CN109205904A - The producing wastewater treatment of sodium cellulose glycolate - Google Patents
The producing wastewater treatment of sodium cellulose glycolate Download PDFInfo
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- CN109205904A CN109205904A CN201811186300.8A CN201811186300A CN109205904A CN 109205904 A CN109205904 A CN 109205904A CN 201811186300 A CN201811186300 A CN 201811186300A CN 109205904 A CN109205904 A CN 109205904A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/08—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The producing wastewater treatment of sodium cellulose glycolate, including following processing step: step 1: filtering removes suspended matter, ss, and hemicellulose obtains waste water and clear liquid；Step 2: waste water and clear liquid is neutralized, the sodium chloroacetate in waste water and clear liquid is made to be transformed into hydroxy acid sodium and sodium chloride；Step 3: multiple-effect evaporation separates solid-phase chlorination sodium and concentration liquid phase；Step 4: hydroxy acid sodium and sodium cellulose glycolate in separation concentrated solution phase;The hydroxy acid sodium of precipitation is packaged into hydroxy acid sodium product after centrifugal drying crushes；The sodium cellulose glycolate of precipitation is packaged into sodium cellulose glycolate product after washing, purification, drying, crushing or directly obtains high concentration hydroxyacetic acid sodium solution；Using the production waste water of this processing method processing sodium cellulose glycolate, low energy consumption, and easy to operate, working condition is mild, it is easy to accomplish serialization, automation and industrialization large scale processing, it is energy saving, and turn waste into wealth.
Description
Technical field
The present invention relates to the field of wastewater treatment more particularly to the producing wastewater treatments of sodium cellulose glycolate.
Background technique
Sodium cellulose glycolate (CMC) is worldwide production amount and the maximum cellulosic products of application amount now, is answered extensively
For food, daily chemical industry, health care industry, building materials industry, petroleum industry；CMC wastewater treatment becomes current enterprise's production cost
Increase, restrict the principal element of enterprise development；The wastewater treatment method of the prior art is all made of at physics+biochemistry both at home and abroad at present
Logos；First waste water is filtered, since high concentration sodium chloride is to the biochemical bacteria effect of drawing up；It is dense that the prior art is all made of evaporation
Division reduces sodium chloride and draws up to biochemical bacteria from sodium chloride, by the substance hydroxy acid sodium, monoxone, CMC, few in waste water
The atent solvent of amount is diluted to certain value；To meet the 1200mg/l of biochemical system requirement, then send to biochemical system and decompose, it is up to standard
Discharge；And the huge height of biochemical system cost of investment, occupancy construction area are huge, considerably increase the cost of wastewater treatment；Therefore it sets
It is particularly necessary to count a kind of lower-cost wastewater treatment method.
Summary of the invention
Easy to operate it is an object of the present invention to provide the producing wastewater treatment of sodium cellulose glycolate, energy consumption is small, cost
It is low, can continuous processing and automatic operating, solve the above technical problem.
In order to achieve the above technical purposes, reach above-mentioned technical requirements, the technical scheme adopted by the invention is that: hydroxyl first
The producing wastewater treatment of base sodium cellulosate mainly includes sodium chloroacetate, entrainment in the production waste water of sodium cellulose glycolate
The waste liquid of sodium cellulose glycolate, water, a small amount of solvent and suspended matter, hemicellulose；It is characterized by: the production waste water include with
Lower processing step: step 1: the waste water produced in wastewater collection pond is passed through filter, removes suspended matter, ss, half fiber by filtering
Dimension element, obtains waste water and clear liquid；Step 2: neutralizing waste water and clear liquid, and hydrochloric acid or sodium hydroxide solution stirring are added in waste water and clear liquid,
PH value is tested, makes the pH value 7-11 of waste water and clear liquid, the sodium chloroacetate in waste water and clear liquid is transformed into hydroxy acid sodium and sodium chloride；
Step 3: multiple-effect evaporation separates solid-phase chlorination sodium and concentration liquid phase, and waste water and clear liquid obtained in step 2 is carried out multiple-effect evaporation,
Precipitated sodium chloride；Then isolated solid-phase chlorination sodium is carried out by cyclone and concentration liquid phase, the sodium chloride of precipitation enters salt
Stock tank is dehydrated using centrifuge and elutes, sodium chloride product is packaged into after drying；Concentration liquid phase enters high temperature mother liquor tank,
A small amount of sodium chloride of precipitating is filtered out by filter；Step 4: hydroxy acid sodium and methylol in separation concentrated solution phase
Sodium cellulosate;Filtered concentrate is mutually passed through multi-functional quick regulating allocation reactor tank, it is molten that inertia is added into reactor tank
The ratio of agent, concentrate and atent solvent is 1:2.8, and the hydroxy acid sodium of precipitation is packaged into hydroxyl after centrifugal drying crushes
Sodium acetate product；It then proceedes to that atent solvent is added, so that total ratio of concentrate and atent solvent is 1:3, the hydroxyl first of precipitation
Base sodium cellulosate is packaged into sodium cellulose glycolate product after washing, purification, drying, crushing or directly obtains high concentration hydroxyl
Guanidine-acetic acid sodium solution.
Preferred: the atent solvent is made of ethyl alcohol and propyl alcohol, and the accounting of propyl alcohol is 40%-60%.
Preferred: the ratio of ethyl alcohol and propyl alcohol changes and when water content reaches 45% in the atent solvent, send steaming
It evaporates workshop section and extracts atent solvent, the waste water that the solution and production workshop section after extracting atent solvent are sent enters production waste water together and receives
Ji Chi, the sodium chloride extracted in waste water that moves in circles, hydroxy acid sodium and sodium cellulose glycolate product.
Preferred: the multiple-effect evaporation uses triple effect evaporation or four-effect evaporation.
Beneficial effects of the present invention；The producing wastewater treatment of sodium cellulose glycolate is concentrated former using multiple-effect evaporation
Reason makes to produce the sodium chloride saturation in waste water and is precipitated, and multiple-effect evaporation improves the utilization rate of steam, and energy consumption is only common evaporation
30%；Sodium chloride is separated first using cyclone separation process, solid-phase chlorination sodium is packaged into life by centrifugation, dehydration, drying
Produce the sodium chloride product of food-grade；And utilize the organic matter in waste water water-soluble and the principle liquid phase insoluble in solvent is further
Separating-purifying is carried out, adds atent solvent to obtain hydroxy acid sodium product and carry the waste water of CMC product secretly, atent solvent recycles
It uses, reduces cost for wastewater treatment；Reaction product sodium chloride, side reaction product hydroxy acid sodium and entrainment CMC are extracted realizing
During the waste water of product, the moisture evaporative condenser in waste water is used as production supplement water, has been greatly reduced production cost, real
Production wastewater zero discharge is showed；Using the production waste water of this processing method processing sodium cellulose glycolate, low energy consumption, operation letter
Single, working condition is mild, it is easy to accomplish serialization, automation and industrialization large scale processing, it is energy saving, and turn waste into wealth.
Specific embodiment
In order to be more clear goal of the invention of the invention, technical solution and its advantageous effects, below in conjunction with specific
Embodiment, the present invention will be described in further detail；
The producing wastewater treatment of sodium cellulose glycolate mainly includes monoxone in the production waste water of sodium cellulose glycolate
Sodium, the waste liquid for carrying sodium cellulose glycolate secretly, water, a small amount of solvent and suspended matter, hemicellulose；It is characterized by: the production is useless
Water includes following processing step: step 1: filtering, and the waste water produced in wastewater collection pond is passed through filter, removes suspended matter,
Ss, hemicellulose obtain waste water and clear liquid；Step 2: neutralizing waste water and clear liquid, and hydrochloric acid is added in waste water and clear liquid or sodium hydroxide is molten
Liquid stirring, tests pH value, makes the pH value 7-11 of waste water and clear liquid, the sodium chloroacetate in waste water and clear liquid be transformed into hydroxy acid sodium and
Sodium chloride；Step 3: multiple-effect evaporation separates solid-phase chlorination sodium and concentration liquid phase, waste water and clear liquid obtained in step 2 is carried out more
Effect evaporation, precipitated sodium chloride；Then isolated solid-phase chlorination sodium and concentration liquid phase, the sodium chloride of precipitation are carried out by cyclone
Into salt stock tank, it is dehydrated and elutes using centrifuge, sodium chloride product is packaged into after drying；Concentration liquid phase enters high temperature mother
Flow container filters out a small amount of sodium chloride of precipitating by filter；Step 4: hydroxy acid sodium and hydroxyl in separation concentrated solution phase
Sodium carboxymethylcellulose pyce;Filtered concentrate is mutually passed through multi-functional quick regulating allocation reactor tank, is added into reactor tank lazy
Property solvent, the ratio of concentrate and atent solvent is 1:2.8, and the hydroxy acid sodium of precipitation is packaged into after centrifugal drying crushes
Hydroxy acid sodium product；It then proceedes to that atent solvent is added, so that concentrate and the total ratio of atent solvent are 1:3, precipitation
Sodium cellulose glycolate is packaged into sodium cellulose glycolate product after washing, purification, drying, crushing or directly obtains highly concentrated
Spend hydroxyacetic acid sodium solution.
The atent solvent is made of ethyl alcohol and propyl alcohol, and the accounting of propyl alcohol is 40%-60%；Second in the atent solvent
When the ratio of pure and mild propyl alcohol changes and water content reaches 45%, distillation workshop section is sent to extract atent solvent, after extracting atent solvent
Solution and the waste water sent of production workshop section enter production wastewater collection pond together, the sodium chloride extracted in waste water that moves in circles,
Hydroxy acid sodium and sodium cellulose glycolate product；The multiple-effect evaporation uses triple effect evaporation or four-effect evaporation.
Specific implementation of the invention: being passed through filter for the waste water produced in wastewater collection pond, to remove suspended matter, ss,
Hemicellulose obtains waste water and clear liquid；Hydrochloric acid or sodium hydroxide solution stirring are added in waste water and clear liquid, tests pH value, makes waste water
The pH value of clear liquid is 7-11, and the sodium chloroacetate in the waste water and clear liquid of neutralization is transformed into hydroxy acid sodium and sodium chloride；Due to waste water
PH value it is different, waste water in it is acid when, be gradually added sodium hydroxide thereto, be sufficiently stirred, test pH value, until pH value
In 7-11；When waste water is in alkalinity, it is gradually added hydrochloric acid thereto, is sufficiently stirred, test pH value, until pH value is in 7-11；Then
Waste water and clear liquid after neutralization is subjected to multiple-effect evaporation, precipitated sodium chloride；By cyclone carry out isolated solid-phase chlorination sodium and
Liquid phase is concentrated, the sodium chloride of precipitation enters salt stock tank, is dehydrated and elutes using centrifuge, and sodium chloride production is packaged into after drying
Product；The concentration liquid phase of waste water containing hydroxy acid sodium and with CMC product enters high temperature mother liquor tank, again passes by filter filtering
Fall a small amount of sodium chloride of precipitating；Filtered concentrate is mutually passed through multi-functional quick regulating allocation reactor tank, to reactor tank
The ratio of middle addition atent solvent, concentrate and atent solvent is 1:2.8, and hydroxy acid sodium is precipitated, crushes by centrifugal drying
After be packaged into hydroxy acid sodium product；It then proceedes to that atent solvent is added in the concentrate of the waste water with CMC product so that
The ratio of concentrate and atent solvent is 1:3, and sodium cellulose glycolate is precipitated, and sodium cellulose glycolate passes through washing, refines, is dry
Sodium cellulose glycolate product is packaged into after dry, crushing or directly obtains high concentration hydroxyacetic acid sodium solution.This kind produces waste water
Processing method reduces 70% energy consumption, realizes wastewater zero discharge, energy conservation and environmental protection.
Waste water composition:
| Title | Sodium chloride | Hydroxy acid sodium | CMC oligomer | SS | COD | Hemicellulose | Water |
| Content | 16% | 7% | 2% | 2000mg/L | 90000mg/L | 800mg/L | 75% |
The corresponding main matter of COD in CMC waste water are as follows: hydroxy acid sodium and CMC.Using the processing method, 100 tons of waste water are extracted
6.65 tons of hydroxy acid sodiums, 1.9 tons of CMC, yield 95%, 16 tons of sodium chloride, 0.39 ton of steam of consumption is right compared with the prior art
Waste water is concentrated by evaporation Isolating chlorinated about 0.85 ton of sodium waste steam in CMC wastewater treatment method, greatly reduces energy consumption, Er Qieshi
Now produce wastewater zero discharge；And hydroxy acid sodium product market price: 7.6 ten thousand yuan/ton ~ 120,000 yuan/ton, 40% hydroxyacetic acid
2.5 ten thousand yuan/ton of sodium solution, CMC price is generally 9.5 ~ 2.0 ten thousand yuan/ton, improves Business Economic Benefit.
Above-described embodiment is only intended to clearly illustrate description made by the present invention, and does not limit the embodiments,
To those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
Dynamic, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (4)
- It mainly include chloroethene in the production waste water of sodium cellulose glycolate 1. the producing wastewater treatment of sodium cellulose glycolate Sour sodium, the waste liquid for carrying sodium cellulose glycolate secretly, water, a small amount of solvent and suspended matter, hemicellulose；It is characterized by: the production Wastewater treatment is the following steps are included: step 1: filtering, and the waste water produced in wastewater collection pond is passed through filter, removes and suspends Object, ss, hemicellulose obtain waste water and clear liquid；Step 2: neutralizing waste water and clear liquid, and hydrochloric acid or hydroxide are added in waste water and clear liquid Sodium solution, stirring test pH value, make the pH value 7-11 of waste water and clear liquid, the sodium chloroacetate in waste water and clear liquid is transformed into hydroxyl second Sour sodium and sodium chloride；Step 3: multiple-effect evaporation separates solid-phase chlorination sodium and concentration liquid phase, by waste water and clear liquid obtained in step 2 Carry out multiple-effect evaporation, precipitated sodium chloride；Then isolated solid-phase chlorination sodium and concentration liquid phase are carried out by cyclone, precipitation Sodium chloride enters salt stock tank, is dehydrated and elutes using centrifuge, sodium chloride product is packaged into after drying；Liquid phase is concentrated to enter High temperature mother liquor tank filters out a small amount of sodium chloride of precipitating by filter；Step 4: the hydroxyacetic acid in separation concentrated solution phase Sodium and sodium cellulose glycolate;Filtered concentrate is mutually passed through multi-functional quick regulating allocation reactor tank, into reactor tank The ratio of addition atent solvent, concentrate and atent solvent is 1:2.8, and the hydroxy acid sodium of precipitation is after centrifugal drying crushes It is packaged into hydroxy acid sodium product；It then proceedes to that atent solvent is added, so that total ratio of concentrate and atent solvent is 1:3, The sodium cellulose glycolate of precipitation is packaged into sodium cellulose glycolate product after washing, purification, drying, crushing or directly obtains Obtain high concentration hydroxyacetic acid sodium solution.
- 2. the producing wastewater treatment of sodium cellulose glycolate according to claim 1, it is characterised in that: described is lazy Property solvent be made of ethyl alcohol and propyl alcohol, the accounting of propyl alcohol is 40%-60%.
- 3. the producing wastewater treatment of sodium cellulose glycolate according to claim 2, it is characterised in that: described is lazy Property solvent in the ratio of ethyl alcohol and propyl alcohol change and when water content reaches 45%, send distillation workshop section to extract atent solvent, extract The waste water that solution and production workshop section after atent solvent are sent enters production wastewater collection pond together, moves in circles and extracts in waste water Sodium chloride, hydroxy acid sodium and sodium cellulose glycolate product.
- 4. the producing wastewater treatment of sodium cellulose glycolate according to claim 1, it is characterised in that: described is more Effect evaporation uses triple effect evaporation or four-effect evaporation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104865A (en) * | 2019-12-12 | 2021-07-13 | 林齐坤 | Method for treating refined mother liquor of vat blue RSN |
| CN113912236A (en) * | 2021-10-29 | 2022-01-11 | 广州兰德环保资源科技有限公司 | Method for recovering glycolic acid from CMC wastewater |
| CN115072865A (en) * | 2022-06-28 | 2022-09-20 | 福建省恒创环保科技有限公司 | Biological denitrification composite carbon source for sewage treatment and application thereof |
| CN116082144A (en) * | 2022-12-30 | 2023-05-09 | 常州大学 | Recovery method for high-concentration sodium glycolate in CMC production wastewater |
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2018
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104865A (en) * | 2019-12-12 | 2021-07-13 | 林齐坤 | Method for treating refined mother liquor of vat blue RSN |
| CN113104865B (en) * | 2019-12-12 | 2023-08-22 | 酒泉宇鹏化工科技有限公司 | Treatment method of vat blue RSN refining mother liquor |
| CN113912236A (en) * | 2021-10-29 | 2022-01-11 | 广州兰德环保资源科技有限公司 | Method for recovering glycolic acid from CMC wastewater |
| CN115072865A (en) * | 2022-06-28 | 2022-09-20 | 福建省恒创环保科技有限公司 | Biological denitrification composite carbon source for sewage treatment and application thereof |
| CN116082144A (en) * | 2022-12-30 | 2023-05-09 | 常州大学 | Recovery method for high-concentration sodium glycolate in CMC production wastewater |
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Application publication date: 20190115 |