Heavy-metal waste water treatment device

Abstract

The invention discloses a heavy metal waste water treatment device. The device comprises a sewage tank (1). A first PH regulation tank (3) connected through a pipeline (2) is arranged on a side of the sewage tank (1). The other side of the PH regulation tank (3) is connected with one side of a water distribution tank (4) through a pipeline (2). A sedimentation tank (5) is arranged below the water distribution tank (4). The sedimentation tank (5) is connected with the water distribution tank (4) through water distribution holes (6) on the bottom of the water distribution tank (4). A weir port (7) is provided on the upper part on a side wall on the other end of the sedimentation tank (5). The weir port (7) is connected with a second PH regulation tank (8) on the other side of the sedimentation tank (5) through a pipeline (2). The other side of the second PH regulation tank (8) is sequentially connected with a quartz sand filtering tank (9), an active carbon adsorption tank (10), and a clear water tank (11) through pipelines (2). The entire structure of the device provided by the invention can adopt an integral design. The device has the advantages of small land occupation and low cost, and is suitable to be applied by various sewage-discharging enterprises.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to the treatment of waste water or sewage, in particular to a treatment device for heavy metal waste water. Background technique [0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal (such as cadmium, nickel, mercury, zinc, etc.) wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater to humans, and its water quality and quantity are related to the production process. The heavy metals in wastewater cannot be decomposed and destroyed by various common methods, but can only transfer their location and change their physical and chemical forms. For example, after chemical precipitation treatment, heavy metals in wastewater are transf...

AI Technical Summary

Problems solved by technology

At present, serious environmental pollution accidents frequently occur in waste water containing heavy metals, and the current treatment process and equipment for waste water containing lead cannot strictly guarantee long-term compliance. Usually, the pH cannot meet the requirements of precipitation or the effluent meets the standard, and the precipitation effect is not good, resulting in heavy metal pollution. Ions or suspended solids are not up to standard, and they often fail to meet the standard due to human installation factors and later use time during use

Especially for a small amount of heavy metal-containing wastewater, the equipment system occupies a large area, requires a lot of investment, troublesome maintenance, and little income

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