ADCP/REP/84/21 - Inland Aquaculture Engineering













Table of Contents


AQUACULTURE DEVELOPMENT AND COORDINATION PROGRAMME

- Lectures presented at the ADCP Inter-regional Training Course
in Inland Aquaculture Engineering,
Budapest, 6 June-3 September 1983

UNITED NATIONS DEVELOPMENT PROGRAMME
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome. 1984

The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.

M-44
ISBN 92-5-102168-6

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© FAO 1984

This electronic document has been scanned using optical character recognition (OCR) software and careful manual recorrection. Even if the quality of digitalisation is high, the FAO declines all responsibility for any discrepancies that may exist between the present document and its original printed version.


Table of Contents


FOREWORD

SITE SELECTION AND ENGINEERING STUDIES

Chapter 1. Considerations in the Selection of Sites for Aquaculture

1. INTRODUCTION
2. FACTORS TO BE CONSIDERED IN SITE SELECTION

2.1 Ecological factors

2.1.1 Water supply
2.1.2 Water quality
2.1.3 Climate
2.1.4 Hydrological characteristics
2.1.5 Soil characteristics
2.1.6 Land

2.2 Biological and operational factors
2.3 Economic and social factors

3. REFERENCES

Chapter 2. Hydrological Information for Design and Operation of Agriculture Systems

1. TYPE OF INFORMATION NEEDED FOR DESIGN AND OPERATION
2. HYDROLOGICAL FORECASTING FOR OPERATION PURPOSES

2.1 Forecasting on Headwaters and Small Rivers
2.2 Forecasting the Regime of Large Rivers

3. DETERMINING DESIGN PARAMETERS

3.1 Reservoir Design
3.2 Wind Effects

4. DETERMINATION OF AREAL PRECIPITATION
5. THE REGIME OF SOIL MOISTURE
6. EVAPORATION AND EVAPOTRANSPIRATION
7. GROUNDWATER PROBLEMS ARISING IN CONNECTION WITH AQUACULTURE STRUCTURES

Chapter 3. Hydraulic Aspects in Designing Aquaculture Systems

1. WATER CONVEYING CAPACITY OF PIPELINES

1.1 Calculation of Head Loss
1.2 Fundamental Equation for Calculating Head Loss in and/or Discharge of Pipelines

2. WATER CONVEYING CAPACITY OF OPEN CANALS

2.1 Fundamentals for Calculating the Characteristics of Uniform Steady Flow in Open Canals, the Chézy Formula
2.2 The Velocity Coefficient (Chézy's C)
2.3 Characteristics of the Canal Cross-Section, Permissible Velocity
2.4 Computation of Cross-Section Dimensions or Discharge

3. OUTFLOW UNDER GATES AND MOVABLE WEIRS

3.1 Various Types of Outflow Under Gates and their Hydraulic Computation
3.2 Hydraulic Computations for Estimating Characteristics of Tailwater Apron and the Hydraulic Jump

4. FLOW OVER WEIRS

4.1 Sharp Crested Weirs
4.2 Weir Section Shaped to fit the Nappe, or Ogee Profile
4.3 Special Weirs
4.4 The Tailwater Apron Following Weirs

Chapter 4. Input Load Determination and Ecosystem Modelling

1. INPUT LOAD DETERMINATION AND ECOSYSTEM MODELLING IN THE DESIGN AND CONTROL OF PERFORMANCE OF FISH FARMS
2. WATER QUALITY MANAGEMENT PRINCIPLES AND SYSTEMS VIEWING
3. INPUT LOAD DETERMINATIONS
4. AQUATIC ECOSYSTEM MODELS
5. SUMMARIZING REMARKS
6. REFERENCES

