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The Upflow Anaerobic Sludge Bed (UASB) is an efficient anaerobic bioreactor developed by Professor Lettinga and others in the Netherlands in the 1970s. During the operation of the reactor, sewage is uniformly distributed and enters the bottom of the reactor, and the sewage flows from bottom to top through the anaerobic sludge bed reactor.There are three important prerequisites for the operation of UASB reactor:
(1)The formation of granular or flocculent sludge with good settling performance in the reactor;
(2)The good natural stirring effect formed by the uniform distribution of gas production and water inflow;
(3)A well-designed three-phase separator can retain sludge with good sedimentation performance in the reactor. The formation of a good granular sludge bed results in high organic load and removal rate, without the need for stirring, and can adapt to load shocks and temperature and pH changes.
Technical advantage
(1) The granulation of sludge results in an average concentration of over 50 gVS/L in the reactor, and the sludge age is generally over 30 days;
(2)The hydraulic retention time of the reactor is correspondingly short;
(3)The reactor has a high volumetric load;
Not only suitable for treating high and medium concentration organic industrial wastewater, but also suitable for treating low concentration urban sewage;
(4)The UASB reactor integrates biological reaction and precipitation separation, with a compact structure;
No need to set fillers, saving costs and improving volume utilization rate;
(5)Generally, there is no need to set up mixing equipment, and the upwelling water flow and the upwelling airflow generated by biogas play a stirring role;
(6)Simple construction and convenient operation and operation
(4)The UASB anaerobic reactor is also suitable for treating low concentration municipal sewage.
| Model | Diameter(mm) | Height(mm) | Volume load(kgCODcr/m³·d) | Biogas yield |
| UASB-4/7 | 4000 | 7000 | 3-6 | 0.2-0.4m³/kgCODcr |
| UASB-5/8 | 5000 | 8000 | 3-6 | |
| UASB-7/9 | 7000 | 9000 | 3-6 | |
| UASB-8/10 | 8000 | 10000 | 5-10 | |
| UASB-8/12 | 8000 | 12000 | 5-10 | |
| UASB-9/12 | 9000 | 12000 | 5-10 | |
| UASB-9/14 | 9000 | 14000 | 5-10 |
Yangzhou Deyuan Environmental Engineering Co., Ltd. is located in the beautiful suburbs of Yangzhou,Jiangsu Province, China. It is a a comprehensive enterprise specializing in the manufacturing, construction, and installation services of environmental protection equipment. The company is located in Yangzhou City, Jiangsu Province, China. It covers an area of 15000 square meters, with various factory buildings covering 12000 square meters. It's main products include waste gas treatment equipment, sewage treatment equipment, sludge treatment equipment, water supply equipment, pure and ultra pure water manufacturing equipment, heat exchange equipment.
The company has a production qualification certificate for environmental protection products and has passed ISO 9001, ISO 14001, and ISO 45001 system certifications. The company independently develops multiple environmental protection equipment and has obtained multiple invention patents from the People's Republic of China. The company operates with integrity and has been rated as a credit AAA enterprise for many years.
