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

Technology for pretreating degradation-resistant sewage by coupling iron carbon and hydrolyzed granular sludge

A technology of granular sludge and pretreatment, applied in water/sludge/sewage treatment, biological water/sewage treatment, special compound water treatment, etc. It can solve the problem of large iron dissolution and achieve the effect of promoting the formation

Inactive Publication Date: 2020-06-09
ZHEJIANG UNIV OF TECH
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application process, there are also problems such as a large amount of iron dissolution.

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
  • Technology for pretreating degradation-resistant sewage by coupling iron carbon and hydrolyzed granular sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A technology that uses iron-carbon and hydrolyzed granular sludge coupling to treat refractory wastewater. Two sets of sequencing batch hydrolysis reactors with the same operating conditions are set up, and the effective volume is 3L. Add a fixed layer at the middle and lower part of the water level of one of the hydrolysis tanks, add 400g of iron carbon on the fixed layer, choose the refractory wastewater as aquaculture wastewater, COD is about 700mg / L, B / C is about 0.2, NH 4 + -N concentration is about 450mg / L, TP is about 15mg / L; during the operation of the system, the pretreatment effect of the iron-carbon filler group is significantly better than that of the non-addition iron-carbon group, and the B / C average of the iron-carbon filler group is increased to 0.30, while the group without adding iron-carbon filler only increased to 0.25; and the group adding iron-carbon filler had a certain phosphorus removal effect, which could remove 2.2mg / L phosphorus on average; t...

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 technology for pretreating degradation-resistant sewage by coupling iron-carbon and hydrolyzed granular sludge, which adopts an iron-carbon and hydrolyzed granular sludge coupling pretreatment technology and comprises the following specific operation steps: adding a fixed layer in a hydrolysis tank, adding a certain amount of iron-carbon into the fixed layer, and arranging a sequencing batch reactor in the hydrolysis tank for operation. The iron-carbon micro-electrolysis process is coupled with the hydrolyzed granular sludge, so that the granulation of the hydrolyzedsludge is promoted, the pH in the hydrolysis reactor is stabilized, the biodegradability of the degradation-resistant wastewater is effectively improved, and the physical, chemical and biological synergistic pretreatment of the degradation-resistant wastewater is realized.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a process for pretreating refractory sewage by coupling iron-carbon and hydrolyzed granular sludge. Background technique [0002] In order to achieve effective treatment of refractory wastewater, some pretreatment technologies are usually used to reduce the toxicity of toxic wastewater, improve the biodegradability of wastewater, create conditions for biochemical treatment and finally achieve the discharge of wastewater up to standard. Among many pretreatment technologies, iron-carbon micro-electrolysis technology has been widely used in the pretreatment of industrial wastewater. It has the advantages of simple operation, economic feasibility and reusability, and also has a certain phosphorus removal effect. In the iron-carbon micro-electrolysis reactor, when the wastewater (electrolyte solution) is in contact with the iron-carbon filler, many macroscopic...

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): C02F3/28C02F3/00C02F101/30
CPCC02F3/005C02F3/282C02F2101/30C02F2305/06
Inventor 李军刘璐文郭焘
Owner ZHEJIANG UNIV OF TECH
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