CN106746072A - A kind of combined type treatment method for rural sewage - Google Patents
A kind of combined type treatment method for rural sewage Download PDFInfo
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- CN106746072A CN106746072A CN201611120342.2A CN201611120342A CN106746072A CN 106746072 A CN106746072 A CN 106746072A CN 201611120342 A CN201611120342 A CN 201611120342A CN 106746072 A CN106746072 A CN 106746072A
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- Prior art keywords
- filter
- water
- communicating pipe
- delivery port
- polypropylene melt
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- 239000010865 sewage Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- -1 polypropylene Polymers 0.000 claims abstract description 43
- 239000004743 Polypropylene Substances 0.000 claims abstract description 41
- 229920001155 polypropylene Polymers 0.000 claims abstract description 40
- 238000001728 nano-filtration Methods 0.000 claims abstract description 36
- 239000012528 membrane Substances 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 238000000746 purification Methods 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 33
- 239000000243 solution Substances 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 15
- 210000004379 membrane Anatomy 0.000 claims description 13
- 229910021389 graphene Inorganic materials 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000004659 sterilization and disinfection Methods 0.000 claims description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- 210000002469 basement membrane Anatomy 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 238000000108 ultra-filtration Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 3
- 229920002292 Nylon 6 Polymers 0.000 claims description 3
- 239000004695 Polyether sulfone Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000005457 ice water Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 239000002798 polar solvent Substances 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 229920006393 polyether sulfone Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims 1
- 229920002521 macromolecule Polymers 0.000 claims 1
- 238000001471 micro-filtration Methods 0.000 claims 1
- 239000003651 drinking water Substances 0.000 abstract description 3
- 235000020188 drinking water Nutrition 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/027—Nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of combined type treatment method for rural sewage, comprise the following steps：1. sewage disposal system is made；Including former pond, raw water pump, 20 micron polypropylene melt-blown filter micro-filters, active carbon filter, 5 micron polypropylene melt-blown filter accurate filters, nano-filtration membrane filter, ultraviolet sterilizer and water purifying tank, the delivery port that invention softens pond is connected with the water inlet of 20 micron polypropylene melt-blown filter micro-filters by communicating pipe, the delivery port of invention active carbon filter is connected with the water inlet of 5 micron polypropylene melt-blown filter accurate filters by communicating pipe, and 5 micron polypropylene melt-blown filter accurate filter be connected by high-pressure pump with nano-filtration membrane filter, the delivery port of invention nano-filtration membrane filter is connected with the water inlet of ultraviolet sterilizer by communicating pipe；The present invention can carry out the purification of high-quality, then using cooperatively by ultraviolet sterilizer to water so that raw water can reach the standard of drinking water, so as to reach the effect of energy-conserving and environment-protective.
Description
Technical field
The invention belongs to water cleaning systems technical field, and in particular to a kind of combined type treatment method for rural sewage.
Background technology
In the prior art, the running water that waterworks is produced is by flowing into common people family etc. as drinking water after city planting ductwork
It is public use；But, existing tap water purifying technique can only remove 20% or so to organic matter in water source etc., and municipal
Pipe network etc. conveys wetting system because outmoded grade can bring secondary pollution.
In addition, being sterilized using chlorine more than waterworks, chlorine is combined with organic matter can produce new carcinogen；It is many above
Factor causes what running water cannot reach direct drinking to drink requirement；In existing building water system, what resident needed drinks level
Water needs for each family oneself purchase configuration water purifier, and high cost, water purification quality height is different, so as to people can not be met
Use demand.
The content of the invention
It is an object of the invention to provide a kind of combined type treatment method for rural sewage, to solve above-mentioned background technology
The problem of middle proposition.
