CN203545715U - Circular treatment system of high-concentration brine waste - Google Patents
Circular treatment system of high-concentration brine waste Download PDFInfo
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- CN203545715U CN203545715U CN201320587496.8U CN201320587496U CN203545715U CN 203545715 U CN203545715 U CN 203545715U CN 201320587496 U CN201320587496 U CN 201320587496U CN 203545715 U CN203545715 U CN 203545715U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
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- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The utility model discloses a circular treatment system of high-concentration brine waste. The circular treatment system comprises an evaporation chamber, a condensation chamber, a solid-liquid separator, a mixing tank, a heat exchanger, a heat pump unit, an air cooler and a fan, wherein the evaporation chamber, the condensation chamber and the fan are connected with one another to form a circulating loop; a strong brine outlet of the evaporation chamber is orderly connected with the mixing tank and the heat exchanger; one water outlet end of the heat exchanger is connected with a tower top of the evaporation chamber to form a second circulating loop; a crystal substance outlet in the bottom of the evaporation chamber is connected with the solid-liquid separator; a liquid outlet end of the solid-liquid separator is connected with the evaporation chamber to form a third circulating loop; the condensation chamber is orderly connected with a condenser of the heat pump unit, the heat exchanger, an evaporator of the heat pump unit, and the air cooler; the water outlet end of the air cooler is connected with the tower top of the condensation chamber to form a fourth circulating loop. The wastewater is processed by each circulating loop in a cycle, and then salt in the wastewater is recovered, and the generated is reused, so that resourceful and innocent treatment of the high-concentration brine waste is achieved.
Description
Technical field
The utility model relates to a kind for the treatment of system of waste water, is specifically related to a kind of evaporative crystallization circulating treating system of high-concentration salt-containing wastewater, belongs to environment-protective water process field.
Background technology
Along with China's industrial expansion, the quantity discharged of trade effluent increases day by day, wherein a larger part is high-concentration salt-containing wastewater, this Wastewater on Ecological Environmental has many harm, and industrial main methods is to utilize efficient Facultative Halophiles to process or thin up discharge, so both waste great lot of water resources, can not control the salt amount entering in environment from total amount again, so the processing of high-concentration salt-containing wastewater has become Environmental Protection in China industry urgent need to solve the problem.
In order to solve high-concentration salt-containing wastewater, process problem, occurred in recent years many evaporating, concentrating and crystallizing equipment, but these equipment are all relatively independent operating unit substantially.For example, evaporation has single-effect evaporation, multiple-effect evaporation, climbing-film evaporation and falling film evaporation etc., and crystallization is also divided into condensing crystal, crystallisation by cooling, isoelectric point crystallizing etc.The wherein structure more complicated of equipment in each operating unit, function singleness, operation of equipment is convenient not, and the energy consumption of each unit operation is relatively high, and energy repeating utilization factor is lower.Therefore, this unit operation without versatility is produced and is made troubles to enterprise.In function of mechanical steam recompression technology, used recycle compressor, to secondary steam recompression, heated then to former water, compared with traditional crystallizer, energy consumption has obtained certain saving.But not enough, corresponding supporting equipment also increases thereupon, be that whole system becomes complexity, floor space is larger, and working cost also increases relatively.Poor for heat transfer effect in existing production technology in falling film evaporation technology, the shortcomings such as vaporization efficiency is low, carry the high-efficiency falling film evaporation device that has encircleed a kind of tangential admission rational in infrastructure, thus even while having realized liquid inflow heat-transfer device, greatly improved heat exchange efficiency.The features such as but the problem of stopping up about the easy incrustation of falling film evaporation does not solve, and falling film evaporation exists energy consumption high, and heat recycling is low.Therefore, in evaporating, concentrating and crystallizing process, how to improve the utilization ratio of heat energy, reduce running cost, and make evaporating, concentrating and crystallizing integrated, the system element of realizing efficient stable operation and having certain versatility is wastewater treatment industry problem demanding prompt solution always.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of compact construction, systematize are provided, floor space is little, energy consumption is low, energy repeating utilization factor is high, working cost is low, the evaporative crystallization circulating treating system of the high-concentration salt-containing wastewater efficient, energy-conservation, operating performance is stable.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of circulating treating system of high-concentration salt-containing wastewater, comprise evaporator room, condensing chamber, solid-liquid separator, tempering tank, interchanger, heat pump set, air cooler and blower fan, wherein, described evaporator room, condensing chamber and blower fan are connected to each other and form the first circulation loop, the strong brine outlet of described evaporator room is connected with tempering tank in turn by pipeline and recycle pump, interchanger, and water side of interchanger and the tower top of evaporator room are connected to form the second circulation loop, the crystallisate outlet of described evaporator room bottom is connected with solid-liquid separator by pipeline and recycle pump, and the liquid discharge water end (W.E.) of solid-liquid separator is connected with evaporator room and is formed the 3rd circulation loop by pipeline and recycle pump, described condensing chamber is connected with condenser, interchanger, the vaporizer of heat pump set, the air cooler of heat pump set successively by pipeline and recycle pump, and the water side of air cooler and the tower top of condensing chamber are connected to form the 4th circulation loop.
