CN209685528U - Waste water treatment system - Google Patents
Waste water treatment system Download PDFInfo
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- CN209685528U CN209685528U CN201920301167.XU CN201920301167U CN209685528U CN 209685528 U CN209685528 U CN 209685528U CN 201920301167 U CN201920301167 U CN 201920301167U CN 209685528 U CN209685528 U CN 209685528U
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Abstract
This application involves water-treatment technology fields, in particular to a kind of waste water treatment system comprising the first pretreatment unit, the second pretreatment unit, biochemical device, filter device and evaporated crystallization device；The biochemical device is connected to the first pretreatment unit and the second pretreatment unit；Filter device is connected to biochemical device, which includes reuse water out and concentrated solution outlet；Evaporated crystallization device includes the first import being connected to concentrated solution outlet, the second import being connected to the second pretreatment unit and the condensation-water drain being connected to biochemical device, wherein, evaporated crystallization device is used to be evaporated crystallization treatment to the waste water entered from the first import and the second import, to obtain steam and crystalline solid, when steam does not meet water supply standard, steam can be back to biochemical device by condensation-water drain.The technical solution can be realized wastewater zero discharge.
Description
Technical field
This application involves water-treatment technology fields, in particular to a kind of waste water treatment system.
Background technique
With the industrialized development in China, hazardous waste is largely generated.According to the definition of " hazardous waste judging standard ": danger
Dangerous waste, which refers to, to be included in National Hazard waste register or is recognized according to the hazardous waste judging standard and discrimination method of national regulation
Fixed has one or more kinds of hazard properties such as corrosivity, toxicity, inflammability, reactivity and infectivity, and is not excluded for
Solid waste with the above hazard property.Wherein, hazardous waste be mainly derived from mining industry, machining, petrochemical industry,
Auto manufacturing, medical industry, electronics industry and scientific research experiment etc..
Since the hazardous waste type and property difference, processing method of different industries are also not quite similar.In general
Dangerous waste disposal factory would generally receive tens kinds of hazardous waste.So different disposition lines can be arranged in dangerous waste disposition factory,
Dispose the hazardous waste of heterogeneity and type.During dangerous waste disposal, a large amount of production waste water can be generated.
Currently, the waste water discharged for the wastewater treatment of dangerous waste disposal factory primarily directed to some waste treatment system
It is handled, but since the waste component that different waste processing system is discharged in dangerous waste disposal factory is not exactly the same,
When the waste water that the wastewater treatment of the dangerous waste disposal factory is discharged for other waste treatment systems, treatment effect is poor, unfavorable
In realization, entire dangerous waste disposal factory realizes wastewater zero discharge.
It should be noted that information is only used for reinforcing the reason to the background of the application disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Utility model content
The application's is designed to provide a kind of waste water treatment system, can be realized wastewater zero discharge.
The application's is designed to provide a kind of waste water treatment system comprising:
First pretreatment unit, for carrying out precipitation process to first kind waste water；
Second pretreatment unit, for carrying out the second class waste water except hard processing；
Biochemical device is connected to first pretreatment unit and second pretreatment unit, and for described in warp
Treated that waste water carries out biochemical treatment for first pretreatment unit treated waste water and second pretreatment unit；
Filter device is connected to the biochemical device, and the filter device includes reuse water out and concentrated solution outlet,
The filter device is used for through the biochemical device, treated that waste water is filtered processing, to obtain recycle-water and concentration
Liquid；
Evaporated crystallization device, the evaporated crystallization device include the first import, the second import and condensation-water drain, and described the
One import is connected to the concentrated solution outlet, and second import is connected to second pretreatment unit, and the condensed water goes out
Mouth is connected to the biochemical device；
Wherein, the evaporated crystallization device is used to carry out the waste water entered from first import and second import
Evaporative crystallization processing, to obtain steam and crystalline solid, when the steam does not meet water supply standard, the steam can pass through institute
It states condensation-water drain and is back to the biochemical device.
