SU1632948A1 - Method for sewage purification from organic substances - Google Patents
Method for sewage purification from organic substances Download PDFInfo
- Publication number
- SU1632948A1 SU1632948A1 SU894683729A SU4683729A SU1632948A1 SU 1632948 A1 SU1632948 A1 SU 1632948A1 SU 894683729 A SU894683729 A SU 894683729A SU 4683729 A SU4683729 A SU 4683729A SU 1632948 A1 SU1632948 A1 SU 1632948A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pentachlorophenol
- wastewater
- precipitate
- solution
- adsorbent
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000000746 purification Methods 0.000 title claims abstract description 10
- 239000000126 substance Substances 0.000 title claims description 3
- 239000010865 sewage Substances 0.000 title 1
- IZUPBVBPLAPZRR-UHFFFAOYSA-N pentachlorophenol Chemical compound OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl IZUPBVBPLAPZRR-UHFFFAOYSA-N 0.000 claims abstract description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003463 adsorbent Substances 0.000 claims abstract description 9
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 5
- 239000000706 filtrate Substances 0.000 claims abstract description 4
- 238000001179 sorption measurement Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 239000002244 precipitate Substances 0.000 claims abstract 7
- 235000014413 iron hydroxide Nutrition 0.000 claims abstract 4
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims abstract 4
- 238000000926 separation method Methods 0.000 claims abstract 2
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 2
- 229910052708 sodium Inorganic materials 0.000 abstract description 2
- 239000011734 sodium Substances 0.000 abstract description 2
- 239000004009 herbicide Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 4
- 239000008213 purified water Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000012492 regenerant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Изобретение относитс к очистке сточных вод, в частности к очистке сточных вод производства пентахлор- фенол та натри . Целью изобретени вл етс снижение расхода адсорбента, а также достижение безотходности процесса при сохранении высокой степени очистки от гербицидов. Сточные воды обрабатывают раствором хлорида железа последовательно при рН 6,0- 6,5 и 2,0-2,2 с отделением смешанного осадка пентахлорфенола и гидрок- сида железа, адсорбцию ведут фильтрованием через слой полисорба при рН 2-2,2 с последующей нейтрализацией фильтрата, полученный при этом осадок гидроксида железа и смешанный осадок обрабатывают хлористоводородной кислотой с получением раствора хлорида железа и осадка пентахлорфенола . Способ позвол ет уменьшить расход адсорбента ( в 85 раз) и дос- i тичь безотходности процесса. 1 табл. IThe invention relates to the treatment of wastewater, in particular to the treatment of wastewater from the production of pentachlorophenol and sodium. The aim of the invention is to reduce the consumption of the adsorbent, as well as to achieve waste-free process while maintaining a high degree of purification from herbicides. Wastewater is treated with a solution of ferric chloride successively at pH 6.0- 6.5 and 2.0-2.2 with separation of the mixed precipitate of pentachlorophenol and iron hydroxide, adsorption is carried out by filtration through a layer of polysorb at pH 2-2.2, followed by by neutralizing the filtrate, the precipitated iron hydroxide and the mixed precipitate are treated with hydrochloric acid to obtain a solution of ferric chloride and a precipitate of pentachlorophenol. The method makes it possible to reduce the consumption of the adsorbent (by a factor of 85) and to achieve a wasteless process. 1 tab. I
Description
Изобретение относитс к способам очистки промышленных сточных вод от органических веществ, в частности от пентахлорфенол та (ПХФ) натри , обладающего гербицидными и фунгицидными свойствами.This invention relates to methods for the purification of industrial wastewater from organic substances, in particular sodium pentachlorophenol (PCP), which has herbicidal and fungicidal properties.
Целью изобретени вл етс уменьшение расхода адсорбента, а также достижение безотходности процесса при сохранении высокой степени очистки сточных вод.The aim of the invention is to reduce the consumption of the adsorbent, as well as to achieve a waste-free process while maintaining a high degree of wastewater treatment.
Пример, Модельный раствор объёмом 10,8 л с рН 9 и концентрацией .ПХФ натри 8,8 г/л обрабатывают 123 мл раствора хлорида железа (III) концентрацией 13,116 г/л, что соответствует 150 мг/л в пересчете наExample: A model solution with a volume of 10.8 l with a pH of 9 and a concentration of .8.8 g / l of sodium PCP is treated with 123 ml of a solution of ferric chloride (III) with a concentration of 13.116 g / l, which corresponds to 150 mg / l in terms of
безводный FeClj. При перемешивании добавл ют 10,8 мл 0,001 М раствора хлористоводородной кислоты до достижени рН 6,0.anhydrous FeClj. With stirring, 10.8 ml of 0.001 M hydrochloric acid solution is added until pH 6.0 is reached.
