CN118373530A - Sewage zero release evaporation crystallization system - Google Patents
Sewage zero release evaporation crystallization system Download PDFInfo
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- CN118373530A CN118373530A CN202410351175.0A CN202410351175A CN118373530A CN 118373530 A CN118373530 A CN 118373530A CN 202410351175 A CN202410351175 A CN 202410351175A CN 118373530 A CN118373530 A CN 118373530A
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- 239000010865 sewage Substances 0.000 title claims abstract description 254
- 238000001704 evaporation Methods 0.000 title claims abstract description 81
- 230000008020 evaporation Effects 0.000 title claims abstract description 77
- 238000002425 crystallisation Methods 0.000 title claims abstract description 44
- 230000008025 crystallization Effects 0.000 title claims abstract description 44
- 238000001914 filtration Methods 0.000 claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 71
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000012535 impurity Substances 0.000 claims abstract description 25
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 19
- 231100000719 pollutant Toxicity 0.000 claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 244000005700 microbiome Species 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 35
- 239000012528 membrane Substances 0.000 claims description 25
- 239000013078 crystal Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 claims description 12
- 239000005416 organic matter Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 241000588724 Escherichia coli Species 0.000 claims description 6
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000009298 carbon filtering Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 208000028659 discharge Diseases 0.000 description 17
- 239000000243 solution Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004503 fine granule Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004075 wastewater filtration Methods 0.000 description 1
- 238000004065 wastewater treatment 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
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of sewage treatment, in particular to a sewage zero-emission evaporation crystallization system, which comprises a sewage treatment system, wherein the sewage treatment system also comprises a sewage sand filtering tank, is used for filtering gravel particles in sewage and can filter larger impurities in the sewage; a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material; the sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage; and the sewage ultrafiltration unit is used for filtering deep organic matters and microorganisms from the treated water. According to the sewage zero-emission evaporative crystallization system, through arranging a plurality of groups of filtering, ultrafiltration and reverse osmosis structures, impurity pollutants, microorganisms, organic matters and the like in industrial sewage can be removed, so that the sewage only contains partial high-salt and other dissolved matters, and then the sewage is evaporated and crystallized by utilizing low-temperature evaporation, so that the dissolved matters and water can be separated.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage zero-emission evaporation crystallization system.
Background
The zero discharge of sewage refers to that in the production process, the discharge of pollutants and energy sources is infinitely reduced through advanced technology and management means until reaching zero, the zero discharge technology is to comprehensively apply physical, chemical and biochemical processes such as membrane separation, evaporation crystallization, drying and the like, concentrate solid impurities in the wastewater to very high concentration, most of water is recycled, a small amount of water accompanied with solid waste is left, one of the following outlet paths can be selected according to the specific conditions of each enterprise without discharging the system; the method comprises the steps of controlling the emission of energy and resources inevitably generated in the production process, reducing the emission to zero, simultaneously utilizing the energy and resources which have to be emitted as much as possible, and finally eliminating the non-renewable resources and the use of the energy, wherein in the industrial field, the method can involve the steps of repeatedly using industrial wastewater, concentrating the industrial wastewater to be high in salt content and pollutants, and then recycling the industrial wastewater, or recycling the concentrated solid waste as chemical raw materials, so as to realize the discharge of any waste liquid out of a factory, realize the complete recycling of natural resources, and further not leave any waste for the atmosphere, water and soil;
when the current industry carries out zero release treatment to sewage, can only accomplish COD, ammonia nitrogen in the sewage, partial organic matter is handled, but to the high salt sewage that contains high salt solubles, can't get rid of wherein high salt solubles effectively, and at present in order to reach zero release sewage demand, adopt chemical treatment sewage, but because of using chemical agent, produce new pollution source, make sewage treatment hardly really reach zero release demand, and simply use physical evaporation's mode to carry out sewage zero release treatment, hardly get rid of microorganism and organic matter in the water, also make sewage zero release hardly reach the demand accurately.
