Rotary type hollow fiber porous membrane foamless oxygen charging device and method

Abstract

The invention discloses a rotary type hollow fiber porous membrane foamless oxygen charging device and method. The device comprises a rotary foamless membrane type oxygen charging assemble, an air supplying and exhausting system, a water supplying and draining system and a motor and electrical control system. In the method, the raw water is added in an activated sludge aeration basin, the rotary foamless membrane type oxygen charging assemble rotates in the aeration basin at the speed of several to tens revolutions per minute, the oxygen charging adopts the intermittent air charging and discharging way, the air feeding pressure is controlled under the bubble point of the fiber membrane, the oxygen is dissolved rapidly on the membrane surface and is dispersed into the sludge water under the drive of the concentration difference and the pressure difference, the dissolved oxygen concentration is kept at 1 to 2.5 mg / l, the rotary oxygen charging assemble play the role of the mixing and activated sludge stirring. Compared with the traditional aeration method, the invention has high oxygen transmissibility, good oxygen charging effect, little oxygen charging amount, lower energy consumption, little membrane pollution, and convenient change and maintenance, and is very suitable for the upgrading and reforming of the activated sludge aeration basin in the sewage treatment technology.

Description

Rotary hollow fiber microporous membrane bubble-free oxygenation device and method thereof technical field The invention relates to the technical field of environmental engineering, in particular to a rotary hollow fiber microporous membrane bubble-free oxygenation device and a method thereof. Background technique With socioeconomic development and population growth, water scarcity has become a global problem. Today, more than 2 billion people in 80 countries in the world are facing a crisis of fresh water resources, and more than 300 million people in 26 countries are living in a state of water shortage. The water shortage situation in my country is particularly severe. According to the 2005 "China Environmental Status Bulletin", my country's total water resources are 2.8 trillion cubic meters, ranking sixth in the world, but the per capita water resources are 2238.6 cubic meters, only A quarter of the world's per capita share has been listed by the United Nations as one ...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a rotating hollow fiber microporous membrane bubble-free oxygenation device and its method in order to solve the defects of low oxygen utilization rate, high energy consumption and polluted air in the traditional aeration technology

Images