CN105439390B - A kind of lignin waste water recycling process - Google Patents
A kind of lignin waste water recycling process Download PDFInfo
- Publication number
- CN105439390B CN105439390B CN201511022716.2A CN201511022716A CN105439390B CN 105439390 B CN105439390 B CN 105439390B CN 201511022716 A CN201511022716 A CN 201511022716A CN 105439390 B CN105439390 B CN 105439390B
- Authority
- CN
- China
- Prior art keywords
- water
- waste water
- film
- reverse osmosis
- workshop section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 49
- 229920005610 lignin Polymers 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004064 recycling Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 54
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 34
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000004062 sedimentation Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 230000001112 coagulating effect Effects 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000012528 membrane Substances 0.000 claims description 23
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 20
- 230000003647 oxidation Effects 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 claims description 15
- 239000002893 slag Substances 0.000 claims description 13
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 11
- 235000017550 sodium carbonate Nutrition 0.000 claims description 11
- 239000010865 sewage Substances 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 239000005416 organic matter Substances 0.000 claims description 8
- 230000020477 pH reduction Effects 0.000 claims description 8
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 7
- 239000003729 cation exchange resin Substances 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 238000010612 desalination reaction Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 239000010408 film Substances 0.000 claims description 2
- 239000012510 hollow fiber Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 239000006004 Quartz sand Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 206010067868 Skin mass Diseases 0.000 claims 1
- 238000005276 aerator Methods 0.000 claims 1
- 238000013019 agitation Methods 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims 1
- 239000003830 anthracite Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 239000002223 garnet Substances 0.000 claims 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 238000010992 reflux Methods 0.000 claims 1
- -1 salt Salt Chemical class 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 10
- 239000010893 paper waste Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 5
- 235000012489 doughnuts Nutrition 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000592342 Tracheophyta Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000000968 medical method and process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005373 pervaporation Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
- C02F2209/055—Hardness
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to a kind of lignin waste water recycling process, the technique includes pretreatment system, film processing system and vapo(u)rization system before light electrolysis system, biochemical system, film, light electrolysis system includes at least micro-electrolysis reaction and coagulating sedimentation, biochemical system includes at least anaerobic-aerobic composite bio-chemical, pretreatment system is to select the integrated of multiple techniques according to biochemical system effluent quality before film, and membranous system includes at least ultrafiltration and reverse osmosis.High-content lignin waste water improves biodegradability by light electrolysis system, the water outlet of light electrolysis system divides COD into biochemical system removing unit, pretreatment system enters film processing system after reducing hardness, COD, suspended matter again before film, film processing system production water carries out allotment reuse, and concentrated water enters vapo(u)rization system and is evaporated crystallization.Treatment for reuse high-content lignin waste water of the present invention, not only reduces its pollution to environment, also achieves the high efficiente callback of water resource.
Description
Technical field
The present invention relates to the processing of organic wastewater, and in particular to a kind of lignin waste water recycling process, the technology is not only
Reduce pollution of the high-content lignin waste water to environment, also achieve the recycling of water resource, production water meets enterprise's production allotment.
Background technology
Lignin is primarily present in xylophyta and herbaceous plant, is also present in all vascular plants, lignin
With cellulose and hemicellulose be constitute plant skeleton main ingredient be only second to cellulose in the quantity of nature
Natural organic matter.Into the lignin of environment, there are two types of types：When lignin, negligible amounts that wood hydrolysis industry generates,
Overseas utilization is preferable；Second is that the lignin that paper industry generates, is primarily present in paper waste.Main dirt in paper waste
It is lignin to contaminate object, its bio-refractory, and waste water quantity accounts for the 30% of national amount of industrial wastewater, seriously polluted earth's surface
Water and underground water cause domestic water for dwellers around it difficult, and the general level of the health declines, and extremely pays close attention in the world.
Recently there is the method processing black liquid of condensed combustion, it is more and more undesirable in today of haze getting worse,
The research of extraction and integrated application about the lignin in paper waste is also more and more, but in actual production, and papermaking is useless
Still having after lignin is extracted in water and largely remains in paper waste, remaining lignin causes chromaticity of paper-making waste water high,
It is difficult to degrade, it is difficult biochemical, cause these waste water to always exist the feature that intractability is big, reuse is difficult and cost recovery is high.
