Aerobic granular sludge culture device and method

Abstract

The invention discloses an aerobic granular sludge culture device and method. The aerobic granular sludge culture method is achieved through the aerobic granular sludge culture device, the aerobic granular sludge culture device is provided with a reactor, a partition plate is vertically arranged in the reactor, and the reactor is divided into a reaction tank and a sludge collection tank through the partition plate; the bottom of the reaction tank is connected with a pulse water inlet mechanism, and a gap is formed in the position, corresponding to a sludge bulking layer, of the partition plate and communicates with the reaction tank and the sludge collecting tank; and wastewater enters the reaction tank from the bottom of the reaction tank through the pulse water inlet mechanism, rapid granulation of activated sludge is realized under the action of pulse water inlet, a first valve is opened, the liquid level in the sludge collection tank is lowered, and aged granular sludge enters the sludge collection tank due to the existence of pressure difference. According to the embodiment, through simple structural design, the aged granular sludge is separated from the fresh aerobic granular sludge, and the aged granular sludge is removed, so that the culture quality of the aerobic granular sludge is ensured.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an aerobic granular sludge cultivation device and a cultivation method. Background technique [0002] With the acceleration of urbanization and industrialization, my country's sewage discharge is increasing year by year. At the same time, due to the complex composition of wastewater in my country and the large changes in water quality and quantity, the existing sewage biochemical treatment processes are faced with problems such as high energy consumption in operation and large fluctuations in effluent quality. At present, the commonly used biological treatment methods are divided into two categories: (1) one is the activated sludge method, which is characterized in that the microorganisms for sewage treatment are in a suspended state in the bioreactor, such as A 2 / O, SBR, oxidation ditch, etc.; (2) The second type is the sewage treatment microbial attachment growth met...

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Problems solved by technology

[0004] The key to aerobic granular sludge treatment technology lies in the cultivation and stabilization of aerobic granular sludge, but at present, in the cultivation process of aerobic granular sludge, it is inevitable that there will be loose particle structure caused by the proliferation of filamentous bacteria, and the formation of cavities by hydrolysis inside the particle. However, in the prior art, the reactor for cultivating aerobic granular sludge cannot remove the aged granular sludge, resulting in uneven quality of the cultivated aerobic granular sludge, which affects the follow-up Application in practical engineering

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