Chapter 5. Soils Engineering for Design of Ponds, Canals and Dams in Aquaculture

1. INTRODUCTION - THE PROBLEMS ENCOUNTERED

1.1 Cohesive Soils

2. SITE EXPLORATIONS

2.1 Pond Areas and Canal Traces
2.2 Borrow Sites
2.3 Structure Sites

3. LABORATORY TESTS

3.1 Additional Tests for Pike and Dam Materials
3.2 Interpretation of the Results

4. DESIGNING FISH-POND DIKES AND DAMS
5. CONSTRUCTION SUPERVISION

DESIGN AND CONSTRUCTION OF FRESHWATER FISH FARMS

Chapter 6. Principles of Designing Inland Fish Farms

1. SITE SELECTION

1.1 Considerations in Site Selection
1.2 Basic Principles of Arrangement

2. PREPARATORY WORK

2.1 Technological Requirements
2.2 General Technical Data
2.3 Geodetical Data
2.4 Hydrological and Meteorological Data
2.5 Geotechnical Data
2.6 Water Quality Data

3. PURPOSE AND DIMENSIONING OF FISH FARM STRUCTURES

3.1 Hatchery
3.2 Fry Rearing Ponds and Basins
3.3 Nursery Ponds
3.4 Production Ponds
3.5 Fish Holding Facilities

4. FISH POND ARRANGEMENTS

4.1 Barrage Ponds
4.2 Contour Ponds
4.3 Paddy Ponds

5. EARTH STRUCTURES

5.1 Dams and Dikes
5.2 Feeder Canals
5.3 Drainage canals
5.4 Drain Ditch
5.5 Internal Pond Drains
5.6 Borrow Pits
5.7 Internal Harvesting Pits

6. DIKE PROTECTION

6.1 Wave Action
6.2 Biological Protection
6.3 Wave Control Linings

7. STRUCTURES

7.1 Monk Sluices
7.2 Open Sluices
7.3 Spillways
7.4 Fish Control Structures

8. REFERENCES

Chapter 7. Preparation of Plans and Cost Estimates and Tender Documents

1. INTRODUCTION
2. OUTLINE OR FEASIBILITY PLAN

2.1 Purpose of Outline Plan
2.2 Procedures for Preparation of Outline Plan

2.2.1 Site selection
2.2.2 Collection of maps and data
2.2.3 Outline plan

3. DETAILED PLAN

3.1 Reviewing Outline Plan

3.1.1 Topographic survey
3.1.2 Soil survey

3.2 Detailed Planning

3.2.1 Project report
3.2.2 Designs
3.2.3 Criteria for designing pond facilities
3.2.4 Preparation of detailed drawings

4. ESTIMATES

4.1 Preparation of Detailed Estimates

4.1.1 General abstract of cost
4.1.2 Abstract of cost
4.1.3 Analysis of rates
4.1.4 Quantity estimates

5. TENDER DOCUMENTS

5.1 Advertisement for Bids (Notice to Contractors, or Invitation to Bid)
5.2 Draft Contract

5.2.1 Types of contracts
5.2.2 General provisions or general conditions
5.2.3 Special provisions or special conditions

5.3 Statements of Work, Services and Technical Specifications

5.3.1 Types of specifications
5.3.2 Specification writing

5.4 Bill of Quantities
5.5 Schedule of Execution
5.6 Bidding Schedule
5.7 Approved Drawings

6. REFERENCES
ANNEX 1 HYDROLOGICAL FORMULAS
ANNEX 2 GENERAL PROVISIONS
ANNEX 3 SPECIAL PROVISIONS
ANNEX 4 CONSTRUCTION OF CHIPATA FISH FARM IN ZAMBIA
ANNEX 5 Bill No........ Construction of Outlets
ANNEX 6 Bill of Quantities and Contract Cost
ANNEX 7 Bidding Schedule