The high production wastewater treatment process of lignin organic matter content mainly has absorption method, condensed combustion method, chemistry at present
The methods of medical method, ultra-violet oxidation method, bioanalysis, light electrolysis, embrane method.These treatment process are used merely, it is still residual in water outlet
There are lignin organic matters, and reuse standard is not achieved, and discharge still can cause environmental pollution to a certain extent.As sewage is arranged
The raising year by year of standard is put, the shortage of water resource, reusing sewage will be as universal trend.Therefore lignin organic matter is developed
The high production waste water recycling process of content is extremely urgent.
The technologies such as membrane process, evaporation technology are present comparative maturity reuse technologies, therefore these technologies need to be applied in wood
In the reuse of the high paper waste of lignin content and organically combines traditional water treatment technology and develop a kind of combined process, it can
Stablize the reuse for realizing the high paper waste of content of lignin, and energy minimization investment and operating cost.
Invention content
It is proposed the purpose of the present invention is to solve the problem of the high wastewater treatment and renovation hardly possible of lignin organic matter content
A kind of efficient reuse technology.It wooden is known as in conjunction with the reuse technology treatment for reuse of traditional treatment technology and present comparative maturity
The high waste water of machine object content also saves water resource while reducing influence of the waste water to environment.The waste water that the present invention is handled is
The high waste water of lignin organic matter content can reach the mesh that factory's recycle water standard is back to production after the process
's.
The present invention takes the technical solution to be：A kind of lignin waste water recycling process, including light electrolysis system, biochemical system,
Pretreatment system, film processing system, vapo(u)rization system, are as follows before film：
1) light electrolysis system：Waste water enters homogeneous Jun Liang workshop sections and enters the progress open loop of micro-electrolysis reaction workshop section after mixing
Chain-breaking reaction, the waste water after micro-electrolysis reaction, which enters, neutralizes coagulating sedimentation workshop section, micro-electrolysis reaction and neutralizes coagulating sedimentation and generates
Precipitation carry out Slag treatment, Slag treatment recycling water flow back into homogeneous Jun Liang workshop sections；
2) biochemical system：Light electrolysis system treated waste water enters acidification hydrolization workshop section, reduces organic matter molecular mass, production
The product of raw incomplete oxidation, water outlet enter composite bio-chemical workshop section, remove part COD (being abbreviated as COD), composite bio-chemical
The water outlet of workshop section enters secondary settling tank and precipitates again, ensures that effluent quality, a sludge part for precipitation are back to acidification hydrolization workshop section
With composite bio-chemical workshop section, the aging sludge and excess sludge of each workshop section carry out Slag treatment, and the water of Slag treatment recycling flows back into acidification
Hydrolyze workshop section；
3) pretreatment system before film：The water outlet of biochemical system still has certain COD, hardness, suspended matter (being abbreviated as SS),
For pretreatment system to meet the inflow requirement of film processing system, the water outlet of biochemical system enters pretreatment system before film before needing film
Afterwards, successively through peroxidating softening workshop section, air supporting workshop section and pretreatment workshop section, wherein COD (COD) with Fenton oxidation or
Person's ozone oxidation means remove, hardness with the softening means of NaOH and soda ash remove, suspended matter (SS) air supporting, filtering cloth filtering pool or
Multi-medium filtering pre-filtering means remove；The precipitation and dross of generation carry out Slag treatment, and the water of Slag treatment recycling returns to oxidation work
Section or softening workshop section；
4) film processing system：The water outlet of pretreatment system enters ultrafiltration before film and reverse osmosis workshop section carries out desalination desalination,
The hardness of middle reverse osmosis concentrated water is removed through NaOH and the softening of soda ash or cation exchange resin, and film processing system production water is adjusted
With reuse, the ejected wash water of film processing system is back to pretreatment system before film；
5) vapo(u)rization system：The concentrated water of film processing system, which enters vapo(u)rization system and is evaporated, crystallizes into salt, the production of vapo(u)rization system
Water enters reuse after mixing system.
