Báo cáo chuyên đề Bể Aerotank
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TỔNG LIÊN ĐOÀN LAO ĐỘNG VIỆT NAM
TRƯỜNG ĐẠI HỌC TÔN ĐỨC THẮNG
KHOA MÔI TRƯỜNG VÀ BẢO HỘ LAO ĐỘNG
QUÁ TRÌNH CÔNG NGHỆ MÔI TRƯỜNG
CHUYÊN ĐỀ
BỂ AEROTANK
Tp. Hồ Chí Minh, tháng 11 năm 2014
MỤC LỤC
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2. MỤC TIÊU
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3. NỘI DUNG THỰC HIỆN
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4. PHƯƠNG PHÁP THỰC HIỆN
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5. GIẢI TRÌNH
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CHƯƠNG 1: TỔNG QUAN
1.1. NƯỚC THẢI
1.1.1. Khái niệm về nước thải
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1.1.2. Thành phần gây nhiễm bẩn nước
• Các chất hữu cơ
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1.2. KHÁI QUÁT QUÁ TRÌNH XỬ LÝ SINH HỌC HIẾU KHÍ
1.2.1. Giới thiệu chung
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1.2.2. Điều kiện nước thải đi vào quá trình
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1.3. XỬ LÝ NƯỚC THẢI BẰNG PHƯƠNG PHÁP BÙN HOẠT TÍNH
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Hình 1.2: Bể bùn hoạt tính
1.4. QUÁ TRÌNH SINH TRƯỞNG VI SINH VẬT
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Hình 1.4Sự gia tăng tốc độ tăng trưởng theo cấp số nhân với sự
gia tăng nồng độ cơ chất tối đa.
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1.4.1. Nhiệt độ
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Hình 1.3.1 : Đồ thị biểu diễn sự phụ thuộc của tốc độ sinh trưởng vi sinh vật vào
nhiệt độ
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1.4.2. pH
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1.4.3. Oxy
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CHƯƠNG 2: BỂ AEROTANK
2.1. GIỚI THIỆU SƠ LƯỢC VỀ BỂ AEROTANK
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Hình 2.1: Bể Aerotank
2.2. ĐIỀU KIỆN ÁP DỤNG
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2.3. CẤU TẠO
• Cấu tạo của bể aerotank phải thoả mãn 3 điều kiện:
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Hình 2.3.1: Bùn trẻ
› #8F<8++v1;•.,39Z,;3+Q9\9.3„F:9E97F;•--)*+, /
Hình 2.3.2: Sơ đồ cấu tạo bể aerotank
Hình 2.3.3: Bể aerotank trong thực tế
• 67;z0,u+EU.598.MSFp,/3493†.3;3….3=,„,*+.5;t<4,*x3P
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2.4. NGUYÊN LÝ HOẠT ĐỘNG.
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2.5. PHÂN LOẠI
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2.5.1. Aerotank truyền thống
• 6JºggF5šM?39P0\0z,vLMN6JEu,(g›«>¨
Hình 2.5.1: Bể Aerotank truyền thống
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2.5.2. Bể Aerotank tải trọng cao nhiều bậc
• 6J«ggF5šM?3z,*s.MUML.5T¹?£>?,
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Hình 2.5.2.1Bể Aerotank tải trọng cao nhiều bậc ngang
Hình 2.5.2.2: Bể Aerotank tải trọng cao nhiều bậc dọc
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2.5.3 Bể aerotank có ngăn tiếp xúc với bùn hoạt tính đã ổn định
Hình 2.5.3: Sơ đồ bể aerotank có ngăn tiếp xúc với bùn hoạt tính đã ổn định
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2.5.4. Bể aerotank thông khí kéo dài
Hình 2.5.4: Sơ đồ bể aerotank thông khí kéo dài
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Hình 2.5.5: Sơ đồ bể aerotank thông khí cao có khuấy đảo hoàn chỉnh
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2.6. ƯU, NHƯỢC ĐIỂM CỦA BỂ AEROTANK
2.6.1. Ưu điểm.
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2.7. ỨNG DỤNG
2.7.1. Xử lý nước thải bệnh viện
2.7.1.1. Giới thiệu
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2.7.1.2. Vật liệu và phương pháp áp dụng
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Hình 2.7.2: Sơ đồ hệ thống XLNT bệnh viện đa khoa Đồng Tháp
