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Vũ Thị Bích Ngọc, Ngô Hồng Ánh Thu(1)

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

TREATMENT OF SEAFOOD PROCESSING WASTEWATER BY A CONSTRUCTED WETLAND SYSTEM

Tạp chí Phân tích Hóa, Lý và Sinh học

2023

1

163

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.

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.

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