Drinking water purification system and method utilizing forward osmosis-nanofiltration combined technology
A purification system and drinking water technology, applied in chemical instruments and methods, permeation/dialysis water/sewage treatment, general water supply conservation, etc., can solve water source pollution, limited removal of new trace organic pollutants, increase the difficulty of drinking water treatment, etc. problems, achieve low operating costs, prolong the cleaning cycle and service life, and achieve the effects of excellent effluent water quality
Inactive Publication Date: 2020-02-07
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology
Pollution of water sources increases the difficulty of drinking water treatment
At present, the traditional domestic water purification treatment technologies mainly include biological pretreatment, chemical oxidation pretreatment, activated carbon adsorption, etc. These conventional water treatment processes mainly remove traditional organic matter, and have limited removal of new trace organic pollutants.
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[0028] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.
[0029] The sewage treated in the following examples comes from the branch river water of Taihu Lake. After the water quality is filtered by filter cotton, the conductivity is 1.22-1.83ms / cm, the COD is 253-433mg / L, the pH is 6.8-7.6, and the NH 3 The mass concentration of -N is 28.43-63.22mg / L.
[0030] like figure 1 As shown, the present invention provides a drinking water purification system utilizing forward osmosis-nanofiltration combined technology, the system comprising: raw water tank 1, sewage treatment tank 3, sewage water tank 5, forward osmosis membrane sewage treatment device 13, drive fluid Water tank 7, nanofiltration membrane assembly 8, clean water tank 9 and drinking water pool 1...
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The invention discloses a drinking water purification system and method utilizing a forward osmosis-nanofiltration combined technology. The system comprises a raw water tank, a sewage treatment pool,a sewage discharge water tank, a forward osmosis film sewage treatment device, a driving liquid water tank, a nanofiltration film assembly, a purified water tank and a drinking water pool. The concentration of a saline solution in the driving liquid water tank can be controlled to be kept constant, so that a driving agent can be recycled; the nanofiltration film assembly disclosed by the inventionis used for carrying out nanofiltration work on a single solution, and a nanofiltration film with the highest desalination rate can be selected according to the driving agent, so that the nanofiltration effect is greatly improved, and the effluent quality is excellent and stable.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a drinking water purification system and method utilizing forward osmosis-nanofiltration combined technology. Background technique [0002] In recent years, with the accelerated pace of national industrialization, harmful substances in water bodies have continued to increase, and the degree of water pollution has become increasingly serious. The pollution of water sources has increased the difficulty of drinking water treatment. At present, the traditional domestic water purification treatment technologies mainly include biological pretreatment, chemical oxidation pretreatment, activated carbon adsorption, etc. These conventional water treatment processes mainly remove traditional organic matter, and have limited removal of new trace organic pollutants. Membrane technology is a high-efficiency separation, concentration, purification, and purification technology. Forward...
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IPC IPC(8): C02F1/44
CPCC02F1/442C02F1/445C02F2201/002C02F2209/42C02F2301/046C02F2303/14Y02A20/131
Inventor 周子璇耿安朝耿策储鑫
Owner SHANGHAI MARITIME UNIVERSITY