2023/8/21/ · Polyaluminum chloride (PAC) is used widely and increasingly in wastewater treatment plants, resulting in its inevitably high production in sludge. Previous studies have indicated that the production of short-chain fatty acids (SCFAs) is inhibited by the existence of PAC in sludge anaerobic fermentation, so it is necessary to study how to promote sludge
2021/1/15/ · 1. Introduction. Management of waste activated sludge (WAS) is now one big challenge faced by wastewater treatment plants due to its growing increase of production and high cost of treatment and disposal [1], [2].As a promising method to balance sludge reduction and resource recovery, WAS anaerobic fermentation has been recently drawn
2007/3/1/ · via in-line application of anaerobic treatment in closed circuits (paper kidney technology) further savings on the cost of fresh water intake and effluent discharge levies are generated. Since the early 1980s anaerobic treatment of industrial effluents has found widespread application in the pulp and paper Industry. Over 200 anaerobic plants are
2021/12/1/ · In this paper a different sludge pretreatment method, i.e., pretreating sludge at pH 10 for 8 d is reported, by which both waste activated sludge hydrolysis and acidification were increased, and
2004/3/31/ · Abstract. The activated paper mill sludge was treated with WF and some additives (sodium sulfide, nickel nitrate, ethyl acetate) for methane fermentation at . Optmum C/N ratio was 60 out of three
2014/11/15/ · Anaerobic digestion of pulp and paper mill waste at full-scale is currently confined to the treatment of a few selected types of effluent, and the resulting biogas is
2007/2/1/ · Although the use of anaerobic processes in the pulp-and-paper industry is not common, a number of mills have employed different anaerobic technologies because of lower sludge production, renewable
2016/7/1/ · The purpose of this work was to evaluate the effects of thermal pretreatment temperature (from 100 °C to 200 °C) and time (15–60 min) on the characteristics and the anaerobic biodegradability of wasted activated sludge from sugar and pulp mills. Reaction Curve model and First-order kinetics were used to obtain a better understanding of the data
Secondary treatment of pulp and paper mill wastewaters for biochemical oxygen demand (BOD) removal worldwide has traditionally been accomplished, and particularly in North America, by aerobic treatment processes, including aerated stabilization basin and activated sludge. including aerated stabilization basin and activated sludge. In recent ...
2024/5/1/ · 2.2. Semi-continuous operation of AnDMBR for sludge anaerobic fermentation. A schematic diagram and the operational mode of the AnDMBR and the properties of the DM are provided in the Supplementary Material.In stage 1, the sludge anaerobic fermenter was operated without DM, and 600 mL of pretreated sludge
2019/8/1/ · Co-digestion with grass silage, cow/pig manure or municipal sewage sludge should then be used to counteract the low nitrogen content of pulp and paper mill sludge. Keywords- Biogas, Anaerobic
2019/1/1/ · The proposed research envisioned to improve the accessibility of organics and hydrolysis of paper mill waste activated sludge for polyhydroxybutyrate production and anaerobic digestion. In order to fill this research gap an exploration has been made by adding lower dosage of calcium peroxide at acidic pH for the removal of exopolymeric
2022/5/1/ · With regard to nutrient supply, paper sludge is considered a suitable co-substrate for fermentation in anaerobic digestion MBTs. The higher heating values (HHV)
2020/5/10/ · Up-flow anaerobic sludge blanket (UASB) reactor belongs to high-rate systems, able to perform anaerobic reaction at reduced hydraulic retention time, if compared to traditional digesters. In this review, the most recent advances in UASB reactor applications are critically summarized and discussed, with outline on the most critical aspects for further …