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Laboratory extraction tank

Laboratory extraction tank

Laboratory extraction tank

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PP material

PP material

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Acrylic material

Acrylic material

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Ion exchange column

Ion exchange column

The ion-exchange method is a water purification technique that primarily relies on the exchange of ions between ions in an ion-exchange resin and certain ions present in the raw water, thereby removing these ions and purifying the water. It has been widely applied in industries such as chemical engineering, electronics, pharmaceuticals, textiles, and electroplating for purposes including the production of ultrapure water, softening hard water, decolorizing and extracting pharmaceuticals and food products, recovering important chemical raw materials, and treating wastewater.

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PVC material

PVC material

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Ion exchange column

Ion exchange column

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Metallurgical industry solutions

Wet metallurgy refers to the process and technology of extracting metals or metal compounds from valuable metal elements such as ores, waste alloy materials, or waste batteries, and using processing techniques to produce metal materials with specific properties.

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Chemical Industry Solutions

Chemical production has extremely high requirements for equipment corrosion resistance, temperature resistance, and safety. We provide customized anti-corrosion equipment for the entire process from reaction, storage to exhaust gas treatment.

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Electronic Industry Solutions

The electronics industry has extremely strict control over the cleanliness of production environments and specific pollutants in the air, such as acidic and alkaline gases and VOCs.

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Solution for Electroplating Industry

Electroplating production faces multiple challenges such as heavy metal containing wastewater, strong acid and alkali waste gas, and chemical corrosion. We provide comprehensive solutions covering production lines and end of pipe treatment.

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Solutions for the pharmaceutical industry

Pharmaceutical production must meet GMP cleanliness requirements and have extremely high standards for pollution prevention, corrosion resistance, and equipment surface smoothness during the reaction process.

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Energy Industry Solutions

The energy industry, such as the production of thermal power and new energy battery materials, faces challenges such as coal-fired flue gas purification, process wastewater treatment, and storage of highly corrosive media. We provide corrosion-resistant and aging resistant non-metallic equipment to ensure the long-term stable operation of environmental protection facilities.

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Rare Earth Industry Solutions

The separation process of rare earth hydrometallurgy involves harsh environmental conditions, involving strong acids, strong bases, strong oxidants, and radioactive substances, which require extremely high corrosion resistance and ion exchange performance of the equipment. We provide full process anti-corrosion equipment for rare earth extraction, separation, and purification.

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Environmental Industry Solutions

Environmental engineering often deals with complex and highly corrosive industrial wastewater and exhaust gases. As an equipment supplier, we provide core corrosion-resistant unit equipment for various end of pipe treatment and resource utilization projects.

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Mining Industry Solutions

The environment of mineral processing, wet metallurgy, and acid mine wastewater (AMD) treatment in mining is highly corrosive. We provide reliable anti-corrosion protection for processes such as slurry transportation, pharmaceutical preparation, and wastewater treatment.

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Solutions for the automotive manufacturing industry

The painting (electrophoresis, spray painting), electroplating, and battery production processes in automobile manufacturing generate a large amount of wastewater and VOCs waste gas containing heavy metals and organic solvents. We provide anti-corrosion and environmentally friendly treatment equipment that meets stringent process requirements.

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Research Laboratory Solution

Research institutions and enterprise R&D centers often involve small-scale, multi batch, and highly corrosive experiments when exploring new materials and processes. We provide safe, flexible, and durable laboratory grade non-metallic equipment.

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Metallurgical industry solutions

Chemical Industry Solutions

Electronic Industry Solutions

Solution for Electroplating Industry

Solutions for the pharmaceutical industry

Energy Industry Solutions

Rare Earth Industry Solutions

Environmental Industry Solutions

Mining Industry Solutions

Solutions for the automotive manufacturing industry

Research Laboratory Solution

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Customizable industry solutions

PVC buffer tank equipment has been completed.

The customer-customized PVC buffer tank has been completed.

Activated carbon tower

Activated carbon tower equipment fabrication completed.
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Step into Lehai

Hunan Lehai Environmental Protection Technology Co., Ltd.

Hunan Lehai Environmental Protection Technology Co., Ltd. (formerly known as Changsha Furong District Lehai Chemical Special Equipment Factory and Hunan Zengshi Lehai Chemical Special Environmental Protection Equipment Co., Ltd.) was established in 2009 and is located in Huanghua Town, Changsha. It is an environmental protection technology enterprise integrating design, manufacturing, installation, and service. The company has long been dedicated to the R&D and manufacture of non-metallic anti-corrosion and environmentally friendly equipment. Guided by the business philosophy of "surviving through quality and thriving through credibility," we are committed to providing customers with high-quality, low-energy-consumption environmental protection products and system solutions.
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News Center

We’re always sharing the latest news from Lehai with you.

