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Ecological desilting system and method

An ecological and dredging vessel technology, applied in the direction of chemical instruments and methods, special treatment targets, water/sludge/sewage treatment, etc., can solve problems such as inability to respond, failure to achieve, etc., to improve filter press efficiency, The effect of increasing the processing capacity and meeting the requirements of the construction period

Pending Publication Date: 2020-02-28
LIAOCHENG YELLOW RIVER ENG BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after testing, it failed to achieve the desired effect, because the concentration of the flocculant has an optimal range, and a higher concentration cannot achieve a more fully reacting effect.

Method used

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  • Ecological desilting system and method
  • Ecological desilting system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] see figure 1 , an ecological dredging system, which includes a dredging ship 2 for sucking sludge inside a river channel 1, and the sludge outlet of the dredging ship 2 is connected to a grid 4 for dry-wet separation through a sludge conveying pipeline 3 , the leakage port of the grid 4 is connected with the primary sedimentation tank 6, the primary sedimentation tank 6 is connected with the secondary sedimentation tank 7, the sewage outlet of the primary sedimentation tank 6 and the secondary sedimentation tank 7 A plurality of concentration tanks 11 for sewage concentration are communicated respectively, and the bottom sewage outlet of the concentration tank 11 is connected with a filter press 12, and the dry mud outlet of the filter press 12 is connected with a belt conveyor 14, The filter press water outlet is connected to the secondary settling tank 7 through a pipeline, and the feeding end of the belt conveyor 14 is connected to a garbage dump 16 through a transpo...

Embodiment 2

[0051] In this embodiment, an actual engineering project of a certain river course is taken as an example for illustration.

[0052] 1. Project overview

[0053] The company won the bid for the fifth construction section of the ecological dredging project of the Xiaoqing River Jinan City Section (0+000~30+472).

[0054] For a long time, the Xiaoqing River, as the mother river of Jinan, has been polluted by industrial and domestic sewage discharged from surrounding industrial and residential areas for a long time, resulting in the accumulation of silt at the bottom, which seriously affects the surrounding environment. It cannot be drained during the rainy season, endangering the health of residents on both sides of the river. In order to effectively improve the ecological environment of the river waters, restore its ecological functions and improve the flood discharge capacity, it is urgent to carry out comprehensive treatment of the river. This dredging is a measure for the im...

Embodiment 3

[0088] The method for carrying out river channel cleaning by the ecological dredging system comprises the following steps:

[0089] Step1: The dredging ship 2 is equipped with a sewage suction winch, and the sludge at the bottom of the river channel 1 is transported to the solid-liquid separation grid 4 through the sludge conveying pipeline 3 for preliminary separation, and then the large sandstone and garbage in the sludge are initially separated Separation; wherein in the conveying process, the flocculant is added to the inside of the sludge conveying pipeline 3 through the first dosing box 9 for preliminary flocculation;

[0090] Step2: The solid waste separated by the grid 4 will be transported to the gravel waste sorting machine 5 for sorting, and then transported to the waste dump 16 by the transport vehicle 15; and the separated sludge will be transported To the primary sedimentation tank 6 for precipitation;

[0091] Step3: The primary sedimentation tank 6 is connected ...

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Abstract

The invention provides an ecological desilting system and a method. The ecological desilting system comprises a desilting ship used for sucking silt in a river channel; a silt discharge port of the desiltingship is connected with a grid for dry-wet separation through a silt conveying pipeline; a liquid leakage opening of the grid is communicated with a primary sedimentation tank; the primary sedimentation tank is connected with a secondary sedimentation tank; sewage outlets of the primary sedimentation tank and the secondary sedimentation tank are respectively communicated with a plurality ofconcentration tanks for sewage concentration; a drain outlet in the bottom of each concentration tank is connected with a filter press, a dry sludge discharge port of the filter press is connected with a belt conveyor, a filter pressing water outlet of the filter press is connected with the secondary sedimentation tank through a pipeline, and a discharge end of the belt conveyor is in butt joint with a garbage stacking field through transport carts. According to the ecological desilting system, without additionally increasing the engineering cost, the silt treatment efficiency is improved by improving the silt treatment process, so that the requirement on the construction period is met, and the engineering cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of river channel silt treatment engineering, in particular to an ecological dredging system and method. Background technique [0002] When the company undertakes the dredging reconstruction process of a certain river channel, the treatment process adopted is mainly through the initial sedimentation, and then directly uses the filter press to filter the treatment process. Using the above-mentioned process, in the actual operation process, The filter press cannot achieve the expected working efficiency, and thus cannot reach the predetermined processing capacity, and cannot meet the requirements of the construction period. The main reason is that when the water content of the front-end sludge treated by this type of filter press is controlled at 80-85%, the production efficiency is high. According to the test of the moisture meter, in the actual trial production, the water content of the sludge is 95%-98%. Left and rig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F11/122C02F11/121C02F11/00E02F3/88E02F3/94E02F5/28E02F7/10
CPCC02F11/14C02F11/121C02F11/00C02F11/122E02F5/28E02F3/885E02F3/94E02F7/10C02F2303/06
Inventor 李遵良杨德生宋策肖芳赵素云刘进关
Owner LIAOCHENG YELLOW RIVER ENG BUREAU
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