Disclosure of Invention
The invention aims to provide a sewage zero-emission evaporative crystallization system so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the sewage zero-emission evaporative crystallization system comprises a sewage treatment system, and the sewage treatment system further comprises:
the sewage sand filtering tank is used for filtering gravel particles in sewage and filtering larger impurities in the sewage;
a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material;
The sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage;
The sewage ultrafiltration unit is used for carrying out deep-level organic matter and microorganism filtration on the treated water and can filter substances such as escherichia coli, suspended solids, iron, manganese, fluorine and the like in the water;
the sewage reverse osmosis device is used for carrying out reverse osmosis filtration treatment on dissolved substances in water, most of sewage is treated by reverse osmosis to obtain clean water without dissolved substances, and the rest water containing dissolved substances is further treated;
The sewage low-temperature evaporation unit is used for performing low-temperature evaporation treatment on the residual sewage after reverse osmosis; the sewage containing dissolved substances is further reduced after evaporation, and clean water is discharged through evaporation;
And the sewage evaporation crystallization unit is used for performing evaporation separation treatment on sewage with the dissolved matters remained finally, and separating water from the dissolved matters in the sewage, so that the dissolved matters are crystallized.
In a further embodiment, a filter screen is installed in the sewage filter sand tank, and an activated carbon plate is filled in the sewage filter carbon tank.
In a further embodiment, the wastewater ultrafiltration unit comprises a primary filtration tank and a secondary filtration tank, wherein the primary filtration tank is internally provided with a coarse filtration screen, and the secondary filtration tank is internally provided with a fine filtration membrane.
In a further embodiment, the primary filter tank and the secondary filter tank are internally provided with flow sensors, and the two flow sensors are arranged on one side of the water outlet of the coarse filter screen and the fine filter screen.
In a further embodiment, the wastewater ultrafiltration unit comprises an ultrafiltration tank, an ultrafiltration booster, and an ultrafiltration pressure relief valve;
The ultrafiltration tank is internally provided with an ultrafiltration membrane, one side, close to the water outlet of the ultrafiltration membrane, of the inner wall of the ultrafiltration tank is provided with an ultrafiltration detection module, and the ultrafiltration booster and the ultrafiltration pressure reducing valve are respectively arranged at the water inlet position and the water outlet position of the ultrafiltration tank.
In a further embodiment, the ultrafiltration detection module comprises a flow sensor and a pressure sensor.
In a further embodiment, the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit are both connected with a steam discharge pipeline, and a crystal storage tank is arranged in the sewage evaporation crystallization unit and used for storing and recycling evaporated crystals.
In a further embodiment, a steam condensing unit is installed at one end of the steam discharging pipeline far away from the sewage low-temperature evaporating unit and the sewage evaporating and crystallizing unit, and is used for condensing the evaporated water vapor to obtain clean condensed water.
In a further embodiment, the crystal storage tank is internally provided with a rotary stirring rod, so that the problems of crystal residue and scaling blockage in the crystal storage tank are prevented.
In a further embodiment, the sewage sand filtering tank, the sewage carbon filtering tank, the sewage filtering unit, the sewage ultrafiltration unit, the sewage reverse osmosis device, the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit are all provided with a water inlet and a water outlet, and are sequentially connected through pipelines.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, through arranging a plurality of groups of filtering, ultrafiltration and reverse osmosis structures, impurity pollutants, microorganisms, organic matters and the like in industrial sewage can be removed, so that the sewage only contains partial high-salt and other dissolved matters, then the sewage is evaporated and crystallized by low-temperature evaporation, the dissolved matters and water can be separated to obtain clean recovered water, and the separated crystals are recycled, so that the problem that the dissolved matters still exist after sewage treatment is prevented, and the quality of zero-emission sewage treatment is improved;
2. According to the sewage low-temperature evaporation unit, the boiling point of sewage can be reduced, so that the sewage is evaporated at a lower temperature to obtain clean distilled water, the evaporated distilled water can be reused, the consumption in the sewage treatment process can be reduced better, the sewage zero-discharge treatment efficiency is improved, and the sewage zero-discharge treatment cost is reduced;
3. according to the invention, the sewage sand filtering tank, the sewage carbon filtering tank, the sewage filtering unit and the sewage ultrafiltration unit are arranged, so that particle impurities, microorganisms and organic matters in sewage can be treated without adopting chemistry to treat the microorganisms and the organic matters, so that the occurrence of secondary pollution is reduced, and meanwhile, the microorganisms and the organic matters in water can be treated, so that the sewage treatment is closer to zero emission, and the effect of zero emission treatment of the sewage is improved;
4. According to the invention, the sewage reverse osmosis device is arranged, so that after the treatment of particle impurities, pollutants, microorganisms and organic matters in sewage is finished, the sewage containing dissolved matters is subjected to reverse osmosis filtration by utilizing a reverse osmosis technology, the sewage quantity can be reduced, and then the sewage after reverse osmosis is subjected to evaporation crystallization treatment, so that the better sewage zero emission requirement is achieved.
