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Introduction. Dyes are colored aromatic organic compounds that absorb light and give color to the visible area. It is widely used in textile, food, rubber, , cosmetics, pharmaceutical, plastic, concrete and paper industries 1, 2.The textile industry is the first application field that generates a significant amount of wastewater from dyeing …
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This review is an attempt to outline the benefits of anaerobic wastewater treatment in combination with subsequent aerobic treatment (Section 2), as well as the current state and the potential of anaerobic wastewater treatment for effluents from various mill processes (Section 3).Earlier studies investigated the feasibility of anaerobic …
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Combined anaerobic digestion of oil mill effluent(OME) together with manure, waste (HHW) orsewage sludge was investigated. In batch experimentsit was shown that OME could be degraded into biogaswhen codigested with manure. In codigestion with HHWor sewage sludge, OME dilution with water (1:5) wasrequired in …
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In this work, the evolution of polyphenolic compounds was studied during co-composting of olive mill wastewater sludge and poultry manure, based on qualitative (G-50 sephadex) and quantitative (Folin-Ciocalteu), as well as high pressure liquid chromatography analyses. Results showed a significant polyphenolic content decrease of 99% and a ...
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The technique of using biochar-based catalysts in persulfate activation is a promising alternative to remov emerging and refractory pollutants (e.g., tetracycline-) in wastewater. However, the situation of biochars derived from waste pulp/paper mill sludge is still unclear. The pulp/paper mill sludge biochars (SBC300, SBC500, and SBC700) …
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Activated sludge plants at kraft pulp mills have a retention time of about 15–48 h. The solids concentration in the activated sludge systems is typically 2000–6000 mg/L. The hydraulic residence time is 4–8 h for a conventional system and the cellular residence time (sludge age) is normally 5–15 days. ... In pulp mill wastewater, bulking ...
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Anaerobic co-digestion of olive mill wastewater (OMW) and sewage sludge (SS) is a promising technique in terms of biogas production and quality. An OMW mixture was subjected to pre-treatment (thermal drying), which can reduce the total COD by 72.8% of 10% OMW mixture. OMW mixtures at concentrations of 2, 5, and 10% were tested. …
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Wastewater treatment plant sludge production is enormous and prone to secondary environmental pollution while producing sludge biochar using pyrolysis treatment is a promising way to reuse it [9]. ... Overall, this study presents a new understanding of the role of sludge biochar ball mill-loaded Mn 2 O 3 composite …
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In this paper, one technology with "ball mill + ozone-catalyzed oxidation" as the core was studied to treat the oily sludge from the tank bottom, and the process parameters of ball milling and ozone-catalyzed oxidation were respectively optimized. ... The sludge waste has potential to be a good carbon precursor but a template to …
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In this paper, air-dried lake sludge was pretreated by ball milling, and then pyrolysed at 600°C to prepare lake sludge-derived ball milling biochar, and Fe 3 O 4 was loaded on lake sludge-derived ball milling biochar by chemical precipitation. Scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier-transform infrared …
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Highlights Coffee ground, olive mill wastewater sludge and poultry manure were co-composted. Effect of Trametes versicolor on the humification process was investigated. Compost was mature with germination index of 120% after 20 wk composting. Inoculation improved 1.75 times humic acid production at the end of the process. …
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The impact of attrition ball-mill pretreatment on food waste particle size, soluble chemical oxygen demand (SCOD), biochemical methane potential, and microbial community during anaerobic digestion was investigated based on milling speed and time. The uniformity of particle size improved with increasing milling speed and time. The …
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SSA samples were introduced into the bottle-mill containing 98 balls of alumina (2 cm diameter) and were ground during 2.5, 5 and 10 minutes. ... and the microbial cells produced during the aerobic treatment of the wastewater (secondary sludge). The treatment and stabilization of sewage sludge have become major contributors to the …
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Biological paper mill sludge (BS) was provided by a local mill that employs the kraft elemental chlorine free pulp production process. Adsorbents based on BS were produced by pyrolysis following the procedure described by Calisto et al. (2014), using the optimum conditions of temperature and time of pyrolysis. Briefly, BS was dried in an …
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Introduction. Aerobic activated sludge plants (ASPs) are commonly used to treat wastewaters in pulp and paper mills e.g. in Finland. In the ASPs, the amount and characteristics of the produced secondary sludge vary according to the raw materials and processes used in the pulp and paper manufacturing process, and also according to the …
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The fermented wastewater was fed to a continuous flow activated sludge system (Fig. 1).This system consisted of a 125. mL reactor (selector) followed by a 2 L reactor (main reactor) with sludge recycling to the selector.. Both reactors were aerated and temperature controlled at 30 °C.The inflow was 600 mL/day and the sludge return …
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Ball mill-increases the sludge specific surface area ... Several research studies have been conducted on utilizing TPAD to predigest SS. A recent study performed TPAD on wastewater sludge digestion and found a 77% reduction in VS along with a methane release rate of 3.55 ± 0.47 L CH 4 /L day at 45 °C [159].
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Journal Highlight: Mechanochemical treatment causes the formation of mineral Cl compounds during the degradation of polychlorinated compounds by planetary ball mill. In the present study, the three types of industrial waste comprising of sludge from petrochemical wastewater treatment plants as source of pollutants, scrap iron and …
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The classical first-order model described better the flotation process of oil sludge. • The wastewater is recycled in the flotation process without discharge. ... Effect of "ball mill + flotation" combined process on treating oil sludge of tank bottom. Chinese J. Environ. Eng., 13 (5) (2019), pp. 1186-1193, 10.12030/j.cjee.201811020
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The effects of ball mill pretreatment and Mn catalytic ozonation on the reduction of sewage sludge were investigated. The ball mill pretreatment increased ΔSCOD from 2,000mg/L to 9,000 mg/L, as Total Solids (TS) increased from 1% to 4% at a specific energy of 75.8 KJ/g-TSS. The increase in disintegration ratio (DR), which is an …
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