Upflow sludge bed filter (UBF) is Canadian Guiot's combination of anaerobic filter (Anaerobic Filter, AF) and upflow anaerobic sludge bed (Upflow Anaerobic Sludge Blanket, A new type of composite anaerobic fluidized bed reactor developed on the basis of UASB. UBF has a high biosolids retention time (SRT) and can effectively degrade toxic substances. It is an effective and economical technology for treating high-concentration organic wastewater.
Anaerobic Sequencing Batch Reactor (ASBR for short) is a high-speed anaerobic reactor developed by Professor Dague in the United States in the early 1990s (U.S. Patent No.: 5,185,079 ). ASBR is a non-steady-state anaerobic bioreactor that operates intermittently. Each operation cycle is divided into five stages: water inflow, reaction, precipitation, drainage and standby.
The difference between UBF and ASBR
1. UBF is a filter and ASBR is an anaerobic reactor
2. UBF can produce a large amount of CH4 during treatment and can be used as Fuel, which can recover a large amount of energy.
3. UBF has a high biosolids retention time (SRT) and can effectively degrade toxic substances. It is an effective and economical technology for treating high-concentration organic wastewater.
4. During the operation of the ASBR reactor, according to the changes in wastewater volume and quality, the operation time and HRT and SRT of each process in an operation cycle can be adjusted to meet the requirements of the effluent water quality. It has Strong operational flexibility
5. During the operation of the ASBR reactor, according to the changes in wastewater volume and quality, the operation time and HRT and SRT of each process in an operation cycle can be adjusted to meet the requirements. According to the requirements of effluent water quality, it has strong operational flexibility.
6. UBF uses sand and soft filler in the equipment as fluidizing carriers. Sewage is used as a flowing medium, and anaerobic microorganisms form biofilms on the surface of sand and soft fillers. They mix themselves when methane gas is produced in the circulation pump or during the sewage treatment process, making the sewage flow. When the sewage passes through the bed in an up-flow manner, it continuously contacts and reacts with the carrier with anaerobic biofilm attached to the bed, achieving the purpose of anaerobic reaction decomposition and adsorption of organic matter in the sewage. UBF composite anaerobic fluidized bed has the advantages of high efficiency and small footprint, and is suitable for higher concentration organic sewage treatment projects.