Question 1

Can these equipments remove all water pollutants?

Accepted Answer

No. Equipments used for ultrafiltration can remove only pollutants which exist in water either in solid form or converted to a solid form (with chemicals during pretreatment) that can be filtered. For the overwhelming majority of water treatment plants operated worldwide this is the highest level of cleaning they are capable of – or even lower. Equipments using reverse osmosis technology can remove substances existing also in solution, therefore they can remove almost all (polluting) substances, with a few exceptions.

Question 2

Which pollutants cannot be removed from water with ultrafiltration equipment?

Accepted Answer

Pollutants existing in water in solution or which cannot be converted to a solid form through treatment with chemicals. In practice this generally means heavy metals (e.g. of industrial origin) and organic micro-pollutants (e.g. herbicides, as well as ammonium/nitrite/nitrate pollutants.

Question 3

Can this equipment also clean seawater?

Accepted Answer

No. HERON Water Treatment Unit was designed to treat fresh water, cannot remove the salt content of seawater. The RO unit of CEWPU-RO equipment is based on brackish water, i.e. it can clean fresh water that is influenced by seawater (brackish water), can reduce the salt content to a certain level.

Question 4

What does semi-automatic operation mean?

Accepted Answer

Daily operation of the equipment (flushing the filters, etc.) is fully automatic, but the CIP operations require some operator intervention relatively rarely (preparation of chemicals / water guiding). Notwithstanding, these operations are also supported by automation equipment. The strength of semi-automatic operation is that it is cost-efficient.

Question 5

What is the quality of components incorporated into this equipment?

Accepted Answer

For the construction of the HERON Water Treatment Unit we exclusively use components and devices designed and manufactured for industrial purposes to ensure durability and reliability.

Question 6

Similar equipment with ultrafiltration or reverse osmosis technology with similar capacity is much cheaper. Why should I opt for the more expensive HERON equipment?

Accepted Answer

Our equipment have industrial design, are constructed with reliable industrial components of renowned manufacturers, designed for continuous 7/24 operation. Many equipment that seem to be similar are constructed with “household” quality components, with lower durability and higher probability of defect. Many cheaper equipment with ultrafiltration or reverse osmosis technology are fit only for post-purification of mains water, these are not capable of cleaning more polluted surface waters without the appropriate pre-treatment phases. Often backwash of the ultrafilter is not ensured, or it is possible only with manual operation. Our equipment were designed for purification of more polluted, generally surface waters, thus have pre-filtration, chemical treatment (coagulation-flocculation) technological units and post-disinfection phase. Heated CIP systems used for regular cleaning of membranes with chemicals are also incorporated, while these are missing in simpler equipments. Cheaper equipments often do not contain pumps that ensure the necessary water pressure. HERON Water Treatment Units have integrated raw water and process pumps, and all other necessary pump wash-water, CIP, mains pumps are also incorporated. We offer complete treatment plants, not only a technological sub-unit. Our equipment contain integrated water container that supplies the technological water required, enables more steady operation of the water treatment plant due to its buffer capacity, and the clean water container ensures sufficient contact time also for the disinfectant. In contrast, cheaper / simpler equipments do not include water container.

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