CN104984589A - Wastewater treatment device based on wet desulphurization system - Google Patents
Wastewater treatment device based on wet desulphurization system Download PDFInfo
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- CN104984589A CN104984589A CN201510391885.7A CN201510391885A CN104984589A CN 104984589 A CN104984589 A CN 104984589A CN 201510391885 A CN201510391885 A CN 201510391885A CN 104984589 A CN104984589 A CN 104984589A
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- water
- filtrate
- water tank
- wastewater treatment
- filtrate water
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000000706 filtrate Substances 0.000 claims abstract description 63
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 30
- 239000002351 wastewater Substances 0.000 claims abstract description 26
- 239000010440 gypsum Substances 0.000 claims abstract description 19
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 19
- 235000019738 Limestone Nutrition 0.000 claims abstract description 17
- 239000006028 limestone Substances 0.000 claims abstract description 17
- 230000023556 desulfurization Effects 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 17
- 239000010865 sewage Substances 0.000 claims description 14
- 239000002699 waste material Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000003317 industrial substance Substances 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 4
- 238000007701 flash-distillation Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 abstract 5
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 230000003009 desulfurizing effect Effects 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a wastewater treatment device based on a wet desulphurization system. The wastewater treatment device comprises a gypsum hydrocyclone station, a recycling water tank, a vacuum belt fulter, a filtrate water defecator, a filtrate water clean-water tank, a limestone slurry circulating tank, a main system on desulfurization waste water treatment, a pressure filter, an outer-drainage treating system and a desulfurizing absorption tower. Upper-layer clean water coming out from the gypsum hydrocyclone station flows into the recycling water tank, the recycling water tank is connected with two branches of pipelines, one branch of recycling water is sent to the desulfurizing absorption tower, and the other branch of recycling water is sent to the limestone slurry circulating tank; the lower-layer wastewater coming out from the filtrate water defecator enters into the vacuum belt fulter, the filtrate passing through the vacuum belt fulter enters into the filtrate water defecator, and wet electric wastewater and gas-flue hydrophobic are also enter into the filtrate water defecator at the same tine. The wastewater treatment device based on the wet desulphurization system has the advantages that the pollution of the wastewater is decreased, and water consumption is lowered; the adaptability and the stability are good; the technological process is easy, and investment and cost on operation and maintenance are low; the effect of the filtrate water defecator is good.
Description
Technical field
The present invention relates to wastewater treatment equipment, more specifically, it relates to a kind of wastewater treatment equipment based on wet desulfurization system.
Background technology
At present, for meeting stricter environmental requirement, many coal-burning power plants arrange Wet-type electric dust removal system (hereinafter referred to as wet electricity) after desulfuration absorbing tower.Wet electricity needs a large amount of flushing water, and after this partial flushing water washes away pole plate, flow out from ash bucket, component loops utilizes, and part is outer to be lined up as wet electric waste water.This effluent part contains more suspension (concentration is generally between 2000 ~ 4000mg/L), and pH value, between 4 ~ 6, cannot directly utilize.If enter in the waste water system of other device, certainly will increase pollution, causing water to consume increases, and destroys the water balance of miscellaneous equipment, and the equipment that affects runs.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of rational in infrastructure, reduce contaminated wastewater, reduce the wastewater treatment equipment based on wet desulfurization system of water consumption.
This wastewater treatment equipment based on wet desulfurization system, comprises gypsum rotational flow station, reuse water tank, vacuum belt dewaterer, filtrate water clarifier, filtrate water filtered water tank, lime stone slurry circulating box, desulfurization wastewater process main system, filter press, outer disintegrating system in waste pipe and desulfuration absorbing tower; Flow to reuse water tank from gypsum rotational flow station upper strata clear water out, connect two-way pipeline by reuse water tank, desulfuration absorbing tower is delivered on recycle-water one road, and lime stone slurry circulating box is delivered on another road; Vacuum belt dewaterer is entered from gypsum rotational flow station lower floor's sewage out, filtrate after vacuum belt dewaterer then enters filtrate water clarifier, wet electric waste water and flue is hydrophobic also enters filtrate water clarifier simultaneously, divide three tunnels from filtrate water clarifier liquid out, a road is overflow water, enters filtrate water filtered water tank, one tunnel is bottom sewage, enter desulfuration absorbing tower, a road is bed mud, enters filter press; Two-way is divided from filtrate water filtered water tank liquid out, one tunnel is overflow, enter lime stone slurry circulating box, another road is bottom sewage, enter wastewater treatment main system and carry out wastewater treatment, the bed mud of generation with together with filtrate water clarifier bed mud out, send into filter press, the liquid after the process of wastewater treatment main system then sends into outer disintegrating system in waste pipe, after flash distillation, be converted into salt, finally form industrial chemicals.
