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

Aerobic granular sludge culture method

A technology of aerobic granular sludge and cultivation method, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. It does not meet the actual problems of petrochemical wastewater treatment, and achieves the effect of overcoming bottlenecks and expanding the scope of application

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (3) The salt content in the test wastewater was low, and the effect of salinity on the formation of aerobic granular sludge was not fully considered;
[0011] (4) The short-cycle SBR (2.5-6h) process is used to cultivate aerobic granular sludge, which does not meet the actual treatment of petrochemical wastewater
[0012] It can be seen that there is no effective method for the cultivation of aerobic granular sludge for petrochemical wastewater.

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
  • Aerobic granular sludge culture method
  • Aerobic granular sludge culture method
  • Aerobic granular sludge culture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] The cultivation method of aerobic granular sludge of the present invention comprises the following steps:

[0040] Step 1, inoculation: inoculate the activated sludge in the sequencing batch reactor;

[0041] Step 2. Water intake: first use sulfuric acid to adjust the pH value of the petrochemical wastewater to be treated between 8.0 and 9.0, and then pump the petrochemical wastewater with adjusted pH value into the reactor through the water inlet at the bottom of the sequencing batch reactor (reactor is the abbreviation of sequence batch reactor);

[0042] Step 3. Aeration: Aeration is carried out through the aeration device laid at the bottom of the reactor, so that the activated sludge and petrochemical wastewater are fully mixed and reacted; compressed air is sent into the aeration device through the pipeline;

[0043] Step 4, sedimentation: stop...

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
chemical oxygen demand (mass)aaaaaaaaaa
Login to View More

Abstract

The invention relates to an aerobic granular sludge culture method. The aerobic granular sludge culture method comprises the following steps of 1, inoculating a sequencing batch reactor with activated sludge, 2, adjusting a pH value of petrochemical wastewater to be treated by sulfuric acid and pumping the petrochemical wastewater with an adjusted pH value into the reactor, 3, carrying out aeration by an aeration device laid on the bottom of the reactor so that the activated sludge and the petrochemical wastewater are mixed and undergo a full reaction, 4, stopping aeration and carrying standing for sludge-water separation, and 5, discharging a certain amount of water by a water outlet of the reactor and periodically repeating the steps of 2 to 5 in the reactor. The aerobic granular sludge culture method utilizes the petrochemical wastewater to carry out aerobic granular sludge culture. The cultured aerobic granular sludge has salt resistance, impact resistance and high-density organic load resistance, can be directly used for treatment on high-salt, high-COD and strong basic petrochemical wastewater, solves the bottleneck problem of use of aerobic granular sludge in petrochemical wastewater treatment and further widens an aerobic granular sludge technology application scope.

Description

technical field [0001] The invention relates to the technical field of aerobic biochemical treatment of sewage, in particular to a method for cultivating aerobic granular sludge. It is especially suitable for the cultivation method of aerobic granular sludge with high salt, high COD and strong alkaline petrochemical wastewater. Background technique [0002] Aerobic biochemistry is a widely used sewage biochemical treatment technology at present, and activated sludge is the main body of aerobic biochemistry. However, in the process of biochemical treatment of petrochemical wastewater, people found that the traditional activated sludge process often has the disadvantages of sludge not easy to coagulate, poor settling, increased suspended matter in effluent, and reduced treatment effect. Aerobic granular sludge technology (Aerobic Granular Sludge, AGS) is a new type of microbial self-immobilization technology developed in recent decades. It is a granular microbial self-aggrega...

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): C02F3/12
CPCC02F3/1263C02F2103/365Y02W10/10
Inventor 赵桂瑜孙杰马兰兰王道泉赵璞
Owner CHINA PETROLEUM & CHEM CORP
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