NGHIÊN CỨU NÂNG CAO HIỆU QUẢ XỬ LÝ NƯỚC RỈ RÁC BẰNG CÔNG NGHỆ SBR DÒNG LIÊN TỤC – ICEAS=REMOVAL OF NITROGEN IN LANDFILL LEACHATE USING THE CONTINUOUS SBR TECHNOLOGY

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Tác giả: Duc Trung Le, Thanh Phong Nguyen, Van Phuoc Nguyen

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Công nghệ và Thực phẩm (Tên mới: Tạp chí Khoa học Đại học Công Thương), 2017

Mô tả vật lý: tr.18

Bộ sưu tập: Metadata

ID: 498445

Thêm vào giỏ

Nghiên cứu này được thực hiện với mục đich nâng cao hiệu quả xử lý nước rỉ rác của mô hình công nghệ SBR – ICEAS (dòng liên tục), đặc biệt đối với thành phần nitơ. Ảnh hưởng của các yếu tố vận hành hệ thống quan trọng đến hiệu quả quá trình xử lý như thời gian lưu nước (HRT) và chu kỳ xử lý đa được khảo sát và đánh giá cụ thể. Kết quả nghiên cứu cho thấy khi vận hành mô hình công nghệ SBR dòng liên tục với thời gian chu kỳ xử lý 5 giờ (sục khi 180 phút và khuấy trộn 40 phút, lắng 60 phút và gạn nước 20 phút) hiệu suất xử lý các thành phần N-NH4+, TN và COD trong nước rỉ rác đạt khoảng 99 %, 75 % và 76 % theo thứ tự. Kết quả nghiên cứu thực nghiệm so sánh trong cùng điều kiện vận hành cho thấy mô hình công nghệ SBR dòng liên tục có hiệu quả xử lý các thành phần ô nhiễm của nước rỉ rác cao hơn công nghệ SBR truyền thống, đặc biệt thành phần nitơ (TN sau xử lý đạt QCVN 25:2009/BTNMT, Cột A). Từ khóa: nước rỉ rác, SBR dòng liên rục, chu kỳ xử lý.This research was conducted with the aim to improve the treatment effect of landfill leachate with continuous SBR technology, especially for nitrogen removal. The influences of the operational factors that can strongly affect the effectiveness of treatment process such as hydraulic retention time (HRT) and periodic processing cycle were specifically studied. The results indicated that the continuous SBR technological system with the operational conditions of 4 days retention and 5 hours processing cycle (180 min aeration, 40 min mixing, 60 min sedimentation and 20 min decantation) the treatment effects of N-NH4+, TN and COD reached approximate 99 %, 75 % and 76 %, correspondingly. Under similar operational conditions, comparative treatment experimental results indicated that the treatment effects of landfill leachate contaminants of the continuous SBR technology higher than that of the ordinary SBR technology, especially for nitrogen composition (TN of treated landfill leachate reached VN standard 25:2009/MONRE, A Column) Keywords: landfill leachate, continuous SBR, periodic processing cycle.

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