01

2026-01

Application Case of Ammonia-Nitrogen Treatment Towers in the Electroplating Industry

Application Cases of Ammonia-Nitrogen Treatment Towers in the Electroplating Industry In the electroplating industry, environmental protection and wastewater treatment have been receiving increasing attention. Wastewater generated during electroplating processes often contains high levels of ammonia nitrogen, posing a potential threat to aquatic environments and ecosystems. Therefore, effectively treating ammonia nitrogen has become an urgent issue that the industry must address. The ammonia-nitrogen treatment tower—a newly emerging technological device—holds the key to solving this problem. What is an Ammonia-Nitrogen Treatment Tower? An ammonia-nitrogen treatment tower is a specially designed piece of equipment used to remove ammonia nitrogen from wastewater. Its working principle relies on physical and chemical reactions that convert ammonia nitrogen in the wastewater into harmless substances, thereby achieving the goal of water purification. Simply put, it acts like a “purifier” specifically designed to tackle the common ammonia-nitrogen pollution found in the electroplating industry. Why Does the Electroplating Industry Need Ammonia-Nitrogen Treatment Towers? You might ask: Why is the electroplating industry so reliant on ammonia-nitrogen treatment towers? First, the chemicals used in electroplating production—especially those employed during cleaning and plating processes—generate ammonia nitrogen. If these pollutants are discharged directly into the environment without treatment, they will inevitably cause severe contamination of nearby water bodies, degrade water quality, and even deal a devastating blow to ecosystems. Second, many countries and regions have stringent regulations regarding industrial wastewater.

12

2025-12

Environmental Equipment Industry: Market Trends for Centrifugal Fans in Hunan

The Environmental Equipment Industry: Market Trends for Centrifugal Fans in Hunan In today’s challenging environment, everyone is on the lookout for sustainable development solutions. As environmental awareness continues to rise, centrifugal fans—a critical piece of equipment—are attracting increasing attention. In Hunan, the market trends for centrifugal fans are quietly undergoing significant changes. Today, let’s take a closer look at the market prospects for centrifugal fans in Hunan and their importance within the environmental equipment industry. A Basic Overview of Centrifugal Fans in Hunan First, what exactly is a centrifugal fan? Simply put, a centrifugal fan is a mechanical device that uses a rotating impeller to push gas from a low-pressure area into a high-pressure area. It’s widely used across various industries, including ventilation, dust removal, and air conditioning. For the environmental protection sector, the role of centrifugal fans is even more indispensable, as they can effectively control industrial emissions and ensure that companies comply with environmental standards during production. Growing Market Demand In recent years, as the nation has placed greater emphasis on environmental protection policies, demand for centrifugal fans in Hunan has also been steadily rising. You might ask, “What does this have to do with me?” Actually, the applications of centrifugal fans aren’t limited to large-scale industrial settings—indeed, we encounter them in our daily lives too, such as in air conditioners and household ventilation systems. In today’s era of stringent environmental regulations,

12

2025-12

How to choose the right centrifugal fan for the Hunan region?

How to Choose the Right Centrifugal Fan for Hunan? In Hunan—a vibrant region bustling with diverse industrial and commercial activities—centrifugal fans play a crucial role as essential equipment, handling vital tasks such as ventilation and exhaust. So, how can you find the right centrifugal fan for Hunan’s unique environment amid a dazzling array of options? Today, we’ll dive into this very topic. First, let’s understand the basic principle behind centrifugal fans. Simply put, a centrifugal fan works by using a rotating impeller to draw air in and then expel it at high velocity. It’s somewhat similar to how your hand pushes water aside when you stir it—you create a force that allows the air to flow smoothly through ducts. This type of equipment is widely used in industries, agriculture, and even households. Before selecting a centrifugal fan for Hunan, the first step is to clearly define your working environment and specific needs. Are you going to use it in a high-temperature, high-humidity setting, or in a relatively dry location? It’s just like choosing a pair of shoes—you need to consider what kind of terrain you’ll be walking on. Different environments place varying demands on the equipment. For instance, in certain industries, centrifugal fans must possess features such as corrosion resistance and high-temperature tolerance. Next, let’s take a closer look at the fan’s specifications and performance parameters.