High-efficiency copper-removal mixture and application thereof

Abstract

The invention provides a high-efficiency copper-removal mixture. The high-efficiency copper-removal mixture comprises a component A and a component B by weight percentage, wherein the component A comprises 20-40 parts of crosslinking starch, 5-10 parts of di-isopropylbenzene hydroperoxide, 15-25 parts of carbon disulfide, 20-25 parts of sodium hydroxide, and 80-90 parts of water; wherein the component B comprises 15-25 parts of polyferric sulfate, 5-15 parts of polyaluminum ferric chloride, 7-12 parts of polyacrylamide, and 60-80 parts of water. The high-efficiency copper-removal mixture has double-effect copper-removal effect, can increase the removal rate of copper ions, improves ecological environment, and has the advantages of no toxicity, environmental protection, and low cost.

Description

technical field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency copper-removing combination agent and a use method thereof. Background technique

[0002] Copper is reddish in appearance with a metallic luster, and most copper compounds are blue. Copper is an essential trace element for life, but excessive copper is harmful to human body, animals, plants and aquatic plants. Containing more than 1mg / L of copper will significantly increase the turbidity of water, and more than 1.5mg / L will cause the water to have a peculiar smell. Long-term drinking of water with high concentration will stimulate the gastrointestinal mucosa, cause vomiting, and damage the liver. However, the absorption rate of copper from the gastrointestinal tract is very low.

[0003] In the production process of printed circuit board (PCB), copper ions are contained in the wastewater discharged from grinding plate, weak corrosion, copper elec...

Examples

Embodiment 1

[0032] Including the following weight percentages of A component and B component:

[0033] Among them, component A contains cross-linked starch: 20 parts;

[0034] Dicumyl hydroperoxide: 10 parts;

[0035] Carbon disulfide: 15 parts;

[0036] Sodium hydroxide: 25 parts;

[0037] Water: 80 parts;

[0038] Wherein, component B contains polyferric sulfate: 15 parts;

[0039] Polyaluminum ferric chloride: 15 parts;

[0040] Polyacrylamide: 12 parts;

[0041] Water: 60 parts;

[0042] Specifically, the cross-linked starch, carbon disulfide and sodium hydroxide are all in powder form, and the particle size is 0.2-0.8um.

[0043] Specifically, the cross-linked starch is epichlorohydrin cross-linked starch.

[0044] Instructions:

[0045] Specifically, the following steps are included:

[0046] a) Mix cross-linked starch and dicumyl hydroperoxide and place them in a kneader, kneading for 1 hour at a temperature below 40°C;

[0047] b) Mix the material obtained in step a wit...

Embodiment 2

[0056] Including the following weight percentages of A component and B component:

[0057] Among them, component A contains cross-linked starch: 20 parts;

[0058] Dicumyl hydroperoxide: 10 parts;

[0059] Carbon disulfide: 15 parts;

[0060] Sodium hydroxide: 25 parts;

[0061] Water: 80 parts;

[0062] Wherein, component B contains polyferric sulfate: 15 parts;

[0063] Polyaluminum ferric chloride: 15 parts;

[0064] Polyacrylamide: 12 parts;

[0065] Water: 60 parts;

[0066] Instructions:

[0067] a) Mix cross-linked starch and dicumyl hydroperoxide and place them in a kneader, kneading for 1 hour at a temperature below 40°C;

[0068] b) Mix the material obtained in step a with carbon disulfide, sodium hydroxide, and water and place it in a reactor, heat the reactor to 60-70°C and vacuumize and keep it warm for 2 hours, and adjust the pH to 7.0-8.0 to obtain Group A Minute;

[0069] c) Add component A to the circuit board waste water until the pH is 9.0-10.5, fu...

Embodiment 3

[0074] Including the following weight percentages of A component and B component:

[0075] Among them, component A contains cross-linked starch: 20 parts;

[0076] Dicumyl hydroperoxide: 10 parts;

[0077] Carbon disulfide: 15 parts;

[0078] Sodium hydroxide: 25 parts;

[0079] Water: 80 parts;

[0080] Wherein, component B contains polyferric sulfate: 15 parts;

[0081] Polyaluminum ferric chloride: 15 parts;

[0082] Polyacrylamide: 12 parts;

[0083] Water: 60 parts;

[0084] Using method is with embodiment 2,

[0085] Table 3 is a comparison table of copper content and CODcr index when the final pH of the high-efficiency copper removal agent is 8 after being added to the wastewater.

