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Agent for removing heavy metal ions in water and preparation method thereof

A technology for removing heavy metal ions and water, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of complicated and expensive methods of use, and the cost of easily producing toxic and harmful gases, so as to achieve easy promotion and use, Inexpensive effect

Active Publication Date: 2016-08-24
中关村科技租赁股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problems of complex usage methods, easy generation of poisonous and harmful gases and high cost of existing medicaments for removing heavy metal ions in water, and provides a medicament for removing heavy metal ions in water and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh the raw materials according to the following weight (unit: KG): 2 parts of natural weathered coal, 1 part of 30% sodium hydroxide solution.

[0015] Crush weathered coal into particles, react with 30% sodium hydroxide solution at 70°C for 7.5 hours; after clarification, take the supernatant and filter, heat to 50°C in the reactor under nitrogen protection, and polymerize for 3 hours , The polymer is taken out, dried and crushed to make a finished medicine.

Embodiment 2

[0017] Weigh the raw materials according to the following weights (unit: KG): 2 parts of natural weathered coal, 1 part of 35% sodium hydroxide solution.

[0018] Crush weathered coal into particles, react with 35% sodium hydroxide solution at 60°C for 5 hours; after clarification, take the supernatant and filter, heat to 55°C in the reactor under nitrogen protection, and polymerize for 2 hours , The polymer is taken out, dried and crushed to make a finished medicine.

Embodiment 3

[0020] Weigh the raw materials according to the following weight (unit: KG): 2 parts of natural weathered coal, 1 part of 40% sodium hydroxide solution.

[0021] Crush weathered coal into particles, react with 40% sodium hydroxide solution at 80°C for 10 hours; after clarification, take the supernatant and filter, heat to 60°C in the reactor under the protection of nitrogen, and polymerize for 2.5 hours , The polymer is taken out, dried and crushed to make a finished medicine.

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PUM

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Abstract

The invention relates to sewage treatment agents, in particular to a preparation method and use of an agent for removing heavy metal ions from water. According to the technical scheme, the agent comprises the following raw materials in part by weight: 2 parts of natural weathered coal and 1 part of 30-50% of a sodium hydroxide solution. The preparation method comprises the following steps: (1) grinding the natural weathered coal; (2) carrying out a reaction between the ground weathered coal and the sodium hydroxide solution at the temperature of 60-80 DEG C for 5-10 h; (3) clarifying the reaction solution, sucking supernatant, and filtrating the supernatant for later use; (4) heating the filtrated supernatant which is protected by nitrogen to 50-60 DEG C in a reaction vessel to realize a polymerization reaction for 2-3 h; (5) taking out the polymer for drying. The preparation method has the advantages as follows: (1) adjusting the pH value in water is avoided when the agent is in use, and the agent can be directly put in water containing the heavy metal ions; (2) no toxic and harmful gas is generated after a coagulation reaction; (3) the weathered coal taken as a raw material is cheap, so that the preparation method provided by the invention is suitable for popularization and application.

Description

technical field [0001] The invention relates to a sewage treatment agent, in particular to a preparation method and application of an agent for removing heavy metal ions in water. Background technique [0002] In the treatment of wastewater containing heavy metals, precipitation agents are put into water to precipitate them, and then separated and removed. The agents used for precipitation generally have the following types: 1. Use hydroxide to adjust the pH value to make the heavy metal ions in the water react to form hydroxide precipitates and remove them; 2. Use the method of adding sulfide to make them react to form sulfide precipitates and remove them; 3. Use the method of adding organic sulfide to make it react to form organic sulfide and remove it after precipitation. However, the above medicaments all have disadvantages: 1. Use hydroxide to remove heavy metal ions, the process is complicated, and the pH value needs to be adjusted multiple times; 2. Use sulfide to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/62
CPCC02F1/5263C02F2101/20
Inventor 辛兵
Owner 中关村科技租赁股份有限公司