CN102795687B - Wastewater zero discharging evaporation system and process - Google Patents
Wastewater zero discharging evaporation system and process Download PDFInfo
- Publication number
- CN102795687B CN102795687B CN201210311907.0A CN201210311907A CN102795687B CN 102795687 B CN102795687 B CN 102795687B CN 201210311907 A CN201210311907 A CN 201210311907A CN 102795687 B CN102795687 B CN 102795687B
- Authority
- CN
- China
- Prior art keywords
- collecting tank
- flue
- heat exchange
- communicated
- gas collecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a wastewater zero discharging evaporation system and process. The wastewater zero discharging evaporation system comprises a vapor collecting tank, a heat exchanging element and a sewage discharging tank, wherein the vapor collecting tank is arranged above a flue; a wastewater supplying pipeline and a vapor discharging pipeline are respectively arranged on the vapor collecting tank; the sewage discharging tank is arranged below the flue; a sewage discharging pipeline is arranged at the bottom of the sewage discharging tank; the heat exchanging element is arranged in the flue or a flue heat insulating layer; a runner inlet of the heat exchanging element is communicated with the vapor collecting tank; a runner outlet of the heat exchanging element is communicated with the sewage discharging tank; wastewater absorbs the heat of flue gas in the flue during flowing in a runner of the heat exchanging element and the heat is evaporated into water vapors to enter the vapor collecting tank; and the water vapors in the vapor collecting tank are discharged out by the vapor discharging pipeline. According to the invention, as pre-treated wastewater is evaporated by using waste heat of the flue gas and the evaporated water vapor is recycled or discharged into atmosphere, enterprises do not discharge wastewater containing pollutants but discharge clean water, so that environmental pollution cannot be caused and a wastewater zero discharging purpose is really achieved.
Description
Technical field
The invention belongs to technical field of waste water processing, be specifically related to a kind of wastewater zero discharge vapo(u)rization system and technique.
Background technology
Waste water alkalinisation treatment is generally passed through in wastewater treatment at present, the processing of organic sulfide precipitation of heavy metals, the flocculation of suspended substance, precipitated metal thing, sedimentation are processed and last concentrate/clarifying treatment, waste water after treatment still contains a small amount of heavy metal, metal ion and rich negatively charged ion, as mercury ion, cadmium ion, chromium ion, arsonium ion, Cl
-, F
-deng, this part waste water generally directly discharges, and therefore will inevitably cause certain pollution to physical environment.
Although current waste water, after traditional technology is processed, generally has small portion for art breading such as dry ash humidification, coal yard humidifications, this part water consumption is little, can not meet a large amount of wastewater treatment of system, major part need to directly be drained into physical environment, therefore, can not realize wastewater zero discharge.
Summary of the invention
In view of this, the invention provides a kind of wastewater zero discharge vapo(u)rization system and technique, can not discharge the waste water that contains pollutent, realize the object of wastewater zero discharge.
The invention discloses a kind of wastewater zero discharge vapo(u)rization system, comprise gas collecting tank, heat exchange element and blowdown drum, described gas collecting tank is arranged on flue top, on gas collecting tank, be respectively equipped with waste water feedwater piping and blow-off line, described blowdown drum is arranged on flue below, and blowdown drum bottom is provided with blow-off line, and described heat exchange element is arranged in flue or in flue layer, the runner import of heat exchange element is communicated with gas collecting tank, and runner exit is communicated with blowdown drum.
Further, also comprise the female pipe of heat exchange and manifold, the female pipe of described heat exchange is arranged on flue top and is communicated with gas collecting tank, and described manifold is arranged on flue bottom and is communicated with blowdown drum, the runner import of described heat exchange element is communicated with the female pipe of heat exchange, and runner exit is communicated with manifold.
Further, also comprise filling pipe, described filling pipe one end is communicated with gas collecting tank, and the other end is communicated with blowdown drum.
Further, described heat exchange element is heat exchanger plates or heat transfer tube.
