What is the principle of the choice of remediation technology for soil pollution in farmland

There are three main principles for the remediation technology of soil pollution in farmland:

1.Feasibility principle
First, it is technically feasible, and if the effect of the soil remediation technology on the polluted farmland is good, it can reach the expected goal and can be implemented and popularized in a large area.
Second is economically feasible, the cost of governance can not be too high, so that the rural and farmers can afford and facilitate the promotion. We should try to adopt the technology with high maturity and operability.

2.Safety principle
Techniques such as phytoremediation, microbioremediation, and so on, should be chosen as far as possible to minimize the negative effects of soil fertility and productivity.
During the implementation process of farmland soil remediation technology, do not bring in new pollutants, do not generate secondary pollution, and will not have adverse effects on farmland soil environment, crops and surrounding environment and people’s health, and the risk is acceptable.

3.Local principles
We should not simply copy the existing technology of farmland contaminated soil treatment. We should consider comprehensively the factors such as the area of soil pollution, the type of pollution, the degree of pollution, the time to repair, the cost and the future use of the land. After scientific demonstration, a reasonable repair technology is chosen.


PARFECT soil stabilization equipment can transfer the soil binder through the air compressor to the mixing head which is mounted on the excavator, and mix with the soil to improve the strength of the foundation.

Learn more about in situ soil stabilization

评论

发表评论

此博客中的热门博文

Treatment of soft soil foundation by high pressure injection method

图片
The method is to use a drilling machine to inject a nozzle pipe into the soil layer. The slurry or water is ejected from the nozzle at high pressure to form a jet stream to destroy the soil layer. When the energy of high speed jet fluctuation was shaped, the dynamic pressure is greater than the strength of soil structure, soil particles stripping down from soil, part of the particles spread out with slurry or water, other soil particles mixed with slurry under the jet impact force, centrifugal force and gravity force, re arrange regularly according to the size of a certain percentage of soil and quality. After the slurry solidified, forming a solidified body in soil, can improve the bearing capacity of the foundation, reduce the settlement, can also improve the effecf of supporting and anti-seepage. It is suitable for foundations of silt, cohesive soil, loess, sandy soil, artificial fill and crushed stone soil. PARFECT soil stabilization equipment can transfer the soil binder t
阅读全文

What is soil remediation

图片
Contaminated soil remediation refers to physically, chemically and biologically transfer, absorb, degrade and transform pollutants in soil, which concentration can be reduced to acceptable levels, or turn toxic and harmful pollutants into harmless substances. Fundamentally, the technical principles for contaminated soil remediation may include: 1.Change the existing form or the mode of combining with the soil of pollutants in soil, reduce the mobility and bioavailability in the environment. 2.Reduce the concentration of harmful substances in the soil. The United States invested nearly $100 billion in contaminated soil restoration in 1990s. The theory and technology of contaminated soil remediation have become the frontiers of environmental science and technology research. The process of soil restoration is quite long, the need to solve the problem of soil pollution, it needs scientists of different disciplines, such as soil science, agronomy, ecology, biogeochemistry, marine scien
阅读全文

Traditional sludge disposal methods

图片
Most of the mud from the small ponds or river in the countryside is directly backfilled to farmlands nearby, which is the most common sludge disposal method used in rural areas in the past few decades. This sludge disposal method has many disadvantages: Some of the sludge has heavy metal pollution, or contains a lot of household waste and construction waste, and farmers refuse to accept it; After returning to the fields, it takes several years to dry. After airing, it needs second treatments. During this period, the fields can not be planted, and the government should pay farmers 1 ~ 2 years’ compensation fees in the form of rent. Cleaned out sludge of coastal rivers, lakes, ponds, and a considerable part of ithave been dumped at sea. In this way, the freight is expensive and tidal, and mud may be washed back inland. In Ningbo, China, the sludge being cleared will be dumped into sea which cost 176 RMB per cubic meter. The river silt in urban areas are often polluted, will usually
阅读全文