Composite flocculant for refinery wastewater treatment, and refinery wastewater treatment method

A technology of compound flocculant and refining sewage, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. The problems of low efficiency and high cost of flocculants can achieve good mutual synergy, good removal effect and rapid sedimentation.

Inactive Publication Date: 2020-03-13
PETROCHINA CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for refinery sewage with high oil content and high salt content, a large amount of flocculant needs to be added correspondingly, which not only leads to slower settling speed of flocs, but also makes the treatment efficiency of refinery sewage lower, and because of the high cost of flocculant agents, thus Increased cost of refinery wastewater treatment

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
  • Composite flocculant for refinery wastewater treatment, and refinery wastewater treatment method
  • Composite flocculant for refinery wastewater treatment, and refinery wastewater treatment method
  • Composite flocculant for refinery wastewater treatment, and refinery wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Pour 25 parts by weight of deionized water into a beaker (referred to as beaker a), then slowly pour 1.8 parts by weight of concentrated hydrochloric acid (concentration of 36% to 38%) into beaker a and stir thoroughly, and finally add 7 parts by weight of Add zinc sulfate and 11 parts by weight of aluminum sulfate into beaker a, fully stir and dissolve in a water bath at 55°C. After the zinc sulfate and aluminum sulfate were completely dissolved, the beaker a was placed at room temperature (25°C, the same below) for 20 minutes to obtain the first solution.

[0055] Add 52.18 parts by weight of deionized water to another beaker (referred to as beaker b), and then add 0.02 parts by weight of polyacrylamide (molecular weight is more than 10 million, purchased from Karamay Zhongjia Materials Co., Ltd. , the same below), fully stirred and dissolved in a 55°C constant temperature water bath. After the polyacrylamide is completely dissolved, stop heating in the water bath, c...

Embodiment 2

[0058] Pour 28 parts by weight of deionized water into a beaker (referred to as beaker a), then slowly pour 2.2 parts by weight of concentrated hydrochloric acid (concentration of 36% to 38%) into beaker a and fully stir, and finally add 8 parts by weight of The zinc sulfate and the aluminum sulfate of 12 parts by weight are added in the beaker a, fully stirred and dissolved in the 55 ℃ water bath. After the zinc sulfate and aluminum sulfate were completely dissolved, the beaker a was placed at room temperature (25°C, the same below) for 20 minutes to obtain the first solution.

[0059] Add 45.77 parts by weight of deionized water into another beaker (referred to as beaker b), and then add 0.03 parts by weight of polyacrylamide into beaker b, and fully stir and dissolve in a constant temperature water bath at 55°C. After the polyacrylamide is completely dissolved, stop heating in the water bath, continue to add 4 parts by weight of the complexing agent triethanolamine to the b...

Embodiment 3

[0062] Pour 21 parts by weight of deionized water into a beaker (referred to as beaker a), then slowly pour 2.5 parts by weight of concentrated hydrochloric acid (concentration of 36% to 38%) into beaker a and stir thoroughly, and finally add 9 parts by weight of Add zinc sulfate and 13 parts by weight of aluminum sulfate into beaker a, fully stir and dissolve in a 65°C water bath. After the zinc sulfate and aluminum sulfate were completely dissolved, the beaker a was placed at room temperature (25°C, the same below) for 20 minutes to obtain the first solution.

[0063] Add 51.46 parts by weight of deionized water into another beaker (referred to as beaker b), then add 0.04 parts by weight of polyacrylamide into beaker b, and fully stir and dissolve in a constant temperature water bath at 55°C. After the polyacrylamide is completely dissolved, stop heating in the water bath, continue to add 3 parts by weight of the complexing agent triethanolamine to the beaker b, stir well to...

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
turbidityaaaaaaaaaa
Login to view more

Abstract

The invention provides a composite flocculant for refinery wastewater treatment, and a refinery wastewater treatment method. The composite flocculant for refinery wastewater treatment is prepared fromthe following components in parts by weight: 8-15 parts of an aluminum salt, 6-10 parts of a zinc salt, 0.02-0.05 part of an organic flocculant, 3-4 parts of an organic complexing agent, 70-85 partsof water and an inorganic strong acid, wherein the concentration of the inorganic strong acid in the composite flocculant is 0.025-0.085 mol / 100 g. The composite flocculant for refinery wastewater treatment provided by the invention solves the problem of loose floc of a single organic flocculant, and has the advantages of high flocculation efficiency, large and compact floc, small addition amount,low cost and the like when being used for treating refinery wastewater.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a composite flocculant for refining sewage treatment and a treatment method for refining sewage. Background technique [0002] With the development of the petroleum industry and the continuous expansion of my country's oil refining capacity, the discharge of refining sewage has also increased. Refining wastewater has the characteristics of high oil content, high salt content, and high COD, and its main pollutants are suspended oil, emulsified oil, various suspended solids, salts, and partially dissolved organic matter. If it is not dealt with in time and effectively, it will destroy the soil structure, block the soil pores, and seriously reduce soil fertility; in addition, it will also form a vicious cycle that accumulates over time for natural water bodies and the atmospheric environment, eventually leading to devastating consequences. [0003] At present, due to the h...

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 Applications(China)
IPC IPC(8): C02F1/56C02F1/52C02F103/36
CPCC02F1/5236C02F1/56C02F2103/365
Inventor 王伟蒋鹏程
Owner PETROCHINA CO LTD
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