CN108002500A - Cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and application - Google Patents

Cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and application Download PDF

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CN108002500A
CN108002500A CN201711385164.0A CN201711385164A CN108002500A CN 108002500 A CN108002500 A CN 108002500A CN 201711385164 A CN201711385164 A CN 201711385164A CN 108002500 A CN108002500 A CN 108002500A
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cyclone
flue gas
pipe
height
coal
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CN108002500B (en
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段翠佳
李宗慧
王珍
邹重恩
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CHINA HUADIAN SCIENCE AND TECHNOLOGY INSTITUTE Co Ltd
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CHINA HUADIAN SCIENCE AND TECHNOLOGY INSTITUTE Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
    • C02F1/12—Spray evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Cyclones (AREA)

Abstract

The present invention provides a kind of cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and application.Described device includes babinet (1), box house centre position sets cyclone coagulation pipe (2) and inner cylinder (3), cyclone coagulation pipe, which is arranged on the bottom of box and extends upwardly to its top edge, to be located inside inner cylinder, and do not contacted with casing top, the inner cylinder is arranged on casing top and extends downwardly, and its bottom margin is not contacted with babinet；The outer wall that the part of inner cylinder is stretched into cyclone coagulation pipe sets eddy flow guide plate (4), and swirl vane (5) is set inside cyclone coagulation pipe；The bottom of box outwards sets water inlet pipe (6), and water inlet pipe is connected with cyclone coagulation pipe；The edge of casing top sets overflow launder (8).The system comprises：The water softening device (101) being linked in sequence with pipeline, cyclone-flocculation device (102), filter (103), preconcentrator (104), preheater (105), membrane distiller (106) and evaporating column (107).

Description

Cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and application
Technical field
The present invention relates to waste water from power plant field, and specifically, the present invention relates to a kind of cyclone-flocculation device and fire coal The high turbid wastewater processing system of power plant's high salt and application.
Background technology
With a series of appearance of discharge of wastewater management policies such as dampening ten, coal-burning power plant's wastewater zero discharge correlation technique Increasingly attract attention and pay attention to, coal-burning power plant's wastewater zero discharge is inexorable trend.Under existence conditions, in coal-burning power plant part High slat-containing wastewater remains difficult to realize near-zero release, wherein most intractable is exactly the production of Limestone-gypsum Wet Flue Gas Desulfurization Process operational process Raw desulfurization wastewater.Not only solid content contains greatly but also in water a large amount of calcium, magnesium, sulfate radical, chlorion etc. to desulfurization wastewater, and power plant is existing The three traditional header treatment process sections having remove most of particle and micro heavy in water removal, but can not go in water removal Salinity, the desulfurization wastewater handled through three headers is still high slat-containing wastewater not up to standard.In addition, in north water deficit area, water quality compared with Difference, salt content is higher in water, and circulating cooling tower discharge water salt content is higher.In order to recycle freshwater resources, reduce strong brine discharge Amount, coal-burning power plant is handled by the way of concentrated water discharge, fresh water reuse after concentration cycles cooling water more, and concentration cycles are cold But the processing of water is also a great problem.
The technical solution on coal-burning power plant's brine waste zero emission mainly has two kinds at present：First, pretreatment+concentration+steaming Hair crystallization；Second, pretreatment+concentration (or not concentrating)+flue evaporation.Generally, the preprocessing process of two schemes first is more Using three traditional header treatment technologies, though can reach the effect of removing heavy metals coagulated particles, flocculation and is set dosage Standby volume is all larger.Secondly Waste water concentrating process is reverse osmosis frequently with reverse osmosis, high pressure be reverse osmosis and the mode such as multiple-effect evaporation Limited by itself application conditions, can only be by Waste water concentrating to 5% or so, high pressure is reverse osmosis at most also to can only achieve 13% left side The right side, and the reverse osmosis energy consumption of high pressure significantly raises.For disposed of in its entirety technique, present power plant effluent zero-emission is more using side Case one, operation relative maturity are stablized, but whole evaporation crystallization equipment is complicated, investment is big, and evaporation process needs volume Outer introducing high temperature heat source, energy consumption are very high.Flue evaporation technique is the hot spot studied now, it has, and equipment is simple, invests Less, low power consumption and other advantages, have also been applied in some power plant, and there are some urgent problems for the present page of the technology：How Prevent spray evaporation process to the corrosion and scaling of walling of flue and the security risk that may be brought to electric precipitation.
