CN111470656A - Treatment method of organic complex copper-containing wastewater - Google Patents

Treatment method of organic complex copper-containing wastewater Download PDF

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Publication number
CN111470656A
CN111470656A CN202010293228.XA CN202010293228A CN111470656A CN 111470656 A CN111470656 A CN 111470656A CN 202010293228 A CN202010293228 A CN 202010293228A CN 111470656 A CN111470656 A CN 111470656A
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China
Prior art keywords
organic complex
complex copper
wastewater
treating
value
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CN202010293228.XA
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Chinese (zh)
Inventor
白雪
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Hohai University HHU
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Hohai University HHU
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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
    • 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
    • C02F1/5281—Installations for water purification using chemical agents
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • 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 invention discloses a method for treating organic complex copper-containing wastewater, which comprises the following steps: preparing organic complex copper-containing wastewater, adjusting pH for the first time, adding sodium hypochlorite, reacting for a period of time, adjusting pH for the second time, and adding TMT-15 for flocculation. The organic complex copper-containing wastewater is prepared by the following method: adding Cu (NO)3)2Dissolving in pure water, adding bone glue, adding salicylic acid, performing ultrasonic treatment until the bone glue is completely dissolved, adding ethyl acetate, and fixing the volume by 1000m L.

Description

Treatment method of organic complex copper-containing wastewater
Technical Field
The invention relates to a method for treating organic complex copper-containing wastewater, belonging to the technical field of heavy metal wastewater treatment.
Background
With the development of economy, the industry is increasingly developed, and the environmental pollution is more serious; heavy metals are of increasing interest due to their toxicity and the relatively difficult removal. Copper-containing wastewater is a common typical heavy metal pollution, and excessive copper enters human bodies through food chains and can cause harm to the human bodies. The method has definite regulation on the copper content state in the industrial wastewater discharge, so that the research and development of the removal of copper ions in the industrial wastewater are of great significance.
Other organic pollutants often exist in the copper-containing wastewater, the organic pollutants can be complexed with copper ions, the effect of directly removing the complex by using a precipitation method is not good, and copper hydroxide or copper sulfide precipitate is not easy to form, so that the copper in the wastewater cannot be effectively removed by using the traditional chemical precipitation method, and the copper-containing wastewater becomes the difficulty in industrial wastewater treatment.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a method for treating wastewater containing organic complex copper, which solves the technical problem that the complex copper is difficult to precipitate and remove.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for treating waste water containing organic complex copper,
preparing organic complex copper-containing wastewater, adjusting pH for the first time, adding sodium hypochlorite, reacting for a period of time, adjusting pH for the second time, and adding TMT-15 for flocculation.
Further, the organic complex copper-containing wastewater is prepared by the following method:
adding Cu (NO)3)2Dissolving in pure water, adding bone glue, adding salicylic acid, performing ultrasonic treatment to dissolve completely, adding ethyl acetate, and diluting to 1000m L constant volume.
Further, after the constant volume is realized, the organic complex copper-containing wastewater contains Cu2+(Cu(NO3)2) 200 mg/L, 1 g/L of bone glue, 100 mg/L of salicylic acid and 500 mg/L of ethyl acetate.
Further, the range of the pH value of the first time is 1.0-8.0, and reagents used for adjusting the pH value are NaOH and H2SO4。
Further, the dosage of the sodium hypochlorite is 1-6m L/L.
Further, the pH value of the second adjustment is 1.0-8.0, and the reagents used for adjusting the pH value are NaOH and H2SO4。
Further, the addition amount of the TMT-15 is 1-6m L/L.
Has the advantages that: the treatment method of the organic complex copper-containing wastewater provided by the invention adopts sodium hypochlorite oxidation to break the complex and TMT-15 flocculation precipitation, and has the advantages of simple process, short treatment time, low cost, good treatment effect and good application prospect.
Drawings
FIG. 1 shows the amount of NaClO added to Cu in wastewater2+The impact of removal;
FIG. 2 shows the pH value of oxidation reaction versus Cu in wastewater2+The impact of removal;
FIG. 3 shows the addition of TMT-15 to Cu in wastewater2+The impact of removal;