Light electrolysis system in step 1) includes homogeneous Jun Liang workshop sections, micro-electrolysis reaction workshop section, neutralizes coagulating sedimentation workshop section.
Wherein micro-electrolysis reaction workshop section includes conversion zone, pH is adjusted and aeration section.It includes pH adjustings, coagulation section to neutralize coagulating sedimentation workshop section
And precipitating phase.Light electrolysis system can be the sewage of the high-content lignin of unsuitable biochemical or more difficult biochemistry biodegradability
(biodegradability be less than 0.3) is processed into the sewage that biodegradability is biochemical or preferable biochemistry, and the removal rate of COD for 40%~
80%.
Biochemical system in step 2) includes acidification hydrolization workshop section, composite bio-chemical workshop section, secondary settling tank.Wherein acidification hydrolization can
Organic macromolecule in sewage is degraded into small molecule, the removal rate of COD is 5%~30%.Composite bio-chemical can be with efficient degradation
Organic matter in sewage.The COD removal rates of biochemical process are 60~99%.
Pretreatment system includes oxidation, softening, air supporting, pre-filtering workshop section before film in step 3).Wherein oxidation is using fragrant
Oxidation or ozone oxidation, to remove part COD.Softening adds NaOH and soda ash, pH adjustings to 10~12, the removal rate of hardness
It is 75%~95%, moreover it is possible to while removing part COD, coloration.The pre-filterings such as air supporting and filtering cloth filtering pool or multi-medium filtering remove
Remaining SS.Pretreatment can guarantee the stable operation of back dual membrane system before film.
Film processing system in step 4) includes ultrafiltration, reverse osmosis.Wherein ultrafiltration membrane is organic film or ceramic membrane；Membrane component
For tubular type, hollow fiber form or rolling, ultrafiltration is to ensure follow-up reverse osmosis influent quality；Reverse osmosis membrane materials are polyamides
Amine, cellulose acetate or the composite membrane being made of the two；It is reverse osmosis to use 2~5 sections of coiled reverse osmosis membrane elements and 1~2 section of dish
Tubular type reverse-osmosis membrane element.Reverse osmosis progress desalination desalination, salt rejection rate is not less than 99%, to ensure producing water water quality；Using multistage
The reverse osmosis mode of rolling improves the rate of recovery of water, and the rate of recovery can reach 70%~95%；Disc tube reverse osmosis (dt-ro) is to reverse osmosis
The solid content of concentrated water, can be concentrated to 14% or more by the further concentration of saturating concentrated water, and to save vapo(u)rization system cost, production water is available
In allotment reuse.Water after multiple concentration, hardness also can corresponding multiple increase, need to judge its bright lattice Lear coefficient (abbreviation
For LSI) whether it is less than 3, it such as larger than or equal to 3 needs to be softened with NaOH and soda ash dosing softening or cation exchange resin,
To meet follow-up reverse osmosis inflow requirement.
The evaporator used in vapo(u)rization system in step 5) is multi-effect evaporator either MVR evaporators, the salt slurry of evaporation
Become solid salt after processing, can be used for industrial salt.
The present invention can also require some processes in appropriate adjustment combined process according to water water quality situation, water supply quality.
When water water hardness is not high, when meeting the hardness requirement of dual membrane system, the softening system in pretreating process before striping can be saved
System；When bio-chemical effluent COD is not high, the oxidation technology of pretreatment system before striping can be saved；When water supply quality is more demanding, example
Such as boiler feed water, negative and positive bed and mixed bed can be increased after producing water, further increase water quality, to protect boiler plant safety and stability to transport
Row.
