Equipment and process for low-temperature plasma-biochemical synergistic treatment of lead-zinc ore beneficiation wastewater

By employing a low-temperature plasma-biochemical synergistic treatment process, combined with a deep impurity removal unit, the problem of removing flotation reagents and foaming substances from lead-zinc ore beneficiation wastewater has been solved, achieving zero discharge and efficient reuse of wastewater, and improving beneficiation efficiency and water quality.

CN120817701APending Publication Date: 2025-10-21HENAN POLYTECHNIC UNIV +1
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Patent Information

Application Number
CN202511227040.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-29
Publication Date
2025-10-21

AI Technical Summary

Technical Problem

Existing technologies cannot effectively remove flotation reagents and foaming substances from lead-zinc ore beneficiation wastewater, which can affect beneficiation efficiency or cause environmental pollution when the wastewater is reused. Traditional methods also suffer from problems such as reagent poisoning, high cost, and low efficiency.

Method used

The process employs a low-temperature plasma-biochemical synergistic treatment technology, combined with a deep impurity removal unit, including a thickener, a low-temperature plasma degradation tank, a biochemical tank, a filter, and an air flotation mechanism. The low-temperature plasma degrades flotation reagents and foaming substances, while the biochemical treatment removes residual reagents, enabling the wastewater to meet standards for reuse.

Benefits of technology

It achieves zero wastewater discharge and efficient reuse, with effluent quality superior to existing technologies, meeting the needs of mineral processing production and ensuring mineral processing efficiency and environmental safety.

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Abstract

The invention relates to the technical field of beneficiation wastewater reuse, in particular to equipment for low-temperature plasma-biochemical cooperative treatment of lead-zinc ore beneficiation wastewater. Comprising a solid-liquid separation unit, a plasma degradation pool, an air floatation unit, a reaction unit, a filtering unit, a biochemical treatment module, a chemical mixing unit, a sludge storage unit, a mud-water separation unit and a sludge recovery unit. A flotation reagent is pretreated and degraded through a low-temperature plasma technology, and the biochemical load is reduced; residual chemicals are deeply degraded by a biochemical technology, and the COD (Chemical Oxygen Demand) of final effluent is less than or equal to 20mg / L and meets the recycling standard; and meanwhile, an air flotation mechanism is arranged in the low-temperature plasma degradation tank, so that foaming substances and light suspended matters are synchronously removed while a non-degradable flotation reagent in the wastewater is preliminarily removed.
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Citation Information

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