Executive Summary & Operational Context
Managing thousands of kilograms of wet manure daily is the biggest operational headache for commercial dairy farms (>20 animals). An automated screw press solid-liquid separator mechanically squeezes raw slurry into odorless, dry compost solids (55% moisture) and nutrient-rich liquid tea, turning waste disposal into a profitable business.
Produces dry organic manure that can be bagged and sold for ₹5 to ₹8/kg or used directly as organic bedding inside cow cubicles.
How a Screw Press Solid-Liquid Separator Operates
Raw dairy shed slurry (flushed dung and urine) collects in a sump pit equipped with a heavy-duty submersible chopper pump. The slurry is pumped into the separator cylinder containing a high-torque stainless steel extrusion screw rotating inside a cylindrical wedge-wire screen (0.5 mm slot size). The screw drives solids toward the discharge cone while liquid drains through the screen. Heavy counterweights at the discharge door exert adjustable mechanical pressure, squeezing moisture down to 50-55%.
How to Implement on Your Dairy Farm
Install 10,000L Concrete Collection Sump
Construct a sloped sump equipped with an agitator to keep dung solids suspended before pumping into the machine.
Bag Dry Solids as Organic Compost
Stack the separated solids in aerated windrows for 10 days of thermophilic curing, then bag for nursery and orchard sales.
Channel Liquid Tea into Drip Irrigation
Filter the separated nutrient liquid and inject directly through venturi into fodder fields to cut chemical fertilizer usage.
Recommended Breeds for this System
Related Dairy Guides in Shed & Infrastructure
Dairy Farm Shed Design: Loose Housing vs Tie-Stall System Layout & Dimensions
Rubber Cow Mats for Dairy Sheds: Thickness, Joint Protection & 1.5L Milk Yield Gain
Biogas (Gobar Gas) Plant 2m³ to 10m³: Construction Cost, MNRE Subsidy & Slurry Fertilizer
FAQ
Frequently Asked Questions: Cow Dung Dewatering Machine: Solid-Liquid Separator Cost, Dry Compost & Vermicompost
Need a Custom TMR Feed or Bank Loan Calculation?
Use our interactive ICAR-NDRI Total Mixed Ration calculator or explore Pashu KCC loan scales for all 73 Indian livestock breeds.