Chapter 8. Hydraulic Formulas Used in Designing Fish Farms

1. LIST OF SYMBOLS, DIMENSIONS AND UNITS
2. DESIGN FORMULAS FOR CHANNEL FLOW
3. DESIGN FORMULAS FOR HYDRAULIC STRUCTURES

3.1 Design Formulas for Intakes

3.1.1 Open intake (sluice)
3.1.2 Pipe intake

3.2 Design Formulas for Inlets

3.2.1 Free fall pipe inlet
3.2.2 Submerged pipe inlet
3.2.3 Open flume inlet

3.3 Design Formulas for Outlets

3.3.1 Types of outlets

3.4 Design Formulas for Culvert

3.4.1 Discharge formulas

3.5 Design Formulas for Vertical Falls

3.5.1 Discharge formulas

3.6 Design Formulas for Spillways

3.6.1 Recommended design floods for the spillways
3.6.2 Types of spillways
3.6.3 Discharge formulas

3.7 Design Formulas for Siphons

3.7.1 Types of siphons
3.7.2 Discharge of siphon

4. DISCHARGE OF WELLS

4.1 Well Types
4.2 Well Discharge in a Confined Aquifer
4.3 Well Discharge in an Unconfined Aquifer
4.4 Radius of Influence
4.5 Screen Entrance Velocity
4.6 Recommended Well Diameter

5. DESIGN FORMULA FOR SCREEN
6. DESIGN FORMULA FOR FILTER
7. DESIGN FORMULAS FOR FLOW IN PIPES

7.1 Conveyance Method
7.2 Minor Losses
7.3 Local Losses

8. DESIGN FORMULAS FOR PUMPING

8.1 Types of Pumps Used in Aquaculture
8.2 Total Dynamic Heads
8.3 Specific Speed
8.4 Net Positive Suction Head (NPSH)
8.5 Power Requirement
8.6 Determination of the Most Economical Pipe Diameter

Chapter 9. Problems on Pond Construction and Maintenance on Cat Clay Soils

1. INTRODUCTION
2. FORMATION OF ACID SULPHATE SOILS
3. FIELD IDENTIFICATION
4. PROBLEMS OF POND CONSTRUCTION AND PLANNING
5. REMEDIES FOR PONDS BUILT ON ACID SULPHATE SOILS
6. MANAGEMENT MEASURES
7. SUMMARY AND CONCLUSIONS
8. REFERENCES

Chapter 10. The Organization and Supervision of Fish Farm Construction

1. INTRODUCTION
2. PREPARATIONS FOR FISH FARM CONSTRUCTION

2.1 Preparatory Process

2.1.1 Methods used in organization of construction work
2.1.2 Detailed plans required of the contractor
2.1.3 Choosing and operating the equipment

3. EXECUTION OF CONSTRUCTION WORKS

3.1 Approach Road
3.2 Public Services
3.3 Temporary Buildings
3.4 Planning Material to be ordered
3.5 Ordering Equipment and Instruments
3.6 Organization and Transport of Plant and Equipment
3.7 Site Clearing
3.8 Setting Out of Buildings, Dikes, etc.
3.9 Earthworks
3.10 Structures
3.11 Buildings
3.12 Site Finishing

4. SUPERVISION OF CONSTRUCTION BY THE ENGINEER

4.1 The Engineer's Tasks during Construction

DESIGN OF FISH HATCHERIES

Chapter 11. Technology for Fish Propagation

1. GENERAL TECHNOLOGY FOR FISH PROPAGATION

1.1 Culture and Management of Brood Stock
1.2 Environmental Conditions for Culturing Breeders

2. PRACTICAL TECHNOLOGIES OF THE ARTIFICIAL PROPAGATION OF CULTIVATED FISH SPECIES

2.1 Common carp

2.1.1 Reproduction
2.1.2 Economic characterization
2.1.3 Artificial propagation

2.2 Chinese Herbivorous Fishes

2.2.1 Reproduction
2.2.2 Economic characterization
2.2.3 Artificial propagation
2.2.4 Sexual differentiation
2.2.5 Handling of spawners
2.2.6 Hypophysation
2.2.7 Keeping injected fish in the hatchery
2.2.8 Procurement of eggs and milt
2.2.9 Fertilization of eggs
2.2.10 The ripening, attending and hatching of the eggs
2.2.11 Keeping the larvae
2.2.12 Biological and technological data spawning ages in years