Drawings
FIG. 1 is a schematic diagram of a system for wastewater treatment according to the present invention;
FIG. 2 is a schematic diagram of a system of a wastewater ultrafiltration unit of the present invention;
FIG. 3 is a schematic diagram of a system of the wastewater filtration unit of the present invention;
FIG. 4 is a schematic diagram of the system of the low temperature sewage evaporating unit and the sewage evaporating and crystallizing unit of the present invention.
Detailed Description
The following description will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-4, the present embodiment provides a sewage zero-emission evaporative crystallization system, which includes a sewage treatment system, and the sewage treatment system further includes:
the sewage sand filtering tank is used for filtering gravel particles in sewage and filtering larger impurities in the sewage;
a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material;
The sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage;
The sewage ultrafiltration unit is used for carrying out deep-level organic matter and microorganism filtration on the treated water and can filter substances such as escherichia coli, suspended solids, iron, manganese, fluorine and the like in the water;
The sewage reverse osmosis device is used for carrying out reverse osmosis filtration treatment on dissolved substances in water, discharging most of sewage after reverse osmosis treatment to obtain clean water without dissolved substances, and further treating the residual water containing dissolved substances, wherein reverse osmosis is a membrane separation operation for separating solvent from solution by taking pressure difference as driving force, pressure is applied to feed liquid on one side of the membrane, when the pressure exceeds the osmotic pressure of the membrane, the solvent can reverse osmosis in a reverse osmosis direction, so that the permeated solvent, namely permeate liquid, is obtained on the low pressure side of the membrane, concentrated solution, namely concentrate, is obtained on the high pressure side of the membrane, and brine is obtained on the low pressure side of the membrane if the reverse osmosis treatment is carried out on the seawater;
The sewage low-temperature evaporation unit is used for performing low-temperature evaporation treatment on the residual sewage after reverse osmosis; the sewage containing dissolved substances is further reduced after evaporation, and clean water is discharged through evaporation;
The sewage evaporation crystallization unit is used for carrying out evaporation separation treatment on sewage with the finally residual dissolved matters, separating water from the dissolved matters in the sewage, crystallizing the dissolved matters, crystallizing the evaporated residual dissolved matters of the sewage, and reutilizing the crystallized dissolved matters or independently treating the crystallized dissolved matters.
The sewage sand filtering tank, the sewage carbon filtering tank, the sewage filtering unit, the sewage ultrafiltration unit, the sewage reverse osmosis device, the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit are all provided with a water inlet and a water outlet and are sequentially connected through pipelines, wherein the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit are respectively provided with a steam discharge port for being connected with a steam discharge pipeline, and the pipeline is utilized to communicate to form a set of stable and efficient sewage zero discharge treatment system through the components, so that the safety and the high efficiency of industrial sewage treatment are ensured.
Example two
Referring to fig. 3, a sewage zero discharge evaporative crystallization system, including a sewage treatment system, is characterized in that: the sewage treatment system further comprises:
the sewage sand filtering tank is used for filtering gravel particles in sewage and filtering larger impurities in the sewage;
a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material;
The sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage;
The sewage ultrafiltration unit is used for carrying out deep-level organic matter and microorganism filtration on the treated water and can filter substances such as escherichia coli, suspended solids, iron, manganese, fluorine and the like in the water;
the sewage reverse osmosis device is used for carrying out reverse osmosis filtration treatment on dissolved substances in water, most of sewage is treated by reverse osmosis to obtain clean water without dissolved substances, and the rest water containing dissolved substances is further treated;
The sewage low-temperature evaporation unit is used for performing low-temperature evaporation treatment on the residual sewage after reverse osmosis; the sewage containing dissolved substances is further reduced after evaporation, and clean water is discharged through evaporation;
And the sewage evaporation crystallization unit is used for performing evaporation separation treatment on sewage with the dissolved matters remained finally, and separating water from the dissolved matters in the sewage, so that the dissolved matters are crystallized.
