Sludge Management & Closure Procedures for Anaerobic Lagoons

4/16/00

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Table of Contents

Sludge Management & Closure Procedures for Anaerobic Lagoons

What is Sludge?

Properties of Sludge

Nutrient Concentrations

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Sludge Storage Volume

Undersized Lagoons

Principles of Sludge Management

Minimizing Sludge Production

Lagoon Operation Sludge Removal:

“Trigger Point”

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Monitor Sludge Depth

Measuring Sludge Depth

Measuring Sludge Depth

Estimating Lagoon Volume

When Removing Sludge

Land Applying Sludge

Land Applying Sludge

Land Applying Sludge - P Issues

Application Options

Irrigating Sludge

Application Using Spreader Equipment

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Pump and Haul Systems

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Umbilical Hose Application Systems

Injection options

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Manure Spreader

Taking a Sludge Sample Prior to agitation - Step 1

Taking a Sludge Sample Prior to agitation 

Taking a Sludge Sample Prior to agitation

Sampling Sludge Prior to Agitation 

Taking a Sludge Sample During agitation

Sludge Removal Techniques

Hiring a Custom Applicator

Hiring a Custom Applicator

Working with a Custom Applicator

Agitation

Lagoon Agitation - Equipment

Lagoon Agitation - Management

Dewatering

Dewatering

Lagoon Closure

Lagoon Closure - Options

How much sludge needs to be removed? 

“Complete” Closure

Breaching the Lagoon Berm

Conversion to Farm Pond 

Author: Ron E. Sheffield 

Email: ron_sheffield@ncsu.edu 

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