The content of the invention
It is an object of the present invention to provide a kind of cyclone-flocculation device；
Another object of the present invention is to provide a kind of coal-burning power plant's high salt high turbid wastewater processing system；
It is still another object of the present invention to provide a kind of processing method of the high turbid wastewater of coal-burning power plant's high salt.
In order to achieve the above object, on the one hand, the present invention provides a kind of cyclone-flocculation device, wherein, described device includes envelope Babinet 1, box house centre position setting cyclone coagulation pipe 2 and inner cylinder 3, the cyclone coagulation pipe closed is arranged on the bottom of box And extend upwardly to its top edge and be located inside inner cylinder, and do not contacted with its top edge and casing top with casing top Between form water stream channel, the inner cylinder is arranged on casing top and extends downwardly, and its bottom margin do not contacted with babinet with Water stream channel is formed between its bottom margin and cabinet wall；The outer wall that the part of inner cylinder is stretched into cyclone coagulation pipe sets rotation Conductance plate 4, sets swirl vane 5 inside cyclone coagulation pipe；The bottom of box outwards sets water inlet pipe 6, and drainpipe is mixed with eddy flow Solidifying pipe connection；The edge of casing top sets overflow launder 8.
Some specific embodiments according to the present invention, wherein, the quantity of eddy flow guide plate is 6-8.
Some specific embodiments according to the present invention, wherein, the height of eddy flow guide plate stretches into inner cylinder for cyclone coagulation pipe The 1/6-1/3 of Partial Height.
Some specific embodiments according to the present invention, wherein, downflow weir 81 is formed on the outside of overflow launder.
Some specific embodiments according to the present invention, wherein, overflow launder is 1-3, and each length is casing top girth 1/4-1.
Some specific embodiments according to the present invention, wherein, height of weir plate is the 1/2-1/5 of isopipe width.
Some specific embodiments according to the present invention, wherein, the height of the cyclone coagulation pipe 2 is the 2/3- of box height 9/10, the cyclone coagulation pipe 2 includes the first straight pipe 21 and the extension diameter section 22 of handstand truncated cone-shaped；First straight pipe it is upper Edge is equal with the diameter of the lower edge of extension diameter section and is connected with each other, the diameter of the extension diameter section top edge and the diameter of lower edge Than for (1.5~3)：1, the height of the extension diameter section and the diameter ratio of extension diameter section top edge are 2/1-4/1.
Some specific embodiments according to the present invention, wherein, the cyclone coagulation pipe 2 extend into the part inside inner cylinder Highly it is the 1/5-1/2 of cyclone coagulation pipe total height.
Some specific embodiments according to the present invention, wherein, the cyclone coagulation pipe 2 further includes the second straight pipe 23, institute The diameter for stating the lower edge of the second straight pipe and the top edge of extension diameter section is equal and be connected with each other.
Some specific embodiments according to the present invention, wherein, the height of the second straight pipe is the 1/3-1/ of extension diameter section height 8。
Some specific embodiments according to the present invention, wherein, the babinet 1 at least upper end is cylindrical, cylindrical case Body highly accounts for the 1/3-2/3 of babinet total height；The diameter ratio of the inner cylinder 3 and the babinet of cylinder is 2/5-2/3；Inner cylinder and circle The height ratio of the babinet of cylindricality is 1/4-1/2.
Some specific embodiments according to the present invention, wherein, at least upper end of babinet 1 is cylindrical, the height of the cylinder Ratio with diameter is 1/4-1/1.
