Process for treating wastewater in copper industry by using polymeric ferric sulfate

A polymeric ferric sulfate and composite treatment technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of low copper removal efficiency and achieve high removal rate Effect

Active Publication Date: 2016-06-22
JIANGSU GUOSONG ENVIRONMENT SCI & TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art that the removal efficiency of copper in wastewater is low, and to provide a process for treating wastewater from the copper industry with polyferric sulfate

Method used

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  • Process for treating wastewater in copper industry by using polymeric ferric sulfate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First, the flocculant polyferric sulfate and bentonite are mixed to form a composite treatment agent; then the prepared composite treatment agent is added to the copper industry wastewater, stirred and reacted for 5 minutes, and precipitated after the reaction is completed for 5 minutes, and finally solid-liquid separation is carried out. The flocculant polymeric ferric sulfate is a solution with a mass fraction of polymeric ferric sulfate of 5%, and the mass ratio of the bentonite to the polymeric ferric sulfate is 4:10. The mass-volume ratio of polyferric sulfate to the copper wastewater in the composite treatment agent is 10 mg / L. The pH of the wastewater was adjusted to 6 before the composite treatment agent was added to the wastewater from the copper industry. Finally, the treated water is taken for testing.

Embodiment 2

[0017] First, the flocculant polymerized ferric sulfate and bentonite are mixed to form a composite treatment agent; then the prepared composite treatment agent is added to the copper industry wastewater, stirred and reacted for 1 minute, and precipitated after the reaction is completed for 1 minute, and finally solid-liquid separation is carried out. The flocculant polymeric ferric sulfate is a solution with a mass fraction of polymeric ferric sulfate of 20%, and the mass ratio of the bentonite to the polymeric ferric sulfate is 1:10. The mass volume ratio of polyferric sulfate to the copper wastewater in the composite treatment agent is 30 mg / L. The pH of the wastewater was adjusted to 8 before the composite treatment agent was added to the wastewater from the copper industry. Finally, the treated water is taken for testing.

Embodiment 3

[0019] First, the flocculant polymerized ferric sulfate and bentonite are mixed to form a composite treatment agent; then the prepared composite treatment agent is added to the copper industry wastewater, stirred and reacted for 1 minute, and precipitated after the reaction is completed for 1 minute, and finally solid-liquid separation is carried out. The flocculant polymeric ferric sulfate is a solution with a mass fraction of polymeric ferric sulfate of 10%, and the mass ratio of the bentonite to the polymeric ferric sulfate is 1:5. The mass-volume ratio of polyferric sulfate to the copper wastewater in the composite treatment agent is 10 mg / L. The pH of the wastewater was adjusted to 7 before the composite treatment agent was added to the wastewater from the copper industry. Finally, the treated water is taken for testing.

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Abstract

The invention belongs to the field of wastewater treatment and discloses a process for treating wastewater in the copper industry by using polymeric ferric sulfate. The process comprises steps as follows: firstly, a flocculant, namely, polymeric ferric sulfate, is mixed with bentonite to form a compound treating agent; the prepared compound treating agent is added to the wastewater in the copper industry and stirred for a reaction, precipitation is performed after the reaction ends, and finally, solid-liquid separation is performed. The process has the benefits as follows: through compounding of bentonite and polymeric ferric sulfate, copper in the wastewater in the copper industry can be effectively removed under the synergistic effect of bentonite and polymeric ferric sulfate; compared with the single effect of bentonite or polymeric ferric sulfate, the removal rate is high, and the emission standard is met.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a process for treating copper industry waste water with polyferric sulfate. Background technique [0002] The pollution of water resources in Quanqing is quite serious, but the treatment of water pollution is seriously lagging behind, which affects the sustainable use of water resources and the safety of water resources. After various pollutants enter the water body, the water quality will deteriorate and the use value of water will be reduced. Wastewater containing more copper is undoubtedly electroplating wastewater and copper smelting wastewater. The wastewater contains high content, which seriously pollutes the environment and endangers human health. It must be treated and discharged up to the standard. However, in the prior art, the removal efficiency of copper in wastewater is relatively low. Contents of the invention [0003] The purpose of the present ...

Claims

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Application Information

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IPC IPC(8): C02F1/52
CPCC02F1/5236
Inventor 何旭红周国峰
Owner JIANGSU GUOSONG ENVIRONMENT SCI & TECH DEV CO LTD
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