scholarly journals PRELIMINARY STUDY FOR A CLEANING AND WATER REUSE SYSTEM

2016 ◽  
Vol 13 (26) ◽  
pp. 127-133
Author(s):  
Alessandra Pezzini ◽  
Vandré B Brião ◽  
Luis A. B. DE BONI
Keyword(s):  
Water Reuse ◽  
Suspended Solids ◽  
Ammonia Nitrogen ◽  
Oil And Grease ◽  
Domestic Water ◽  
Treatment Tank ◽  
Odor Removal ◽  
Domestic Use ◽  
Preliminary Study ◽  
National Industry

Recent events related to the lack of water in Brazil demonstrated that the reuse of water is an issue that needs to be explored. In the present study, research was conducted to determine a source of domestic water that can be treated and reused with simple equipment, produced by national industry, or available in the domestic market. It was selected the treatment of the bathwater from the shower. The results of the parameters analyzed, pH, conductivity, color, turbidity, COD, phosphorus, total suspended solids, oil and grease, bacteria, total nitrogen, ammonia nitrogen, and total coliforms indicates that the model used needs adjustments, odor removal, and optimization of the effluent residence time in the treatment tank. Corrected these inconsistencies the system could be converted into a product for domestic use in regions where there is a shortage of water.

Preliminary Study on Reaction Kinetics of Ammonia Nitrogen in Aqueous Samples Removed by Microbial Nano-Silica Ball

2014 ◽  
Vol 1010-1012 ◽  
pp. 528-531
Author(s):  
Chao Yin ◽  
Jia Lu ◽  
Xiao Hou Shao ◽  
Xin Yu Mao ◽  
Long Wang ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Enrichment Culture ◽  
Kinetic Equations ◽  
Culture Liquid ◽  
Ammonia Nitrogen ◽  
Aqueous Samples ◽  
Nano Silica ◽  
N Removal ◽  
Preliminary Study ◽  
Kinetics Of

EM enrichment culture liquid was immobilized on nano-silica carrier to form microbial nano ball, so as to investigate the reaction kinetics of ammonia nitrogen (NH4+-N) by microbial nano ball. The results showed that first order reaction kinetics model could describe NH4+-N removal by different diameter microbial nano-silica balls well. And the microbe could keep higher biological activity between 0-72h. Reaction kinetic equations of NH4+-N were: (1) when diameter was 10mm, (0-48h), (48-72h); (2) when diameter was 20mm, (0-48h), (48-72h); (3) (0-48h), (48-72h).

scholarly journals Ultrafiltration Membrane Technology for Oily Wastewater Treatment

2021 ◽  
Vol 877 (1) ◽  
pp. 012012
Author(s):  
Zahraa N. Mahbouba ◽  
Abdulkhalik K. Mahmood ◽  
Musa H. Alshammari
Keyword(s):  
Water Reuse ◽  
Oil And Gas ◽  
Produced Water ◽  
Total Suspended Solid ◽  
Treatment Method ◽  
Suspended Solid ◽  
Ultrafiltration Membrane ◽  
Oil Field ◽  
Oily Wastewater ◽  
Oil And Grease

Abstract Oil and gas sectors generate large amounts of oily wastewater, which is called produced water. In which, it contains high concentrations of hazardous organic and inorganic pollutants. This paper attempts to evaluate the performance and quality of using a polyethersulfone ultrafiltration membrane (UFM) to treat the produced water of Al-Ahdab oil field (Wassit, Iraq). 8 rectangular flat sheets of polyethersulfone ultrafiltration membrane were used. The area of each is 60 cm2 and pore size about 15 nm used in the experimental work. Prepared UFM is characterized by determining the surface morphology by scanning electron microscopy (SEM). The result showed that the UFM indicated high removal efficiency in all parameters and especially oil and grease and total suspended solid but in general it still less than the requirement of water reuse. The results showed that, a combination of a conventional treatment method and UFM technology have higher efficiency than using UFM only.