Advantageous effect：
This technique is the organic of light electrolysis system, biochemical system, pretreatment system before film, film processing system and vapo(u)rization system
In conjunction with.Light electrolysis system can be biodegradability the high-content lignin of unsuitable biochemical or more difficult biochemistry sewage disposal at
Biodegradability is the sewage of biochemical or preferable biochemistry, hence into the removal COD of the sewage energy stability and high efficiency of biochemical system.Film
Preceding pretreatment system is to select the integrated of multiple techniques according to biochemical system effluent quality, reduces hardness, COD, SS again, ensures
The influent quality of membranous system reduces film fouling and dirty stifled risk.The ultrafiltration of the membranous system suspended matter in trap water, thin again
The macromolecular substances such as bacterium, virus ensure reverse osmosis influent quality, and to ensure reverse osmosis operation stability, it is clear to extend it
Wash the period；The rate of recovery of water is improved in such a way that multistage rolling is reverse osmosis, the rate of recovery can reach 70%~95%；Dish tubular type
Reverse osmosis is the further concentration to reverse osmosis concentrated water, the solid content of concentrated water can be concentrated to 14% or more, realizes water and dense salt
While efficiently separating of water saves vapo(u)rization system cost；LSI needed more than or equal to 3 with NaOH and soda ash dosing softening or
The mode of person's cation exchange resin softening effectively prevent film fouling, ensures follow-up reverse osmosis stable operation.
For the present invention for 99.8% or more lignin removing rate in high-content lignin waste water, the waste of generation is solid
Waste, and it is less；Automation technolo realization degree is high, can adjust the variation for adapting to water quantity and quality；It can after debugging optimizes
Stable operation；The reclamation rate of water is higher, is more than 99%；Treatment for reuse high-content lignin waste water of the present invention, not only reduces it
Pollution to environment also achieves the high efficiente callback of water resource.
Description of the drawings
Fig. 1 high-content lignin waste water high-efficiency recovering process flow figures.
Specific implementation mode
According to following embodiments, the present invention may be better understood.However, as it will be easily appreciated by one skilled in the art that real
It applies content described in example and is merely to illustrate the present invention, without sheet described in detail in claims should will not be limited
Invention.
Embodiment 1
Certain waste water of paper mill needs reuse to make process water, process flow chart such as Fig. 1.The water of waste water is 2000t/d, water quality
For BOD53254mg/L, CODCr 13017mg/L, TDS 2337mg/L, lignin substance 783mg/L.By light electrolysis
Effluent quality after system is BOD53817mg/L, CODCr 8237mg/L, TDS 2569mg/L.The B/C ratios of waste water by
0.25 is increased to 0.47, i.e., it is good by more difficult biochemical treatment to be converted to biodegradability for wastewater biochemical, is conducive to subsequent biochemical system
Efficient removal to COD.Effluent quality of the light electrolysis system water outlet after biochemical system is CODCr290mg/L, and TDS is
2483mg/L, hardness 635mg/L, SS 188mg/L, biochemical system reach 96% to the removal rate of COD.Because of biochemical system
It is discharged COD, hardness, SS higher, pretreatment system is set as Fenton oxidation, NaOH and soda ash softening, air supporting, medium filter before film
Pond, the effluent quality after pretreatment system before film are CODCr52mg/L, TDS 2560mg/L, hardness 87mg/L, SS
For 25mg/L.The production water of pretreatment system enters film processing system before film, and film processing system is one section of ultrafiltration, one section of rolling reverse osmosis
Thoroughly, two sections of rollings are reverse osmosis, cation exchange resin, two sections of ultrafiltration, three sections of rollings are reverse osmosis, four sections of rollings are reverse osmosis, three sections
Ultrafiltration, five sections of rollings are reverse osmosis, disc tube reverse osmosis (dt-ro), wherein one section, two sections ultrafiltration membrane is doughnut organic film, three sections
The tubular ceramic membrane of ultrafiltration, the reverse osmosis concentrated water hardness of two sections of rollings have reached 1143mg/L, need to use cation exchange tree
Fat softens, and disc tube reverse osmosis (dt-ro) be divided to two sections, and production water carries out allotment reuse, and concentrated water solid content is 18.2%, hardness 535mg/L,
Into vapo(u)rization system, the production salt amount after vapo(u)rization system is 5.12t/d.The total reuse water of system is 1988.7t/d, recycle-water
Matter is TDS272mg/L, CODCr ＜ 5mg/L, meets process water water quality, and water comprehensive recovery is 99.65%.
