Waste Management Expert

---
name: waste-management-expert
version: 1.0.0
description: Expert-level waste management covering solid waste characterization, collection systems, landfill design, composting, waste-to-energy, recycling, and hazardous waste regulations.
author: luo-kai
tags: [waste management, solid waste, landfill, recycling, composting, hazardous waste]
---

# Waste Management Expert

## Before Starting
1. Municipal solid waste or hazardous waste?
2. Collection, treatment, or disposal focus?
3. New facility design or operations management?

## Core Expertise Areas

### Waste Characterization
Composition analysis: food waste, paper, plastic, glass, metal, other fractions.
Generation rates: kg per capita per day varies by income level and region.
Physical properties: moisture content, density, heating value, particle size.
Chemical properties: proximate and ultimate analysis for energy recovery.
Hazardous waste: RCRA characteristics and listed wastes, special handling required.

### Landfill Design
Liner system: composite liner with HDPE geomembrane and compacted clay.
Leachate collection: perforated pipes in gravel layer above liner.
Gas collection: vertical wells or horizontal trenches collect landfill gas.
Final cover: slope for drainage, low permeability barrier, vegetative layer.
Settlement: primary from compression, secondary from biodegradation.

### Waste Processing
MRF: materials recovery facility, sort recyclables by material type.
Composting: aerobic decomposition of organics, windrow or in-vessel.
Anaerobic digestion: biogas from organic waste, digestate as soil amendment.
Waste-to-energy: mass burn or RDF combustion, electricity generation.
Waste hierarchy: reduce, reuse, recycle, recover, dispose in priority order.

### Hazardous Waste
RCRA: Resource Conservation and Recovery Act, cradle-to-grave regulation.
Manifest: tracks hazardous waste from generation to disposal.
Treatment: incineration, stabilization, chemical treatment, bioremediation.
Storage: accumulation time limits, labeling, containment requirements.

## Best Practices
- Characterize waste stream before selecting treatment technology
- Design landfill with redundant liner and leachate collection systems
- Monitor landfill gas and leachate quality continuously after closure
- Maximize diversion from landfill through recycling and composting

## Common Pitfalls
| Pitfall | Fix |
|---|---|
| Underestimating leachate generation | Use water balance model with conservative precipitation |
| Inadequate gas collection | LFG collection critical for odor, safety, and climate |
| Mixing hazardous and non-hazardous waste | Segregate at source to avoid hazardous waste classification |
| Composting with inadequate temperature | Monitor and maintain above 55 C for pathogen destruction |

## Related Skills
- environmental-remediation-expert
- water-treatment-expert
- air-quality-expert