Treatment system for removing lead from electroplating wastewater

A technology of electroplating wastewater and treatment system, applied in metallurgical wastewater treatment, neutralized water/sewage treatment, multi-stage water/sewage treatment, etc. The effect of improving processing capacity, low operation and maintenance costs, and improving reaction efficiency

Inactive Publication Date: 2016-07-13
珠海市鸿域注塑有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[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.

Method used

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  • Treatment system for removing lead from electroplating wastewater
  • Treatment system for removing lead from electroplating wastewater

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Embodiment Construction

[0026] Such as figure 1The shown treatment system for removing lead in electroplating wastewater includes 1-collection well, 2-coarse grid, 3-primary sedimentation tank, 4-pH value adjustment tank, 5-biological fermentation-precipitation reaction purification system, 6 -Aerobic biological filter, 7-Secondary sedimentation tank, 8-Water purification tank, etc.; Among them, the lead-containing electroplating wastewater enters the water collection well 1 through the waste water pipeline, where centralized collection and preliminary stable adjustment are carried out, and the outlet of the water collection well 1 The coarse grid 2 is connected through the waste water pipeline, and the large-diameter solid matter in the waste water is removed here. The outlet of the coarse grid 2 is connected with the primary sedimentation tank 3 through the waste water pipeline, and the insoluble matter in the waste water is further removed here, and the primary sedimentation tank 3 The outlet is c...

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Abstract

The invention discloses a treatment system for removing lead from electroplating wastewater. The treatment system comprises a water collecting well, a coarse screen, a primary precipitation tank, a pH value adjusting tank, a biological fermentation-precipitation reaction purification system, an aerobic bio-filter, a secondary precipitation tank and a clear water tank. According to the system, the biological fermentation characteristic of xanthomonas is creatively utilized, in the presence of D-glucose, the inside of the xanthomonas is subjected to a lactonization reaction, L-ascorbic acid (vitamin C) is produced through fermentation finally, then characteristics that the L-ascorbic acid can be combined with lead ions and water-insoluble and non-toxic salts are produced are utilized, and the lead ions in the electroplating wastewater can be removed through a precipitation process. Meanwhile, L-ascorbic acid produced by D-glucose subjected to a biological fermentation reaction is used, the cost is far lower than direct addition of L-ascorbic acid to the wastewater, and the material cost of wastewater treatment can be greatly reduced.

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] With the development of society, a large amount of untreated heavy metal wastewater is directly discharged into natural water bodies, causing great harm. Among them, pollution accidents caused by heavy metal lead are more prominent. In 2010 alone, nine blood lead incidents occurred in China. Both lead ions and soluble lead salts are toxic and can be harmful to human health and plant growth. It can poison people's nervous system and hematopoietic system, causing convulsions, neurasthenia and anemia, etc., especially affecting the development of children. Therefore, the "Drinking Water Sanitation Standard" (GB5749-2006) adjusts the lead ion content to 0.01mg / L, while the "Lead and Zinc Industrial Pollutant Discharge Standard" (GB25466-2010) stipulates th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/16
CPCC02F1/001C02F1/66C02F3/02C02F9/00C02F2001/007C02F2103/16
Inventor 叶澄
Owner 珠海市鸿域注塑有限公司
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