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

A method for advanced treatment of petrochemical wastewater

A petrochemical wastewater, advanced treatment technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of high substrate selectivity and energy consumption, and low utilization rate of ozone oxidation , slow response speed and other problems, to ensure normal and stable operation, wide applicability, and not easy to drain.

Active Publication Date: 2017-12-08
PENYAO ENVIRONMENTAL PROTECTION
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method that overcomes the problems of low utilization rate of ozone oxidation, large dosage, slow reaction speed, substrate selectivity and high energy consumption, and can use ozone to catalyze the production of hydroxyl radicals. Strong oxidative properties can completely degrade and transform pollutants to meet the requirements of effluent, which is an advanced treatment method for petrochemical wastewater

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
  • A method for advanced treatment of petrochemical wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A refining and chemical company in Jiangsu has a daily wastewater treatment volume of 2000m³ / d, which is currently treated by a secondary biochemical process. In order to realize the comprehensive reuse of sewage, it is planned to upgrade the existing process and add an advanced treatment unit on the basis of the original secondary biochemical treatment process. Using the coagulation precipitation + ozone catalytic oxidation + micro-flocculation combined process method of the present invention (see attached figure 1 ) for advanced treatment of secondary biochemical effluent.

[0023] 1) The secondary biochemical effluent (see Table 1 for water quality analysis) is lifted by the pump and enters the coagulation sedimentation + filter 1 for pretreatment. The concentrations of PAC and PAM added to the coagulation sedimentation tank are 10-30mg / L and 0.2 -0.8mg / L, the dosing concentration needs to be determined by field test;

[0024] 2) The effluent from filter 1 enters t...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

A method for the advanced treatment of petrochemical wastewater, comprising the following steps: a. Discharging the secondary treatment effluent of petrochemical wastewater into a sewage tank, lifting it into a coagulation sedimentation tank by an inlet pump, and simultaneously throwing flocculants PAC and PAM into a coagulation reaction tank According to the water quality conditions of petrochemical wastewater, the dosage of PAC is determined to be 10-30mg / L, and the dosage of PAM is 0.2-0.8mg / L. After precipitation, the effluent enters the primary filter to filter out the remaining suspended solids , after filtering, the effluent flows into the intermediate pool; b. The sewage in the intermediate pool is sent into the catalytic oxidation reactor through the lifting pump, and the residence time is 0.5-1.5h. At the same time, ozone is added to the water, and the ozone dosage is 20-50mg / L. Catalytic oxidation reaction; c. Catalytic oxidation reactor effluent flows through the pipeline mixer by itself, and flocculant PAC is added in the pipeline mixer. The dosage of PAC is 2-4mg / L, and the mixed sewage enters the secondary filter for further processing Micro-flocculation and filtration treatment, the filtered water enters the clean water tank to meet the discharge or reuse requirements.

Description

technical field [0001] The invention relates to advanced treatment of petrochemical wastewater, and belongs to the technical field of advanced purification of refractory biodegradable sewage. Background technique [0002] With the development of my country's industry, the discharge of industrial sewage is increasing day by day. The discharge of industrial sewage may have a serious impact on the basin environment and the health of residents. Among them, the discharge of sewage from the petrochemical industry is even more harmful to the ecological environment. Petrochemical companies process many types of crude oil, which is frequently replaced, resulting in large fluctuations in sewage water quality, complex components, high COD content, poor biochemical properties, and many refractory substances such as hydrocarbons and their derivatives, making it difficult to treat and reuse. [0003] Petrochemical sewage usually enters the biochemical pool after pretreatment, and most of ...

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): C02F9/14
Inventor 王洪春黄政新吴波莫新强
Owner PENYAO ENVIRONMENTAL PROTECTION
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