Heavy metal wastewater treating agent and preparation method thereof

A wastewater treatment agent and heavy metal technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve human health hazards, environmental hazards, and heavy metal wastewater that cannot be biodegraded and other problems to achieve good flocculation effect and good removal effect

Inactive Publication Date: 2016-05-04
SUZHOU FAST INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy metal wastewater cannot be biodegraded and can accumulate at the same time, which not only causes great harm to the environment, but also eventually accumulates in the human body, causing serious harm to human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A heavy metal wastewater treatment agent, comprising in parts by weight: 2 parts of deacetylated chitin, 5 parts of ethanol, 0.5 parts of aluminum sulfate, 5 parts of sodium hydroxide, 5 parts of calcium hydroxide, 0.5 parts of ferric chloride, and 0.5 parts of ferric sulfate 0.1 part of methyl p-hydroxybenzoate, 0.1 part of sodium diacetate, 0.1 part of hydrogen peroxide, 0.05 part of peracetic acid, 0.1 part of sodium persulfite, 0.5 part of hydrochloric acid, and 30 parts of water.

[0016] The preparation method of the above-mentioned heavy metal wastewater treatment agent is as follows: first mix deacetylated chitin, hydrochloric acid and water at room temperature, and stir for 10 minutes at a speed of 500 rpm with a magnetic stirrer; then add aluminum sulfate, sodium hydroxide, calcium hydroxide, chlorine Ferric chloride, ferric sulfate, sodium diacetate, hydrogen peroxide, peracetic acid and sodium hyposulfite, heated to 40°C, and stirred at 800rpm for 10 minutes ...

Embodiment 2

[0018] A heavy metal wastewater treatment agent, comprising in parts by weight: 3 parts of deacetylated chitin, 6 parts of ethanol, 0.7 parts of aluminum sulfate, 7 parts of sodium hydroxide, 7 parts of calcium hydroxide, 0.6 parts of ferric chloride, and 0.6 parts of ferric sulfate 0.13 parts of methyl p-hydroxybenzoate, 0.12 parts of sodium diacetate, 0.12 parts of hydrogen peroxide, 0.07 parts of peracetic acid, 0.13 parts of sodium persulfite, 0.7 parts of hydrochloric acid, and 35 parts of water.

[0019] The preparation method of the above-mentioned heavy metal wastewater treatment agent is as follows: firstly mix deacetylated chitin, hydrochloric acid and water at normal temperature, and use a magnetic stirrer to stir for 13 minutes at a speed of 600 rpm; then add aluminum sulfate, sodium hydroxide, calcium hydroxide, chlorine Ferric chloride, ferric sulfate, sodium diacetate, hydrogen peroxide, peracetic acid and sodium hyposulfite, heated to 45°C, and stirred at 900rpm...

Embodiment 3

[0021] A heavy metal wastewater treatment agent, comprising in parts by weight: 3 parts of deacetylated chitin, 7 parts of ethanol, 0.7 parts of aluminum sulfate, 8 parts of sodium hydroxide, 8 parts of calcium hydroxide, 0.8 parts of ferric chloride, and 0.7 parts of ferric sulfate 0.15 parts of methyl p-hydroxybenzoate, 0.15 parts of sodium diacetate, 0.15 parts of hydrogen peroxide, 0.07 parts of peracetic acid, 0.15 parts of sodium persulfite, 0.7 parts of hydrochloric acid, and 40 parts of water.

[0022] The preparation method of the above-mentioned heavy metal wastewater treatment agent is as follows: first mix deacetylated chitin, hydrochloric acid and water at room temperature, and stir for 15 minutes at a speed of 750 rpm with a magnetic stirrer; then add aluminum sulfate, sodium hydroxide, calcium hydroxide, chlorine Iron oxide, ferric sulfate, sodium diacetate, hydrogen peroxide, peracetic acid and sodium hyposulfite, heated to 45°C, and stirred at 1000rpm for 15 mi...

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PUM

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Abstract

The invention provides a heavy metal wastewater treating agent and a preparation method thereof. The treating agent is prepared from deacetylated chitin, ethanol, aluminum sulfate, sodium hydroxide, calcium hydroxide, ferric chloride, ferric sulfate, methyl 4-hydroxybenzoate, sodium diacetate, hydrogen peroxide, peracetic acid, sodium hydrosulfite, hydrochloric acid and water. The preparation method of the heavy metal wastewater treating agent includes the steps that firstly, deacetylated chitin, hydrochloric acid and water are mixed at the normal temperature and stirred with a magnetic stirrer; then, aluminum sulfate, sodium hydroxide, calcium hydroxide, ferric chloride, ferric sulfate, sodium diacetate, hydrogen peroxide, peracetic acid and sodium hydrosulfite are added, and the mixture is heated and continues to be stirred; finally, a mixed solution of ethanol and methyl 4-hydroxybenzoate is added, the mixture is stirred, and the heavy metal wastewater treating agent is obtained. The heavy metal wastewater treating agent can effectively remove heavy metal ions and make treated water reusable due to the good flocculation effect; in addition, the preparation method of the heavy metal wastewater treating agent is simple and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of water treatment agents, in particular to a heavy metal wastewater treatment agent and a preparation method thereof. Background technique [0002] Although the total amount of water resources in my country ranks sixth in the world, the per capita water volume is only 1 / 4 of the world's. It is one of the countries with serious shortage of water resources, and is currently seriously short of water. On the other hand, in recent years, with the development of industry and the increase of human activities, a large amount of industrial wastewater and urban domestic sewage containing heavy metal pollutants have been produced. It is estimated that millions of tons of heavy metals are discharged into the environment every year in the world, including 147,000 tons of Cu, 12,000 tons of Hg, and 381,000 tons of Ni, etc., and they are increasing year by year. Heavy metal wastewater mainly comes from the smelting industry, elect...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F1/62
CPCC02F1/5263C02F1/5236C02F1/54C02F1/56
Inventor 彭孝茹
Owner SUZHOU FAST INFORMATION TECH CO LTD
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