Some specific embodiments according to the present invention, wherein, the lower end of babinet 1 is the truncated cone-shaped stood upside down, the babinet The top edge of truncated cone-shaped is connected with the lower edge of cylinder.
Some specific embodiments according to the present invention, wherein, the upper bottom surface of round platform and the diameter ratio of bottom surface are 1/10-1/ 4。
Some specific embodiments according to the present invention, wherein, flocculant adding mouth 7 is also set up on the water inlet pipe.
On the other hand, present invention also offers a kind of coal-burning power plant's brine waste processing system, wherein, the system bag Include：The water softening device 101 being linked in sequence with pipeline, cyclone-flocculation device 102 of the present invention, filter 103, pre-concentration Device 104, preheater 105, membrane distiller 106 and evaporating column 107.
Some specific embodiments according to the present invention, wherein, the system also includes flue gas mixer 108, the flue gas Mixer is used to that the flue gas of coal-fired plant flue gas processing system air preheater 109 will will to be entered and from coal-fired plant flue gas processing system The flue gas mixing that deduster 110 of uniting comes out, and the heating that evaporating column 107 is used for evaporating column (spray drying tower) is transported to, heat is handed over Flue gas after changing is again by Pipeline transport into the pipeline between air preheater and deduster.
Water softening device 101 of the present invention, filter 103, preconcentrator 104, preheater 105, membrane distiller 106th, evaporating column 107, flue gas mixer 108, air preheater 109 and deduster 110 can be the existing conventional equipment in this area.
Some specific embodiments according to the present invention, wherein, the system also includes with pipeline by preheater 105 and dedusting Pipeline connection between device 110 and desulfurizing tower 111, to be heated using the flue gas come out from deduster to preheater, and will Flue gas by heat exchange is sent to desulfurizing tower again.
Some specific embodiments according to the present invention, wherein, the water softening device 101 sets desulfurization wastewater entrance 1011 With circulating cooling water inlet 1012.
Another further aspect, present invention also offers a kind of processing method of coal-burning power plant's brine waste, wherein, the method bag Include using the cyclone-flocculation device described in any one of the present invention to substitute three headers to power plant desulfurization wastewater and/or power plant cycle Cooling water carries out flocculation separation processing.
The cyclone-flocculation device of independent research of the present invention replaces three traditional headers, realizes rapid flocculation and separates flocculation Grain, flocculation settling time shortens, occupation area of equipment reduces
Some specific embodiments according to the present invention, wherein, the described method includes follow power plant desulfurization wastewater and/or power plant Ring cooling water first passes through sofening treatment, then carries out flocculation separation processing using cyclone-flocculation device of the present invention, then Pre-concentration is carried out after filtering, the liquid obtained after pre-concentration is preheated, then carries out membrane distillation, and membrane distillation obtains dense Brine is evaporated.
Membrane distillation process is seldom using power plant's low temperature exhaust heat heating strong brine, extra energy consumption；
Strong brine enters evaporating column evaporation drying by spray pattern after membrane distillation, from SCR to high temperature cigarette between air preheater The mixed flue gas of gas and deduster to flue gas between desulfurization island is evaporation heat source, and flue gas returns front flue of dust collector after evaporating column, from And realize the zero-emission of waste water.
The water softening device is used to reduce waste water hardness, can use tubular type softening agent chemicals dosing plant, softening water tank, eddy flow One or more in device.
The filter can use a kind of excessively several in multi-medium filtering, micro-filtration, ultrafiltration.
The pre-concentration process can be the one or more in nanofiltration, first-stage reverse osmosis or multi-stage reverse osmosis.
The preheater heats waste water before being used for membrane distillation, and heat source can be between desulfurizing tower after deduster One or both of heat smoke, Boiler Steam preheating.It is heat source according to heat smoke after deduster, goes out the low of distillation device Warm flue gas returns former flue.
Some specific embodiments according to the present invention, wherein, the liquid obtained after pre-concentration carries out being preheated to 50-95 ℃。
Some specific embodiments according to the present invention, wherein, membrane distillation can use air-distillation or low-pressure distillation.