In a kind of exemplary embodiment of the application, first pretreatment unit includes being sequentially communicated by waste water flow direction
The first conditioning tank, air flotation cell and materialization unit, the materialization unit include the first sludge outlet and the first wastewater outlet, institute
The first wastewater outlet is stated to be connected to the biochemical device.
In a kind of exemplary embodiment of the application, further includes:
Sludge storage pool is connected to first sludge mouth；
Sludge dehydration device is connected to the sludge storage pool, for carrying out at dehydration to the sludge in the sludge storage pool
Reason.
In a kind of exemplary embodiment of the application, the biochemical device includes lacking according to what waste water flow direction was sequentially communicated
Oxygen pond, aerobic tank and membrane biological reaction pond, the membrane biological reaction pond includes the second sludge outlet and the second wastewater outlet, described
Second wastewater outlet is connected to the filter device.
In a kind of exemplary embodiment of the application, further includes:
Sludge storage pool is connected to second sludge mouth；
Sludge dehydration device is connected to the sludge storage pool, for carrying out at dehydration to the sludge in the sludge storage pool
Reason.
In a kind of exemplary embodiment of the application, the filter device includes receiving according to what waste water flow direction was sequentially communicated
It filters unit and reverse osmosis units, the reverse osmosis units includes the reuse water out；
And the filter device further includes concentration liquid case, the concentration liquid case can be with the nano-filtration unit and described reverse osmosis
Unit is connected to, and the concentrate in concentrate and the reverse osmosis units in the nano-filtration unit can flow into the concentration liquid case
In, and the concentrate case includes the concentrated solution outlet.
In a kind of exemplary embodiment of the application, further includes: rainwater collection pool, the rainwater collection pool and described the
The connection of one pretreatment unit, first pretreatment unit are used to carry out place of settling to the rainwater collected in the rainwater collection pool
Reason.
In a kind of exemplary embodiment of the application, second pretreatment unit includes successively connecting according to water (flow) direction
Logical the second conditioning tank and remove hard unit.
In a kind of exemplary embodiment of the application, further includes:
Intermediate pool, the biochemical device, the intermediate pool and the filter device are sequentially communicated according to waste water flow direction.
In a kind of exemplary embodiment of the application, further includes:
Reuse pool, the reuse pool and the recycle-water outlet.
Technical solution provided by the present application can achieve it is following the utility model has the advantages that
Waste water treatment system and wastewater treatment method provided herein, in dangerous waste disposal factory at each waste
When the waste water of reason system discharge is handled, it is useless to difference respectively that the first pretreatment unit and the second pretreatment unit can be first passed through
The waste water of object processing system discharge is pre-processed, and then passes through biochemical device, filter device and evaporated crystallization device difference again
Biochemical treatment, filtration treatment and evaporative crystallization processing are carried out to pretreated waste water, waste water meets use so that treated
Water quality standard is conducive to the purpose for realizing that entire dangerous waste disposal factory realizes wastewater zero discharge in this way.In addition, different waste processing system
The waste water of system discharge is handled using same biochemical device, filter device and evaporated crystallization device, can be realized waste water zero
While the purpose of discharge, the cost of waste water treatment system can be also reduced, and can also reduce occupied by waste water treatment system
Space.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.It should be evident that the accompanying drawings in the following description is only the application
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the system diagram of waste water treatment system described in the embodiment of the present application.
Description of symbols:
10, the first pretreatment unit；101, the first conditioning tank；102, air flotation cell；103, materialization unit；11, second is pre-
Processing unit；111, the second conditioning tank；112, hard unit is removed；12, biochemical device；121, anoxic pond；122, aerobic tank；123, film
Biological reaction pool；13, filter device；131, nano-filtration unit；132, reverse osmosis units；133, liquid case is concentrated；14, evaporative crystallization fills
It sets；15, sludge storage pool；16, sludge dehydration device；17, rainwater collection pool；18, intermediate pool；19, reuse pool.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the application will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures
On, or refer to that certain structure is " direct " and be arranged in other structures, or refer to that certain structure is arranged by the way that another structure is " indirect " in other knots
On structure.
