UASB reactor system based on compression heat pump and method thereof

Abstract

The invention discloses a UASB reactor system based on a compression heat pump and a method thereof. The method comprises the following steps: collecting biogas generated by a UASB reactor into a biogas collection chamber, introducing the collected biogas into a biogas power generator so as to generate power, then driving a compressor of a heat pump system to work so as to generate high-temperature hot water, and conveying the high-temperature hot water into the UASB reactor through a water pump and a pipeline so as to maintain the UASB reactor at a constant temperature and guarantee the UASB to operate under high efficiency. According to the invention, heating of the reactor enables anaerobic bacteria to maintain high activity, so the biogas yield of the reactor is improved; the generated biogas is effectively utilized for generating power by using the biogas power generator, so generated power drives the compressor of the heat pump system to work, and the high-temperature hot water is generated; meanwhile, residual heat of the tank sleeve and the exhaust gas of the biogas power generator is recycled, so the utilization rate of energy is improved.

Description

technical field [0001] The invention belongs to the field of equipment for producing biogas through anaerobic fermentation of sewage, especially for UASB anaerobic reactor systems Background technique [0002] Since the 1970s, Lettinga of the Wangeningen Agricultural University in the Netherlands successfully developed the upflow anaerobic sludge bed (UASB). After 40 years of development, it has become one of the most widely used high-efficiency anaerobic reactors. In the UASB reactor, anaerobic bacteria (methanogens and hydrolytic bacteria) use organic matter in anaerobic sludge as a substrate to purify sewage through degradation ([1] Anaerobic ammonification and gas production rate of aquaculture wastewater treated by UASB process Experimental Research—Fang Jingyan). Since the optimal growth temperature of most anaerobic bacteria (mainly methanogens and hydrolytic bacteria) is 30-35°C, suitable ambient temperature and small temperature fluctuations are important condition...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a UASB reactor system based on a compression heat pump system, so that the biogas produced by the UASB reactor can be utilized, and solve the problems of the reactor polluting the environment and the low efficiency of sewage treatment at a lower ambient temperature

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