Strengths

- Simple technology

- High efficiency in removing charged suspended and dissolved particles.

- Low cost

- Removes solids and improves filtration.

Weaknesses

- The infrastructure costs and pharmacy costs were high, meanwhile, it is noted that use of flocculants can result in secondary pollution [62]

- Continuous input of chemicals required.

- Skilled operators required.

Threats

- waste maybe toxic if contains heavy metals

Opportunities

- Specific components can be removed.