CN105344119A - Low-temperature spray evaporation waste water treatment device and waste water treatment method - Google Patents
Low-temperature spray evaporation waste water treatment device and waste water treatment method Download PDFInfo
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Abstract
The invention discloses a low-temperature spray evaporation waste water treatment device and a waste water treatment method. The waste water treatment device comprises an evaporation concentrator and a heat exchange system, and the evaporation concentrator comprises an evaporation chamber with a waste water inlet and a condensation chamber with a pure water outlet; the evaporation chamber is communicated with the condensation chamber through a top channel and a bottom channel to form an air circulation channel, and a fan used for blowing air in the evaporation chamber into the condensation chamber is arranged in the top channel; a cold medium inlet of a heat recycling heat exchanger is connected with the evaporation chamber, and a cold medium outlet of a heat recycling heat exchanger is connected with a water distribution pipe of a water distribution layer of the evaporation chamber; a cold medium inlet of a heat release heat exchanger is connected with a pure water circulation water outlet of the condensation chamber, and a cold medium outlet of the heat release heat exchanger is connected with a hot medium inlet of the heat recycling heat exchanger; a hot medium outlet of the heat recycling heat exchanger is connected with a hot medium inlet of a heat absorption heat exchanger, and a hot medium outlet of the heat absorption heat exchanger is connected with the water distribution pipe of the water distribution layer of the condensation chamber. According to the low-temperature spray evaporation waste water treatment device and the waste water treatment method, the energy consumption is low, and the application range is wide.
Description
Technical field
The present invention relates to high concentration easy coking saliferous wastewater processing technology field, be specifically related to a kind of wastewater treatment equipment and method of wastewater treatment of low temperature spraying and sprinkling evaporation.
Background technology
Along with China's industrial expansion, the way of production of high-concentration salt-containing wastewater is increasingly extensive, and wastewater flow rate also increases year by year, creates many harm to ecological environment.For high-concentration salt-containing wastewater, industrial main utilization is before this diluted with water, discharge after biochemical treatment, adopts this type of processing mode, not only wastes a large amount of water resources, and can not control from total amount the salinity that enters in environment, be difficult to realize the effective process to waste water.
Except above-mentioned processing method, there is again other treatment technologies many in recent years, such as multiple-effect evaporation (MED), both vapor compression condensation (VC), multistage flash evaporation (MSF) etc.Multiple-effect evaporation allows the brine waste after heating evaporate in the evaporimeter of multiple series connection, and the steam of previous evaporator evaporation process is as the thermal source of next evaporimeter, and condensation becomes fresh water.Multiple-effect evaporation is one of method the most energy-conservation in the way of distillation, but its subject matter existed is: low, the easy fouling of device unit disposal ability, the easy coking of high-concentration waste water, and the high and heat transfer efficiency of the construction costs of equipment is low.Both vapor compression condensation desalination is by after brine waste preheating, enter evaporimeter and evaporate in evaporimeter inside, its indirect steam produced improves through compressor the heated side being incorporated into evaporimeter after pressure, draws, realize recycling of heat energy with this after steam-condensation as product.But, adopt this treatment process, high to the requirement of equipment material, and need in system operation to consume a large amount of heat, there is disposable input and the high shortcoming of operating cost.Multi-stage flash evaporation technology grows up for the shortcoming that coking in multiple-effect evaporation technique is comparatively serious, its appearance is just widely used and develops, there is the advantages such as equipment is simple and reliable, safety in operation is high, anti-scaling property is good, operating flexibility is large, but the deficiencies such as it is relatively high that it exists energy consumption, heat recycling rate of waterused.
Publication number is that the Chinese patent literature of CN103550941A discloses a kind of low-temperature evaporation concentration device, comprise Kano and heat EGR, an evaporation concentrator, described Kano is heated EGR and comprises the compressor, evaporimeter, expansion valve, the condenser that are connected by piping loop; The import of condenser heated side connects feed pipe; Be provided with an air circulation duct in evaporation concentrator, air circulation duct comprises a feed liquid enrichment region and a condensed water generates district, and the cold air generated in district blows to the blower fan of feed liquid enrichment region by condensed water to be provided with one bottom air circulation duct.This device waste water Kano is heated EGR heating, then under cold air, purge low-temperature evaporation, condensation obtain process water, this device does not make full use of the heat energy of material, and energy consumption is larger.
