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

Method for preparing sludge-based biochar and application

A biochar and sludge technology, applied in botany equipment and methods, chemicals for biological control, applications, etc., can solve the problems of environmental secondary pollution, sludge occupying large land resources, etc., and reduce sludge Emissions, low cost, and resource-saving effects

Inactive Publication Date: 2019-09-10
安徽省通源环境节能股份有限公司
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sludge-based biochar preparation method and its application, realize consumption and treatment of municipal sludge to reduce environmental pollution, use sludge for waste utilization, and produce sludge-based biochar that can promote plant growth , has the advantages of reducing sludge discharge, converting it into fertilizer that can promote plant growth, improving the economic benefits of planting plants, and relatively lower cost than fertilizers. It solves the problem that too much sludge will not only occupy a large amount of land resources but also easily cause environmental damage. The problem of secondary pollution

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
  • Method for preparing sludge-based biochar and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] The invention relates to a method for preparing sludge-based biochar, which comprises the following steps: the sludge-based biochar is sequentially concentrated, conditioned and modified, and high-dried and dehydrated from municipal sludge to form a dehydrated cake; the dehydrated cake is passed through a crusher Crushing, and then after drying treatment in a drying furnace and pyrolysis and carbonization treatment in a carbonization furnace, sludge-based biochar is obtained;

[0029] Wherein, the agent added in conditioning modification is one or...

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 diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

A method for preparing sludge-based biochar relates to the technical field of sludge-based biochar preparation. The method comprises the following steps: municipal sludge is successively concentrated,conditioned for modification, and highly dried for dewatering, so that a dewatered sludge cake is obtained; and the sludge-based biochar is obtained by conducting crushing, drying and pyrolysis carbonization on the dewatered sludge cake. An agent added in the conditioning modification is one or more of inorganic coagulants, organic coagulants and additives, wherein the inorganic coagulant is at least one of aluminum sulfate, potassium aluminum sulfate, sodium aluminate, ferrous sulfate, ferric sulfate, polyferric sulfate, poly aluminum sulfate and polysilicate ferric; the additive is at leastone of fly ash, plant ash, sawdust and rice husk bran. The invention can utilize sludge for waste utilization and produce the sludge-based biochar which can promote plant growth. The invention has the advantages of converting sludge into fertilizer for promoting plant growth and improving economic benefit of planting.

Description

technical field [0001] The invention belongs to the technical field of sludge-based biochar preparation, and in particular relates to a preparation method and application of sludge-based biochar. Background technique [0002] With the development of urbanization and the improvement of sewage treatment capacity, urban surplus sludge as a by-product of sewage treatment plants has increasingly become a new problem that cannot be ignored. A large amount of sewage sludge is produced in our country every year, and the sludge contains a large number of toxic and harmful substances such as bacteria, fungi, parasites, pathogens and heavy metals. If these sludges are not treated in time and piled up arbitrarily, it will not only occupy a large amount of land resources but also easily cause secondary pollution to the environment. [0003] At present, research on biomass carbonization with biochar as the main target is gradually emerging. Converting biomass into charcoal and applying i...

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): C02F11/143C02F11/147C02F11/13C02F11/10C10B53/00C09K17/04A01N59/00A01P21/00C09K101/00
CPCA01N59/00C02F11/10C09K17/04C09K2101/00C10B53/00C02F11/13C02F11/143C02F11/147Y02W10/40Y02P60/21Y02A40/22
Inventor 熊霞何光亚司恩良周盈盈杨见博刘程张焜闵飞虎程涛陈斌
Owner 安徽省通源环境节能股份有限公司
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