Microbes play an increasingly important role in repairing contaminated soil

In view of the current situation of soil pollution, the relevant policies of the country have also come out one after anotherIn addition to the "13th Five-Year Plan" "weight loss reduction", on May 31, the State Council also issued the "Soil Pollution Prevention and Control Action Plan", the high-profile "Earth Ten" for soil restoration set out a timetable, by 2020, the national soil pollution increase trend will be initially curbed, the overall stability of soil environmental quality, arable land and construction land soil environmental safety will be basic ally guaranteedIt also made it clear that the relevant accountability measures will be put in place by the end of 2017According to the Ministry of Environmental Protection, the relevant person in charge of the pollution of soil can be repaired to reduce its harm, thereby restoring the original functionSimply put, repair is generally divided into physical repair, chemical repair and biorepair three categoriesHowever, due to the severity and complexity of soil pollution, physical and chemical repair alone requires not only the use of a variety of technologies, and the financial and time costs that are not to be underestimatedIn addition to this, there is one of the biggest drawbacks - the incomplete removal of pollutants, leading to secondary pollution, resulting in a certain degree of environmental health risksLiu Haiming, general manager of Beijing Aerospace Hengfeng,which has been committed to soil restoration and aims to create green ecological agriculture, said: "At present, china's high cost of soil pollution control, long cycle, difficult, compared with traditional physical and chemical repair methods, with fast and efficient, high safety performance, low cost and other characteristics of biological repair will become the main role of soil pollution control." The huge natural capacity of microbial degradation of organic compounds is the basis of biorepair, so in modern bioremediation technology, microbial repair has occupied a dominant position, not only to achieve the effect of weight loss reduction, alleviate further soil pollution, but also improve crop quality and yield, known as a non-toxic effective, environmentally friendly technology" for why microbes can play such a large role, Liu Haiming told reporters: On the one hand, microbiome agents can not only reduce the highly toxic Cr6 plus to low-toxic Cr3 plus to reduce its harm, but also by changing the stability of heavy metals, to repair soil contaminated with heavy metalsIn addition, microbial agent can also use effective nutrition and energy, in the soil filter ingelet process by secreting organic acid strains to dissolve heavy metals, thereby reducing the toxicity of heavy metals, dissolving and degradation of heavy metals in the soil;"With the release of the 'Ten Dirt' and the deepening and maturity of research and application of repair technology, microbes have played an increasingly important role in the repair of contaminated soil and have received more and more extensive attentionThere is no doubt that the bio-remediation of microbial agents will also usher in explosive developmentMr Liu said