Agricultural wastewater treatment

**Agricultural Wastewater Treatment Techniques**:
– Required for continuous confined animal operations
– Mechanized treatment units similar to industrial wastewater plants
– Lower operational costs with ponds, settling basins, and facultative lagoons
– Animal slurries treated in anaerobic lagoons before disposal
– Constructed wetlands used for animal waste treatment

**Nonpoint Source Pollution Management**:
– Surface runoff from fields during rainstorms
– Major pollution source in many watersheds
– Erosion controls like contour plowing and riparian buffers
– Techniques to reduce sediment runoff and retain soil
– Integrated Pest Management techniques for pest control

**Sediment Runoff Prevention**:
– Largest agricultural pollution source in the US
– Excess sediment causes turbidity in water bodies
– Techniques like contour plowing and crop rotation reduce runoff
– Crop mulching and riparian buffers help retain soil
– Erosion controls important for sediment runoff prevention

**Nutrient Runoff Mitigation**:
– Nitrogen and phosphorus key pollutants in runoff
– Applied through commercial fertilizer, animal manure, or wastewater
– Nutrient management plans to mitigate water quality impacts
– Soil tests, realistic crop yield projections, and precision agriculture techniques
– Fertilizer application based on realistic yield goals

**Specific Agricultural Wastes Treatment**:
– Milking Parlour Wastes: Highly polluting due to organic strength
– Slaughtering Waste: Stronger in organic composition
– Vegetable Washing Water: Contaminated by soil and vegetable pieces
– Firewater: Contains environmentally lethal quantities of contaminants
– Treatment methods, disposal, and recycling options for each type of waste