Soil improving method of sludge compost

A soil improvement and composting technology, applied to sewage/sludge fertilizers, organic fertilizers, inorganic fertilizers, etc., can solve the problems of high heavy metal content, and achieve the effects of simple operation, reduced bulk density, and easy operation

Inactive Publication Date: 2018-04-24
广州普邦园林股份有限公司
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides an effective, low-cost, and easy-to-operate soil improvement method for sludge composting. The method solves the problems of high EC value, pH value and heavy metal pollution during sludge composting by further processing sludge composting. high content problem

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
  • Soil improving method of sludge compost
  • Soil improving method of sludge compost
  • Soil improving method of sludge compost

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-16

[0053] Embodiments 1-16 are based on the basic embodiments and obtained by adjusting specific technical parameters, as shown in Tables 1-5.

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 discloses a soil improving method of sludge compost. The method includes: mixing a heavy metal passivator with sludge compost to prepare a compost mixture; air-drying the mixture; addingdesulfurized gypsum powder, original soil and charcoal into the air-dried mixture to obtain an improved soil finished product. By adding the heavy metal passivator, the desulfurized gypsum powder andthe charcoal, content of active-state heavy metal is lowered obviously, pH value of soil is lowered, water-holding capacity of the soil is improved, and germination index of the soil when used for plant culture is increased. The method is suitable for saline-alkaline land improvement, sandy soil improvement and mine restoration.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, specifically relates to the technical field of sludge utilization, and more specifically relates to a method for improving soil by composting sludge. Background technique [0002] Municipal sludge is solid waste produced after urban sewage treatment, and it increases rapidly with the increase of sewage treatment rate. Municipal sludge usually contains a large number of toxic and harmful substances such as various microorganisms, heavy metals, and synthetic organic matter. A large amount of untreated sludge entering the environment will cause secondary pollution to water bodies and the atmosphere. At the same time, municipal sludge also contains nitrogen, phosphorus, and potassium needed for plant growth and development, as well as various trace elements to maintain normal plant growth and development, and also contains organic matter that can improve soil structure. At present, most of the s...

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
IPC IPC(8): C05G3/04C05G3/80
CPCC05D3/02C05F7/00C05G3/80C05D9/00
Inventor 谢腾芳张立超刘晓丹李灿麦凝珺李典宝曾志斌李冰敏
Owner 广州普邦园林股份有限公司
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