Install the filter screen in the sewage filter sand jar, the inside packing of sewage filter sand jar has the activated carbon sheet, can filter large granule gravel and impurity in the sewage, and can further carry out the filtration purification of sewage after filtering impurity through the activated carbon sheet, sewage ultrafiltration unit includes primary filter jar and secondary filter jar, primary filter jar internally mounted has coarse filter screen, secondary filter jar internally mounted fine filtration membrane, flow sensor is all installed to primary filter jar and secondary filter jar inside, and two flow sensor all install in one side of coarse filter screen and fine filtration membrane play water, sewage is through foretell impurity and activated carbon filtration purification back, rethread primary filter jar and secondary filter jar, both are equipped with coarse filter screen and fine filtration membrane respectively, can be to the sewage of filtering impurity, further carry out the further filtration treatment to the fine granule impurity that contains in the sewage, and utilize flow sensor to detect whether the flow in the filter jar is stable, when the flow reduces more, then represent coarse filter screen and fine filtration about to saturate the inefficacy, monitoring that can be better is changed, guarantee that the filter jar can carry out sewage treatment better more stably.
Example III
Referring to fig. 2, a sewage zero discharge evaporative crystallization system, including a sewage treatment system, is characterized in that: the sewage treatment system further comprises:
the sewage sand filtering tank is used for filtering gravel particles in sewage and filtering larger impurities in the sewage;
a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material;
The sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage;
The sewage ultrafiltration unit is used for carrying out deep-level organic matter and microorganism filtration on the treated water and can filter substances such as escherichia coli, suspended solids, iron, manganese, fluorine and the like in the water;
the sewage reverse osmosis device is used for carrying out reverse osmosis filtration treatment on dissolved substances in water, most of sewage is treated by reverse osmosis to obtain clean water without dissolved substances, and the rest water containing dissolved substances is further treated;
The sewage low-temperature evaporation unit is used for performing low-temperature evaporation treatment on the residual sewage after reverse osmosis; the sewage containing dissolved substances is further reduced after evaporation, and clean water is discharged through evaporation;
And the sewage evaporation crystallization unit is used for performing evaporation separation treatment on sewage with the dissolved matters remained finally, and separating water from the dissolved matters in the sewage, so that the dissolved matters are crystallized.
The sewage ultrafiltration unit comprises an ultrafiltration tank, an ultrafiltration booster and an ultrafiltration pressure reducing valve, wherein the ultrafiltration pressure reducing valve is an electromagnetic valve and can be opened and closed in real time by the pressure monitored by a pressure sensor, the ultrafiltration tank is internally provided with an ultrafiltration membrane, one side of the inner wall of the ultrafiltration tank, which is close to the water outlet of the ultrafiltration membrane, is provided with an ultrafiltration detection module, the ultrafiltration booster and the ultrafiltration pressure reducing valve are respectively arranged at the water inlet position and the water outlet position of the ultrafiltration tank, the ultrafiltration detection module comprises a flow sensor and a pressure sensor, the sewage ultrafiltration unit filters and purifies sewage by utilizing the ultrafiltration membrane, in the ultrafiltration process, under the pushing of the pressure, an aqueous solution flows through the surface of the membrane, a solvent (sewage) smaller than a membrane hole and a small molecular solute are permeated into a purified solution (filtered solution), a solute and a solute group larger than the membrane hole are intercepted and discharged along with the water flow, the ultrafiltration process is dynamically filtered, separation is completed under a flowing state, and the solute is only deposited on the surface of the membrane in a limited state, and the ultrafiltration rate is attenuated to a certain degree and tends to balance, and can be recovered by cleaning;
The ultrafiltration is a pressurized membrane separation technology, namely, under a certain pressure, small molecular solutes and solvents pass through a special film with a certain aperture, so that the large molecular solutes cannot permeate and are left on one side of the film, thus the large molecular substances are partially purified, microorganisms and organic matters in sewage which need to be chemically neutralized can be filtered and purified, the filtration can be realized without adopting chemical reagents, the residual tiny impurities in the sewage can be better removed through a sewage ultrafiltration unit, the subsequent evaporation and separation of the sewage can be carried out, the achievement effect of zero discharge of the sewage is ensured, and the secondary pollution is reduced;
Flow sensor and pressure sensor can monitor the inside flow and the pressure of sewage ultrafiltration unit respectively, when the inside flow of sewage ultrafiltration unit reduces, then represent that the milipore filter is about to saturation failure this moment, need change in time or wash, and when pressure sensor detects the inside pressure of sewage ultrafiltration unit too high, the relief valve opens and steps down this moment, and when the pressure of detection is too low, can influence the quality of ultrafiltration, ultrafiltration booster starts this moment, increase the inside pressure of sewage ultrafiltration unit and guarantee the stability and the effect of ultrafiltration.
