ĐÁNH GIÁ KHẢ NĂNG XỬ LÝ NƯỚC THẢI CHẾ BIẾN THỦY SẢN SỬ DỤNG CÔNG NGHỆ BÃI LỌC TRỒNG CÂY NGẬP NƯỚC

Tóm tắt

Constructed wetland system is one of the useful methods to remove organic pollutants in wastewater in
general and in seafood processing wastewater in particular because it is cheap, easy to operate, and
suitable for large areas. In this work, seafood processing wastewater after pretreatment was flowed
through the constructed wetland system using sedge (Cyperus). The experimental results showed that
the wastewater treatment efficiency is from 65 % to 90 %, especially the sharp reduction of N and COD
amount. All parameters for assessing the pollution level of seafood processing wastewater after
treatment are within the allowable standards according to QCVN 11 – MT:2015/BTNMT (column B) –
National technical regulations on seafood wastewater when discharged into water.