Some specific embodiments according to the present invention, wherein, the membrane distillation process water outlet salt content is not less than 15%.
Some specific embodiments according to the present invention, wherein, it is described that into evaporating column flue section, cyclone ash removal can be set Device.
The solid salt particles that the brine waste spray evaporation is formed can return front flue of dust collector with flue gas or add dedusting Structure traps.
Some specific embodiments according to the present invention, wherein, the processing method is using described in any one of the present invention Processing system handled.
Some specific embodiments according to the present invention, wherein, the system comprises flue gas mixer 108, and will be into Enter coal-fired plant flue gas processing system air preheater 109 flue gas and from coal-fired plant flue gas processing system deduster 110 come out Flue gas is according to 10：0-5：5 ratio is mixed, and is then delivered to the heating that evaporating column 107 is used for evaporating column.
In conclusion the present invention provides a kind of cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and Using.The solution of the present invention has the following advantages that：
It is an object of the invention to develop a kind of coal-burning power plant's brine waste zero emission processing system, electricity can not only be realized Factory waste water zero discharge, and whole processing system less developer, floor space are small, concentration and evaporation process using flue gas as heat source, Energy consumption is low, and wastewater treatment capacity is adjustable, will not cause the harm of walling of flue fouling corrosion and electric precipitation.
Whole technical process is almost not required to additionally introduce energy consumption, is completed by using residual heat from boiler fume, and use Brine waste can be concentrated into more than 15% by membrane distillation, can effectively save waste water evaporation compared with two steps ro concentration rate higher The exhaust gas volumn of drying process；The waste water solid salt particles that evaporation drying is formed in evaporating column can enter follow-up dedusting with flue gas Device is captured down, or is recycled most of solid particle collection using efficient cyclone separator, and remaining flue gas, which enters back into, to be removed The further dust separation of dirt device, it is optional that two schemes regard the specific ash sample requirement of power plant.Smoke moisture into deduster can be Improve, help to improve the efficiency of dust collection of electric precipitation.Whole flow process is completed outside flue, will not to boiler operatiopn and air preheater, Deduster and sweetening process bring influence, and are easy to Maintenance and Repair.Brine waste is spray-dried the solid salt particles to be formed can not Into deduster, the quality of original flyash is not influenced.
Brief description of the drawings
Fig. 1 is the cyclone-flocculation device of embodiment 1.
Fig. 2 is coal-burning power plant's brine waste processing system of embodiment 1.
Embodiment
Below by way of the specific embodiment implementation process that the present invention will be described in detail and the beneficial effect produced, it is intended to which help is read Reader more fully understand the present invention essence and feature, not as to this case can practical range restriction.
Embodiment 1
Using waste water treatment system as shown in Figure 2, waste water (before processing index is as shown in table 1) process flow：(1) through soft Water desalting plant is with soda to be softened, and is entered back into cyclone-flocculation device (as shown in Figure 1), is added poly-ferric chloride flocculation aid successively And polyacrylamide flocculant, spiral flow flocculation device export the near 12mg/L of SS contents, content of copper ion 5mg/L in waste water, other Component is essentially unchanged；(2) filter process uses more medium filter, at this time suspension content<3mg/L, calcium ion (Ca2+) 657mg/L, magnesium ion (Mg2+)366mg/L；(3) preshrunk is carried out using two steps ro processing, waste water TDS is dense by 25000mg/L 60000mg/L or so, fresh water reuse are reduced to, strong brine enters membrane distillation processing unit；(4) membrane distillation process is with low-grade steam More than 150000mg/l is further concentrated into for heat source, membrane distillation temperature 75oC, the fresh water reuse of condensation, waste water salt content, this When strong brine amount be about the 20~30% of raw wastewater amount；(5) strong brine through two-fluid spray nozzle with 100~200 microns of size droplets Form enter the outer evaporating column of flue, use more than 300oC high-temperature flue gas as heat source progress spray evaporation, be evaporated rear salt particle with Flue gas is captured down into electrostatic precipitator, and the moisture of evaporation is condensed in desulfurizing tower.Whole flow process is useless compared with other Water zero discharge treatment process simplifies, and flow is short, and make use of the low-grade heat source of power plant, and energy consumption cost is low, and through the stream Journey finally realizes the near-zero release of waste water.