FIG. 4 shows the flocculation pH value versus Cu in wastewater2+The effect of the removal.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The method is a conventional method unless otherwise specified. The copper nitrate trihydrate (Cu (NO)3)2•3H2O), salicylic acid (C)7H6O3) Ethyl acetate (C)4H8O2) Hydrochloric acid (HCl), sodium hydroxide (NaOH), nitric acid (HNO)3) All come from the national drug group chemical reagents, Inc. Bone glue was purchased from haixin chemical. TMT-15 was purchased from environmental protection, Inc., of Yunto Runto, Suzhou.
Example 1
0.7562g of copper nitrate trihydrate (Cu (NO)3)2•3H2O), adding 1g of bone glue, adding 100mg of salicylic acid, adding a small amount of water, carrying out ultrasonic treatment for 30min, adding 556u L ethyl acetate, and carrying out constant volume to 1000m L, and carrying out constant volume treatment on Cu2+The concentration is 200 mg/L, the concentration of ethyl acetate is 500 mg/L, the concentration of bone glue is 1 g/L, and the concentration of salicylic acid is 100 mg/L.
Taking 6 parts of 250m L solution, adjusting the pH value of the solution to 3.0, respectively adding sodium hypochlorite solutions of 0.25m L, 0.5m L0, 0.75m L1, 1m L2, 1.25m L3 and 1.5m L, wherein the adding concentration of sodium hypochlorite is 1, 2, 3, 4, 5 and 6m L/L, reacting for 30min, adjusting the pH value of the solution to 4.0, adding 0.5m L TMT-15, namely the adding concentration of TMT-15 is 2m L/L, reacting for 15min, precipitating for 5min, and removing the copper ions as shown in figure 1, wherein when the adding amount of sodium hypochlorite is 2m L/L, the removing rate of the copper ions is the maximum and reaches 89.9153%.
Example 2
0.7562g of copper nitrate trihydrate (Cu (NO)3)23H 2O), adding 1g of bone glue, adding 100mg of salicylic acid, adding a small amount of water, performing ultrasonic treatment for 30min, adding 556u L of ethyl acetate, performing constant volume to 1000m L, and performing constant volume2+The concentration is 200 mg/L, the ethyl acetate concentration is 500 mg/L, the bone glue is 1 g/L, and the salicylic acid is 100 mg/L.
8 parts of 250m L solution is taken, the pH value of the solution is respectively adjusted to 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 and 8.0, 0.5m L sodium hypochlorite solution is added, namely the adding concentration of the sodium hypochlorite solution is 2m L/L, the reaction is carried out for 30min, the pH value of the solution is adjusted to 4.0, 0.5m L TMT-15 is added, namely the adding concentration of the TMT-15 is 2m L/L, the reaction is carried out for 15min, the precipitation is carried out for 5min, the removal rate of copper ions is shown in figure 2, and when the pH value of the secondary oxidation reaction is 3.0, the removal rate of the copper ions is the maximum and reaches 89.9153%.
Example 3
0.7562g of copper nitrate trihydrate (Cu (NO)3)2•3H2O), adding 1g of bone glue, adding 100mg of salicylic acid, adding a small amount of water, carrying out ultrasonic treatment for 30min, adding 556u L ethyl acetate, and carrying out constant volume to 1000m L, and carrying out constant volume treatment on Cu2+The concentration is 200 mg/L, the ethyl acetate concentration is 500 mg/L, the bone glue is 1 g/L, and the salicylic acid is 100 mg/L.
Taking 6 parts of 250m L solution, adjusting the pH value of the solution to 3.0, adding 0.5m L sodium hypochlorite solution, namely adding TMT-15 with the concentration of 2m L0/L1, reacting for 30min, adjusting the pH value of the solution to 4.0, respectively adding 0.25m L2, 0.5m L3, 0.75m L, 1m L, 1.25m L and 1.5m L, namely adding the TMT-15 with the concentration of 1, 2, 3, 4, 5 and 6m L/L, reacting for 15min, precipitating for 5min, and removing the copper ions as shown in figure 3, wherein when the adding amount of the TMT-15 is 2m L/L, the removal rate of the copper ions is the maximum and reaches 89.9153%.
Example 4
0.7562g of copper nitrate trihydrate (Cu (NO)3)2•3H2O), adding 1g of bone glue, adding 100mg of salicylic acid, adding a small amount of water, carrying out ultrasonic treatment for 30min, adding 556u L ethyl acetate, and carrying out constant volume to 1000m L, and carrying out constant volume treatment on Cu2+The concentration is 200 mg/L, the ethyl acetate concentration is 500 mg/L, the bone glue is 1 g/L, and the salicylic acid is 100 mg/L.
8 parts of 250m L solution is taken, the pH value of the solution is adjusted to 3.0, 0.5m L sodium hypochlorite solution is respectively added, namely the adding concentration of the sodium hypochlorite solution is 2m L/L, the reaction is carried out for 30min, the pH value of the solution is respectively adjusted to 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 and 8.0, 0.5m L TMT-15 is added, namely the adding concentration of the TMT-15 is 2m L/L, the reaction is carried out for 15min, the precipitation is carried out for 5min, the removal rate of copper ions is shown in figure 4, and when the pH value of the flocculation precipitation is 4.0, the removal rate of the copper ions is the maximum and reaches 89.9153%.
By combining the experimental results of examples 1-4, the optimum pH value of the oxidation reaction is 3.0, the concentration of the sodium hypochlorite solution added is 2m L/L, the optimum pH value of the flocculation reaction is 4.0, and the addition amount of TMT-15 is 2m L/L during the treatment of the wastewater containing the organic complex copper.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (7)

