CN105836954A - System and method for efficient and energy-saving treatment of salt-containing wastewater - Google Patents

System and method for efficient and energy-saving treatment of salt-containing wastewater Download PDF

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Publication number
CN105836954A
CN105836954A CN201610370037.2A CN201610370037A CN105836954A CN 105836954 A CN105836954 A CN 105836954A CN 201610370037 A CN201610370037 A CN 201610370037A CN 105836954 A CN105836954 A CN 105836954A
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tube type
type filter
filter membrance
water
continued
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CN201610370037.2A
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Inventor
秦余春
张承慈
王大新
邵国华
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BEIJING WOTEER WATER TECHNOLOGY Co Ltd
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BEIJING WOTEER WATER TECHNOLOGY Co Ltd
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Priority to CN201610370037.2A priority Critical patent/CN105836954A/en
Publication of CN105836954A publication Critical patent/CN105836954A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/445Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/447Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4693Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

The invention provides a system and method for efficient and energy-saving treatment of salt-containing wastewater. The treatment system comprises a pretreatment device, a tubular membrane device and an aftertreatment device which are communicated in sequence. The tubular membrane device comprises a preceding tubular microfiltration membrane and a follow-up tubular microfiltration membrane. The treatment method comprises pretreatment, solid-liquid separation treatment and follow-up treatment. According to the system and method for efficient and energy-saving treatment of salt-containing wastewater, the tubular membrane device, namely the multi-stage tubular microfiltration membranes, is adopted to treat the salt-containing wastewater, and pollutants in the wastewater can be removed efficiently. The wastewater containing sludge particles can enter a membrane system to undergo solid-liquid separation directly, processes are effectively shortened, and the area occupied by the system is reduced. The problems that the water outlet effect is poor, secondary pollution is caused to the environment, the running energy consumption is high, the occupied space is large, and the investment cost is high in the prior art are solved, and the system and the method have popularization and application values.

Description

A kind of energy-efficient brine waste processing system and method
Technical field
The present invention relates to saliferous wastewater processing technology field, especially relate to a kind of energy-efficient brine waste processing system And method.
Background technology
The waste water produced in the industrial processes such as electric power, metallurgy, chemical industry, desalinization, printing and dyeing and papermaking, usually contains Higher hardness and higher salinity.Calcium, the total concentration of magnesium ion that higher hardness is primarily referred to as in sewage are high, such useless If the unprocessed direct discharge of water, the salinization of soil of water body and soil, present environmental risks can be caused.
Currently for the softening method of this high rigidity waste water, mainly include chemical method and ion-exchange.Chemical method exists Various high slat-containing wastewaters go in the actual application of deliming, magnesium the most universal.Its dominant mechanism is to add certain change in waste water Learn medicament, make calcium, magnesium ion formed difficulty soluble salt and precipitate or flocculate, and then removing, the method generally arrange two-stage reaction pond and Two-stage depositing reservoir, floor space is bigger.Ion-exchange is applied the most wide in terms of waste water goes hardness, produces softening water.From Sub-exchange process can effectively remove deliming, magnesium scale ion, but resin or other carriers the most all exist regeneration issues, Regenerative process is typically necessary regenerative agent, its somewhat expensive and the existence problem to the secondary pollution of environment, it is unsuitable for height The needs that hardness waste water softens.
Now, need a kind of energy-efficient brine waste processing system and method badly, can effectively remove in industry brine waste Salinity and suspended contaminant, reduce waste water turbidity, outlet effect is good, energy-conserving and environment-protective, and system footprint area is little, puts into into This is low.
Summary of the invention
It is an object of the invention to provide a kind of energy-efficient brine waste processing system and method, to solve prior art The outlet effect of middle brine waste processing system is poor, and environment can cause secondary pollution, and operation energy consumption is high, and floor space is big, And the problem that input cost is high.
