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 [...]


Foundation treatment method

1.Cement soil mixing pile Cement soil mixing pile foundation using cement as curing agent, through deep mixer in the deep soft foundation, forced mixing of soft soil and curing agent (slurry or powder) in situ, a series of physical and chemical reactions by curing agent and soft soil, the condensation with integrity, good water [...]


Common equipment for soil and groundwater remediation

Investigation equipment: its main function is to sampling, to understand the type, concentration and distribution of pollutants in soil and underground water. It doesn't seem very different from an ordinary drill, but in fact, due to different requirements, the difference is still great. Many pollutants are volatile, and the key to sampling is to [...]


Swamp sludge solidification and reuse

The sludge itself contains most of the ash and a part of volatile components, and a small part of the fixed carbon. Therefore, when the moisture content of sludge is less than 60%, the heat value of the drying base can reach 833kcal/kg self-sustaining combustion. When the moisture content drops to 20%, the calorific [...]


Development direction of soil pollution remediation technology

1.Developing comprehensive soil remediation technology. The single remediation technology can not meet the current demand for contaminated soil treatment, and the future research direction should be the organic combination of various technologies. For example, the combination of plant microbial remediation, integrated oxidation reduction,, a new in situ composite repair technology combined with flushing and [...]


Development of soil remediation market in China

From the development of the industry, since 2009, the growth rate of environmental protection industry has been significantly accelerated. Affected by this, the China soil remediation industry chain has gradually entered the orderly and differentiation stage, formed from the soil pollution project risk assessment, to detect and repair project implementation, as well as the [...]


Benefits of soil stabilizer to road engineering

Soil stabilizer is a new type of energy saving and environmental protection material which is synthesized by many inorganic and organic materials. It is mixed with the soil through a series of physical and chemical reaction to change the engineering properties of soil, a large amount of free water in the soil can be [...]


Physical remediation technology of contaminated soil

Physical soil remediation refers to the removal or separation of pollutants (especially organic pollutants) from soil by various physical processes. Heat treatment technology is mainly applied in physical organic contaminated soil remediation technology of industrial enterprises, including thermal desorption, microwave heating and steam extraction technology which has been applied to the repair of benzene, [...]


What is the pile foundation treatment

When the silt layer is thicker and it is difficult to carry out the deep treatment in large area, the pile foundation treatment can be adopted to reinforce the soil. And the pile foundation treatment is various, early in the use of cement mixing pile, sand pile, while is rarely used now. First, the [...]