The invention also discloses a kind of waste water evaporation technology that uses above-mentioned wastewater zero discharge vapo(u)rization system, pass in gas collecting tank through pretreated waste water, waste water in gas collecting tank is from flowing in heat exchange element, when waste water flows in the runner of heat exchange element, the heat of vaporization that absorbs flue gas in flue becomes water vapor to enter gas collecting tank, water vapor in gas collecting tank is discharged by blow-off line, and after waste water evaporation, remaining throw out enters blowdown drum, and the mud of blowdown drum bottom is discharged by blow-off line.
Beneficial effect of the present invention is: the present invention arranges wastewater zero discharge vapo(u)rization system on flue, utilize the discarded heat of afterbody discharge flue gas of the systems such as enterprise's boiler, sinter machine, rotary kiln to carry out evaporation process to pretreated waste water, water vapor after evaporation re-uses or enters atmosphere, the waste water that enterprise is not discharged contain pollutent but discharge clean water, can not cause environmental pollution, thereby really realize the object of wastewater zero discharge.
Brief description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the structural representation of the embodiment of the present invention 2;
Fig. 4 is the B-B cross-sectional schematic of Fig. 3.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
embodiment 1
Fig. 1 is the structural representation of the embodiment of the present invention 1, Fig. 2 is the A-A cross-sectional schematic of Fig. 1, as shown in the figure, the wastewater zero discharge vapo(u)rization system of the present embodiment, comprise gas collecting tank 1, heat exchange element 2 and blowdown drum 3, described gas collecting tank 1 is arranged on flue 4 tops, on gas collecting tank 1, be respectively equipped with waste water feedwater piping 5 and blow-off line 6, described blowdown drum 3 is arranged on flue 4 belows, blowdown drum 3 bottoms are provided with blow-off line 7, described heat exchange element 2 is arranged in flue layer 8, and the runner import of heat exchange element 2 is communicated with gas collecting tank 1, and runner exit is communicated with blowdown drum 3.
As a further improvement on the present invention, also comprise the female pipe 9 of heat exchange and manifold 10, the female pipe 9 of described heat exchange is arranged on flue 4 tops and is communicated with gas collecting tank 1, described manifold 10 is arranged on flue 4 bottoms and is communicated with blowdown drum 3, the runner import of described heat exchange element 2 is communicated with the female pipe 9 of heat exchange, and runner exit is communicated with manifold 10; The runner import of heat exchange element 2 is communicated with gas collecting tank 1 by the female pipe 9 of heat exchange, and runner exit is communicated with blowdown drum 3 by manifold 10, is distribution and sedimentary collecting for the ease of waste water.
As a further improvement on the present invention, also comprise filling pipe 11, described filling pipe 11 one end are communicated with gas collecting tank 1, and the other end is communicated with blowdown drum 3; When waste water flows in the runner of heat exchange element 2, the water yield is more and more less because of evaporation, and filling pipe 11 is set can, from the direct amount of makeup water of gas collecting tank 1, improve the vaporization efficiency of heat exchange element 2.
Described heat exchange element 2 can be various wall-type heat exchange elements, such as heat exchanger plates, heat transfer tube etc.
Use the waste water evaporation technology of the wastewater zero discharge vapo(u)rization system of the present embodiment, pass in gas collecting tank 1 by waste water feedwater piping 5 through pretreated waste water, waste water in gas collecting tank 1 flows in heat exchange element 2 certainly by the female pipe 9 of heat exchange, when waste water flows in the runner of heat exchange element 2, in absorption flue 4, the heat (by flue layer 8 transferring heat) of flue gas flashes to water vapor and enters gas collecting tank 1, water vapor in gas collecting tank 1 is discharged by blow-off line 6, after waste water evaporation, remaining throw out enters blowdown drum 3 by manifold 10, the mud of blowdown drum 3 bottoms is discharged by blow-off line 7.
embodiment 2
Fig. 3 is the structural representation of the embodiment of the present invention 2, Fig. 4 is the B-B cross-sectional schematic of Fig. 3, as shown in the figure, the wastewater zero discharge vapo(u)rization system of the present embodiment and the difference of embodiment 1 are the set-up mode of heat exchange element 2, in the present embodiment, described heat exchange element 2 is arranged in flue 4, and when waste water flows in the runner of heat exchange element 2, the heat of vaporization that directly absorbs flue gas in flue 4 becomes water vapor to enter gas collecting tank 1.