How to reduce the energy ezpenditure in evaporating concentration process, improve the recycling rate of waterused of heat energy, reduce operating cost, prevent equipment coking and blocking, the efficient stable operation realizing system and the system unit with certain versatility are those skilled in the art's problem demanding prompt solutions always.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, heat in the water purification providing a kind of utilization to steam, treating apparatus and the processing method of evaporation and concentration can be carried out at relatively low temperature to all kinds of brine waste, this device and method achieve salt and water in waste water low temperature, be efficiently separated.
For achieving the above object, the present invention adopts following embodiment:
A wastewater treatment equipment for low temperature spraying and sprinkling evaporation, described evaporation concentrator comprises the vaporization chamber with waterwater entrance, the condensation chamber with pure water inlet;
Described vaporization chamber is communicated with formation gas circulation channel respectively by top passageway with foot passage with condensation chamber, is provided with the blower fan for vaporization chamber hot-air being blowed to condensation chamber in top passageway; The top of described vaporization chamber and condensation chamber is respectively equipped with water distribution layer;
Described heat-exchange system comprises Kano and heats EGR, heat reuse heat exchanger; Described Kano is heated EGR and comprises the heat release heat exchanger and heat absorbing heat exchanger that are connected by piping loop;
The cold medium entrance of heat reuse heat exchanger is connected with vaporization chamber, and the cold media outlet of heat reuse heat exchanger is connected with the water distributor of vaporization chamber water distribution layer; The cold medium entrance of described heat release heat exchanger is connected with the water purification circulating outlet of condensation chamber, and the cold media outlet of heat release heat exchanger is connected with heat reuse exchanger heat medium entrance; Heat reuse exchanger heat media outlet is connected with heat absorbing heat exchanger thermal medium inlet; Heat absorbing heat exchanger thermal medium outlet is connected with condensation chamber water distribution layer water distributor.
The present invention is applicable to the wastewater treatment of high concentration, easily coking, high salt.
Described vaporization chamber from top to bottom comprises successively: buffering one deck, water distribution layer, evaporation layer, buffering two layers, enriched chamber;
Described condensation chamber from top to bottom comprises successively: buffering one deck, water distribution layer, condensate layer, buffering two layers, water purifying chamber;
The top passageway of described gas circulation channel is communicated with between vaporization chamber and buffering one deck of condensation chamber;
The foot passage of described gas circulation channel is communicated with between vaporization chamber and the buffering two layers of condensation chamber;
Buffering one deck of vaporization chamber is a cavity, its sidewall has air outlet, and buffering one deck of described condensation chamber is a cavity, and its sidewall has air inlet, the air outlet of vaporization chamber and the air inlet of described condensation chamber form described top passageway, and described blower fan is arranged between top passageway.As, the air outlet of vaporization chamber is connected with the air inlet of described blower fan, and the air inlet of condensation chamber is connected with fan outlet.
The buffering two layers of evaporation layer is a cavity, and its sidewall has air inlet, and the buffering two layers of condensate layer is a cavity, and its sidewall has air outlet; The air inlet of vaporization chamber and the air outlet of condensation chamber connect and compose described foot passage.
Gas is at described gas circulation channel Inner eycle under the driving of blower fan, and the wind speed of gas circulation channel is by air-blower control.
Described evaporation layer and condensate layer are respectively cavity or filler are housed.
As preferably, described filler is metal or nonmetal Pall ring.
As preferably, described vaporization chamber cushions one deck and is provided with de-bubble facility, de-bubble facility be air-flow can quickly through porous type inorganic board.
