Pile of pungent polluted soil beside a village in Pinggu

■ “Pile pungent contaminated soil next to a village in Pinggu”

From now on, nearly 30,000 cubic meters of contaminated mound piles next to Dawangwu Village, Gaogao Town, Pinggu County, will be transported and sent to a professional qualified hazardous waste disposal center in Beijing for disposal. Yesterday, the Beijing Municipal Environmental Protection Bureau stated that the construction project has no problems in procedures and procedures, and the next step will be to strengthen the review and supervision of the plan.

Villagers oppose Pinggu to stop transporting contaminated soil

Villagers said that in the past two months, contaminated soil has been continuously transported by contaminated soil to the waste yard near Dawangwu Village in Donggao Township, Pinggu County, forming a mound about 10 meters high and about the size of a football field. It also emits a pungent odor. The villagers worry that the smell is harmful to the human body, and they are afraid of causing pollution to the groundwater.

According to reports, contaminated soil was transported from a chemical plant in Pinggu District. The company mainly produces food additives, produces volatile pollutants during the production process, and pollutes the soil and groundwater at the site.

Due to the opposition of the villagers, the Pinggu District government decided, after research, to stop contaminated soil from being transported next to Dawangwu Village, and the land that had been transported would be transported away.

Yesterday, Wu Yajun, deputy director of the Pinggu District Environmental Protection Bureau, said that starting today, the contaminated soil piled up next to the village will be taken away and sent to a professional hazardous waste disposal center in Beijing.

Nearly 30,000 cubic meters of contaminated soil near the village will be transported away

In 2010, after the relocation of polluting enterprises in the chemical plant in Pinggu District, the nature of the land at the original site was changed from industrial land to residential land for development. The Pinggu District Government, as required, repaired the contaminated soil and groundwater under the block and restored about 330,000 cubic meters of soil.

Wu Yajun said that about 20,000 cubic meters of soil had been dug up and piled up in the waste compound, plus construction waste, and nearly 30,000 cubic meters of soil had been transported to the hazardous waste disposal center.

The remaining 300,000 cubic meters of soil will be disposed of. Wu Yajun said that these soils will not move at present and the specific disposal plan will be re-enacted and submitted to the Municipal Environmental Protection Agency for approval.

â–  Asking

Is the approved program clearly listed?

Municipal Environmental Protection Bureau approved "plan feasible"

Prior to this, Wu Yajun, deputy director of the Pinggu District Environmental Protection Bureau, said that before the construction project was actually approved, and the approval document clearly pointed out the abandoned compound next to Dawangwu Village.

Yesterday, Xu Yifan, deputy director of the Beijing Municipal Environmental Protection Bureau's Pollution Prevention and Control Department, explained that the documents approved by the Municipal Environmental Protection Bureau for the project were the environmental assessment report of the contaminated site, the technical plan for contaminated soil remediation, and the implementation plan for contaminated soil remediation.

She said that the address is indeed in the implementation of the program, and the municipal environmental protection bureau's approval is "the program is feasible," but requires the adoption of measures, including "the occurrence of nuisance or found excessive pollutant discharge, should immediately stop the construction, and take pollution prevention and control Measures" and "The Pinggu District Environmental Protection Bureau has mandated supervision." In other words, the details of the restoration site, for example, will not be displayed in the text of the Municipal Environmental Protection Agency's approval. “We agree in principle with the plan and request that measures be taken.” The project is procedurally fine.

Does the soil need to be EIA?

This is a temporary storage point without EIA

Prior to this, Wu Yajun said that contaminated soil cannot be placed next to scenic areas, ski resorts, etc. For such a large area of ​​contaminated soil restoration, the only place that satisfies the conditions is the abandoned compound next to Dawangwu Village and has been verified by experts.

Xu Yifan stated that the implementation plan approved by the Municipal Environmental Protection Agency had hundreds of pages, and for the reasons for choosing this place, the plan stated that there was a distance from the sensitive point, a side was less affected by the road, and it had the ability to store soil.

Tang Zhenqiang, head of the Contaminated Site Management Section of the Municipal Solid Waste and Chemicals Management Center, explained that for every aspect of Pinggu’s program approval and approval, the Municipal Environmental Protection Bureau invited experts with experience in site restoration to hold an expert review meeting.

Xu Yifan said that this place belongs to a temporary storage point. Short-term rehabilitation projects do not require EIA, and the final destination of soil needs EIA.

Why is the polluted soil pile not covered in time?

