CN107032523B - Paper-making reconstituted tobacco wastewater treatment method - Google Patents
Paper-making reconstituted tobacco wastewater treatment method Download PDFInfo
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- CN107032523B CN107032523B CN201710298963.8A CN201710298963A CN107032523B CN 107032523 B CN107032523 B CN 107032523B CN 201710298963 A CN201710298963 A CN 201710298963A CN 107032523 B CN107032523 B CN 107032523B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for treating waste water of paper-making reconstituted tobacco, belonging to the technical field of waste water treatment. The method comprises the following steps: carrying out high-energy ball milling on bentonite and activated carbon to obtain a binary composite coagulant, wherein the weight part of the bentonite is 1-6, the weight part of the activated carbon is 1-6, and the binary composite coagulant is prepared into a binary composite coagulant solution with the mass percentage concentration of 10-20%; adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, and stirring for 3-10 min; adding a binary composite coagulant solution, and stirring for 3-10 min; finally, adding polyacrylamide, and stirring for 3-10 min; the wastewater is filtered after standing for a period of time. The method disclosed by the invention strengthens the coagulation process of the waste water of the reconstituted tobacco produced by the conventional paper-making method, reduces the using amount of polymeric ferric sulfate, reduces the content of inorganic salt in the waste water, reduces the ton treatment cost and improves the treatment effect.
Description
Technical Field
The invention relates to a method for treating waste water of paper-making reconstituted tobacco, belonging to the technical field of waste water treatment.
Background
Coagulation is an important method for water treatment to remove fine suspended substances and colloidal pollutants from water. The coagulation method can be used for pretreatment, intermediate treatment or final treatment of various industrial wastewater (such as industrial wastewater of paper making, steel, textile, coal, mineral separation, chemical industry, food and the like), and tertiary treatment and sludge treatment of municipal sewage.
The waste water is treated by the coagulation of polymeric ferric sulfate and polyacrylamide in the paper-making process reconstituted tobacco industry, the chroma and COD of the treated waste water can reach the secondary standard of Integrated wastewater discharge Standard (GB 8978--1). However, the existing coagulation process for the reconstituted tobacco waste water by the paper-making method has the problems of large consumption of coagulant, overproof inorganic salt content in the treated waste water and high ton treatment cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method has the advantages of large consumption of polymeric ferric sulfate, overproof inorganic salt content in the waste water, high ton treatment cost and the like in the coagulation process of the waste water of the paper-making reconstituted tobacco.
The object of the present invention is to provide: the method for treating the waste water of the paper-making reconstituted tobacco specifically comprises the following steps:
(1) carrying out high-energy ball milling on bentonite and activated carbon to obtain a binary composite coagulant, wherein the weight part of the bentonite is 1-6, the weight part of the activated carbon is 1-6, and the binary composite coagulant is prepared into a binary composite coagulant solution with the mass percentage concentration of 10-20%;
(2) adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, stirring for 3-10 min, adding a binary composite coagulant solution, and stirring for 3-10 min; finally, adding polyacrylamide, and stirring for 3-10 min;
(3) and (3) standing the wastewater obtained in the step (2) for a period of time, and filtering.
Preferably, in the step (1), the ball milling speed is 300-600 r/min, and the ball milling time is 15-30 min.
Preferably, the dosage of the polymeric ferric sulfate in the step (2) is 1000-2000 mg/L, and the stirring speed is 100-600 r/min.
Preferably, the dosage of the binary composite coagulant solution in the step (2) is 1-6 mL/L, and the stirring speed is 100-600 r/min.
Preferably, in the step (2) of the invention, the polyacrylamide is a solution with a mass percentage concentration of 0.5 per mill, the dosage is 1-6 mL/L, and the stirring speed is 100-600 r/min.
According to the invention, the bentonite and the active carbon are subjected to high-energy ball milling, and due to the fact that bentonite layers are easy to expand in the ball milling process, nonpolar and hydrophobic active carbon particles enter the bentonite layers, the interlayer distance and the specific surface area of the bentonite are increased, the adsorption space in the bentonite layers is enlarged, the generated binary composite coagulant has uniform particle size distribution and large specific surface area, and the bentonite has excellent adsorption performance and ion exchange performance, good water dispersibility, and the characteristics of physical adsorption, chemical adsorption, oxidation, catalysis, reduction and the like of the active carbon.
