Wyniki wyszukiwania - Biblioteka Nauki

1

Reclamation from palm oil mill effluent using an integrated zero discharge membrane-based process

100%

Ahmad A. L. , Idris I. , Chan C. Y. , Ismail S.

Polish Journal of Chemical Technology

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2015

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tom Vol. 17, nr 4

49--55

EN

This research emphasizes eloquently on membrane technology for treatment of palm oil mill effluent (POME) as it is the Malaysia’s largest and most important agro based industry. Findings established significant quality improvement with an efficient recovery of water from palm oil mill via innovative membrane application. Conventional bio-methods, whilst adhering to the Department of Environment’s (DOE) discharge regulations, produces brownish liquid which pales in comparison to the crystal clear water obtained through membrane treatment. The pre-treatment process consists of coagulation-flocculation using green environmental coagulant bases such as Moringa oleifera (MO) seeds. The ultrafiltration polyvinylidene difluoride (PVDF) and thin film composite (TFC) reverse osmosis were vital for the membrane processes. The system gave 99% suspended solids reduction in suspended solid and 78% of water present was successfully recovered. This technology guarantees water recovery with drinking water quality; meeting the US Environmental Protection Agency (USEPA) standard or could be recycled into the plant with sludge utilization for palm oil estates, thus enabling the concept of zero discharge to be executed in the industries. In addition, green and healthy antioxidants such as oil and beta-carotene can be recovered from POME further demonstrate. Silica gel showed better performance in separation of carotenes from oil at temperature 40°C using adsorption chromatography with 1154.55 ppm. The attractiveness of this technology, enabling the utilization of reuse of agricultural waste into potentially value added products.

2

Biopolishing of Domestic Wastewater Using Polyvinyl Alcohol – Supported Biofilm of Bacterial Strain Bacillus velezensis Isolate JB7

100%

Othman M. F. , Hasan H. A. , Muhamad M. H. , Babaqi B. S.

Journal of Ecological Engineering

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2023

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tom Vol. 24, nr 8

33--42

EN

Water pollution occurs due to the discharge of domestic waste mixed with residential, industrial, commercial, and agricultural wastewater. Conventional water treatment methods using aerobic/anaerobic methods can cause problems with the production of high green gases and result in the greenhouse effect. Microbial-based domestic sewage treatment technology using polyvinyl alcohol biofilm supporting media was introduced as an alternative measure to overcome this problem. The objective of the study was to determine the performance of polyvinyl alcohol beads in polishing domestic wastewater. In this study, the bacterium Bacillus velezensis isolate JB7 was used together with PVA as a raw material to treat domestic sewage wastewater more efficiently and stably. The results of the study show the effectiveness of domestic wastewater treatment in several factors such as pH value, chemical oxygen demand, phosphorus, nitrate, nitrite, ammonia, and total suspended solids. As conclusion, domestic wastewater treatment methods using polyvinyl alcohol beads are seen to be effective, reducing the use of sewage waste plant construction sites and able to avoid the use of non-recyclable materials such as plastics and synthetics.

3

Zarządzanie suszą w ujęciu dynamiki systemów

86%

Iwanicka Z. , Krupa K.

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tom nr 5

601--610

PL

W artykule przedstawiono problem budowy modelu systemu przyrodniczego, pozwalającego ocenić skutki podejmowanych decyzji w przypadku braku wystarczających zasobów wodnych. Rozpatrzono wpływ zmiany ceny wody przeznaczonej dla celów spożywczych i gospodarczych na jej zużycie. Pokazano również znaczenie recyklingu wody. Zasadniczym celem było zbudowanie dynamicznego modelu systemu, dającego możliwość jego obserwacji w odpowiedzi na zmianę parametrów wejściowych. Cel ten został osiągnięty.

EN

The paper presents the issues related to the construction of an environmental model, which allows to evaluate the impact of decisions during water shortage periods. The influence of the water price change used for drinking and other purposes was studied. Also the significance of water recycling was presented. The fundamental goal was the construction of a dynamic model of a system, that allows to observe its response to the change of input parameters. This goal has been achieved.

