After biologic reduction zone is developed and biochemical layer is produced fully, organic contaminants can be naturally biodegraded.
只有当生物还原带形成后，生化层才发育成熟，包气带对有机物能进行有效地降解和清除，具有良好的天然降解功能。
After biologic reduction zone is developed and biochemical layer is produced fully, organic contaminants can be naturally biodegraded.
只有当生物还原带形成后，生化层才发育成熟，包气带对有机物能进行有效地降解和清除，具有良好的天然降解功能。
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