Lake pollution bottom sediment coverage ship and coverage method

Abstract

The invention discloses a lake pollution bottom sediment coverage ship and a coverage method, relating to the lake pollution bottom sediment processing technology. The coverage ship has such a structure that: a film hanging shaft (7), a covering film (15), an extending barrel (8), a leveling rod (9) and a control rod (10) are connected in order, and the covering film (15) is flatly paved on the surface of the pollution bottom sediment; a loading hopper (11), a feeding controller (4) and a conveyor belt (5) are connected in order, and a covering material (12) drops on the covering film (15); a control room (6) is electrically connected to and controls the feeding controller (4), the conveyor belt (5) and a control rod (10) respectively. According to the invention, high mechanical degree is obtained, time and labor are saved, and labor cost during the construction is reduced; good construction effects are achieved, a uniform covering layer can be realized, and utilization rate of the covering material is improved; the construction is normative, and the management of the covering construction is facilitated; the construction efficiency is increased, and the popularization and application of the covering technology is facilitated.

Description

technical field [0001] The invention relates to lake polluted bottom mud treatment technology, in particular to a lake polluted bottom mud covering ship and a covering method, in particular to equipment for adding solid large particle covering materials and a construction method. Background technique [0002] For many years, the treatment technologies for lake polluted sediments are mostly based on bottom aeration and dredging technologies. The existing practical results show that bottom aeration can only change the properties of surface sediment with a thickness of a few millimeters, and the control efficiency of endogenous release is not proportional to the investment cost. It has been found that there are problems in the mechanism. With the development of lake polluted sludge treatment technology in the future, this technology may be eliminated; and there are many problems in the application of dredging technology, such as the large area of ​​the storage yard, the high co...

AI Technical Summary

Problems solved by technology

[0004] 1. The dosing of covering materials is mostly done on shore, and the cost is high when the construction distance is long;

[0005] 2. The dosing of covering materials cannot be quantified, and is not uniform, and the covering efficiency is poor;

[0006] 3. Covering film is rarely used. The main technical problem is that it is difficult to lay film underwater, which limits the application of large-grained inert materials. At the same time, the covering material is easy to mix with polluted sediment, and the duration of the covering effect is short, which is not conducive to Long-term control of pollutant release;

[0007] 4. The application of fine particle covering materials not only slows the settlement rate and affects the water body landscape, but also has poor resistance to wind and wave disturbance, which is not conducive to the restoration of water ecosystems

[0008] In addition, when the traditional fine particle covering material is added, it is easy to cause floating dust, which is not good for the physical and mental health of construction workers.

Therefore, large-scale lake polluted sediment covering technology has not been widely promoted in the process of lake ecological restoration.

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