Cass pool efficient ammonia nitrogen modification method

Abstract

The invention discloses an efficient ammonia-nitrogen removal transformation method of CASS pools, and belongs to the field of sewage treatment system transformation. The efficient ammonia-nitrogen removal transformation method is used for the upgrading and reconstruction of the conventional sewage treatment plants taking CASS pools as the main process, and comprises the following steps: two horizontal water partition walls with meshes are arranged in a main reaction zone in the CASS pool at intervals, are located between two groups of sludge pumps in the main reaction zone, and are configured to divide the main reaction zone into an activated sludge reaction zone, a biological enhanced reaction zone and an effluent zone that are connected sequentially; one part of each horizontal water partition wall below an effective fluid level in the CASS pool is composed of multiple paved meshes with the same area; the biological enhanced reaction zone is filled with an efficient ammonia-nitrogen removal enhancing carrier. The efficient ammonia-nitrogen removal transformation method of CASS pools is simple to operate and easy to implement, can effectively intercept the effective carrier to realize the effect of enhanced biological treatment, satisfies the requirements of smooth flow of the CASS pool, and is applicable to the transformation of efficient sewage treatment pools by applying the CASS process in combination with the carrier.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a transformation method for efficiently removing ammonia and nitrogen in a sewage treatment CASS pool. Background technique [0002] Excessive ammonia nitrogen content in the water body can easily cause eutrophication of the water body, cause the deterioration of the water body, destroy the ecological environment of the water body, and affect the living environment of the surrounding residents. [0003] Biological denitrification technology is currently the most widely used treatment method in the sewage treatment industry. It uses the nitrification reaction of nitrifying bacteria to convert ammonia nitrogen in sewage into nitrate or nitrite under suitable reaction conditions to achieve the removal of ammonia nitrogen. However, with the improvement of people's living standards and the rapid development of the industrial economy, the amount of sewage discharge and the content of am...

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Problems solved by technology

There are also big problems in the combination of this technology and the existing biological treatment process: the size of the high-efficiency deammonization and nitrogen strengthening carrier is small, only 3-5mm, and special supporting equipment is required to effectively intercept the carrier, and the supporting equipment must be difficult to clog It is easy to realize the high-efficiency interception of the carrier and the sewage treatment effect in the ordinary activated sludge reaction tank of continuous operation, but it is not easy to realize the intermittent activated sludge process, such as the CASS process, and there is no combination of the CASS process and the high-efficiency carrier. Successful cases and related literature reports

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