Reactor and method for removing ammonia nitrogen in drinking water by virtue of enhanced filter and method thereof

Abstract

The invention relates to a reactor and a method for removing ammonia nitrogen in drinking water by virtue of an enhanced filter. The reactor is additionally provided with a biological nitrification region provided with a biological filler, and an aeration system under the circumstance that the previous water feed region, water distribution region, bearing layer and water discharge region of a sand filter are not changed; the added biological nitrification region and the previous filtering region of the sand filter are located in the same reactor and form a reaction region, the biological nitrification region is located above the previous filtering region of the sand filter, and an aeration head communicated with an air compressor of the aeration system by virtue of an air pipe is mounted under the biological filler. The reactor is capable of removing ammonia nitrogen and partial organic matters in water by virtue of enhanced nitrification of a microbial film grown on the surface of the biological filler and providing oxygen needed by organisms by virtue of aeration; in the filtering process, suspended particles, the microbial film and the like in water are intercepted, so that the biological safety is guaranteed and secondary pollution is prevented. The reactor and the method can be applied to purification treatment of drinking water such as an ammonia nitrogen polluted water source.

Description

technical field [0001] The invention belongs to the field of drinking water purification, and particularly relates to a reactor for removing ammonia nitrogen from drinking water by strengthening the filter tank based on a sand filter, and a method for removing ammonia nitrogen from drinking water by using the reactor. Background technique [0002] With the rapid development of my country's social economy, the amount of pollutant discharge has increased year by year, and the problem of water environment pollution has become prominent. Small cities and towns in my country mostly use surface water such as small and medium-sized rivers, lakes and reservoirs as drinking water sources. Affected by urban industrial wastewater, rural domestic sewage, domestic garbage, livestock and poultry breeding waste, and non-point source pollution of pesticides and fertilizers, urban and rural drinking water sources There are persistent or seasonal ammonia nitrogen exceeding the standard in many...

AI Technical Summary

Problems solved by technology

On the basis of the conventional process, a biological filter is added to strengthen the removal of ammonia nitrogen by using microbial nitrification. However, the head loss of the biological filter is large and the area is large, which is difficult to realize in the transformation of the water plant; biological pretreatment can effectively remove ammonia nitrogen in water , but it is necessary to add pretreatment structures at the front end of the conventional treatment process, which increases the floor space and increases the one-time construction investment, which is not conducive to popularization and application; the drinking water advanced treatment process of ozone / activated carbon and ozone / biological activated carbon can be better solved Pollution problems such as organic matter and ammonia nitrogen, but the investment and operating costs are high, and many water plants cannot bear it

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