Supercharge Your Innovation With Domain-Expert AI Agents!

Rapid drying process for dewatered sludge

A technology of dewatering sludge and drying, applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of environmental pollution and high cost, and achieve the effect of reducing production cost, strong ability to absorb water molecules, and promoting acceleration

Active Publication Date: 2014-02-26
HEBEI YUHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly aims at the problems of high cost and environmental pollution in the traditional sludge drying technology, and provides a rapid drying process of dewatered sludge

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A rapid drying process for dewatered sludge. Take dewatered sludge in a mixer, add drying agent ASG-1 with 5% weight of dewatered sludge, stir for 10 minutes at a speed of 50rpm, and then add dewatered sludge weight to the mixer 5% desiccant ASG-2, stirred at 30rpm for 20min to make sludge drying product;

[0016] Wherein said drying agent ASG-1 is made by mixing bauxite beneficiation tailings drying aid with calcium oxide, calcium sulfate and ferrous sulfate according to the mass ratio of 2.0:1.0:0.3:0.2; the aluminum The tailings drying aid for soil dressing is made by the following method: the tailings sand of bauxite dressing is crushed first, then calcined at 350°C for 0.5h, and then ground to 270 mesh powder;

[0017] The drying agent ASG-2 is made by mixing calcified red clay drying aid with magnesium oxide and calcium sulfate in a ratio of 2.2:1.1:0.3 by mass; the calcified red clay drying aid is composed of the following Preparation method: send the calcified ...

Embodiment 2

[0019] A rapid drying process for dewatered sludge. Take the dewatered sludge in a mixer, add drying agent ASG-1 with 10% of the weight of the dewatered sludge, stir for 15 minutes at a speed of 80 rpm, and then add the weight of the dewatered sludge to the mixer. 12% drying agent ASG-2, stirred at 40rpm for 23min to make sludge drying product;

[0020] Wherein said drying agent ASG-1 is made by mixing bauxite dressing tailings drying aid with calcium oxide, calcium sulfate and ferrous sulfate according to the mass ratio of 2.8:1.1:0.4:0.3; the aluminum The tailings drying aid for soil dressing is made by the following method: the tailings sand of bauxite dressing is first crushed, then calcined at 375°C for 0.8h, and then ground to 300 mesh powder;

[0021] The drying agent ASG-2 is made by mixing calcified red clay drying aid with magnesium oxide and calcium sulfate according to the mass ratio of 2.0:1.0:0.2; the calcified red clay drying aid consists of the following Prepa...

Embodiment 3

[0023] A rapid drying process for dewatered sludge. Take dewatered sludge in a mixer, add drying agent ASG-1 with a weight of 20% of the dewatered sludge, stir for 20 minutes at a speed of 100 rpm, and then add dehydrated sludge to the mixer 20% drying agent ASG-2, stirred at 50rpm for 25min to make sludge drying product;

[0024] Wherein said drying agent ASG-1 is made by mixing bauxite dressing tailings drying aid with calcium oxide, calcium sulfate and ferrous sulfate according to the mass ratio of 3.5:1.2:0.5:0.5; the aluminum Soil dressing tailings drying aid is made by the following method: the tailings sand of bauxite dressing is first crushed, then calcined at 400°C for 1 hour, and then ground to 325 mesh powder;

[0025] The drying agent ASG-2 is made by mixing calcified red clay drying aid with magnesium oxide and calcium sulfate in a ratio of 2.5:1.2:0.5 by mass; the calcified red clay drying aid is composed of the following Preparation method: send the calcified r...

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 belongs to a technical scheme for resource utilization of solid wastes, and in particular relates to a rapid drying process for dewatered sludge. The problems of high cost and environment pollution in the traditional sludge drying technology are mainly solved. According to the technical scheme, the rapid drying process for the dewatered sludge comprises the following steps of: putting the dewatered sludge into a blender; adding a drying agent ASG-1 the amount of which is 5-20% by weight of the weight of the dewatered sludge to stir for 10-20 minutes at a rotation speed of 50-100rpm; and adding a drying agent ASG-2 the amount of which is 5-20% by weight of the weight of the dewatered sludge to stir for 20-25 minutes at the rotation speed of 30-50 rpm to prepare the sludge drying product. The method has the advantages that energy consumption is low, process operation is simple, and efficiency is high.

Description

technical field [0001] The invention belongs to the technical proposal of a solid waste resource utilization method, and in particular relates to a rapid drying process of dewatered sludge. Background technique [0002] With the rapid development of my country's environmental protection, the number and scale of sewage treatment plants are rapidly expanding, but a large amount of sludge has become a new source of pollution. In the traditional sludge treatment process, even after mechanical dehydration, the moisture content of the sludge is still above 75-80%, which leads to strong fluidity of the sludge and difficulty in transportation; on the other hand, due to the high moisture content of the sludge , the organic matter in it is in an active state, and it will produce fermentation and expansion during transportation, so it must reach the transportation destination quickly, which causes time pressure for the transportation of sludge. If the sludge with a water content of 80...

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): C02F11/14
Inventor 张弛谭慧杰李丹常媛媛赵保军
Owner HEBEI YUHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com