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1
Content available Chlorella vulgaris auto-flocculation in wastewater treatment. Preface to granulation
Wang Chao, Wang Changwen, Sun Wenhui, Li Zixiang
Environment Protection Engineering
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2023
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Vol. 49, nr 1
45--56
EN
Microalgae wastewater treatment technology has not only the function of wastewater treatment but also biomass production, resource recovery, and biological carbon fixation with significant economic and environmental benefits. Good sedimentation of microalgae cells is the key to realize wastewater treatment and microalgae cell proliferation. In this study, short settling time in sequence batch reactors (SBRs) was utilizable as an environmental selection pressure to promote the auto-flocculation of Chlorella vulgaris treating synthetic domestic wastewater. After 60 days of operation, bacteria-microalgae consortia formed in the reactors, improving the settling efficiencies. Microalgae cultivation reactor with 30 min settling time had the largest flocs size and highest settling efficiency. Bacteria-microalgae granular sludge had a relatively high content of P, Fe, Mg, and Ca elements that both bacteria and microalgae coexisted and adhered to each other. The dominant bacteria distribution of bacteria-microalgae granular sludge was like that of aerobic granular sludge, which implied bacteria played a vital role in Chlorella vulgaris auto-flocculation. Lastly, the mechanism of Chlorella vulgaris auto-flocculation in wastewater treatment was interpreted.
2
Content available Research of the Dimethylamine Influence on Removal of Organic Pollution and Nitrogen in Wastewater
Makisha Nikolay
Ecological Engineering & Environmental Technology
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2021
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Vol. 22, iss. 2
92--103
EN
The research was carried out because of a survey of wastewater treatment plant of a chemical factory, which is planned to receive the dimethylamine-containing wastewater flow. It was essential to investigate the influence of dimethylamine and removal on organiс pollutants and nitrogen compounds as well as to determine the limiting concentration of dimethylamine. There were variable concentrations of dimethylamine (20–500 mg/L) under investigation in several simultaneous laboratory benches. The results showed that the dimethylamine concentration lower than 40 mg/L showed almost no impact on wastewater treatment; meanwhile, the growth of concentration up to 300 mg/L (and above) dropped the treatment efficiency by times.
3
Content available remote Stężenie tlenu rozpuszczonego a efektywność eliminacji związków węgla, azotu i fosforu w sekwencyjnym reaktorze porcjowym ze złożem ruchomym (MBSBBR)
Żubrowska-Sudoł M., Podedworna J.
Gaz, Woda i Technika Sanitarna
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2004
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Nr 2
62-69
EN
Sewage treatment research results with four ranges of dissolved oxygen concentration values. Concentration value ranges for analysed pollution factors in raw and processed sewage and their removal effectiveness for different concentrations of oxygen dissolved in oxygen phases of the processing cycle.
4
Content available remote Wstępne doświadczenia w usuwaniu azotu i fosforu w sekwencyjnym reaktorze porcjowym ze złożem zawieszonym
Podedworna J., Żubrowska-Sudoł M.
Gaz, Woda i Technika Sanitarna
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2001
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Nr 11
398-405
EN
Technological scheme of MBSBBR reactor working. Dependence between organic compounds consumption efficiency and deposit charging with theoretical ChZT charge in oxygen and oxygen-free phases. Methodics of research conduct and discussion on results.
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