Improved wastewater disinfection by ultrasonic pre-treatment
نویسندگان
چکیده
منابع مشابه
Improved wastewater disinfection by ultrasonic pre-treatment.
The objective of our work is to evaluate the scientific and economic potential of US application as a pre-treatment step in combination with UV to optimise the disinfection process of wastewaters. Ultrasound application of 20 s at low density of 30 W/l changed the particle size distribution (PSD) of the samples, the mean particle diameter dropped from 70 to 11 microm. Generally it is assumed th...
متن کاملUltrasonic Disinfection of Wastewater Effluents for High-quality Reuse
Cavitation, induced by ultrasound at low frequencies, is an effective means for the disintegration of bacterial cells. Two effects can be observed: At low ultrasound doses bacteria flocs can be declumped by mechanical shear stresses, and at increased doses ultrasound cavitation has an impact on the cell walls such that they are broken. In lab scale experiments a horn sonotrode operated at 20 kH...
متن کاملUrban wastewater disinfection by filtration technologies
The microbiological quality of effluents from different macrofiltration systems (pressure sand filter and disc filter) used as pre-treatment and membrane technologies (microfiltration and ultrafiltration) was evaluated in order to determine their possible application as alternatives to disinfection of urban wastewater prior to reutilization. Microbiological quality was determined by reference t...
متن کاملElectrochemical disinfection of secondary wastewater treatment plant (WWTP) effluent.
In this work the electrochemical disinfection of the effluent of a secondary wastewater treatment plant is investigated. In the experimental work, performed on-site with real effluents of the WWTP located in Vuelta Ostrera (Cantabria, Spain), boron-doped diamond (BDD) electrodes were employed. The initial concentration of E. coli in the effluent of the WWTP varied in the range 1.3 x 10⁴-5.2 x 1...
متن کاملEvaluation of Disinfection Units for Onsite Wastewater Treatment Systems
reflect the views and policies of the SWRCB, nor does the mention of trade names or commercial products constitute endorsement or recommendations for use.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Ultrasonics Sonochemistry
سال: 2004
ISSN: 1350-4177
DOI: 10.1016/s1350-4177(03)00156-1