|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Psychrophilic one- and two step systems for pretreatment of winery waste waterстатья
- Авторы: Kalyuzhnyi S.V., Gladchenko M.A., Sklyar V.I., Kizimenko Ye S., Shcherbakov S.S.
- Сборник: Proc. of the VI Latin-American Workshop and Seminar on Anaerobic Digestion
- Том: 1
- Год издания: 2000
- Место издания: Recife, Brazil
- Первая страница: 44
- Последняя страница: 52
- Аннотация: The operation performance of a single and two (in series) laboratory UASB reactors (working volume of 2.7 L, recycle ratio varied from 1:1 to 1:18) treating diluted wine vinasse was investigated under psychrophilic conditions (4-10 oC). For a single UASB reactor seeded with granular sludge, the average organic loading rates applied were 4.7, 3.7 and 1.7 g COD/L/d (hydraulic retention times (HRTs) were around 1 d) at 9-11, 6-7 and 4-5 oC, respectively. The average total COD removal for preacidified vinasse wastewater was around 60% for all the temperature regimes tested. For two UASB reactors in series, the average total COD removal for treatment of non-preacidified wastewater exceeded 70% (the average OLRs for a whole system were 2.2, 1.8 and 1.3 g COD/L/d under HRTs of 2 days at 10, 7 and 4 oC, respectively). In situ determinations of kinetic sludge characteristics (Vm and Km) revealed an existence of substantial mass-transfer limitations for the soluble substrates inside the reactor sludge bed. Therefore an application of higher recycle rations is essential for enhancement of UASB pre-treatment under psychrophilic conditions. The produced anaerobic effluents were shown to be efficiently post-treated aerobically – final effluent COD concentrations were around 0.1 g/L. A successful operation of the UASB reactors at quite low temperatures (4-10 oC) opens some perspectives for application of high-rate anaerobic pre-treatment at ambient temperatures, e.g. in south regions of Russia where the main national wineries are located.
- Добавил в систему: Гладченко Марина Анатольевна