Embodiment 2
Recirculated cooling water, process flow chart such as Fig. 1 are in paper waste reuse.The water of waste water is 240t/d, and water quality is
BOD5735.6mg/L, CODCr 4327mg/L, TDS 1275mg/L, lignin substance 180mg/L.By light electrolysis system
Effluent quality after system is BOD5971mg/L, CODCr 2942mg/L, TDS 1338mg/L.The B/C ratios of waste water are carried by 0.17
Height to 0.33, i.e., wastewater biochemical by should not biochemical treatment be converted to biochemical processing.Department of biochemistry is passed through in the water outlet of light electrolysis system
Effluent quality after system is CODCr86mg/L, TDS 1174mg/L, hardness 301mg/L, SS 175mg/L.Because of department of biochemistry
The water outlet SS higher of system, then pretreatment system is set as air supporting, filtering cloth filtering pool before film, the water outlet after pretreatment system before film
Water quality is CODCr57mg/L, TDS 1125mg/L, hardness 300mg/L, SS 15mg/L.The production water of pretreatment system before film
Into film processing system, film processing system is reverse osmosis one section of ultrafiltration, one section of rolling, softening, two sections of ultrafiltration, two sections of rolling reverse osmosis
Thoroughly, disc tube reverse osmosis (dt-ro), wherein one section, two sections ultrafiltration membrane is doughnut organic film, the reverse osmosis concentrated water of one section of rolling
Hardness has reached 750mg/L, needs to soften, and is softened by the way of NaOH and soda ash dispensing softening, the water after softening is through two
Section ultrafiltration, the reverse osmosis disc tube reverse osmosis (dt-ro) that enters of two sections of rollings are concentrated again, and disc tube reverse osmosis (dt-ro) is one section, and dish tubular type is anti-
It is 14.1% to permeate concentrated water solid content, and into vapo(u)rization system, the production salt amount after vapo(u)rization system is 270kg/d.System is always returned
Water consumption is 239t/d, and reuse water quality is TDS354mg/L, and CODCr ＜ 3mg/L meet circulating cooling water quality, and water integrates back
Yield is 99.6%.
Embodiment 3
Recirculated cooling water, process flow chart such as Fig. 1 are in pulp-making waste-water reuse.The water of waste water is 800t/d, and water quality is
BOD52102mg/L, CODCr 8083mg/L, TDS 4589mg/L, lignin substance 672mg/L.By light electrolysis system
Effluent quality afterwards is BOD52036mg/L, CODCr 5358mg/L, TDS 4634mg/L.The B/C ratios of waste water are carried by 0.26
Height is converted to biochemical processing to 0.38, i.e. wastewater biochemical by more difficult biochemical treatment.Department of biochemistry is passed through in the water outlet of light electrolysis system
Effluent quality after system is CODCr157mg/L, TDS 4418mg/L, hardness 774mg/L, SS 235mg/L.Because of department of biochemistry
System goes out the water hardness, SS higher, then pretreatment system is set as softening, air supporting, medium filter tank before film, is by being pre-processed before film
Effluent quality after system is CODCr68mg/L, TDS 4523mg/L, hardness 63mg/L, SS 20mg/L.It is pre-processed before film
The production water of system enters film processing system, and film processing system is reverse osmosis one section of ultrafiltration, one section of rolling, two sections of ultrafiltration, two sections of volumes
Formula is reverse osmosis, cation exchange resin, three sections of ultrafiltration, three sections of rollings are reverse osmosis, disc tube reverse osmosis (dt-ro), wherein one section, two sections it is super
Filter membrane uses doughnut organic film, the tubular ceramic membrane of three sections of ultrafiltration, the reverse osmosis concentrated water hardness of two sections of rollings to reach
It to 630mg/L, needs to soften, the water after softening is concentrated again into two sections of disc tube reverse osmosis (dt-ro)s, and concentrated water solid content is
16.15%, into vapo(u)rization system, the production salt amount after vapo(u)rization system is 3.618t/d.The total reuse water of system is 791t/d,
Reuse water quality is TDS456mg/L, CODCr ＜ 5mg/L, meets circulating cooling water quality, and water comprehensive recovery is 98.9%.
