Pretreatment method and device for sea water desalination

Abstract

The invention discloses a pre-treating method of desalination of sea water and the device thereof. The pre-treating method pre-treats sea water by employing cooperated sterilization of ozone-ultraviolet ray, intensified coagulation and precipitation integration. The following steps are followed in order: sterilization phase, intensified coagulation phase, precipitation phase, desalination phase and mud discharging phase. The device mainly includes sterilizing and a touching apparatus in series, a medical adding and blending apparatus, a flocculating apparatus, a depositing apparatus, a water outlet groove and a mud discharging pump. The invention has the advantages that by using the method of cooperated sterilization of ozone-ultraviolet ray, intensified coagulation and precipitation integration, impact loading capacity of the anti-water quality and quantity is stronger, the operation is more stable and reliable, the disposal cost is more economical, which can be used in large scale and has good water quality of outlet water. Cooperated sterilization of ozone-ultraviolet ray can well prevent the formation of the by-product by sterilization in the water and the appearance of the microorganism in the water after sterilization, which effectively resolves the problems of large quantity of adding dosage and long reacting time existing in conventional sterilization method.

Description

technical field [0001] The invention relates to a seawater desalination method and equipment, in particular to a seawater desalination pretreatment method and equipment. Background technique [0002] At present, the equipment and technology for seawater desalination should be said to be relatively advanced and mature. For coastal areas with good water quality, after treatment by existing equipment, the indicators can meet the technical requirements. However, for the seriously polluted and deteriorating coastal areas, if the polluted water quality is not pretreated in advance and even the best desalination treatment equipment is available, it is difficult to achieve the desired results. According to technical requirements, before entering seawater desalination treatment, its seawater should meet the requirements of specific physical and chemical indicators. Therefore, the quality of seawater pretreatment process is directly related to the success or failure of seawater desal...

AI Technical Summary

Problems solved by technology

However, the prior art seawater pretreatment process has the following deficiencies: lengthy process, cumbersome operations, inconvenient management, and high operating costs.

Especially for the operation of membrane pretreatment and the quality of the membrane module itself, the requirements are very high, and the ability to resist the impact load of water quality and quantity is relatively poor.

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