2.3 European Catfish

2.3.1 Reproduction
2.3.2 Economic characterization
2.3.3 Artificial propagation

2.4 Pike Perch

2.4.1 Reproduction
2.4.2 Economic characterization
2.4.3 Propagation
2.4.4 Sexual differentiation
2.4.5 Spawning in fish ponds
2.4.6 Hypophysation
2.4.7 Hatching
2.4.8 Biological and technical data

2.5 Pike

2.5.1 Reproduction
2.5.2 Economic characterization
2.5.3 Artificial propagation
2.5.4 Sexual differentiation
2.5.5 Hypophysation
2.5.6 Hatching
2.5.7 Biological and technical data

2.6 Semi-Artificial Propagation of Indian Carps

2.6.1 Propagation
2.6.2 Economic features
2.6.3 Way of distinguishing male or female spawners
2.6.4 Age of fish at first propagation
2.6.5 Hypophysation
2.6.6 Keeping of spawners and spawning
2.6.7 Hatching of the seed
2.6.8 Rearing of larva
2.6.9 Biological and technical figures

Chapter 12 Planning of Fish Hatcheries

1. BASIC DATA
2. PROCESSING OF BASIC DATA

2.1 Planning the Time
2.2 Determination of Main Parameters

3. CALCULATION OF WATER REQUIREMENT OF A FISH HATCHERY
4. TEMPERATURE REQUIREMENT OF HATCHING
5. TECHNOLOGICAL DESIGN
6. CONNECTED FACILITIES

RACEWAYS, CAGES AND OTHER FLOW-THROUGH SYSTEMS IN AQUACULTURE

Chapter 13 Deign and Construction of Raceways and Other Flow-Through Systems

1. INTRODUCTION
2. WATER SUPPLY

2.1 Conventional Flow-Through Systems
2.2 Intensive Flow-Through Systems

3. THE FUNDAMENTALS OF THE DESIGN OF FLOW-THROUGH SYSTEMS

3.1 Water Pumping System
3.2 Tank Design

3.2.1 Size
3.2.2 Material
3.2.3 Additional equipment

REFERENCES

Chapter 14 Freshwater Cage for Fish

1. INTRODUCTION
2. SITE SELECTION FOR CAGE CULTURE

2.1 Characteristics of the Site

2.1.1 Water quality
2.1.2 Water depth
2.1.3 Water current

2.2 Environmental Considerations

2.2.1 Effects of cage fish farming on the environment
2.2.2 Effects of the environment on cage fish farming
2.2.3 Service and operational considerations

3. THE MAIN PARTS OF A CAGE FARM

3.1 Netting
3.2 Floats
3.3 Frame
3.4 Mooring
3.5 Shore Facilities

4. RESULTS OF THE CAGE FISH CULTURE EXPERIMENTS IN HUNGARY

4.1 Culture of Common Carp (Cyprinus Carpio) in Net Cages
4.2 Net Cage Culture of Sheatfish (Silurus Glanis)
4.3 Net Cage Culture of Bester (a hybrid of Huso huso × Acipenser ruthenus)
4.4 Biculture of Sheatfish (Silurus glanis) and Silver Carp (Hypophthalmichthys molitrix) in a Net Cage
4.5 Net Cage Polyculture of Carp and Herbivorous Fish
4.6 Fish Polyculture in an Enclosure

RECIRCULATION SYSTEMS IN AQUACULTURE

Chapter 15 Recirculatig Systems and Re-use of Water in Aquaculture

1. INTRODUCTION
2. DESIGN OF RECIRCULATION SYSTEMS

2.1 Design of Oxygen Supply
2.2 Design for Ammonia Removal
2.3 Design of Complex Recirculation Systems
2.4 Calculation of Water Requirement
2.5 Other Design Criteria

