Unlock instant, AI-driven research and patent intelligence for your innovation.

A diatomite-based flocculant for drilling waste slurry treatment and preparation method thereof

A flocculant, diatomite technology, applied in sludge treatment, natural water treatment, chemical instruments and methods, etc., can solve the problems of difficult treatment, poor removal of heavy metal ions, large water color, etc., and achieve high flocculation efficiency. , easy to promote, reduce the effect of chroma

Active Publication Date: 2021-04-27
朋智教育科技(上海)有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in existing flocculants such as large chroma of water after treatment of waste oil drilling mud, poor removal effect of heavy metal ions and difficulty in follow-up treatment, the present invention provides a waste drilling mud treatment Diatomite-based flocculant and its preparation method and application

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 diatomite-based flocculant for drilling waste slurry treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] In one embodiment, the preparation method includes the following steps:

[0027] (1) the MgCl 2 solution, polyaluminum sulfate solution and polyacrylamide solution are mixed to obtain an organic-inorganic compound solution;

[0028] (2) adding the metal chelating agent and diatomite into the organic-inorganic compound fluid to obtain a diatomite-based flocculant for drilling waste slurry treatment.

[0029] The method has the advantages of simple preparation process, convenient operation, safety and reliability, and is convenient for popularization.

[0030] Specifically, the present invention also provides the application of the diatomite-based flocculant for drilling waste slurry treatment in the flocculation treatment of drilling waste slurry, which has high flocculation efficiency and good removal effect of heavy metal ions.

[0031] Preferably, when the diatomite-based flocculant for treating drilling waste slurry is used to treat drilling waste slurry, the pH of...

Embodiment 1

[0035] Take 10L drilling waste slurry from a drilling site, add water to dilute to 25L, add 0.2g / mL MgCl with a mass ratio of 5:1:1 2 Solution, polyaluminum sulfate solution (0.5%) and polyacrylamide (CPAM, 0.5%) organic-inorganic compound fluid, the volume ratio of drilling waste slurry is 5%; add dithiocarbamate at a concentration of 0.1% The volume ratio of the solution to the drilling waste slurry is 3%; add 150g of pretreated diatom concentrate; use HCl to adjust the pH value of the drilling waste slurry to about 6.0, stir for 15 minutes, and the precipitation is basically completed about 7 to 8 minutes after the stirring stops , and the upper clarified liquid was taken to measure the COD content. The contents of typical heavy metals mercury, arsenic, and selenium in the clarified liquid of drilling waste slurry were lower than 0.011mg / L, 0.021mg / L, and 0.008mg / L respectively.

[0036]In order to better illustrate the technical solution of the present invention, a further...

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
diameteraaaaaaaaaa
concentrationaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of environmental protection, and specifically discloses a diatomite-based flocculant for treating drilling waste slurry, a preparation method and application thereof. The diatomite-based flocculant used for drilling waste slurry treatment includes organic-inorganic compound liquid, metal chelating agent, diatom fine earth, and the organic-inorganic compound liquid, metal chelating agent, diatom fine earth The ratio is (5-10L): (3-6L): (150-600g), and the organic-inorganic compound liquid is made of MgCl 2 solution, polyaluminum sulfate solution and polyacrylamide solution, where MgCl 2 , polyaluminum sulfate, polyacrylamide mass ratio is (5-12): (5-15): (5-15). The diatomite-based flocculant used for the treatment of drilling waste slurry provided by the invention has high flocculation efficiency and good removal effect of heavy metal ions.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a diatomite-based flocculant used for drilling waste slurry treatment and a preparation method thereof. Background technique [0002] Drilling fluid is used in oil drilling engineering to carry cuttings, balance pressure, cool and lubricate drilling tools, and transmit hydrodynamic force. Drilling fluid is mainly composed of bentonite, organic additives and water to form a stable colloidal system. After drilling, the drilling fluid returns to the surface to form drilling waste. Since the drilling fluid contains a variety of chemical components, and the cuttings carried at the same time contain harmful substances such as heavy metals, it is extremely harmful to the environment. The disposal of waste drilling fluid is a big problem. However, due to the limitation of technical conditions and the problem of disposal cost, our country has always adopted the disposal...

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): C02F11/00C02F103/36C02F101/20
CPCC02F11/00C02F11/006C02F2101/20C02F2103/365
Inventor 侯东伟孙西宁孙合平宋剑鸣许兵孙国辉袁振穆海屿尹艳兵
Owner 朋智教育科技(上海)有限公司