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Compound sponge for heavy mental sewage disposal and preparation method thereof

A technology of sewage treatment and composite sponge, which is applied in the fields of adsorption water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The effect of chelating ability, low energy consumption and efficient treatment

Active Publication Date: 2019-06-28
陕西福天宝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the loose porous structure and good water absorption of gelatin can increase the probability of contact between heavy metals in water and reactive active groups, but there are few studies on the use of gelatin for heavy metal wastewater treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A composite sponge for heavy metal sewage treatment, which is made of gelatin and cysteine ​​complex as a matrix, carboxymethyl chitosan and acrylic acid and acrylamide copolymer as graft branches, limestone as porogen and crosslinking The porous network composite sponge of the agent is prepared from the following raw materials in parts by weight: 10 parts of gelatin, 15 parts of cysteine, 15 parts of thioglycolic acid, 50 parts of carboxymethyl chitosan, 18 parts of acrylamide, 36 parts of Parts of acrylic acid and 10 parts of limestone, wherein the 10 parts of limestone include 5 parts of limestone with a particle size of 10-40 mesh and 5 parts of limestone with a particle size of 40-100.

[0043] Concrete preparation method is as follows:

[0044] (1) After mixing the cysteine ​​and thioglycolic acid in said parts by weight, dissolve them in deionized water, heat and stir at 40° C. to dissolve and obtain a mixture in which the mass percent concentration of cysteine ​...

Embodiment 2

[0051] A composite sponge for heavy metal sewage treatment, which is made of gelatin and cysteine ​​complex as a matrix, carboxymethyl chitosan and acrylic acid and acrylamide graft copolymer as branched chains, limestone as porogen and crosslinking The porous network composite sponge of the agent is prepared from the following raw materials in parts by weight: 15 parts of gelatin, 28 parts of cysteine, 28 parts of thioglycolic acid, 100 parts of carboxymethyl chitosan, 34 parts of acrylamide, 68 parts Parts of acrylic acid and 18 parts of limestone, wherein 18 parts of limestone includes 9 parts of limestone with a particle size of 10-40 mesh and 9 parts of limestone with a particle size of 40-100 mesh.

[0052] The specific preparation method is as follows:

[0053] (1) After mixing the cysteine ​​and thioglycolic acid in said parts by weight, dissolve them in deionized water, heat and stir at 50° C. to dissolve to obtain a mixed solution with a concentration of 30% by mass ...

Embodiment 3

[0060] A composite sponge for heavy metal sewage treatment, which is made of gelatin and cysteine ​​complex as a matrix, carboxymethyl chitosan and acrylic acid and acrylamide graft copolymer as branched chains, limestone as porogen and crosslinking The porous network composite sponge of the agent is prepared from the following raw materials in parts by weight: 20 parts of gelatin, 30 parts of cysteine, 30 parts of thioglycolic acid, 150 parts of carboxymethyl chitosan, 50 parts of acrylamide, 100 parts Parts of acrylic acid and 26 parts of limestone, wherein the 26 parts of limestone include 13 parts of limestone with a particle size of 10-40 mesh and 13 parts of limestone with a particle size of 40-100 mesh.

[0061] The specific preparation method is as follows:

[0062] (1) After mixing the cysteine ​​and thioglycolic acid in said parts by weight, dissolve them in deionized water, heat and stir at 60° C. to dissolve, and obtain a mixed solution with a mass percentage conce...

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Abstract

The invention discloses a compound sponge for heavy mental sewage disposal and a preparation method thereof. The compound sponge is a porous reticulated compound sponge which adopts gelatin and a cysteine compound as substrates, carboxymethyl chitosan and a polymer of acrylic acid and acrylamide as grafting branches and limestone as a pore-foaming agent and a crosslinking agent. The compound sponge is specifically prepared from, by weight, 10-20 parts of gelatin, 15-30 parts of cysteine, 15-30 parts of mercaptoacetic acid, 50-150 parts of carboxymethyl chitosan, 18-50 parts of acrylamide, 36-100 parts of acrylic acid and 10-26 parts of limestone. The source of raw materials of the compound sponge is wide, and the compound sponge has the advantages that the cost is low and no secondary pollution can be caused to water. Moreover, the preparation process is simple and easy to implement, the removal rate of heavy metal in high-concentration heavy metal pollution sewage reaches 99% or above, and the effect of efficiently disposing the heavy metal pollution sewage at the low cost is achieved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a composite sponge for heavy metal sewage treatment and a preparation method thereof. Background technique [0002] With the rapid development of industrial and agricultural economy, the discharge of wastewater is increasing day by day. A large amount of industrial wastewater containing heavy metals and urban domestic sewage are discharged into the environment, causing serious pollution to the atmosphere, soil and water environment. The type, content and existing form of heavy metals in wastewater vary greatly with different production types. Heavy metals have the characteristics of concealment, persistence, and non-degradability. Once produced, they will exist in the environment for a long time and accumulate continuously. threaten. [0003] At present, due to the non-degradability of heavy metals, the treatment method of heavy metals is to transfer the existing position of hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08F289/00C08F251/00C08F220/06C08F220/56C02F1/28C02F101/20C08L51/00C08L51/02
Inventor 刘华
Owner 陕西福天宝环保科技有限公司
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