Preliminary study on novel backwash cleaning for reverse osmosis fouling control in water reuse

2010 ◽  
Vol 10 (3) ◽  
pp. 296-301
Author(s):  
Jian-Jun Qin ◽  
Maung Htun Oo ◽  
Kiran A. Kekre
Keyword(s):  
Product Quality ◽  
Reverse Osmosis ◽  
Water Reuse ◽  
High Salinity ◽  
Full Scale ◽  
Elapse Time ◽  
Secondary Effluent ◽  
Fouling Control ◽  
Membrane Flux ◽  
Preliminary Study

We have demonstrated a novel backwash cleaning technique of direct osmosis (DO)-high salinity (HS) for reverse osmosis (RO) fouling control in water reuse. An UF-RO pilot system was continuously (24-h) operated on site with the secondary effluent as the feed over 4 months. The RO plant was run at 75% recovery and at the membrane flux of 17 l m−2 h−1 (LMH) to simulate the full scale NEWater production when DO-HS treatment was conducted once per day and five times per week during the last two months. Permeability of RO membranes as a function of elapse time of the pilot operation was monitored and compared over different durations. Impact of DO-HS treatment on RO product quality in terms of TOC and conductivity was investigated. It was concluded that the DO-HS treatment preliminarily demonstrated a benefit to low RO fouling rate by 2.5–4 times in 30–60 days without interruption on RO operation and impact on RO product quality.

scholarly journals Study on the Current Status and System of Water Reuse Standardization in China

2019 ◽  
Vol 118 ◽  
pp. 03012
Author(s):  
Xiaoxin Zhang ◽  
Jin Huang ◽  
Ling Lin ◽  
Sinan Zhang ◽  
Qing Ding
Keyword(s):  
Water Reuse ◽  
Standard System ◽  
Current Status ◽  
Domestic Water ◽  
Existing Problems ◽  
Depth Study ◽  
Domestic Policies

The paper examines the requirements of domestic policies and plans for water reuse standardization work, analyzes the current status and existing problems of domestic water reuse standards, builds China’s water reuse standard system and conducts an in-depth study on the structure and composition of the standard system.

Municipal wastewater characteristics at Irtah pumping station in the Tulkarem city

2000 ◽  
Vol 42 (1-2) ◽  
pp. 337-340 ◽  
Author(s):  
H.Q. Shaheen
Keyword(s):  
Dissolved Oxygen ◽  
Suspended Solids ◽  
Municipal Wastewater ◽  
Total Suspended Solids ◽  
Ammonia Nitrogen ◽  
Total Kjeldahl Nitrogen ◽  
Pumping Station ◽  
Kjeldahl Nitrogen ◽  
Sodium And Potassium ◽  
Mixed Samples

Wastewater flow samples were collected at 2-hour intervals for one week during the month of October 1998 at the Irtah wastewater pumping station in the Tulkarem city. The station collects about 32% of the wastewater of the Tulkarem city and 25% of the Tulkarem camp. The samples were mixed on 24-hour basis and tested for the pollution parameters BOD5, COD, total suspended solids, orthophosphate, total Kjeldahl nitrogen, ammonia nitrogen, nitrate, calcium, sodium and potassium. At the 2-hour intervals the wastewater flow was tested for conductivity, temperature, pH, and dissolved oxygen. The variation of the strength of these parameters and its relation to the flow values are observed and evaluated. The produced organic strength versus the flow and the 24-hour mixed samples are presented and commented upon.

