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Method for preparing high-molecular heavy metal flocculating agent

A heavy metal and flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc. and other problems, to achieve the effect of scientific charge layout, wide application range, and reduction of heavy metal content

Active Publication Date: 2017-08-15
绍兴金冶环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition of heavy metal wastewater, large concentration differences, and strict treatment standards, the traditional treatment technology has problems such as large amount of treatment agent, high energy consumption, difficult control of reaction, slow reaction, unsatisfactory effect, poor water quality, and unstable residue. and the difficulty of recycling precious metals

Method used

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  • Method for preparing high-molecular heavy metal flocculating agent
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  • Method for preparing high-molecular heavy metal flocculating agent

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A kind of preparation method of polymer heavy metal flocculant, its preparation steps are as follows:

[0033] Step 1, put sodium carboxymethyl cellulose into the reaction kettle, then add sodium chloride solution and stir to form a constant temperature water bath reaction system;

[0034] Step 2, adding vinyl polyamine, internal initiator, and crosslinking agent into the reaction kettle, stirring and reacting at a constant temperature for 6 hours, and standing at a constant temperature for 2 hours to obtain a viscous liquid;

[0035] Step 3, open the reaction kettle, add acrylamide, carry out constant temperature heating reaction under nitrogen condition for 3 hours, at the same time add the lye of external initiator dropwise, stir for 1 hour after the reaction is completed, and let it stand for cooling;

[0036] Step 4, on the basis of step 3, slowly add carbon disulfide dropwise, stir in a constant temperature water bath for 1-3 hours, add absolute ethanol after cool...

Embodiment 2

[0050] A kind of preparation method of polymer heavy metal flocculant, its preparation steps are as follows:

[0051] Step 1, put sodium carboxymethyl cellulose into the reaction kettle, then add sodium chloride solution and stir to form a constant temperature water bath reaction system;

[0052] Step 2, adding vinyl polyamine, internal initiator, and crosslinking agent into the reaction kettle, stirring and reacting at a constant temperature for 8 hours, and standing at a constant temperature for 4 hours to obtain a viscous liquid;

[0053] Step 3, open the reaction kettle, add acrylamide, carry out constant temperature heating reaction under nitrogen condition for 5 hours, add the lye of external initiator at the same time, stir for 3 hours after the reaction is completed, and let it stand for cooling;

[0054] Step 4, on the basis of step 3, slowly add carbon disulfide dropwise, stir in a constant temperature water bath for 3 hours, add absolute ethanol after cooling, rapid...

Embodiment 3

[0068] A kind of preparation method of polymer heavy metal flocculant, its preparation steps are as follows:

[0069] Step 1, put sodium carboxymethyl cellulose into the reaction kettle, then add sodium chloride solution and stir to form a constant temperature water bath reaction system;

[0070] Step 2, adding vinyl polyamine, internal initiator, and crosslinking agent into the reaction kettle, stirring and reacting at a constant temperature for 7 hours, and standing at a constant temperature for 3 hours to obtain a viscous liquid;

[0071] Step 3, open the reaction kettle, add acrylamide, carry out constant temperature heating reaction under nitrogen condition for 4 hours, add the lye of external initiator at the same time, stir for 2 hours after the reaction is completed, and let it stand for cooling;

[0072] Step 4, on the basis of step 3, slowly add carbon disulfide dropwise, stir in a constant temperature water bath for 2 hours, add absolute ethanol after cooling, rapid...

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Abstract

The invention discloses a method for preparing a high-molecular heavy metal flocculating agent. The method comprises the following steps: taking sodium carboxymethylcellulose as a raw material, and carrying out a water bath amination reaction with vinyl polyamine, an internal initiator and a cross-linking agent under the condition of a sodium chloride solution; and carrying out a branched chain grafting reaction with acrylamide and an initiator under nitrogen protection, performing suction filtration, washing, and drying, thereby obtaining the high-molecular heavy metal flocculating agent. The method disclosed by the invention is simple and convenient, the flocculating agent is excellent in effect, convenient for immobilized treatment and heavy metal recovery and stable in chemical performance, and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method of a polymer heavy metal flocculant. Background technique [0002] Trace amounts of heavy metal elements are essential to human health, but if there are too many heavy metal pollutants in the environment, it will cause great harm to the human body, and heavy metal pollution is especially harmful to people at the end of the food chain. Heavy metals can strongly interact with proteins and various enzymes in the human body, making them inactive, and may also accumulate in certain organs of the human body. If the human body exceeds the tolerance limit, it will cause acute poisoning, Subacute poisoning, chronic poisoning, etc., will cause great harm to the human body. For example, Minamata disease (mercury pollution) and bone pain disease (cadmium pollution) and other public nuisance diseases that occurred in Japan are all caused by heavy metal...

Claims

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Application Information

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IPC IPC(8): C08F8/14C08F8/34C08F251/02C08F220/56C08B11/20C02F1/54C02F1/52C02F101/20
CPCC02F1/5236C02F1/54C02F2101/20C08B11/20C08F8/14C08F8/34C08F251/02C08F220/56
Inventor 杨林冷志平
Owner 绍兴金冶环保科技有限公司
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