Construction method of cascade concentrated seawater discharge-to-sea diffusion device

Abstract

The invention discloses a construction method of a cascade concentrated seawater discharge-to-sea diffusion device. The construction method includes the steps of pretrenching, pipe laying, backfill and demand-based expansion. Discharge expansion can be performed according to discharge amount of concentrated seawater. Prearranged balance pipe fittings can effectively prevent pipeline glide in the prior art. As sludge is adopted, cost can be lowered, construction is facilitated, actual using effect can meet engineering demands, and the method can be used as a preferred compromise scheme. Bottom seawater neglected in the prior art can participate in dilution mixing by cascade mixing pipes added on demand, regions utilizing natural seawater are more dispersed by extending diffusion branch pipes, and ambient pressure is reduced greatly. Therefore, the construction method has the advantages that good level of pre-setting works is achieved, landslides are prevented, and expansion emergency capacity is high.

Description

technical field [0001] The invention relates to a construction method of a concentrated seawater discharge and diffusion device, in particular to a construction method of a cascaded concentrated seawater discharge and diffusion device. Background technique [0002] At present, my country has built 1,000-ton and 10,000-ton demonstration projects with independent intellectual property rights. Many 10,000-ton and 100,000-ton seawater utilization projects in Tianjin, Zhejiang, Hebei, Qingdao, and Dalian have been put into operation one after another. However, my country's seawater desalination industry is currently in the initial stage of vigorous development, accounting for a small proportion of my country's freshwater consumption, but the development is strong and the prospect is good. It is estimated that by 2015, my country's seawater desalination capacity will reach 2.2 million to 2.6 million cubic meters per day in general, and the contribution rate to the newly added fre...

AI Technical Summary

Problems solved by technology

Although the structure of the device is simple and easy to install, its control over the density of pebbles and the energy consumption of sea discharge still need to be improved

At the same time, the known technology has insufficient consideration for the degree of project reservation, and it is difficult to meet the sea discharge requirements of later project development

It is usually compensated by replacing old equipment with new equipment, which significantly increases the operating cost of the device and the cost of equipment renewal

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