Described enriched chamber comprises dense water circulation room and dense water sedimentation room from top to bottom successively;
Described dense water circulation room is provided with dense water circulation delivery port, and dense water circulation delivery port is connected with the cold medium entrance of heat reuse heat exchanger by dense water-circulating pump;
Described dense water circulation room is also provided with waterwater entrance, is connected with waste line.
Described dense water circulation room is communicated with buffering two floor; As preferably, described dense water circulation room is the cavity that internal diameter is gradually little, and the width of its one end width and buffering two layers of bottom is identical and combine closely, and other end width is identical with dense water sedimentation room top width and combine closely.Be provided with guiding device in the cavity of dense water circulation room, described guiding device is the different open channel of two ends width.
Described dense water sedimentation indoor are provided with tilted plate separator.Salt outlet is provided with bottom dense water sedimentation room.Salt outlet by pump with adopt salt bath and be connected.
Described water purification circulating outlet is positioned at bottom water purifying chamber, and water purification circulating outlet is connected with the cold medium entrance of heat release heat exchanger by water purification circulating pump; Pure water inlet is positioned at water purifying chamber's sidewall.
The present invention also comprises a kind of method of wastewater treatment adopting the wastewater treatment equipment of above-mentioned low temperature spraying and sprinkling evaporation, comprises and passes into waste water to vaporization chamber, and waste water is back to the water distribution layer of vaporization chamber after heat reuse heat exchanger heats up as cold medium;
The hot-air of vaporization chamber is circulated to condensation chamber under the effect of blower fan, the water purification part that condensation chamber obtains is arranged outward by pure water inlet, the water distribution layer that another part enters heat release heat exchanger as cold medium successively by water purification circulating outlet, enters heat reuse heat exchanger, is back to condensation chamber as thermal medium as thermal medium after heat absorbing heat exchanger.
As preferably, described Kano is heated EGR and comprises the compressor, heat absorbing heat exchanger, expansion valve, the heat release heat exchanger that are connected by piping loop.Kano heats in the closed circuit in EGR cold-producing medium.Heat release heat exchanger thermal medium is cold-producing medium, cold medium is the water purification of condensation chamber water purification circulating outlet reuse, water purification circulating outlet is connected with the cold medium entrance of heat release heat exchanger by water purification circulating pump, the cold media outlet of heat release heat exchanger is connected with heat reuse exchanger heat medium entrance, and the water purification of reuse is back in heat reuse heat exchanger as heat source waste water after heat release heat exchanger heats up.The cold medium of heat absorbing heat exchanger is cold-producing medium, and thermal medium is the water purification after heat exchange.Heat absorbing heat exchanger thermal medium inlet is connected with heat reuse exchanger heat media outlet, and the water purification after heat exchange is through the further cooling of heat absorbing heat exchanger.Heat release heat exchanger thermal medium outlet is connected with condensation chamber water distribution layer water distributor, and further cooled waste water is back to the hot-air that condensation chamber has vaporization chamber circulation as condensing agent condensation.
The cold medium of described heat reuse heat exchanger is dense water circulation delivery port dense water out.The cold media outlet of heat reuse heat exchanger is connected with vaporization chamber water distribution layer water distributor, and the waste water pump after heat exchange heats up is to vaporization chamber low-temperature evaporation.
As preferably, described heat reuse heat exchanger is titanium plate type heat exchanger.This heat exchange efficiency put hot gas is high, and antiseptic property is good.
As preferably, be also provided with the automatic control system of whole low-temperature evaporation concentration device.
This method also comprises a kind of method of wastewater treatment adopting the wastewater treatment equipment of above-mentioned low temperature spraying and sprinkling evaporation, comprises and passes into waste water to vaporization chamber, and waste water is back to the water distribution layer of vaporization chamber after heat reuse heat exchanger heats up as cold medium;
The hot-air of vaporization chamber is circulated to condensation chamber under the effect of blower fan, the water purification part that condensation chamber obtains exports outer row by water inlet, the water distribution layer that another part enters heat release heat exchanger as cold medium successively by water purification circulating outlet, enters heat reuse heat exchanger, is back to condensation chamber as thermal medium heat absorbing heat exchanger as thermal medium.
