Industrial wastewater treatment system

Abstract

The invention discloses an industrial wastewater treatment system mainly used for purifying and treating lead in electroplating wastewater. The system comprises a water-collecting well, a coarse grid, a primary settling pond, a pH value adjusting pond, a plant far-infrared irradiation enrichment lead removing device, a nitration reaction pond, a biological denitrification pond, a secondary settling pond and a water purifying pond. The system creatively uses the biological characteristic that bidens maximowicziana is capable of absorbing and enriching lead ions in water, bidens maximowicziana plants are pretreated so that plant root systems can grow flourishingly, the wastewater containing lead is conveyed to the bidens maximowicziana root systems, the root systems are irradiated with far infrared to be stimulated, and under the condition, bidens maximowicziana fast and efficiently enrich and absorb the lead ions in the waste water to remove lead in the wastewater. Meanwhile, the system creatively designs a full-automatic plant replacing and regenerating program and remarkably saves manpower and material resources.

Description

technical field [0001] The invention relates to a treatment system 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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