[0086]

[0087]

[0088] Comparing with Example 2, it can be known that the total copper removal rate and CODcr removal rate change are small.

technical field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency copper-removing combination agent and a use method thereof. Background technique

[0002] Copper is reddish in appearance with a metallic luster, and most copper compounds are blue. Copper is an essential trace element for life, but excessive copper is harmful to human body, animals, plants and aquatic plants. Containing more than 1mg / L of copper will significantly increase the turbidity of water, and more than 1.5mg / L will cause the water to have a peculiar smell. Long-term drinking of water with high concentration will stimulate the gastrointestinal mucosa, cause vomiting, and damage the liver. However, the absorption rate of copper from the gastrointestinal tract is very low.

[0003] In the production process of printed circuit board (PCB), copper ions are contained in the wastewater discharged from grinding plate, weak corrosion, copper elec...

Examples

Embodiment 1

[0032] Including the following weight percentages of A component and B component:

[0033] Among them, component A contains cross-linked starch: 20 parts;

[0034] Dicumyl hydroperoxide: 10 parts;

[0035] Carbon disulfide: 15 parts;

[0036] Sodium hydroxide: 25 parts;

[0037] Water: 80 parts;

[0038] Wherein, component B contains polyferric sulfate: 15 parts;

[0039] Polyaluminum ferric chloride: 15 parts;

[0040] Polyacrylamide: 12 parts;

[0041] Water: 60 parts;

[0042] Specifically, the cross-linked starch, carbon disulfide and sodium hydroxide are all in powder form, and the particle size is 0.2-0.8um.

[0043] Specifically, the cross-linked starch is epichlorohydrin cross-linked starch.

[0044] Instructions:

[0045] Specifically, the following steps are included:

[0046] a) Mix cross-linked starch and dicumyl hydroperoxide and place them in a kneader, kneading for 1 hour at a temperature below 40°C;

[0047] b) Mix the material obtained in step a wit...

Embodiment 2

[0056] Including the following weight percentages of A component and B component:

[0057] Among them, component A contains cross-linked starch: 20 parts;

[0058] Dicumyl hydroperoxide: 10 parts;

[0059] Carbon disulfide: 15 parts;

[0060] Sodium hydroxide: 25 parts;

[0061] Water: 80 parts;

[0062] Wherein, component B contains polyferric sulfate: 15 parts;

[0063] Polyaluminum ferric chloride: 15 parts;

[0064] Polyacrylamide: 12 parts;

[0065] Water: 60 parts;

[0066] Instructions:

[0067] a) Mix cross-linked starch and dicumyl hydroperoxide and place them in a kneader, kneading for 1 hour at a temperature below 40°C;

[0068] b) Mix the material obtained in step a with carbon disulfide, sodium hydroxide, and water and place it in a reactor, heat the reactor to 60-70°C and vacuumize and keep it warm for 2 hours, and adjust the pH to 7.0-8.0 to obtain Group A Minute;

[0069] c) Add component A to the circuit board waste water until the pH is 9.0-10.5, fu...

Embodiment 3

[0074] Including the following weight percentages of A component and B component:

[0075] Among them, component A contains cross-linked starch: 20 parts;

[0076] Dicumyl hydroperoxide: 10 parts;

[0077] Carbon disulfide: 15 parts;

[0078] Sodium hydroxide: 25 parts;

[0079] Water: 80 parts;

[0080] Wherein, component B contains polyferric sulfate: 15 parts;

[0081] Polyaluminum ferric chloride: 15 parts;

[0082] Polyacrylamide: 12 parts;

[0083] Water: 60 parts;

[0084] Using method is with embodiment 2,

[0085] Table 3 is a comparison table of copper content and CODcr index when the final pH of the high-efficiency copper removal agent is 8 after being added to the wastewater.

[0086]

[0087]

[0088] Comparing with Example 2, it can be known that the total copper removal rate and CODcr removal rate change are small.

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