Sludge ceramsite for heavy metal wastewater treatment, and preparation method

A wastewater treatment and sludge ceramsite technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as poor adsorption performance, achieve strong adsorption, no The effect of secondary pollution and strong adsorption rate

Inactive Publication Date: 2020-12-25
CHENDU NEW KELI CHEM SCI CO LTD
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defect that ordinary porous ceramsite has poor adsorption performance on heavy metal pollutants in heavy metal wastewater, the present invention proposes a sludge ceramsite for heavy metal wastewater treatment and a preparation method, thereby improving the performance of porous ceramsite in heavy metal wastewater. application effect

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
  • Sludge ceramsite for heavy metal wastewater treatment, and preparation method
  • Sludge ceramsite for heavy metal wastewater treatment, and preparation method
  • Sludge ceramsite for heavy metal wastewater treatment, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Use river bottom mud as the main raw material, mix it evenly with fly ash, vermiculite powder, clay, ammonium bicarbonate, and water, then form the raw material into balls, and then sinter at high temperature to obtain porous ceramsite; the high-temperature sintering temperature is 1120°C, Sintering and heat preservation for 13min; the average particle diameter of porous ceramsite is 4mm; in the preparation of porous ceramsite, the mass ratio of river bottom mud, fly ash, water, vermiculite powder, clay, ammonium bicarbonate is 100:58:80:24: 23:1.2;

[0029] (2) Mix humic acid, isopropanol, sodium carbonate, sodium dodecylbenzenesulfonate, absolute ethanol, and deionized water evenly, add to a ball mill, and ball mill for 30 minutes at a speed of 50 rpm to obtain fine humic acid Slurry: In the slurry, the mass ratio of deionized water, nano humic acid, isopropanol, sodium carbonate, sodium dodecylbenzenesulfonate, and absolute ethanol is 100:50:3:1:0.5:4.

[0030] ...

Embodiment 2

[0033] (1) Use river bottom mud as the main raw material, mix it evenly with fly ash, vermiculite powder, clay, ammonium bicarbonate, and water, and then sinter the raw material into balls, and then sinter at high temperature to obtain porous ceramsite; the high-temperature sintering temperature is 1000°C, Sintering and heat preservation for 15min; the average particle size of porous ceramsite is 3mm; in the preparation of porous ceramsite, the mass ratio of river bottom mud, fly ash, water, vermiculite powder, clay, ammonium bicarbonate is 100:50:80:20: 20:1;

[0034] (2) Mix humic acid, isopropanol, sodium carbonate, sodium dodecylbenzenesulfonate, absolute ethanol, and deionized water evenly, add to a ball mill, and ball mill for 30 minutes at a speed of 50 rpm to obtain fine humic acid Slurry; in the slurry, the mass ratio of deionized water, humic acid, isopropanol, sodium carbonate, sodium dodecylbenzenesulfonate, and absolute ethanol is 100:50:3:1:0.5:2;

[0035] (3) A...

Embodiment 3

[0037](1) Use river bottom mud as the main raw material, mix it evenly with fly ash, vermiculite powder, clay, ammonium bicarbonate, and water, then form the raw material into balls, and then sinter at high temperature to obtain porous ceramsite; the high-temperature sintering temperature is 1200°C, Sintering and heat preservation for 10 minutes; the average particle size of porous ceramsite is 5mm; in the preparation of porous ceramsite, the mass ratio of river bottom mud, fly ash, water, vermiculite powder, clay, and ammonium bicarbonate is 100: 70: 80: 30: 25: 1.5;

[0038] (2) Mix humic acid, isopropanol, sodium carbonate, sodium dodecylbenzenesulfonate, absolute ethanol, and deionized water evenly, add to a ball mill, and ball mill for 30 minutes at a speed of 50 rpm to obtain fine humic acid Slurry; in the slurry, the mass ratio of deionized water, nano humic acid, isopropanol, sodium carbonate, sodium dodecylbenzenesulfonate, and absolute ethanol is 100:40:5:1:0.5:4.

...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a sludge ceramsite for heavy metal wastewater treatment, and a preparation method thereof. The sludge ceramsite is porous ceramsite prepared by pelletizing and sintering mixed raw materials of river sediment, fly ash, vermiculite powder, clay and ammonium bicarbonate, mixing humic acid, isopropanol, sodium carbonate, sodium dodecyl benzene sulfonate, absolute ethyl alcohol and deionized water are mixed to prepare a mixed solution, grinding to form a slurry, and repeatedly soaking the porous ceramsite in the slurry liquid and drying. According to the modified sludge ceramsite provided by the invention, humic acid is used for modifying the ceramsite, so the specific surface area is large, the modified sludge ceramsite has very strong adsorbability to heavy metals Pb, Cd, Cu and the like and stable adsorption rate, can be recycled for multiple times, does not cause secondary pollution, can be widely applied to heavy metal wastewater treatment, and realizes resourceutilization of river sediment, and the purpose of treating waste with waste is achieved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to sludge ceramsite for heavy metal wastewater treatment and a preparation method. Background technique [0002] The rapid development of industry and the lack of human attention to the environment have caused serious pollution of water bodies such as rivers and lakes. A large number of refractory pollutants enter the water body through wastewater discharge and rainwater washing, and accumulate and gradually enrich in the bottom mud of the water body. river. Common disposal methods for resource utilization of river sediment include land use, building materials, filling materials, and sewage treatment materials. [0003] Heavy metal wastewater refers to wastewater containing heavy metals discharged during industrial production. Heavy metal wastewater cannot be degraded by any method, and can only be removed from the water body by forming various complexes or chelates b...

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): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/02B01J20/041B01J20/043B01J20/06B01J20/08B01J20/103B01J20/12B01J20/22B01J20/24B01J20/28016B01J20/28059C02F1/288C02F2101/20
Inventor 陈庆司文彬白涛李钧
Owner CHENDU NEW KELI CHEM SCI 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