The invention has the beneficial effects that:
(1) the binary composite coagulant prepared by the invention has good dispersibility of bentonite in water, and the suspension prepared by the binary composite coagulant has good dispersion effect, can not be layered after standing for a long time, is convenient to use and easy to store.
(2) The binary composite coagulant is used for manufacturingThe coagulation treatment of the paper-process reconstituted tobacco wastewater reduces the consumption of polymeric ferric sulfate, reduces the content of inorganic salt in the wastewater, reduces the treatment cost per ton and improves the treatment effect, and the chroma and COD of the treated wastewater can reach the first-level A standard (chroma is less than or equal to 30 and COD is less than or equal to 50 mg.L.-1）。
(3) The invention optimizes and strengthens the coagulation process of the waste water of the reconstituted tobacco by the existing paper-making method by using the binary compound coagulant; the bentonite and the active carbon particles are insoluble in water, so that the bentonite and the active carbon particles can be used as a framework for forming flocs in the forming and growing process of polyferric sulfate flocs, and the conditions that the generated alumen ustum is small and loose and is not easy to sink are improved, so that the formed flocs are compact and have better settling property.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited to the examples.
Example 1
(1) Preparation of a binary composite coagulant: placing 5 g of bentonite and 5 g of activated carbon into a ball milling tank, performing high-energy ball milling at the rotating speed of 500 r/min, and uniformly mixing with 90g of water after ball milling for 20min to prepare a binary composite coagulant solution.
(2) Coagulation treatment: adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, stirring for 3min, adding a binary composite coagulant solution, and stirring for 3 min; finally, polyacrylamide is added and stirred for 3 min.
TABLE 1 dosage of the agents and the stirring speed
TABLE 2 Water quality Change before and after treatment of waste water from paper-making reconstituted tobacco
。
Example 2
(1) Preparation of a binary composite coagulant: placing 7.5 g of bentonite and 7.5 g of activated carbon into a ball milling tank, performing high-energy ball milling at the rotating speed of 300r/min, and uniformly mixing with 85 g of water after ball milling for 30 min to obtain a binary composite coagulant solution.
(2) Coagulation treatment: adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, stirring for 10min, adding a binary composite coagulant solution, and stirring for 8 min; finally, polyacrylamide is added and stirred for 10 min.
TABLE 3 dosage of the agents and the stirring time
TABLE 4 Water quality Change before and after treatment of waste water from paper-making reconstituted tobacco
。
Example 3
Preparation of a binary composite coagulant:
2g of bentonite and 3g of activated carbon are put into a ball milling tank, high-energy ball milling is carried out at the rotating speed of 600 r/min, and after ball milling is carried out for 15min, the bentonite and the activated carbon are uniformly mixed with 45 g of water to prepare a binary composite coagulant solution.
(2) Coagulation treatment: adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, stirring for 8min, adding a binary composite coagulant solution, and stirring for 10 min; finally, polyacrylamide was added and stirred for 7 min.
TABLE 5 dosage of the agents and the agitation speed
TABLE 6 Water quality Change before and after treatment of waste water from paper-making reconstituted tobacco
。
Example 4 (comparative example)
Preparation of a binary composite coagulant:
placing 5 g of bentonite and 5 g of activated carbon into a ball milling tank, performing high-energy ball milling at the rotating speed of 500 r/min, and uniformly mixing with 90g of water after ball milling for 20min to prepare a binary composite coagulant solution.
Preparing bentonite:
and (3) putting 10g of bentonite into a ball milling tank, performing high-energy ball milling at the rotating speed of 500 r/min, and uniformly mixing with 90g of water after ball milling for 20min to prepare a bentonite solution.
Preparing activated carbon:
putting 10g of activated carbon into a ball milling tank, performing high-energy ball milling at the rotating speed of 500 r/min, and uniformly mixing with 90g of water after ball milling for 20min to obtain an activated carbon solution.