To achieve these goals, the present invention is by the following technical solutions:
The one energy-efficient brine waste processing system that the present invention provides, including the pretreatment unit being sequentially communicated, pipe Formula film device and after-treatment device;Described tubular membrane device includes front and continued tube type filter membrance and follow-up tube type filter membrance, described before The charging pump of continuous tube type filter membrance is low-pressure centrifugal pump, and the charging pump of described follow-up tube type filter membrance is high pressure centrifugal pump.
Further, the quantity of described front and continued tube type filter membrance is at least 1 group, and the quantity of follow-up tube type filter membrance is 1 group, front Connected mode between continuous tube type filter membrance and between front and continued tube type filter membrance and follow-up tube type filter membrance be serial or parallel connection or Series and parallel combines.This technical scheme have the technical effect that under normal circumstances, two-stage tube type filter membrance, i.e. 1 group front and continued are set Tube type filter membrance and 1 group of follow-up tube type filter membrance, when waste water treatment scale is more than 15m3During/h, multi-level tubular microfiltration membranes is set, I.e. more than 2 groups front and continued tube type filter membrances and 1 group of follow-up tube type filter membrance;Through front and continued tube type filter membrance and follow-up tube type filter membrance Effect, can be separated by settleable solids material in waste water, reach the purpose of separation of solid and liquid.
Further, described high pressure centrifugal pump is vertical multi-stage centrifugal pump.Having the technical effect that of this technical scheme is vertical many The volume of level centrifugal pump is little, lightweight, noise is low, energy-saving effect is notable, overhauls, changes conveniently.
Further, described pretreatment unit includes first order reaction device and second order reaction device, described first order reaction device And second order reaction device all configures agitating device.Having the technical effect that in first order reaction device of this technical scheme adds alkalescence Material, adds soda ash in second order reaction device, makes the easily scale forming matter such as the calcium in waste water, magnesium, fluorine and element silicon be formed and can settle Property solid matter, to leach;First order reaction device and second order reaction device all configure agitating device, can make that reaction is more rapid, fill Ground is divided to carry out.
Further, described after-treatment device includes a point salt device, film condensing device and evaporated crystallization device.This technical scheme Have the technical effect that waste water, after a point salt device, film condensing device and evaporated crystallization device process, generates crystal salt, and Waste water after process can reuse again;Salt device is divided to include nanofiltration device and electrodialysis plant.
Further, described film condensing device is reverse osmosis membrane apparatus, electrodialytic membranes device, distillation device and forward osmosis membrane One or more combination in device.This technical scheme have the technical effect that waste water through reverse osmosis membrane apparatus, electrodialytic membranes dress Put, after the process of one or more combination in distillation device and forward osmosis membrane device, high rigidity element is removed further, Reach the standard of reuse.
Further, intermediate water tank, intermediate water tank before described first film before intermediate water tank and the second film are also included before the first film Be arranged between pretreatment unit and tubular membrane device, before described second film intermediate water tank be arranged on front and continued tube type filter membrance with after Between continuous tube type filter membrance.This technical scheme have the technical effect that pretreatment unit water outlet, before the first film in intermediate water tank Carry out water quality adjustment, flow into front and continued tube type filter membrance after homogeneous and carry out preliminary separation of solid and liquid;After follow-up tube type filter membrance processes Waste water, major part returns intermediate water tank before the second film, it is achieved the circulating cross-flow filtration of part, more effectively carries out waste water solid Liquid separates.
Further, also include that mud storage tank and sludge dewatering equipment, described mud storage tank are arranged on intermediate water tank before the second film And between pretreatment unit, described sludge dewatering equipment is arranged between mud storage tank and pretreatment unit.The skill of this technical scheme Art effect is: the solid matter in waste water, intermediate water tank before the second film enter mud storage tank, then through sludge dewatering equipment Effect, separates the water in mud, to realize reuse.