Term "one", " one ", "the", " described " to indicate there are one or more elements/component part/etc.；With
Language " comprising " and " having " is to indicate the open meaning being included and refer to element/composition portion in addition to listing
Also may be present except divide/waiting other element/component part/etc.；Term " first " and " second " etc. are only used as label, no
It is the quantity limitation to its object.
The waste water of dangerous waste disposal factory be mainly derived from the draining of chilling tower and wet process extracting tower in burning processing system,
Flue gas with water, heavy metal-containing waste water, dump truck car wash water, incineration plants ground flushing water, the draining of chemical examination laboratory building, safety
Landfill percolate, initial rainwater (referring to preceding 10~20 minutes rainwater near on-site main production plant) and life are useless
Water etc..Since material source, type, characteristic and the disposing technique by dangerous waste disposal factory are influenced, waste water has water quality, water
Fluctuation is big, and pollutant component is complicated, and the content of beary metal such as chromium, cadmium, arsenic, mercury, lead, zinc, barium are high, and salinity is high, and organic matter is high, with
And the typical features such as biodegradability difference, it is simple to be difficult to realize stablize by biological effluent treatments techniques such as conventional activated sludge processes
Qualified discharge or reuse；Although and it is fine to handle waste water effect using the physico-chemical process such as redox, flocculation merely, adds medicament
Type is more, dosage is big, operating cost is high.
In addition, in the related technology, for dangerous waste disposal factory wastewater treatment primarily directed to some waste processing system
The waste water of system discharge is handled, but since the waste component that different waste processing system is discharged in dangerous waste disposal factory is endless
It is exactly the same, therefore, when the wastewater treatment of the dangerous waste disposal factory is directed to the waste water of other waste treatment systems discharge, processing effect
Fruit is poor, is unfavorable for realizing that entire dangerous waste disposal factory realizes wastewater zero discharge.
In order to solve the above technical problems, the embodiment of the present application provides a kind of waste water treatment system, which is used
The waste water of each waste treatment system discharge is handled in dangerous waste disposal factory.
It is described in detail, as shown in Figure 1, the waste water treatment system may include the first pretreatment unit 10, biochemical device 12, mistake
Filter device 13, evaporated crystallization device 14 and the second pretreatment unit 11, in which:
First pretreatment unit 10 is mainly used for carrying out precipitation process to first kind waste water, to remove in first kind waste water
Oil slick, suspended material and heavy metal ion, the first kind waste water of first pretreatment unit 10 processing can be production waste water, this life
Producing waste water may include workshop flushing, laboratory draining, percolate and unaccounted-for water amount etc..
For example, the first pretreatment unit 10 may include the first conditioning tank 101 being sequentially communicated by waste water flow direction, air bearing
Unit 102 and materialization unit 103.This first conditioning tank 101 be mainly used for adjust production waste water water quality (water quality includes waste water
In the indexs such as pH value), water, impact load brought by the variation to avoid raw water water and water quality, thus after guaranteeing
The stable operation of continuous processing, the production waste water after adjusting enter air flotation cell 102；After this air flotation cell 102 is for removing adjusting
Production waste water in oil slick and partial suspended substance (Suspended Solids, abbreviation: SS)；And materialization unit 103 is used for
Materializing strategy is carried out to through treated the waste water of air flotation cell 102.
Specifically, the method for the materializing strategy can include: can first pass through add reducing agent into waste water first, so that waste water
The Cr of middle hypertoxicity6+It is converted into Cr3+；Then by adding precipitating reagent into waste water, so that the heavy metal ion in waste water is formed
The deposit of slightly solubility；Again by adding flocculant, flocculation aid, so that precipitated metal substance is polymerized to bulky grain wadding body, most
After can pass through gravitational settling effect realize mud-water separation.Wherein, the materialization unit 103 may include the first sludge outlet and with biochemistry
The first wastewater outlet that device 12 is connected to, the sludge isolated by materialization unit 103 can be discharged by the first sludge outlet, and
" urban sewage reutilization industry water standard " standard is not up to by the waste water that materialization unit 103 is isolated detecting
When, the waste water isolated by materialization unit 103 can be expelled to biochemical device 12 by the first wastewater outlet, the biochemical device 12
Subsequent processing can be carried out to this waste water.It should be noted that the method for the materializing strategy is not limited to method mentioned above, depending on tool
Depending on body situation, and referring herein to sludge refer to bulky grain wadding body not soluble in water.In addition, detecting materialization unit
103 waste water isolated can be directly used for reuse in factory when reaching " urban sewage reutilization industry water standard " standard.
