Tag Archive for: excessive wear

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Leach Feed and Tank Transfer Between Stages

What it is:
Leaching dissolves valuable metals using chemical solutions in a series of tanks. Reliable transfer between stages ensures consistent residence time and extraction efficiency.

Challenges:
Leach solutions are corrosive and often contain suspended solids that can cause erosion and chemical attack. Pump failures disrupt recovery and increase reagent costs.

Solution:
Hevvy/Toyo pumps in stainless or elastomer-lined materials resist corrosion and abrasion, maintaining steady flow between leach tanks. Their recessed impellers handle solids without plugging, ensuring uninterrupted leaching performance.

Tank Cleanout Services

Tank cleanout services remove accumulated solids, sludge, and debris from equalization tanks, aeration basins, or clarifiers. Regular cleanouts are essential for maintaining capacity, preventing corrosion, and ensuring optimal process efficiency in wastewater plants.

Challenges:
Settled solids in tanks form compacted layers that are difficult to remove. These mixtures may include rags, sand, grease, and biological sludge — each posing different challenges to pump performance. Confined space entry, downtime, and equipment wear make manual cleaning costly and inefficient.

Solution:
Hevvy/Toyo submersible agitator pumps provide a safer, more efficient cleanout solution. The agitator breaks up settled sludge, allowing it to be pumped out completely without draining the tank. With recessed impeller designs, abrasion-resistant materials, and simple setup, Hevvy/Toyo pumps make tank cleanout faster, safer, and more cost-effective for municipalities and contractors alike.

Barge Unloading

Barge unloading in municipal wastewater operations typically involves transferring sludge, grit, or biosolids from transport barges to treatment or storage facilities. The process requires high-capacity pumping systems that can handle thick, abrasive, or viscous material efficiently.

Challenges:
Barge contents often settle during transport, creating dense, compacted sludge that’s difficult to mobilize. Standard pumps experience suction loss, clogging, and wear when handling high solids or abrasive material. Setup flexibility and mobility are also critical in temporary or remote unloading sites.

=Solution:
Hevvy/Toyo’s submersible dredge and slurry pumps excel in barge unloading. Their agitator systems re-suspend solids for complete barge evacuation, while wear-resistant materials withstand abrasive conditions. Compact and portable, they can be quickly deployed and moved between sites — providing reliable, high-throughput pumping for municipal sludge and solids transfer operations.

Grit Chambers

Grit chambers are designed to remove sand, gravel, and other heavy inorganic particles from raw wastewater before it enters treatment processes. This step protects downstream equipment — such as pumps, clarifiers, and digesters — from abrasion and mechanical damage caused by suspended solids.

Challenges:
Grit is extremely abrasive and settles quickly, forming dense layers at the bottom of chambers and sumps. Standard pumps often suffer from rapid impeller wear, seal failure, and suction loss due to sediment accumulation. Periodic manual cleanouts are time-consuming, hazardous, and disruptive to operations.

Hevvy/Toyo Solution:
Hevvy/Toyo’s agitator-equipped submersible pumps are ideal for grit removal and chamber cleanouts. The agitator re-suspends settled solids, allowing complete sump evacuation without manual intervention. High-chrome or rubber-lined wet ends resist abrasion, while recessed impellers minimize wear — delivering long-lasting, low-maintenance performance in abrasive wastewater environments.

Hog Waste Lagoons

Hog waste lagoons store liquid manure and wastewater from livestock operations before treatment or land application. These lagoons contain a thick slurry of solids, fats, and organic matter that must be agitated and transferred regularly to prevent buildup and environmental hazards.

Challenges:
Hog waste is dense, corrosive, and prone to stratification, forming thick sludge layers at the bottom that are difficult to mobilize. Gas generation and solids accumulation can lead to odor, safety, and compliance issues. Pumps must operate reliably in abrasive, corrosive, and biologically active conditions.