A kind of energy-efficient salt-containing waste water treatment method, comprises the steps:
Step 1, pretreatment, in described first order reaction device, add alkaline matter, throw in described second order reaction device Adding soda ash, brine waste flows into first order reaction device and second order reaction device, and waste water is stirred by described agitating device, waste water In the easily scale forming matter such as calcium, magnesium, fluorine and element silicon formed can settleable solids material, waste water flows into water in the middle of before the first film Case, carries out water quality adjustment, flows into front and continued tube type filter membrance and carry out preliminary separation of solid and liquid after homogeneous;
Step 2, separation of solid and liquid processes, and brine waste is flowed into described front and continued tubular type micro-filtration by intermediate water tank before described first film Film concentrates, and dense water solid content is 1%-2%, and waste water treatment scale is more than 15m3During/h, the quantity of front and continued tube type filter membrance Being more than 2 groups, the dense water of front and continued tube type filter membrance enters described follow-up tube type filter membrance to be continued to concentrate, and waste water uses part circulating Cross-flow filtration, intermediate water tank before a dense water part returns described second film after follow-up tube type filter membrance processes, part discharge To mud storage tank;
Step 3, subsequent treatment, described tubular membrane device filter liquor flows into described after-treatment device, generates crystal salt, processes After effluent reuse.
Further, described follow-up tube type filter membrance leach the outer discharge capacity sum of liquid measure and dense water and front and continued tube type filter membrance The outer discharge capacity sum of dense water is suitable.
The one energy-efficient brine waste processing system of present invention offer and method, use tubular membrane device to give up saliferous Water processes, and tube type filter membrance has the feature of resistance to epistasis and chemical resistance, can remove the pollution in waste water efficiently Thing, and the waste water entrance membranous system containing mud granule can be made directly to carry out separation of solid and liquid, eliminate clarification sedimentation basin, multimedium The monotechnics such as filtration, sand filtration, carbon filter, ultrafiltration and ion exchange, is effectively shortened technological process, reduces system footprint face Long-pending, the outlet effect solving existing brine waste processing system is poor, and environment can cause secondary pollution, and operation energy consumption is high, Floor space is big, and the problem that input cost is high, is adapted for popularization and application.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of energy-efficient brine waste processing system that Fig. 1 provides for the embodiment of the present invention one.
Reference:
1-pretreatment unit;2-front and continued tube type filter membrance;The follow-up tube type filter membrance of 3-;
4-after-treatment device;Intermediate water tank before 5-the first film;Intermediate water tank before 6-the second film;
7-mud storage tank;8-sludge dewatering equipment.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ", Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected;Can To be mechanical connection, it is also possible to be electrical connection;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition Concrete meaning in invention.
The structural representation of a kind of energy-efficient brine waste processing system that Fig. 1 provides for the embodiment of the present invention one.
Embodiment one:
In the alternative of the present embodiment, as it is shown in figure 1, at the energy-efficient brine waste of one of the present embodiment offer Reason system, including the pretreatment unit 1 being sequentially communicated, tubular membrane device and after-treatment device 4;Tubular membrane device includes front and continued pipe Decline filter membrane 2 and follow-up tube type filter membrance 3, and the charging pump of front and continued tube type filter membrance 2 is low-pressure centrifugal pump, follow-up tube type filter membrance The charging pump of 3 is high pressure centrifugal pump.Current brine waste processing system uses traditional chemical method and ion-exchange, system Outlet effect poor, environment can be caused secondary pollution, operation energy consumption is high, and floor space is big, and input cost is high.In this enforcement In example, using tubular membrane device to process brine waste, tube type filter membrance has the spy of resistance to epistasis and chemical resistance Point, can remove the pollutant in waste water efficiently, and the waste water entrance membranous system containing mud granule can be made directly to carry out solid-liquid Separate, eliminate the monotechnicss such as clarification sedimentation basin, multi-medium filtering, sand filtration, carbon filter, ultrafiltration and ion exchange, effectively contract Short technological process, reduces system footprint area, and outlet effect is good, and operation energy consumption is low.