Preferably: the structure of described evaporator room and condensing chamber is identical, and its inside is disposed with water distribution system, packing layer, water-recovering device and storage tank from top to bottom.
Preferably: described water distribution system comprises water distribution pipeline and is arranged at the water-distribution nozzle arranging on water distribution pipeline downwards.
Preferably: on described packing layer, be provided with filler, described filler is a ripple filler.
Preferably: the profile of described water-recovering device is V-structure.
Preferably: the recycle pump in described the second circulation loop and the 3rd circulation loop is spiral pump, and the recycle pump in the 4th circulation loop is Ordinary Centrifugal Pumps.
Preferably: described blower fan is axial flow frequency conversion fan.
Preferably: described interchanger is titanium plate-type heat exchanger; Described heat pump set is lithium bromide absorption type heat pump unit.
Preferably: described circulating treating system also comprises realizes to whole system the PLC Controlling System that operation is controlled automatically.
Than existing waste water evaporative crystallization treatment system, circulating treating system of the present utility model has the following advantages:
1) circulating treating system utilization of the present utility model is low-temperature circulating water, flushing cinder water, underground heat tail water, solar water, used heat wet goods waste heat, and therefore, system high efficiency is energy-conservation, the corresponding working cost that greatly reduces system;
2) because vaporization temperature is below 80 ℃, temperature is relatively low, therefore can realize efficient cryogenic;
3) by spray condensation, energy entrained aqueous vapor can be shifted in water inlet, and then heat to former water in the absorption through unit, take full advantage of energy, reclaimed energy, energy repeating utilization factor is high;
4) whole system, in air-tight state, does not produce any waste gas, in air, does not discharge any gas, free from environmental pollution;
5) by continuous circulating and evaporating and concentration, finally make the salt crystallization in waste water, the clear water that system produces can carry out reuse, processes thoroughly, reaches real " zero release " requirement, has realized resource utilization and the harmless treatment of all kinds of high-concentration salt-containing wastewaters;
6) handling object is extensive, and chemical, pharmacy class and various high-concentration salt-containing wastewater and sea water desaltination etc. are all suitable for;
7) without high-temperature high-pressure apparatus, system is safe and reliable to operation, and intelligence;
8) and by evaporation and crystallization effectively merge, floor space is little, has realized system integration.
Accompanying drawing explanation
Fig. 1 shows the structural representation of circulating treating system described in the utility model;
Fig. 2 is the water content graphic representation of saturated moist air under normal pressure, differing temps;
Fig. 3 is the saturated vapor pressure graphic representation of water vapor under differing temps.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Figure 1, circulating treating system described in the utility model, comprise evaporator room 1, condensing chamber 2, solid-liquid separator 3, tempering tank 4, interchanger 5, heat pump set 6, air cooler 7 and blower fan 8, wherein, described evaporator room 1, condensing chamber 2 and blower fan 8 are connected to form the first circulation loop by pipeline, the strong brine outlet of described evaporator room 1 is connected with tempering tank 4 in turn by pipeline and recycle pump, interchanger 5, and a water side of interchanger 5 is connected to form the second circulation loop with the tower top of evaporator room 1, the crystallisate outlet of described evaporator room 1 bottom is connected with solid-liquid separator 3 by pipeline and recycle pump, and the isolated liquid discharge water end (W.E.) of solid-liquid separator 3 is connected with evaporator room 1 and is formed the 3rd circulation loop by pipeline and recycle pump, described condensing chamber 2 is connected with condenser, interchanger 5, the vaporizer of heat pump set 6, the air cooler 7 of heat pump set 6 successively by pipeline and recycle pump, and the water side of air cooler 7 is connected to form the 4th circulation loop with the tower top of condensing chamber 2.
