SU656979A1 - Method of biological purification of waste water of pulp and paper industry - Google Patents
Method of biological purification of waste water of pulp and paper industryInfo
- Publication number
- SU656979A1 SU656979A1 SU772448374A SU2448374A SU656979A1 SU 656979 A1 SU656979 A1 SU 656979A1 SU 772448374 A SU772448374 A SU 772448374A SU 2448374 A SU2448374 A SU 2448374A SU 656979 A1 SU656979 A1 SU 656979A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnesium
- potassium
- pulp
- sludge
- activated sludge
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Removal Of Specific Substances (AREA)
- Activated Sludge Processes (AREA)
Description
Изобретение относитс к способам биологической очистки сточных вод дефицитных по биогенным элементам, например, промстоков целлюлознобумажной , фотохимической промашленИостей производства искусственного йс окна и др. Известно введение в сток при био логической очистке в качестве биоге ных элементов азота,фосфора,кали , магни и др. 1. Указанные биогенные добавки ввод тс в избытке, оптимальные их доз не установлены, что приводит к мине рализации очищенного стока. Известен способ биологической очистки сточных вод целлюлозно-бума ной промьшшенности аэрацией с актив ным илом и введением солей азота и фосфора до концентраций, обусловлен ных загр зненностью сточной воды по Р 100 БПКе (БПК, последующим отстаиванием и рециркул цией активного ила. О&ачно в качестве источника азот Используют сульфат аммони , аммиачную воду или аммофос, а фосфор ввод т в виде раствора аммофоса или во ной выт жки суперфосфата 2. Недостатком очистки по указанному способу вл етс большой .вынос взвеси, превышающий допустньвае нормы сйуска сточных вод в водоеьш. Целью изобретени вл етс повышение степени очистки сточных вод. Поставленна цель достигаетс введением в качестве биогенных добавок соединений, содержащих калий и магний до концентраций кали и магни 5,7-7,0 и 11,2-14,0 мг/л соответственно. Предпочтительно , с целью создани оптимальных условий дл сорбции микроорганизмами активного ила, калий и магний ввод т в рециркулируекый ил. Способ позвол ет улучшить седименТсщионные и флокулирующие свойства активного ила, повышает эффект очистки сточных вод производства целлюлозно-бумажной промлшленности по взвешенным вещесггвам в 2,5 раза. При этом минерализаци очищенной сточной жидкости не повышаетс . Пример . В исходную сточную воду добавл ют соединени азота в виде аммиачной воды и аммофоса и фосфор в виде аммофоса до соотношений ( БПК5 : N ; Р 100 Внесение аммиачной воды осуществ ют в камеру смаиени после усреднигел , а аммофоса - в возвратный ил (нижний иловый канал аэротенков).The invention relates to methods for biological treatment of wastewater deficient in nutrients, for example, industrial pulp paper and photochemical plants, production of artificial windows, etc. It is known to introduce biological wastewater as nitrogen, phosphorus, potassium, magnesium, etc. 1. The above biogenic additives are introduced in excess, their optimal doses have not been established, which leads to the mineralization of the purified runoff. A known method of biological treatment of wastewater pulp and paper industry by aeration with active sludge and the introduction of salts of nitrogen and phosphorus to concentrations due to contamination of wastewater by P 100 BOD (BOD, subsequent sedimentation and recirculation of active sludge. About Nitrogen is used as a source of ammonium sulfate, ammonia water or ammonium phosphate, and phosphorus is introduced as ammonium phosphate solution or military superphosphate extract 2. The lack of purification according to this method is a large amount of suspended matter. The purpose of the invention is to increase the degree of wastewater treatment. The goal is achieved by introducing compounds containing potassium and magnesium as nutrient additives to potassium and magnesium concentrations of 5.7-7.0 and 11.2-14. , 0 mg / l, respectively. Preferably, in order to create optimal conditions for sorption of activated sludge by microorganisms, potassium and magnesium are introduced into recirculated sludge. The method improves the sedimentation and flocculation properties of water production of pulp and paper production by weighted substances 2.5 times. At the same time, the mineralization of the treated wastewater does not increase. An example. Nitrogen compounds in the form of ammonia water and ammophos and phosphorus in the form of ammophos are added to the initial wastewater to the following ratios (BOD5: N; P 100 Ammonia water is introduced into the smearing chamber after averaging, and ammophos to return sludge (lower sludge channel of aeration tanks) ).
Внесение соединений, содержащих калий и магний, до концентраций кали и магни 5,7-7,0 и 11,2-14,О .мг/л соответственно, осуществ- ют в рециркулируемый ил вместе с аммофосом, шлам которого вл етс дополнительным источником этих элементов.The addition of potassium and magnesium containing compounds up to potassium and magnesium concentrations of 5.7-7.0 and 11.2-14, O mg / l, respectively, is carried out into recycled sludge together with ammophos, the sludge of which is an additional source of these elements.
Результаты очистки по предлагаемому и известному способу приведены в таблице.The cleaning results for the proposed and known method are shown in the table.
Эффект очистки,%The cleaning effect,%
ВПК MIC
ХПКCOD
NN
РR
Взвешенные веществаSuspended substances
Качество активного илаActive sludge quality
Вынос ила из вторичнЕлхRemoval of sludge from the secondary
отстойников, мг/лsumps, mg / l
Иловый индекс, мг/лSludge index, mg / l
Концентраци нуклеиновых киNucleic acid concentration
Дегидрогеназна активность,Dehydrogenase activity,
мг формазана/г ила минmg formazan / g sludge min
. , Мин али 3 аци г/л . , Min Ali 3 Aci g / l
Поступающа сточна жидкостIncoming waste liquid
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772448374A SU656979A1 (en) | 1977-02-04 | 1977-02-04 | Method of biological purification of waste water of pulp and paper industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772448374A SU656979A1 (en) | 1977-02-04 | 1977-02-04 | Method of biological purification of waste water of pulp and paper industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU656979A1 true SU656979A1 (en) | 1979-04-15 |
Family
ID=20693972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772448374A SU656979A1 (en) | 1977-02-04 | 1977-02-04 | Method of biological purification of waste water of pulp and paper industry |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU656979A1 (en) |
-
1977
- 1977-02-04 SU SU772448374A patent/SU656979A1/en active
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