A Nanocrystalline Magnetic Coagulation Equipment for Heavy Metal Wastewater Treatment

Abstract

The invention discloses nanocrystalline magnetic coagulation equipment for heavy metal wastewater treatment, the equipment comprises a mixing box, a sedimentation tank and a magnetic seed separator, the lower end of the mixing box is connected with the sedimentation tank, a valve is installed at the lower end of the mixing box, the discharging end of the sedimentation tank is connected with a sludge conveying pipe, and the middle of the sludge conveying pipe is connected with a sludge conveying pump, the magnetic seed separator is located on the lower side of the end of the sludge conveying pipe, the output end of the magnetic seed separator is connected with a discharging pipe, the end of the discharging pipe is rotationally connected with a guide plate, and a feeding box is arranged on the upper side of the mixing box. According to the invention, heavy metals are removed by mixing the magnetic seeds, a flocculating agent and wastewater, and the magnetic seeds are recycled by the magnetic seed separator; reciprocating rotation of a rotating rod is realized through rotation of a gear I, and left-right movement of a moving plate realizes uniform distribution of the magnetic seeds and the flocculating agent in the mixing box and uniform mixing of the magnetic seeds and wastewater, and thorough removal of heavy metals is guaranteed.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a nanocrystalline magnetic coagulation device for heavy metal waste water treatment. 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 wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater to human beings. Heavy metals in wastewater generally cannot be decomposed and destroyed, but can only transfer their existing positions and change their physical and chemical forms. The treatment method is to reform the production process first, and use no or less toxic heavy metals. Chemical precipitation and ion exchange methods are often used for on-site treatment at the production site. The heavy metals i...

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Problems solved by technology

[0003] Magnetic coagulation high-efficiency precipitation technology creatively uses fine and super-heavy magnetic powder as the flocculation nucleus, which has achieved a new generation of high-efficiency precipitation with fast precipitation speed, good precipitation effect, better phosphorus removal effect, and low treatment cost Clarification technology, but the following problems exist in the traditional heavy metal wastewater treatment process: the magnetic species in the flocs cannot be separated and exported in time for reciprocating use; the magnetic species and flocculants cannot fully contact with the wastewater to treat the heavy metals in the wastewater

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