1、 Product Introduction
EGSB anaerobic reactor (internally divided into mixing zone, expansion zone, sedimentation zone, and gas collection section according to functions. Based on multiple engineering practices, the water distribution system and three-phase separator are optimized to make the water distribution more reasonable and the three-phase separator more ideal, ensuring that the reactor obtains higher volumetric load during stable operation.
2、 Working principle
EGSB anaerobic reactor is a new type of anaerobic reactor after UASB. It consists of a water distributor, three-phase separator, gas collection chamber, and external water inlet system to form a complete system. The organic matter in the wastewater entering the EGSB anaerobic reactor through the sewage pump is fully in contact with the sludge at the bottom of the anaerobic tank, and most of it is treated and absorbed. The high hydraulic load and high gas load enable the sludge to be fully mixed with organic matter, resulting in the sludge being in a fully expanded state and a high mass transfer rate, greatly improving the anaerobic reaction rate and organic load. The generated biogas rises to the top and is separated from sludge, sewage, and biogas by a three-phase separator. From the actual operation, the EGSB anaerobic reactor has a removal rate of over 85% for organic matter, with stable operation and stable effluent. This EGSB anaerobic technology is already very mature and has been widely used in large and medium-sized enterprises in China.
3、 Product Display

4、 Product Features
The organic load of a high organic load anaerobic reactor is 2-5 times that of UASB, and the organic load of UASB is usually 3-8kgCOD/m³ ·d. The organic load of EGSB can reach 6-25kg COD/m³ ·D.
Due to the higher organic load of EGSB compared to UASB, with EGSB having a higher aspect ratio than UASB, the ground area occupied by EGSB for treating organic wastewater of the same scale is much smaller than that of UASB anaerobic reactors.
The stable operation of EGSB anaerobic reactor uses anaerobic granular sludge, and the settling speed of sludge is greater than the rising speed of sewage. Therefore, the EGSB anaerobic reactor rarely runs out of sludge, ensuring stable operation.
4 EGSB operation control 1) Temperature: The optimal temperature range for medium temperature anaerobic reactions is 35-38 ° C, with temperature fluctuations during operation ≤ 2 ° C/d. 2) PH: Under normal circumstances, the pH value of the inlet water should be controlled above 6.5, and the outlet water should be between 6.8-7.2. 3) Other indicators: VFA, gas production, HCO3 alkalinity, nutrients such as N and P, and toxic substances.
Sudden increase in high load influent concentration or sudden change in influent volume can cause load shock to anaerobic reactors. Due to its internal circulation effect, EGSB instantly increases the gas production and gas lift when high concentration wastewater enters the reactor, resulting in a large internal circulation volume. The large internal circulation can quickly dilute the high concentration wastewater, thereby reducing the impact of organic load changes on the reactor.
The high hydraulic load at the bottom of EGSB and the unique water distributor can ensure even water distribution to the maximum extent.
During normal operation, the EGSB reactor with low operating costs can use reflux water to adjust the pH value, requiring minimal adjustment of reagents, thus saving operating costs.
5、 Product advantages
1. Has high volumetric load and aspect ratio;
2. Save infrastructure investment and land area;
3. Easy to operate without moving parts, saving energy consumption;
4. Strong resistance to impact loads and the ability to buffer pH values;
5. Good effluent stability. Nowadays, EGSB reactors have been widely used in industries such as starch, alcohol, beer, pharmaceuticals, and papermaking, with excellent treatment effects.