In the alternative of the present embodiment, further, the quantity of front and continued tube type filter membrance 2 is 1 group, and follow-up tubular type is micro- The quantity of filter membrane 3 is 1 group, between front and continued tube type filter membrance 2 and between front and continued tube type filter membrance 2 and follow-up tube type filter membrance 3 Connected mode is that series and parallel combines.In the present embodiment, two-stage tube type filter membrance, i.e. 1 group front and continued tube type filter membrance 2 and 1 are set Organize follow-up tube type filter membrance 3, through front and continued tube type filter membrance 2 and the effect of follow-up tube type filter membrance 3, in waste water can settleability Solid matter is separated, and reaches the purpose of separation of solid and liquid.
In the alternative of the present embodiment, further, high pressure centrifugal pump is vertical multi-stage centrifugal pump.At the present embodiment In, the volume of vertical multi-stage centrifugal pump is little, lightweight, noise is low, energy-saving effect is notable, overhauls, changes conveniently;Vertical multi-stage from Heart pump is prior art, can buy in market.
In the alternative of the present embodiment, further, pretreatment unit 1 includes first order reaction device and second order reaction Device, first order reaction device and second order reaction device all configure agitating device.In the present embodiment, first order reaction device adds Alkaline matter, adds soda ash in second order reaction device, and making the easily scale forming matter such as the calcium in waste water, magnesium, fluorine and element silicon be formed can Settleable solids material, to leach;First order reaction device and second order reaction device all configure agitating device, can make reaction faster Speed, be sufficiently carried out.
In the alternative of the present embodiment, further, after-treatment device 4 include a point salt device, film condensing device and Evaporated crystallization device.In the present embodiment, waste water, after a point salt device, film condensing device and evaporated crystallization device process, generates Waste water after crystal salt, and process can reuse again;Salt device is divided to include nanofiltration device and electrodialysis plant.
In the alternative of the present embodiment, further, film condensing device is reverse osmosis membrane apparatus, electrodialytic membranes dress Put, one or more combination in distillation device and forward osmosis membrane device.In the present embodiment, waste water fills through reverse osmosis membrane Put, after the process of one or more combination in electrodialytic membranes device, distillation device and forward osmosis membrane device, high rigidity element Removed further, to reach the purpose of reuse.
In the alternative of the present embodiment, further, also include before the first film in the middle of before intermediate water tank 5 and the second film Water tank 6, before the first film, intermediate water tank 5 is arranged between pretreatment unit 1 and tubular membrane device, and before the second film, intermediate water tank 6 sets Put between front and continued tube type filter membrance 2 and follow-up tube type filter membrance 3.In the present embodiment, pretreatment unit 1 water outlet, first Intermediate water tank 5 carries out before film water quality adjustment, flows into front and continued tube type filter membrance 2 after homogeneous and carry out preliminary separation of solid and liquid;Through follow-up Waste water after tube type filter membrance 3 process, major part returns intermediate water tank 6 before the second film, it is achieved the circulating cross-flow filtration of part, more Effectively waste water is carried out separation of solid and liquid.
In the alternative of the present embodiment, further, mud storage tank 7 and sludge dewatering equipment 8, mud storage tank are also included 7 are arranged on before the second film between intermediate water tank 6 and pretreatment unit 1, and sludge dewatering equipment 8 is arranged on mud storage tank 7 and pretreatment Between device 1.In the present embodiment, the solid matter in waste water, intermediate water tank 6 before the second film enter mud storage tank 7, then warp Cross the effect of sludge dewatering equipment 8, the water in mud is separated, to realize reuse.
A kind of energy-efficient salt-containing waste water treatment method, comprises the steps:
Step 1, pretreatment, in first order reaction device, add alkaline matter, in second order reaction device, add soda ash, contain Salt waste water flows into first order reaction device and second order reaction device, and waste water is stirred by agitating device, the calcium in waste water, magnesium, fluorine And the easily scale forming matter such as element silicon formed can settleable solids material, waste water flows into intermediate water tank 5 before the first film, carries out water quality tune Joint, flows into front and continued tube type filter membrance 2 and carries out preliminary separation of solid and liquid after homogeneous;
Step 2, separation of solid and liquid processes, and brine waste is flowed into front and continued tube type filter membrance 2 by intermediate water tank 5 before the first film to be carried out Concentrating, dense water solid content is 1%-2%, and the dense water of front and continued tube type filter membrance enters follow-up tube type filter membrance 3 to be continued to concentrate, and waste water is adopted With the circulating cross-flow filtration of part, intermediate water tank 6 before a dense water part returns the second film after follow-up tube type filter membrance 3 processes, A part is emitted into mud storage tank 7;
Step 3, subsequent treatment, tubular membrane device filter liquor flows into after-treatment device 4, generates crystal salt, going out after process Water circulation.
