O3-BAC water treatment process and matched drinking water treatment device thereof

Abstract

The invention provides an O3-BAC water treatment process and a matched drinking water treatment device thereof. The water treatment process comprises the following steps: 1) introducing original water into a pre-ozone contact column to contact with the ozone; 2) discharging water from the pre-ozone contact column to be mixed with coagulant, and placing the coagulant and the discharged water into a coagulating sedimentation device to perform coagulating sedimentation; 3) filtering the water from the coagulating sedimentation device by a quartz sand filter and a fine filter; 4) introducing the water discharged from the fine filter into a post-ozone contact column to contact with the ozone; and 5) filtering the water from the post-ozone contact column by an activated carbon filter and an ultrafiltration membrane system. Through the accurate control of technical parameters, the discharged water can meet the water quality standard of drinking purified water (CJ94-1999). The treatment process and the device can effectively remove impurity, color, smell, odor, ammonia, nitrite, organism and organic halide and so on, and allow the water to achieve the high-quality healthy drinking water standards. The process is not limited by a seasonal factor.

Description

technical field [0001] The invention relates to a drinking water treatment process and equipment, in particular to an O 3 -BAC water treatment process and its supporting drinking water treatment equipment. Background technique [0002] o 3 -BAC (ozone-biological activated carbon) advanced treatment process is a water treatment technology that has been studied more at home and abroad. o 3 -BAC process is a process that integrates four technologies of activated carbon physical and chemical adsorption, ozone chemical oxidation, biological oxidative degradation and ozone sterilization. Since the 1960s, some European countries have used biological activated carbon technology to treat drinking water and achieved good results. The water treatment plant in Dusseldorf, Germany first adopted ozone-biological activated carbon technology, and my country began to study O 3 -BAC process, currently there are water plants in operation in many regions of the country. [0003] o 3 - Th...

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Problems solved by technology

However, the process for NH 4 + The removal effect of -N fluctuates greatly with the change of seasons, such as the literature "Hangzhou Nanxing Water Plant O 3 -Analysis of the Operation Effect of the BAC Process" (China Water Supply and Sewage, Volume 22, Issue 17) pointed out that the O 3 -BAC process is performed on NH from November to February of the following year 4 + The removal rate of -N is only 61-79.89%, while at other times for NH 4 + The removal rate of -N can reach more than 97%

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