3. THE PROPER UTILIZATION OF CAPACITY
4. GENERAL CONSIDERATIONS
5. REFERENCES

MECHANIZATION OF FISH FARM OPERATIONS

Chapter 16 Design of Pumping Stations

1. GROUPING OF PUMPING STATIONS
2. PUMP WELL
3. SETTING OF PUMPS
4. CHARACTERS OF PUMP SETTING
5. CAPACITY OF THE PUMP STATION
6. CALCULATION OF HEAD

6.1 Entrance Loss:
6.2 Resistance of Suction Screen
6.3 Resistance of Foot Valve
6.4 Pressure Loss Coming from Pipe Friction (h3)
6.5 Valves Built in the Pipeline (Gate Valve, Check Valve, etc.)
6.6 Pressure Loss from Inversion (h7)

7. PIPE SYSTEM IN THE PUMP HOUSE
8. VALVES
9. PUMPS

9.1 Choice of the Proper Type of Pump
9.2 Control of Delivering Capacity

10. AUXILIARY FACILITIES

10.1 Priming
10.2 Cranes

Chapter 17 Artificial Feeding in Intensive Fish Culture

1. INTRODUCTION
2. TABLES AND DIAGRAM USED FOR INTRODUCTION OF LECTURE
3. REFERENCES

Chapter 18 Fish Feed Production, Storage and Transportation

1. INTRODUCTION
2. CEREALS

2.1 Cereal Harvesting and Treatment
2.2 Moisture Content of Cereals
2.3 Storage of Cereals

2.3.1 Vacuum storage
2.3.2 Storage with ventilation
2.3.3 Cold storage

2.4 Chemical Treatment

3. TYPES OF DRIERS AND SOME DRYING TECHNOLOGIES
4. STORAGE OF FEEDS
5. MACHINERY FOR PREPARATION OF COMPOUND FEED
6. IMPORTANT POINTS IN THE PREPARATION OF MEALY MATERIALS
7. TYPES OF MILL CONSTRUCTION

7.1 Types of Feed Mixing Apparatus
7.2 Preparation of Pellets
7.3 Types of Driers

8. AUXILIARY PARTS OF THE FEED MILL
9. MACHINERY FOR TRANSPORTATION
10. REFERENCES

Chapter 19 Mechanized Feeding in Aquaculture

1. INTRODUCTION
2. FISH FEED STORAGE FACILITIES
3. FEED TRANSPORTING EQUIPMENT
4. FEED DISTRIBUTORS

4.1 Stationary Feeding Equipment

4.1.1 Demand feeders
4.1.2 Automatic feeders

4.2 Mobile Feeding Equipment

4.2.1 Feeding carts
4.2.2 Feeding boats

5. REFERENCES

Chapter 20 Mechanized Harvesting in Fish Culture

1. INTRODUCTION
2. HERDING OPERATIONS

2.1 Mechanical Driving
2.2 Hydraulic Driving
2.3 Electrical Driving

3. CATCHING OPERATIONS

3.1 Mechanical Fish Lifting
3.2 Hydraulic Fish Lifting

4. FISH SORTING
5. REFERENCES

Chapter 21 Aeration and Oxygenation in Aquaculture

1. OXYGEN BUDGET OF FISH PONDS

1.1 Diurnal Changes of Dissolved Oxygen Content
1.2 Factors Influencing the Dissolved Oxygen Content of Pond Water

1.2.1 Production of macro- and microorganisms in the water
1.2.2 Oxygen consumption by pond water
1.2.3 Oxygen consumption by the pond bottom
1.2.4 Oxygen consumption by fish
1.2.5 Natural diffusion caused by wind action
1.2.6 Artificial control of the dissolved oxygen content of water

