A sewage treatment process based on anaerobic ic reactor

Abstract

The invention discloses a sewage treatment process based on an anaerobic IC reactor. In the process, calcium chloride is used as a cross-linking agent, and polyvinyl alcohol and sodium alginate are cross-linked and solidified to form gelled pellets as the gelled core to shorten the The formation time of anaerobic granular sludge is shortened, and there will be no rapid and complete disintegration of granular sludge after damage, and it has better strength and self-healing ability. When the anaerobic IC reactor is shut down, the aerobic The effluent in the SBR tank is introduced into the first anaerobic reaction zone through the mud distribution pipe, which can ensure the flow of water in the rising pipe in the reactor when the reactor is shut down, and evacuate the generated biogas in time, and will not add a large amount of organic matter required for the reaction. material, avoid environmental accidents, and will not reduce the activity of anaerobic bacteria in the tower due to low water temperature. When returning to work, it can achieve a higher reaction rate in a short time and shorten the start-up period.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment process based on an anaerobic IC reactor. Background technique [0002] Anaerobic IC reactor is a new generation of high-efficiency anaerobic reactor, that is, internal circulation anaerobic reactor, which is mainly used to treat organic high-concentration wastewater and degrade organic matter in wastewater into usable combustible gas whose main component is methane , when working, the waste water enters from the bottom of the anaerobic IC reactor, and the sewage is biologically reacted by the anaerobic sludge inside the reactor, degrading cod to generate biogas, and the anaerobic sludge, degraded sewage and biogas go up together with the water flow , when passing through the three-phase separator, the anaerobic sludge settles after separation, and the sewage and biogas continue to rise to the top gas-liquid separator. Part of the sewage is...

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Problems solved by technology

[0003] When the anaerobic IC reactor in the prior art is shut down for maintenance, the feeding of sewage stops, the circulating water of the anaerobic reactor will stop, and the internal circulation cannot be formed, causing the anaerobic sludge in the anaerobic reactor to sink. The degradable substances continue to degrade in the sludge layer of the reactor, but without the boosting force of the water flow, the generated gas cannot be released and accumulates in the sludge layer. When the gas accumulates to a certain extent, the sludge will be lifted up and cause explosive flotation. Rush out from the top of the anaerobic reactor, there is a hidden danger of environmental accidents, and at the same time, the water temperature in the reactor will drop for a long time, resulting in a decrease in the activity of anaerobic bacteria in the tower. In order to solve the above problems, the present invention provides the following technical solutions

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