CN206666261U - A kind of viscose fiber acid waste water processing unit - Google Patents

A kind of viscose fiber acid waste water processing unit Download PDF

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Publication number
CN206666261U
CN206666261U CN201720422886.8U CN201720422886U CN206666261U CN 206666261 U CN206666261 U CN 206666261U CN 201720422886 U CN201720422886 U CN 201720422886U CN 206666261 U CN206666261 U CN 206666261U
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outlet
membrane
waste water
filter
viscose fiber
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CN201720422886.8U
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唐礼升
陈艳君
张文斌
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Nanjing Titanium Net Fluid Technology Co Ltd
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Nanjing Titanium Net Fluid Technology Co Ltd
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Abstract

The utility model discloses a kind of viscose fiber acid waste water processing unit, including multimedium filter, milipore filter, NF membrane, one-level production pond, booster pump, RO reverse osmosis membranes and recovery water storage tank;The outlet of multimedium filter and the inlet communication of milipore filter;The outlet of milipore filter and the inlet communication of NF membrane;The inlet communication of the outlet of NF membrane and one-level production pond;The outlet in one-level production pond and the inlet communication of booster pump;The outlet of booster pump and the inlet communication of RO reverse osmosis membranes, the outlet of RO reverse osmosis membranes connect with reclaiming the water inlet of water storage tank.The devices such as more medium filter, milipore filter, NF membrane and RO reverse osmosis membranes are used in combination the utility model viscose fiber acid waste water processing unit, technological process is simple, device sets reasonable, solves the neutralization precipitation pool device processing viscose fiber acid waste water used at this stage and secondary pollution problems caused by the high cost burden brought, the lime mud that can not largely use, and the waste water handled through the utility model can recycle, good purification, efficiency high, reduce water resource waste, energy-conserving and environment-protective.

Description

A kind of viscose fiber acid waste water processing unit
Technical field
A kind of viscose fiber acid waste water processing unit is the utility model is related to, belongs to field of waste water treatment.
Background technology
Viscose rayon (staple fibre) and synthetic fibers belong to chemical fibre, wherein, synthetic fibers using oil product as Raw material, i.e., in the future at last can be by raw material from petrochemical industry downstream product, but as worldwide energy supply day is becoming tight Restriction;The raw materials for production of viscose rayon are natural materials, aboundresources, regenerating easily, thus the viscose glues such as Cotton Pulp, wood pulps Fiber is called regenerated celulose fibre, and the property of product is occupied importantly near or above natural cotton fiber in chemical fibre Position.With the requirement more and more higher of the quality and quantity to textile, development to the inexhaustible viscose rayon of resource increasingly by Pay attention to various countries.
Viscose rayon production is the very big production process of a water consumption, and the amount of industrial wastewater of discharge is very big, and waste water Complicated component, biodegradability is poor, if directly discharge can cause serious pollution to environment.Wastewater from viscose fiber producing is broadly divided into Acid waste water and the major class of alkaline waste water two, wherein, acid waste water is derived mainly from spinning workshop, acid station and subsequent treatment process, bag Include plasticizing-bath and overflow water, spinning-drawing machine wastewater eluting, acid bathing filter washes, post-process preceding road and wash a waste water, pickling waste waters Deng.The major pollutants of acid waste water are sulfuric acid, sulfate and zinc ion.These viscose fiber acid waste waters are mostly adopted at this stage Handled with lime neutralization precipitation method, but need to consume substantial amounts of lime in this way, not only aggravated the production of enterprise Cost burden, and substantial amounts of lime mud is produced, it can not use and cause secondary pollution.In most cases, it is useless through processing Water is all directly to discharge, and causes the waste of water resource.China's shortage of water resources, the situation is tense, in national energy-saving emission reduction policy Overall background under, reduce disposal of pollutants, farthest carry out process water recycling, reduce from natural water source without section The intake of system, limited water is used for the most basic living necessities of the mankind.
Utility model content
In order to solve the problems, such as that viscose fiber acid waste water is difficult in the prior art, alkali consumption is big and water resource waste, The utility model provides a kind of viscose fiber acid waste water processing unit.
