Method for improving water quality by using microbubble improved biological activated carbon

Abstract

The invention discloses a method for improving water quality by using microbubble improved biological activated carbon, and belongs to the technical field of water treatment. The method for improving the water quality comprises the following steps: introducing sewage into a biological activated carbon system to remove pollutants; the biological activated carbon system comprises a filter column, an ultrafiltration membrane, a pore plate, a peristaltic pump, a pressure valve, a constant-level water tank, biological activated carbon and a hollow column. According to the method for improving the water quality, the hollow fiber membrane is mainly used for generating micro-bubble aeration to improve the biological activated carbon, change the biological membrane structure on the surface of the activated carbon and improve the metabolic decomposition capability on organic matters in sewage, so that the total organic carbon concentration of effluent is reduced by 32.0%, and the generation potential of disinfection byproducts is reduced by 43.7%. The method can continuously run for 300 days, is stable in running effect, does not need to additionally add chemical reagents, is simple to operate, saves running cost and human resources, and is a green and sustainable water treatment technology.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a method for improving the water quality of biological activated carbon with microbubbles. Background technique [0002] Biological activated carbon is a substance that removes organic pollutants from water. In the method of removing organic pollutants, activated carbon is generally used as a carrier, and a biofilm is constructed on its surface by taking advantage of its large specific surface area and developed pore structure. The removal of organic pollutants is achieved through the action of activated carbon adsorption and microbial metabolism. At present, this technology is often used in combination with ozone oxidation pretreatment as a drinking water treatment technology. In addition, biological activated carbon has also been practically used in the purification of polluted water sources, the treatment of industrial wastewater, etc., and has a wide range of applic...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the water quality of bio-activated carbon with micro-bubbles, so as to solve the problems in the prior art. The aeration method has the disadvantages of large oxygen consumption, high operating costs, and uneven aeration. It is simple and easy to implement, and does not require additional chemicals. It is a green water purification technology.

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