Dredged sand resource comprehensive utilization system and process

Abstract

The invention discloses a dredged sand resource comprehensive utilization system which comprises a cutter suction dredger, a pre-screen, a two-stage screening device and a hydrocyclone which are sequentially communicated with sediment at the bottoms of rivers and lakes, a fine sand opening in the bottom layer of the hydrocyclone is communicated with a dewatering screen, and an overflow mortar opening of the hydrocyclone is communicated with a rotational flow tank; a bottom sediment opening of the rotational flow tank is communicated with the belt filter press through a first static mixer, anda filter aid used for enabling dehydrated dried soil to be soft, breathable and high in biological activity is added into a first static mixer; the pre-screen is communicated with the two-stage screener through a mud conveying pipe, and a conditioner used for promoting rapid separation of mud and water is added into a mud conveying pipe. According to the dredged sand resource comprehensive utilization system adopting the structure, multistage resource utilization is achieved through multistage screening and physical dehydration, the sludge treatment efficiency is high, sludge does not fall tothe ground in the operation process, a storage yard is not needed, secondary pollution is avoided, and therefore resource treatment utilization and ecological management of dredged sand are achieved.

Description

technical field [0001] The invention relates to a dredging sand resource processing technology, in particular to a dredging sand resource comprehensive utilization system and process. Background technique [0002] In recent years, the problem of water siltation has become more and more serious. In various water bodies such as rivers and lakes, lakes, canals, reservoirs, waterways, and harbors, silt is silted and mixed with debris such as branches, bricks, plastic bags, etc., resulting in slow or stagnant water flow and affecting the normal flow of the river. The flood discharge capacity and the smooth flow of inland waterways. As the country vigorously promotes the prevention and control of water pollution and fully implements the requirements of the "Ten Measures for Water", it has continuously increased the environmental governance of key river basins, strived to improve the quality of the water environment, and carried out river (lake, reservoir) renovation actions nation...

AI Technical Summary

Problems solved by technology

However, there is no classification and screening treatment for the bottom sediment of the river reservoir, and the potential value of the dredged sand cannot be fully utilized, and the energy consumption is large

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