As preferably: increase swash plate in the middle part of described filtrate water clarifier, supernatant liquid enters swash plate from bottom, and upwards flowed clarification activities between swash plate, be furnished with the rake low rate mixing machine for spoil disposal and transmission device in bottom simultaneously.
As preferably: described filtrate water filtered water tank is the anticorrosion water tank having agitator.
The invention has the beneficial effects as follows:
1, reduce contaminated wastewater, reduce water consumption
This waste water system is simultaneously to gypsum waste water, wet electric waste water with flue is hydrophobic processes, waste water after process is delivered to respectively lime stone pulping system and desulfuration absorbing tower recovery use simultaneously, the outer draining of part then generates industrial chemicals after treatment, this system reduces and even has stopped discharge of wastewater pollution, and effectively reduces the water consumption of system.
2, adaptability and good stability
This waste water system carries out improving based on the gypsum rotational flow station system of wet desulfurization system, recycle-water system and wastewater treatment main system, and be applicable to all wet desulfurization systems, adaptability is good.When whole system tackles changeable operating mode, adaptability is good, reliable and stable.
3, technological process is simple, investment and O&M cost low
The gypsum rotational flow station system of the more original wet desulphurization of this waste water system, recycle-water system and wastewater treatment main system, decrease Filtrate separator, add filtrate water clarifier, filtrate water filtered water tank and connecting pipe, system process simple, intuitive.System capital equipment, material are conventional products, and be easy to buying, cost of investment is low.Filtrate water clarifier power is not more than 3kW, and energy consumption is lower, and system equipment is few, and pipeline is simple, and the byproduct simultaneously produced can bring certain income, and offset part O&M cost, O&M cost is low.
4, comparatively fruit is good for filtrate water clarifier
Filtrate water clarifier volume is large, and swash plate is housed, and effectively can promote clarifying effect.
Accompanying drawing explanation
Fig. 1 is present system structural representation;
Fig. 2 is single filtrate water clarifier schematic diagram;
Description of reference numerals: water inlet 1, delivery port 2, mud discharging mouth 3, transmission device 4, swash plate 5, reuse water tank 6, gypsum rotational flow station 7, vacuum belt dehydration 8, wet electric waste water and flue are hydrophobic 9, filtrate water clarifier 10, filtrate water filtered water tank 11, lime stone slurry circulating box 12, desulfuration absorbing tower 13, wastewater treatment main system 14, outer disintegrating system in waste pipe 15, filter press 16.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further.The explanation of following embodiment just understands the present invention for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
As shown in Figure 1 to Figure 2.This wastewater treatment equipment based on wet desulfurization system of the present invention, comprises gypsum rotational flow station 7, reuse water tank 6, vacuum belt dewaterer 8, filtrate water clarifier 10, filtrate water filtered water tank 11, lime stone slurry circulating box 12, desulfurization wastewater process main system 14, filter press 16, outer disintegrating system in waste pipe 15 and desulfuration absorbing tower 13; Flow to reuse water tank 6 from gypsum rotational flow station 7 upper strata clear water out, connect two-way pipeline by reuse water tank 6, desulfuration absorbing tower 13 is delivered on recycle-water one road, and lime stone slurry circulating box 12 is delivered on another road; Vacuum belt dewaterer 8 is entered from gypsum rotational flow station 7 lower floor's sewage out, filtrate after vacuum belt dewaterer 8 then enters filtrate water clarifier 10, wet electric waste water and flue is hydrophobic also enters filtrate water clarifier 10 simultaneously, divide three tunnels from filtrate water clarifier 10 liquid out, a road is overflow water, enters filtrate water filtered water tank 11, one tunnel is bottom sewage, enter desulfuration absorbing tower 13, a road is bed mud, enters filter press 16; Two-way is divided from filtrate water filtered water tank 11 liquid out, one tunnel is overflow, enter lime stone slurry circulating box 12, another road is bottom sewage, enter wastewater treatment main system 14 and carry out wastewater treatment, the bed mud of generation with together with filtrate water clarifier 10 bed mud out, send into filter press 16, the liquid after the process of wastewater treatment main system then sends into outer disintegrating system in waste pipe 15, after flash distillation, be converted into salt, finally form industrial chemicals.Increase swash plate 5 in the middle part of described filtrate water clarifier 10, supernatant liquid enters swash plate 5 from bottom, and upwards flowed clarification activities between swash plate 5, is furnished with the rake low rate mixing machine for spoil disposal and transmission device 4 in bottom simultaneously.Filtrate water filtered water tank 11 is for there being the anticorrosion water tank of agitator.