As preferably, temperature when waste water discharges heat reuse heat exchanger as cold medium is 40 ~ 80 DEG C
Water purification is 10 ~ 40 DEG C as temperature during thermal medium discharge heat absorbing heat exchanger;
It is 25 ~ 75 DEG C that clean Water cooling medium enters the temperature before heat release heat exchanger.
Dense water (waste water) is promoted to after heat exchange is warmed up to 40 ~ 80 DEG C in heat reuse heat exchanger through pump and enters vaporization chamber spray, air-flow under the effect of blower fan in gas circulation channel forced circulation, air-flow carries aqueous vapor and heat in condensation chamber in vaporization chamber, and by the low temperature water purification spraying cooling condensation of 10 ~ 40 DEG C of lowering the temperature from heat absorbing heat exchanger, steam in the low temperature water purification absorption gas phase of spray and heat, and produce into the higher water purification of temperature (25 ~ 75 DEG C).The water purification (25 ~ 75 DEG C) that condensation chamber produces enters into Kano and heats EGR heat release heat exchanger and heat, and enters heat reuse heat exchanger afterwards as the dense water of heat source, realizes heat reuse.Water purification some heat after heat reuse heat exchanger is not utilized, afterwards, water purification enters Kano and heats EGR heat absorbing heat exchanger and reclaim heat lowering the temperature, and the water purification (10 ~ 40 DEG C) after cooling is back to as cooling medium that condensation chamber carries out spraying again, condensation.
Beneficial effect of the present invention is:
1) native system effectively make use of the heat in the water purification steamed, and therefore relative to existing brine waste treatment system, the energy consumption of native system is low, and operating cost is few.
2) be heat in the water purification steamed of low taste due to what utilize, therefore system of the present invention does not limit by region, is specially adapted to the process of the regional brine waste such as area that resource and the energy lacks relatively or remote mountain areas.
3) running temperature cold operation below 80 DEG C of vapo(u)rization system, has efficient, safe, reliable and stable advantage, and employing is that the mode sprayed is evaporated, and effectively can avoid the coking phenomenon of high-concentration waste water under the high temperature conditions on equipment.
4) in vaporization chamber steam (hot-air) out by spraying condensation in condensation chamber, can by the energy trasfer entrained by aqueous vapor in water purification, water purification after intensification enters into heat exchanger package to dense water circulation heating, and then significantly improves the recycling rate of waterused of energy.
5) native system process is thorough, any pollutant is not produced in process, the easy coking brine waste of various high concentrations through native system process, its end product is crystal salt and water purification, and crystal salt can enter next purification & isolation unit and reclaim, and water purification can direct reuse, therefore really achieve " zero-emission " of brine waste, resource and harmless treatment requirement, meanwhile, in processing procedure, do not produce any waste gas, any gas is not discharged in air, free from environmental pollution.
6) without high-temperature high-pressure apparatus, entire system cost is low, safe and reliable to operation and intelligent.
Accompanying drawing explanation
Fig. 1 is the device structure schematic diagram of the wastewater treatment equipment of low temperature spraying and sprinkling evaporation of the present invention;
Fig. 2 is the structural representation that Kano of the present invention heats EGR.
Detailed description of the invention
Following examples are pressed aforesaid operations method and are implemented:
Below in conjunction with drawings and the specific embodiments, the specific embodiment of the present invention is described further.
As shown in Figure 1, 2, the wastewater treatment equipment of low temperature spraying and sprinkling evaporation of the present invention, comprises evaporation concentrator and heat-exchange system, and heat-exchange system comprises Kano and heats EGR 10, heat reuse heat exchanger 11;
Kano is heated EGR 10 and comprises the compressor 22, heat absorbing heat exchanger 23, expansion valve 24, the heat release heat exchanger 21 that are connected by piping loop, and Kano heats in the closed circuit in EGR cold-producing medium.
