These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Study of hydrolysis and acidification process to minimize excess biomass production.
    Author: Zhu H, Chen JH.
    Journal: J Hazard Mater; 2005 Dec 09; 127(1-3):221-7. PubMed ID: 16129555.
    Abstract:
    In this paper, a new wastewater treatment process has been presented to minimize excess biomass production in which both excess sludge digestion and wastewater treatment are conducted simultaneously in the system. The process is modification of conventional activated sludge process with insertion of two facultative basins in the sludge return line. The excess biomass in the aeration tank is recirculated to the first facultative tank. It was observed that: (1) The amount of excess biomass is reduced to nearly aero when 5.95 g/day excess sludge is recirculated from the aeration tank to the first facultative tank at COD(Cr) loading of 2.31 kg/m(3)day. A biomass experiment of 1000 mg/L was maintained at 2.31 kg-COD(Cr)/m(3)day without drawing excess sludge for 6 months of experiment period. Inert organic substances did not seem to accumulate. The effluent quality has been well below the discharge limit. (2) On the basis of infrared spectroscopy proved that dye molecule in wastewater were firstly absorbed on the sludge, and then the bond energy of was gradually weakened and decomposed and eliminated lastly.
    [Abstract] [Full Text] [Related] [New Search]