CN101062804A

CN101062804A - Sea water desalination later purification filtering method

Info

Publication number: CN101062804A
Application number: CNA2007100217348A
Authority: CN
Inventors: 陶韬; 许庆华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2007-10-31
Anticipated expiration: 2027-04-27
Also published as: CN100488889C

Abstract

The invention discloses an after-purifying and filtering method of desalination of sea water, which comprises the following steps: importing initiative desalination sea water into natural mineral desalination of sea water purifying and filtering device; absorbing; purifying; filtering with natural mineral desalination of sea water filtering agent; getting a clear and pure mineralized water with weak base. This filtering method possesses the advantages of simple operation and cheap cost, which can be fit for purifying and filtering of desalination of sea water late time.

Description

Sea water desalination later purification filtering method

Technical field:

The present invention relates to sea water desaltination, be specifically related to a kind of sea water desalination later purification filtering method.

Background technology:

Though the tellurian water yield is very big, 97% is seawater, and fresh water only accounts for 3%, and skewness, the some places Freshwater resources very lack, and especially lack the island and the landlocked arid area of tap water for some, and fresh water has become the major issue of people, animal existence.Investigation shows that coastal and landlocked underground brackish water is China second potential water source, and this water of long-term drinking can cause people, animal osteoporosis, tooth blackspot, but serious also cause cancer.

Along with rapid development of modern science and technology, people more and more pay attention to the development and use of sea water desaltination and underground brackish water.Through constantly exploring, the method for sea water desaltination has: distillation method, subzero fractionation method, reverse osmosis method, electroosmose process, pressure are oozed method, hydrate and solvent extration etc., and what use the most extensively at present is distillation method and reverse osmosis method.

Distillation method is that the seawater heating is made it explosive evaporatoin, becomes vapor condensation the process of fresh water to be distillation method again.Desalination effect behind the single flash is bad, still contains salts substances such as a spot of sodium-chlor, Repone K, sodium sulfate and yellow soda ash in the aqueous solution after its desalination, and mouthfeel is relatively poor, need repeatedly distill, and consumes more energy.Distillation method has methods such as vertical tube distillation, multistage flash evaporation, multistage single flash, vapour compression distillation and solar distilling.Report according to pertinent data: drink distilled water for a long time, found that the small white mouse growth is slower, weight loss, osteoporosis, amyotrophy, pituitary gland and kidney glandular system function are destroyed.

Reverse osmosis method is to adopt a kind of membrane sepn desalination process, force seawater to pass through fine and closely woven film, under pressurized conditions, film only allows water pass through, and materials such as salt are refused outside film, reverse osmosis method is that molecules of salt is separated from seawater, what obtain is pure water, the original mineral substance to the human body beneficial that exists in the water has also been filtered, lack necessary mineral substance of human body and trace elements such as calcium, magnesium, iron, strontium, zinc, fluorine, iodine, selenium in the pure water, the long-term drinking pure water can reduce the absorption of beneficial element, is unfavorable for HUMAN HEALTH.

Summary of the invention:

The objective of the invention is to overcome weak point in the prior art, a kind of simple to operate, purification filtering obvious results sea water desalination later purification filtering method is provided.

Sea water desalination later purification filtering method, be that seawater after will tentatively desalinating is input in the filtration equipment for clarifying of natural mineral for seawater desalination, after the adsorption cleaning filtration by purified filtering agent for seawater desalination by using natural mineral, obtain a kind of as clear as crystal, pure tasty and refreshing weakly alkaline mineralized water.

Filtration equipment for clarifying of natural mineral for seawater desalination is made up of water inlet pipe, connecting rack, purification filtering post, upper cover plate, last attachment bolt, lower cover, lower link bolt, settling chamber, wastewater discharge pipe and rising pipe.

Seawater after the preliminary desalination is meant the aqueous solution that obtains after seawater is through methods such as distillation method, subzero fractionation method or reverse osmosis methodes.

Purified filtering agent for seawater desalination by using natural mineral is made up of attapulgite, montmorillonite, zeolite, diatomite, medical stone and sepiolite; The preparation method of purified filtering agent for seawater desalination by using natural mineral is: pulverize immersion, extruding airing, crushing and screening, roasting cooling, be packaged as finished product.