In the utility model, described evaporator room 1 is identical with the structure of condensing chamber 2, by can resistance to 80 ℃ of left and right, and have anticorrosion, be incubated and have the material of some strength and good sealing property as stainless steel, the cross-flow type mechanical ventilation equipment that glass reinforced plastic etc. are made, be that the flow direction of water is for from top to bottom, the flow direction of wind is that a side is entered opposite side and gone out, the inside of described evaporator room 1 and condensing chamber 2 is disposed with water distribution system from top to bottom, packing layer, water-recovering device and storage tank, described water distribution system is spray-type water distribution, comprise water distribution pipeline and be arranged at the water-distribution nozzle arranging on water distribution pipeline downwards, on described packing layer, be provided with filler, described filler is a ripple filler, the profile of described water-recovering device is V-structure, to stop as much as possible the fine droplet in evaporator room 1 and condensing chamber 2, by the air of pump circulation, taken away, described storage tank is positioned at the bottom of evaporator room 1 or condensing chamber 2, there is certain gradient, can make the salt of crystallization discharge smoothly in time.In the utility model, described water-distribution nozzle, water-recovering device and storage tank all can resistance to 80 ℃ of left and right temperature, and corrosion-resistant, and in addition, according to the wastewater flow rate of required processing, the evaporator room 1 in the utility model and condensing chamber 2 can be used in multiple series connection.
Further, in circulating treating system described in the utility model, the recycle pump in the second circulation loop and the 3rd circulation loop is spiral pump, and the recycle pump in the 4th circulation loop is Ordinary Centrifugal Pumps.Described blower fan 8 is axial flow frequency conversion fan, has explosion-proof and Anticorrosive Character; The effect of described tempering tank 4 is fully to mix by former water with from evaporator room 1 strong brine out, by the material with preservative property, is made; Described interchanger 5 is efficient and rot-resistant titanium plate-type heat exchanger; Described heat pump set 6 adopts lithium bromide absorption type heat pump unit, comprises vaporizer and condenser, to utilize more low-grade industrial exhaust heat and used heat; In addition, circulating treating system described in the utility model also comprises the PLC Controlling System that whole system is realized to automatic operation control.
With circulating treating system described in the utility model, process high-concentration salt-containing wastewater, its cardinal principle is to utilize the difference of the water content of saturated moist air under condition of different temperatures to evaporate separation, by air is carried out to heating and cooling, make it under the promotion of saturated vapor pressure, constantly absorb and discharge a certain amount of water vapour, and then realize evaporation and the crystallization of strong brine.Fig. 2 shows the water content graphic representation of saturated moist air under differing temps, and Fig. 3 is the saturated vapor pressure graphic representation of water vapour under the differing temps corresponding with it.
The treatment process of circulating treating system described in the utility model comprises the following steps:
1) once circulation: evaporator room 1 is in the process that strong brine is evaporated, the power providing by blower fan 8 makes air carry out pump circulation in evaporator room 1 and condensing chamber 2, freezing air evaporator room 1 interior through with former water heat exchange after carry a part of aqueous vapor and heat to condensing chamber 2, and lower the temperature with water coolant heat exchange in condensing chamber 2, air after cooling is back in evaporator room 1 again under the effect of blower fan 8, thereby completes the circulation of the first circulation loop; This working cycle is that the sprinkle on filler heats and condensation air by water, that is: hot strong brine is carried out to sprinkle evaporator room 1 is interior, by with air heat-exchange and then make moisture evaporation, the origin of heat that aqueous vapor is taken away is in the decline of hot salt brine self-temperature, utilize the water that sprinkle temperature is lower to carry out condensation to freezing air condensing chamber 2 is interior, condensation aqueous vapor institute liberated heat is stored in water, by evaporation and condensation, strong brine is carried out to condensing crystal, the clear water that condensing chamber 2 condensations produce can be used as middle water reuse;
2) secondary circulation: the strong brine that evaporator room 1 evaporation produces promotes and enters in tempering tank 4 through pump, and after mixing with the former water of high-concentration salt-containing wastewater in tempering tank 4, through pump lifting, enter heat exchange in interchanger 5 and again from tower top, enter in evaporator room 1 and evaporate after heating up, complete the circulation of the second circulation loop;
3) three circulations: the mixed solution that contains crystallisate of evaporator room 1 bottom enrichment promotes and enters into solid-liquid separator 4 separation of dewatering through pump, when current enter with tangential direction after solid-liquid separator 4 under certain pressure, can produce strong rotatablely moving, because the density of crystallisate and water is different, at centrifugal force, centripetal force, under the acting in conjunction of buoyancy and fluid drag force, the crystallisate that density is large sinks down into the bottom of solid-liquid separator 4, and go to salt refining unit through the solid salt outlet of bottom, and low density salt solution rises, and through pipeline, be back to and in evaporator room 1, carry out circulating and evaporating under the effect of recycle pump, thereby complete the circulation of the 3rd circulation loop,
4) circulation everywhere: the high-temperature cooling water producing in condensing chamber 2 is under the effect of recycle pump, the condenser that enters into heat pump set 6 heats up after 5～10 ℃, enter in interchanger 5 with secondary circulation in wastewater heat exchange cooling after enter into heat pump set 6 vaporizer lower the temperature, subsequently, water coolant enters into after air cooler 7 is lowered the temperature again and is back to condensing chamber 2 from tower top, thereby completes the circulation of the 4th circulation loop.
