WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL
The results of research on physical and chemical methods for the preliminary treatment of wastewater of a cardboard and paper factory in Khmelnytskyi region of Ukraine are presented. At the cardboard and paper factory, wastewater is treated at a sewage treatment plant, which includes sand traps, pri...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Lviv Polytechnic National University
2023-12-01
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| Series: | Environmental Problems |
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| Online Access: | https://science.lpnu.ua/ep/all-volumes-and-issues/volume-8-number-4-2023/ways-improve-efficiency-wastewater-treatment |
| _version_ | 1797368703006801920 |
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| author | Larysa Sabliy Veronika Zhukova Jakub Drewnowski |
| author_facet | Larysa Sabliy Veronika Zhukova Jakub Drewnowski |
| author_sort | Larysa Sabliy |
| collection | DOAJ |
| description | The results of research on physical and chemical methods for the preliminary treatment of wastewater of a cardboard and paper factory in Khmelnytskyi region of Ukraine are presented. At the cardboard and paper factory, wastewater is treated at a sewage treatment plant, which includes sand traps, primary radial sedimentation tanks, aeration tanks with activated sludge regenerators, secondary radial sedimentation tanks, and bioponds. The use of coagulation and chlorination methods before biological treatment in aeration tanks was proposed. Alumoflock 18% was used as a coagulant, polyacrylamide was used as a flocculant, and sodium hydroxide was used as an alkalizing reagent. The study was conducted on a mixture of industrial and domestic wastewater with COD and BOD5 – 3200 and 1575 mg/dm3, respectively, and on industrial wastewater with COD and BOD5 – 4480 and 1960 mg/dm3, respectively. The effects of reducing COD and BOD5 indicators in the first case after coagulation were 30 and 40%, after chlorination - 37.81 and 43.17%, respectively, in the second after coagulation - 28.57 and 47.24%, respectively. It was established that a significant proportion of organic substances according to the COD indicator is in a dissolved state - 60-70%. It has been proven that as a result of chlorination, the maximum reduction of "pure" COD is achieved, therefore, the possibility and expediency of chlorination of water after the secondary settling tank with increased doses should be considered in the wastewater treatment technology of the cardboard and paper factory. |
| first_indexed | 2024-03-08T17:36:25Z |
| format | Article |
| id | doaj.art-f381d129201c40f4a97a8574310b1b77 |
| institution | Directory Open Access Journal |
| issn | 2414-5955 2522-4417 |
| language | English |
| last_indexed | 2024-03-08T17:36:25Z |
| publishDate | 2023-12-01 |
| publisher | Lviv Polytechnic National University |
| record_format | Article |
| series | Environmental Problems |
| spelling | doaj.art-f381d129201c40f4a97a8574310b1b772024-01-02T12:19:05ZengLviv Polytechnic National UniversityEnvironmental Problems2414-59552522-44172023-12-018421021610.23939/ep2023.04.210WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILLLarysa Sabliy 0https://orcid.org/0000-0003-4217-3535Veronika Zhukova1https://orcid.org/0000-0002-8296-7519Jakub Drewnowski 2https://orcid.org/0000-0003-1424-0403National Technical University of Ukraine " Igor Sikorsky Kyiv Polytechnic Institute" National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"Gdansk University of TechnologyThe results of research on physical and chemical methods for the preliminary treatment of wastewater of a cardboard and paper factory in Khmelnytskyi region of Ukraine are presented. At the cardboard and paper factory, wastewater is treated at a sewage treatment plant, which includes sand traps, primary radial sedimentation tanks, aeration tanks with activated sludge regenerators, secondary radial sedimentation tanks, and bioponds. The use of coagulation and chlorination methods before biological treatment in aeration tanks was proposed. Alumoflock 18% was used as a coagulant, polyacrylamide was used as a flocculant, and sodium hydroxide was used as an alkalizing reagent. The study was conducted on a mixture of industrial and domestic wastewater with COD and BOD5 – 3200 and 1575 mg/dm3, respectively, and on industrial wastewater with COD and BOD5 – 4480 and 1960 mg/dm3, respectively. The effects of reducing COD and BOD5 indicators in the first case after coagulation were 30 and 40%, after chlorination - 37.81 and 43.17%, respectively, in the second after coagulation - 28.57 and 47.24%, respectively. It was established that a significant proportion of organic substances according to the COD indicator is in a dissolved state - 60-70%. It has been proven that as a result of chlorination, the maximum reduction of "pure" COD is achieved, therefore, the possibility and expediency of chlorination of water after the secondary settling tank with increased doses should be considered in the wastewater treatment technology of the cardboard and paper factory.https://science.lpnu.ua/ep/all-volumes-and-issues/volume-8-number-4-2023/ways-improve-efficiency-wastewater-treatmentindustrial wastewatercardboard and paper factorycoagulationalumoflockchlorination |
| spellingShingle | Larysa Sabliy Veronika Zhukova Jakub Drewnowski WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL Environmental Problems industrial wastewater cardboard and paper factory coagulation alumoflock chlorination |
| title | WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL |
| title_full | WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL |
| title_fullStr | WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL |
| title_full_unstemmed | WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL |
| title_short | WAYS TO IMPROVE THE EFFICIENCY OF WASTEWATER TREATMENT OF A CARDBOARD AND PAPER MILL |
| title_sort | ways to improve the efficiency of wastewater treatment of a cardboard and paper mill |
| topic | industrial wastewater cardboard and paper factory coagulation alumoflock chlorination |
| url | https://science.lpnu.ua/ep/all-volumes-and-issues/volume-8-number-4-2023/ways-improve-efficiency-wastewater-treatment |
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