Process for preparing drinking water through deep treatment of underground water

Abstract

The invention discloses a process for preparing drinking water through deep treatment of underground water. The process comprises an NF membrane treatment system, and the NF membrane treatment system comprises a raw water pump, a regulating reservoir, a booster pump, a pretreatment device, a high-pressure pump, a nanofiltration membrane system, a water storage device, a dosing system and an electric cabinet; the raw water pump, the regulating reservoir, the booster pump, the pretreatment device, the high-pressure pump, the nanofiltration membrane system and the water storage device are connected in sequence; the raw water pump is connected with underground water to be treated; the dosing system is connected with the nanofiltration membrane system; and the raw water pump, the booster pump, the high-pressure pump and the dosing system are electrically connected with the electric cabinet. The nanofiltration membrane system is used for deeply treating underground water in the micro-polluted saline-alkali area, trace organic matters, chroma, bacteria, viruses, heavy metals, fluorine ions, hardness and the like in water can be effectively removed, the system is simple, and the quality of produced water is good; meanwhile, the pretreated underground water can effectively slow down nanofiltration membrane pollution, the water production rate is high, operation is stable, maintenance is easy, and the operation cost is low.

Description

technical field [0001] The invention belongs to the technical field of groundwater treatment, and in particular relates to a process for preparing drinking water through advanced treatment of groundwater. Background technique [0002] With the increasingly serious problem of environmental pollution, it is difficult to guarantee the quality of drinking water sources. In some areas such as saline-alkali areas, due to geological and other reasons, the groundwater in this area is polluted to varying degrees, specifically manifested in TDS (total dissolved solids content), alkalinity , SO42-, Cl-, NO3- and other inorganic ions exceeded the standard, trace organic substances such as benzene and styrene, and heavy metals such as zinc and cadmium exceeded the standard. Therefore, groundwater must be professionally treated before it can be consumed. [0003] The water treatment technology with membrane technology as the core has attracted widespread attention and is one of the most ...

AI Technical Summary

Problems solved by technology

The system adopts a combination of traditional sand filtration, ultrafiltration and nanofiltration, which not only has a very low water production rate and recovery rate, but also has a long process flow, a large footprint and high operating costs.

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