Method for culturing and treating halophilic granular sludge of high-salt wastewater

A technology for high-salt wastewater and salt granules, which is applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc. Sludge, increase the difficulty of granulation of halophilic sludge, etc., to achieve the effect of various sources of sludge, shortening the treatment cycle, and shortening the sedimentation time

Active Publication Date: 2019-05-03
BEIJING UNIV OF TECH
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been many studies on the granulation technology of freshwater activated sludge, the granulation technology of halophilic sludge has not been reported.
This is mainly because the biological and physiological characteristics of halophilic sludge are significantly different from those of freshwater activated slu

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 culturing and treating halophilic granular sludge of high-salt wastewater
  • Method for culturing and treating halophilic granular sludge of high-salt wastewater
  • Method for culturing and treating halophilic granular sludge of high-salt wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Take 400m of sediment from the sea estuary of a certain city and inoculate it into the air-lift activated granular sludge SBR reactor (3) after pre-enrichment culture, and keep the volatile solid concentration at 3000mg / L.

[0034] Step 2: Inject domestic sewage into the raw sewage water tank (1), and add 30g / L coarse salt or sodium chloride to adjust the high-salt domestic wastewater to a salinity of 3%, as the raw influent for granulation cultivation. The COD concentration of the domestic sewage is 200-400mg / L, and the ammonia nitrogen concentration is 45-55mg / L.

[0035]Step 3: In the water inlet stage, the high-salt domestic wastewater configured in the raw water tank (1) is injected into the air-lift activated granular sludge SBR reactor (3) by using the water inlet peristaltic pump (2).

[0036] Step 4: Turn on the aeration pump (3.1) during the aeration stage, and send air to the aeration pan (3.3) through the connecting pipeline. Adjust the gas flow met...

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 method for culturing halophilic granular sludge, and belongs to the field of biological treatment of sewage. The principles of the invention are as follows: (1) water inflowload is rapidly increased, and EPS secretion of halophilic microorganisms is stimulated. The microorganisms grow in an attached manner through the binding action of EPS, and mature halophilic active granular sludge is formed under the action of hydraulic shearing force; and (2) long precipitation time and short precipitation time act in a combined manner. At the long precipitation time in the early stage, growth of the halophilic microorganisms in a reactor is achieved; and at the short precipitation time in later stage, selective pressure is provided for granulation. According to the halophilic active granular sludge formed by culture in the invention, sludge sources are various, the technology is simple, the salinity tolerance range is between 1% and 10% due to the fact that the enrichedmicroorganisms come from the halophilic flora of settled sludge at a sea inlet, and a compact morphological structure can be kept. The precipitation time is greatly shortened, the treatment period iseffectively shortened, the treatment effect is guaranteed, rapid treatment of the high-salt wastewater is realized, the short-cut nitrification is realized, and the energy consumption is reduced by 30%.

Description

technical field [0001] The invention proposes a method for cultivating halophilic granular sludge to realize biological treatment of high-salt wastewater. The invention belongs to the field of sewage biological treatment, especially the field of high-salt wastewater biological treatment. Background technique [0002] Since high-salt wastewater contains a large amount of inorganic salts, freshwater microorganisms cannot survive in a high-salt environment and cannot achieve the function of pollutant degradation. Aiming at how to improve the salt tolerance of microorganisms to realize the biological treatment of high-salt wastewater, researchers have proposed many solutions. Some researchers proposed to improve the salt tolerance of freshwater activated sludge by means of salinity acclimation. For example, patent application number CN200910191713.X proposes a device and method for domesticating ordinary freshwater activated sludge to construct a high-salt wastewater biologica...

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): C02F3/12C02F3/34
CPCY02W10/10
Inventor 崔有为黄基霖
Owner BEIJING UNIV OF TECH
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