Second pretreatment unit 11 is mainly used for carrying out the second class waste water except hard processing, solid to reduce dissolubility in waste water
The content of body, this second class waste water may include that the dissolubilities such as incineration plants sewage, deodorization and washing draining, materialization workshop sewage are always solid
Body (Total dissolved solids, abbreviation: TDS) high waste water of content.
For example, this second pretreatment unit 11 may include flowing to the second conditioning tank 111 being sequentially communicated according to waste water
And remove hard unit 112.This second conditioning tank 111 for the second class waste water being adjusted and homogeneous, to avoid raw water water and
Impact load brought by the variation of water quality, to guarantee the stable operation of subsequent processing, the second class waste water after adjusting can be into
Enter to remove hard unit 112；It should can be used for carrying out the second class waste water except hard unit 112 except hard processing, to reduce in the second class waste water
Total hardness, thus avoid follow up device occur fouling, blocking the case where.
It specifically, should may include by adding into the second class waste water such as sodium carbonate Na except the method handled firmly2CO3Equal alkali
Substance adjusts the pH value of the second class waste water, and the calcium ions and magnesium ions in the second class waste water is promoted to form magnesium hydroxide Mg (OH)2、
Calcium hydroxide Ca (OH)2Equal sediments, are then filtered.Wherein, filtered sediment can be discharged except hard unit 112,
And when detecting that the waste water except hard 112 output of unit is not up to " urban sewage reutilization industry water standard " standard, it removes
The waste water of 112 output of hard unit can enter in evaporated crystallization device 14, after which can carry out this waste water
Continuous processing.
It should be noted that it should be not limited to method mentioned above except the method handled firmly, it is depending on the circumstances.This
Outside, detect except hard unit 112 treated waste water reaches " urban sewage reutilization industry water standard " standard when can
It is directly used in reuse in factory.
Biochemical device 12 can be connected to the first pretreatment unit 10 and the second pretreatment unit 11.And the biochemical device 12 is used
In to through the first pretreatment unit 10 treated waste water and the second pretreatment unit 11, treated that waste water carries out biochemical treatment,
To reduce (the Chemical Oxygen Demand of COD in waste water；Abbreviation: COD) concentration.
For example, this biochemical device 12 may include the anoxic pond 121 being sequentially communicated according to waste water flow direction, aerobic tank 122
And membrane biological reaction pond 123.Wherein:
The anoxic pond 121 can be used high-performance bio filler and carry out anoxic biochemical treatment to the waste water in anoxic pond 121, will
Insoluble hydrolysis of organic matter guarantees the place of subsequent aerobic tank 122 to improve the biochemical of waste water for solable matter in waste water
Manage effect.
The big high-performance bio filler of high porosity, surface area can be used to through anoxic pond 121, that treated is useless in aerobic tank 122
Water carries out aerobic treatment, in favor of the apposition growth of biomembrane, wherein the organic matter in waste water is by microorganism on biomembrane
Absorption, oxygenolysis, while by the nitrification of biology and organic matter degradation effect, achieve the purpose that biological denitrificaion.
The second wastewater outlet that may include the second sludge outlet in membrane biological reaction pond 123 and be connected to filter device 13,
And the membrane biological reaction pond 123 is mountable membrane bioreactor (Membrane Bio-Reactor, abbreviation: MBR), passes through film
The efficient retention of bioreactor, so that maintaining higher microbial biomass in membrane biological reaction pond 123, wherein membrane biological reaction
Biological floe, suspended matter, pathogen and the macromolecular dissolved organic matter of device retention can be discharged by the second sludge outlet, and
When detecting membrane biological reaction pond 123 treated that waste water is not up to " urban sewage reutilization industry water standard " standard,
The waste water of the membrane bioreactor output can be expelled in filter device 13 by the second wastewater outlet, to pass through filter device 13
Subsequent processing is carried out to the waste water.
