Environment-friendly heavy metal wastewater treating agent and preparation method thereof

Abstract

The invention relates to an environment-friendly heavy metal wastewater treatment agent and a preparation method thereof, comprising: water, β-cyclodextrin, plant polyphenols, sodium polyacrylate, calcium hypochlorite, organic silicon, dipotassium hydrogen phosphate, magnesium hydroxide, Iron oxide, sodium sulfate, chitosan, epichlorohydrin. The environmental-friendly heavy metal wastewater treatment agent of the present invention has fast reaction speed, high stability in the reagent treatment process, good solid-liquid separation effect, and can promote the transformation of heavy metals from a high bioavailable state to a low bioavailable state, thereby reducing the effective concentration of heavy metals in water bodies. It can also effectively inhibit the accumulation and transfer of heavy metals in crops, and reduce the toxicity of heavy metals.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an environment-friendly heavy metal wastewater treatment agent and a preparation method thereof. Background technique [0002] Existing heavy metal wastewater mostly contains: heavy metal ions such as copper, chromium, cadmium, zinc, nickel, etc., and the treatment agent mostly uses sodium sulfide as the main liquid substance. Due to the large amount of sulfur added, and the control of the end point is very difficult, resulting in The sulfur exceeds the standard, and the odor increases. And for the water treatment system that needs to reduce the COD biochemical system, the addition of a large amount of sulfur will greatly reduce the survival rate and effectiveness of the bacteria in the biochemical process, which seriously hinders the standard treatment of COD. In addition to the impact on the COD treatment effect, its excessive discharge will also cause grea...

AI Technical Summary

Problems solved by technology

[0002] Existing heavy metal wastewater mostly contains: heavy metal ions such as copper, chromium, cadmium, zinc, nickel, etc., and the treatment agent mostly uses sodium sulfide as the main liquid substance. The sulfur exceeds the standard, and the odor increases

And for the water treatment system that needs to reduce the COD biochemical system, the addition of a large amount of sulfur will greatly reduce the survival rate and effectiveness of the bacteria in the biochemical process, which seriously hinders the standard treatment of COD

In addition to the impact on the COD treatment effect, its excessive discharge will also cause great harm to the external water body.

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