Purified filtering agent for seawater desalination by using natural mineral and filtration equipment for clarifying of natural mineral for seawater desalination be separate case application patent of invention, the purified filtering agent for seawater desalination by using natural mineral number of patent application is: 200710021108.9, and the filtration equipment for clarifying of natural mineral for seawater desalination number of patent application is: 200710021110.6.

The present invention is achieved by following technical proposals:

One, purified filtering agent for seawater desalination by using natural mineral

1, the batching of purified filtering agent for seawater desalination by using natural mineral is made up of following component: attapulgite 35～65%, montmorillonite 10～25%, zeolite 5～15%, diatomite 5～20%, medical stone 5～15% and sepiolite 2～10% by weight percentage.

2, the preparation method of purified filtering agent for seawater desalination by using natural mineral is:

(1) pulverize to soak: pulverize according to the batching of purified filtering agent for seawater desalination by using natural mineral and be mixture, particle fineness≤0.5 millimeter adds water in the mixture input fermentation vat after the pulverizing and soaked 24～72 hours.

(2) extruding airing: in the mixture input extruser after will soaking, extruding is cylindrical strip thing, and the diameter of bar is controlled at 2～6 millimeters, and the length of bar is controlled at 10～20 millimeters, be transported to cement court and carry out airing, the moisture of mixture≤15% after the airing.

(3) crushing and screening: mixture after the airing is broken for irregular particle, and sieves with vibratory screening apparatus, the compound particles fineness is controlled at 0.5～5.0 millimeter.

(4) roasting cooling: carry out roasting in the compound particles input stoving oven after will sieving, maturing temperature is controlled at 500～650 ℃, is packaged as the finished product of purified filtering agent for seawater desalination by using natural mineral after the cooling.

Two, filtration equipment for clarifying of natural mineral for seawater desalination

1, filtration equipment for clarifying of natural mineral for seawater desalination is made up of water inlet pipe, connecting rack, purification filtering post, upper cover plate, last attachment bolt, lower cover, lower link bolt, settling chamber, wastewater discharge pipe and rising pipe.

2, the purification filtering post is a cylindrical vessel, and last reservoir chamber, last stainless steel woven wire, purified filtering agent for seawater desalination by using natural mineral, filter cloth, following Stainless Steel Cloth and following reservoir chamber are arranged in the container.

3, the water inlet pipe in the filtration equipment for clarifying of natural mineral for seawater desalination is welded on the left side of purification filtering post by connecting rack, and the bottom of water inlet pipe is welded on the lower-left side of reservoir chamber under the purification filtering post; Upper cover plate is coupled to each other by last attachment bolt and purification filtering post, is used for placement and cleaning purified filtering agent for seawater desalination by using natural mineral, goes up Stainless Steel Cloth, filter cloth and following Stainless Steel Cloth; Lower cover is coupled to each other by lower link bolt and purification filtering post forms the settling chamber, and wastewater discharge pipe is welded on the bottom of settling chamber; Rising pipe is welded on the upper right side of reservoir chamber on the purification filtering post.

Three, sea water desalination later purification filtering method

With the seawater after tentatively desalinating, be input to down reservoir chamber from the water inlet pipe of filtration equipment for clarifying of natural mineral for seawater desalination, stainless steel woven wire and filter cloth enter in the purified filtering agent for seawater desalination by using natural mineral under the process, sodium in the seawater and potassium ion and purified filtering agent for seawater desalination by using natural mineral carry out ion-exchange, in the purification filtering process, sodium in the seawater and potassium ion and purified filtering agent for seawater desalination by using natural mineral carry out ion-exchange, not only can effectively reduce sodium-chlor in the seawater, Repone K, the content of salts substances such as sodium sulfate and yellow soda ash, the displacement of natural mineral matter useful in the natural mineral matter mixture is dissolved in the aqueous solution, can also adsorption filtration water in mercury, plumbous, heavy metal and objectionable impuritiess such as muriate and residues of banned pesticides such as arsenic; The aqueous solution behind the purification filtering enters reservoir chamber by last stainless steel woven wire and discharges from rising pipe, obtains a kind of as clear as crystal, pure tasty and refreshing weakly alkaline mineralized water; The trace impurity that seawater after the preliminary desalination produces in carrying out ion-exchange and adsorption filtration process because the effect of gravity sinks in the settling chamber, is discharged from wastewater discharge pipe.

