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Waste activated sludge
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The protection of the environment through the recycling of waste brought back many economic-social benefits. Demand for the recycling of the large quantity of activated sludge derived from biological treatment stage of the wastewater treatment plant has become urgent in recent years. This study examined successfully the batch biosorption of Sulfur Brown GD on the recycled material prepared by the acid washing biomass of activated sludge.
5p
vidoctorstrange
06-05-2023
5
1
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The aim of this project is to provide a summary of the current knowledge on energy recovery options from wastewater treatment plants sludge and/or biosolids. This covers technologies as well as data from case studies and research experimental results. The focus of the study is the ATP. The project methodology comprised two stages. The first stage involved a review of the current literature.
166p
runthenight07
01-03-2023
4
2
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In this study, sludge-derived activated carbon or activated sludge was fabricated from the sludge generated by the WWTP of an industrial brewery through a pyrolysis technique to achieve a new adsorbent for ammonium removal.
13p
vidudley
20-02-2023
4
2
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In this study, the commercial powder activated carbon (PAC) was added to a bench scale conventional activated sludge (CAS) system to enhance phenol removal. The mixed liquor suspended solid (MLSS) concentration of CAS with adding PAC was stable in all stages of operation, while MLSS concentrations in CAS without PAC addition sharply decreased as the Phenol loading reached 1.8 g phenol/L.day.
7p
paddington36
04-01-2022
16
0
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This research presented some results on the physicomechanical properties and environmental pH effects of unburned materials made from WS, FA, and WG binder. The bonding and microstructure of the materials had to be studied by Fourier infrared spectroscopy (FTIR) and scanning electron microscope (SEM).
8p
nguaconbaynhay12
13-06-2021
12
1
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The combination of ultrasonic wave and H2O2 as a “green” AOP should be investigated as a post-treatment of the old landfill leachate for enhancement of biodegradation by using aerobic activated sludge. This simple combination would be expected not only to increase efficient treatment of landfill leachate by activated sludge, but also decrease amount of sludge waste.
9p
cothumenhmong9
04-01-2021
10
1
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This study, therefore, aimed to investigate the application of biochar from agricultural wastes to remove the excess nitrogen in domestic wastewater. In particular, this work examined the utilization of biochar obtained from coffee husk pyrolyzed at 350 oC to adsorb ammonium. Besides, adding biochar could be a simple and effective method for the initiation of activated sludge granulation to facilitate the treatment of low C/N ratio wastewater.
11p
cothumenhmong9
04-01-2021
13
2
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n developing countries, industrialization is the main cause of water pollution because of the various industries which generate wastewater that is needed to be discharged. The availability of fresh clean water is becoming increasingly limited in many areas of the world resulting in scarcity of potable water in many regions around the globe. The membranes have emerged as an efficient compact technology for municipal and industrial wastewater treatment.
17p
nguathienthan8
20-10-2020
23
1
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Recently, it has been indicated that anaerobic co-digestion of waste activated sludge with other waste streams at wastewater treatment plants is a promising strategy for enhancing methane production and materials recovery.
10p
vihamax2711
21-04-2020
15
2
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Anaerobic digestion of sludge has been an efficient and sustainable technology for sludge treatment but the low microbial conversion rate of its first stage requires sludge pretreatment, such as biological (aerobic, anaerobic conditions), thermal, mechanical (ultrasonication, lysiscentrifuge, liquid shear, grinding), and chemical (oxidation, alkali, acidic pretreatment, etc.) techniques.
34p
ketaucho
20-11-2019
17
2
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The objective of this work was to investigate effects of some key operation parameters serving sludge ultrasonication (US). First, a stirrer speed of 500 rpm was found to be convenient for sludge US pretreatment.
9p
sansan2
26-05-2018
23
3
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Pyrolysis to produce bio-oil from sewage sludge is a promising way, to not only improve the economical value, but also to reduce pollutants associated with sludge. The aim of this study was to evaluate the production of oil from primary, waste activated and digested sludges.
8p
tuananhhumg
04-11-2013
50
2
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In anaerobic lagoons, the bacterial activity reduces solids but often results in the production of odourous gases which makes a lagoon unsuitable except in isolated areas . Anaerobic 1 lagoons liquefy and break down manure solids, but not all wastes are totally degraded. The unprocessed solids settle at the bottom of the lagoon and accumulate as sludge. A lagoon has low initial cost and is easy to operate. Further labour can be saved by using irrigation to dispose of liquids .
73p
loginnhanh
22-04-2013
69
2
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Ever since the Industrial Revolution, industrial activities have been accompanied by a problem: industrial waste. The commensurate increase in industrialization, urbanization and population growth are leading to production of enormous quantities of industrial wastes that may cause degradation in environment and health hazards. On the other hand, the desire for a healthy environment increases, which leads to the need for better ways of waste minimization, pollution prevention and better use of resources in achieving the required industrial and environmental standards....
284p
qsczaxewd
25-09-2012
84
8
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WASTEWATER TREATMENT AND CONTROL Kevin D. Wills, M.S.E., P.E. Consulting Engineer Stanley Consultants, Inc. Design of a Complete-Mix Activated Sludge Reactor 13.3 Design of a Circular Settling Tank 13.10 Thickening of a Waste-Activated Sludge Using a Gravity-Belt Thickener 13.12 Design of an Aerobic Digester 13.14 Design of an Aerated Grit
56p
phuphong
09-12-2009
153
43
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