It should be noted that the biochemical device 12 can be pre- to the first pretreatment unit 10 treated waste water and second simultaneously
Treated the waste water of processing unit 11 carries out biochemical treatment, can also be respectively to the first pretreatment unit 10 treated waste water and the
Two pretreatment units 11 treated waste water carries out biochemical treatment.And the processing method of the biochemical device 12 be not limited to it is mentioned above
Method, it is depending on the circumstances.In addition, detecting membrane biological reaction pond 123 treated that waste water reaches that " municipal sewage is again
Make profits with industry water standard " standard when can be directly used for reuse in factory.
Filter device 13 can be connected to biochemical device 12, and the filter device 13 includes that reuse water out and concentrate go out
Mouthful.Wherein, which is used for through biochemical device 12, treated that waste water is filtered processing, with obtain recycle-water with
Concentrate, this recycle-water can be discharged by reuse water out, and concentrate can be discharged by concentrated solution outlet.
For example, which may include nano-filtration unit 131, reverse osmosis units 132 and liquid case 133 is concentrated, this
Nano-filtration unit 131 and reverse osmosis units 132 are sequentially communicated according to waste water flow direction, and reverse osmosis units 132 include reuse water out；
And liquid case 133, which is concentrated, to be connected to nano-filtration unit 131 and reverse osmosis units 132, wherein concentrate in nano-filtration unit 131 and
Concentrate in reverse osmosis units 132 can flow into concentration liquid case 133, and the concentration liquid case 133 is dense including being previously mentioned
The outlet of contracting liquid.Specifically:
Nano-filtration unit 131 can be effectively removed for membrane separation device according to the UF membrane principle of nano-filtration unit 131
COD in waste water, to prevent reverse osmosis units 132 from cleaning frequent situation, to can guarantee that subsequent reverse osmosis units 132 are stablized
Operation.It should be noted that the production water of nano-filtration unit 131 can enter in reverse osmosis units 132, and in nano-filtration unit 131
Concentrate can be expelled in concentration liquid case 133.
Reverse osmosis units 132 can be that membrane separation device can be effectively according to the UF membrane principle of reverse osmosis units 132
Various ions, inorganic matter and small organic molecule etc. in waste water is trapped in concentrate side, to improve producing water water quality.Wherein,
Concentrate in reverse osmosis units 132 can be expelled in concentration liquid case 133, and the production water of reverse osmosis units 132 can pass through reuse
Water out discharge, the production water of the reverse osmosis units 132 have reached " urban sewage reutilization industry water standard " standard, therefore
It can be directly used for reuse in factory.
Optionally, which may also include reuse pool 19, this reuse pool 19 can be with filter device 13
Recycle-water outlet, for storing the recycle-water of 13 output of filter device.It should be noted that the reuse pool 19 can not only
Enough store the recycle-water of 13 output of filter device, it can also be used to store the first pretreatment unit 10, the second pretreatment unit 11, life
The water for meeting " urban sewage reutilization industry water standard " standard of 12, evaporated crystallization device, 14 output is set in makeup.This time
It can be directly used for reuse in factory with the water stored in pond 19.
It should be understood that nano-filtration unit 131 and reverse osmosis units 132 are after certain runing time, the nanofiltration list
Membrane component in member 131 and reverse osmosis units 132 will receive dirt and block up, and water yield is gradually reduced.For control nano-filtration unit 131 and instead
Permeation unit 132 pollutes, and restores the water yield of membrane component, and regular (the usual period is 3~6 months) is needed to use the medicines such as acid, alkali
Agent carries out chemical cleaning to the membrane component in nano-filtration unit 131 and reverse osmosis units 132, and the waste water after cleaning can lead to after collecting
It crosses this waste water treatment system and re-starts processing.