4

Woda w przemyśle spożywczym

72%

Zander Z. , Dajnowiec F. , Zander L.

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tom T. 64, nr 11

27-31

PL

W artykule omówiono problemy zużycia wody w przemyśle spożywczym. Wykazano, że konieczność spełnienia wymagań jakościowych dla wody technologicznej jest równie ważna jak jej odzyskiwanie i powtórne wykorzystanie. Przytoczono dane literaturowe dotyczące zużycia wody do przerobu surowców spożywczych jako przykłady ilustrujące wielkie zapotrzebowanie na wodę w procesach technologicznych i możliwości jej odzyskiwania. Przedstawiono działania prowadząc do zmniejszenia jednostkowego zużycia wody.

EN

Problems of water consumption in food processing industry have been discussed. It has been emphasized that the necessity of fulfilling quality requirements for technological water is as important as demand for its recycling and recovery. Literature data regarding water consumption for processing of raw materials in various branches of food industry are given as examples illustrating great requirements for water delivery during processing and possibilities of its recovery. Actions leading to reduction of water consumption per production unit are presented and discussed.

5

Możliwości recyklingu wody w przemyśle piwowarskim

72%

Kręgiel D.

Przemysł Spożywczy

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2023

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tom T. 77, nr 6

10--14

PL

Piwo jest piątym najczęściej spożywanym napojem na świecie, a branża browarnicza stanowi ważny segment gospodarczy w wielu krajach świata. Proces produkcji zużywa duże ilości wody i generuje nawet 10 l ściekow na 1 l wyprodukowanego piwa. Ścieki browarnicze zawierają wysokie poziomy węgla organicznego oraz fosforu i azotu, ale w porównaniu ze ściekami komunalnymi nie zawierają uciążliwych zanieczyszczeń, takich jak farmaceutyki czy patogeny pochodzenia jelitowego. Bogactwo związków organicznych w ściekach browarniczych sprawia, że mogą one stanowić wysokiej jakości składniki odżywcze dla hodowli drobnoustrojów. Zdaniem specjalistów, ścieki browarnicze powinny być poddawane recyklingowi, biorąc pod uwagę zmniejszające się zasoby wody i mocny trend gospodarki cyrkularnej. Artykuł ma na celu dokonanie syntetycznego przeglądu najważniejszych metod oczyszczania ścieków browarniczych.

EN

Beer is the fifth most consumed beverage in the world, and the brewing industry is an important economic segment in many countries of the world. The production proces consumes large amounts of water and generates up to 10 liters of wastewater per liter of beer produced. Brewery wastewater contains high levels of organic carbon, phosphorus and nitrogen, but compared to municipal wastewater, it does not contain nuisance pollutants such as pharmaceuticals or enteric pathogens. The richness of organic compounds in brewery wastewater makes it a high-quality nutrients medium for the cultivation of microorganisms. According to specialists, brewery wastewater should be recycled, taking into account the decreasing water resources and the strong trend of the circular economy. This article aims to provide a synthetic review of the most important methods of brewing wastewater treatment.

6

Improvement of atypical ground water conditioning processes

72%

Puszkarewicz A. , Kaleta J. , Piech A.

Environment Protection Engineering

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2009

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tom Vol. 35, nr 4

41-48

EN

Laboratory research into the treatment technology of ground water from the Huta Komorowska water intake was carried out. The water is drawn for drinking purposes. The results of research were used in order to improve water conditioning technology for the existing water treatment plant. This new technology is based on two stages of filtration. A water to be treated contains various forms of iron which forms chelates with humus compounds. They have to be removed in a contact coagulation process. In the first stage of filtration, raw water was passed through a triplex filter consisting of aquacleanit - support layer, quartz sand - proper layer and anthracite - surface layer. Coagulant SAX-18 (sodium aluminate) at the dose of 2 mg Al/dm3 proved to be most effective in reducing colour intensity, turbidity, iron content, oxygen demand and absorbance. It also increased pH, hence the water alkalinity, which made it less aggressive. In the frame of the second filtration stage, the filter with chemical active mass (Defeman) was used. The water in the first and second stages was filtered at the rate of 7.5 m/h.