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

Method of treating industrial waste water by actived sludge-micro-electrolytic process

A technology for activated sludge and industrial wastewater, which is applied in water/sludge/sewage treatment, water/sewage treatment, biological water/sewage treatment, etc. It can solve the problems of increasing treatment costs, slag production, and treatment difficulties, and achieves High removal rate and good removal effect

Inactive Publication Date: 2003-07-16
QILU PETRO CHEM - SINOPEC
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process still has the following disadvantages: when the iron filings corrosion battery method is used to treat industrial wastewater, it is necessary to mix iron filings with activated carbon or carbonaceous substances to form a battery system, which increases the treatment cost or the amount of slag produced, and causes great difficulties for the subsequent slag treatment.

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 of treating industrial waste water by actived sludge-micro-electrolytic process
  • Method of treating industrial waste water by actived sludge-micro-electrolytic process
  • Method of treating industrial waste water by actived sludge-micro-electrolytic process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The activated sludge used in the test was taken from the first exposure tank of the south sewage treatment plant of Shengli Oil Refinery of Qilu Petrochemical Company. After being washed several times with tap water, it was poured into the tank. Hang a 25cm long 25×25 waste angle iron in the pool water. The treated wastewater is dry-process acrylic fiber process wastewater, and the COD after coagulation-sedimentation to remove insoluble COD is 1315.4mgL.

[0021] Control the temperature of the reaction zone to normal temperature, the pH value between 4.5 and 6.5, control the dissolved oxygen to be greater than 0.5mg / L, and the sludge concentration to be 2 to 4g / L. Gradually reduce the hydraulic retention time until the hydraulic retention time is controlled within 10 hours and the COD removal rate is 45%. At this time, the acclimatization of activated sludge is over.

[0022] The pH value is controlled at 6.0-6.5, the hydraulic retention time is 10 hours, the dissolved...

Embodiment 2

[0023] Example 2 According to the steps and conditions of Example 1, but the pH value of the reaction zone is controlled at 3.5-4.0, the hydraulic retention time is 10 hours, and the COD removal rate of wastewater is 48.5%.

Embodiment 3

[0024] Example 3 According to the steps and conditions of Example 1, but using 20# carbon steel instead of angle steel to domesticate the activated sludge. After acclimatization, the pH value is controlled at 6.0-6.5, the hydraulic retention time is 10 hours, and the COD removal rate of wastewater is 51.3%. Comparative Example 1 The dry acrylic process wastewater in Example 1 was treated with iron filings filtration, and the influent COD was 1315.4 mg / L. device used see image 3 , the pH value of the influent was adjusted to 3. After 10 hours of passing through the water, COD begins to decrease, the lowest can be reduced to 995.3mg / L, and the COD removal rate is 24.3%, which is far lower than the COD removal rate of the method of the present invention. Moreover, the amount of slag produced is relatively large.

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

A process for treating industrial waste water (including waste waters of acrylic fibre, dyeing-printing textile petrochemical trade, etc.) by the active sludge-microelectrolysis method features that the carbon steel is arranged in ordinary active sludge system and the microelectrolysis principle is used to treat industrial waste water. Its advantages are low generation of dregs and high removal rate of COD.

Description

1. Technical field [0001] The invention relates to a treatment method for industrial waste water. 2. Background technology [0002] At present, the most commonly used method to treat industrial wastewater is the activated sludge method. This method is economical, effective and easy to implement in industry. The treatment of the activated sludge method often fails to achieve the expected effect, so people often add pretreatment measures before the activated sludge method. Iron filings filtration, also known as micro-battery method or corrosion battery method, is an important pretreatment method. This method has the characteristics of wide application range, good treatment effect, low cost and convenient operation and maintenance. Most of the iron filings used are waste from the cutting industry, and it does not need to consume limited power resources. It has the characteristics of "treating waste with waste". significance. This method has changed the disadvantages of large...

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): C02F1/463C02F3/12
CPCY02W10/10
Inventor 黄斌邓建利张方银杨晓奕路明义潘咸峰吕军张淑红
Owner QILU PETRO CHEM - SINOPEC
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