In order to solve the above technical problems, technical scheme is as follows used by the utility model:
A kind of viscose fiber acid waste water processing unit, including multimedium filter, milipore filter, NF membrane, one-level production pond, Booster pump, RO reverse osmosis membranes and recovery water storage tank;The outlet of multimedium filter and the inlet communication of milipore filter;The outlet of milipore filter With the inlet communication of NF membrane;The inlet communication of the outlet of NF membrane and one-level production pond;One-level produces the outlet and supercharging in pond The inlet communication of pump;The outlet of booster pump and the inlet communication of RO reverse osmosis membranes, outlet and the recovery water storage tank of RO reverse osmosis membranes Water inlet connection.
Using the method for said apparatus processing viscose fiber acid waste water processing, comprise the following steps:
1) viscose fiber acid waste water is sent into multimedium filter and carries out filtration treatment, obtain filtrate 1;
2) filtrate 1 is sent into ultrafiltration membrance filter processing, obtains permeate 2;
3) it will transmit through liquid 2 and be sent into nanofiltration membrane processing, obtain permeate 3, and add spent lye thereto and adjust PH into Property, it is then sent to one-level production pond;
4) waste water that one-level is produced in pond is delivered into the further filtration treatment of RO reverse osmosis membranes, the clear liquid of transmission enters recovery Water storage tank directly recycles, and can be directly used for the production of viscose fiber, also can be directly used for other industrial productions.
Viscose fiber acid waste water is containing sulfuric acid and contains the waste water of dissolubility polyvalent mineral salt.
In order to further improve clean-up effect, viscose fiber acid waste water processing unit, in addition to sedimentation basin and raw water pump, The outlet of sedimentation basin and the inlet communication of raw water pump, the outlet of raw water pump and the inlet communication of multimedium filter.
Viscose fiber acid waste water first delivers to sedimentation basin to remove big of mud, fiber etc. before multimedium filter is entered Grain material, reduces multimedium filter load, extends its life-span.
In order to further improve the recycling of the clean-up effect of water and water, the filter material layer of multimedium filter includes quartz sand Layer and anthracite coal measure.The floor height of quartz sand layer is 800mm, and the floor height of anthracite coal measure is 400mm.
Further preferably, milipore filter is the ceramic membrane that aperture is 50-200nm.
Pretreatment unit of the milipore filter as NF membrane, can be with the solid granulates in effectively catching water, bacterium, macromolecule Organic matter etc., protect subsequent nano-filtration film and reverse osmosis membrane not contaminated to greatest extent and block, greatly prolong nanofiltration system Life-span.
In order to further improve clean-up effect and efficiency, above-mentioned viscose fiber acid waste water processing unit, in addition to centre Pond and middle water pump, the outlet of milipore filter and the inlet communication of intermediate pool;The outlet of intermediate pool and entering for middle water pump Mouth connection;The outlet of middle water pump and the inlet communication of NF membrane.
The permeate 2 of milipore filter is sent into intermediate pool, and the concentrate discharge of milipore filter carries out subsequent treatment.
In order to further improve the recovery utilization rate of water, RO reverse osmosis membranes also connect with intermediate pool.The work of intermediate pool With being exactly mainly:The concentrate mixing buffering that the clear liquid and RO reverse osmosis membranes come out from milipore filter comes out.
The concentrate of RO reverse osmosis membranes is back to the intermediate pool between milipore filter and NF membrane;The clear liquid of RO reverse osmosis membranes Water quality is slightly below desalted water index, can directly reclaim and make process water use.
In order to further improve clean-up effect, the water inlet of sedimentation basin is provided with the screen pack of 150-200 mesh.
In order to further improve clean-up effect, while the service life of extension fixture, the NF membrane is acidproof NF membrane.
NF membrane is reached to sulfate and polyvalent metal ion rejection up to more than 95%, sulfuric acid rejection up to more than 50%, The concentrate discharge of NF membrane carries out subsequent treatment.
