A solidification and sand filtration integrated device for treating lake sediment and its treatment method

Abstract

The invention discloses a lake sediment treatment device integrating solidification and sand filtration. The device is composed of a dredge plough, a first mud pumping device, a sediment pond, a flocculating agent pond, a first muddy water conveying device, a first sand filter, a second sand filter, a muddy water filtering pond, a clean water drainage pipe, a second muddy water conveying device, a third muddy water conveying device, a mud and water separating device, a mud storage pond, a second mud pumping device, a solidified material storage pond, a spiral stirring device, a belt conveyor, a mud conveying boat, a floating platform and a control system. The first mud pumping device pumps sediment into the sediment pond, meanwhile, a flocculating agent is added into the sediment pond, some mixed muddy water enters the sand filter to be filtered, filtered clean water is directly drained into a lake, the other muddy water enters the mud and water separating device to be separated, a curing agent is added into the separated sediment, and the treated sediment is conveyed onto the mud conveying boat. The lake sediment treatment device integrating solidification and sand filtration is novel and reasonable in structure, facilitates sediment treatment and is wide in application range.

Description

technical field [0001] The invention belongs to the field of lake ecological management devices, and in particular relates to a device for treating lake bottom mud integrated with solidification and sand filtration. Background technique [0002] Everyone in the inland lake treatment industry knows that the silt in shallow lakes needs to be collected and treated regularly, otherwise, with the increase of silt, not only the water storage capacity of the lake will be reduced, but also the water quality of the lake will be reduced. At present, there are two main methods of sludge treatment in shallow lakes. One method is to use grab buckets to grab the sludge at the bottom of the lake onto the mud ship, and then transport the mud to the shore by the mud ship. The subsequent treatment such as stirring, mud-water separation and solidification treatment; another method is to first use a cutter-suction sludge collection device with a spiral cutting head to stir the sludge at the bot...

AI Technical Summary

Problems solved by technology

Therefore, it is not only difficult to improve the water quality of shallow lakes by using grab buckets to collect silt, but also the floating mud cannot be sucked up, and the treatment effect is not good

Sludge is collected by a twist-suction silt collection device with a spiral cutting head, which sucks the silt to the shore while stirring the silt at the bottom of the lake. Due to the unevenness of the lake bottom, it is inevitable during the process of stirring and sucking the silt at the bottom of the lake. The ground will disturb the bottom of the lake, and the floating mud on the upper layer of the silt will drift to other places. Therefore, it is also difficult to remove the floating mud at the bottom of the lake to the greatest extent with the latter method, and the treatment efficiency is not high.

On the other hand, since the above two methods all need to transport the collected silt to the silt yard on the shore for treatment by means of a silt ship or a pipeline, they cannot be processed on-site, and transportation tools or pipelines for transporting the silt are required. make the management cost higher

In addition, due to the need to set up a silt storage yard on the shore, it not only occupies cultivated land, but also causes secondary pollution to the environment

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