How do countries in the world handle dredging dredging sea ports?

The United Kingdom, the United States, and the Netherlands dump dredged mud at the coastal port to the submerged waste treatment yard or reuse it for land reclamation.

America

The majority of dredging projects in the US to serve the sea by ports in rivers, lakes, estuaries and coastal areas require a canal and deep parking space to accommodate commercial ships or large military vessels. About 350 million tons of mud are dredged annually in the US to maintain maritime operations. 90% of the sludge is quite clean, can serve many useful purposes or dumped into the sea in some of the allowed waste dumps.

The remaining sludge (10%) comes from highly industrialized and urbanized areas, polluted by waste from production processes and sewage. This type of sediment must be thoroughly tested by methods of determining chemicals and toxic levels. Some contaminated water areas to sediment levels must be cleaned before being discharged into safe locations.

Sludge dredging in seaports makes it easier for large vessels to enter the port.(Artwork: Maritime Journal).

Brother

About 20-40 million tons of mud are dredged from seaports in England and Wales every year. Most of the mud is dumped into the sea in 150 licensed dumps, the rest is used in favor of construction, agriculture and environmental protection.

Some seaports are considering the feasibility of using dredged mud to accrue intertidal areas (the mainland is affected by tides) or to rehabilitate mangrove swamps. Small-scale pilot projects were conducted in more than 15 locations along the southeast coast of England.

The Port of Truro in Cornwall is also studying the possibility of mixing dredged mud with waste after producing kaolin clay to create a conventional soil replacement material, used for soil improvement in polluted areas.

Netherlands

As an industrialized, densely populated country, located in the delta of many rivers on the North Coast, the Netherlands dredges about 30 million cubic meters of mud each year to maintain routes for boats and ships Drainage. 2/3 of this mud is dredged to maintain the main port of Rotterdam, one of the world's leading ports.

Most clean or only slightly contaminated dredged sludge is dumped into the sea or on land. Controlling the level of pollution of dredged sludge is a premise for sustainable dredging management strategy. The Netherlands has a policy to improve the quality of dredged mud to move this material to another place or to reuse completely.

About three-quarters of the Dutch dredging mud is pushed into the mainland by the waves, 90% of which is clean or only slightly polluted, can be dumped into the sea. However, only 30% of dredged sludge in the freshwater area can be discharged into the sea due to high pollution levels and lack of travel space.

Priority to treat dredging sludge of the Netherlands is relocation, direct reuse, treatment for profitable use and disposal. With this kind of too polluted, Dutch treats for lucrative or dumping use at dredged sludge base.