Circulating granulation fluidized bed device of low-temperature, low-turbidity, high-turbidity or high-alga water treatment

Abstract

The invention provides a circulating granulation fluidized bed device of low-temperature, low-turbidity, high-turbidity or high-alga water treatment. A middle cylinder and an inner cylinder are mounted in a circulating granulation area of the fluidized bed main body device; a tank, the middle cylinder and the inner cylinder are coaxially arranged from outside to inside in sequence, a granulation fluidization area is arranged in the inner cylinder, a backflow area is formed between the inner cylinder and the middle cylinder, a sludge sedimentation area is arranged between the middle cylinder and the tank body; the bottom end of the inner cylinder is open; the position, close to the bottom end of the inner cylinder, of the bottom end of the middle cylinder is retracted inwards and a backflowwater outlet slit is formed between the bottom end of the inner cylinder and the contraction inner wall of the middle cylinder and is used for forming local negative pressure and providing backflow power. According to the device disclosed by the invention, the sludge in the granulation fluidization area circulates and backflows through the backflow area, the backflow water outlet slit at the bottom of the backflow area can locally form negative pressure, the backflow power is provided, and the backflow process enables the equipment to adapt to the great change capacity of the water quality load.

Description

technical field [0001] The invention belongs to the field of water treatment and relates to a granulation fluidized bed, in particular to a circulating granulation fluidized bed equipment for low-temperature low-turbidity, high-turbidity or high-algae water treatment. Background technique [0002] In recent years, the country has paid more and more attention to the environment and the efficient use of resources. In the traditional water supply treatment industry, water purification and wastewater recycling have received more and more attention. In the western region, due to climate and environmental changes, surface water often has water quality characteristics such as large changes in turbidity and a large number of algae blooms in a certain period of time. Among them, the low temperature and low turbidity water has a large viscosity coefficient due to the low temperature of the water, and the number of impurity particles in the water is small, resulting in low collision ef...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a circulating granulation fluidized bed equipment for low-temperature low-turbidity, high-turbidity or high-algae water treatment. The device has low-temperature low-turbidity water, high-turbidity water and High algae water treatment capacity, solving the technical problem that the existing granulation fluidized bed has poor ability to adapt to large changes in water quality load

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