Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for treating high concentration wastewater of oil refinery

A high-concentration, oil refinery technology, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problem that small molecular organic matter is difficult to completely remove, the effluent effect is difficult to meet the standard discharge, and the amount of oxidant is large, etc. problem, to achieve significant treatment effect, efficient and stable method, and less investment

Active Publication Date: 2012-02-29
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for refinery sewage, not only consumes a large amount of oxidant, which leads to higher costs, but also it is difficult to completely remove small molecular organic matter, and the effluent effect is difficult to meet the discharge standard

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 high concentration wastewater of oil refinery
  • Method for treating high concentration wastewater of oil refinery
  • Method for treating high concentration wastewater of oil refinery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The high-concentration sewage discharged from the refinery, after degreasing treatment, the COD is 5200mg / L, and the BOD is 800mg / L, which belongs to the high-concentration sewage that is difficult to treat biologically. Under the following conditions, the reactor volume is 15m 3 , water intake 5m 3 / h, temperature 25°C, hydraulic retention time 3h, dissolved oxygen 4mg / L. Oxidants consist of a combination of gaseous and liquid forms. Ozone is used as a gaseous oxidant, the addition amount is 50 mg / L; hydrogen peroxide is used as a liquid oxidant, the addition amount is 20 mg / L, and the liquid oxidant is added to the reactor with nutrient solution 40 mg / L. After being treated by the process of the present invention, the COD in the treated effluent is 80 mg / L, the BOD is 5 mg / L, and the effluent reaches the discharge standard and is directly discharged.

Embodiment 2～3

[0026] Different process conditions were used to treat high-concentration wastewater from refineries with different concentrations. The conditions and treatment 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
chemical oxygen demand (mass)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for treating high concentration wastewater of an oil refinery. The method comprises the following steps: introducing the degreased wastewater into a biofilm reactor to perform biological treatment, and adding oxidant in the biological treatment process, wherein the oxidant contains gaseous oxidant and liquid oxidant which are respectively added into the biofilm reactor uniformly in a special manner. As a proper amount of specific oxidant is added, refractory macromolecular organic materials in the wastewater are converted to micromolecular organic materials through oxygenolysis, thereby increasing the biodegradability of the wastewater; and the overgrowth of the biofilm and the generation of the residual activated sludge can be inhibited without affectingthe bioactivity. By adopting the method provided by the invention, the high concentration wastewater of the oil refinery can be effectively treated, and simultaneously, the yield of the residual activated sludge can be effectively reduced; and the method has the advantages of high efficiency, stability, small floor space, less investment, simple operation, low cost and the like.

Description

technical field [0001] The invention relates to a method for treating high-concentration sewage of an oil refinery by using a biological method. In particular, the invention relates to a method for treating high-concentration sewage of an oil refinery that has undergone oil removal treatment by using a biofilm in the presence of an oxidant. Background technique [0002] my country's water pollution is serious, and the overall sewage discharge is increasing year by year. In recent years, with the vigorous development of my country's petrochemical industry, the production scale and processing depth of oil refineries have been continuously expanded and improved, the quality of crude oil has gradually declined, and the processing volume has gradually increased, resulting in increasingly complex components and increasing concentrations of incoming water from sewage treatment plants. high. The technological process and treatment capacity of the original sewage treatment plant are...

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): C02F3/12C02F1/72C02F1/78C02F1/76
CPCY02W10/10
Inventor 朱峰
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com