Method and device for removing phosphorous from glyphosate production wastewater

A technology for the production of wastewater and glyphosate, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of insufficient phosphorus removal in wastewater, unfavorable enterprise costs, consumption of hydrogen peroxide, etc. problem, to avoid the effect of excessive local concentration

Inactive Publication Date: 2012-08-08
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The core technology of the above methods is Fenton oxidation followed by precipitation and phosphorus removal, which can effectively remove organic phosphorus in glyphosate production wastewater, reduce the COD value of wastewater, and provide technical means for the treatment of glyphosate production wastewater , but the above method also has the following disadvantages: (1) in the Fenton catalytic oxidation process, ferrous salt and hydrogen perox

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 and device for removing phosphorous from glyphosate production wastewater
  • Method and device for removing phosphorous from glyphosate production wastewater
  • Method and device for removing phosphorous from glyphosate production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The effluent from a company's glyphosate production site has a high concentration of organic phosphorus, poor biodegradability, and difficult treatment. The composition of water quality and quantity is shown in Table 1.

[0037] Table 1 Water quality analysis table of glyphosate wastewater

[0038] name of waste water

Wastewater volume (t / d)

COD (mg / L)

TP (mg / L)

Floor washing wastewater

200

3000

2500

Melting wastewater

80

≤10

150

Sanhua Tail Gas Absorption Wastewater

40

≤10

1700

Mother liquor concentrated condensate wastewater

240

650

150

Belt filter press for flushing waste water

80

400

40

Dimethyl ester synthesis wastewater

200

1500

40

Chloromethane washing wastewater

200

2000

≤1

Finished product warehouse wastewater

200

400～700

...

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

No PUM Login to view more

Abstract

The invention discloses a method and a device for removing phosphorous from glyphosate production wastewater, and belongs to the field of wastewater treatment. The method comprises the steps as follows: adjusting the pH value of the wastewater to be 2-3, adding a ferrous salt A for uniformly mixing, then adding hydrogen peroxide for performing catalytic oxidation reaction, after the catalytic oxidation reaction is ended, adding a calcium salt for performing one-stage sedimentation, separating to remove sediments, and adding a ferrous salt B for performing two-stage sedimentation. The device for realizing the method comprises an adjusting pond, a homogenizing pond, a catalytic oxidation pond, a first sedimentation pond and a second sedimentation pond, which are communicated through a pipeline with a pump in sequence. The method and the device are used for treating the glyphosate production wastewater, and have the characteristics of thoroughly removing the phosphorous, effectively utilizing a catalyst and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method and device for removing phosphorus from glyphosate production wastewater. Background technique [0002] Glyphosate is a broad-spectrum herbicide, its scientific name is N-(phosphonomethyl) glycine, N-(phosphonomethyl) glycine, and it is an organophosphorus herbicide. According to the different production raw materials, the production methods of glyphosate mainly include two different production processes: iminodiacetic acid (IDA) method and glycine method. The IDA method mainly uses iminodiacetic acid as raw material. Glyphosate, the glycine method is also called the dialkyl phosphite method. The main raw materials for the production of glyphosate by the glycine method are ethylene glycol, caustic soda, deionized water, hydrochloric acid, formaldehyde, phosphorus trichloride, and 30% liquid caustic soda , heavy metal catalysts, hydrogen peroxide, sodium tungsta...

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
IPC IPC(8): C02F9/04
Inventor 吴康跃梅荣武韦彦斐沈浙萍许青兰
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap