Tag Archive for: variable concentrations

Emergency Dump Ponds

Emergency dump ponds are designed to receive large volumes of slurry or process fluid during plant upsets or maintenance shutdowns. These ponds temporarily hold overflow materials from extraction or upgrading operations until they can be reprocessed or safely treated.

Challenges:
Dump ponds contain unpredictable mixtures of bitumen, sand, water, and process chemicals, often with fluctuating levels and extreme temperatures. Solids settle rapidly, creating heavy sludge that clogs suction lines and damages standard pumps. Access and response time are critical during emergencies, so reliability is essential.

Solution:
Hevvy/Toyo’s submersible pumps are ready-to-deploy and built for rugged, emergency conditions. Their agitator design breaks up settled solids and restores flow quickly, while abrasion-resistant construction handles unpredictable slurries. The modular design enables fast setup and recovery, giving operators a dependable tool for rapid response in emergency pond situations.

Coal Pile Runoffs

Coal pile runoff systems manage water that drains from coal storage areas during rainfall or washdown operations. This runoff often contains coal fines, sediments, and hydrocarbons, which must be collected and treated to prevent contamination of surrounding waterways.

Challenges:
Runoff water is highly abrasive and varies in solids concentration depending on rainfall or operational activity. Pumps must handle fluctuating flows and dirty water containing fine coal particles without clogging or premature wear. Maintaining reliability in outdoor, exposed environments adds further complexity.

Solution:
Hevvy/Toyo’s submersible slurry pumps are built to handle variable, abrasive coal runoff streams. Their recessed impellers pass solids easily, while agitators prevent sediment buildup in sumps or collection pits. Corrosion-resistant materials and mechanical seal protection ensure reliable, low-maintenance operation even in the harshest outdoor environments.

Fly Ash and Bottom Ash

Fly ash and bottom ash are the by-products of coal combustion in thermal power plants. Fly ash consists of fine particles carried by flue gases, while bottom ash settles at the furnace base. Both need to be collected, transported, or disposed of safely to comply with environmental regulations and maintain plant efficiency.

Challenges:
These ashes are abrasive, dense, and often mixed with water to form a heavy slurry that wears out pump components quickly. Variable solids concentration and temperature fluctuations make consistent flow difficult. Traditional pumps experience rapid erosion, clogging, and seal failures in ash-handling systems.

Solution:
Hevvy/Toyo’s submersible and horizontal slurry pumps feature hardened materials and open or recessed impellers designed for abrasive service. Their high-chrome wet ends, heavy-duty bearings, and optional agitators handle high-solid ash slurries with ease. The result is longer service life, reduced maintenance, and dependable ash management in demanding power plant conditions.