In actual applications, the heat exchange element set-up mode of embodiment 1 and embodiment 2 can use separately one, also can use by mix and match.
The present invention arranges wastewater zero discharge vapo(u)rization system on flue, utilize the discarded heat of afterbody discharge flue gas of the systems such as enterprise's boiler, sinter machine, rotary kiln to carry out evaporation process to pretreated waste water, water vapor after evaporation re-uses or enters atmosphere, the waste water that enterprise is not discharged contain pollutent but discharge clean water, can not cause environmental pollution, thereby really realize the object of wastewater zero discharge.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by with reference to the preferred embodiments of the present invention, invention has been described, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (3)
1. a wastewater zero discharge vapo(u)rization system, it is characterized in that: comprise gas collecting tank (1), heat exchange element (2) and blowdown drum (3), described gas collecting tank (1) is arranged on flue (4) top, on gas collecting tank (1), be respectively equipped with waste water feedwater piping (5) and blow-off line (6), described blowdown drum (3) is arranged on flue (4) below, blowdown drum (3) bottom is provided with blow-off line (7), described heat exchange element (2) is arranged in flue (4) or in flue layer (8), the runner import of heat exchange element (2) is communicated with gas collecting tank (1), runner exit is communicated with blowdown drum (3), described heat exchange element (2) is heat exchanger plates or heat transfer tube, also comprise the female pipe of heat exchange (9) and manifold (10), the female pipe of described heat exchange (9) is arranged on flue (4) top and is communicated with gas collecting tank (1), described manifold (10) is arranged on flue (4) bottom and is communicated with blowdown drum (3), the runner import of described heat exchange element (2) is communicated with the female pipe of heat exchange (9), and runner exit is communicated with manifold (10).
2. wastewater zero discharge vapo(u)rization system according to claim 1, is characterized in that: also comprise filling pipe (11), described filling pipe (11) one end is communicated with gas collecting tank (1), and the other end is communicated with blowdown drum (3).
3. right to use requires the waste water evaporation technology of the wastewater zero discharge vapo(u)rization system described in 1 or 2, it is characterized in that: pass in gas collecting tank (1) through pretreated waste water, waste water in gas collecting tank (1) is from flowing in heat exchange element (2), when waste water flows in the runner of heat exchange element (2), the heat of vaporization that absorbs flue gas in flue (4) becomes water vapor to enter gas collecting tank (1), water vapor in gas collecting tank (1) is discharged by blow-off line (6), after waste water evaporation, remaining throw out enters blowdown drum (3), the mud of blowdown drum (3) bottom is discharged by blow-off line (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210311907.0A CN102795687B (en) | 2012-08-29 | 2012-08-29 | Wastewater zero discharging evaporation system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210311907.0A CN102795687B (en) | 2012-08-29 | 2012-08-29 | Wastewater zero discharging evaporation system and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102795687A CN102795687A (en) | 2012-11-28 |
| CN102795687B true CN102795687B (en) | 2014-07-30 |
Family
ID=47195033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210311907.0A Active CN102795687B (en) | 2012-08-29 | 2012-08-29 | Wastewater zero discharging evaporation system and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102795687B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007142A (en) * | 2016-07-01 | 2016-10-12 | 福建龙净环保股份有限公司 | Desulfurization wastewater zero discharge treatment system |
| CN105944548B (en) * | 2016-07-05 | 2019-01-29 | 山东能工低碳科技有限公司 | A kind of desulfurizing tower gas approach and system with desulfurization wastewater concentrating function |