In the utility model, although evaporator room 1 is identical with the internal structure of condensing chamber 2, but its effect is not identical, in evaporator room 1, be to air heating by the former water that circulates, in condensing chamber 2, be to lower the temperature to air by recirculated cooling water, the aqueous vapor difference entrained according to the air of differing temps, and then realize evaporation and crystal process.Energy balance angle, in a working cycle, the entrained energy of aqueous vapor is transferred in condensing chamber 2 by evaporator room 1, for evaporator room 1, from secondary circulation, from tower top, enter evaporator room 1, through water distribution system, be sprayed on the filler of packing layer, and at filler, carry out abundant heat exchange with the freezing air from condensing chamber 2 entering in evaporator room 1 from a side of evaporator room 1, warm air after heat exchange carries a certain amount of aqueous vapor and goes to condensation condensing chamber 2 from evaporator room 1 opposite side, and the waste water that contains crystallisate after cooling enters in aqua storage tank in evaporator room 1, and under the effect of recycle pump, dense water is gone in tempering tank 4, the waste water that contains crystallisate enters into solid-liquid separator 3, for condensing chamber 2, recirculated cooling water is sprayed at through water distribution system on the filler of packing layer, and with from a side of condensing chamber 2, enter in condensing chamber 2 the warm air of evaporator room 1 at filler, carry out abundant heat exchange, by the freezing air after cooling, be back in evaporator room 1, the water coolant after being heated enters into the 4th circulation loop and circulates.
In addition, in the 4th circulation loop of the present utility model, adopt heat pump set 6 to lower the temperature to the cold water hot water of cooling being heated and temperature is raise, that is: utilize condensation heat release to heat former water, evaporation endothermic and condensation heat release are equivalent in theory, therefore, heat pump set 6 does not provide energy theoretically time, but in actual use, there is a small amount of power loss, and then only need supplement few energy, the energy that in the utility model, heat pump set 6 consumes comes from used heat or waste heat, comprise low-temperature circulating water, flushing cinder water, underground heat tail water, solar water, used heat wet goods, therefore, significantly reduced energy consumption, improved the utilization ratio of heat.
20% sodium-chlor strong brine is with 0.80m
3the flow of/h enters circulating treating system described in the utility model and processes, and its result is as shown in table 1: wherein, a, the b to l in table 1 corresponds respectively to sampling spot a, the b to l in Fig. 1.
The result table of table 1 sodium-chlor strong brine
Above-mentioned strong brine, after the recycle system of the present utility model and art breading, obtains every cube of required waste heat of product water and is less than 40KWh.
Embodiment 2
20% sodium sulfate strong brine is with 0.76m
3the flow of/h enters circulating treating system described in the utility model and processes, and its result is as shown in table 2: wherein, a, the b to l in table 2 corresponds respectively to sampling spot a, the b to l in Fig. 1.
The result table of table 2 sodium sulfate strong brine
Above-mentioned strong brine, after the recycle system of the present utility model and art breading, obtains every cube of required waste heat of product water and is less than 40KWh.
10% sodium-chlor and 10% sodium sulfate mixing strong brine are with 0.5m
3the flow of/h enters circulating treating system described in the utility model and processes, and its result is as shown in table 3: wherein, a, the b to l in table 3 corresponds respectively to sampling spot a, the b to l in Fig. 1.
Table 3 mixes the result table of strong brine
Above-mentioned strong brine, after the recycle system of the present utility model and art breading, obtains every cube of required waste heat of product water and is less than 40KWh.
The utility model is by preferred embodiment having carried out detailed explanation.But, by studying carefully above, the variation to each embodiment and to increase be also that one of ordinary skill in the art institute is apparent.Applicant be intended that all these variations and increase has dropped in the protection domain of the utility model claim.Similar numbering refers to similar element in the whole text.For clarity, may there is in the accompanying drawings the situation that some line, layer, element, parts or feature are amplified.