Embodiment 4
Process water, process flow chart such as Fig. 1 are made in paper waste reuse.The water of waste water is 960t/d, and water quality is
BOD5509mg/L, CODCr 2313mg/L, TDS 869mg/L, lignin substance 217mg/L.After light electrolysis system
Effluent quality be BOD5587mg/L, CODCr 1503mg/L, TDS 954mg/L.The B/C ratios of waste water are increased to by 0.22
0.39, i.e. wastewater biochemical is converted to biochemical processing by more difficult biochemical treatment.Light electrolysis system is discharged after biochemical system
Effluent quality be CODCr49mg/L, TDS 908mg/L, hardness 325mg/L, SS 55mg/L.Because of going out for biochemical system
Water SS higher, then pretreatment system is set as medium filter tank before film, and the effluent quality after pretreatment system before film is
CODCr40mg/L, TDS 911mg/L, hardness 347mg/L, SS 15mg/L.The production water of pretreatment system enters film before film
Processing system, film processing system be reverse osmosis one section of ultrafiltration, one section of rolling, softening, two sections of ultrafiltration, two sections of rollings it is reverse osmosis, one
Section disc tube reverse osmosis (dt-ro), wherein one section, two sections of ultrafiltration membranes use doughnut organic film, the reverse osmosis concentrated water hardness of two sections of rollings
1735mg/L is had reached, needs to soften, softening is softened using NaOH and soda ash, and the water after softening is through two sections of ultrafiltration, two sections of volumes
Formula is reverse osmosis to be concentrated again into disc tube reverse osmosis (dt-ro), and concentrated water solid content is 15.2%, into vapo(u)rization system, through pervaporation
Production salt amount after system is 875kg/d.The total reuse water of system is 956t/d, and reuse water quality is TDS121mg/L, CODCr ＜
3mg/L, meets circulating cooling water quality, and water comprehensive recovery is 99.6%.
Claims (7)
1. a kind of lignin waste water recycling process, including pretreatment system, film process system before light electrolysis system, biochemical system, film
System, vapo(u)rization system, which is characterized in that be as follows:
(1) light electrolysis system：It is disconnected into the progress open loop of micro-electrolysis reaction workshop section after mixing that waste water enters homogeneous Jun Liang workshop sections
Chain reaction, the waste water after micro-electrolysis reaction, which enters, neutralizes coagulating sedimentation workshop section, micro-electrolysis reaction and neutralizes what coagulating sedimentation generated
Precipitation carries out Slag treatment, and the water of Slag treatment recycling flows back into homogeneous Jun Liang workshop sections；
(2) biochemical system：Light electrolysis system treated waste water enters acidification hydrolization workshop section, water outlet enter composite bio-chemical workshop section,
The water outlet of composite bio-chemical workshop section enters secondary settling tank and precipitates again, and the sludge part of precipitation is back to acidification hydrolization workshop section and compound
Biochemical workshop section, the aging sludge and excess sludge of each workshop section carry out Slag treatment, and the water of Slag treatment recycling flows back into acidification hydrolization work
Section；
(3) pretreatment system before film：COD in the water outlet of biochemical system（COD）With Fenton oxidation or ozone oxygen
Change means remove, and hardness is removed with the softening means of NaOH and soda ash, suspended matter（SS）With air supporting, filtering cloth filtering pool or multimedium mistake
Pre-filtering means are filtered to remove；The precipitation and dross of generation carry out Slag treatment, and the water of Slag treatment recycling returns to oxidation section or softening
Workshop section；
(4) film processing system：The water outlet of pretreatment system enters ultrafiltration before film and reverse osmosis workshop section carries out desalination desalination, wherein
The hardness of reverse osmosis concentrated water is removed through NaOH and the softening of soda ash or cation exchange resin, and film processing system production water is allocated
The ejected wash water of reuse, film processing system is back to pretreatment system before film；
(5) vapo(u)rization system：Reverse osmosis concentrated water enters vapo(u)rization system and is evaporated, and vapo(u)rization system produces water and allocates reuse, and residue is through salt
Salt is obtained after mud processing.
