Abre num novo separador
Soluções inovadoras para a qualidade do ar

Notícias

Purificadores de ar comerciais num ambiente de escritório que cumprem as normas OSHA

Como pode garantir que os purificadores de ar cumprem as normas OSHA para projectos comerciais?

Navegar pelas normas OSHA para purificadores de ar comerciais implica compreender os indicadores de desempenho, os requisitos de segurança e os procedimentos de manutenção. É crucial para os gestores de instalações garantir que estes dispositivos ...
2024-11-05
Notícias
Retalhista analisa detalhes transparentes dos preços dos purificadores de ar

Porque é que a transparência de preços dos fornecedores de purificadores de ar é crucial para os retalhistas?

Os retalhistas beneficiam muito com a transparência de preços oferecida pelos fornecedores de purificadores de ar. Esta transparência ajuda a tomar decisões informadas, corresponde às expectativas dos consumidores e promove a confiança. Este artigo ...
2024-11-05
Notícias
Trabalhadores de fábricas de purificadores de ar na China e no Vietname

A China ou o Vietname são melhores para a produção de purificadores de ar?

Para determinar se a China ou o Vietname são mais estratégicos para a produção de purificadores de ar, é necessário examinar factores como as implicações em termos de custos, as infra-estruturas da cadeia de abastecimento e as normas de qualidade. A China ...
2024-11-05
Notícias
Espaço de escritório moderno com um purificador de ar hisoair montado no teto, cortinas verdes, prateleiras brancas e mobiliário minimalista.

O que é um purificador de ar com filtro HEPA?

A spacious, well-lit office with a hisoair ceiling-mounted air purifier installed for enhanced air quality. Introduction HEPA filters are a popular choice in air purification, ...
2024-11-01
Notícias
Trabalhadores a montar purificadores de ar numa fábrica moderna

Como fabricar um purificador de ar?

O fabrico de um purificador de ar envolve uma série de etapas complexas, desde a investigação e desenvolvimento (I&D) até aos testes de qualidade e à produção em massa. Como a poluição do ar e ...
2024-11-01
Notícias, Sem categoria
Filtro HEPA de alta eficiência para purificadores de ar, removendo partículas finas e alergénios do ar interior

O que é um purificador de ar com filtro HEPA?

Os filtros HEPA são uma escolha popular na purificação do ar, utilizados para capturar eficazmente as partículas transportadas pelo ar e melhorar a qualidade do ar em vários ambientes. Nos últimos anos, ...
2024-11-01
Notícias
Purificador e desumidificador de ar

Purificador de ar vs. desumidificador: Comparação e diferença

Fonte da imagem: iStockPhoto Os purificadores de ar e os desumidificadores são dois aparelhos muito populares nas casas modernas. O seu principal objetivo é garantir que o ar interior é ...
2022-10-31
Air purifier, Dehumidifier, News
Purificador de ar vs Humidificador em 2022

Air purifier vs Air humidifier: Which is better?

Fonte da imagem: Home Air Advisor Os purificadores de ar e os humidificadores são, atualmente, artigos domésticos típicos. Ambos os aparelhos têm aplicações práticas e melhoram a qualidade do ar interior. Mas ...
2022-10-31
Air purifier, Humidifier, News
Rapariga a espirrar

Melhores e piores estados para alergias nos EUA

Fonte da imagem: News Medical Todas as primaveras chegam com um ataque de espirros maciço acompanhado de olhos lacrimejantes, nariz a pingar e coçar constante. Para a maioria das pessoas, estes ...
2022-10-31
Air purifier, News
Diagrama do funcionamento do filtro de ar eletrostático

Substituição do filtro: filtro de ar eletrostático vs HEPA

Air filters like wall mounted ones such as electrostatic and HEPA types are made to combat air pollutants such as pollen, pet dander, dust, etc. ...
2022-10-31
Air purifier, News
filtro iónico pros

Purificador de ar iónico vs hepa: qual é o melhor e mais seguro

Fonte da imagem: Pinterest Fonte da imagem: Hisoair Quer se trate de um purificador de ar iónico para divisões pequenas ou de um purificador de ar HEPA para divisões grandes, os sistemas populares de purificação do ar normalmente ...
2022-10-31
Air purifier, News
Purificador de ar para 286 pés quadrados (Hisoair HA-380)

As melhores empresas de purificadores de ar do mundo

Os purificadores de ar continuam a ser essenciais nos ambientes de vida nos tempos actuais. Os vírus e as substâncias causadoras de doenças presentes no ar podem ser eliminados com o ...
2022-10-22
Air purifier, News
Contaminant Engineering•3 min read

PFAS Water Filtration Technologies Explained: Carbon, Resin & RO

Key Takeaway:

PFAS reduction depends on the specific compounds present, treatment media, contact time, water chemistry, and system design. Activated carbon, ion exchange, and Reverse Osmosis address PFAS through different mechanisms.

PFAS are a large family of persistent fluorinated compounds that can occur in drinking-water supplies. Their treatment behavior varies significantly by molecular structure, chain length, functional group, concentration, and the chemistry of the source water.

Granular Activated Carbon (GAC) removes PFAS primarily through adsorption. It is generally more effective for many longer-chain PFAS, while shorter-chain compounds tend to break through more quickly. Carbon performance depends on media properties, Empty Bed Contact Time (EBCT), competing organic matter, loading, and replacement frequency.

Ion-exchange resins use charged functional sites to capture many PFAS compounds. Properly selected anion-exchange media can provide high capacity and may perform better than conventional activated carbon for some shorter-chain PFAS, although performance still depends on water chemistry and competing ions.

Reverse Osmosis (RO) uses membrane separation rather than adsorption. Properly designed RO systems can provide broad reduction across many PFAS compounds as well as dissolved salts and other contaminants. Unlike carbon or resin, however, RO also produces a concentrate stream that must be managed.