Example IV
Referring to fig. 4, a sewage zero discharge evaporative crystallization system, comprising a sewage treatment system, characterized in that: the sewage treatment system further comprises:
the sewage sand filtering tank is used for filtering gravel particles in sewage and filtering larger impurities in the sewage;
a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material;
The sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage;
The sewage ultrafiltration unit is used for carrying out deep-level organic matter and microorganism filtration on the treated water and can filter substances such as escherichia coli, suspended solids, iron, manganese, fluorine and the like in the water;
the sewage reverse osmosis device is used for carrying out reverse osmosis filtration treatment on dissolved substances in water, most of sewage is treated by reverse osmosis to obtain clean water without dissolved substances, and the rest water containing dissolved substances is further treated;
The sewage low-temperature evaporation unit is used for performing low-temperature evaporation treatment on the residual sewage after reverse osmosis; the sewage containing dissolved substances is further reduced after evaporation, and clean water is discharged through evaporation;
And the sewage evaporation crystallization unit is used for performing evaporation separation treatment on sewage with the dissolved matters remained finally, and separating water from the dissolved matters in the sewage, so that the dissolved matters are crystallized.
The sewage low temperature evaporation unit and the sewage evaporation crystallization unit are both connected with a steam discharge pipeline, a crystal storage tank is arranged in the sewage evaporation crystallization unit and used for storing and recycling evaporated crystals, a pressure adjusting structure is arranged in the sewage low temperature evaporation unit and used for adjusting the pressure in the sewage low temperature evaporation unit, the boiling point of liquid can be reduced, the sewage can be evaporated through low temperature, the use cost of sewage evaporation separation is reduced, steam generated by the sewage low temperature evaporation unit is discharged through the pipeline, a pressure adjusting and temperature adjusting structure is arranged in the sewage evaporation crystallization unit, and the evaporated dissolved matters in the sewage are crystallized through the sewage evaporation crystallization unit by utilizing the adjusting pressure and temperature, so that the dissolved matters in the sewage can be separated as solids.
The steam condensing unit is installed to one end that the steam discharge pipeline kept away from sewage low temperature evaporation unit and sewage evaporation crystallization unit, but steam condensing unit internally mounted has the condensation pipeline of circulation flow liquid for condense the steam that evaporates and obtain clean comdenstion water, after the filtration purification is carried out through each structure of front end to sewage, a large amount of dissolved substances have in the sewage that remains this moment, after the sewage is again separated by evaporation, the solute crystallization in the sewage is discharged, and the steam of evaporation is then carried in the steam condensing unit by steam discharge pipeline, at this moment carry comdenstion water to the condenser pipe in the steam condensing unit, at this moment hot steam and comdenstion water heat exchange for the steam condenses into clean return water, later with clean water discharge recovery recycle from the steam condensing unit can.
