The most famous brownfield (also known as poison land) incident in the United States is the Love Canal Community case.

In the late 1970s, families living in this community experienced miscarriages, stillbirths, neonatal malformations and defects, and various tumors developed in adults.

After investigation, it was concluded that the community was once a large landfill filled with chemical waste. Without land restoration, the land was sold to the local education department, and schools and residential complexes were built on the land.

This incident also promoted the introduction of the Superfund Act, the U.S. brownfield legislation.

On April 28, 2004, at the Songjiazhuang subway construction site located in the South Third Ring Road of Beijing, three workers were poisoned while working underground and were sent to the hospital. The one with the most severe symptoms received treatment in a hyperbaric oxygen chamber.

The accident occurred at the original site of a pesticide factory. In the late 1970s and early 1980s, the factory was merged with the Beijing Red Lion Paint Factory.

In February 2006, a real estate project in Wuhan started construction. When working on pile foundations, workers were exposed to deep soil and were poisoned, causing vomiting and dizziness.

An investigation concluded that the land was contaminated with pesticide chemicals and that construction must stop immediately.

This place originally belonged to the Wuhan Pesticide Factory, which has been producing and operating here for decades, and major chemical leakage accidents have occurred.

In 2003, the pesticide factory moved out after completing its restructuring. In 2005, the Wuhan Land Reserve Center completed the acquisition and storage of the land. In 2006, it was acquired by Sanjiang Real Estate Company at a bidding price of 405 million.

Afterwards, Sanjiang Real Estate Company took Wuhan Land and Resources Bureau to court, and was eventually awarded 120 million yuan in compensation and took back the land.

In the Wuhan poisonous land incident, investigations by relevant departments showed that the soil contained a large amount of banned chemical components of organophosphorus and organochlorine pesticides. The biggest feature of this component is that it has strong chemical stability and can be used even if buried deeply.

It is also difficult to degrade underground.

The Wuhan Land Reserve Center believed that a major mistake at that time was that no environmental assessment and survey were conducted when acquiring and storing the land.

It was not until the developer was poisoned during construction that the country's largest "poisonous land" was withdrawn.

In July 2006, after a chemical company located in Guoxiang near Nanhuan Road in Suzhou City, Jiangsu Province, was relocated, 20 acres of contaminated land were left behind. Six road construction workers fell into a coma while digging up the toxic soil.

Founded in 1956, Su Chemical Plant was once a large-scale state-owned enterprise. It has been fully relocated to Zhangjiagang since 2003.

Since 2006, the company's headquarters began to gradually cease production. Before August 31, 2007, the company had implemented safety and safety inspections for more than 10 sets of chemical production equipment such as chlorinated benzene, acetic anhydride, imidacloprid, glyphosate, and ion membrane caustic soda that had been stopped in advance.

Environmentally friendly overall demolition.

At the end of the year, methamidophos, phosphorus trichloride and other devices were also successfully dismantled.

Although the workshops and warehouses of the Su Chemical Plant have been moved, the soil in these areas is most likely to contain toxic and harmful chemical substances such as methamidophos and chlorinated benzene. The remaining chemical substances will not only pollute the shallow soil

, and may also have an impact on deep soil and even groundwater.

On May 27, 2011, a soil restoration and treatment project in the area of ??the former Wuhan Pesticide Factory was underway in Heshan, Hanyang, Wuhan.

Next to this "poisonous land", a new residential area has been built.