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

Refining wastewater desalination integrated treatment process and device

A refinery sewage and treatment process technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, general water supply conservation, etc., can solve membrane pollution and other problems, achieve simple process, reduce frequency, and desalination rate high effect

Active Publication Date: 2016-06-08
PETROCHINA CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, ultrafiltration reverse osmosis, as the main technology for desalination and reuse of circulating cooling water and filtered feed water, has been applied in Dalian Petrochemical, Dagang Petrochemical, Qilu Petrochemical and other enterprises, but there are organic and inorganic salt scaling in operation The problem of membrane fouling

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
  • Refining wastewater desalination integrated treatment process and device
  • Refining wastewater desalination integrated treatment process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0045] This example provides an integrated refinery sewage desalination treatment process, which is applied and studied in Lanzhou Petrochemical. The process is as follows figure 1 shown, including the following steps:

[0046] Step 1: Add CaO and Na to the primary treated refinery wastewater 2 o 3 Remove the hardness, settle in the clarifier, remove the sediment, adjust the pH with acid, and get the preliminary hardness-removed sewage;

[0047] Step 2, filtering the preliminary dehardened sewage in a multimedia filter unit, and then filtering in an activated carbon filter unit to obtain pretreated sewage;

[0048] Step 3: Mix the pretreated sewage and sodium hypochlorite, first pass through the security filter unit for prefiltration, and then perform ultrafiltration in the ultrafiltration unit, and the ultrafiltration treated sewage is backwashed by the backwash pump to the ultrafiltration membrane, and then Enter the ultrafiltration water tank for buffering, and then perf...

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
salt rejection rateaaaaaaaaaa
Login to View More

Abstract

The invention provides an integrated treatment process and device for desalination of refinery sewage. The process includes: adding CaO and Na to the primary treated refinery wastewater 2 CO 3 Remove the hardness and adjust the pH with acid to obtain the preliminary hardness-removed sewage; use multi-media filtration and activated carbon to filter the preliminary hardness-removed sewage to obtain pretreated sewage; mix the pretreated sewage and sodium hypochlorite for ultrafiltration to obtain ultrafiltration Sewage and filtrate; mix ultrafiltration sewage with reducing agent and perform ion exchange treatment to obtain deionized sewage; mix deionized sewage with antiscalant and perform reverse osmosis treatment to obtain pure water and reverse osmosis concentrated water. The process also includes the step of regenerating the ion exchange material used in the ion exchange treatment after the reverse osmosis concentrated water is oxidized with hydrogen peroxide-activated carbon to remove concentrated organic matters. The invention can improve the comprehensive water collection rate and desalination rate of desalination treatment of refinery sewage, effectively control membrane pollution, and realize resource reuse of refinery sewage.

Description

technical field [0001] The invention relates to a refinery wastewater desalination integrated treatment process and device, belonging to the technical field of oil and gas field surface engineering. Background technique [0002] The petrochemical industry is one of the five major water-consuming industries in my country. At present, the biological treatment of refinery sewage in my country generally adopts two-stage aerobic or anaerobic (A / O) process, and the effluent quality can basically meet the internationally recognized discharge standards. Standard, but not directly reusable. For some wastewater with high salt content, high alkalinity, high hardness, and high corrosive ion content, in addition to considering the treatment of polluting components, these ions must also be properly treated so that the circulating water system after sewage reuse No fouling and no corrosion under high concentration ratio. [0003] Reverse osmosis is a desalination treatment technology that...

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): C02F9/04
CPCY02A20/131
Inventor 吴百春罗臻张晓飞张华李婷邓皓刘光全刘译阳宋磊杨雪莹王毅霖
Owner PETROCHINA CO LTD
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