Coagulation treatment: adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, stirring for 3min, adding a binary composite coagulant solution, and stirring for 3 min; finally, polyacrylamide is added and stirred for 3 min.
TABLE 7 dosage of drug and stirring time
TABLE 8 Water quality Change before and after treatment of paper-making reconstituted tobacco wastewater
Claims (1)
1. The method for treating the waste water generated by the paper-making reconstituted tobacco is characterized by comprising the following steps:
(1) carrying out high-energy ball milling on bentonite and activated carbon to obtain a binary composite coagulant, wherein the weight part of the bentonite is 1-6, the weight part of the activated carbon is 1-6, and the binary composite coagulant is prepared into a binary composite coagulant solution with the mass percentage concentration of 10-20%;
(2) adding polymeric ferric sulfate into the paper-making reconstituted tobacco wastewater, stirring for a period of time, adding a binary composite coagulant solution, and stirring for a period of time; finally, adding polyacrylamide, and stirring for a period of time;
(3) standing the wastewater obtained in the step (2) for a period of time and filtering;
the ball milling speed is 300-600 r/min, and the ball milling time is 15-30 min;
the dosage of the polymeric ferric sulfate is 1000-2000 mg/L, the stirring speed is 100-600 r/min, and the stirring time is 3-10 min;
the dosage of the binary composite coagulant solution is 1-6 mL/L, the stirring speed is 100-600 r/min, and the stirring time is 3-10 min;
the polyacrylamide is a solution with the mass concentration of 0.5 per mill, the dosage is 1-6 mL/L, the stirring speed is 100-600 r/min, and the stirring time is 3-10 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710298963.8A CN107032523B (en) | 2017-05-02 | 2017-05-02 | Paper-making reconstituted tobacco wastewater treatment method |
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| CN201710298963.8A CN107032523B (en) | 2017-05-02 | 2017-05-02 | Paper-making reconstituted tobacco wastewater treatment method |
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| CN107032523A CN107032523A (en) | 2017-08-11 |
| CN107032523B true CN107032523B (en) | 2020-02-07 |
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| CN111841497A (en) * | 2020-07-30 | 2020-10-30 | 盐城工学院 | Modified loofah sponge-based biomass charcoal and preparation method and application thereof |
Citations (5)
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|---|---|---|---|---|
| JP4405287B2 (en) * | 2004-03-02 | 2010-01-27 | 征八朗 三浦 | Dephosphorizing agent and dephosphorizing method using the same |
| CN101811764A (en) * | 2010-04-29 | 2010-08-25 | 南京神克隆科技有限公司 | Efficient ecological type sewage and sludge treating agent and preparation method thereof |
| CN102276093A (en) * | 2011-07-19 | 2011-12-14 | 湖北中烟工业有限责任公司 | Treatment method of papermaking method tobacco sheet production wastewater |
| CN102320702A (en) * | 2011-08-23 | 2012-01-18 | 辽宁科技大学 | The method of Coagulation and Adsorption and chemical oxidation associating advanced treatment on coking wastewater |
| CN103466743A (en) * | 2013-09-26 | 2013-12-25 | 沈阳化工大学 | Method for pretreating high-concentration pharmaceutical wastewater by using bentonite composite intercalation material |
-
2017
- 2017-05-02 CN CN201710298963.8A patent/CN107032523B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4405287B2 (en) * | 2004-03-02 | 2010-01-27 | 征八朗 三浦 | Dephosphorizing agent and dephosphorizing method using the same |
| CN101811764A (en) * | 2010-04-29 | 2010-08-25 | 南京神克隆科技有限公司 | Efficient ecological type sewage and sludge treating agent and preparation method thereof |
| CN102276093A (en) * | 2011-07-19 | 2011-12-14 | 湖北中烟工业有限责任公司 | Treatment method of papermaking method tobacco sheet production wastewater |
| CN102320702A (en) * | 2011-08-23 | 2012-01-18 | 辽宁科技大学 | The method of Coagulation and Adsorption and chemical oxidation associating advanced treatment on coking wastewater |
| CN103466743A (en) * | 2013-09-26 | 2013-12-25 | 沈阳化工大学 | Method for pretreating high-concentration pharmaceutical wastewater by using bentonite composite intercalation material |
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