Treatment method for wastewater containing organic matters during production of N-phenyl maleimide

A technology of maleimide and production process, applied in the field of treatment of wastewater containing organic matter, can solve problems such as environmental pollution, impact on human health, human survival crisis, etc., and achieve the effects of simple operation and low cost

Active Publication Date: 2015-05-13
SHANGHAI CHEM REAGENT RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production process of N-phenylmaleimide, waste water containing organic matter such as N-phenylmaleimide and maleic acid will inevitably be produced, wherein N-phenylmaleimide is contained in waste water The content of maleic acid reaches 2-5wt%, the content of maleic acid in wastewater reaches 3-8wt%, pH=4-5, if this kind of wastewater is discharged directly into the anaerobic tank without treatment, the content of organic matter is very high, it will be harmful to The environment causes serious pollution, which affects the health of the human body, and the crisis of human survival
[0003] In order to protect the environment and control the discharge of pollution, the state has stipulated the standard for the allowable discharge concentration of wastewater, requiring harmless treatment before the discharge of industrial wastewater, that is, the industrial wastewater containing organic matter generated during the production process should be targeted. Discharge into the anaerobic pond after organic matter is removed, to effectively control the indicator of waste water discharge, there is no relevant report on the treatment method of waste water containing organic matter in the production process of N-phenylmaleimide in the prior art

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
  • Treatment method for wastewater containing organic matters during production of N-phenyl maleimide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The waste water (wherein N-phenylmaleimide content is 2wt%, and maleic acid content is 3wt%, pH=4) containing organic matter in 1000g N-phenylmaleimide production process is at 20 ℃, Pass through the treatment column that 2000g 732 cation exchange resins are housed with the speed of 10ml / min under the condition of 0.15MPa, then pass through the treatment post that 2000g macroporous weakly basic resin is housed with the same pressure condition and speed, will obtain to remove organic matter Wastewater is discharged into the anaerobic pond for routine treatment. The test results of wastewater show that the wastewater COD before treatment Cr The value is greater than 50000mg / L (theoretical value), the chemical oxygen demand COD of the organic matter in the treated wastewater cr 95mg / L, biochemical oxygen consumption BOD 5 It is 25mg / L.

Embodiment 2

[0020] The waste water (wherein N-phenylmaleimide content is 5wt%, and maleic acid content is 8wt%, pH=5) containing organic matter in 1000g 5% N-phenylmaleimide production process is at 40 Under the conditions of ℃ and 0.15MPa, pass through the treatment column equipped with 5000g 732 cationic resin at a rate of 10ml / min, and then pass through the treatment column equipped with 5000g macroporous weakly basic resin under the same pressure conditions and speed, and the organic matter will be removed. The waste water is discharged into the anaerobic pond for routine treatment. The test results of wastewater show that the wastewater COD before treatment Cr The value is greater than 140000mg / L (theoretical value), the chemical oxygen demand COD of the organic matter in the treated wastewater Cr 95mg / L, biochemical oxygen consumption BOD 5 It is 25mg / L.

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
oxygen consumptionaaaaaaaaaa
oxygen consumptionaaaaaaaaaa
Login to view more

Abstract

The invention discloses a treatment method for wastewater containing organic matters during production of N-phenyl maleimide. The method includes: enabling the wastewater containing organic matters under the condition of 20 DEG C-40 DEG C and 0.1-0.15Mpa at a rate of 10ml / min to pass through a treatment column filled with acidic resin, passing through the treatment column filled with the acidic resin under the same pressure condition and at the same rate, and discharging wastewater with the organic matters removed into an anoxic tank for conventional treatment. Test results show that chemical oxygen demand (CODcr) of the organic matters in the wastewater is 95mg / L, biochemical oxygen demand (BOD5) is 25mg / L, and discharging standards of water pollutant of petroleum refining industry are met. The treatment method for wastewater containing organic matters during production of N-phenyl maleimide is applicable to wastewater treatment of like products of N-phenyl maleimide with different substituted groups and suitable for continuous treatment of wastewater during industrial production.

Description

technical field [0001] The invention relates to a method for treating waste water containing organic matter in the production process of N-phenylmaleimide. Background technique [0002] N-phenylmaleimide (NPMI for short) is a heat-resistant organic monomer with a five-membered ring planar structure. Embedding it in a polymer chain can increase the internal rotation resistance of the chain, thereby improving the resistance of the material. Heat is one of the fine chemical products that are currently being developed in the world. At present, the main use of N-phenylmaleimide is as an ABS heat-resistant modifier, which can effectively improve the heat resistance, processability, compatibility and impact resistance of ABS resin. However, in the production process of N-phenylmaleimide, waste water containing organic matter such as N-phenylmaleimide and maleic acid will inevitably be produced, wherein N-phenylmaleimide is contained in waste water The content of maleic acid reach...

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 Patents(China)
IPC IPC(8): C02F9/14C02F1/42
Inventor 蒋旭亮顾慧娟宋振詹家荣
Owner SHANGHAI CHEM REAGENT RES INST
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