A device and method for treating rural domestic sewage without power and rapid oxygenation

Abstract

A non-powered rapid aerobic rural domestic sewage treatment device and treatment method, including an anaerobic unit and an aerobic aerobic unit, the aerobic aerobic unit includes a gravity aeration system and an aerobic reaction system, and the gravity aeration system includes an overturnable Water bucket, piston assembly, suction pipe, air guide pipe and aeration head. The sewage discharged from the anaerobic unit is discharged into the overturnable water bucket from above the overturnable water bucket. The piston assembly is connected, the aerator head is connected with the air duct, and the aerator head is located in the aerobic reaction system. Before the water storage in the overturnable water bucket reaches the preset water volume, the piston is squeezed to discharge the air. When the overturnable water bucket After the water storage reaches the preset water volume, the stored sewage is discharged by overturning, and the piston returns. The aeration speed of the device is fast, the contact time between the gas and the sewage is greatly prolonged, and the aeration efficiency is obviously improved. At the same time, the device has a simple structure and a small volume, and is convenient for popularization and application.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for treating rural domestic sewage without power and rapidly increasing oxygen. Background technique [0002] Rural domestic sewage has the characteristics of small water volume, scattered discharge, and complex water quality. At the same time, the per capita discharge of domestic sewage in rural areas is far lower than that in urban areas, and the houses in rural areas are basically self-built houses, which are relatively random. Therefore, equipment suitable for urban sewage treatment is difficult to apply to decentralized rural domestic sewage treatment. At present, a large number of miniaturized treatment equipments have appeared for the treatment of rural domestic sewage, and most of the treatment processes adopt biological treatment, mainly anaerobic, aerobic and plant adsorption. In the aerobic process, power mechanical equipment is usually u...

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Problems solved by technology

[0003] In response to this situation, relevant technical personnel have developed non-powered domestic sewage treatment devices. At present, non-powered domestic sewage treatment devices generally adopt natural reoxygenation methods (water drop, waterwheel type, differential pressure type), and natural reoxygenation methods exist. Problems such as low reoxygenation efficiency and unsatisfactory follow-up treatment effect

[0004] For example, the Chinese patent with the application number 201920781635.8 involves a new type of unpowered rural domestic sewage treatment device. The device uses a biological runner for self-aeration, but it only uses the runner to sprinkle and re-oxygenate, and the amount of sprinkled water is limited and the contact time is limited. Short, resulting in low reoxygenation efficiency, and in order to achieve the treatment effect, it is necessary to set up multi-stage biological runners, which also leads to an increase in the occupied area

Similarly, the aeration involved in the Chinese patent with application number 201810247867.5 also uses water trucks, which still have the problems of less water spraying and short contact time; in addition, the device uses aerobic first and then anaerobic treatment of domestic sewage At the same time, a certain amount of water is required to drive the water wheel. Due to the discharge characteristics of rural domestic sewage in the morning and evening, it is difficult to realize it only by the liquid level difference, and the sewage directly enters after reoxygenation, requiring a large-volume anaerobic chamber, resulting in The overall device volume increases

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