Pickling waste waters in future self-adhesive fibre manufacturing technique is first delivered to sedimentation basin of the present utility model and precipitated, and treats After mud therein, other heavier large particulate matters depositions, the waste water on top is pumped to multimedium filter by raw water and carried out Filtration treatment, wherein, the filter material layer of multimedium filter is quartz sand+anthracite, and padding layer is that two-speed type filter emits (material PP).It is logical The filtrate of excessive media filter delivers to ceramic super-filtering film filtration treatment, and membrane aperture is 200nm.The milipore filter is as subsequent nano-filtration film And the pretreatment unit of reverse osmosis membrane, can with materials such as bacterium, the organic matter of macromolecule and the colloids in effectively catching waste water, Reduce subsequent nano-filtration film and reverse osmosis membrane pollution and block, the life-span of nanofiltration and counter-infiltration system can be greatly prolonged.The milipore filter Concentrate discharge carry out subsequent treatment, permeate first delivers to intermediate pool, is mixed with the concentrate from reverse osmosis membrane backflow so far Close, be then sent to acidproof nanofiltration membrane processing.NF membrane can retain more than 95% sulfate and polyvalent metal ion, such as ZnSO4、Na2SO4, silicate, SO4 2-、Fe3+、Zn2+Deng and more than 50% sulfuric acid, concentrate, which is then discharged, subsequently to be located Manage, part of sulfuric acid is comprised only in permeate, add spent lye thereto and adjust PH to neutrality, be then sent to one-level production pond.It is logical Cross booster pump and the waste water in one-level production pond is delivered into the further filtration treatment of RO reverse osmosis membranes.The concentrate backflow of reverse osmosis membrane To the intermediate pool between milipore filter and NF membrane, desalted water index is just slightly below through the clear liquid water quality of reverse osmosis membrane, directly Process water use is made in recovery.Pickling waste waters in the viscose fiber technique is after method of the present utility model processing, salt rejection rate >=98%, Water Sproading rate >=75%, can not only effectively treatment of acidic wastewater, reduce sewage discharge, and recyclable big portion Division technique water greatly reduces entreprise cost, environmental protection and energy saving to recycle.
The NM technology of the utility model is with reference to prior art.
The utility model viscose fiber acid waste water processing unit is anti-by more medium filter, milipore filter, NF membrane and RO The devices such as permeable membrane are used in combination, and technological process is simple, and it is reasonable that device is set, and solve the neutralization precipitation pond dress used at this stage Secondary pollution etc. caused by putting the high cost burden for handling viscose fiber acid waste water and bringing, the lime mud that can not largely use Problem, and the waste water handled through the utility model can recycle, good purification, efficiency high, reduce water resource wave Take, energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is the utility model viscose fiber acid waste water processing device structure diagram;
Fig. 2 is the workflow diagram of the utility model viscose fiber acid waste water processing unit;
In figure, 1 it is sedimentation basin, 2 is raw water pump, 3 is multimedium filter, 4 is milipore filter, 5 is intermediate pool, 6 is middle Water pump, 7 be NF membrane, 8 be one-level production pond, 9 be booster pump, 10 be RO reverse osmosis membranes, 11 be recovery water storage tank, 12 be filtering Net.
Embodiment
In order to more fully understand the utility model, content of the present utility model is furtherd elucidate with reference to embodiment, but Content of the present utility model is not limited solely to the following examples.
Embodiment 1
As illustrated, viscose fiber acid waste water processing unit, including the production of multimedium filter, milipore filter, NF membrane, one-level Pond, booster pump, RO reverse osmosis membranes and recovery water storage tank;The outlet of multimedium filter and the inlet communication of milipore filter;Milipore filter Outlet and NF membrane inlet communication;The inlet communication of the outlet of NF membrane and one-level production pond;One-level produces the outlet in pond With the inlet communication of booster pump, the outlet of booster pump and the inlet communication of R O reverse osmosis membranes, the outlet and recovery of RO reverse osmosis membranes The water inlet connection of water storage tank.
