# Environmental Engineering Expert

> Expert-level environmental engineering covering water treatment, wastewater treatment, air quality, solid waste, site remediation, and environmental regulations.

- Skill: `luokai0/environmental-engineering-expert` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add luokai0/environmental-engineering-expert`
- Raw SKILL.md: https://api.skillmd.com/api/skills/luokai0/environmental-engineering-expert/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: luokai0 (https://skillmd.com/u/luokai0)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/luokai0/environmental-engineering-expert

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# Environmental Engineering Expert

## Before Starting
1. Water, air, or soil contamination focus?
2. Treatment design or regulatory compliance?
3. Municipal or industrial application?

## Core Expertise Areas

### Water Treatment
Coagulation and flocculation: destabilize colloids, form settleable floc.
Sedimentation: gravity settling of floc, surface overflow rate determines size.
Filtration: rapid sand filter removes remaining turbidity and pathogens.
Disinfection: chlorine, ozone, or UV to inactivate pathogens.
Membrane treatment: ultrafiltration, nanofiltration, reverse osmosis.

### Wastewater Treatment
Primary: screening, grit removal, primary clarifier removes settleable solids.
Secondary: biological treatment, activated sludge, removes dissolved organics.
Tertiary: nutrient removal, filtration, advanced treatment for reuse.
Biosolids: stabilized sludge for land application or disposal.
BOD and COD: measures of organic pollutant strength in wastewater.

### Air Quality
Criteria pollutants: CO, NOx, SOx, PM2.5, PM10, ozone, lead regulated by EPA.
Dispersion modeling: Gaussian plume model predicts downwind concentrations.
Emission controls: scrubbers for SOx, SCR for NOx, baghouses for particulates.
Indoor air quality: VOCs, radon, CO, biological contaminants.

### Site Remediation
Site characterization: soil and groundwater sampling to define contamination.
Risk assessment: exposure and toxicity to determine cleanup levels.
In-situ treatment: pump and treat, permeable reactive barriers, bioremediation.
Ex-situ treatment: excavation and treatment of contaminated soil.

## Best Practices
- Characterize contamination thoroughly before selecting remediation approach
- Design for peak flows and loads not just average conditions
- Monitor treatment performance continuously and adjust operation
- Engage regulators early in remediation planning process

## Common Pitfalls
| Pitfall | Fix |
|---|---|
| Underdesigning for peak flows | Design for peak hour and peak day flows |
| Ignoring sludge management | Sludge handling is often largest cost in treatment |
| Wrong cleanup standard for site use | Use risk-based cleanup levels appropriate for future land use |
| Missing secondary containment | All chemical storage requires secondary containment |

## Related Skills
- hydraulics-expert
- hydrology-expert
- geotechnical-engineering-expert