Self-circulation anaerobic reactor

Abstract

The present invention relates to a self-circulation anaerobic reactor, and belongs to the technical field of brewing industry sewage treatment. The self-circulation anaerobic reactor mainly includes a tank, wherein the internal of the tank is provided with a gas collector through a center support column, the tank is divided into an upper reaction chamber and a lower reaction chamber through the gas collector, the top of the tank is provided with an arched gas collection shield through an overflow weir, the bottom of the tank is provided with a material feed distributor, a water inlet pipe, a sludge discharge pipe and a side enter type stirrer, four groups of self-circulation systems are arranged inside the tank, each group of the self-circulation system comprises a back flow pipe, a biogas pipe and a gas stripping pipe, the upper end of the back flow pipe is connected with a gas-liquid separator arranged on the upper reaction chamber, the lower end of the back flow pipe is connected with a swirling water distribution device arranged on the lower reaction chamber, one part of the biogas pipe is directly communicated with the gas-liquid separator and the upper reaction chamber, the other part of the biogas pipe is communicated with the gas-liquid separator and the upper reaction chamber through a biogas collection pipe, and the gas-liquid separator is connected with the gas collector through the gas stripping pipe. The self-circulation anaerobic reactor is mainly used for high slag and high solid content sewage treatment in brewing industry.

Description

technical field [0001] The invention relates to a high-efficiency, low-energy-consumption anaerobic reaction treatment equipment suitable for the treatment of high-slag and high-solid sewage in the brewing industry, in particular to an anaerobic reaction treatment equipment with stable operation, low operating cost, high treatment efficiency, high treatment load, impact load resistance, and mass transfer. A self-circulating anaerobic reactor with good effect, high activity of the formed granular sludge and high purity of biogas produced belongs to the technical field of sewage treatment in the brewing industry. Background technique [0002] The conventional distiller's grains treatment process is as follows: firstly, the solids and liquids are fully separated through a centrifuge or a plate-and-frame filter press, and then the wet grains or filter cakes are sold as feed or fertilizer; the filtrate is usually degraded by using a biological anaerobic reactor as the core Organi...

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Problems solved by technology

However, in actual operation, this method has the following two outstanding problems, which lead to poor operation effect and high operation cost:

[0003] (1) The dehydration treatment of distiller's grains is very difficult. Use a centrifugal dehydrator or a plate-and-frame filter press for dehydration. Due to the high viscosity and small particle size of the dried potato distiller's grains, it is easy to remove the filter screen and plate of the centrifugal dehydrator. The filter cloth of the frame filter press is clogged, and the plate and frame filter press also has disadvantages such as the filter cloth and the filter plate are easily broken, and the actual application effect is not good;

[0004] (2) The output of wet grains and filter cakes from solid-liquid separation is very large, and their sales as feed are greatly affected by seasonality, especially in summer, and the cost of drying feed is too high to operate, and they are sold as fertilizers due to the High water volume, pollution during transportation, inconvenient for long-distance transportation, thus restricting the normal operation of treatment facilities

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