SU971824A1 - Process for biochemical purifying of effluents from hexavalent chromium compounds - Google Patents
Process for biochemical purifying of effluents from hexavalent chromium compounds Download PDFInfo
- Publication number
- SU971824A1 SU971824A1 SU813306746A SU3306746A SU971824A1 SU 971824 A1 SU971824 A1 SU 971824A1 SU 813306746 A SU813306746 A SU 813306746A SU 3306746 A SU3306746 A SU 3306746A SU 971824 A1 SU971824 A1 SU 971824A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- hexavalent chromium
- chromium compounds
- effluents
- substrate
- biochemical
- Prior art date
Links
Classifications
-
- Y02W10/12—
Description
397182 к повыше шому расходованию нефтепродуктов . Целью изобретени вл етс сокращение продолжительности п{юцесса оадстки-. Поставленна uejTb достигаетс тем, что согласно способу биохимической очистки сто ных вод от соединений шестивалентного хрома в анаэробных услови х в присутствии субстрата, в качестве субстрата используют перлитолигносульфоиат, который преимуществен- g но примен ют в виде пористых гранул 1,0- 2,5 мм объемным весом 0,3-0,9 кг/дм . 4 Субстрат получают термообработкой перлита, смешанного с сульфитно-дрожжевой бражкой, вл юкцейс отходом целлюлозно-бумажной промышленности. Пример. Сточные воды, содержащие шестивалентный хром, подвергают биохимичес кой очистке, причем в качестве субстрата дл микроорганизмов используют перлитолигносульфонат , загруженный в биовосстановиталь в виде гранул 1,2-2,5 мм. Результаты проведенных экспериментов представлены в таблице.397182 to higher consumption of petroleum products. The aim of the invention is to reduce the duration of the {{oadski-) process. The delivered uejTb is achieved by the fact that, according to the method of biochemical purification of wastewater from hexavalent chromium compounds under anaerobic conditions in the presence of a substrate, perlitolignosulfoate is used as a substrate, which is predominantly used in the form of porous granules of 1.0-2.5 mm bulk weight of 0.3-0.9 kg / dm. 4 The substrate obtained by heat treatment of perlite mixed with a sulphite-yeast brew is a waste of the pulp and paper industry. Example. Wastewater containing hexavalent chromium is subjected to biochemical purification, and perlitholignosulfonate, loaded into the biostotrial in the form of granules 1.2-2.5 mm, is used as a substrate for microorganisms. The results of the experiments are presented in the table.
Концентраци , мг/лConcentration, mg / l
органического субстратаorganic substrate
до очисткиbefore cleaning
Перлитолигносульфонат (по предлагаемому изобретению)Perlitolignosulfonat (according to the invention)
5,625.62
9,609.60
12,6812.68
17,6517.65
29,029.0
Врем биохимического восстановлешм шестивалентного хрома при использовании в качестве субстрата перлитолигносульфоната составл ет 2,5-6,0 ч (исходные концентрации составл ют 16,60-52,50 мг/л). Врем биохимического восстановлени по прототипу равно 4,0-24,0 ч при исходных концентраци х 5,62-29,0 мг/л. В предлагаемом спосо.бе врем обработки значительно сокращаетс , при этом концентрации очищаемых от вод выше, чем в прототипе.The time of the biochemical reduction of hexavalent chromium when used as a substrate of perlitolignosulfonate is 2.5-6.0 h (initial concentrations are 16.60-52.50 mg / l). The biochemical recovery time of the prototype is 4.0-24.0 h with initial concentrations of 5.62-29.0 mg / l. In the proposed method, the treatment time is significantly reduced, and the concentration of water purified is higher than in the prototype.
К преимуществам предлагаемого способа очистки вод относ тс возможность создааи любой заданной объемной коние ггращ1и.The advantages of the proposed method of water purification include the ability to create any given volume horsepower.
рНpH
Врем очистки, чCleaning time, h
после очисткиafter cleaning
8,038.03
2,5 4,0 2.5 4.0
8,12 8,15 5,0 5,5 8,20 8,40 6,08.12 8.15 5.0 5.5 8.20 8.40 6.0
7,38 7.38
4,0 7,35 6,0 10,0 7,30 7,36 16,54.0 7.35 6.0 10.0 7.30 7.36 16.5
24,0 7,3.224.0 7.3.2
субстрата в биовосстановителе, а также закрепление в порах перлитолигносульфоната хромвосстанавливающей культуры, не вьптос щейс потоком очищенных вод. Это расшир ет область применени в промышленности предлагаемого изобретени .the substrate in the bioremediation, as well as the fixation in the pores of the perlite-lignosulfonate of a chromate-reducing culture that is not absorbed by the stream of purified water. This broadens the industrial scope of the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813306746A SU971824A1 (en) | 1981-04-10 | 1981-04-10 | Process for biochemical purifying of effluents from hexavalent chromium compounds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813306746A SU971824A1 (en) | 1981-04-10 | 1981-04-10 | Process for biochemical purifying of effluents from hexavalent chromium compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
SU971824A1 true SU971824A1 (en) | 1982-11-07 |
Family
ID=20965153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813306746A SU971824A1 (en) | 1981-04-10 | 1981-04-10 | Process for biochemical purifying of effluents from hexavalent chromium compounds |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU971824A1 (en) |
-
1981
- 1981-04-10 SU SU813306746A patent/SU971824A1/en active
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