Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for treating organic wastewater

A treatment method and technology of organic wastewater, applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve difficult problems such as simple metal process and simultaneous consideration

Inactive Publication Date: 2019-01-15
TAIYUAN INST OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing treatment methods, it is difficult to take into account the efficient removal of metals and the simplicity of the process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for treating organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A treatment method for organic wastewater, using a cuboid graphite plate with a size of 7cm×3cm×2mm as the anode, a stainless steel sheet with a size of 7cm×3cm×2mm as the cathode, the distance between the cathode and the anode is 5.0cm, and the pH value of 250mL The organic wastewater of 2.0 is the electrolyte, and at normal temperature, the electrolysis is carried out at a voltage of 10.0V for 3.5h; the copper content in the organic wastewater is 1000mg / L, the lead content is 100mg / L, and the COD content is 8000mg / L.

[0029] By measuring the concentrations of copper ions, lead ions and COD in organic wastewater before and after electrolysis, the removal rates of copper ions, lead ions and COD can be obtained. The results are shown in Table 1.

Embodiment 2

[0031] A treatment method for organic wastewater, using a cuboid graphite plate with a size of 7cm×3cm×2mm as the anode, a stainless steel sheet with a size of 7cm×3cm×2mm as the cathode, the distance between the cathode and the anode is 3.0cm, and the pH value of 250mL The organic waste water of 2.5 is the electrolyte, and at normal temperature, the electrolysis is carried out at a voltage of 6.0V for 3.0 h; the copper content in the organic waste water is 5730 mg / L, the lead content is 430 mg / L, and the COD content is 10430 mg / L.

[0032] By measuring the concentrations of copper ions, lead ions and COD in organic wastewater before and after electrolysis, the removal rates of copper ions, lead ions and COD can be obtained. The results are shown in Table 1.

Embodiment 3

[0034]A method for treating organic wastewater, using a cuboid iridium-tantalum electrode with a size of 7cm×3cm×2mm as an anode, a stainless steel with a size of 7cm×3cm×2mm as a cathode, the distance between the cathode and the anode is 2.0cm, and the pH value of 250mL The organic waste water of 1.5 is the electrolyte, and at normal temperature, the electrolysis is performed at a voltage of 4.0V for 4.0 h; the copper content in the organic waste water is 10470 mg / L, the lead content is 930 mg / L, and the COD content is 14230 mg / L.

[0035] By measuring the concentrations of copper ions, lead ions and COD in organic wastewater before and after electrolysis, the removal rates of copper ions, lead ions and COD can be obtained. The results are shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
volumeaaaaaaaaaa
volumeaaaaaaaaaa
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for treating organic wastewater, and belongs to the technical field of sewage treatment. The method uses stainless steel as a cathode, one of iridium tantalum, a graphite plate or lead dioxide as an anode, organic wastewater as an electrolyte and performs electrolysis, in the organic wastewater, the copper content is 1000 to 15000 mg / L of copper, the lead content is100 to 1000 mg / L, and the COD (Chemical Oxygen Demand) content is 8000 to 15000 mg / L, and the volume of an electrolyte is 100 to 400 mL. The cathode reduces copper and lead in the organic wastewaterto a copper elemental substance and a lead elemental substance, and the copper elemental substance and the lead elemental substance are precipitated on the cathode; the oxygen evolution reaction of the anode can oxidize and remove the organic matter in the organic wastewater. According to the examples, by adopting the treatment method provided by the invention, for the organic wastewater, the removal rate of copper is 91.0 to 98.7%, the removal rate of lead is 80.0 to 87.1%, and the removal rate of COD is 74. 0 to 85.4%.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method for organic waste water. Background technique [0002] Wastewater containing metals is the most serious pollution to the environment, and it is also the most harmful to the human body. It is well known that if the body absorbs excessive amounts of metals, it can lead to poisoning with serious consequences. In some cases, metals can inhibit the activity of enzymes in the body, damage nerve tissue in a cytotoxic manner, and damage detoxification organs in the body, such as liver and kidney tissue. [0003] Studies have found that metal ions such as chromium, copper, lead, and nickel are extremely harmful to the human body. Copper is one of the essential trace elements in human life activities, but excessive copper is harmful to humans, animals and plants, and copper also has an important impact on the self-purification of water bodies. Therefore, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/30
CPCC02F1/4672C02F2101/30
Inventor 丁莉峰程军陈冲艳牛宇岚宋政伟薛笑莉王瞳张鑫龙赵俊亮董娅慧
Owner TAIYUAN INST OF TECH