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

Novel nitrogen and phosphorus removal sulfur-based composite material and preparation method thereof

A technology for nitrogen and phosphorus removal and composite materials, which is applied in the field of new nitrogen and phosphorus removal and sulfur-based composite materials and its preparation, can solve the problems of limited popularization and low denitrification load

Pending Publication Date: 2020-10-30
江苏艾创环境科技有限公司
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that the sulfur autotrophic denitrification process is an acid-producing reaction, and it is generally used in combination with limestone to maintain acid-base balance, and limestone itself cannot be used as an electron donor to drive the denitrification process, so it occupies the filter bed area A "dead zone" for denitrification reaction is formed, and the overall denitrification load is low (generally 40-60% of the heterotrophic denitrification filter)
The above-mentioned problems limit the popularization and use of this technology in our country

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
  • Novel nitrogen and phosphorus removal sulfur-based composite material and preparation method thereof
  • Novel nitrogen and phosphorus removal sulfur-based composite material and preparation method thereof
  • Novel nitrogen and phosphorus removal sulfur-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0037] see Figure 1-6 As shown, a new type of nitrogen and phosphorus removal sulfur-based composite material is obtained by mixing sulfur-rich solution, calcined dolomite, gypsum powder and siderite powder.

[0038] The sulfur-rich solution includes industrial sulfur-rich solution or sulfur recovery waste liquid, and the sulfur ion mass concentration in the sulfur-rich solution is ≥65%;

[0039] The calcined dolomite is calcined at 800-1000°C until the dolomite ...

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 novel nitrogen and phosphorus removal sulfur-based composite material and a preparation method thereof. The nitrogen and phosphorus removal sulfur-based composite material isobtained by mixing and processing a sulfur-rich solution, calcined dolomite, gypsum powder and siderite powder, and is mainly formed by compounding natural minerals such as elemental sulfur and divalent iron ore; a synergistic interaction mechanism of elemental sulfur and iron ore composite driven denitrification nitrogen removal is illuminated from the mechanism, the divalent iron ore can serveas an electron donor while providing alkalinity, and the problem that a traditional sulfur autotrophic denitrification filter tank is low in nitrogen removal load is solved; ferrous ions dissolved outof the iron minerals can form insoluble ferrous sulfide with sulfide, so that the risk that sulfide in effluent exceeds the standard is effectively reduced; after substances such as iron ore are added, the ignition point of the composite material is remarkably increased, the combustion speed is obviously reduced, and the safety of the composite filter material in the transportation and storage process is effectively improved.

Description

technical field [0001] The invention relates to the technical field of water pollution prevention and control, in particular to a novel nitrogen-removing phosphorus-sulfur-based composite material and a preparation method thereof. Background technique [0002] At present, my country's sewage treatment plants generally adopt the heterotrophic denitrification filter denitrification technology in order to meet the requirements of the discharge standard for deep removal of total nitrogen. The basic principle is to add small molecule organic matter such as sodium acetate and methanol as electron donors in the denitrification filter to drive the heterotrophic denitrification microorganisms attached to the filter material, and reduce nitrate to nitrogen to realize the reduction of total nitrogen. remove. In the actual operation process, the biggest technical difficulty faced by the heterotrophic denitrification filter lies in the fluctuation of influent nitrate concentration and d...

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): C04B2/10C04B2/04C02F3/34C02F3/28
CPCC02F3/2826C02F3/34C02F2203/006C02F2209/16C02F2303/14C04B2/04C04B2/10
Inventor 王汉敏李峰
Owner 江苏艾创环境科技有限公司
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