منابع مشابه
A modified oxic-settling-anaerobic activated sludge process using gravity thickening for excess sludge reduction
Oxic-settling-anaerobic process (OSA) was known as a cost-effective way to reduce the excess sludge production with simple upgrade of conventional activated sludge process (CAS). A low oxidation-reduction potential (ORP) level was the key factor to sludge decay and lysis in the sludge holding tank of the OSA process. However, the ORP control with nitrogen purge or chemical dosing in the OSA pro...
متن کاملModeling the Activated Sludge—Thickening Process in Secondary Settlers
A single paragraph of about 200 words maximum. For research articles; abstracts should give a pertinent overview of the work. We strongly encourage authors to use the following style of structured abstracts; but without headings: (1) BACKGROUND: Place the question addressed in a broad context and highlight the purpose of the study; (2) METHODS: Describe briefly the main methods or treatments ap...
متن کاملeffect of dissolved air flotation process on thickening of activated sludge
aims: sludge is an inescapable component of all wastewaters that originated from their treatment. dissolved air flotation (daf) process as an alternative clarifier is used in treatment of drinking water, pretreatment of wastewater, and as a phase separator in sludge activation processes. this study aimed to calibrated the usage of daf process in a laboratory scale and under various conditions, ...
متن کاملKinetic theory of shear thickening for a moderately dense gas-solid suspension: From discontinuous thickening to continuous thickening.
The Enskog kinetic theory for moderately dense gas-solid suspensions under simple shear flow is considered as a model to analyze the rheological properties of the system. The influence of the environmental fluid on solid particles is modeled via a viscous drag force plus a stochastic Langevin-like term. The Enskog equation is solved by means of two independent but complementary routes: (i) Grad...
متن کاملThickening of the tracheal wall
1. Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ) Brasil. 2. Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre (RS) Brasil. A 63-year-old female patient presented with a 1-year history of recurrent polyarthritis and a 3-month history of dry cough. Her laboratory test results were normal. Physical examination revealed deformity in both ears, with inflammatory s...
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: Proceedings of the Japan Society of Civil Engineers
سال: 1980
ISSN: 1884-4936,0385-5392
DOI: 10.2208/jscej1969.1980.294_59