What is the difference between oxidation pond and oxidation ditch?

What is the difference between oxidation pond and oxidation ditch?

1) It can be easily maintained. 2) It is hard to be effected by load fluctuations and forms only a little sludge. 3) OD can be easily controlled by changing the rotation of the rotor and the dipping depth. 4) It requires relatively little energy as the rotor is operated efficiency.

What is the length of the oxidation ditch?

The model is approximately fi ve times smaller than the real-scale ditch, having the following dimensions: 12.8 m long, 3.0 m wide and 0.75 m deep. The surfaces of the oxidation ditch inlet and outlet are located on the top of the ditch.

What are the 3 stages of wastewater treatment Slideshare?

There are three main stages of the wastewater treatment process, aptly known as primary, secondary and tertiary water treatment.

What is oxidation ditch process?

An oxidation ditch is a modified activated sludge biological treatment process that utilizes long solids retention times (SRTs) to remove biodegradable organics. Oxidation ditches are typically complete mix systems, but they can be modified to approach plug flow conditions.

What is the shape of the oxidation ditch?

An oxidation ditch is a large holding tank in a continuous ditch with an oval shape similar to that of a racetrack. The ditch is built on the surface of the ground and is lined with an impermeable lining.

How does oxidation pond work?

Oxidation ponds, also called lagoons or stabilization ponds, are large, shallow ponds designed to treat wastewater through the interaction of sunlight, bacteria, and algae. During the process of photosynthesis, the algae release oxygen needed by aerobic bacteria. …

What is the minimum depth of water in the oxidation pond?

0.3m
Explanation: The minimum depth of water to be kept in oxidation pond is 0.3m and the depth of sludge deposited in the pond is 0.02m per year.

What are the steps in wastewater treatment?

Treatment Steps

1. Step 1: Screening and Pumping.
2. Step 2: Grit Removal.
3. Step 3: Primary Settling.
4. Step 4: Aeration / Activated Sludge.
5. Step 5: Secondary Settling.
6. Step 6: Filtration.
7. Step 7: Disinfection.
8. Step 8: Oxygen Uptake.

What is the process of wastewater treatment?

The Wastewater Treatment Process

1. Stage One — Bar Screening.
2. Stage Two — Screening.
3. Stage Three — Primary Clarifier.
4. Stage Four — Aeration.
5. Stage Five — Secondary Clarifier.
6. Stage Six — Chlorination (Disinfection)
7. Stage Seven — Water Analysis & Testing.
8. Stage Eight — Effluent Disposal.

Why oxidation ditch is used?

Oxidation ditches can be used to treat wastewater. After pretreatment, water flows through the oxidation ditches, where RBC’s and microorganisms in returned activated sludge break down the B.O.D. Then the sludge is removed in a clarifier and the remaining water is disinfected.

What is the function of the activated sludge process?

The activated sludge process is a multi-chamber reactor unit that uses highly concentrated microorganisms to degrade organics and remove nutrients from wastewater, producing quality effluent. The goal is to maintain aerobic conditions and to keep the activated sludge suspended.

Which bacteria is used in oxidation pond?

The algal biomass in the oxidation pond utilizes the inorganic compounds in the presence of sunlight and carbon dioxide released during the oxidation of organic waste. Chlorella, Euglena, Scenedermus and Microcystis are the most common genera of algae predominating in the stabilization pond.

What do you need to know about oxidation ditches?

An oxidation ditch is a modified activated sludge biological treatment process that utilizes long solids retention times (SRTs) to remove biodegradable organics. Oxidation ditches are typically complete mix systems, but they can be modified to approach plug flow conditions.

How is activated sludge added to the oxidation ditch?

The oxidation ditchis a circular basin through which the wastewater flows. Activated sludge is added to the oxidation ditch so that the microorganisms will digest the B.O.D. in the water. This mixture of raw wastewater and returned sludge is known as mixed liquor.

Which is better oxidation ditch or aeration basin?

Introduction Treatment of wastewater using an oxidation ditch is relatively similar to wastewater treatment in a packaged plant. But the oxidation ditch replaces the aeration basin and provides better sludge treatment.

How does a facultative pond and oxidation ditch work?

Facultative pond functions aerobically at the surface while anaerobic conditions prevail at the bottom. They are often about 1 to 2 m in depth. The aerobic layer acts as a good check against odour evolution from the pond. 26. Oxidation DitchThe oxidation ditch is a modified formof “extended aeration” of activatedsludge process.