Evaporation concentrator comprises vaporization chamber 4, condensation chamber 7;
Vaporization chamber 4 from top to bottom comprises successively: buffering one deck, water distribution layer, evaporation layer, buffering two layer 2, enriched chamber;
Condensation chamber 7 from top to bottom comprises successively: buffering one deck, water distribution layer, condensate layer 8, buffering two layers, water purifying chamber;
Vaporization chamber 4 is communicated with formation gas circulation channel respectively by top passageway with foot passage with condensation chamber 7, is provided with the blower fan 6 for vaporization chamber 4 hot-air being blowed to condensation chamber 7 in top passageway;
The top passageway of gas circulation channel is communicated with between vaporization chamber 4 and buffering one deck of condensation chamber 7;
The foot passage of gas circulation channel is communicated with between vaporization chamber 4 and the buffering two layers of condensation chamber 7;
Buffering one deck of vaporization chamber 4 is a cavity, and vaporization chamber 4 cushions one deck and is provided with de-bubble facility, de-bubble facility be air-flow can quickly through porous type inorganic board.The sidewall of buffering one deck has air outlet, and buffering one deck of condensation chamber 7 is a cavity, and its sidewall has air inlet, and the air outlet of vaporization chamber 4 and the air inlet of condensation chamber 7 form top passageway, and blower fan 6 is arranged between top passageway.As, the air outlet of vaporization chamber 4 is connected with the air inlet of blower fan 6, and the air inlet of condensation chamber 7 is connected with blower fan 6 air outlet.
The buffering two layers of evaporation layer is a cavity, and its sidewall has air inlet 5, and the buffering two layers of condensate layer 8 is a cavity, and its sidewall has air outlet; The air inlet 5 of vaporization chamber 4 connects and composes foot passage with the air outlet of condensation chamber 7.
Gas is gas circulation channel Inner eycle under the driving of blower fan 6, and the wind speed of gas circulation channel is controlled by blower fan 6.
Evaporation layer and condensate layer 8 are respectively cavity or filler are housed.Filler is metal or nonmetal Pall ring.
Enriched chamber comprises dense water circulation room and dense water sedimentation room 3 from top to bottom successively.Dense water circulation room is communicated with buffering two floor 2; Dense water circulation room is the cavity that internal diameter is gradually little, and the width of bottom that its one end width and buffering are two layer 2 is identical and combine closely, and other end width is identical with dense water sedimentation room 3 top width and combine closely.Be provided with guiding device in the cavity of dense water circulation room, guiding device is the different open channel of two ends width.Tilted plate separator is provided with in dense water sedimentation room 3.Salt outlet is provided with bottom dense water sedimentation room 3.Salt outlet by pump 13 with adopt salt bath 14 and be connected.
Dense water circulation room is provided with dense water circulation delivery port, and dense water circulation room is also provided with waterwater entrance, and waste line is connected with waterwater entrance by pump 1.
Dense water circulation delivery port is connected with the cold medium entrance of heat reuse heat exchanger 11 by dense water-circulating pump; The cold media outlet of heat reuse heat exchanger 11 is connected with the water distributor of vaporization chamber 4 water distribution layer.
Pure water inlet is positioned at water purifying chamber's sidewall, and pure water inlet is connected with pump 9, by pump 9 extraction water purification.Water purification circulating outlet is positioned at bottom water purifying chamber, and water purification circulating outlet is connected with the cold medium entrance of heat release heat exchanger 21 by water purification circulating pump 12.
The cold media outlet of heat release heat exchanger 21 is connected with heat reuse heat exchanger 11 thermal medium inlet; Heat reuse heat exchanger 11 thermal medium outlet is connected with heat absorbing heat exchanger 23 thermal medium inlet; Heat absorbing heat exchanger 23 thermal medium outlet is connected with condensation chamber 7 water distribution layer water distributor.
