CN201161942Y

CN201161942Y - Low-power consumption sea water desalting apparatus

Info

Publication number: CN201161942Y
Application number: CNU2008200762931U
Authority: CN
Inventors: 李福进
Original assignee: Hebei University of Science and Technology
Current assignee: Hebei University of Science and Technology; Hebei Polytechnic University
Priority date: 2008-02-04
Filing date: 2008-02-04
Publication date: 2008-12-10
Anticipated expiration: 2018-02-04

Abstract

The utility model relates to a low power consumption seawater desalinating device, which is used to solve the problem that the reverse osmosis process has high power consumption and cost in processing the seawater through desalinating. The low power consumption seawater desalinating device is characterized by comprising a suction pump, a water pumping pipeline, a water discharge pipeline and a purifying container which is located in deep seawater, wherein the top surface and the bottom surface of the purifying container are sealed by a steel plate, a purifying layer is arranged on the side wall of the container, the purifying layer comprises a coarse filtering layer, a fine filtering screen, a reverse osmosis layer and an ionic membrane layer from the outside to the inside, wherein the water pumping pipeline and the water discharge pipeline are respectively communicated with the water inlet and the water discharge port of the suction pump, and the end portion of the water pumping pipeline is explored into the purifying container. The low power consumption seawater desalinating device spurns a traditional method which takes a high pressure pump as the reverse osmosis power with high power consumption and takes the deep seawater as power to realize the reverse osmosis principle. The device filters non-polluted deep seawater through the coarse filtering layer, the fine filtering screen, and two layers of reverse osmosis film and ionic membrane and then pumps the purified fresh water onto the ground through the suction pump to be used. The seawater desalinating process of the utility model has simple technique, low investment and operation cost, and easy construction and extension.

Description

A kind of reduce power consumption sea water desalinating plant

Technical field

The utility model relates to a kind of water treatment device, particularly utilizes deep sea hydraulic to realize the device of sea water desaltination, belongs to water-treatment technology field.

Background technology

Along with the continuous growth of industrial boom and population, the consumption of water is increasing, and the shortage of fresh water that the earth faced has become a great problem of the puzzlement world today.Face this problem, numerous relevant persons invest the sea water desaltination field with research emphasis.At present, the method for sea water desaltination mainly contains following four kinds: 1. distillation method: make water vapor by heating, be condensed into liquid again; 2. ion exchange method: utilize the chemical replacement principle to isolate fresh water; 3. electroosmose process: this method is to utilize novel ion-exchange membrane that seawater is divided into fresh water and condensed water, and this method not only can desalinize seawater, and also can be used as the means of water conditioning, can be used for the concentrating of industries such as chemical industry, medicine, food, Separation ﹠ Purification; 4. reverse osmosis method: this method is that seawater is applied an external pressure of pressing greater than penetration of sea water, makes pure water reverse osmosis in the seawater in fresh water.In above-mentioned four kinds of methods, reverse osmosis method is paid close attention to and is studied.With regard to prior art, the present reverse osmosis method of implementing, though method is simple, it is big to expend the energy, cost is higher, only is applicable to the extraction of a small amount of fresh water.

Summary of the invention

The utility model is used to overcome the defective of prior art and provides a kind of deep sea hydraulic that utilizes to realize the reduce power consumption sea water desalinating plant that reverse osmosis method carries out sea water desaltination.

The alleged problem of the utility model is that following technical scheme solves:

A kind of reduce power consumption sea water desalinating plant, its special feature is: comprise lift pump in the formation, the pipeline that draws water, discharge pipe line and be arranged in the purifying vessel of deep-sea water, the end face and the bottom surface of described purifying vessel are sealed by steel plate, container side wall is a purifying layer, described purifying layer is followed successively by coarse filtration layer, smart filtering net, reverse osmosis layer and ion rete from outside to inside, described draw water pipeline and discharge pipe line are communicated with the water-in and the water port of lift pump respectively, and drinking-water pipe terminal portion probes in the purifying vessel.

Above-mentioned reduce power consumption sea water desalinating plant, described coarse filtration layer are first filtering net, scale inhibition layer and secondary filtration net from outside to inside, and wherein the scale inhibition layer is gone into to filter sandstone and constituted by open-work is packed; Described reverse osmosis layer is made up of two-layer reverse osmosis membrane and reverse osmosis membrane skeleton, and reverse osmosis membrane is coated on the reverse osmosis skeleton; Described ion rete is made up of two-layer ionic membrane and ionic membrane skeleton, and described ionic membrane is coated on ionic membrane skeleton both sides respectively.

Above-mentioned reduce power consumption sea water desalinating plant, set up the pressure-controlling part, described control section is made up of controller, pressure detector and waterflood pump, described waterflood pump water port is by the pipeline connection purifying vessel, the waterflood pump water-in is communicated with the discharge pipe line of lift pump, described controller is positioned at the waterflood pump water inlet, shown in pressure detector be positioned at encloses container, the pressure detector signal transfers to controller.

The utility model carries out sea water desaltination processing power consumption at existing reverse osmosis method and the high problem of cost has designed a kind of sea water desalinating plant in deep-sea place's work, it is the traditional method of reverse osmosis power that this device is abandoned the big high-pressure pump of power consumption, is that power is realized reverse-osmosis treated with the deep sea hydraulic.This device pumps into free of contamination deep sea water ground through fresh water pump with the desalination fresh water in the encloses container again and uses after coarse filtration layer, secondary filter layer, two-layer reverse osmosis membrane and ionic membrane filter.The utility model is directly finished sea water desaltination marine, the resource and a lot of middle-chain of transporting seawater on land and being consumed have been removed from, be equivalent in the deep-sea, be provided with a bite fresh water well, its desalting process technology is simple, compare with existing desalination by reverse osmosis process seawater technology and can save a large amount of energy consumptions, investment and running cost are few, easy to implement to promote.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is Figure 1A portion partial enlarged view.