Wherein operational process of the waste water in the cyclone-flocculation device shown in Fig. 1 be：Waste water spin current device bottom water inlet pipe 6 Into equipment, meanwhile, the flocculant adding mouth 7 in pipeline back adds flocculant；Waste water and the flocculant shape after swirl vane 5 Into strong eddy flow, realize that both are quickly sufficiently mixed；Taper into 22 water velocity of extension diameter section of cyclone coagulation pipe, help at this time In the formation of small flco, to agglomerate the starting stage；The waste water tentatively agglomerated enters inner cylinder 3, and inner cylinder section is much larger than expansion segment, Water velocity is remarkably decreased, and contributes to growing up for small flco at this time, and prevent big flocculating body from crushing.Rotation is added in inner cylinder middle and lower reaches Conductance plate 4, on the one hand contributes to the mutual collision of flco to form big flocculating body, waste water is further formed big and is stablized Eddy flow, contribute to the rotational flow settlement of follow-up big flocculating body；From the eddy flow waste water of inner cylinder outflow, floccule body is downwardly into conical section reality Existing cyclone sediment is discharged from bottom, and clear water enters outlet conduit from water exit end, through overflow launder upwards, is obtained clear without suspended matter Water.Waste water index before and after the processing is distinguished shown in following Tables 1 and 2.
The waste water index of table 1, before processing
Sequence number Project Unit Wastewater parameter
1 pH 6.67
2 Suspended matter (SS) mg/L 310
3 Ammonia nitrogen mg/L ~10
4 Chlorion (Cl-) mg/L 18123
5 Sulfate ion (SO4 2-) mg/L 997
6 Total silicon (SiO2) mg/L 84
7 Calcium ion (Ca2+) mg/L 8334
8 Magnesium ion (Mg2+) mg/L 1314
9 Copper ion (Cu2+) mg/L 64
10 TDS mg/L 29455
Table 2, the waste water index after the processing of cyclone-flocculation device

Claims (10)

1. a kind of cyclone-flocculation device, wherein, described device includes babinet (1), box house centre position sets cyclone coagulation (2) and inner cylinder (3) are managed, the cyclone coagulation pipe, which is arranged on the bottom of box and extends upwardly to its top edge, to be located in inner cylinder Portion, and do not contacted with casing top to form water stream channel between its top edge and casing top, the inner cylinder is arranged on Casing top simultaneously extends downwardly, and its bottom margin is not contacted with babinet to form water between its bottom margin and cabinet wall Circulation road；The outer wall that the part of inner cylinder is stretched into cyclone coagulation pipe sets eddy flow guide plate (4) (preferably the quantity of eddy flow guide plate is 6- 8 (preferably the height of eddy flow guide plate for cyclone coagulation pipe stretch into inner cylinder Partial Height 1/6-1/3)), in cyclone coagulation pipe Inside sets swirl vane (5)；The bottom of box outwards sets water inlet pipe (6) (to also set up flocculant on preferably described water inlet pipe to add Add mouth (7)), water inlet pipe is connected with cyclone coagulation pipe；The edge of casing top sets overflow launder (8) (shape preferably on the outside of overflow launder Into downflow weir (81) (preferably overflow launder is 1-3, and each length is the 1/4-1 of casing top girth) (preferably height of weir plate For the 1/2-1/5 of isopipe width)).