Adopt the method for wastewater treatment of the wastewater treatment equipment of the low temperature spraying and sprinkling evaporation of this invention, pass into waste water to vaporization chamber 4, waste water is back to the water distribution layer of vaporization chamber 4 after heat reuse heat exchanger 11 heats up as cold medium;
The hot-air of vaporization chamber 4 is circulated to condensation chamber 7 under the effect of blower fan 6, the water purification part that condensation chamber 7 obtains is arranged outward by pure water inlet, the water distribution layer that another part enters heat release heat exchanger 21 as cold medium successively by water purification circulating outlet, enters heat reuse heat exchanger 11, is back to condensation chamber 7 as thermal medium as thermal medium after heat absorbing heat exchanger 23.
Heat release heat exchanger 21 thermal medium is cold-producing medium, cold medium is the water purification of the water purification circulating outlet reuse of condensation chamber 7, the cold medium entrance of heat release heat exchanger 21 is connected with water purification circulating pump 12 delivery port, the cold media outlet of heat release heat exchanger 21 is connected with heat reuse heat exchanger 11 thermal medium inlet, and the water purification of reuse is back in heat reuse heat exchanger 11 as heat source waste water after heat release heat exchanger 21 heats up.The cold medium of heat absorbing heat exchanger 23 is cold-producing medium, thermal medium is the water purification after heat exchange, heat absorbing heat exchanger 23 thermal medium inlet is connected with heat reuse heat exchanger 11 thermal medium outlet, water purification after heat exchange is through the further cooling of heat absorbing heat exchanger 23, heat release heat exchanger 21 thermal medium outlet is connected with condensation chamber 7 water distribution layer water distributor, and further cooled waste water is back to the hot-air that condensation chamber 7 has vaporization chamber 4 circulation as condensing agent condensation.
The cold medium of heat reuse heat exchanger 11 is dense water circulation delivery port dense water out.The cold media outlet of heat reuse heat exchanger 11 is connected with vaporization chamber 4 water distribution layer water distributor, and the waste water pump after heat exchange heats up is to vaporization chamber 4 low-temperature evaporation.
Dense water (waste water) is promoted to through pump and enters vaporization chamber 4 after heat exchange is warmed up to 40 ~ 80 DEG C in heat reuse heat exchanger 11 and spray, air-flow under the effect of blower fan 6 in gas circulation channel forced circulation, air-flow carries aqueous vapor and heat in condensation chamber 7 in vaporization chamber 4, and by the low temperature water purification spraying cooling condensation of 10 ~ 40 DEG C of lowering the temperature from heat absorbing heat exchanger 23, steam in the low temperature water purification absorption gas phase of spray and heat, and produce into the higher water purification of temperature (25 ~ 75 DEG C).
The water purification (25 ~ 75 DEG C) that condensation chamber 7 produces enters into Kano and heats EGR 10 heat release heat exchanger 21 and heat, and enters heat reuse heat exchanger 11 afterwards as the dense water of heat source, realizes heat reuse.Water purification some heat after heat reuse heat exchanger 11 is not utilized, afterwards, water purification enters Kano and heats EGR 10 heat absorbing heat exchanger 23 and reclaim heat and lower the temperature, and the water purification (10 ~ 40 DEG C) after cooling is back to as cooling medium that condensation chamber 7 carries out spraying again, condensation.
Claims (10)
1. a wastewater treatment equipment for low temperature spraying and sprinkling evaporation, comprises evaporation concentrator and heat-exchange system, it is characterized in that: described evaporation concentrator comprises the vaporization chamber with waterwater entrance, the condensation chamber with pure water inlet;
Described vaporization chamber is communicated with formation gas circulation channel respectively by top passageway with foot passage with condensation chamber, is provided with the blower fan for vaporization chamber hot-air being blowed to condensation chamber in top passageway; The top of described vaporization chamber and condensation chamber is respectively equipped with water distribution layer;
Described heat-exchange system comprises Kano and heats EGR, heat reuse heat exchanger; Described Kano is heated EGR and comprises the heat release heat exchanger and heat absorbing heat exchanger that are connected by piping loop;
The cold medium entrance of heat reuse heat exchanger is connected with vaporization chamber, and the cold media outlet of heat reuse heat exchanger is connected with the water distributor of vaporization chamber water distribution layer; The cold medium entrance of described heat release heat exchanger is connected with condensation chamber water purification circulating outlet, and the cold media outlet of heat release heat exchanger is connected with heat reuse exchanger heat medium entrance; Heat reuse exchanger heat media outlet is connected with heat absorbing heat exchanger thermal medium inlet; Heat absorbing heat exchanger thermal medium outlet is connected with condensation chamber water distribution layer water distributor.
2. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 1, is characterized in that:
Described vaporization chamber from top to bottom comprises successively: buffering one deck, water distribution layer, evaporation layer, buffering two layers, enriched chamber;
Described condensation chamber from top to bottom comprises successively: buffering one deck, water distribution layer, condensate layer, buffering two layers, water purifying chamber;
The top passageway of described gas circulation channel is communicated with between vaporization chamber and buffering one deck of condensation chamber;
The foot passage of described gas circulation channel is communicated with between vaporization chamber and the buffering two layers of condensation chamber;
Described evaporation layer and condensate layer are respectively cavity or filler are housed.
3. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 2, is characterized in that: described enriched chamber comprises dense water circulation room and dense water sedimentation room from top to bottom successively;
Described dense water circulation room is provided with dense water circulation delivery port, and dense water circulation delivery port is connected with the cold medium entrance of heat reuse heat exchanger by dense water-circulating pump;
Described dense water circulation room is also provided with waterwater entrance, is connected with waste line.
4. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 3, is characterized in that: from top to bottom internal diameter is gradually little in described dense water circulation room, is provided with salt outlet bottom dense water sedimentation room.
5. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 3, is characterized in that: described dense water sedimentation indoor are provided with tilted plate separator.
6. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 1, is characterized in that: described water purification circulating outlet is positioned at bottom water purifying chamber, and water purification circulating outlet is connected with the cold medium entrance of heat release heat exchanger by water purification circulating pump; Pure water inlet is positioned at water purifying chamber's sidewall.
7. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 2, is characterized in that: described filler is metal or nonmetal Pall ring.
8. the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 1, is characterized in that: described heat reuse heat exchanger is titanium plate type heat exchanger.
9. the method for wastewater treatment of the wastewater treatment equipment of low temperature spraying and sprinkling evaporation according to claim 1, is characterized in that, comprise and pass into waste water to vaporization chamber, and waste water is back to the water distribution layer of vaporization chamber after heat reuse heat exchanger heats up as cold medium;
The hot-air of vaporization chamber is circulated to condensation chamber under the effect of blower fan, the water purification part that condensation chamber obtains is arranged outward by pure water inlet, the water distribution layer that another part enters heat release heat exchanger as cold medium successively by water purification circulating outlet, enters heat reuse heat exchanger, is back to condensation chamber as thermal medium as thermal medium after heat absorbing heat exchanger.
10. method of wastewater treatment according to claim 9, is characterized in that:
Waste water is 40 ~ 80 DEG C as temperature during cold medium discharge heat reuse heat exchanger
Water purification is 10 ~ 40 DEG C as temperature during thermal medium discharge heat absorbing heat exchanger;
It is 25 ~ 75 DEG C that clean Water cooling medium enters the temperature before heat release heat exchanger.
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| CN106006806A (en) * | 2016-07-22 | 2016-10-12 | 株洲三特环保节能有限公司 | Hot air and tubular heater combined waste acid concentration treatment method and device |
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| CN109734147A (en) * | 2019-03-04 | 2019-05-10 | 中山地通光纤科技有限公司 | A kind of water process evaporation reclamation set |
| CN111153543A (en) * | 2020-02-25 | 2020-05-15 | 中国华能集团清洁能源技术研究院有限公司 | Energy-saving zero-emission low-temperature normal-pressure evaporative crystallization system and working method thereof |
| CN111974015A (en) * | 2020-09-15 | 2020-11-24 | 江西臻强新能源有限公司 | Negative pressure concentration total heat type evaporation recovery system |
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| CN112225274A (en) * | 2020-10-26 | 2021-01-15 | 清华大学 | Circulating evaporation cooling water purification system |
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