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

Technology and method for treating organic waste water through combination of Lemna aequinoctialis and Rhodopseudomonas gelatinosa

A technology of organic wastewater and Rhodopseudomonas, which is applied in the direction of reflux water treatment, anaerobic digestion treatment, water treatment parameter control, etc., can solve the problems of inability to achieve complete removal, low load, etc. Simple to use effects

Active Publication Date: 2018-03-27
HUNAN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Duckweed has an excellent treatment effect on low-concentration organic wastewater containing nitrogen and phosphorus, but there is a problem of low load
Photosynthetic bacteria have an excellent degradation effect on high-BOD wastewater, but they cannot be completely removed. The BOD value of the final treatment is about 200mg / L

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 and method for treating organic waste water through combination of Lemna aequinoctialis and Rhodopseudomonas gelatinosa
  • Technology and method for treating organic waste water through combination of Lemna aequinoctialis and Rhodopseudomonas gelatinosa
  • Technology and method for treating organic waste water through combination of Lemna aequinoctialis and Rhodopseudomonas gelatinosa

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Taking 5 tons of untreated wastewater from a soybean product factory as the experimental object, the BOD concentration of the polluted pond was measured to be 2200mg / L, the ammonia nitrogen concentration was 220mg / L, and the total phosphorus concentration was 18mg / L.

[0033] 1) Discharge 5 tons of organic wastewater into the anaerobic acidification treatment tank for preliminary pretreatment, and inoculate an appropriate amount of anaerobic active particles in it for anaerobic acidification treatment for 24 hours.

[0034] 2) After the pretreatment, the wastewater is discharged into the photosynthetic bacteria (PSB) treatment pool, and the photosynthetic bacteria are treated, wherein Rhodopseudomonas colloids are inoculated with a cell concentration of about 5×10 8 / mL, the treatment time is 15d.

[0035] 3) The waste water discharged in the PSB treatment pool is returned to the PSB treatment pool at a return ratio of about 50% for secondary treatment.

[0036] 4) Dis...

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 and method for treating organic waste water and particularly relates to a biological method for combined treatment based on Lemna aequinoctialis and photosyntheticbacteria and belongs to the technical field of waste water treatment. The method comprises (1) discharging organic waste water into an anaerobic acidification treatment tank and carrying out preliminary pretreatment for 18 to 24 hours, (2) after the pretreatment, discharging the waste water into a photosynthetic bacterium (PSB) treatment tank and carrying out treatment for 10-15d, (3) carrying out reflux on the waste water discharged by the PSB tank according to a reflux ratio of 30-60%, (4) discharging the remaining reflux waste water discharged by the PSB tank into a sedimentation tank andcarrying out treatment for 12-24h, (5) introducing the waste water in the sedimentation tank into a Lemna aequinoctialis treatment tank and carrying out secondary treatment for 10-20d, (6) periodically feeding fresh bacteria into the PSB treatment tank during the treatment, and (7) periodically recovering and reusing the sludge and Lemna aequinoctialis in treatment. The method is simple and environmentally friendly, is low in cost and has high efficiency. The removal rates of BOD, ammonia nitrogen and total phosphorus are 90% or more.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, and in particular relates to a process and method for jointly treating organic wastewater by using duckweed and photosynthetic bacteria Background technique [0002] In recent years, with the rapid development of my country's industry and agriculture, the discharge of wastewater has continued to expand. Among them, organic wastewater is one of the main types of wastewater, and the treatment of organic wastewater has always been one of the research hotspots and difficulties in water treatment engineering. At present, the treatment technologies of organic wastewater mainly include physical methods such as extraction, adsorption, concentration, and ultrasonic degradation; chemical treatment methods mainly include incineration, ozone oxidation, Fenton oxidation, and electrochemical oxidation. ; and two main types of microbial treatment methods: aerobic biological treatment an...

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): C02F9/14C02F101/30
CPCC02F3/28C02F3/327C02F3/34C02F9/00C02F2101/30C02F2209/08C02F2209/14C02F2209/18C02F2301/04
Inventor 杨春平林燕周琦李翔李惠茹曾光明牛秋雅周自力娄伟
Owner HUNAN UNIV
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