total arsenic 7d in the effluent reaches more than 90 percent, the content of trivalent arsenic can be reduced to be below the detection limit by 5 days of adsorption, and pentavalent arsenic can be completely adsorbed by 7 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911231684.5A CN111001384A (en) | 2019-12-05 | 2019-12-05 | Preparation and treatment method of harmless trivalent arsenic adsorption material in aquaculture wastewater |
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| CN201911231684.5A CN111001384A (en) | 2019-12-05 | 2019-12-05 | Preparation and treatment method of harmless trivalent arsenic adsorption material in aquaculture wastewater |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941583A (en) * | 2015-06-26 | 2015-09-30 | 中国科学院城市环境研究所 | Cadmium-arsenic absorbing material and preparing method and application thereof |
| CN105944668A (en) * | 2016-05-11 | 2016-09-21 | 中国农业科学院农业环境与可持续发展研究所 | Modified biomass charcoal for treating arsenic pollution as well as preparation method and application of modified biomass charcoal |
| CN106390940A (en) * | 2016-10-28 | 2017-02-15 | 湖南化工研究院有限公司 | Modified bio-char as well as preparation method and application thereof |
| US20180126368A1 (en) * | 2016-11-07 | 2018-05-10 | Council Of Scientific & Industrial Research | Process for the production of graphene sheets with tunable functionalities from seaweed promoted by deep eutectic solvents |
| CN108339520A (en) * | 2018-04-10 | 2018-07-31 | 黄山学院 | A kind of depth goes nano-sized iron oxide-charcoal complex, preparation method and its application method of heavy metal in water removal |
| WO2019114532A1 (en) * | 2017-12-12 | 2019-06-20 | 江苏省农业科学院 | Preparation method for composite modified straw active particulate carbon adsorption material and use of same |
-
2019
- 2019-12-05 CN CN201911231684.5A patent/CN111001384A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941583A (en) * | 2015-06-26 | 2015-09-30 | 中国科学院城市环境研究所 | Cadmium-arsenic absorbing material and preparing method and application thereof |
| CN105944668A (en) * | 2016-05-11 | 2016-09-21 | 中国农业科学院农业环境与可持续发展研究所 | Modified biomass charcoal for treating arsenic pollution as well as preparation method and application of modified biomass charcoal |
| CN106390940A (en) * | 2016-10-28 | 2017-02-15 | 湖南化工研究院有限公司 | Modified bio-char as well as preparation method and application thereof |
| US20180126368A1 (en) * | 2016-11-07 | 2018-05-10 | Council Of Scientific & Industrial Research | Process for the production of graphene sheets with tunable functionalities from seaweed promoted by deep eutectic solvents |
| WO2019114532A1 (en) * | 2017-12-12 | 2019-06-20 | 江苏省农业科学院 | Preparation method for composite modified straw active particulate carbon adsorption material and use of same |
| CN108339520A (en) * | 2018-04-10 | 2018-07-31 | 黄山学院 | A kind of depth goes nano-sized iron oxide-charcoal complex, preparation method and its application method of heavy metal in water removal |
Non-Patent Citations (3)
| Title |
|---|
| XIAOHUA WANG: "Functionalized Biochar/Clay Composite for Reducing the Biovailable Fraction of Arsenic and Cadmium in River Sediment", 《ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY》 * |
| 吴福飞: "铁改性生物炭抑制土壤中As的迁移", 《农业工程学报》 * |
| 汤施展: "水产品中砷形态分析研究进展", 《水产学杂志》 * |
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