The filter material layer of multimedium filter includes quartz sand layer and anthracite coal measure.Milipore filter is the ceramic membrane that aperture is 200nm. NF membrane is acidproof NF membrane.
NF membrane is reached to sulfate and polyvalent metal ion rejection up to more than 95%, sulfuric acid rejection up to more than 50%, The concentrate discharge of NF membrane carries out subsequent treatment.
Using the method for said apparatus processing viscose fiber acid waste water processing, comprise the following steps:
1) viscose fiber acid waste water is sent into multimedium filter and carries out filtration treatment, obtain filtrate 1;
2) filtrate 1 is sent into ultrafiltration membrance filter processing, obtains permeate 2;
3) it will transmit through liquid 2 and be sent into nanofiltration membrane processing, obtain permeate 3, and add spent lye thereto and adjust PH into Property, it is then sent to one-level production pond;
4) waste water that one-level is produced in pond is delivered into the further filtration treatment of RO reverse osmosis membranes, the clear liquid of transmission enters recovery Water storage tank directly recycles, and can be directly used for the production of viscose fiber acid, also can be directly used for other industrial productions.
Embodiment 2
It is substantially the same manner as Example 1, except that:Viscose fiber acid waste water processing unit, in addition to sedimentation basin and Raw water pump, the outlet of sedimentation basin and the inlet communication of raw water pump, the outlet of raw water pump and the inlet communication of multimedium filter.Viscose glue Chemical fibre acid waste water first delivers to sedimentation basin to remove the large particulate matters such as mud, fiber before multimedium filter is entered, and reduces The load of multimedium filter, extend its life-span.
Embodiment 3
It is substantially the same manner as Example 2, except that:Viscose fiber acid waste water processing unit, in addition to intermediate pool And middle water pump, the outlet of milipore filter and the inlet communication of intermediate pool;The outlet of intermediate pool and the import of middle water pump connect It is logical;The outlet of middle water pump and the inlet communication of NF membrane;RO reverse osmosis membranes also connect with intermediate pool.The permeate of milipore filter 2 are sent into intermediate pool, and the concentrate discharge of milipore filter carries out subsequent treatment.The concentrate of RO reverse osmosis membranes be back to milipore filter with Intermediate pool between NF membrane;The clear liquid water quality of RO reverse osmosis membranes is slightly below desalted water index, can directly reclaim and be used as technique Water uses.
Embodiment 4
It is substantially the same manner as Example 3, except that:The water inlet of sedimentation basin is provided with the screen pack of 200 mesh.
Pickling waste waters in cellulose viscose manufacturing technique, main component composition are as shown in the table:
Analysis project Unit Pickling waste waters
Temperature 30~33
PH / 2.98
H2SO4 mg/L 637
Silicate ug/L 104.6
ZnSO4 mg/L 37.9
Na2SO4 mg/L 1201.8
Na+ mg/L 912
SO4 2- mg/L 1459.1
Cl- mg/L 2.5
Zn2+ mg/L 15.3
Ca2+ mg/L 0.8
Fe3+ mg/L 0.03
COD mg/L 8.8
Sulfide mg/L 1.28
Electrical conductivity μs/cm 4370
The sedimentation basin that pickling waste waters in future self-adhesive fibre manufacturing technique is first delivered in embodiment 4 is precipitated, and is treated After mud therein, other heavier large particulate matters depositions, the waste liquid on top is pumped to multimedium filter by raw water and carried out Filtration treatment, wherein, the filter material layer of multimedium filter is quartz sand (story height H=800mm)+anthracite (story height H=400mm), Padding layer is that two-speed type filter emits (material PP).Ceramic super-filtering film filtration treatment, membrane aperture are delivered to by the filtrate of multimedium filter It is 200nm.The milipore filter, can be with thin in effectively catching waste water as subsequent nano-filtration film and the pretreatment unit of reverse osmosis membrane The materials such as bacterium, the organic matter of macromolecule and colloid, reduce subsequent nano-filtration film and reverse osmosis membrane pollution and block, can greatly prolong Nanofiltration and the life-span of counter-infiltration system.The concentrate discharge of the milipore filter carries