In the alternative of the present embodiment, further, follow-up tube type filter membrance 3 leach the outer discharge capacity of liquid measure and dense water Sum discharge capacity sum outer with the dense water of front and continued tube type filter membrance 2 is suitable.
Embodiment two:
In the alternative of the present embodiment, as it is shown in figure 1, at the energy-efficient brine waste of one of the present embodiment offer Reason system, including the pretreatment unit 1 being sequentially communicated, tubular membrane device and after-treatment device 4;Tubular membrane device includes front and continued pipe Decline filter membrane 2 and follow-up tube type filter membrance 3, and the charging pump of front and continued tube type filter membrance 2 is low-pressure centrifugal pump, follow-up tube type filter membrance The charging pump of 3 is high pressure centrifugal pump.In the present embodiment, use tubular membrane device that brine waste is processed, tubular type micro-filtration Film has the feature of resistance to epistasis and chemical resistance, can remove the pollutant in waste water efficiently, and can make containing mud The waste water of grain enters membranous system and directly carries out separation of solid and liquid, eliminates clarification sedimentation basin, multi-medium filtering, sand filtration, carbon filter, ultrafiltration And the monotechnics such as ion exchange, it being effectively shortened technological process, reduce system footprint area, outlet effect is good, runs Energy consumption is low.
In the alternative of the present embodiment, further, the quantity of front and continued tube type filter membrance 2 is 2 groups, and follow-up tubular type is micro- The quantity of filter membrane 3 is 1 group, between front and continued tube type filter membrance 2 and between front and continued tube type filter membrance 2 and follow-up tube type filter membrance 3 Connected mode is that series and parallel combines.In the present embodiment, arranging the above tube type filter membrance of two-stage, specially 2 groups front and continued tubular types are micro- Filter membrane 2 and 1 group of follow-up tube type filter membrance 3, through front and continued tube type filter membrance 2 and the effect of follow-up tube type filter membrance 3, in waste water Can be separated by settleable solids material, reach the purpose of separation of solid and liquid.
In the alternative of the present embodiment, further, other settings are identical with embodiment one.
A kind of energy-efficient salt-containing waste water treatment method, comprises the steps:
Step 1, pretreatment, in first order reaction device, add alkaline matter, in second order reaction device, add soda ash, contain Salt waste water flows into first order reaction device and second order reaction device, and waste water is stirred by agitating device, the calcium in waste water, magnesium, fluorine And the easily scale forming matter such as element silicon formed can settleable solids material, waste water flows into intermediate water tank 5 before the first film, carries out water quality tune Joint, flows into front and continued tube type filter membrance 2 and carries out preliminary separation of solid and liquid after homogeneous;
Step 2, separation of solid and liquid processes, and brine waste is flowed into front and continued tube type filter membrance 2 by intermediate water tank 5 before the first film to be carried out Concentrating, dense water solid content is 1%-2%, and the dense water of front and continued tube type filter membrance enters follow-up tube type filter membrance 3 to be continued to concentrate, and waste water is adopted With the circulating cross-flow filtration of part, intermediate water tank 6 before a dense water part returns the second film after follow-up tube type filter membrance 3 processes, A part is emitted into mud storage tank 7;
Step 3, subsequent treatment, tubular membrane device filter liquor flows into after-treatment device 4, generates crystal salt, going out after process Water circulation.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit;To the greatest extent The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered Row equivalent;And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. an energy-efficient brine waste processing system, it is characterised in that include pretreatment unit, the tubular membrane being sequentially communicated Device and after-treatment device;Described tubular membrane device includes front and continued tube type filter membrance and follow-up tube type filter membrance, described front and continued pipe The charging pump of filter membrane of declining is low-pressure centrifugal pump, and the charging pump of described follow-up tube type filter membrance is high pressure centrifugal pump.
