Chapter 3167

Guan Tongfu said, "Mayor Su, to tell you the truth, I have indeed studied a large number of plants over the years. I have a clear understanding of which plants can absorb which heavy metals. I know no less than hundreds of kinds of plants. The plants I have introduced now are basically the plants with the highest efficiency in absorbing heavy metals, and the treatment effect will be relatively good."

As long as he looked at Guan Tongfu's appearance of knowing his treasure, Su Xinghui knew that what he said would not be false. He must have put a lot of energy into such research, and he did not know how much suffering he had endured.

Su Xinghui said sincerely, "Dr. Guan, you have worked hard!"

Guan Tongfu said, "Mayor Su, don't say such things. This is my career. Being able to repair so much soil, I also have a sense of accomplishment. Besides, I am not working for nothing. Doesn't the municipal government pay me?"

Su Xinghui said, "By the way, Dr. Guan, these plants cannot be utilized anymore, right?"

Guan Tongfu said, "Yes. In fact, if these plants were not planted on land with excessive heavy metals, many of them could still be utilized. For example, Viola can be used as a vegetable, vetiver can be used to make spices, and ramie can use its plant fiber. But now these plants cannot be utilized because the heavy metals exceed the standard, and because multiple plants need to be planted together, it is not convenient to harvest them."

Su Xinghui said, "Then how should they be handled after they mature?"

Guan Tongfu said, "After they mature, they are all harvested and then burned in a special incinerator. After burning, the heavy metals they absorbed can be recycled from them. In this way, by slowly removing them, after about a decade or so, the heavy metal content in these lands will slowly return to normal."

Su Xinghui had a relatively clear understanding of the process of plant remediation of heavy metal-contaminated soil. He nodded and said, "Dr. Guan, fortunately there is you. Otherwise, we really have no other way to repair these contaminated soils."

Guan Tongfu said, "There are other methods, such as using chemical drugs, such as changing the soil. However, these methods, first, have high costs, and second, the effect is not as thorough as using plant remediation."

Su Xinghui asked again, "Dr. Guan, can those heavy metals that have penetrated deep into the strata with groundwater be removed?"

Guan Tongfu said, "Mayor Su, you asked this question well, very professional. These heavy metals can also be removed slowly, but it takes much more effort. This requires some plants with very long roots to remove. For example, some herbaceous plants have relatively developed roots, and some woody plants such as paper birch and mangroves also have very long roots, which can also remove heavy metal pollution in relatively deep soil."

As he spoke, Guan Tongfu pointed to some tree seedlings planted not far away. Those were paper birch, which is also a plant that can accumulate heavy metals. This is a perennial arbor. In his words, repairing soil heavy metal pollution requires both herbaceous and woody plants.

Herbaceous plants have a short growth cycle and can be planted two or three times a year. After they mature, they can be harvested and burned, with good removal effects and fast repair speed. Woody plants have long roots and can remove heavy metals in the deeper soil, which makes the repair more thorough.

Listening to Guan Tongfu's words, Su Xinghui walked on this land planted with plants, looking at these plants that were growing very well. His heart was full of hope. Although this process was still very long, perhaps it would take more than a decade, but there would always be a day of success.

Su Xinghui stopped and looked, and he said to Guan Tongfu, "Thank you, Dr. Guan!"

Guan Tongfu said, "Mayor Su, don't say such things. This is my career. Being able to repair so much soil, I also have a sense of accomplishment. Besides, I am not working for nothing. Doesn't the municipal government pay me?"

Su Xinghui said, "By the way, Dr. Guan, our western Xihe City also has many mines, and the situation is similar to our Baozhou City. I think your professional knowledge can also be used there. Next time I will introduce you to their vice mayor Chi Yongjun. He is also in charge of the economy. You can also help him solve this big problem."

Guan Tongfu said, "That's no problem. I studied this major to solve these problems. I can go to Xihe to see him at any time."

Many mines in Xihe City have already stopped work. After Chi Yongjun listened to Su Xinghui's suggestion, he used thunderous means to close many mines that were illegally mined and polluted the environment. Of course, he is now also facing a problem of repairing contaminated soil. Therefore, he also asked Su Xinghui.

Su Xinghui told him the name of Guan Tongfu at that time, but Tongfu Environmental Protection Technology was still under construction at that time and had not officially started operation. Su Xinghui also didn't know how the effect was. Now it seems that this repair effect should be quite good. So, it is time to introduce Guan Tongfu to meet Chi Yongjun.

Although Xihe City is poorer than Baozhou City before Su Xinghui came, in the past few months, after Chi Yongjun came, the development of Xihe City has been relatively fast.

Chi Yongjun himself has many connections. He invited some investors to invest in Xihe. Su Xinghui introduced large real estate companies such as Hongtu Real Estate and the Mi Group to Chi Yongjun to engage in urban construction in Xihe. With these real estate companies bringing capital for construction, this is a very large relief for Xihe's fiscal pressure.

In addition, Su Xinghui also introduced some Southeast Asian Chinese businessmen to invest in Xihe, giving Chi Yongjun very great support. And Xie Junqiang also decided to invest in building a logistics park at the junction of Xihe and Baozhou. This is because the southwest corner of Xihe is the junction of Yanbei and two other provinces. Xihe is the junction of three provinces. This geographical location is very superior and very suitable for logistics park construction.

Chi Yongjun also reported to the province that he wanted to build an expressway from Xihe to Baozhou. This expressway would connect with the expressway from Baozhou to Beijing, so that the geographical advantages of Xihe could be maximized.

Now, Xihe can also be considered to have some capital that can be used to repair contaminated soil. These soils must be repaired as soon as possible. If it takes a long time, the legacy will be endless.