Через 2 ч осветленную воду (I) декантируют, в оставшийс осадок добавл ют 100 мл 0,5 М хлористоводородной кислоты и отфильтровывают полученную взвесь. Полученный фильтрат используют дл осаждени ПХФ из осветленной воды (I) на второй стадии очистки путем добавлени при перемешивании 108 мл 0,5 М хлористоводородной кислоты до достижени рН 2.After 2 hours, the clarified water (I) is decanted, 100 ml of 0.5 M hydrochloric acid is added to the remaining residue, and the resulting suspension is filtered off. The obtained filtrate is used to precipitate PCP from clarified water (I) in the second purification stage by adding 108 ml of 0.5 M hydrochloric acid with stirring until pH 2 is reached.
Через 2 ч осветленную воду (II) фильтруют через вертикальную колонну, заполненную полисорбом 60/100 со After 2 h, the clarified water (II) is filtered through a vertical column filled with 60/100 polysorb
со кthe juice
SS
fcfc
0000
ростьй 1 м3/м2,ч. Диаметр колонны 17 мм, высота сло адсорбента в ко10Grow 1 m3 / m2, h. The diameter of the column is 17 mm, the height of the layer of adsorbent in Ko10
лонне 1000 мм, объем адсорбента в колонне 0,216 л. Процесс ведут до проскока в фильтрат 0,3 мг/л ПХФ, что соответствует ПДК. Всего до проскока пропускают через полисорб 80 л lonne 1000 mm, the volume of adsorbent in the column 0,216 l. The process is carried out until leakage into the filtrate is 0.3 mg / l PCP, which corresponds to the MPC. Just before the breakthrough pass through the Polisorb 80 l
Регенерацию полисорба провод т в этой же колонне путем фильтровани через адсорбент 750 мл 10%-ной NaOH при подогреве колонны до 70°С. Скорость подачи раствора регенеранта , О,3 м3/м2«ч. Степень регенерации по- J5 лйсорба 100%, Отрегенерированный полисорб отмывают 500 мл дистиллированной воды.Polysorb regeneration was carried out in the same column by filtration through an adsorbent with 750 ml of 10% NaOH with the column heated to 70 ° C. The feed rate of the regenerant solution, O, 3 m3 / m2 “h. The degree of regeneration by J5 Lysorb is 100%. The regenerated polysorb is washed with 500 ml of distilled water.
Очищенную воду нейтрализуют 10%- ной NaOH до.рН 7. Глубина очистки, 20 т.е. содержание пентахлорфенола в очищенной воде, составл ет 0,12 мг/л. Степень очистки 99,99%.Purified water is neutralized with 10% NaOH dop.pH 7. Purification depth, i.e. the content of pentachlorophenol in purified water is 0.12 mg / l. The degree of purification is 99.99%.
Результаты экспериментов при варь- ировании предлагаемых параметров 25 проведени процесса приведены в таблице .The results of experiments with the variation of the proposed parameters of the process 25 are shown in the table.
Представленные в таблице данные показывают, что только при проведении процесса в предлагаемом режиме после ,Q адсорбционной очистки концентраци ПХФ натри соответствует требовани м ПДК. Расход адсорбента дл достижени глубины очистки 0,3 мг/л по известному и предлагаемому способам составл 5 The data presented in the table show that only when carrying out the process in the proposed mode after Q adsorption purification, the concentration of sodium PCP meets the requirements of MPC. The consumption of the adsorbent to achieve a purification depth of 0.3 mg / l according to the known and proposed methods was 5
J5J5
ет 228,7 и 2,7 см3/м3 сточных вод,em 228.7 and 2.7 cm3 / m3 wastewater,
10ten
, J5 329484, J5 329484
Безотходность технологии обеспечива-j етс за счет повторного использовани пентахлорфенола и НХФ натри , выде- 5 ленных на стадии очистки сточных вод. Таким образом, предлагаемый способ позвол ет значительно уменьшить расход адсорбента (vв 85 раз) и Достичь безотходности процесса при высокой степени очистки сточных вод от ПХФ натри .Waste-free technology is provided by the reuse of pentachlorophenol and sodium NHF, which were identified at the wastewater treatment stage. Thus, the proposed method allows to significantly reduce the consumption of the adsorbent (vb 85 times) and to achieve the waste-free process with a high degree of purification of waste water from sodium PCP.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894683729A SU1632948A1 (en) | 1989-04-25 | 1989-04-25 | Method for sewage purification from organic substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894683729A SU1632948A1 (en) | 1989-04-25 | 1989-04-25 | Method for sewage purification from organic substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1632948A1 true SU1632948A1 (en) | 1991-03-07 |
Family
ID=21444019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894683729A SU1632948A1 (en) | 1989-04-25 | 1989-04-25 | Method for sewage purification from organic substances |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1632948A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7491337B2 (en) | 2004-04-23 | 2009-02-17 | Jeffbrad Investments Pty Limited | Method and apparatus for removing contaminants from water |
-
1989
- 1989-04-25 SU SU894683729A patent/SU1632948A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР Ни 1143694, кл. С 02 F 1/28, 1985. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7491337B2 (en) | 2004-04-23 | 2009-02-17 | Jeffbrad Investments Pty Limited | Method and apparatus for removing contaminants from water |
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