Further, which may also include the sterili-sation unit and security personnel's filtering being sequentially communicated by waste water flow direction
Device, the sterili-sation unit are connected to nano-filtration unit 131, and cartridge filter is connected to reverse osmosis units 132.Wherein, nano-filtration unit 131
Production water can first pass through sterili-sation unit sterilization processing, be then pumped into after further being filtered in cartridge filter and be pumped into again
In reverse osmosis units 132.Specifically, the method for the sterilization processing can be to add antisludging agent into the production water of nano-filtration unit 131, go back
Former agent and non-oxidative antimicrobial carry out reduction sterilization processing to the production water of nano-filtration unit 131 to realize.
In one embodiment, waste water treatment system may also include intermediate pool 18, the biochemical device 12, intermediate pool 18 and
Filter device 13 is sequentially communicated according to waste water flow direction.That is, the water of 12 output of biochemical device can be first flowed into intermediate pool
18, by adding antisludging agent, reducing agent and non-oxidative antimicrobial into intermediate pool 18, to realize the production water to biochemical device 12
Carry out reduction sterilization processing.It should be noted that the waste water after restoring sterilization processing can be filtered simultaneously by cartridge filter
It is pumped into filter device 13.
Evaporated crystallization device 14 may include the first import, the second import and condensation-water drain, first import can with it is aforementioned
The concentrated solution outlet connection mentioned, the second import can be connected to the second pretreatment unit 11, and the condensation-water drain can be with biochemistry
Device 12 is connected to.Wherein, evaporated crystallization device 14 be used for enter from the first import and the second import waste water (that is: for pair
The production water of filter device 13 and the production water of the second pretreatment unit 11) it is evaporated crystallization treatment, to obtain steam and crystalline solid.
When steam does not meet water supply standard, this water supply standard is " urban sewage reutilization industry water standard " standard, steam energy
Biochemical device 12 is enough back to by condensation-water drain, in order to continue biochemical treatment, to reach the mesh of wastewater zero discharge
's；When steam meets water supply standard, which can be after cooling system be cooling for reuse in factory.And crystalline solid can be from evaporation
Crystallization apparatus 14 is expelled to solidification workshop.
It, can when the waste water of each waste treatment system discharge is handled in dangerous waste disposal factory in the present embodiment
The first pretreatment unit 10 and the second pretreatment unit 11 is first passed through respectively to carry out the waste water of different waste processing system discharge
Pretreatment, then again by biochemical device 12, filter device 13 and evaporated crystallization device 14 respectively to pretreated waste water into
Row biochemical treatment, filtration treatment and evaporative crystallization processing, so that treated, waste water meets water supply standard, is conducive to realize in this way
Entire dangerous waste disposal factory realizes the purpose of wastewater zero discharge.And the waste water treatment system is handled using physico-chemical process and biochemical method
Waste water, so that the purpose of efficient, stable economic treatment waste water can be realized.In addition, the waste water of different waste processing system discharge is adopted
It is handled with same biochemical device 12, filter device 13 and evaporated crystallization device 14, in the mesh that can be realized wastewater zero discharge
While, can also reduce the cost of waste water treatment system, and the occupied space of waste water treatment system can also be reduced.
In one embodiment, which may also include sludge storage pool 15 and sludge dehydration device 16.Wherein, should
Sludge storage pool 15 can be connected to the first sludge mouth and/or the second sludge mouth, that is to say, that the sludge that materialization unit 103 is isolated
Biological floe, the suspended matter, disease of the retention of in sludge storage pool 15 and/or membrane biological reaction pond 123 can be drained by the first sludge mouth
Substance and macromolecular dissolved organic matter can be expelled in sludge storage pool 15 by the second sludge outlet.And sludge dehydration device 16
It can be connected to sludge storage pool 15, for being carried out dehydrating to the sludge in sludge storage pool 15, the sewage after dehydration is through receiving
Processing can be re-started after collection by this waste water treatment system；Sludge after dehydration can be processed to mud cake, this mud cake can
Outlet duct solidifies workshop.