out subsequent treatment, and permeate first delivers to intermediate pool, Mixed with the concentrate from reverse osmosis membrane backflow so far, be then sent to acidproof nanofiltration membrane processing.NF membrane can retain More than 95% sulfate and polyvalent metal ion, such as ZnSO4、Na2SO4, silicate, SO4 2-、Fe3+、Zn2+Deng and 50% with On sulfuric acid, concentrate then discharges carry out subsequent treatment, part of sulfuric acid comprised only in permeate, adds spent lye regulation thereto PH is then sent to one-level production pond to neutrality.The waste water that one-level is produced in pond is delivered to by RO reverse osmosis membranes by booster pump and enters one Walk filtration treatment.The concentrate of reverse osmosis membrane is back to the intermediate pool between milipore filter and NF membrane, through reverse osmosis membrane Clear liquid water quality is just slightly below desalted water index, and process water use is made in directly recovery.Pickling waste waters in the viscose fiber technique After method of the present utility model processing, salt rejection rate >=98%, Water Sproading rate >=75%, spent acidic can not only be effectively handled Water, sewage discharge is reduced, and recyclable most of process water greatly reduces entreprise cost, environmental protection and energy saving to recycle.

Claims (9)

  1. A kind of 1. viscose fiber acid waste water processing unit, it is characterised in that:Including multimedium filter, milipore filter, NF membrane, one Level production pond, booster pump, RO reverse osmosis membranes and recovery water storage tank;The outlet of multimedium filter and the inlet communication of milipore filter;It is super The outlet of filter membrane and the inlet communication of NF membrane;The inlet communication of the outlet of NF membrane and one-level production pond;One-level production pond Outlet and the inlet communication of booster pump;Outlet and the inlet communications of RO reverse osmosis membranes of booster pump, the outlet of RO reverse osmosis membranes with Reclaim the water inlet connection of water storage tank.
  2. 2. viscose fiber acid waste water processing unit as claimed in claim 1, it is characterised in that:Also include sedimentation basin and raw water Pump, the outlet of sedimentation basin and the inlet communication of raw water pump, the outlet of raw water pump and the inlet communication of multimedium filter.
  3. 3. viscose fiber acid waste water processing unit as claimed in claim 1 or 2, it is characterised in that:The filter of multimedium filter The bed of material includes quartz sand layer and anthracite coal measure.
  4. 4. viscose fiber acid waste water processing unit as claimed in claim 3, it is characterised in that:The floor height of quartz sand layer is 800mm, the floor height of anthracite coal measure is 400mm.
  5. 5. viscose fiber acid waste water processing unit as claimed in claim 1 or 2, it is characterised in that:Milipore filter is that aperture is 50-200nm ceramic membrane.
  6. 6. viscose fiber acid waste water processing unit as claimed in claim 1 or 2, it is characterised in that:Also include intermediate pool And middle water pump, the outlet of milipore filter and the inlet communication of intermediate pool;The outlet of intermediate pool and the import of middle water pump connect It is logical;The outlet of middle water pump and the inlet communication of NF membrane.
  7. 7. viscose fiber acid waste water processing unit as claimed in claim 6, it is characterised in that:RO reverse osmosis membranes also with centre Pond connects.
  8. 8. viscose fiber acid waste water processing unit as claimed in claim 2, it is characterised in that:Set on the water inlet of sedimentation basin There is the screen pack of 150-200 mesh.
  9. 9. viscose fiber acid waste water processing unit as claimed in claim 1 or 2, it is characterised in that:The NF membrane is resistance to Sour NF membrane.
CN201720422886.8U 2017-04-21 2017-04-21 A kind of viscose fiber acid waste water processing unit Active CN206666261U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439634A (en) * 2018-03-21 2018-08-24 新乡化纤股份有限公司 A method of using twin-stage special membrane recycling viscose rayon acid waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439634A (en) * 2018-03-21 2018-08-24 新乡化纤股份有限公司 A method of using twin-stage special membrane recycling viscose rayon acid waste water

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