2. AERATION DEVICES FOR FISH PONDS

2.1 Hydraulic Type Fish Pond Aerators
2.2 Air Diffusion Type Fish Pond Aerators

3. UTILIZATION OF PURE OXYGEN IN INTENSIVE FISH CULTURE SYSTEMS

3.1 Oxygen Absorption and its Devices
3.2 Pipeline Injection of Oxygen
3.3 U-tube Oxygenation

4. BASIC PRINCIPLES OF THE DESIGN OF FISH POND AERATORS

4.1 Equilibrium Concentration of Oxygen in Water
4.2 Mass Transfer Processes of Aerators

5. DIMENSIONING OF AERATORS

5.1 Bubble Aeration
5.2 Examples for Dimensioning Fine Bubble Aerators
5.3 Aeration with Ejectors
5.4 Aeration with Paddle Wheels

6. REFERENCES

MAINTENANCE OF AQUAFARMS AND HATCHERIES

Chapter 22 Maintenance of Fish Farms

1. FISH POND MAINTENANCE

1.1 Maintenance of Earthworks
1.2 Maintenance of Biological Slope Protection
1.3 Maintenance of Water Control Structures
1.4 Steel Structures
1.5 Stone and Concrete Linings

2. RECONSTRUCTION WORKS

2.1 Reconstruction of Earthworks

2.1.1 Dikes
2.1.2 Internal drainage canals and harvesting pits
2.1.3 Canal

2.2 Reconstruction of Water Control Structures

3. MECHANIZATION OF MAINTENANCE AND RECONSTRUCTION WORKS

3.1 Mechanization of Fish Pond Maintenance
3.2 Mechanized Maintenance of Canals

FISH HEALTH ASPECTS IN AQUACULTURE PLANNING

Chapter 23 Fish Health Viewpoints in Planning Fish Producing Systems

1. INTRODUCTION
2. FISH DISEASES

2.1 Important Types of Fish Diseases

2.1.1 Not infectious diseases
2.1.2 Infectious diseases

3. TECHNICAL ADVICE FOR PLANNING FISH BREEDING SYSTEMS

3.1 Location of Fish Farms
3.2 Organizing Water Supply System

3.2.1 Insufficient water supply (figure 3)
3.2.2 Good water supply (figure 4)

3.3 Hatcheries
3.4 Nursery Ponds
3.5 Ponds for Larger and Marketable Fish

4. PLANNING FISH PONDS

4.1 Water Change
4.2 Aeration of Ponds
4.3 Bottom Treatments
4.4 Removal of Mud
4.5 Bird Problem

5. INTENSIVE FISH BREEDING SYSTEMS
6. REFERENCES

ECONOMIC ASPECTS OF AQUACULTURE PLANNING

Chapter 24 Economic Aspects of Aquafarm Construction and Maintenance

1. INTRODUCTION
2. ECONOMIC CONSIDERATIONS IN SITE SELECTION

2.1 Topography
2.2 Hydrology
2.3 Soil Conditions

3. ECONOMIC CONSIDERATIONS IN CONSTRUCTION
4. ESTIMATION OF CONSTRUCTION AND EQUIPMENT COSTS

4.1 Construction Costs
4.2 Equipment Costs
4.3 Case Study

4.3.1 Costs of construction
4.3.2 Costs of equipment

5. ECONOMIC EVALUATION

5.1 Comparison of Initial Costs
5.2 Cost-Return Analysis

5.2.1 Capital costs
5.2.2 Annual operating costs
5.2.3 Gross revenue
5.2.4 Indicators of performance
5.2.5 Example of cost-return analysis

5.3 Partial Budgeting

5.3.1 Example

5.4 Present Value Method

5.4.1 Example

6. REFERENCES

APPENDIX A - Fish Pond Technologies

APPENDIX B - Aquacultural Rotation

APPENDIX C - Fish-cum-pig Culture

APPENDIX D - Silver Carp Culture in Sewage Ponds

APPENDIX E - General Characteristics of Hungarian Fisheries