Expanded granular sludge bed (EGSB) reactor with air-lift inner loop and micro power hydraulic outer loop

Abstract

The invention discloses an expanded granular sludge bed (EGSB) reactor with an air-lift inner loop and a micro power hydraulic outer loop. The EGSB reactor comprises a reactor body, a water distribution device, triphase separators, an effluent collecting device and a methane circulating device. The EGSB reactor is characterized in that a first anaerobic reaction chamber and a second anaerobic reaction chamber are arranged in the reactor from bottom to top, a lower triphase separator is disposed at the top of the first anaerobic reaction chamber, an upper triphase separator is disposed at the top of the second anaerobic reaction chamber, a pump water inlet pipe is connected to the effluent collecting device outside the reactor, the pump water inlet pipe is used for a portion of water to back flow to the bottom of the reactor, a reflux pump and valve are installed on the pump water inlet pipe, the reflux pump has a low lift and a large flow and provides motive power, and the valve is used for controlling the flow. According to the expanded granular sludge bed (EGSB) reactor with the air-lift inner loop and the micro power hydraulic outer loop, the motive power consumption is extremely small during operation, the motive power consumption is about 10% to 30% of that of traditional reactors, and the motive power consumption is decreased by 70% to 90%.

Description

[0001] technical field [0002] The invention relates to an environmental protection equipment, in particular to an anaerobic bioreactor, in particular to an EGSB reactor with an air-lift internal circulation and micro-dynamic hydraulic external circulation. [0003] Background technique [0004] At present, the anaerobic granular sludge expanded bed reactor (expanded granular sludge blanket reactor, referred to as EGSB) refers to the combination of the sludge area at the bottom and the gas, liquid, and solid three-phase separation area in the middle and upper parts. The high-tower anaerobic device for the degradation of organic matter is designed so that the wastewater has a relatively high rising flow rate in the reactor, and the granular sludge inside the reactor is in an expanded state. As an improved UASB reactor, the EGSB reactor is very similar to the UASB reactor in terms of structure and sludge form, but its working mode is completely different from that of UASB. T...

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Problems solved by technology

[0007]The problem to be solved by the present invention is to overcome the complex problem of processing industrial organic wastewater process equipment in the prior art, and to provide a kind of air-lifting internal circulation and micro-power A more economical EGSB reactor with hydraulic external circulation and low power consumption

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