Solution:
Hevvy/Toyo’s heavy-duty agitator pumps are ideal for lagoon agitation and transfer. Their high-chrome wet ends, mechanical seal protection, and robust motors handle corrosive, high-solid waste with ease. The powerful agitator keeps sludge suspended for full lagoon turnover, enabling efficient pumping and reducing the need for manual or mechanical dredging.

Phosphoric Acid Production

Phosphoric acid is produced by reacting phosphate rock with sulfuric acid, generating a slurry that includes gypsum and other by-products. The resulting mixture is highly abrasive, corrosive, and dense, requiring robust slurry-handling systems for filtration, clarification, and transfer.

Challenges:
The acid-rock reaction creates a highly erosive and low-pH slurry that destroys conventional pumps rapidly. Scaling, crystallization, and solids buildup further contribute to clogging and wear. Pump failures in these circuits lead to contamination, high maintenance costs, and process interruptions.

Solution:
Hevvy/Toyo pumps are engineered to thrive in aggressive phosphoric acid environments. Their high-chrome or rubber-lined wet ends resist abrasion, while acid-resistant materials prevent corrosion. Recessed impeller and agitator options keep gypsum solids in suspension, minimizing blockages and ensuring smooth, continuous operation in both production and recovery circuits.

TiO₂ Production

Titanium dioxide (TiO₂) production involves processing titanium-bearing ores through sulfate or chloride methods to produce a white pigment used in coatings, plastics, and paper. The process generates highly abrasive and corrosive slurries containing metal oxides, acids, and fine solids that must be pumped between reaction, filtration, and recovery stages.

Challenges:
TiO₂ slurries are extremely dense and abrasive, causing rapid wear on impellers, casings, and seals. The combination of solids and aggressive chemical content accelerates corrosion, while temperature and viscosity fluctuations make flow control difficult. Downtime for maintenance can severely disrupt continuous production lines.

Solution:
Hevvy/Toyo pumps are built for the harsh dual demands of abrasion and corrosion. With high-chrome or elastomer-lined wet ends, recessed impellers, and optional stainless or alloy materials, they resist both wear and chemical attack. Their agitator technology prevents solids settling in tanks and pipelines, ensuring smooth, consistent slurry handling throughout TiO₂ production.

Mature Fine Tailings (MFT)

Mature fine tailings are a by-product of oil sands extraction, composed of fine clay, silt, water, and residual bitumen. They accumulate in large tailings ponds and require controlled movement for treatment, dewatering, or reclamation processes.

Challenges:
MFT is extremely viscous and thixotropic — it behaves like a solid at rest and a liquid when agitated. Its density and fine particles make it difficult to pump using conventional equipment, leading to frequent plugging, suction loss, and excessive wear. The abrasive nature and variable composition also shorten equipment life and increase downtime.

Solution:
Hevvy/Toyo’s agitator-equipped submersible pumps are engineered to handle high-viscosity, fine-particle slurries like MFT. The built-in agitator re-suspends solids, preventing settling and maintaining consistent flow. With hardened wet ends, recessed impellers, and high-chrome or elastomer linings, Hevvy/Toyo pumps provide reliable, low-maintenance performance in one of the toughest applications in the oil sands industry.

Mill Scale Pits

Mill scale pits collect steel flakes, cooling water, and oil residues generated during hot rolling and descaling processes. These pits act as settling basins that separate heavy mill scale particles from process water before recirculation or disposal.

Challenges:
Mill scale is extremely abrasive, dense, and prone to settling, creating heavy sludge that is difficult to pump. Standard centrifugal pumps often fail due to clogging, excessive wear, or seal breakdown caused by the mixture of metallic solids, oils, and water. Maintenance and downtime in scale pits can disrupt production lines and increase operational costs.

Solution:
Hevvy/Toyo agitator pumps are engineered specifically for heavy, abrasive sludge applications like mill scale. Their robust wet-end design, high-chrome construction, and built-in agitators prevent settling and keep the slurry moving. By maintaining solids in suspension and minimizing wear, they deliver consistent pit cleaning and reliable long-term performance.