Impact of excess oil and grease on the wastewater treatment system

News

25/07/2024

Fats, oils and grease are by-products of the cooking process such as vegetable oils, meat and dairy products. Grease travels from the sink into the sewer system during the cleaning process. The grease will then solidify, causing blockages, damaging drainage pipes and causing problems in the wastewater treatment process.

So how does grease affect the drainage and wastewater systems?

Clogging of water pipes

This is the biggest harm caused by grease because the cost to overcome and repair is huge. When fats and grease enter the drainage system, they will mix with food and other sanitary waste, clumping and hardening in the pipes.

Unpleasant odors are caused by excess grease, and grease-related pipe blockages can lead to sewer overflows due to reduced capacity or broken sewer and drain pipes. This can cause serious environmental consequences such as soil pollution and risks to public health.

In addition, the system has been put into operation but the pipes are clogged, causing the entire system to be stopped. for Business.

In many cases, when calculating the initial construction, the design engineer also has to calculate the size of the water pipes and increase the size of the water storage tanks to ensure an unobstructed use process.

Reduces wastewater treatment efficiency

Grease is a carbon compound that is difficult to decompose due to its durable molecular structure. So when entering the wastewater treatment system, it will hinder and inhibit the growth process of microorganisms. There are many oils and fats in water that hinder the ability of microorganisms to absorb oxygen or prevent air from dissolving into water. Microorganisms therefore gradually die and the treatment tanks are no longer effective. At this time, brown foam floats on the surface of the aerobic tank, and the foam even overflows. The air conditioning tank causes unpleasant odors and foam in the system.

Causes equipment damage

In addition to causing blockages, excess grease also affects equipment such as water pump impellers. Stirring paddles, trash screens, air blowing discs, chemical injectors... These are all devices that are easily affected by excess grease, so strong measures are needed to remove excess grease from the Waste water treatment system.

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