Innovative Stormwater Treatment Implementation at Parking Lot in China

2011 ◽  
Vol 255-260 ◽  
pp. 2718-2721
Author(s):  
Ru Zhang ◽  
Anthony N. Tafuri ◽  
Richard Field ◽  
Shaw L. Yu ◽  
Wen Bin Zhou ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Low Impact Development ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Stormwater Treatment ◽  
Storm Events ◽  
Nonpoint Sources ◽  
Treatment Implementation ◽  
Parking Lot

Xikeng Reservoir is one of the major water supply reservoirs in Shenzhen. The water quality of Xikeng Reservoir has been poor, with much of the pollution coming from nonpoint sources. An innovative low impact development type of BMP called the BioBox was used at the Administration Building parking lot location, as a research site and demonstration project to show how small alterations to parking lot designs can dramatically decrease pollutant loads. Manual samples were collected during storm events and analyzed for total suspended solids (TSS); five-day biochemical oxygen demand (BOD5); ammonia nitrogen (NH3-N), and total phosphorus (TP). In summary, the ranges of removal rates of the BioBox are: TSS 70% - 90%; BOD5 20% - 50%, and ammonia and phosphorus 30% - 70%. The BioBox system effectively reduced the concentrations of pollutants in the parking lot runoff.

Pilot-scale SBR and MF operation for the removal of organic and nitrogen compounds from greywater

1998 ◽  
Vol 38 (6) ◽  
pp. 79-88 ◽  
Author(s):  
Hang-Sik Shin ◽  
Sang-Min Lee ◽  
In-Seok Seo ◽  
Goo-Oung Kim ◽  
Kyeong-Ho Lim ◽  
...  
Keyword(s):  
Water Reuse ◽  
Suspended Solids ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Suspended Solid ◽  
Office Building ◽  
Constant Concentration ◽  
Cyclic Operation ◽  
Final Effluent

A pilot plant of SBR (Sequencing Batch Reactor) and MF (microfiltration) process was operated in order to treat and reuse the greywater produced from an office building. The performance of SBR for greywater was satisfactory as the effluent had 20 mg/l, 5 mg/l, and 0.5 mg/l of SCOD, BOD, and ammonia, respectively. The cyclic operation of SBR used in this study proved more effective in nitrification and denitrification than the conventional SBR operation. However, the most effective mode was step-feed SBR for denitrification. The decanting system of this SBR discharged the effluent fairly well without sludge washout. However, it was difficult to maintain constant concentration of suspended solid from the SBR process. Thus, additional filtration was needed to get adequate water quality for water reuse. MF could remove residual suspended solids and pathogens as well from the SBR effluent. The suspended solids of final effluent were around 1 mg/l and allowed using the treated water for some purposes.

scholarly journals Assessment of the Water and Sediment Quality of Tropical Forest Streams in Upper Reaches of the Baleh River, Sarawak, Malaysia, Subjected to Logging Activities

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Teck-Yee Ling ◽  
Chen-Lin Soo ◽  
Jagath-Retchahan Sivalingam ◽  
Lee Nyanti ◽  
Siong-Fong Sim ◽  
...  
Keyword(s):  
Water Quality ◽  
Suspended Solids ◽  
Sediment Quality ◽  
Ammonia Nitrogen ◽  
Large Temperature ◽  
Water And Sediment ◽  
Water And Sediment Quality ◽  
Forest Streams ◽  
The Impact

The study of the impact of logging activities on water and sediment quality of Sarawak forest streams is still scarce despite Sarawak being the largest exporter of timber in Malaysia. This study was aimed at determining the water and sediment quality of forest streams in Sarawak and the potential impact of logging activities. In situ parameters were measured, and water and sediment samples were collected at six stations before rain. Additionally, water quality was investigated at three stations after rain. The results showed that canopy removal resulted in large temperature variation and sedimentation in the forest streams. Lower suspended solids were found at stations with inactive logging (<2 mg/L) compared to active logging (10–16 mg/L) activities. The highest concentration of total nitrogen and total phosphorus in water and sediment was 4.4 mg/L, 77.6 μg/L, 0.17%, and 0.01%, respectively. Besides, significantly negative correlation of sediment nitrogen and water total ammonia nitrogen indicated the loss of nitrogen from sediment to water. Water quality of the streams deteriorated after rain, in particular, suspended solids which increased from 8.3 mg/L to 104.1 mg/L. This study reveals that logging activities have an impact on the water quality of Sarawak forest streams particularly in rainfall events.