The utility model provides a crystal storage jar internally mounted has pivoted puddler, prevents that the inside crystalline solid residue that appears of crystal storage jar from appearing and the problem of scale deposit jam from appearing, foretell puddler end is equipped with the scraper blade, can scrape the cleanness to crystal storage jar inner wall when the inside crystalline solid that has the sewage solubles of storage jar, prevents that crystalline solid from storing in jar internal for a long time, causes jar internal portion to remain crystalline solid, and appear that the problem of crystalline solid solidification scale deposit appears, can make follow-up at the inside crystalline solid of crystal storage jar, and recovery processing or reuse take out more convenient when taking out.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a sewage zero release evaporation crystallization system, includes sewage treatment system, its characterized in that: the sewage treatment system further comprises:
the sewage sand filtering tank is used for filtering gravel particles in sewage and filtering larger impurities in the sewage;
a sewage carbon filter tank for absorbing and filtering pollutants in sewage by utilizing a carbon filter material;
The sewage filtering unit is used for further filtering some tiny impurities and pollutants remained in the filtered sewage;
The sewage ultrafiltration unit is used for carrying out deep-level organic matter and microorganism filtration on the treated water and can filter substances such as escherichia coli, suspended solids, iron, manganese, fluorine and the like in the water;
the sewage reverse osmosis device is used for carrying out reverse osmosis filtration treatment on dissolved substances in water, most of sewage is treated by reverse osmosis to obtain clean water without dissolved substances, and the rest water containing dissolved substances is further treated;
The sewage low-temperature evaporation unit is used for performing low-temperature evaporation treatment on the residual sewage after reverse osmosis; the sewage containing dissolved substances is further reduced after evaporation, and clean water is discharged through evaporation;
And the sewage evaporation crystallization unit is used for performing evaporation separation treatment on sewage with the dissolved matters remained finally, and separating water from the dissolved matters in the sewage, so that the dissolved matters are crystallized.
2. The wastewater zero-emission evaporative crystallization system according to claim 1, wherein: the sewage sand filtering tank is internally provided with a filter screen, and the inside of the sewage sand filtering tank is filled with an activated carbon plate.
3. The wastewater zero-emission evaporative crystallization system according to claim 1, wherein: the sewage ultrafiltration unit comprises a primary filtration tank and a secondary filtration tank, wherein a coarse filter screen is arranged in the primary filtration tank, and a fine filter membrane is arranged in the secondary filtration tank.
4. A sewage zero release evaporative crystallization system according to claim 3, wherein: the flow sensors are arranged in the primary filter tank and the secondary filter tank, and the two flow sensors are arranged on one side of the coarse filter screen and the fine filter membrane, which is used for discharging water.
5. The wastewater zero-emission evaporative crystallization system according to claim 1, wherein: the sewage ultrafiltration unit comprises an ultrafiltration tank, an ultrafiltration booster and an ultrafiltration pressure reducing valve;
The ultrafiltration tank is internally provided with an ultrafiltration membrane, one side, close to the water outlet of the ultrafiltration membrane, of the inner wall of the ultrafiltration tank is provided with an ultrafiltration detection module, and the ultrafiltration booster and the ultrafiltration pressure reducing valve are respectively arranged at the water inlet position and the water outlet position of the ultrafiltration tank.
6. The wastewater zero-emission evaporative crystallization system according to claim 5, wherein: the ultrafiltration detection module comprises a flow sensor and a pressure sensor.
7. The wastewater zero-emission evaporative crystallization system according to claim 1, wherein: the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit are both connected with a steam discharge pipeline, and a crystal storage tank is arranged in the sewage evaporation crystallization unit and used for storing and recycling evaporated crystals.
8. The wastewater zero-emission evaporative crystallization system according to claim 7, wherein: and one end of the steam discharge pipeline, which is far away from the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit, is provided with a steam condensation unit for condensing the evaporated water vapor to obtain clean condensed water.
9. The wastewater zero-emission evaporative crystallization system according to claim 7, wherein: the crystal storage tank internally provided with a rotary stirring rod prevents the occurrence of residual crystals and scaling blockage inside the crystal storage tank.
10. The wastewater zero-emission evaporative crystallization system according to claim 1, wherein: the sewage sand filtering tank, the sewage carbon filtering tank, the sewage filtering unit, the sewage ultrafiltration unit, the sewage reverse osmosis device, the sewage low-temperature evaporation unit and the sewage evaporation crystallization unit are all provided with a water inlet and a water outlet and are sequentially connected through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410351175.0A CN118373530A (en) | 2024-03-26 | 2024-03-26 | Sewage zero release evaporation crystallization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410351175.0A CN118373530A (en) | 2024-03-26 | 2024-03-26 | Sewage zero release evaporation crystallization system |
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| CN118373530A true CN118373530A (en) | 2024-07-23 |
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| CN202410351175.0A Pending CN118373530A (en) | 2024-03-26 | 2024-03-26 | Sewage zero release evaporation crystallization system |
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| CN (1) | CN118373530A (en) |
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- 2024-03-26 CN CN202410351175.0A patent/CN118373530A/en active Pending
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