Novel recycled water advanced treatment and recycling system

Abstract

The invention discloses a novel recycled water advanced treatment and recycling system which comprises a first ozone contact pond for strongly oxidizing long-chain or circular organic matters in sewage to short-chain biodegradable organic matters, a lifting pond, a biofilter for removing COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and NH3-N in water, a clean water pond, a second ozone contact pond for disinfecting and sterilizing water quality, a shutter filter, an ultrafiltration system and a reverse osmosis system for filtering and intercepting impurities such as large molecules, ions and SS (Suspended Solids) in water and a waste water collecting pond respectively connected with the ultrafiltration system and the reverse osmosis system, wherein the above parts are sequentially connected. Therefore, solid impurities, dissolved organic matters, high and low valent molecules, ions and the like in sewage are removed through the treatment process to uniform water quality. The recycled water is disinfected to improve the effluent quality which realizes the water quality standard of tap water, so that the recycled water can be used as a water source for preparing ultrapure water.

Description

technical field [0001] The invention relates to the technology in the field of sewage treatment, in particular to a novel reclaimed water advanced treatment and reuse system. Background technique [0002] my country is in the stage of rapid industrial development, the demand for water is increasing year by year, and the pollution and damage of various water sources are increasing. In response to the requirements for energy conservation and emission reduction, it is required to use various unconventional water sources such as reclaimed water, reclaimed water, brackish water, etc. to alleviate water pollution. The problem of resource scarcity. At present, there is no deep utilization of reclaimed water in China. Reclaimed water is only reused as domestic miscellaneous water after simple treatment, which is a waste of water resources. The deep reuse of such water sources has become a relatively urgent issue. subject. [0003] Ultrapure water is generally used in industries such ...

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Problems solved by technology

[0002] my country is in the stage of rapid industrial development, the demand for water is increasing year by year, and the pollution and damage of various water sources are increasing. In response to the requirements for energy conservation and emission reduction, it is required to use various unconventional water sources such as reclaimed water, reclaimed water, brackish water, etc. to alleviate water pollution. The problem of resource scarcity, there is currently no in-depth utilization of reclaimed water in China. Reclaimed water is only reused as domestic miscellaneous water after simple treatment, which is a waste of water resources. The in-depth reuse of such water sources has become a relatively urgent issue. subject

[0003] Ultrapure water is generally used in industries such as electric power, chemical industry, metallurgy, electronics, and medicine. Reverse osmosis and continuous electrodeionization technology has gradually replaced the backward ion exchange mixed bed technology as a common way to prepare ultrapure water. The pure water adopts the water source with good raw water quality as the influent water. Most of the ionic substances are removed through the reverse osmosis system. The desalination rate is usually 98%-99%, and then the continuous electrodeionization system is used for advanced treatment to achieve industrial ultra-pure. water, but its influent water quality requirements are relatively high, and ultrapure water can only be produced within a small range of water quality. The cost is high, and the treatment process is complicated, which seriously limits the application range of this technology. Use the system to improve it so that it can meet the water quality standard of tap water and can be used as a water resource for the preparation of ultrapure water

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