Native system with gypsum rotational flow station 7 for line of demarcation can be divided into two parts, i.e. recycle-water part and sewage disposal part, visible Fig. 1 of concrete composition of system.
(1) recycle-water part
Flow to reuse water tank 6 from gypsum rotational flow station 7 upper strata clear water out, connect two-way pipeline by reuse water tank 6, desulfuration absorbing tower 13 is delivered on recycle-water one road, and lime stone slurry circulating box 12 is delivered on another road.
(2) sewage disposal part
Flow to reuse water tank 6 from gypsum rotational flow station 7 upper strata clear water out, connect two-way pipeline by reuse water tank 6, desulfuration absorbing tower 13 is delivered on recycle-water one road, and lime stone slurry circulating box 12 is delivered on another road; Vacuum belt dewaterer 8 is entered from gypsum rotational flow station 7 lower floor's sewage out, filtrate after vacuum belt dewaterer 8 then enters filtrate water clarifier 10, wet electric waste water and flue is hydrophobic also enters filtrate water clarifier 10 simultaneously, divide three tunnels from filtrate water clarifier 10 liquid out, a road is overflow water, enters filtrate water filtered water tank 11, one tunnel is bottom sewage, enter desulfuration absorbing tower 13, a road is bed mud, enters filter press 16; Two-way is divided from filtrate water filtered water tank 11 liquid out, one tunnel is overflow, enter lime stone slurry circulating box 12, another road is bottom sewage, enter wastewater treatment main system 14 (i.e. the original wastewater treatment main system of wet desulfurization system) and carry out wastewater treatment, the bed mud produced with together with filtrate water clarifier 10 bed mud out, send into filter press 16, liquid after the process of wastewater treatment main system then sends into outer disintegrating system in waste pipe 15, after flash distillation (utilizing boiler of power plant auxiliary steam to evaporate waste water), be converted into salt, finally form industrial chemicals.
(3) filtrate water clarifier 10
The comparatively general prelimer volume about 20% to 50% used of described filtrate water clarifier 10, and middle part increases swash plate 5 in case, treat that supernatant liquid enters swash plate 5 district from bottom, clarification activities is completed in the process upwards flowed between plate, clarifying effect can be promoted further, be furnished with rake low rate mixing machine and transmission device 4 in bottom simultaneously, for spoil disposal, the visible Fig. 2 of concrete structure.
(4) wastewater treatment main system 14
The treatment additive of raw wastewater process main system 14 is Ca (OH)
2, change to NaOH in the present system, effectively can reduce the solid content in outer draining.
(5) filtrate water filtered water tank 11
Filtrate water filtered water tank 11 is one with the anticorrosion water tank of agitator, because water quality is comparatively clear, uses when this water tank normally works as transfer water tank, when there is accident conditions, when namely entering this water tank with the water of a large amount of impurity, can start agitator and preventing bed mud from depositing.This filtrate water filtered water tank 11 plays the effect of intermediate transit and storage, make the clear liquid in waste water can apply to limestone pulping, waste water advanced improvement two aspects according to operating mode, the cooperation of filtrate water clarifier 10 and filtrate water filtered water tank 11, makes system cloud gray model effectively ensure.