2. lignin waste water recycling process according to claim 1, it is characterised in that the lignin waste water be containing
Lignin organic matter matter, biodegradability are less than 0.3 waste water.
3. lignin waste water recycling process according to claim 1, it is characterised in that step (1) homogeneous Jun Liang workshop sections
Sewage collecting pool be reverse-flow type, be thoroughly mixed formula, even distribution type, hybrid mode is that mechanical agitation mixes or waterpower mixing；Institute
The micro-electrolysis reactor filler of micro-electrolysis reaction workshop section is stated using iron carbon mixing interstitital texture or framework type micro-hole alloy structure；In
Rectangular sedimentation tank, vertical sedimentation basin or radical sedimentation basin are used with the sedimentation basin of coagulating sedimentation workshop section.
4. lignin waste water recycling process according to claim 1, it is characterised in that the composite bio-chemical system described in step (2)
The blender of system uses propeller stirrer, turbine agitator or paddle agitator；Aeration is using surface aeration equipment, air blast
Aerator or failure of underwater aeration equipment；Secondary settling tank uses rectangular sedimentation tank, vertical sedimentation basin or radical sedimentation basin；Sludge
Reflux uses center-transmission single-pipe suction dredger.
5. lignin waste water recycling process according to claim 1, it is characterised in that the Fenton oxidation described in step (3) is adopted
With chemical Fenton or electric Fenton；Ozone oxidation facility is made of ozone generator and air water contact arrangement, the gas of ozone generator
Source is air or oxygen, and the diffusion of air-water contact equipment ozone is mixed using microporous diffuser, bubble tower or injector or turbine
Device；The air floatation machine that air supporting uses is electrolytic air-floating machine, dissolved gas floatator or aeration air floatation machine；Slag treatment is flame filter press or spiral shell
Bar squeezer is handled；Filtering cloth filtering pool uses riser filtering cloth filtering pool or turntable filtering cloth filtering pool, and filter disc is using fiber filter cloth, polyester
Type filter cloth or stainless steel filtering net；Multi-medium filtering use filter tank structure or filter tank structure, filter medium be anthracite, quartz sand,
Garnet or fibrous nodules fine crushing.
6. lignin waste water recycling process according to claim 1, it is characterised in that the film process described in step (4) uses
Ultrafiltration membrane be organic film or ceramic membrane；Membrane component is tubular type, hollow fiber form or rolling；Reverse osmosis membrane materials be polyamide,
Cellulose acetate or the composite membrane being made of the two；It is reverse osmosis anti-using 2 ~ 5 sections of coiled reverse osmosis membrane elements and 1 ~ 2 section of dish tubular type
Permeable membrane device；Reverse osmosis every section of concentrated water judge its bright lattice Lear coefficient (LSI) whether be less than 3, such as larger than or equal to 3 with
NaOH and soda ash dosing softening or cation exchange resin softening.