No single technology should be selected from a PFAS label alone. System design should consider which PFAS compounds are present, their concentrations, required reduction targets, flow rate, media life, and the applicable third-party certification or validation requirements.

HisoAir Water Technical Series
Product Discovery•3 min read

How to Choose an Under-Sink Water Purifier for Modern Kitchens

Key Takeaway:

Match the treatment technology to your water quality first, then evaluate cabinet space, faucet configuration, flow rate, drain and power requirements, and filter replacement needs.

Choosing an under-sink water purifier starts with water chemistry. Carbon filtration is well suited to chlorine, taste, odor, and many organic contaminants, while Reverse Osmosis is more appropriate when dissolved salts, fluoride, nitrates, or broader dissolved contaminants need to be reduced.

For compact kitchens, tankless RO systems eliminate the conventional storage tank and can significantly reduce the space required under the sink. However, membrane capacity stated in GPD does not directly equal faucet flow. When comparing systems, check the actual dispensing flow rate, inlet-pressure requirement, recovery ratio, and whether a booster pump is required.

Installation architecture also matters. Many RO systems require a drain connection, electrical power, and either a dedicated drinking-water faucet or a compatible multi-function faucet. High-flow carbon systems can often connect directly to the existing cold-water line with a simpler installation, but pressure drop and available faucet flow should still be verified.

RO also removes much of the naturally occurring dissolved mineral content. Where taste or mineral balance is a priority, a post-RO remineralization stage can be added. Filter life should be evaluated by both rated capacity and local water quality rather than replacement time alone.

The right system is therefore not simply the smallest or highest-GPD model. It is the configuration that matches the target contaminants, available cabinet space, desired faucet setup, peak dispensing demand, and maintenance expectations.

HisoAir Water Technical Series
Water Quality•2 min read

What Does TDS Mean in Drinking Water? Measurement vs Contaminant Reality

Key Takeaway:

A TDS meter estimates the overall concentration of dissolved ionic substances from electrical conductivity. It cannot identify specific contaminants or determine whether water is chemically safe.

Total Dissolved Solids (TDS) refers to the combined concentration of dissolved substances in water. Most handheld TDS meters do not measure TDS directly. Instead, they measure electrical conductivity (EC) and convert that reading into an estimated parts-per-million (ppm) value.

This means a TDS reading can indicate how much dissolved ionic material is present, but not what that material actually is. Calcium, magnesium, sodium, nitrates, and other dissolved ions can all contribute to conductivity, yet a simple TDS meter cannot distinguish between them.

TDS meters are also not suitable for detecting trace contaminants such as PFAS, many VOCs, pesticides, pharmaceuticals, or disinfection byproducts. These substances may be present at concentrations far below the level needed to noticeably change electrical conductivity.

A low TDS reading therefore does not guarantee safe drinking water, and a higher TDS reading does not automatically indicate contamination. Water-treatment decisions should be based on laboratory testing for specific contaminants of concern rather than TDS alone.

HisoAir Water Technical Series
Technology Selection•2 min read

RO vs UF Water Filtration: Understanding Pore Sizes & Dissolved Minerals

Key Takeaway:

Ultrafiltration can reduce bacteria, turbidity, and suspended particles while retaining most naturally occurring dissolved minerals. Reverse Osmosis provides much broader reduction of dissolved salts and smaller contaminants.

Ultrafiltration (UF) typically uses hollow-fiber membranes with pore sizes in the approximate 0.01–0.1 micron range. These membranes physically retain turbidity, suspended solids, colloids, and many microorganisms while allowing dissolved minerals and salts to remain in the water.

Reverse Osmosis (RO) operates at a much finer separation level. Unlike UF, RO can substantially reduce dissolved ions such as sodium, calcium, fluoride, nitrates, and other contributors to total dissolved solids (TDS). This makes RO more suitable when dissolved-salt reduction is a primary treatment objective.

UF generally requires less system pressure and produces little or no continuous concentrate stream in many point-of-use configurations. RO typically requires greater pressure and produces a reject-water stream, but delivers broader contaminant reduction.

For water with acceptable TDS and mineral content, UF can be a simpler mineral-retaining treatment option. Where dissolved salts, fluoride, nitrates, or broader dissolved contaminants are a concern, RO is generally the more appropriate technology.

HisoAir Water Technical Series
Technology Selection•4 min read

Carbon Block vs Reverse Osmosis: Which Fits Your Need?

Key Takeaway:

Choose RO for dissolved inorganic salts and heavy metals; choose Carbon Block for chemical taste/odor, no wastewater, and high line-pressure flow.

Reverse Osmosis (RO) and Carbon Block filtration represent two fundamentally different treatment methods: membrane separation and adsorption. Understanding these differences helps determine which technology is better suited to a specific water-quality requirement.

Reverse Osmosis uses a semi-permeable membrane with pore sizes of approximately 0.0001 microns. It can significantly reduce dissolved inorganic contaminants such as TDS, fluoride, nitrates, and certain heavy metals. Because water must be forced through the membrane, RO systems require sufficient pressure or a booster pump and generate a concentrated wastewater stream.

Carbon Block filtration relies primarily on adsorption through compressed activated carbon, commonly with nominal pore sizes around 0.5–5 microns. It is highly effective for chlorine, chloramines, VOCs, taste, and odor, while allowing substantially higher direct-flow rates without producing wastewater.

From an operating perspective, Carbon Block systems are generally simpler, require less energy, and avoid the water loss associated with RO. RO involves higher system complexity and operating cost, but provides substantially broader reduction of dissolved contaminants that Carbon Block alone cannot address.

HisoAir Water Technical Series

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