To achieve these goals, the present invention is to realize by the following technical solutions：A kind of combined type life in the countryside
Sewage water treatment method, comprises the following steps：
Make sewage disposal system；
Sewage disposal system includes former pond, softens pond, 20 micron polypropylene melt-blown filter micro-filters, active carbon filter, 5
Micron polypropylene melt-blown filter accurate filter, NF films nano-filtration membrane filter, ultraviolet sterilizer and water purifying tank,；
Former pond is connected with pond is softened by raw water pump, softens the delivery port and 20 micron polypropylene melt-blown filter micro-filters in pond
Water inlet connected by communicating pipe, and delivery port and the active carbon filter of 20 micron polypropylene melt-blown filter micro-filters
Water inlet is connected by communicating pipe,；
The water inlet of the delivery port of active carbon filter and 5 micron polypropylene melt-blown filter accurate filters is connected by communicating pipe
Connect, and 5 micron polypropylene melt-blown filter accurate filters are connected with NF film nano-filtration membrane filters by high-pressure pump, NF film NF membranes
The delivery port of filter is connected with the water inlet of ultraviolet sterilizer by communicating pipe, and ultraviolet sterilizer delivery port and water purifying tank
Connected by communicating pipe.；
The preparation method of NF membrane is comprised the following steps：
(i) is made as rectangular-shape using steel wire, and supporting layer is obtained；
(ii) covers porous carrier layer in obtained support layer surface；
(iii) covers nanofiltration film layer in porous carrier layer surface, and the preparation method of the nanofiltration film layer is comprised the following steps：
A. by mass fraction be in 0 DEG C of ice-water bath 98% the concentrated sulfuric acid added in expansible graphite raw material, be slowly added Gao Meng
Sour potassium, stirs, and is placed in water bath with thermostatic control and is heated to 45-50 DEG C, keeps 0.5-2h；
B. deionized water to reaction system bubble-free is slowly added dropwise in resulting solution in step A to produce, is heated up in water bath with thermostatic control
To 95-100 DEG C, stir 25-30 minutes, hydrogen peroxide solution to the solution that mass fraction is 25% is added after natural cooling and is changed into bright
The suspension of yellow；
C. step B gained suspensions are filtered into obtain brown color colloid, is washed to neutrality through pickling and deionized water, dried after super
Ultrasonic disperse and centrifugally operated in pure water, supernatant is placed in dries to obtain graphene oxide powder in 65-75 DEG C of drying baker；
D. gained graphene oxide powder is placed in ultrasonic disperse 1-5h in polar solvent in step C, and supernatant is removed after centrifugation, obtains
To graphene oxide solution；
E. with polymer ultrafiltration membrane as basement membrane, graphene oxide solution is filtered using basement membrane, under 0.05-0.5MPa static pressures
Constantly promoting graphene oxide solution makes solvent molecule pass through milipore filter, obtains the nanofiltration film layer of moistening；
F. the product for covering the nanofiltration film layer of moistening is placed in vacuum drying chamber and is dried, final nanofiltration film layer is obtained；
(iv) is armor coated in nanofiltration film layer outer surface, and it is the PVA aqueous solution and NF membrane of 11-15% that protective layer uses concentration
Layer reaction is placed in being dried in vacuum drying chamber, and NF membrane is obtained；
Be pumped into water in former pond in softening pond by raw water pump, and it is micro- that the water after softening pond and softening enters 20 by communicating pipe
Rice polypropylene melt blown filter micro-filter carries out filtration treatment, and the water after filtering is carried out by communicating pipe into active carbon filter
It is secondary to filter again,；
Water after secondary filter carries out filtration treatment by communicating pipe into 55 micron polypropylene melt-blown filter accurate filters
Afterwards, the water after high-pressure pump will be filtered in 55 micron polypropylene melt-blown filter accurate filters is pumped into NF films nano-filtration membrane filter to be carried out
Filtering,；
Water after filtering carries out sterilization processing into ultraviolet sterilizer, and people is supplied into water purifying tank by communicating pipe after sterilization processing
Use, that is, complete clean water treatment.
Preferably, the delivery port of former pond is connected with the water inlet of raw water pump by communicating pipe, and raw water pump delivery port
It is connected by communicating pipe with the water inlet for softening pond.
Preferably, the delivery port of 5 micron polypropylene melt-blown filter accurate filters passes through to connect with the water inlet of high-pressure pump
Pipe is connected, and the delivery port of high-pressure pump is connected with the water inlet of nano-filtration membrane filter by communicating pipe.