In addition, waste water treatment system may also include rainwater collection pool 17 in this implementation, this rainwater collection pool 17 and first is in advance
Processing unit 10 is connected to, which is used to carry out precipitation process to the rainwater collected in rainwater collection pool 17,
To remove the suspended material and heavy metal ion in rainwater.That is, the waste water treatment system not only can to production waste water,
Incineration plants sewage, deodorization and washing draining, materialization workshop sewage etc. are handled, but also can be handled rainwater, so that
Recycle-water reuse that treated is to plant area's water spot, to realize dangerous waste disposal factory waste water zero discharge.As shown in Figure 1, should
Rainwater collection pool 17 can be connected to the air flotation cell 102 in the first pretreatment unit 10.
It should be noted that the waste water treatment system can also be handled sanitary sewage, sanitary sewage passes sequentially through life
Makeup can be used for reuse in factory after setting 14 evaporative crystallization of 12 biochemical treatments, 13 filtration treatment of filter device and evaporated crystallization device.
In one embodiment, the waste water of each waste treatment system discharge may include that production is useless in dangerous waste disposal factory
Water, biochemical sewage, the draining of materialization workshop spent acid alkali, incineration system draining and deodoration system washing draining etc., wherein each waste water water
Matter is as follows:
It produces in waste water (workshop flushing, laboratory draining, percolate and unaccounted-for water amount), COD:2000mg/L, SS:
800mg/L；
In biochemical sewage, COD:400mg/L, BOD (Biochemical Oxygen Demand, biochemical oxygen demand (BOD)):
220mg/L, SS:200mg/L, NH3- N (ammonia-nitrogen content): 25mg/L；
In the draining of materialization workshop spent acid alkali, COD:2000mg/L, SS:500mg/L, TDS:80000mg/L；
In incineration system draining, COD:800mg/L, SS:400mg/L, TDS:80000mg/L；
In deodoration system washing draining, COD:800mg/L, TDS:50000mg/L, NH3-N:25mg/L.
Above-mentioned waste water can reach " urban sewage reutilization industrial water water by the waste water treatment system in the present embodiment
Matter " standard, this standard is as follows:
PH (pH value) be 6.5~9, SS≤30mg/L, turbidity≤5NTU, COD≤60mg/L, NH3-N≤10mg/L,
TDS≤1000mg/L, petroleum-type≤1mg/L, total hardness (in terms of CaCO3)≤450mg/L.
In addition, the embodiment of the present application also provides a kind of wastewater treatment methods comprising following steps:
S200 carries out precipitation process to waste water in the first pretreatment unit 10；
S202 carries out except hard processing waste water in the second pretreatment unit 11；
S204, by 12 pairs of biochemical device through the first pretreatment unit 10 treated waste water and the second pretreatment unit 11
Treated carries out biochemical treatment；
S206, using 13 pairs of filter device, through biochemical device 12, treated that waste water is filtered processing, to obtain reuse
Water and concentrate；
S208, by evaporated crystallization device 14 respectively to the obtained concentrate after the processing of filter device 13 and to through the
Treated that waste water is evaporated crystallization treatment for two pretreatment units 11, to obtain steam and crystalline solid；
Wherein, when steam does not meet water supply standard, opposing steam flow to biochemical device 12 carries out biochemical treatment.
It should be noted that the wastewater treatment method can be applied to waste water treatment system described in above-described embodiment, because
This, no longer elaborates herein.In addition, step S200 and step S202 are in no particular order, can also carry out simultaneously.
Those skilled in the art will readily occur to the application after considering specification and practicing utility model disclosed herein
Other embodiments.This application is intended to cover any variations, uses, or adaptations of the application, these modifications are used
Way or adaptive change follow the application general principle and including the application it is undocumented in the art known in
Common sense or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by institute
Attached claim is pointed out.