1. A method for treating wastewater containing organic complex copper is characterized by comprising the following steps: the process is as follows:
preparing organic complex copper-containing wastewater, adjusting pH for the first time, adding sodium hypochlorite, reacting for a period of time, adjusting pH for the second time, and adding TMT-15 for flocculation.
2. The method for treating the wastewater containing the organic complex copper according to claim 1, wherein the method comprises the following steps: the organic complex copper-containing wastewater is prepared by the following method:
adding Cu (NO)3)2Dissolving in pure water, adding bone glue, adding salicylic acid, performing ultrasonic treatment to dissolve completely, adding ethyl acetate, and diluting to 1000m L constant volume.
3. The method for treating the wastewater containing the organic complex copper according to claim 2, wherein the method comprises the following steps: after constant volume, Cu in the organic complex copper-containing wastewater2+(Cu(NO3)2) 200 mg/L, 1 g/L of bone glue, 100 mg/L of salicylic acid and 500 mg/L of ethyl acetate.
4. The method for treating the wastewater containing the organic complex copper according to claim 1, wherein the method comprises the following steps: the range of the pH value of the first adjustment is 1.0-8.0, and reagents used for adjusting the pH value are NaOH and H2SO4。
5. The method for treating the wastewater containing the organic complex copper according to claim 1, wherein the amount of the sodium hypochlorite added is 1-6m L/L.
6. The method for treating the wastewater containing the organic complex copper according to claim 1, wherein the method comprises the following steps: the pH value of the second adjustment is 1.0-8.0, and the reagents used for adjusting the pH value are NaOH and H2SO4。
7. The method for treating the wastewater containing the organic complex copper according to claim 1, wherein the amount of TMT-15 added is 1-6m L/L.
CN202010293228.XA 2020-04-15 2020-04-15 Treatment method of organic complex copper-containing wastewater Pending CN111470656A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111517546A (en) * 2020-04-07 2020-08-11 江苏南大华兴环保科技股份公司 Treatment method for recycling magnesium salt in copper-containing wastewater
CN113149290A (en) * 2021-05-24 2021-07-23 日彩电子科技(深圳)有限公司 Treatment method of copper-containing printing ink wastewater

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482786A (en) * 2013-09-22 2014-01-01 上海丰信环保科技有限公司 Method for treating waste water containing complex copper
CN103864247A (en) * 2014-04-03 2014-06-18 南京大学环境规划设计研究院有限公司 PCB (Printed Circuit Board) copper-containing wastewater treatment method with autocatalytic oxidation as core
CN105016532A (en) * 2015-08-13 2015-11-04 安徽工程大学 Treatment method of low concentration waste water with complexing copper
CN108395015A (en) * 2017-12-07 2018-08-14 文树龙 A kind of processing method of plating copper-containing wastewater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482786A (en) * 2013-09-22 2014-01-01 上海丰信环保科技有限公司 Method for treating waste water containing complex copper
CN103864247A (en) * 2014-04-03 2014-06-18 南京大学环境规划设计研究院有限公司 PCB (Printed Circuit Board) copper-containing wastewater treatment method with autocatalytic oxidation as core
CN105016532A (en) * 2015-08-13 2015-11-04 安徽工程大学 Treatment method of low concentration waste water with complexing copper
CN108395015A (en) * 2017-12-07 2018-08-14 文树龙 A kind of processing method of plating copper-containing wastewater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111517546A (en) * 2020-04-07 2020-08-11 江苏南大华兴环保科技股份公司 Treatment method for recycling magnesium salt in copper-containing wastewater
CN111517546B (en) * 2020-04-07 2022-03-01 江苏南大华兴环保科技股份公司 Treatment method for recycling magnesium salt in copper-containing wastewater
CN113149290A (en) * 2021-05-24 2021-07-23 日彩电子科技(深圳)有限公司 Treatment method of copper-containing printing ink wastewater

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Application publication date: 20200731