Preferably, it is provided with uviol lamp in ultraviolet sterilizer.
Preferably, polymer ultrafiltration membrane material be polyether sulfone, polyacrylonitrile, polypropylene, polyethylene, polycaprolactam or
Any one in poly- furan alcohol.
Beneficial effects of the present invention：The water-saving Central water purification processing system is simple and reasonable, economical and practical, user
Just, by softening pond, 20 micron polypropylene melt-blown filter micro-filters, active carbon filter, 5 micron polypropylene melt-blown filters essence
The softening and filtering of close filter and nano-filtration membrane filter, can carry out the purification of high-quality to water, then by ultraviolet sterilizer
Use cooperatively so that raw water can reach the standard of drinking water, so as to reach the effect of energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is the structural representation of the combined sewage treatment system designed by the present invention；
1- former ponds, 2- raw water pumps, 3- softenings pond, 4-20 micron polypropylene melt-blown filter micro-filters, 5- active carbon filters,
6- communicating pipes, 7-5 micron polypropylene melt-blown filter accurate filters, 8- high-pressure pumps, 9- nano-filtration membrane filters, 10- ultraviolet-sterilizations
Device, 11- water purifying tanks.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments；It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, the present invention provides a kind of technical scheme：Comprise the following steps：
Make sewage disposal system；
Sewage disposal system includes former pond 1, softens pond 3, the filtering of 20 micron polypropylene melt-blown filter micro-filters 4, activated carbon
Device 5,5 micron polypropylene melt-blown filter accurate filters 7, NF films nano-filtration membrane filter 9, ultraviolet sterilizer 10 and water purifying tank 11,；
Former pond 1 is connected with pond 3 is softened by raw water pump 2, softens the delivery port and the 20 micro- mistakes of micron polypropylene melt-blown filter in pond 3
The water inlet of filter 4 by connecting communicating pipe 6, and 20 micron polypropylene melt-blown filter micro-filters 4 delivery port and activated carbon
The water inlet of filter 5 by connecting communicating pipe 6,；
The water inlet of the delivery port of active carbon filter 5 and 5 micron polypropylene melt-blown filter accurate filters 7 passes through communicating pipe 6
Connect, and 5 micron polypropylene melt-blown filter accurate filters 7 are connected with NF films nano-filtration membrane filter 9 by high-pressure pump 8, NF films
The water inlet of the delivery port of nano-filtration membrane filter 9 and ultraviolet sterilizer 10 is by being connected communicating pipe 6, and ultraviolet sterilizer 10 goes out
The mouth of a river is with water purifying tank 11 by being connected communicating pipe 6.；
The preparation method of NF membrane is comprised the following steps：
(i) is made as rectangular-shape using steel wire, and supporting layer is obtained；
(ii) covers porous carrier layer in obtained support layer surface；
(iii) covers nanofiltration film layer in porous carrier layer surface, and the preparation method of the nanofiltration film layer is comprised the following steps：
A. by mass fraction be in 0 DEG C of ice-water bath 98% the concentrated sulfuric acid added in expansible graphite raw material, be slowly added Gao Meng
Sour potassium, stirs, and is placed in water bath with thermostatic control and is heated to 45-50 DEG C, keeps 0.5-2h；
B. deionized water to reaction system bubble-free is slowly added dropwise in resulting solution in step A to produce, is heated up in water bath with thermostatic control
To 95-100 DEG C, stir 25-30 minutes, hydrogen peroxide solution to the solution that mass fraction is 25% is added after natural cooling and is changed into bright
The suspension of yellow；
C. step B gained suspensions are filtered into obtain brown color colloid, is washed to neutrality through pickling and deionized water, dried after super
Ultrasonic disperse and centrifugally operated in pure water, supernatant is placed in dries to obtain graphene oxide powder in 65-75 DEG C of drying baker；
D. gained graphene oxide powder is placed in ultrasonic disperse 1-5h in polar solvent in step C, and supernatant is removed after centrifugation, obtains
To graphene oxide solution；
E. with polymer ultrafiltration membrane as basement membrane, graphene oxide solution is filtered using basement membrane, under 0.05-0.5MPa static pressures