The label of each parts is expressed as follows in the accompanying drawing: 1. purifying vessel; 2. coarse filtration layer; 2-1. first filtering net; 2-2. scale inhibition layer; 2-3. secondary filtration net; 3. smart filtering net; 4. reverse osmosis layer; 4-1. reverse osmosis membrane; 4-2. reverse osmosis membrane skeleton; 5. ion rete; 5-1. ionic membrane; 5-2. ionic membrane skeleton; 6. purifying vessel end face; 7. pipeline draws water; 8. lift pump; 9. discharge pipe line; 10. controller; 11. fresh water secondary-cleaned device; 12. waterflood pump; 13. pressure detector; 14. support; 15. purifying vessel bottom surface.

Embodiment

Referring to Fig. 1, Fig. 2, during constituting, the utility model comprises lift pump 8, the pipeline 7 that draws water, discharge pipe line 9 and be arranged in the purifying vessel 1 of deep-sea water, and purifying vessel is the cylinder bodily form, and its end face 6 and bottom surface 15 are by the steel plate sealing, and the bottom is provided with support 14.The purifying vessel sidewall is a purifying layer, and purifying layer is followed successively by coarse filtration layer 2, smart filtering net 3, reverse osmosis layer 4 and ion rete 5 from outside to inside.Wherein, the coarse filtration layer is first filtering net 2-1, scale inhibition layer 2-2 and secondary filtration net 2-3 from outside to inside, the scale inhibition layer is gone into to filter sandstone and is constituted by open-work is packed, and the coarse filtration layer is used for stoping planktonic attack and big stone sand to enter and through removing the dirt that is dissolved in the seawater behind the scale inhibition layer.Smart filtering net is used for the salt impurity that contains that more easily filters in the filtering seawater, and can reduce the concentration of seawater that enters the reverse osmosis layer like this, reduces the pressure difference between fresh water and its outside seawater in the purifying vessel.The reverse osmosis layer plays filtering salinity and cleaning action, the reverse osmosis layer is made up of two-layer reverse osmosis membrane 4-1 and reverse osmosis membrane skeleton 4-2, reverse osmosis membrane is coated on the reverse osmosis skeleton, and reverse osmosis membrane can be column or otherwise arranges, and the reverse osmosis membrane skeleton can improve the holding capacity of reverse osmosis membrane to hydraulic pressure.The ion rete plays salt and the further cleaning action in the further filtering water, and the ion rete is made up of two-layer ionic membrane 5-1 and ionic membrane skeleton 5-2, and ionic membrane is coated on ionic membrane skeleton both sides respectively, and the ionic membrane skeleton is used to improve the holding capacity of ionic membrane to hydraulic pressure.Draw water pipeline and discharge pipe line is communicated with the water-in and the water port of lift pump respectively, and drinking-water pipe terminal portion probes in the purifying vessel.The utility model seawater cleaning process relies on deep-water pressure to finish, deep-sea water sees through purifying layer and enters desalination and the purification of promptly having finished seawater behind the purifying vessel inside, be extracted into ground by lift pump again, after fresh water secondary-cleaned device 11 is handled, obtain the water purification that directly to quote.

Still referring to Fig. 1, the utility model is set up the pressure-controlling part, described pressure-controlling part is made up of controller 10, pressure detector 13 and waterflood pump 12, the waterflood pump water port connects purifying vessel by pipeline, the waterflood pump water-in is communicated with the discharge pipe line of lift pump, controller is positioned at the waterflood pump water inlet, and pressure detector is positioned at purifying vessel.Pressure detector transfers to controller with detected purifying vessel inside and outside differential pressure signal, controller is opened waterflood pump when pressure reduction reaches certain value, the utilization waterflood pump injects fresh water in container, keep the purifying vessel inside and outside differential pressure stable, is not damaged to guarantee ionic membrane.

Claims

1. reduce power consumption sea water desalinating plant, it is characterized in that: comprise lift pump (8), the pipeline that draws water (7), discharge pipe line (9) in the formation and be arranged in the purifying vessel (1) of deep-sea water, the end face of described purifying vessel (6) and bottom surface (15) are sealed by steel plate, container side wall is a purifying layer, described purifying layer is followed successively by coarse filtration layer (2), smart filtering net (3), reverse osmosis layer (4) and ion rete (5) from outside to inside, described draw water pipeline and discharge pipe line are communicated with the water-in and the water port of lift pump respectively, and drinking-water pipe terminal portion probes in the purifying vessel.

2. reduce power consumption sea water desalinating plant according to claim 1 is characterized in that: described coarse filtration layer is from outside to inside for first filtering net (2-1), scale inhibition layer (2-2) and secondary filtration net (2-3), and wherein the scale inhibition layer is gone into to filter sandstone and constituted by open-work is packed; Described reverse osmosis layer is made up of two-layer reverse osmosis membrane (4-1) and reverse osmosis membrane skeleton (4-2), and reverse osmosis membrane is coated on the reverse osmosis skeleton; Described ion rete is made up of two-layer ionic membrane (5-1) and ionic membrane skeleton (5-2), and described ionic membrane is coated on ionic membrane skeleton both sides respectively.

3. reduce power consumption sea water desalinating plant according to claim 1 and 2, it is characterized in that: set up the pressure-controlling part, described control section is made up of controller (10), pressure detector (13) and waterflood pump (12), described waterflood pump water port is by the pipeline connection purifying vessel, the waterflood pump water-in is communicated with the discharge pipe line of lift pump, described controller is positioned at the waterflood pump water inlet, shown in pressure detector be positioned at encloses container, the pressure detector signal transfers to controller.