Industrial wastewater heavy metal ion capturing agent, preparation method and wastewater treatment method

A technology for heavy metal ions and industrial wastewater, applied in water/sewage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc. Good capture effect, simple operation effect

Pending Publication Date: 2022-03-11
HENGLI ELETEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bioflocculation, electrolysis and membrane separation all have the disadvantages of high equipment cost and processing cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An industrial wastewater heavy metal ion scavenger, each component content is 1wt% 1,3,5-triazine-2,4,6-trithiol trisodium salt, 0.2wt% sodium sulfide, 0.2wt% thiol Sodium sulfate, the rest is deionized water. The preparation method is:

[0022] Step 1: Add 1,3,5-triazine-2,4,6-trithiol trisodium salt into deionized water at room temperature, and keep stirring for 10-30 minutes.

[0023] Step 2: Add sodium sulfide and keep stirring for 5-10 minutes.

[0024] Step 3: Add sodium thiosulfate and keep stirring for 5-10 minutes, and the heavy metal ion scavenger is prepared after completion.

[0025] The method for treating waste water with an industrial waste water heavy metal ion scavenger comprises the following steps:

[0026] Step 1: Prepare 10ppm nickel sulfate standard solution, which is the waste water sample solution as the nickel source.

[0027] Step 2: adjust the pH value of the nickel sulfate solution to 11.

[0028] Step 3: add the heavy metal ion scavenge...

Embodiment 2

[0032] An industrial wastewater heavy metal ion scavenger, the content of each component is 1wt% dithiocarbamate, 1wt% sodium sulfide, 0.5wt% urea, 0.5wt% xanthan gum, and the rest is deionized water. The preparation method is:

[0033] Step 1: Heat deionized water to 85°C in a reactor.

[0034] Step 2: After reaching temperature, dithiocarbamate was added and stirring was continued for 5 hours.

[0035] Step 3: Add sodium sulfide and keep stirring for 10 minutes.

[0036] Step 4: Add urea and keep stirring for 10 minutes.

[0037] Step 5: Add xanthan gum and keep stirring for 30 minutes. After completion, the heavy metal ion scavenger is prepared.

[0038] The method for treating waste water with an industrial waste water heavy metal ion scavenger comprises the following steps:

[0039] Step 1: Prepare 10ppm copper sulfate standard solution, which is the wastewater sample solution as the copper source.

[0040] Step 2: adjust the pH value of the copper sulfate solution t...

Embodiment 3

[0045] An industrial waste water heavy metal ion scavenger, each component content is 2wt% dithiocarbamate, 1wt% sodium sulfide, 0.5wt% sodium thiosulfate, 0.5wt% urea, 0.5wt% xanthan gum, the rest for deionized water. The preparation method is:

[0046] Step 1: Heat deionized water to 85°C in a reactor.

[0047] Step 2: After reaching temperature, dithiocarbamate was added and stirring was continued for 5 hours.

[0048] Step 3: Add sodium sulfide and keep stirring for 10 minutes.

[0049] Step 4: Add sodium thiosulfate and continue stirring for 5 minutes.

[0050] Step 5: Add urea and keep stirring for 10 minutes.

[0051] Step 6: Add xanthan gum and keep stirring for 30 minutes. After completion, the heavy metal ion scavenger is prepared.

[0052] The method for treating waste water with an industrial waste water heavy metal ion scavenger comprises the following steps:

[0053] Step 1: Prepare a nickel sulfate-copper sulfate mixed solution, wherein the contents of nic...

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PUM

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Abstract

The invention discloses an industrial wastewater heavy metal ion capturing agent, a preparation method and a wastewater treatment method, and relates to the technical field of industrial wastewater treatment. The water-soluble sulfur-containing cleaning agent is composed of 0.5-5 wt% of a chelating agent, 0.01-2 wt% of inorganic sulfur, 0-2 wt% of a complexing agent, 0-2 wt% of a cosolvent, 0-2 wt% of a stabilizer and the balance of deionized water. The method comprises the following steps: taking corresponding heavy metal wastewater, adjusting the pH value of the wastewater, adding a capturing agent and stirring, dropwise adding a flocculating agent and a coagulant aid and stirring, and finally sampling and detecting the concentration of heavy metal ions. Through the chelation between the heavy metal ion chelating agent and heavy metal ions, the heavy metal ion chelating agent achieves the removal effect, and is a green heavy metal wastewater treatment agent which is high in trapping capacity, small in actual dosage, low in cost and easy to operate. The heavy metal ion capturing agent has a good capturing effect on various heavy metal ions such as nickel, copper, zinc, chromium, mercury, aluminum, manganese, iron and the like, the removal rate reaches 98.5% or above, and the national emission standard is met.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to an industrial wastewater heavy metal ion scavenger, a preparation method and a wastewater treatment method. Background technique [0002] Heavy metal wastewater mainly comes from industrial wastewater, agricultural wastewater and domestic sewage. The industrial wastewater industry includes the electronic and electrical industry, the electroplating and printing industry, and the battery rubber industry. Agricultural wastewater mainly includes excessive use of chemical fertilizers, pesticides, and feed. Domestic sewage mainly includes domestic garbage, waste batteries and so on. These wastewaters all contain high levels of heavy metal ions. [0003] Conventional treatment methods for heavy metal wastewater include neutralization precipitation, sulfide precipitation, iron salt precipitation, ion exchange, adsorption, bioflocculation, electrolysis, and me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/54C02F1/52C02F1/56C02F1/66C02F101/20C02F101/22
CPCC02F1/54C02F1/5236C02F1/56C02F1/66C02F2101/20C02F2101/203C02F2101/206C02F2101/22
Inventor 徐金龙季宏飞蒲明东
Owner HENGLI ELETEK
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