Compound sponge for heavy mental sewage disposal and preparation method thereof

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...