Alternative Soil Remediation

Alternative Soil Remediation

Purpose of soil or mud sediment remediation is to:
1. Reduce risks to humans and the environment
2. Reduce contamination of groundwater sources or surface water
3. Comply with the regulations before disposal to landfill

Alternative Soil Remediation with Soil And Materials Handling Dredging

1. Dredging
Dredging (excavation) of land can be illustrated in Figure 4.1.

Figure 4.1 Land Dredging

Dredging of soil consists of several stages:
1. Plan
Dredging plan for the waste ground waste B-3, include: drying, dredging (if saturated soil), sampling, and compliance willingness and health (OSHA).
2. Dredging steps:
- Determine the volume and the dredged area based on data available and the level of cleanup is determined
- If the soil has been contaminated by information, then the layer below should also be dredged soil surface, where government regulations requires protection if the walls are in state share to collapse, then the slope must be spliced or side must be made with a safe angle to minimize the volume clean soil to be dredged
3. For saturated soil conditions, the steps taken dredging
with the following considerations:
- Dredging of land can often exceed the lowest seasonal water level to reduce the volume. Dredging up the unsaturated soil at a section aims to reduce the residual LNAPL through fluctuations water surface, where remediation occurs at the level of seasonal groundwater the lowest
- In some cases, dredging will move further toward the aquifer to reduce the residual LNAPL
4. Regulations require sampling of the need for multiple point Dredging samples. Point samples were collected from the bottom and the wall dredging for the purposes of analysis determining the presence or absence of residual soil approaching the level of cleaning. Sampling conducted in periodeperiode the following;
- Excavation post (post-dredging)
- Confirmation sampling
- Progress
5. Other things to note are:
a. Sub-surface utility lines and pipelines are always crossing the area to be dredged in the industry or the housing. Equipment dredging to be around the track, where in some cases should be relocated to some types of equipment.
b. Dredging on the underground power lines will require ancillary equipment.
c. Soil contamination is often found to exceed the location of the building foundation. Dredging near the location of the building require deepening to prevent damage to the building.
d. Government regulations restrict the use of land dredging re-processed in order to minimize wetland damage area and in addition it will also require the permitting process more complicated.
e. Environmental disturbances, may be; noise, dust, etc..
f. Operation of the unit must have a security guarantee against health and safety of workers. Types of equipment needed will depend on: the location dredging, the dredging area and the size of the dredging volume.
B. MATERIAL HANDLING
Which has been dredged soil must be processed in advance to facilitate transport and processing. Absorbent material is added in order to reduce excess water or, can also be resized if hit on the reason limitations of processing equipment. Land to be disposed of off site must be "free liquids", in which for the purposes paint filter test was carried out on absorbent materials, such as wood, dust, etc. Comparison between the composition of the waste absorbent materials ranging from: 1 to 2.5: 1. (from any source)