Semi-closed two-chamber anaerobic reaction device and wastewater treatment method thereof

Abstract

The invention provides a semi-closed two-chamber anaerobic reaction device. The semi-closed two-chamber anaerobic reaction device comprises a main reactor and a water inlet pipe and is characterized by further comprising a center cone and a bottom cone, wherein the center cone is a bottom-cover-free cone structure; the cone angle is 20-50 degrees; the center cone is fixed at a lower middle part of the main reactor; the top end of the center cone is communicated with the water inlet pipe; the bottom cone is arranged right under the center cone; the bottom cone is of a cone structure; the bottom surface of the bottom cone is superposed with the bottom surface of the main reactor; the cone angle is 140-160 degrees; central axes of the main reactor, the center cone and the bottom cone are superposed to form a semi-closed two-chamber structure. Through the semi-closed two-chamber anaerobic reaction device, the movement path of wastewater in the reactor is extended, so that the contact probability of the wastewater and sludge is increased; the treatment effect of the wastewater is improved; the uniform reflux sludge water is provided, so that the reactor runs in a stable state.

Description

technical field [0001] The invention relates to an anaerobic reaction device, more specifically to a semi-closed two-chamber anaerobic reaction device and a method for treating wastewater, belonging to the field of wastewater treatment. Background technique [0002] In recent years, due to the rapid development of industry and agriculture, a small amount of organic wastewater with high concentration and a large amount of agricultural or mixed domestic sewage with low concentration of organic matter and unbalanced nutrition have a greater destructive effect on the environment. In terms of resistance to water quality fluctuations, toxicity inhibition, and low-concentration organic wastewater treatment, it has become a major problem that anaerobic technology needs to be overcome in the wide application. Existing anaerobic reactors have problems such as low effective volume utilization, long start-up period, low water quality fluctuation resistance, uneven water distribution, et...

AI Technical Summary

Problems solved by technology

The reactor adopts a variable-diameter design with the bottom big and the top small, which reduces the diameter of the upper reaction chamber and the three-phase separation. Although the manufacturing materials are saved, it is easy to cause the following problems: the upward flow rate in the upper part increases suddenly, which makes the separation of mud and water poor; the upper surface area Sudden reduction can easily lead to biased flow or local turbulence affecting the effect of three-phase separation; the problem of water distribution is not fundamentally solved, although it can prevent clogging, it is still prone to problems such as uniform water distribution

The reactor is fed with water through the nozzle and continuously transferred from the pipeline to several sub-reaction chambers in series. Although the mud-water mixing effect is relatively sufficient, the structure is complicated. The biggest problem is that it is easy to block and requires high energy consumption for transfer.

Therefore, the current anaerobic reaction device has the problems of uneven water distribution, slow start-up speed, difficult operation and maintenance, and low efficiency.

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