Constantly promoting graphene oxide solution makes solvent molecule pass through milipore filter, obtains the nanofiltration film layer of moistening；
F. the product for covering the nanofiltration film layer of moistening is placed in vacuum drying chamber and is dried, final nanofiltration film layer is obtained；
(iv) is armor coated in nanofiltration film layer outer surface, and it is the PVA aqueous solution and NF membrane of 11-15% that protective layer uses concentration
Layer reaction is placed in being dried in vacuum drying chamber, and NF membrane is obtained；
Be pumped into water in former pond 11 in softening pond 33 by raw water pump 2, and the water after softening pond 33 and softening passes through communicating pipe
66 carry out filtration treatment into 20 micron polypropylene melt-blown filter micro-filters 44, and the water after filtering is entered by communicating pipe 66 lives
Property carbon filter 55 carry out it is secondary filter again,；
Water after secondary filter into 55 micron polypropylene melt-blown filter accurate filters 77 by being filtered communicating pipe 66
After treatment, the water after filtering in 55 micron polypropylene melt-blown filter accurate filters 77 is pumped into NF film NF membrane mistakes by high-pressure pump 88
Filter 99 is filtered,；
Water after filtering carries out sterilization processing into ultraviolet sterilizer 1010, by communicating pipe 66 entering water purification after sterilization processing
Pond 1111 is for people to use, that is, complete clean water treatment.
Preferably, the delivery port of former pond is connected with the water inlet of raw water pump by communicating pipe, and raw water pump delivery port
It is connected by communicating pipe with the water inlet for softening pond.
Preferably, the delivery port of 5 micron polypropylene melt-blown filter accurate filters passes through to connect with the water inlet of high-pressure pump
Pipe is connected, and the delivery port of high-pressure pump is connected with the water inlet of NF film nano-filtration membrane filters by communicating pipe.
Preferably, it is provided with uviol lamp in ultraviolet sterilizer.
Preferably, polymer ultrafiltration membrane material be polyether sulfone, polyacrylonitrile, polypropylene, polyethylene, polycaprolactam or
Any one in poly- furan alcohol.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized；
Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, the present invention
Scope limited rather than described above by appended claims, it is intended that the implication that will fall in the equivalency of claim
Included in the present invention with all changes in scope；Any reference in claim should not be considered as limitation involved
Claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (5)
1. a kind of combined type treatment method for rural sewage, it is characterised in that comprise the following steps：
Make sewage disposal system；
The sewage disposal system includes former pond（1）, soften pond（3）, 20 micron polypropylene melt-blown filter micro-filters（4）、
Active carbon filter（5）, 5 micron polypropylene melt-blown filter accurate filters（7）, nano-filtration membrane filter（9）, ultraviolet sterilizer
（10）And water purifying tank（11）；
The former pond（1）With softening pond（3）By raw water pump（2）Connection, the softening pond（3）Delivery port and 20 microns it is poly-
Propylene melt blown filter core micro-filter（4）Water inlet pass through communicating pipe（6）Connection, and 20 micron polypropylene melt-blown filter microfiltrations
Device（4）Delivery port and active carbon filter（5）Water inlet pass through communicating pipe（6）Connection；
The active carbon filter（5）Delivery port and 5 micron polypropylene melt-blown filter accurate filters（7）Water inlet pass through
Communicating pipe（6）Connection, and 5 micron polypropylene melt-blown filter accurate filters（7）With nano-filtration membrane filter（9）By high-pressure pump
（8）Connection, the nano-filtration membrane filter（9）Delivery port and ultraviolet sterilizer（10）Water inlet pass through communicating pipe（6）Connection,
And ultraviolet sterilizer（10）Delivery port and water purifying tank（11）By communicating pipe（6）Connection；
The preparation method of the NF membrane is comprised the following steps：
(i) is made as rectangular-shape using steel wire, and supporting layer is obtained；
(ii) covers porous carrier layer in obtained support layer surface；