The plan proposes stacking to 15 meters and then cover

A number of villagers in the village stated that about two months ago, a large number of dump trucks began to transport contaminated soil here. The village smelled of unpleasant pungent odors.

Wu Yajun said that after spending hundreds of thousands of foreign purchases of inhibitors and soil amendments to spray mounds, this can only mitigate the odor emission. Hot weather increases the rate of evaporation.

The reason why it was not timely covered, because the implementation of the program proposed that when the mound to 15 meters when the cover, "the soil a car and a vehicle shipped over, can not come to cover a car." Wu Yajun said, and later based on the views of residents, In order to reduce the volatilization of the odor, the mound was covered at 13 m.

Wu Yajun said that the project began to be excavated on the 14th of this month and was suspended on the 21st. The soil the residents had previously seen was not contaminated soil. It was for the purpose of smoothing the loess and construction waste of the abandoned compound.

In addition, the supervision company on the construction site will send an on-site supervision and supervision weekly report to the environmental protection department. “These all have acceptance basis.” Wu Yajun said.

â–  Focus

Beijing Research Contaminated Site Management Approach

On April 28, 2004, a worker poisoning incident occurred in the construction of the Songjiazhuang subway station in Beijing. The incident marked the beginning of the country’s emphasis on the restoration and redevelopment of industrial contaminated sites. It is also from 2004 that Beijing has initially established a management mechanism for redevelopment and utilization of industrial sites by issuing standard documents and compiling local standards.

Earlier this year, the Ministry of Environmental Protection issued five new standards for soil remediation. However, there is no special legislation for soil pollution in China. The relevant provisions on site pollution and soil remediation are scattered in various laws and regulatory documents. Xu Yifan said that there is no superior law that results in a lack of penalties in the supervision process.

It is understood that Beijing has taken the lead in the management of contaminated sites in the country, and has issued four local standards such as the “Guidelines for Environmental Assessment of Sites”, and is currently studying methods for the management of contaminated sites in Beijing. Xu Yifan said that prior to the request for environmental assessment of contaminated sites prior to secondary development, this link is currently being considered for pre-positioning.

According to a data from the Municipal Environmental Protection Bureau, Beijing has conducted environmental assessments on dozens of sites involving steel, coking, chemical, and electroplating industries, of which about 25% are to be repaired.

Peng Yingdeng, an environmental assessment expert, said, “An expert group has estimated that the cost of soil remediation far exceeds the cost of controlling haze, and it also exceeds the cost of water pollution treatment.”

He explained that the scope of soil pollution is relatively wide, and its repair is not like the management of haze can be controlled by desulfurization or other end, or change the energy structure and other front-end treatment methods. In addition, soil pollution remediation technology is complex and requires high levels of harmlessness.

â–  Background

Contaminated soil can be burned and detoxified

Through public reports, over the years, there have been no typical cases in Beijing for remediation of contaminated soils. Most of them have been repaired ectopically, and the "detoxification" of incineration has mainly taken place.

It is understood that the ectopic repair is to dig up the contaminated soil and transport it to a professional disposal site for processing.

Therefore, it is necessary to ensure that no contaminated soil is scattered during the transportation. Every project has engineering supervision and environmental supervision, and it can monitor every aspect of the project at any time. In the process of delivery, the "Five-joint-one-single-one" system is implemented. In addition to the documents on site, the supervisor, the motorist, the driver, and the construction personnel must sign it. The content includes more than ten items such as the vehicle number, soil type, transporter, and transportation distance.

Every aspect of soil excavation and transportation is reviewed by experts, including the route of the soil to the treatment site.

In general, contaminated soil will be transported to hazardous waste disposal sites and burned in a hazardous waste cement kiln. Harmful chemical substances are completely decomposed into harmless gases at a temperature of up to 1,000 degrees Celsius. The environmental protection department conducts 24-hour on-line monitoring of the external exhaust body with professional environmental protection test instruments to ensure that no secondary pollution occurs. The remaining solids are harmless and can be reused as a cement additive.

For different contaminated soils, the methods of restoration are not the same, not all of them are “burned”. For some less polluted soils, isolation landfills can be used. After the impervious barriers are placed around the bottom of the landfill, the soil is put into it, and the top of the landfill is blocked after the landfill to prevent rainwater seepage. Over time, the contaminated soil will degrade naturally and will not cause any damage to the surrounding environment. Pollution.

This article is a reprint of online media. It only represents the author's point of view. It has nothing to do with this site. If news articles and comments infringe your legal rights, please call us and we will handle it in a timely manner.