Team 8 Manure Management Proposal

1
Team 8 Manure Management Proposal

• Tangela Sinn
• Joel Douglas
• Brent Larson

2
1000 Head Beef Feedlot

• Located near Rudd, IA (northeast region)
• 5 miles away from significant bodies of water
• Unsurfaced, dirt feedlot
• 640 acres of corn/soybean rotation
• Settling basin/retention basin (aerobic)
• 1.5 beef cycles/year

3
System Dimensions

• 4 acre feedlot
• 417 x 417
• 1 liquid depth settling basin
• 28 L x 288 W
• 3 liquid depth aerobic retention basin
• 153 L x 418 W

4
Climatology

• Annual precipitation 32.5
• Annual runoff from unpaved feedlot ( of annual
  precipitation) 21
• Surface evaporation assumed to be negligible
• 25 year/24 hour rainfall 5.1
• 10 year/1 hour rainfall 2.2/hr

5
Production

• 1000 feeder cattle
• Buy at 600 lbs, sell at 1200 lbs
• 5.7M lb of feedlot waste annually
• 4 acre dirt feedlot surrounded by berm swale to
  redirect clean water

6
Collection

• Waste accumulates on the feedlot
• Tractor and bucket scrape feedlot after every
  cycle
• Rain washes some waste from feedlot to basins

7
Storage

• Feedlot
• Scraped solids 5.5M lb
• Settling basin
• 500K lb
• Retention basin
• Supernatant 10.3M lb
• Sludge 660K lb

8
Treatment

• Settling basin removes 40 of TS
• Retention basin sized for aerobic treatment
• 3 liquid depth, 418 wide by 153 long

9
Transfer

• Rain moves waste to basins
• Tractor-powered pump dewaters retention basin to
  a portable nozzle type irrigator
• Settling basin semi-solids are emptied via
  tractor and bucket to a flail spreader
• Neighbor retrieves unused waste with tank wagons
  or dump trucks

10
Utilization

• Waste is spread across 931 acres using a P
  strategy
• Portable nozzle type irrigation gun distributes
  retention basin liquid annually
• Flail spreader broadcasts settling basin and
  feedlot wastes
• Incorporated within one day to conserve nutrients

11
Utilization

• Harvested Crop Requires
• 407 lb N/acre
• 42 lb P/acre
• Waste
• 115K lb N available annually
• Requires 283 acres
• 39K lb P available annually
• Requires 931 acres

12
Nutrient Conservation and Losses

• Inputs
• Feedstuffs
• Manipulation includes feedstuff testing, feed
  additives, phytase use, and urea use
• Outputs
• Meat
• Manure

13
Diet Considerations

• Diets are balanced for energy, protein,
  phosphorus, and other smaller requirements.
• Protein fed as soybean meal to just below
  requirement and filled out with urea.
• Phytase enzyme used to increase availability of
  phosphorus in feed.
• Feed additives such as Rumensin used to improve
  feed efficiency.

14
Output Considerations

• Meat and manure both tested for nutrients. These
  nutrient levels are compared with inputs to
  ensure maximum diet efficiency.
• Efficiency improved by proper selection of animal
  breed, sex and weight groups.
• Partnership with grower exists to provide feedlot
  with uniform Angus/Shorthorn cross animals.

15
Nutrient Waste Control

• Settling and runoff retention basin allows for
  separate handling of solid and liquid portions of
  manure.
• Solid portion spread immediately, liquid portion
  used for annual irrigation.
• Manure spread on a phosphorus basis.

16
Odor

• Land Application
• Apply on non-windy days
• Apply in the morning
• Watch the wind directions

17
Odor

• Odor measurement
• Human Noses
• Electronic Nose

18
Odor

• Odor control housing
• Location of the retention basin and the settling
  basin
• Distance to neighbors
• Building orientation
• Windbreak if feasible
• Screens or structure modifications

19
Conclusion

• Aerobic treatment is feasible and desirable
• Testing meat, soil, all forms of waste for
  nutrient content is critical
• Conscientious waste and odor management will
  foster good will toward the facility