(iii) covers nanofiltration film layer in porous carrier layer surface, and the preparation method of the nanofiltration film layer is comprised the following steps：
A. by mass fraction be in 0 DEG C of ice-water bath 98% the concentrated sulfuric acid added in expansible graphite raw material, be slowly added Gao Meng
Sour potassium, stirs, and is placed in water bath with thermostatic control and is heated to 45-50 DEG C, keeps 0.5-2h；
B. deionized water to reaction system bubble-free is slowly added dropwise in resulting solution in step A to produce, is heated up in water bath with thermostatic control
To 95-100 DEG C, stir 25-30 minutes, hydrogen peroxide solution to the solution that mass fraction is 25% is added after natural cooling and is changed into bright
The suspension of yellow；
C. step B gained suspensions are filtered into obtain brown color colloid, is washed to neutrality through pickling and deionized water, dried after super
Ultrasonic disperse and centrifugally operated in pure water, supernatant is placed in dries to obtain graphene oxide powder in 65-75 DEG C of drying baker；
D. gained graphene oxide powder is placed in ultrasonic disperse 1-5h in polar solvent in step C, and supernatant is removed after centrifugation, obtains
To graphene oxide solution；
E. with polymer ultrafiltration membrane as basement membrane, graphene oxide solution is filtered using basement membrane, under 0.05-0.5MPa static pressures
Constantly promoting graphene oxide solution makes solvent molecule pass through milipore filter, obtains the nanofiltration film layer of moistening；
F. the product for covering the nanofiltration film layer of moistening is placed in vacuum drying chamber and is dried, final nanofiltration film layer is obtained；
(iv) is armor coated in nanofiltration film layer outer surface, the protective layer use concentration for 11-15% the PVA aqueous solution with receive
Filter membranous layer reaction is placed in being dried in vacuum drying chamber, and NF membrane is obtained；
The raw water pump（2）By former pond（1）Interior water is pumped into softening pond（3）It is interior, by softening pond（3）Water after softening leads to
Spend communicating pipe（6）Into 20 micron polypropylene melt-blown filter micro-filters（4）Filtration treatment is carried out, the water after filtering is by connection
Pipe（6）Into active carbon filter（5）Carry out secondary filter；
Water after secondary filter passes through communicating pipe（6）Into 5 micron polypropylene melt-blown filter accurate filters（7）Filtered
After treatment, high-pressure pump（8）By 5 micron polypropylene melt-blown filter accurate filters（7）Water after interior filtering is pumped into nanofiltration membrane
Device（9）Filtered；
Water after filtering enters ultraviolet sterilizer（10）Sterilization processing is carried out, communicating pipe is passed through after sterilization processing（6）Into water purification
Pond（11）For using, that is, complete clean water treatment.
2. combined type treatment method for rural sewage according to claim 1, it is characterised in that：The former pond（1）
Delivery port and raw water pump（2）Water inlet pass through communicating pipe（6）Connection, and raw water pump（2）Delivery port with soften pond（3）'s
Water inlet passes through communicating pipe（6）Connection.
3. combined type treatment method for rural sewage according to claim 1, it is characterised in that：Described 5 microns poly- third
Alkene melt-blown filter accurate filter（7）Delivery port and high-pressure pump（8）Water inlet pass through communicating pipe（6）Connection, and high-pressure pump
（8）Delivery port and nano-filtration membrane filter（9）Water inlet pass through communicating pipe（6）Connection.
4. combined type treatment method for rural sewage according to claim 1, it is characterised in that：The ultraviolet sterilizer
（10）Inside it is provided with uviol lamp.
5. combined type treatment method for rural sewage according to claim 1, it is characterised in that：Described macromolecule surpasses
Filter membrane material is any one in polyether sulfone, polyacrylonitrile, polypropylene, polyethylene, polycaprolactam or poly- furan alcohol.
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| JPS60220115A (en) * | 1984-04-16 | 1985-11-02 | Yamazaki Keiichiro | Water purifier |
| US20030034292A1 (en) * | 2001-08-17 | 2003-02-20 | Matthew Rela | Water purifier |
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Application publication date: 20170531 |