waste management in urban areas

• Garbage → result of human activity in urban → tremendous pressure on the environment → accumulate if not transported, water bodies
• Trash is secured at the landfill, was not able to secure the surrounding environment due to poor management (Open Dumping).

ISSUES

1. Waste dumped in landfill 60-70% → easy to decompose organic matter;
2. Leachate → value of BOD (Biological Oxygen Demand Biological Oxygen = Needs) to reach thousands and even tens of thousands of ppm, heavy metals;
3. Decomposition process occurring in the landfill is anaerobic, thus forming harmful gases such as methane, H2S, mercaptan and other gases that can cause fires

Non Technical Issues:

1. Limited land;
2. Hygiene problems have not been the priority in the region;
3. Hygiene problem is a shared responsibility between government and society;
4. Law and legislation has not been implemented or enforced.

Waste Minimization

Efforts to reduce the volume, concentration, toxicity, and hazard level of waste from production processes → by way of reduction at source and / or utilization of waste.

Can provide economic benefits, among others:

a. Reducing the cost of transportation to final disposal;

b. Reducing the cost of final disposal;

c. Increasing revenue from the sale and use of waste.

HANDLING WASTE 3-R

Waste handling 3-R is a concept for dealing with waste in a way: reduce / reduce (R1), reuse / re-use (R2), and recycle / recycling (R3)

starting from the source