2. cyclone-flocculation device according to claim 1, wherein, the height of the cyclone coagulation pipe (2) is box height 2/3-9/10, the cyclone coagulation pipe (2) includes the extension diameter section (22) of the first straight pipe (21) and handstand truncated cone-shaped；Described The top edge of one straight pipe is equal with the diameter of the lower edge of extension diameter section and is connected with each other, the diameter of the extension diameter section top edge with The diameter ratio of lower edge is (1.5~3)：1, the height of the extension diameter section and the diameter ratio of extension diameter section top edge are 2/1-4/1.
3. cyclone-flocculation device according to claim 1 or 2, wherein, the cyclone coagulation pipe (2) is extend into inside inner cylinder The height of part for the 1/5-1/2 of cyclone coagulation pipe total height, (preferably described cyclone coagulation pipe (2) further includes the second straight pipe (23), the lower edge of second straight pipe is equal with the diameter of the top edge of extension diameter section and is connected with each other (preferably the second straight tube The height of section is the 1/3-1/8 of extension diameter section height)).
4. cyclone-flocculation device according to claim 1, wherein, the babinet (1) at least upper end is (preferably round for cylinder The height of column and the ratio of diameter are 1/4-1/1), cylindrical box height accounts for the 1/3-2/3 of babinet total height；The inner cylinder (3) the diameter ratio with the babinet of cylinder is 2/5-2/3；The height ratio of inner cylinder and the babinet of cylinder is 1/4-1/2 (preferably casees The lower end of body (1) is the truncated cone-shaped stood upside down, and the top edge of the truncated cone-shaped of the babinet is connected with the lower edge of cylinder (preferably to be justified The upper bottom surface of platform and the diameter ratio of bottom surface are 1/10-1/4)).
5. a kind of high turbid wastewater processing system of coal-burning power plant's high salt, wherein, the system comprises：The softening being linked in sequence with pipeline Water installations (101), cyclone-flocculation device (102), filter (103), preconcentrator described in Claims 1 to 4 any one (104), preheater (105), membrane distiller (106) and evaporating column (107).
6. brine waste processing system in coal-burning power plant's according to claim 5, wherein, the system also includes flue gas mixing Device (108), the flue gas mixer be used for will enter coal-fired plant flue gas processing system air preheater (109) flue gas and from The flue gas mixing that coal-fired plant flue gas processing system deduster (110) comes out, and be transported to evaporating column (107) and be used for evaporating column Heating, the flue gas after heat exchange again (preferably will be pre- with pipeline into the pipeline between air preheater and deduster by Pipeline transport Hot device (105) is connected with the pipeline between deduster (110) and desulfurizing tower (111), to utilize the flue gas pair come out from deduster Preheater is heated, and the flue gas Jing Guo heat exchange is sent to desulfurizing tower again).
7. coal-burning power plant's brine waste processing system according to claim 5 or 6, wherein, the water softening device (101) Desulfurization wastewater entrance (1011) and circulating cooling water inlet (1012) are set.
8. a kind of processing method of coal-burning power plant's brine waste, wherein, the described method includes usage right requirement 1~4 is any one Cyclone-flocculation device described in carries out flocculation separation to substitute three headers to power plant desulfurization wastewater and/or circulating cooling water of power plant Processing.
9. processing method according to claim 8, wherein, the described method includes follow power plant desulfurization wastewater and/or power plant Ring cooling water first passes through sofening treatment, and then usage right requires the cyclone-flocculation device described in 1~4 any one to flocculate Separating treatment, then carries out pre-concentration after filtering, and the liquid obtained after pre-concentration, which is preheated, (is preferably heated to 50- 95 DEG C), then membrane distillation is carried out, the strong brine that membrane distillation obtains is evaporated that (preferably described processing method is usage right requirement 5 Processing system described in~7 any one is handled).
10. processing method according to claim 9, wherein, the system comprises flue gas mixer (108), and will Into the flue gas of coal-fired plant flue gas processing system air preheater (109) and from coal-fired plant flue gas processing system deduster (110) Flue gas out is according to 10：0-5：5 ratio is mixed, and is then delivered to the heating that evaporating column (107) is used for evaporating column.
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