scholarly journals Treatment of wastewater from a carbon monoxide production unit aimed at water reuse

2013 ◽  
Vol 3 (2) ◽  
pp. 111-118 ◽  
Author(s):  
R. B. Almada ◽  
G. A. T. Fontoura ◽  
D. M. Bila ◽  
G. L. Sant'Anna ◽  
M. Dezotti
Keyword(s):  
Carbon Monoxide ◽  
Activated Carbon ◽  
Water Reuse ◽  
Suspended Solids ◽  
Combined Treatment ◽  
Production Unit ◽  
Treated Wastewater ◽  
Quality Level ◽  
Process Conditions ◽  
Treatment Unit

The industrial wastewater from a carbon monoxide production unit was treated by physico-chemical processes in order to achieve a quality level appropriate for reuse. In preliminary tests, coagulation/flocculation (CF), sand filtration and activated carbon adsorption were investigated in order to select the materials and the process conditions. Based on the results a combined treatment was proposed: CF followed by down-flow filtration in a combined medium (sand and granular activated carbon). The results obtained in a bench-scale treatment unit showed that the combined treatment removed wastewater turbidity (95%), total suspended solids (97%), volatile suspended solids (81%), chemical oxygen demand (74%) and dissolved organic carbon (65%). Polycyclic aromatic hydrocarbons (PAHs) were removed to non-detectable levels. The residual conductivity of the treated wastewater is a matter of concern, and considering the water characteristics of this industrial process, a reuse scheme was proposed based on on-line monitoring and control of conductivity and partial reuse of the treated wastewater.

Performance of an expanded granular sludge bed (EGSB) reactor coupled with anoxic and aerobic bioreactors for treating poultry slaughterhouse wastewater

2016 ◽  
Vol 11 (1) ◽  
pp. 86-92 ◽  
Author(s):  
M. Basitere ◽  
Y. Williams ◽  
M. S. Sheldon ◽  
S. K. O. Ntwampe ◽  
D. De Jager ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Low Cost ◽  
Oxygen Demand ◽  
Granular Sludge ◽  
Cod Removal ◽  
Oil And Grease ◽  
Dissolved Air Flotation ◽  
Slaughterhouse Wastewater ◽  
Anaerobic Reactor ◽  
Aerobic Bioreactors

Generally, slaughterhouses have the largest consumption of fresh water and thus generate large quantities of high strength wastewater, which can be treated successfully using low cost biological treatment processes. In this study, the feasibility of using an expanded granular sludge bed (EGSB) anaerobic reactor coupled with anoxic and aerobic bioreactors for the treatment of poultry slaughterhouse wastewater was investigated. The poultry slaughterhouse was characterized by high chemical oxygen demand (COD), 2 to 6 g/L, with average biological oxygen demand of 2.4 g/L and average fats, oil and grease (FOG) being 0.55 g/L. A continuous EGSB anaerobic reactor was operated for 26 days at different hydraulic retention times (HRT), i.e. 7, 4, 3 days, and organic loading rates (OLR) of 0.5, 0.7 and 1.0 g COD/L.day, respectively, to assess the bioremediation of the poultry slaughterhouse wastewater. The average COD removal from the EGSB was 40%, 57% and 55% at the different OLR and HRT assessed. At high OLR of 1.0 g COD/L.day, the overall COD removal from the system (EGSB-anoxic/aerobic) averaged 65%. The system experienced periodical sludge washout during high FOG and suspended solids loading. It was concluded that the EGSB system requires a dissolved air flotation system, for FOG/suspended solid reduction, as the performance of the overall system was observed to deteriorate over time due to the presence of a high quantity of FOG including suspended solids.

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