Method and device for preventing scaling of reactor and simultaneously purifying biogas

Abstract

The invention relates to a method and a device for preventing scaling of a reactor and simultaneously purifying biogas, belonging to the technical fields of wastewater treatment and environmental protection engineering. The invention aims to solve the problem of scaling blockage of a reactor, caused by calcium carbonate deposition when the anaerobic biological reactor is used for treating high-concentration calcium ion organic matter wastewater. In the method, the biogas generated when the anaerobic biological reactor is used for treating the wastewater is introduced into the organic matter wastewater containing high-concentration calcium ions to remove the high-concentration calcium ions, and meanwhile, the processed wastewater is used as a feeding material of the anaerobic reactor, i.e.the wastewater after the calcium is removed enters the anaerobic reactor to prevent scaling. On the other hand, when the calcium is removed, the methane content in the biogas is improved due to consumption of carbon dioxide, i.e. the purity of the biogas is improved.

Description

technical field [0001] The invention relates to a method and a device for purifying methane while preventing fouling of a reactor, and belongs to the technical field of wastewater treatment and environmental protection engineering. Background technique [0002] Since the development of the chemical industry by humans, the types and quantities of artificially synthesized organic substances have increased day by day. The purification and treatment of wastewater containing high concentrations of organic pollution has attracted more and more attention from the society and the people. Considering that organic matter in wastewater is an important source of pollution, biological treatment technology is usually used to degrade, transform and stabilize pollutants by utilizing the metabolism of organisms. Biological treatment usually includes aerobic biological treatment and anaerobic biological treatment. With the rapid development of anaerobic reactor technology, anaerobic treatme...

AI Technical Summary

Problems solved by technology

Calcium carbonate precipitation will promote the bonding and aggregation between granular sludge, cause channeling and blockage, and reduce the mass transfer efficiency; it will also cause the ash content of the sludge to increase, the active components in the sludge will be phased out, and the inorganic components will occupy the reactor A large amount of space reduces the processing efficiency of the reactor, and even fails to operate; in addition, it causes fouling and blockage of the reactor water distribution system, the inner wall of the reactor and the wall of the connecting pipe, causing the reactor to fail

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