Method for treating industrial wastewater

Abstract

The invention discloses a method for treating industrial wastewater. The method includes sequentially treating the wastewater by the aid of a water collecting well, a coarse grid, a primary sedimentation tank, a pH (potential of hydrogen) value regulating tank, a plant far-infrared irradiation, enrichment and lead removal device, a nitration reaction tank, a biological nitrogen removal tank, a secondary sedimentation tank and a water purification tank. The method has the advantages that biological characteristics that lead ions in water can be absorbed and enriched by bidens maximowicziana are creatively utilized, and bidens maximowicziana plants are preliminarily treated, so that root systems of the bidens maximowicziana plants can vigorously grow; the wastewater with lead is delivered to the root systems of the bidens maximowicziana, the root systems are stimulated by means of far-infrared irradiation, the lead ions in the wastewater can be quickly and efficiently enriched and absorbed by the bidens maximowicziana under the conditions, and accordingly the purpose of removing the lead in the wastewater can be achieved; full-automatic plant replacement and regeneration programs are further creatively designed, and accordingly human and material resources can be obviously saved.

Description

technical field [0001] The invention relates to a treatment method for removing lead in electroplating wastewater, which belongs to the field of wastewater treatment in environmental protection. Background technique [0002] Electroplating wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater to humans. Most of the metal ions and their compounds are easily absorbed by suspended particles in the water and precipitated in the sediment layer at the bottom of the water, polluting the water body for a long time. Certain heavy metals and their compounds can accumulate, accumulate and participate in the biosphere cycle in fish and other aquatic organisms and crop tissues. [0003] The harm of heavy metal pollution to the environment and human beings has become increasingly known to people. With the further implementation of the global sustainable development strategy, the requirements for the treatment of electroplating wast...

AI Technical Summary

Problems solved by technology

The biological flocculation method is safe, convenient, non-toxic, does not produce secondary pollution, and has a good flocculation effect; however, there are still problems such as high production costs, difficulty in storing live flocculants, and difficulty in industrial production. Most biological flocculants are still in the Exploration phase

[0013] At present, the existing lead-containing electroplating wastewater treatment methods have disadvantages such as high cost, complex technology, large floor area, high energy consumption and low reuse rate.

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