| CN107140704A (en) * | 2017-06-23 | 2017-09-08 | 四川奥恒环保科技有限公司 | Contaminated water evaporator with energy-saving function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843946A (en) * | 2006-04-29 | 2006-10-11 | 北京朗新明环保科技有限公司 | Apparatus and method for treating concentrated water |
| CN101417827A (en) * | 2007-10-26 | 2009-04-29 | 余乐 | Technique method for processing desulphurization waste water |
| CN101792191A (en) * | 2010-03-11 | 2010-08-04 | 何宗彦 | Internal-combustion engine assisted sea water desalinization/poor-quality water purification method and device thereof |
| CN101844819A (en) * | 2010-05-21 | 2010-09-29 | 重庆大学 | Spray evaporation treatment method of wet method flue gas desulfurization wastewater in thermal power station |
-
2012
- 2012-08-29 CN CN201210311907.0A patent/CN102795687B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843946A (en) * | 2006-04-29 | 2006-10-11 | 北京朗新明环保科技有限公司 | Apparatus and method for treating concentrated water |
| CN101417827A (en) * | 2007-10-26 | 2009-04-29 | 余乐 | Technique method for processing desulphurization waste water |
| CN101792191A (en) * | 2010-03-11 | 2010-08-04 | 何宗彦 | Internal-combustion engine assisted sea water desalinization/poor-quality water purification method and device thereof |
| CN101844819A (en) * | 2010-05-21 | 2010-09-29 | 重庆大学 | Spray evaporation treatment method of wet method flue gas desulfurization wastewater in thermal power station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102795687A (en) | 2012-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107162084B (en) | Saline water treatment system with front heat exchanger and rear dust remover and method thereof | |
| CN107777820B (en) | Process for applying waste heat of exhaust steam of air cooling island to zero discharge treatment of wastewater of thermal power plant | |
| CN105712557A (en) | Desulfurization waste water zero discharging treatment device and method | |
| CN205953746U (en) | Zero discharge system of coal fired power plant waste water | |
| CN107857321B (en) | Process for zero discharge treatment of wastewater of thermal power plant | |
| CN203878017U (en) | Desulfurization wastewater reuse device for power plant | |
| CN209974506U (en) | Wet flue gas desulfurization waste water concentration decrement system | |
| CN105585197A (en) | Desulfurization wastewater concentration treatment device and method | |
| AU2015264783A1 (en) | Device and method for treatment and recycle of desulfurization wastewater based on plate-type multi-stage flash | |
| CN203656903U (en) | Boiler blow-down drainage waste heat cascade utilization device | |
| CN105502540A (en) | Anti-scaling and anti-corrosion desulfurization waste water multi-effect evaporation, concentration and crystallization method | |
| CN106430387A (en) | Low-temperature exhaust heat concentration system and method utilizing wastewater of thermal power plant | |
| CN204122439U (en) | For the city garbage burning flying ash resource pretreatment system of cement producting material | |
| CN206142861U (en) | Concentrated system of thermal power plant's waste water low temperature waste heat | |
| CN106630259A (en) | Terminal wastewater zero discharging system and method of power plant | |
| CN104341072A (en) | Energy-saving waste-water continuous evaporating crystallizing system | |
| CN102795687B (en) | Wastewater zero discharging evaporation system and process | |
| CN106517628A (en) | Desulfurization-wastewater zero discharging device for coal-fired power plant | |
| CN202358984U (en) | Ash sluicing water treatment and cyclic utilization system for dry pulverized coal gasification device | |
| CN203700098U (en) | Device for treating power plant waste water with steam waste heat of thermal power plant | |
| KR20150060723A (en) | Method for recovering process wastewater from a steam power plant | |
| CN101816882A (en) | The lime method mine water is handled useless underflow as wet desulphurization absorbent | |
| CN104671315B (en) | A kind of method and system of full factory waste water zero discharge | |
| CN205635216U (en) | Concentrated processing apparatus of desulfurization waste water | |
| CN105502792A (en) | Zero-discharge treatment method of desulfurization waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |