CN105417822A - Method for treating rubber vulcanization accelerator wastewater by combination of MVR (mechanical vapor recompression) evaporation and chemical treatment - Google Patents
Method for treating rubber vulcanization accelerator wastewater by combination of MVR (mechanical vapor recompression) evaporation and chemical treatment Download PDFInfo
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- CN105417822A CN105417822A CN201510964281.7A CN201510964281A CN105417822A CN 105417822 A CN105417822 A CN 105417822A CN 201510964281 A CN201510964281 A CN 201510964281A CN 105417822 A CN105417822 A CN 105417822A
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- mvr
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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
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
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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
Abstract
The invention provides a method for treating rubber vulcanization accelerator wastewater by combination of MVR (mechanical vapor recompression) evaporation and chemical treatment. The method comprises the steps of putting wastewater into a first effect evaporator of the MVR, heating steam until the evaporating temperature of a vapor phase is 80 to 100 DEG C, evaporating supplied material wastewater and enabling the salt concentration of same to reach 15 percent to 25 percent; adding the wastewater with 15 percent to 25 percent of salt concentration by evaporating into a stirring tank with a stirring function for performing acid adjustment and adjusting the pH to 1 to 5, performing filter pressing and recycling resin after mixing and sedimenting for 30 to 60 min; adding alkali into the wastewater after filter pressing and adjusting the pH to 6 to 8, then entering into a second effect evaporator of the MVR for concentration, and separating salt by a centrifugal machine; the combination of the most energy-efficient MVR evaporation technology and chemical treatment is adopted, industrial salt which can be exported can be obtained, COD (Chemical Oxygen Demand) of the wastewater is greatly reduced, the effluent standard can be met after post processing; the COD of condensation water by MVR evaporation is very low and the condensation water can be reused for production, the water consumption of production is lowered, and the production cost is saved.
Description
Technical field
The present invention relates to rubber ingredients class sewage treatment area, particularly relate to rubber accelerator class sewage water treatment method; The method that a kind of MVR of employing evaporation and chemical treatment combine process thiofide waste water is provided.
Technical background
Rubber ingredients waste water is typical high COD, high salt, difficult biochemical organic waste water, and traditional industries there is no good treatment process, can remove the COD in waste water, the salt in waste water can be reclaimed again.Adopt the method process such as Fenton oxidation, multiple-effect evaporation, biochemistry in traditional industries more, Fenton oxidation, multiple-effect evaporation running cost are very high, biochemical treatment is very high to waste water quality stability requirement, after the shut-down of the reasons such as workshop maintenance, power failure causes waste water draining change of water quality, impact is biochemical runs, cause biochemical mushroom dead, treatment effect reduces.Current china natural resources, energy consumption are sustainable growth trend, the environmental protection pressure faced is also increasing, i.e. easy technique and energy-conservation equipment is needed to reach the object of effective process waste water, salt in waste water can be turned waste into wealth simultaneously, reduce cost for wastewater treatment, be the problem needing at present to solve, this environmental protection to whole rubber ingredients especially rubber accelerator industry development has important meaning.MVR is the abbreviation of mechanical vapor recompression technology, it is a most energy-conservation at present concentration technique, being widely used in medicine in recent years, agricultural chemicals concentrated industry, separating out because having resinous matter in Waste water concentrating process, and caused MVR technology almost little in process waste water.This patent is intended to utilize MVR power-saving technology to be combined with the characteristic of rubber ingredients waste water, finds a kind of applicable technique the salt in waste water can be turned waste into wealth, can reduce cost for wastewater treatment again.
Summary of the invention
The present invention proposes a kind of MVR of employing and to evaporate and chemical treatment combines and processes the method for thiofide waste water, through research and experiment, adopt this simple treatment process, not only salt in waste water can be deviate from obtain qualified commercial grade salt, and it is low to evaporate by MVR the condensed water COD obtained, can reprocessing for the production of, reduce production energy consumption, save production cost.
The present invention is as follows by following technical proposals:
Adopt MVR evaporation and chemical treatment to combine and process a method for thiofide waste water, comprise the following steps:
(1) waste water being dropped into MVR 1st effective evaporator, is 80-100 DEG C by steam heating gas evaporation temperature, and evaporation supplied materials sewage makes its salt concentration reach 15% ~ 25%;
(2) carry out acid for adjusting pH=1 ~ 5 by being evaporated to the stirred pot that waste water that salt concentration reaches 15% ~ 25% adds with stirring, after mixing sedimentation 30 ~ 60min, resin is reclaimed in press filtration;
(3) sewage after press filtration add alkali regulate pH=6 ~ 8 enter MVR 2nd effect evaporator concentrated after go out salt through whizzer;
The invention has the advantages that: adopt the most energy-conservation MVR evaporation technique at present to combine with chemical treatment, reach while reducing COD of sewage and can concentrate out again acceptable industrial salt, MVR water outlet COD is also very low, the object of producing and recycling can be reached, the running cost of rubber accelerator wastewater treatment is reduced greatly.
Described acid can be the mineral acid such as hydrochloric acid, sulfuric acid; Alkali can be the mineral alkali such as sodium hydroxide, calcium hydroxide; The method not only can obtain Industrial Salt can export trade, greatly reduces COD of sewage, can reach emission standard after post-processed; And by MVR evaporate the condensed water COD obtained very low can be used further to produce, reduce produce water consumption, save production cost.For achieving the above object,
The present invention adopts the most energy-conservation MVR evaporation technique at present to combine with chemical treatment, reach while reducing COD of sewage and can concentrate out again acceptable industrial salt, the method not only can obtain Industrial Salt can export trade, greatly reduces COD of sewage, can reach emission standard after post-processed; And by MVR evaporate the condensed water COD obtained very low can be used further to produce, reduce produce water consumption, save production cost.
Accompanying drawing explanation
Accompanying drawing is schematic flow sheet of the present invention.
Embodiment
Below by specific embodiment, the present invention is described in further detail:
As shown in drawings: waste water is dropped into MVR 1st effective evaporator and evaporate, be evaporated to certain density waste water add with stir stirred pot carry out acid regulate and sedimentation after reclaim resin, the sewage after press filtration add alkali regulate after enter MVR 2nd effect evaporator concentrate after go out salt;
The steam that 1st effective evaporator and 2nd effect evaporator self produce utilizes through vapour compressor compression Posterior circle;
The condensed water of waste water after an effect two effect evaporation can be back to each workshop.
Following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment 1:
Former water is rubber vulcanization accelerant CZ waste water:
(1) former water evaporation: it is 15% that former water is heated to 80 DEG C of concentrating salt-containing concentration through 1st effective evaporator.
(2) organic matter removal: the hydrochloric acid adding 31% in close to saturation water regulates pH=1, mix and blend sedimentation 30min, collects solid resin through pressure filter.
(3) neutralize: add in the water of pH=1 after 32% liquid caustic soda regulates pH=6 and enter 2nd effect evaporator.
(4) water after treatment enters 2nd effect evaporator evaporative crystallization and goes out salt 1.1t.
The steam condenses COD that 1st effective evaporator, 2nd effect evaporator are collected is directly used in Workshop Production Water circulation at 500mg/L, obtains white sodium chloride salt, saltiness 98.5%.
Embodiment 2:
Former water is rubber vulcanization accelerator NS waste water:
(1) former water evaporation: it is 20% that former water is heated to 90 DEG C of concentrating salt-containing concentration through 1st effective evaporator.
(2) resin is separated out: in close to saturation water, add sulfuric acid control pH=3, mix and blend sedimentation 45min, collects solid resin through pressure filter.
(3) neutralize: add in the water of pH=3 after calcium hydroxide regulates pH=7 and enter 2nd effect evaporator.
(4) water after treatment enters 2nd effect evaporator evaporative crystallization and goes out salt 1.3t.
The steam condenses COD that 1st effective evaporator, 2nd effect evaporator are collected is directly used in Workshop Production Water circulation at 550mg/L, obtains white sodium chloride salt, saltiness 98.9%.
Embodiment 3:
Former water is rubber vulcanization accelerator DZ waste water:
(1) former water evaporation: it is 25% that former water is heated to 100 DEG C of concentrating salt-containing concentration through 1st effective evaporator.
(2) resin is separated out: add hydrochloric acid the controls pH=5 of 31% in close to saturation water, mix and blend sedimentation 60min, through pressure filter collection solid resin.
(3) neutralize: add in the water of pH=5 after 32% liquid caustic soda regulates pH=8 and enter 2nd effect evaporator.
(4) water after treatment enters 2nd effect evaporator, and evaporate 3 hours, obtain saturated solution, crystallization goes out salt 1.7t.
The steam condenses COD that 1st effective evaporator, 2nd effect evaporator are collected is directly used in Workshop Production Water circulation at 601mg/L, and obtain white crystals salt, saltiness is 98.1%.
Embodiment 4:
Former water is rubber vulcanization accelerator DZ, NS, CZ composite waste:
(1) former water evaporation: it is 25% that former water is heated to 80 DEG C of concentrating salt-containing concentration through 1st effective evaporator.
(2) resin is separated out: add the sulfuric acid 500kg of 25% in close to saturation water, controls pH=1, mix and blend sedimentation 30min, through pressure filter collection solid resin.
(3) neutralize: in the water of pH=1, add calcium hydroxide 120Kg, after regulating pH=8, enter 2nd effect evaporator.
(4) water after treatment enters 2nd effect evaporator, and evaporate 3 hours, obtain saturated solution, crystallization goes out salt 1.5t.
The steam condenses COD that 1st effective evaporator, 2nd effect evaporator are collected is directly used in Workshop Production Water circulation at 500mg/L, obtains white crystals salt, saltiness 98.1%.
Embodiment 5:
Former water is rubber vulcanization accelerant CZ, NS composite waste:
(1) former water evaporation: it is 20% that former water is heated to 90 DEG C of concentrating salt-containing concentration through 1st effective evaporator.
(2) resin is separated out: add the hydrochloric acid 500kg of 31% in close to saturation water, controls pH=5, mix and blend sedimentation 45min, through pressure filter collection solid resin.
(3) neutralize: in the water of pH=5, add 32% liquid caustic soda 120Kg, after regulating pH=7, enter 2nd effect evaporator.
(4) water after treatment enters 2nd effect evaporator, and evaporate 3 hours, obtain saturated solution, crystallization goes out salt 1.2t.
The steam condenses COD that 1st effective evaporator, 2nd effect evaporator are collected is directly used in Workshop Production Water circulation at 550mg/L, obtains white crystals salt, saltiness 98.9%.
Embodiment 6:
Former water is rubber vulcanization accelerant CZ, DZ composite waste:
(1) former water evaporation: it is 15% that former water is heated to 100 DEG C of concentrating salt-containing concentration through 1st effective evaporator.
(2) resin is separated out: add the hydrochloric acid 500kg of 31% in close to saturation water, controls pH=3, mix and blend sedimentation 60min, through pressure filter collection solid resin.
(3) neutralize: in the water of pH=3, add calcium hydroxide 120Kg, after regulating pH=6, enter 2nd effect evaporator.
(4) water after treatment enters 2nd effect evaporator, and evaporate 3 hours, obtain saturated solution, crystallization goes out salt 1.7t.
The steam condenses COD that 1st effective evaporator, 2nd effect evaporator are collected is directly used in Workshop Production Water circulation at 601mg/L, and obtain white salt, salt ash content is 99.1%.
Claims (1)
1. adopt MVR evaporation and chemical treatment to combine and process a method for thiofide waste water, it is characterized in that step is as follows:
(1) waste water being dropped into MVR 1st effective evaporator, is 80-100 DEG C by steam heating gas evaporation temperature, and evaporation supplied materials sewage makes its salt concentration reach 15% ~ 25%;
(2) carry out acid for adjusting pH=1 ~ 5 by being evaporated to the stirred pot that waste water that salt concentration reaches 15% ~ 25% adds with stirring, after mixing sedimentation 30 ~ 60min, resin is reclaimed in press filtration;
(3) sewage after press filtration add alkali regulate pH=6 ~ 8 enter MVR 2nd effect evaporator concentrated after go out salt through whizzer.
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| CN201510964281.7A CN105417822B (en) | 2015-12-17 | 2015-12-17 | The method for being combined processing thiofide waste water is evaporated and is chemically treated using MVR |
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| CN201510964281.7A CN105417822B (en) | 2015-12-17 | 2015-12-17 | The method for being combined processing thiofide waste water is evaporated and is chemically treated using MVR |
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| CN105417822B CN105417822B (en) | 2018-03-27 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587476A (en) * | 2016-12-21 | 2017-04-26 | 科迈化工股份有限公司 | Method for treatment of mixed wastewater produced during production of rubber accelerator NS\CZ\DZ |
| CN107619145A (en) * | 2017-11-06 | 2018-01-23 | 山东阳谷华泰化工股份有限公司 | A kind of processing method of anti-recovery agent production waste water |
| CN108911415A (en) * | 2018-08-08 | 2018-11-30 | 彤程化学（中国）有限公司 | Recycling processing method containing Vulkacit M wastewater |
| CN109336330A (en) * | 2018-11-13 | 2019-02-15 | 彤程化学（中国）有限公司 | The high-efficient treatment method of rubber accelerator waste water |
| CN110002679A (en) * | 2019-04-19 | 2019-07-12 | 汤阴永新化学有限责任公司 | The processing method of organic wastewater in a kind of CTP synthesis process |
| CN112744971A (en) * | 2020-12-29 | 2021-05-04 | 科迈化工股份有限公司 | BT recycling device in mixed wastewater |
| CN114620853A (en) * | 2020-12-11 | 2022-06-14 | 圣奥化学科技有限公司 | Treatment method of process wastewater generated in production of rubber vulcanization accelerator DZ by sodium hypochlorite method |
| CN115448529A (en) * | 2022-08-10 | 2022-12-09 | 山东戴瑞克新材料有限公司 | Treatment process of concentrated mother liquor of CTP (computer to plate) wastewater of rubber scorch retarder |
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| CN102432136A (en) * | 2011-09-20 | 2012-05-02 | 科迈化工股份有限公司 | Method for treating wastewater of rubber vulcanization accelerator N-cyclohexyl-2-benzothiazole sulfonamide |
| CN103274564A (en) * | 2013-04-15 | 2013-09-04 | 南京工业大学 | Technology for treating waste water produced by rubber accelerator production |
| CN104496121A (en) * | 2014-12-17 | 2015-04-08 | 巨野县鑫源化工有限公司 | Method for treating wastewater by virtue of multi-stage catalytic oxidation, micro electrolysis and multi-effect evaporation |
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Patent Citations (3)
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| CN102432136A (en) * | 2011-09-20 | 2012-05-02 | 科迈化工股份有限公司 | Method for treating wastewater of rubber vulcanization accelerator N-cyclohexyl-2-benzothiazole sulfonamide |
| CN103274564A (en) * | 2013-04-15 | 2013-09-04 | 南京工业大学 | Technology for treating waste water produced by rubber accelerator production |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587476A (en) * | 2016-12-21 | 2017-04-26 | 科迈化工股份有限公司 | Method for treatment of mixed wastewater produced during production of rubber accelerator NS\CZ\DZ |
| CN107619145A (en) * | 2017-11-06 | 2018-01-23 | 山东阳谷华泰化工股份有限公司 | A kind of processing method of anti-recovery agent production waste water |
| CN107619145B (en) * | 2017-11-06 | 2020-11-17 | 山东阳谷华泰化工股份有限公司 | Treatment method of anti-vulcanization reversion agent production wastewater |
| CN108911415A (en) * | 2018-08-08 | 2018-11-30 | 彤程化学（中国）有限公司 | Recycling processing method containing Vulkacit M wastewater |
| CN109336330A (en) * | 2018-11-13 | 2019-02-15 | 彤程化学（中国）有限公司 | The high-efficient treatment method of rubber accelerator waste water |
| CN109336330B (en) * | 2018-11-13 | 2022-02-08 | 彤程化学（中国）有限公司 | Efficient treatment method of rubber accelerator wastewater |
| CN110002679A (en) * | 2019-04-19 | 2019-07-12 | 汤阴永新化学有限责任公司 | The processing method of organic wastewater in a kind of CTP synthesis process |
| CN114620853A (en) * | 2020-12-11 | 2022-06-14 | 圣奥化学科技有限公司 | Treatment method of process wastewater generated in production of rubber vulcanization accelerator DZ by sodium hypochlorite method |
| CN112744971A (en) * | 2020-12-29 | 2021-05-04 | 科迈化工股份有限公司 | BT recycling device in mixed wastewater |
| CN115448529A (en) * | 2022-08-10 | 2022-12-09 | 山东戴瑞克新材料有限公司 | Treatment process of concentrated mother liquor of CTP (computer to plate) wastewater of rubber scorch retarder |
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| CN105417822B (en) | 2018-03-27 |
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