One the most according to claim 1 energy-efficient brine waste processing system, it is characterised in that described front and continued tubular type The quantity of microfiltration membranes is at least 1 group, and the quantity of follow-up tube type filter membrance is 1 group, between front and continued tube type filter membrance and front and continued tubular type Connected mode between microfiltration membranes with follow-up tube type filter membrance is serial or parallel connection or series and parallel is combined.
One the most according to claim 1 energy-efficient brine waste processing system, it is characterised in that described centrifugal high pressure Pump is vertical multi-stage centrifugal pump.
One the most according to claim 1 energy-efficient brine waste processing system, it is characterised in that described pretreatment fills Putting and include first order reaction device and second order reaction device, described first order reaction device and second order reaction device all configure stirring dress Put.
One the most according to claim 1 energy-efficient brine waste processing system, it is characterised in that described post processing fills Put and include a point salt device, film condensing device and evaporated crystallization device.
One the most according to claim 5 energy-efficient brine waste processing system, it is characterised in that described film concentrates dress It is set to the one or more combination in reverse osmosis membrane apparatus, electrodialytic membranes device, distillation device and forward osmosis membrane device.
One the most according to claim 1 energy-efficient brine waste processing system, it is characterised in that also include the first film Intermediate water tank before front intermediate water tank and the second film, before described first film, intermediate water tank is arranged on pretreatment unit and tubular membrane device Between, before described second film, intermediate water tank is arranged between front and continued tube type filter membrance and follow-up tube type filter membrance.
One the most according to claim 7 energy-efficient brine waste processing system, it is characterised in that also include that mud is store Groove and sludge dewatering equipment, described mud storage tank is arranged on before the second film between intermediate water tank and pretreatment unit, and described mud takes off Water machine is arranged between mud storage tank and pretreatment unit.
9. an energy-efficient salt-containing waste water treatment method based on processing system described in any one of claim 1-8, its feature It is, comprises the steps:
Step 1, pretreatment, in described first order reaction device, add alkaline matter, add pure in described second order reaction device Alkali, brine waste flows into first order reaction device and second order reaction device, and waste water is stirred by described agitating device, in waste water The easily scale forming matter such as calcium, magnesium, fluorine and element silicon formed can settleable solids material, waste water flows into intermediate water tank before the first film, enters Row water quality adjustment, flows into front and continued tube type filter membrance and carries out preliminary separation of solid and liquid after homogeneous;
Step 2, separation of solid and liquid processes, and brine waste is flowed into described front and continued tube type filter membrance by intermediate water tank before described first film and enters Row concentrates, and dense water solid content is 1%-2%, and waste water treatment scale is more than 15m3During/h, the quantity of front and continued tube type filter membrance is 2 Above, the dense water of front and continued tube type filter membrance enters described follow-up tube type filter membrance to be continued to concentrate, and waste water uses the circulating cross-flow of part Filtering, intermediate water tank before a dense water part returns described second film after follow-up tube type filter membrance processes, a part is emitted into dirt Mud storage tank;
Step 3, subsequent treatment, described tubular membrane device filter liquor flows into described after-treatment device, generates crystal salt, after process Effluent reuse.
The energy-efficient salt-containing waste water treatment method of one the most according to claim 9, it is characterised in that described follow-up pipe Decline filter membrane to leach the outer discharge capacity sum of liquid measure and dense water suitable with the dense water of front and continued tube type filter membrance discharge capacity sum outward.
CN201610370037.2A 2016-05-30 2016-05-30 System and method for efficient and energy-saving treatment of salt-containing wastewater Pending CN105836954A (en)

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Application publication date: 20160810