Term used herein, only for specific embodiment is illustrated, is not intended to the utility model to limit.Unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) are all identical with the utility model one of ordinary skill in the art's understanding.Also must be clear and definite, except having in this article clear and definite definition, such as the term conventionally defining in dictionary, should be interpreted as can thering is the consistent meaning in the linguistic context of this specification sheets and correlation technique, and the idealized or undue formalization that should not explain.Known function or structure are in briefly and clearly considering or repeating no more.
Claims (9)
1. the circulating treating system of a high-concentration salt-containing wastewater, it is characterized in that: comprise evaporator room, condensing chamber, solid-liquid separator, tempering tank, interchanger, heat pump set, air cooler and blower fan, wherein, described evaporator room, condensing chamber and blower fan are connected to each other and form the first circulation loop, the strong brine outlet of described evaporator room is connected with tempering tank in turn by pipeline and recycle pump, interchanger, and water side of interchanger and the tower top of evaporator room are connected to form the second circulation loop, the crystallisate outlet of described evaporator room bottom is connected with solid-liquid separator by pipeline and recycle pump, and the liquid discharge water end (W.E.) of solid-liquid separator is connected with evaporator room and is formed the 3rd circulation loop by pipeline and recycle pump, described condensing chamber is connected with condenser, interchanger, the vaporizer of heat pump set, the air cooler of heat pump set successively by pipeline and recycle pump, and the water side of air cooler and the tower top of condensing chamber are connected to form the 4th circulation loop.
2. circulating treating system according to claim 1, is characterized in that: the structure of described evaporator room and condensing chamber is identical, and its inside is disposed with water distribution system, packing layer, water-recovering device and storage tank from top to bottom.
3. circulating treating system according to claim 2, is characterized in that: described water distribution system comprises water distribution pipeline and is arranged at the water-distribution nozzle arranging on water distribution pipeline downwards.
4. circulating treating system according to claim 2, is characterized in that: on described packing layer, be provided with filler, described filler is a ripple filler.
5. circulating treating system according to claim 2, is characterized in that: the profile of described water-recovering device is V-structure.
6. circulating treating system according to claim 1, is characterized in that: the recycle pump in described the second circulation loop and the 3rd circulation loop is spiral pump, and the recycle pump in the 4th circulation loop is Ordinary Centrifugal Pumps.
7. circulating treating system according to claim 1, is characterized in that: described blower fan is axial flow frequency conversion fan.
8. circulating treating system according to claim 1, is characterized in that: described interchanger is titanium plate-type heat exchanger; Described heat pump set is lithium bromide absorption type heat pump unit.
9. according to the circulating treating system described in claim 1～8 any one, it is characterized in that: described circulating treating system also comprises realizes to whole system the PLC Controlling System that operation is controlled automatically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320587496.8U CN203545715U (en) | 2013-09-23 | 2013-09-23 | Circular treatment system of high-concentration brine waste |
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| CN201320587496.8U CN203545715U (en) | 2013-09-23 | 2013-09-23 | Circular treatment system of high-concentration brine waste |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211130A (en) * | 2014-09-16 | 2014-12-17 | 凯姆德（北京）能源环境科技有限公司 | Low-temperature evaporation, concentration and crystallization system and method using waste heat |
| CN107892347A (en) * | 2016-10-04 | 2018-04-10 | 南华大学 | A kind of high-voltage electrostatic field formula gas-liquid contact is concentrated by evaporation high-salt wastewater device and its technique |
| WO2022126670A1 (en) * | 2020-12-16 | 2022-06-23 | 淄博环能海臣环保技术服务有限公司 | Salt-containing water desalination treatment device for concentrating and crystallizing high-salt wastewater by means of heat pump |
-
2013
- 2013-09-23 CN CN201320587496.8U patent/CN203545715U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211130A (en) * | 2014-09-16 | 2014-12-17 | 凯姆德（北京）能源环境科技有限公司 | Low-temperature evaporation, concentration and crystallization system and method using waste heat |
| CN104211130B (en) * | 2014-09-16 | 2016-07-06 | 凯姆德（北京）能源环境科技有限公司 | A kind of low-temperature evaporation condensing crystallizing system and method utilizing used heat |
| CN107892347A (en) * | 2016-10-04 | 2018-04-10 | 南华大学 | A kind of high-voltage electrostatic field formula gas-liquid contact is concentrated by evaporation high-salt wastewater device and its technique |
| WO2022126670A1 (en) * | 2020-12-16 | 2022-06-23 | 淄博环能海臣环保技术服务有限公司 | Salt-containing water desalination treatment device for concentrating and crystallizing high-salt wastewater by means of heat pump |
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Granted publication date: 20140416 |