Seawater after the preliminary desalination is entered in the purified filtering agent for seawater desalination by using natural mineral by the bottom of filtration equipment for clarifying of natural mineral for seawater desalination, discharges from the rising pipe of last reservoir chamber at last, helps carrying out ion-exchange and adsorption filtration objectionable impurities.

The mineralized water that uses sea water desalination later purification filtering method to produce, contain 40 several mineral materials such as calcium, phosphorus, iron, copper, iodine, manganese, magnesium, cobalt, potassium, boron, zinc, titanium, vanadium, germanium, can replenish the trace element that Human Physiology needs, consumes and the adjusting physiological function is used, be the useful composition that forms muscle, skeleton and hetero-organization thereof.

Sea water desalination later purification filtering method is simple to operate, and expense is cheap, does not have environmental pollution, compliance with environmental protection requirements.

Sea water desalination later purification filtering method is applicable to the purification filtering in sea water desaltination later stage, also is applicable to the purification filtering in the brackish water desalination later stage of the Northwest's different concns, and the Freshwater resources of sustainable use are provided.

Description of drawings:

Fig. 1 is the synoptic diagram of sea water desalination later purification filtering method.

As shown in the figure: the 1st, the seawater after the preliminary desalination, the 2nd, water inlet pipe, the 3rd, upper cover plate, the 4th, last reservoir chamber, the 5th, last attachment bolt, the 6th, the connecting rack of water inlet pipe and purification filtering post, the 7th, rising pipe, the 8th, mineralized water, the 9th, last stainless steel woven wire, the 10th, the purification filtering post, the 11st, purified filtering agent for seawater desalination by using natural mineral, the 12nd, filter cloth, the 13rd, following stainless steel woven wire, the 14th, following reservoir chamber, the 15th, lower cover, the 16th, lower link bolt, the 17th, settling chamber, the 18th, wastewater discharge pipe, the 19th, discharge of wastewater direction.

Embodiment:

Below in conjunction with embodiment, the invention will be further described:

With the seawater 1 after tentatively desalinating, be input to down reservoir chamber 14 from the water inlet pipe 2 of filtration equipment for clarifying of natural mineral for seawater desalination, stainless steel woven wire 13 and filter cloth 12 enter in the purified filtering agent for seawater desalination by using natural mineral 11 under the process, sodium in the seawater and potassium ion and purified filtering agent for seawater desalination by using natural mineral 11 carry out ion-exchange, mercury in the water, plumbous, heavy metal and objectionable impuritiess such as muriate and residues of banned pesticides such as arsenic, adsorbed by purified filtering agent for seawater desalination by using natural mineral 11 and filter, the aqueous solution behind the purification filtering enters reservoir chamber 4 by last stainless steel woven wire 9, obtains a kind of as clear as crystal from rising pipe 7 discharges, pure tasty and refreshing weakly alkaline mineralized water 8; The trace impurity that seawater 1 after the preliminary desalination produces in carrying out ion-exchange and adsorption filtration process because the effect of gravity sinks in the settling chamber 17, is discharged from wastewater discharge pipe 18, and the 19th, the discharge of wastewater direction.

Claims

1, a kind of sea water desalination later purification filtering method, it is characterized in that, sea water desalination later purification filtering method is with the seawater after tentatively desalinating, be input to down reservoir chamber from the water inlet pipe of filtration equipment for clarifying of natural mineral for seawater desalination, stainless steel woven wire and filter cloth enter in the purified filtering agent for seawater desalination by using natural mineral under the process, sodium in the seawater and potassium ion and purified filtering agent for seawater desalination by using natural mineral carry out ion-exchange, the aqueous solution behind the purification filtering enters reservoir chamber by last stainless steel woven wire and discharges from rising pipe, obtains a kind of as clear as crystal, pure tasty and refreshing weakly alkaline mineralized water; The trace impurity that seawater after the preliminary desalination produces in carrying out ion-exchange and adsorption filtration process because the effect of gravity sinks in the settling chamber, is discharged from wastewater discharge pipe.