Nghiên cứu xử lý ammonium trong nước thải chế biến thủy sản bằng công nghệ SNAP

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Tác giả: Thị Trâm Lê, Công Đức Trương, Thị Thủy Viên

Ngôn ngữ: Vie

Ký hiệu phân loại: 624 Civil engineering

Thông tin xuất bản: Tạp chí Khoa học - Công nghệ Thủy sản, 2019

Mô tả vật lý: 78-85

Bộ sưu tập: Metadata

ID: 418866

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Nuôi trồng, đánh bắt và chế biến thủy sản (CBTS) là một ngành kinh tế quan trọng của Việt Nam. Để xuấtkhẩu các sản phẩm chế biến thủy sản ra nước ngoài thì không chỉ cần một công nghệ sản xuất sạch mà còn cần phải giảm thiểu ô nhiễm môi trường từ các công đoạn sản xuất, xử lý nước thải đảm bảo đạt tiêu chuẩn trước khi thải ra môi trường. Đặc trưng của ngành sản xuất chế biến thủy sản là hàm lượng Nitơ, Photpho rất cao, khó có thể xử lý bằng các biện pháp thông thường. Công nghệ xử lý Ammonium truyền thống chủ yếu dựa vào sự kết hợp của hai quá trình là Nitrate và khử Nitrate hóa. Xử lý Nitơ theo cách này đòi hỏi mặt bằng lớn mà không phải nơi nào cũng đáp ứng được. Bài báo này đề cập tới việc xử lý Nitơ trong nước thải chế biến thủy sản sau xử lý kỵ khí bằng công nghệ SNAP. Cụ thể là tìm ra được tỷ số COD/N, giá trị pH, tải trọng đầu vào phù hợp để xử lý nước thải CBTS. Sử dụng nước thải chế biến cá Basa đã qua xử lý kỵ khí của Công ty Cổ phần Xuất nhập khẩu Thủy sản Cửu Long An Giang để vận hành mô hình xử lý. Đồng thời sử dụng 2 loại giá thể là giá thể xơ dừa và sợi nhựa tổng hợp để vi sinh vật bám dính, tìm ra hiệu quả tối ưu của hai giá thể trên để áp dụng vào thực tế., Tóm tắt tiếng anh, Farming, catching and processing seafood is an important economic sector in Vietnam. For exportingseafood processing products to foreign countries, it is not only necessary to produce clean technology, butalso to minimize environmental pollution from production stages, to ensure that wastewater meets standards.The characteristics of the seafood processing industry are very high nitrogen and phosphorus, diffi cult to treatwith conventional measures. The traditional ammonium treatment technology is based on a combination oftwo processes, nitrate and nitrifi cation. Nitrogen treatment in this way requires a large area that is not alwaysresponsive. This paper deals with the treatment of nitrogen in wastewater discharged after anaerobic treatment by SNAP. Specifi cally, we found the COD/N ratio, pH value, suitable input load for processing fishery waste water. Anaerobic digested waste water of Cuu Long An Giang Fisheries Import and Export Joint Stock Company was used to operate the treatment model. At the same time, by using two types of substrate is coconut fiber and synthetic fi ber to make increase microorganism adhesion, optimal effect of the types was found and can be applied in practice.

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