Method for carrying out synchronous nitrification treatment and denitrification treatment on percolate by using mineralized refuse reaction bed

Abstract

The invention discloses a method for carrying out synchronous nitrification treatment and denitrification treatment on percolate by using a mineralized refuse reaction bed. A device is arranged. The device comprises the mineralized refuse reaction bed and an aerating apparatus. A solid sampling port is formed in the surface of the mineralized refuse reaction bed, an outlet water sampling port and an aerating pipe are arranged on the lower portion of the mineralized refuse reaction bed, the aerating pipe is connected with a rotor flow meter, the rotor flow meter is connected with an air pump, and the air pump is connected with a control box; a ventilating pipe is arranged in the center of the device, the top of the ventilating pipe is sealed, holes are punched in the wall of the ventilating pipe, the lower portion of the ventilating pipe is connected with the aerating pipe, and the ventilating pipe is wrapped by a sand net; a cover and a funnel are arranged on the top of the mineralized refuse reaction bed, a valve is arranged between the funnel and the cover, and a PVC board with evenly-distributed holes is arranged at the bottom of the cover; the mineralized refuse reaction bed is filled with a gravel layer, a mineralized refuse layer and a beveled gravel layer, the beveled gravel layer is supported by an inclined plate with evenly-distributed holes, and a temperature probe is embedded into the mineralized refuse layer; synchronous nitrification and denitrification can happen in the mineralized refuse reaction bed through adjustment and setting of the aeration rate and operating parameters. By means of the method, synchronous nitrification and denitrification on mineralized refuse can be achieved, and therefore the purpose of treating waste with waste can be achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for synchronous nitrification and denitrification treatment of leachate produced by urban biochemical garbage through a mineralized garbage reaction bed. Background technique [0002] Landfill leachate is a kind of high-concentration organic wastewater with complex components, which has the characteristics of high organic load, high content of ammonia nitrogen and heavy metals, poor biodegradability, and large changes in water quality and water volume. [0003] Since the 1990s, some scholars have carried out some research work on the treatment of landfill leachate based on the mineralized landfill reaction bed under anaerobic environment. However, it was found that the removal rate of ammonia nitrogen was better, but the removal rate of total nitrogen was low. Later, some scholars improved the traditional anaerobic mineralized garbage bed an...

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Problems solved by technology

However, it was found that the removal rate of ammonia nitrogen was better, but the removal rate of total nitrogen was low

Later, some scholars improved the traditional anaerobic mineralized garbage bed, and put forward the technical conception of quasi-aerobic mineralized garbage bed to treat landfill leachate, and found that the removal rate of ammonia nitrogen was very high, and the removal rate of total nitrogen was very high at the beginning, but it was not ideal in the later stage.

Previous studies have shown that the mineralized garbage bed has a good treatment effect on ammonia nitrogen, but it cannot avoid the problem of high nitrate nitrogen content in the effluent, resulting in a low removal rate of total nitrogen.

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