7. lignin waste water recycling process according to claim 1, it is characterised in that the vapo(u)rization system described in step (5) is adopted
With multi-effect evaporator or MVR evaporators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022716.2A CN105439390B (en) | 2015-12-30 | 2015-12-30 | A kind of lignin waste water recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022716.2A CN105439390B (en) | 2015-12-30 | 2015-12-30 | A kind of lignin waste water recycling process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105439390A CN105439390A (en) | 2016-03-30 |
| CN105439390B true CN105439390B (en) | 2018-08-14 |
Family
ID=55550103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511022716.2A Active CN105439390B (en) | 2015-12-30 | 2015-12-30 | A kind of lignin waste water recycling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105439390B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884151B (en) * | 2016-06-29 | 2019-05-07 | 盐城工学院 | Method for treating industrial wastewater by combined process |
| CN107814449A (en) * | 2016-09-13 | 2018-03-20 | 神华集团有限责任公司 | A kind of processing method of brine waste |
| CN106746131A (en) * | 2017-01-23 | 2017-05-31 | 上海中耀环保实业有限公司 | A kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process and system |
| CN107032561A (en) * | 2017-05-10 | 2017-08-11 | 中海油能源发展股份有限公司北京安全环保工程技术研究院 | A kind of coal chemical industry wastewater zero emission treatment method and system |
| CN107176708B (en) * | 2017-07-07 | 2021-01-26 | 蓝涛环保科技（南京）有限公司 | Method for separating cellulose ether residues from cellulose ether production wastewater |
| CN107522329B (en) * | 2017-08-18 | 2020-12-08 | 阜阳颍知网络信息科技有限公司 | Sewage treatment method in fishing net manufacturing |
| CN107857438B (en) * | 2017-12-02 | 2023-12-12 | 浙江碧源环保科技有限公司 | Zero-emission process for wastewater treatment of chemical enterprises and parks |
| CN110204918A (en) * | 2019-07-01 | 2019-09-06 | 福建炭都科技有限公司 | A kind of Environmental-protection bamboo carbon slab and its preparation process, environmental bamboo charcoal composite plate |
| CN115477438B (en) * | 2021-05-31 | 2024-02-13 | 中国石油化工股份有限公司 | A polymer-containing oilfield wastewater treatment method and treatment device |
| CN113845271B (en) * | 2021-09-28 | 2022-12-06 | 东北农业大学 | Resource water purifying device for treating rural domestic sewage and application method thereof |
-
2015
- 2015-12-30 CN CN201511022716.2A patent/CN105439390B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105439390A (en) | 2016-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105439390B (en) | A kind of lignin waste water recycling process | |
| CN100500597C (en) | Process method for the treatment and recycling of alginate production wastewater and zero discharge | |
| CN103011524B (en) | Recycling and processing method for printing and dyeing wastewater | |
| CN102452760A (en) | Treatment method for recycling oilfield produced water | |
| CN100532299C (en) | Landfill Leachate Treatment Process and System Based on Membrane Bioreactor-Nanofiltration Membrane Technology | |
| CN112174412A (en) | Method for recycling reclaimed water in high-salt-content wastewater | |
| CN103626359A (en) | Combined treatment process for cotton pulping black liquid and saponin wastewater | |
| CN102659291A (en) | Nano-filtration and reverse osmosis concentrated solution reduction treatment system and method | |
| CN201280490Y (en) | Reclaimed water recycling apparatus by full membrane process | |
| CN103663849A (en) | Method for treating papermaking wastewater based on combined process including integrated membrane technology and advanced oxidation technology | |
| CN105645662A (en) | Device and method for removing refractory organic matters in membrane filtration concentrated solution | |
| CN104370426A (en) | Method and device for treatment of high-temperature printing and dyeing wastewater | |
| CN107522340A (en) | A kind of system and method for recycling high villaumite sewage | |
| CN101229936B (en) | Method and equipment for reclaiming refining and chemical wastewater | |
| CN110642382A (en) | Anaerobic and aerobic composite biological treatment desalting method | |
| CN107265794A (en) | A kind of processing of gasification of poor coal waste water at recycle device and its recovery with using method | |
| CN104355451B (en) | The technique of percolate bio-chemical effluent recycling | |
| CN117049755B (en) | Reclaimed water recycling treatment process for coal gas wastewater | |
| CN112028273B (en) | A high-recovery rate water reuse deep treatment system and treatment method | |
| CN109110967B (en) | Bauxite beneficiation wastewater recycling system and method based on membrane chemical reactor | |
| CN100509661C (en) | Treating technique of polyether polyatomic alcohol producing sewage recovering and utilization | |
| CN207227223U (en) | A kind of processing of gasification of poor coal waste water and recycle device | |
| CN206915894U (en) | High zero release equipment who contains salt waste water treatment | |
| CN211004887U (en) | Waste incineration power plant waste water processing system | |
| CN109231606A (en) | Cotton Pulp Wastewater advanced treatment and reclamation devices and methods therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |