What are the common treatment methods for soft soil foundation

1.The replacement layer method. It is to remove the bad ground soil, and then backfill the soil with better compaction characteristics to compacted or tamped to form a good bearing layer. Thus, the bearing capacity of the foundation is changed and the ability to resist deformation and stability is improved. In the construction of [...]


6 kinds of treatment methods of sludge

There are 4 kinds of sludge produced in a city: construction mud, river silt, ditch mud and sewage treatment plant sludge. Compared with construction mud, the other 3 kinds of sludge are easily contaminated by two pollutants, because they contain pathogens, parasites (eggs), heavy metals and some organic pollutants which are difficult to degrade. [...]


Soil remediation industry entered a critical period

As the most potential subdivision area of environmental protection industry, the soil remediation industry has a certain dependence on the policy. For more than a year, Chinese soil remediation industry has become a hot "new darling" under the support of national policy. According to the "Chinese soil remediation industry market outlook and investment strategy [...]


Purpose of foundation treatment

The foundation treatment generally refers to the engineering measures used to improve the bearing capacity of the foundation supporting the building, improve its deformation performance or impermeability. The problems faced by the foundation are mainly in the following aspects: a.Bearing capacity and stability problems. b.The problem of compression and uneven settlement. c.Leakage. d.Liquefaction. e.Special [...]


The soil leaching remediation technology

Soil leaching means that the solid phase heavy metals in the soil can be transferred to the liquid phase by extractant. The soil containing extractant can be reused after washing with water, then the waste liquid containing heavy metals will be further processed. The key to the remediation of soil leaching is to find [...]


Bottleneck analysis of petroleum contaminated soil remediation technology

The selection and treatment effects of petroleum contaminated soil remediation technology are closely related to the composition and properties and changes of petroleum pollutants in soil, and the soil environment. In the past 30 years, foreign study on bioremediation of petroleum contaminated soils showed rising trend, from the laboratory to the in situ remediation, [...]


The most practical method for soil remediation in brownfield is stabilization

Soil pollution is an environmental health hazard of brownfield development and utilization. Most of the pollutants in the brown soil are in the state of aging, so the remediation is difficult. Brownfield remediation requires rapid method. Through the above comparison, soil stabilization treatment is the most practical method for brownfield soil remediation. Different countries [...]


Redox technology for soil remediation

Chemical oxidation reduction technology is by adding chemical oxidant (Fenton reagent, sodium persulfate, hydrogen peroxide, Potassium Permanganate, etc.) or reducing agent to the soil for remediation. The commonly used reducing agents are iron containing reducing agents (zero valent iron, nanoscale zero valent iron and ferrous reducing agents), reductive sulfides (H2S, FeSx, thiosulfate, etc.) and [...]


What is soil solidification technology

Soil solidification / stabilization technology is to fix pollutants in the polluted medium and make them in a long-term stable state. It is a widely used method for rapid control and remediation of heavy metal pollution in soil. It has obvious advantages in dealing with multiple heavy metal contaminated soil simultaneously. The key to [...]