Claims (3)
1. based on a wastewater treatment equipment for wet desulfurization system, it is characterized in that: comprise gypsum rotational flow station (7), reuse water tank (6), vacuum belt dewaterer (8), filtrate water clarifier (10), filtrate water filtered water tank (11), lime stone slurry circulating box (12), desulfurization wastewater process main system (14), filter press (16), outer disintegrating system in waste pipe (15) and desulfuration absorbing tower (13); Reuse water tank (6) is flow to from gypsum rotational flow station (7) upper strata clear water out, two-way pipeline is connect by reuse water tank (6), desulfuration absorbing tower (13) is delivered on recycle-water one road, and lime stone slurry circulating box (12) is delivered on another road; Vacuum belt dewaterer (8) is entered from gypsum rotational flow station (7) lower floor's sewage out, filtrate after vacuum belt dewaterer (8) then enters filtrate water clarifier (10), wet electric waste water and flue is hydrophobic also enters filtrate water clarifier (10) simultaneously, three tunnels are divided from filtrate water clarifier (10) liquid out, one tunnel is overflow water, enter filtrate water filtered water tank (11), one tunnel is bottom sewage, enter desulfuration absorbing tower (13), one tunnel is bed mud, enters filter press (16); Two-way is divided from filtrate water filtered water tank (11) liquid out, one tunnel is overflow, enter lime stone slurry circulating box (12), another road is bottom sewage, enter wastewater treatment main system (14) and carry out wastewater treatment, the bed mud produced with together with filtrate water clarifier (10) bed mud out, send into filter press (16), liquid after the process of wastewater treatment main system then sends into outer disintegrating system in waste pipe (15), after flash distillation, be converted into salt, finally form industrial chemicals.
2. the wastewater treatment equipment based on wet desulfurization system according to claim 1, it is characterized in that: described filtrate water clarifier (10) middle part increases swash plate (5), supernatant liquid enters swash plate (5) from bottom, upwards flowed clarification activities between swash plate (5), is furnished with the rake low rate mixing machine for spoil disposal and transmission device (4) in bottom simultaneously.
3. the wastewater treatment equipment based on wet desulfurization system according to claim 1, is characterized in that: described filtrate water filtered water tank (11) is for there being the anticorrosion water tank of agitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391885.7A CN104984589B (en) | 2015-07-02 | 2015-07-02 | Wastewater treatment device based on wet desulphurization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510391885.7A CN104984589B (en) | 2015-07-02 | 2015-07-02 | Wastewater treatment device based on wet desulphurization system |
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| CN104984589A true CN104984589A (en) | 2015-10-21 |
| CN104984589B CN104984589B (en) | 2017-04-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120255912A1 (en) * | 2011-04-11 | 2012-10-11 | Veolia Water Solutions & Technologies Support | Process for Treating Water to be Treated by Clarification Comprising an Adsorption of a Portion of Clarified Water and a Clarification of a Mixture of Adsorbed Clarified Water and Water to be Treated |
| CN103910445A (en) * | 2012-12-31 | 2014-07-09 | 武汉光谷环保科技股份有限公司 | Desulfurization wastewater treatment device adopting efficient clarifier |
| CN204058115U (en) * | 2014-06-30 | 2014-12-31 | 武汉龙净环保工程有限公司 | Desulfurization wastewater treatment system |
| CN204798990U (en) * | 2015-07-02 | 2015-11-25 | 浙江天地环保工程有限公司 | Effluent treatment plant based on wet flue gas desulfurization system |
-
2015
- 2015-07-02 CN CN201510391885.7A patent/CN104984589B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120255912A1 (en) * | 2011-04-11 | 2012-10-11 | Veolia Water Solutions & Technologies Support | Process for Treating Water to be Treated by Clarification Comprising an Adsorption of a Portion of Clarified Water and a Clarification of a Mixture of Adsorbed Clarified Water and Water to be Treated |
| CN103910445A (en) * | 2012-12-31 | 2014-07-09 | 武汉光谷环保科技股份有限公司 | Desulfurization wastewater treatment device adopting efficient clarifier |
| CN204058115U (en) * | 2014-06-30 | 2014-12-31 | 武汉龙净环保工程有限公司 | Desulfurization wastewater treatment system |
| CN204798990U (en) * | 2015-07-02 | 2015-11-25 | 浙江天地环保工程有限公司 | Effluent treatment plant based on wet flue gas desulfurization system |
Non-Patent Citations (2)
| Title |
|---|
| 2×600 MW 超临界燃煤机组烟气脱硫工程;王冠华等;《广东化工》;20100630;第37卷(第6期);第194页左栏第3、6-8段，图1 * |
| 王冠华等: "2×600 MW 超临界燃煤机组烟气脱硫工程", 《广东化工》 * |
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Address after: No.99, Huaxing Road, Hangzhou City, Zhejiang Province (Hangzhou Neusoft venture building) Patentee after: Zhejiang Zheneng Technology Environmental Protection Group Co.,Ltd. Country or region after: China Address before: No.99, Huaxing Road, Hangzhou City, Zhejiang Province (Hangzhou Neusoft venture building) Patentee before: Zhejiang Tiandi Environmental Protection Technology Co.,Ltd. Country or region before: China |