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Processing of Grit and Mineral Waste

Sustainable treatment and recycling of sewage grit, street sweepings, gully contents, sewer sludge, material from grit traps and mineral infrastructure waste

On the basis of its wealth of experience in developing complete grit treatment systems, HUBER is able to provide a tailored concept for each individual grit treatment project.

Treatment of Grit, Road Sweepings and Gully Waste

On the basis of its wealth of experience in developing complete grit treatment systems, HUBER is able to provide a tailored concept for each individual grit treatment project.

Grit, or mineral waste in general, accumulates during wastewater treatment as well as when cleaning sewers and stormwater tanks. Road cleaning and the emptying of gullies and separators also produce quantities of grit that have to be disposed of.

In practically all cases, the grit is contaminated with organic substances and often also with inorganic material of various sizes.

HUBER has decades of experience in all fields of grit processing and the suitable solution for any application.

 

HUBER provides the following solutions for the treatment of such mineral wastes:

Treatment of sewage treatment plant grit: Grit from the grit chamber of a wastewater treatment plant is always contaminated with organic material. The grit washing process cleans the grit from undesired organic material in one process step, thus reducing disposal costs.

Processing of sewer grit and road sweepings: Mineral material, which can be contaminated with large amounts of organic and inorganic substances, is processed in a multi-stage process. The raw material is separated into different fractions and can be disposed of or recycled at low cost.

 

FAQ

Frequently Asked Questions

HUBER has solutions for the processing of sewer grit and grit from sewage treatment plants as well as road sweepings. Depending on the quantities and composition of the material to be processed as well as other general conditions, we design a tailor-made HUBER solution for grit treatment.

In municipal wastewater treatment, grit is separated in a grit trap. This separation takes place by sedimentation, i.e. the grit settles in the grit chamber after sufficient retention time. However, since there are not only mineral substances such as grit in the wastewater, but also many organic solids, these also settle to a greater or lesser extent. As a result, when the grit is discharged from the grit chamber, it sometimes contains a large amount of organic solids. This contamination of the grit with organic matter hinders, among other things, cost-effective landfilling or reuse of the grit.

Grit washing with a HUBER Grit Washer RoSF4 solves this problem and produces clean grit with an organic content of less than 3% loss on ignition, the HUBER Grit Washer RoSF G4E reduces the organic content to ≤ 5%.

The DWA Code of Practice M369 specifies an average amount of grit trap material of 60 l per 1000 m³ of wastewater.

Contact

If you have any questions, please do not hesitate to contact us!

We are always open to your enquiries and want to offer you the best possible support for your projects.

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