---
title: "Open dumping and sanitary landfill"
subject: "Sanitary Engineering"
chapter: 10
key: "semester_6/sanitary_engineering:open-dumping-vs-landfill"
source: https://www.bctengineer.com/q/semester_6/sanitary_engineering/open-dumping-vs-landfill
site: BCT Engineering
---

# Open dumping and sanitary landfill

Sanitary Engineering · Chapter 10: Solid Waste Disposal

- Asked in: 2078 Chaitra, 4 marks; 2080 Chaitra, 4 marks (asked 2 times)
- Video: [The Hidden Engineering of Landfills](https://www.youtube.com/watch?v=HRx_dZawN44) — Practical Engineering
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_6/sanitary_engineering/open-dumping-vs-landfill
- Whole chapter: https://www.bctengineer.com/md/semester_6/sanitary_engineering/chapter-10

## Question

Discuss in brief about open dumping and sanitary landfill (Sanitary Landfill, Landfill and Open dumping).

## Short answer

Open dumping is uncontrolled waste disposal without cover or environmental controls, causing odour, vermin, water pollution, and health hazards. Sanitary landfill is an engineered site with daily cover, compaction, liners, leachate collection, and gas vents, minimizing pollution and nuisances. A general landfill may have partial controls but lacks full sanitary features.

## Answer

#### Open dumping

Open dumping is the uncontrolled disposal of solid waste on open land, river banks or roadsides without covering, compaction or any environmental control. It is the cheapest method but causes:

- bad odour, flies, rodents and the spread of disease;
- burning of waste (air pollution) and fires;
- leachate that pollutes surface and ground water;
- loss of aesthetics and land value, and scavenging by animals and people.

#### Sanitary landfill

A sanitary landfill is an engineered disposal site where waste is spread in thin layers, compacted and covered with soil daily. It has a liner (clay or HDPE), leachate collection, gas vents, drainage and monitoring wells. The final cover is soil with vegetation. When managed well, it has no odour or vermin problems and causes little pollution.

#### Landfill (general)

A landfill is any land disposal site where waste is buried. A controlled landfill has some of the controls of a sanitary landfill (daily or periodic cover, fencing, supervision) but not always a full liner or gas collection.

| Open dumping | Sanitary landfill |
|---|---|
| Uncontrolled, no design | Engineered and planned |
| No daily cover or compaction | Compaction and daily soil cover |
| Leachate pollutes water | Liner and leachate treatment |
| Odour, flies, rodents | Nuisances controlled |
| Very low cost | Higher cost |
| Not environmentally acceptable | Accepted method of final disposal |

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. What is open dumping?
   A. Engineered burial
   B. Burning with heat recovery
   C. Composting
   D. Uncontrolled disposal without cover or compaction
   Answer: D. It lacks any environmental control. (Key point: Open dumping)

2. How does sanitary landfill differ in cost?
   A. Higher cost than open dumping
   B. Lower cost
   C. Same
   D. Free
   Answer: A. Engineering controls increase cost. (Key point: Comparison)

3. What is a controlled landfill?
   A. Same as open dump
   B. Some controls like cover and fences, not always liner or gas collection
   C. Full sanitary landfill
   D. Incinerator
   Answer: B. It sits between open dump and sanitary landfill. (Key point: Controlled landfill)

## Related in Sanitary Engineering

- [Sanitary landfill: merits and demerits](https://www.bctengineer.com/question.md?key=semester_6%2Fsanitary_engineering%3Asanitary-landfill-merits) — Sanitary Engineering, chapter 10, asked 4×

## Related in other subjects

- [Landfill volume and area calculation](https://www.bctengineer.com/question.md?key=semester_7%2Fenvironment_and_pollution_control%3Alandfill-area-volume-numerical) — Environment and Pollution Control, chapter 5