Filtration Principle

Filtration is the process of solid and liquid separation through permeable media under the action of external driving force. According to the design principle, the filter produced by Hesheng can also be divided into positive pressure equipment, negative pressure equipment and equipment combining positive and negative pressure.

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Hesheng's Three Main Types of Filtration Equipment

HESHENG Filtration Equipment-FAQs

What are the primary applications of positive pressure equipment?

Press filter is widely used in urban sewage, textile printing and dyeing, electroplate, papermaking, leather, brewing, food processing, coal washing, petrochemical industry, chemistry, metallurgy, mineral separation, pharmacy, ceramic industry sludge dewatering and so on, also use in industry production solid-liquid separation or liquid leaching process.

Are there any safety concerns associated with using positive pressure equipment?

During installation, our engineer will training workers how to ensure the equipment pressure sealing and keep safe during commissioning and maintenance.

What industries commonly use negative pressure equipment?

At present, our negative filers have been widely used in metallurgy, mining, petrochemical, chemical, coal washing, paper making, fertilizers, food, pharmaceutical, environmental protection and other fields of solid-liquid separation, the flue gas desulfurization gypsum dehydration, tailings disposal, etc.

How does negative pressure equipment work to remove contaminants?

Use vacuum pump to reach negative pressure to separate the liquid from solids.

What are the advantages of using combined positive and negative pressure equipment?

It can get much lower cake moisture than only negative or only positive equipments. So as to help clients to reduce too much costs on cake drying process and other process.

What are the typical use cases for positive and negative pressure combined equipment?

It can be used for various industrial filtration, industrial solid waste, mine tailings, gypsum (phosphogypsum, citric acid gypsum, titanium gypsum, desulfurization gypsum), sludge, corncob, platycodon, traditional Chinese medicine slag, prolifera and other dehydration.