Comprehensive treatment method for oily sewage in oil field

A sewage treatment method, oilfield sewage technology, applied in the field of chemistry, can solve problems such as polluting groundwater, endangering plant growth, and excessive chroma

Active Publication Date: 2016-02-03
AEGIS GASOLINEEUM TECH
View PDF7 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] 1. High pH value, high concentration of soluble salts and petroleum substances will affect the soil structure, inhibit and harm plant growth;
[0018] 2. Heavy metal elements such as Cr, Hg, Cd, Pb, and organic substances and polymers that are not easily degraded by plants enter the food chain and accumulate in animals and plants, endangering human health and life safety;
[0019] 3. If it enters into rivers, oceans or infiltrates into strata, COD, chroma, suspended solids, petroleum volatile phenols, sulfides, metal ions, etc. w

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
  • Comprehensive treatment method for oily sewage in oil field
  • Comprehensive treatment method for oily sewage in oil field

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Such as figure 1 As shown, an oilfield oil-containing comprehensive sewage treatment method of the present invention includes a process for treating oilfield sewage, wherein the process for treating oilfield sewage includes an electrocatalytic treatment step, a flocculation sedimentation treatment step, and an iron A step of carbon micro-electrolysis treatment, a step of Fenton's advanced oxidation treatment, a step of fine filtration treatment, and finally clean water.

[0032] Further, in the steps of electrocatalytic treatment, the electrocatalytic method is used to generate ozone and hydroxyl radicals, the sewage is oxidized and broken, and the toxicity of the water is reduced, and the electrocatalytic method is used to generate microbubbles to remove the Suspended solids and petroleum substances are lifted to the surface of the liquid surface, and then the chain scraper is used to remove scum and oil droplets, and the scum and oil droplets are recove...

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 relates to a comprehensive treatment method for oily sewage in an oil field. The comprehensive treatment method sequentially comprises an electro-catalysis treatment step, a flocculating settling treatment step, an iron-carbon micro-electrolysis step, a Fenton advanced oxidation step, and a fine filtration treatment, thus obtaining clean water finally. According to the method disclosed by the invention, emulsified oil, suspended matters and COD (Chemical Oxygen Demand) in the sewage of the oil field are effectively removed by using the electro-catalysis treatment step, the flocculating settling treatment step, the iron-carbon micro-electrolysis step, the Fenton advanced oxidation step and the fine filtration treatment, and the water quality of the treated sewage can reach relevant provisions of Comprehensive Sewage Discharge Standard GB8978-1996 and Environmental Quality Standards for Surface Water GB3838-2002.

Description

Technical field: [0001] The invention relates to the field of chemistry, in particular to sewage treatment technology, in particular to a comprehensive treatment method for oily sewage in oil fields. Background technique: [0002] During the exploration and development process of oil fields, drilling sewage, acidizing sewage, fracturing flowback fluid and other sewage are produced. [0003] Drilling sewage is mainly a mixture of drilling fluid, petroleum, drilling cuttings, etc. Its composition is complex and contains various components in drilling fluid, such as clay, organic polymers, oils, inorganic salts, drilling cuttings, drilling fluid additives, etc. In recent years, with the modification of drilling technology and the application of new low-solid and solid-free drilling fluids, the content of chemical oxygen demand has increased, which has brought great difficulties to the treatment of drilling waste. [0004] 1) Composition and hazards of drilling sewage [0005]...

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): C02F9/06
Inventor 秦磊马毅李松堂唐述山
Owner AEGIS GASOLINEEUM TECH
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