Claims (10)
1. a kind of waste water treatment system characterized by comprising
First pretreatment unit, for carrying out precipitation process to first kind waste water；
Second pretreatment unit, for carrying out the second class waste water except hard processing；
Biochemical device is connected to first pretreatment unit and second pretreatment unit, and for through described first
Treated that waste water carries out biochemical treatment for pretreatment unit treated waste water and second pretreatment unit；
Filter device is connected to the biochemical device, and the filter device includes reuse water out and concentrated solution outlet, described
Filter device is used for through the biochemical device, treated that waste water is filtered processing, to obtain recycle-water and concentrate；
Evaporated crystallization device, the evaporated crystallization device include the first import, the second import and condensation-water drain, described first into
Mouthful be connected to the concentrated solution outlet, second import is connected to second pretreatment unit, the condensation-water drain and
The biochemical device connection；
Wherein, the evaporated crystallization device is used to be evaporated the waste water entered from first import and second import
Crystallization treatment, to obtain steam and crystalline solid, when the steam does not meet water supply standard, the steam can be by described cold
Condensate outlet return is to the biochemical device.
2. waste water treatment system according to claim 1, which is characterized in that
First pretreatment unit includes flowing to the first conditioning tank, air flotation cell and the materialization unit being sequentially communicated by waste water,
The materialization unit includes the first sludge outlet and the first wastewater outlet, and first wastewater outlet and the biochemical device connect
It is logical.
3. waste water treatment system according to claim 2, which is characterized in that further include:
Sludge storage pool is connected to first sludge mouth；
Sludge dehydration device is connected to the sludge storage pool, for being carried out dehydrating to the sludge in the sludge storage pool.
4. waste water treatment system according to claim 1, which is characterized in that the biochemical device includes flowing to according to waste water
Anoxic pond, aerobic tank and the membrane biological reaction pond being sequentially communicated, the membrane biological reaction pond include the second sludge outlet and second
Wastewater outlet, second wastewater outlet are connected to the filter device.
5. waste water treatment system according to claim 4, which is characterized in that further include:
Sludge storage pool is connected to second sludge mouth；
Sludge dehydration device is connected to the sludge storage pool, for being carried out dehydrating to the sludge in the sludge storage pool.
6. waste water treatment system according to claim 1, which is characterized in that
The filter device includes the nano-filtration unit being sequentially communicated according to waste water flow direction and reverse osmosis units, the reverse osmosis units
Including the reuse water out；
And the filter device further includes concentration liquid case, the concentration liquid case can be with the nano-filtration unit and the reverse osmosis units
It being connected to, the concentrate in concentrate and the reverse osmosis units in the nano-filtration unit can flow into the concentration liquid case,
And the concentrate case includes the concentrated solution outlet.
7. waste water treatment system according to claim 1, which is characterized in that further include:
Rainwater collection pool, the rainwater collection pool are connected to first pretreatment unit, and first pretreatment unit is used for
Precipitation process is carried out to the rainwater collected in the rainwater collection pool.
8. waste water treatment system according to claim 1, which is characterized in that second pretreatment unit includes according to water
The second conditioning tank and remove hard unit that stream direction is sequentially communicated.
9. waste water treatment system according to claim 1, which is characterized in that further include: intermediate pool, the biochemical dress
It sets, the intermediate pool and the filter device are sequentially communicated according to waste water flow direction.
10. waste water treatment system according to claim 1, which is characterized in that further include:
Reuse pool, the reuse pool and the recycle-water outlet.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734255A (en) * | 2019-03-11 | 2019-05-10 | 中国恩菲工程技术有限公司 | Waste water treatment system and wastewater treatment method |
| CN111453830A (en) * | 2020-03-20 | 2020-07-28 | 安徽实朴检测技术服务有限公司 | Laboratory acidic wastewater treatment equipment and method |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734255A (en) * | 2019-03-11 | 2019-05-10 | 中国恩菲工程技术有限公司 | Waste water treatment system and wastewater treatment method |
| CN111453830A (en) * | 2020-03-20 | 2020-07-28 | 安徽实朴检测技术服务有限公司 | Laboratory acidic wastewater treatment equipment and method |
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