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 synchronous nitrification and denitrification treatment of leachate in a mineralized garbage reaction bed. A device is provided, including a mineralized waste reaction bed and an aeration device. The surface of the mineralized waste reaction bed is provided with a solid sampling port, and the lower part is provided with a water sampling port and an aeration pipe. The aeration pipe is connected to a rotameter, and the rotameter is connected to an air pump. , the air pump is connected to the control box; there is a ventilation pipe in the center, the top is sealed, the pipe wall is perforated and the lower part is connected to the aeration pipe, and the outside of the ventilation pipe is wrapped with sand net; the top of the mineralized waste reaction bed is covered with a funnel, and the funnel and the cover are set The valve is covered with PVC board with uniform holes; the mineralized waste reaction bed is filled with gravel layer, mineralized waste layer and sloped gravel layer, the sloped plate with uniform holes supports the sloped gravel layer, and the temperature probe is buried in the mineralized waste layer; Adjust and set the aeration rate and operating parameters to make synchronous nitrification and denitrification occur in the mineralized garbage reaction bed. The method of the invention realizes synchronous nitrification and denitrification in mineralized garbage, and achieves the purpose of treating waste with waste.

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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