DENITRIFICATION MATRIX RETAINING MATERIAL, NOZZLE FOR DENITRIFICATION MATRIX AND METHOD FOR CLEANING WATER QUALITY

摘要

PROBLEM TO BE SOLVED: To provide a denitrification matrix retaining material easily carrying out operation and management for denitrification treatment, and also easily obtaining a sufficient denitrification effect.

SOLUTION: In the denitrification matrix retaining material 10 including a matrix accommodation part 12 surrounded by a container wall 11 comprising a number of fibrous substance and placed in a system to be treated having nitrogen-containing water in a state of being accommodated with a fine-grained denitrification matrix 14 in the matrix accommodation part 12, the container wall 11 is configured so as to allow permeation of the nitrogen-containing water and also inhibit permeation of the fine-grained denitrification matrix 14.

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