Use of zoogloeal culture for enhancing tannery wastewater treatment: High organic loading and unbalanced nutrient condition

1997 ◽  
Vol 32 (4) ◽  
pp. 1001-1011
Author(s):  
Dae Hee Ahn ◽  
Yun‐Chul Chung ◽  
Young Je Yoo ◽  
Jin Young Jung
Keyword(s):  
Wastewater Treatment ◽  
Tannery Wastewater ◽  
Organic Loading ◽  
Nutrient Condition

Tannery Wastewater Treatment Using a Sequencing Batch Membrane Reactor

1991 ◽  
Vol 23 (7-9) ◽  
pp. 1639-1648 ◽  
Author(s):  
Kazuo Yamamoto ◽  
Khin Muang Win
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Membrane Reactor ◽  
High Strength ◽  
Tannery Wastewater ◽  
Nitrifying Bacteria ◽  
Organic Loading ◽  
Total Chromium ◽  
Cr Content ◽  
Sludge Concentration

The feasibility of a new system, SBMR (Sequencing Batch Membrane Reactor) was investigated for tannery wastewater treatment which includes high strength organic matter and a heavy metal, chromium. This system consists of a hollow fiber microfiltration unit in a SBR for solid-liquid separation, which aims to enhance sludge concentration in the reactor for stable removal of organic matter and heavy metals. The removal efficiency of COD and Total Chromium was 93.7 to 96.3% and 95.4 to 97.7%, respectively. The critical sludge concentration was found between 30,000 and 40,000 mg/l in order to keep stable filtration. Lower SRT gave lower Cr content in the sludge under constant organic loading. Higher organic loading gave lower Cr content at fixed SRT except for the longest SRT case. SRT of 20 days gave the highest ammoniacal/total nitrogen removal. A short SRT of 10 days gave adverse effect on nitrifying bacteria because of their low growth rate. Judging from the process stability in the light of the removal of organic matter, nitrogen and chromium and the flux, the SRT of 20 days was the best among 10, 20, 550 days. There must exist an appropriate combination of SRT and volumetric organic loading. When SRT of 20 days is selected, it is recommended that the volumetric organic loading be kept less than 8 kgCOD/m3d.

RESEARCH AND EVALUATE TREATMENT EFFICIENCY ON TAPIOCA PROCESSING INDUSTRIAL WASTEWATER BY AEROBIC BIOFILTER TECHNOLOGY WITH VARIOUS MATERIALS

2010 ◽  
Vol 13 (3) ◽  
pp. 54-66
Author(s):  
Phuong Thi Thanh Nguyen ◽  
Phuoc Van Nguyen ◽  
Anh Cam Thieu
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Utilization Rate ◽  
Organic Loading ◽  
Treatment Efficiency ◽  
Research Results ◽  
Loading Rates

This study was performed to evaluate the efficiency of tapioca processing wastewater treatment using aerobic biofilter with variety of biofilter media: coir, coal, PVC plastic and Bio - Ball BB15 plastic. Research results in the lab demonstrated all four aerobic biofilter models processed can treated completely N and COD which COD reached 90-98% and N reached 61-92%, respectively, at the organic loading rates in range of 0.5, 1, 1.5 and 2 kgCOD/m3.day. The results identified coir filter was the best in four researched materials with removal COD and specific substract utilization rate can reach 98%, and 0.6 kg COD/kgVSS.day. Research results open the new prospects for the application of the cheap materials, available for wastewater treatment.

Experimental Study on Bioprocess for Pig Tannery Wastewater Treatment*

2010 ◽  
Vol 16 (2) ◽  
pp. 285-288 ◽  
Author(s):  
Weibin TANG ◽  
Houzhen ZHOU ◽  
Zhouliang TAN ◽  
Xudong LI
Keyword(s):  
Experimental Study ◽  
Wastewater Treatment ◽  
Tannery Wastewater

Simultaneous Sludge Minimization, Pollutant and Nitrogen Removal Using Integrated MBBR Configuration for Tannery Wastewater Treatment

2021 ◽  
pp. 125748
Author(s):  
Vijay Sodhi ◽  
Charanjit Singh ◽  
Puneet Pal Singh Cheema ◽  
Reena Sharma ◽  
Ajay Bansal ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Tannery Wastewater ◽  
Sludge Minimization

Ultrafiltration membrane separation for anaerobic wastewater treatment

1994 ◽  
Vol 30 (12) ◽  
pp. 321-327 ◽  
Author(s):  
Ahmadun Fakhru'l-Razi
Keyword(s):  
Wastewater Treatment ◽  
Membrane Separation ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Reactor Performance ◽  
Water And Wastewater Treatment ◽  
Active Biomass ◽  
Biomass Loss ◽  
Scientists And Engineers ◽  
Uf Membranes

Membrane technology has attracted a lot of attention from scientists and engineers in recent years as a new separation process. Various membrane technologies such as reverse osmosis (RO), ultrafiltration (UF) and microfiltration (MF) have been successfully used for a variety of water and wastewater treatment applications. In this study UF membranes of 10 000 nominal molecular weight limit were used in conjunction with an anaerobic reactor to treat wastewater from a brewery. The UF membranes serve to retain active biomass in the reactor, which is essential for a good reactor performance and for the production of a clear final effluent. The reactor was operated over a range of hydraulic retention times and organic loading rates (OLR) in order to evaluate its treatment efficiency. Six steady states were attained over a range of mixed liquor suspended solids (31 000-38 000 mg 1−1). The maximum organic loading rate applied was 19.7 kg COD m−3 d−1 resulting in a methane yield of 0.27 1 CH4 g−1 COD. The percentages of COD removal achieved were above 96%. The results indicated that the UF membranes were capable of efficient biomass-effluent separation thus preventing any biomass loss from the reactor and have potential for treating industrial wastewaters.

Integration of chemical and biological oxidation in a SBBR for tannery wastewater treatment

2004 ◽  
Vol 50 (10) ◽  
pp. 107-114 ◽  
Author(s):  
C. Di Iaconi ◽  
F. Bonemazzi ◽  
A. Lopez ◽  
R. Ramadori
Keyword(s):  
Wastewater Treatment ◽  
Chemical Oxidation ◽  
Biofilm Reactor ◽  
Flow Dynamics ◽  
Laboratory Scale ◽  
Tannery Wastewater ◽  
Biological Degradation ◽  
Bed Porosity ◽  
Sequencing Batch Biofilm Reactor ◽  
Innovative Process

This paper reports the results of an investigation aimed at evaluating the laboratory-scale performance of an innovative process for treating tannery wastewater. In this process, biological degradation, carried out in a sequencing batch biofilm reactor (SBBR), is combined with chemical oxidation by ozone. Tannery wastewater treatment was carried out, at laboratory scale, on a real primary effluent coming from a centralised plant treating wastewater produced by a large tannery district in Northern Italy. SBBR performance both without and with ozonation, was assessed with very satisfactory results. In particular, in the latter instance the recorded COD, TKN and TSS average removals, (96%), (92%) and (98%) respectively, allowed the maximum allowable concentration values fixed by the Italian regulation in force to be achieved without any additional polishing step. During the investigation biofilm properties (biofilm concentration and biofilm density) and flow dynamics aspects (head loss, shear stress, bed porosity) were also studied. A major feature of the process is that, with or without ozonation, it was characterised by very low specific sludge production (0.05 kgVSS/kgCODremoved) and high biofilm density (i.e. 87-122 gVSS/Lsludge) both contributing to a rather high biofilm concentration (i.e. 31-44 gTSS/Lfilter).

scholarly journals Performance of Microbial Fuel Cell for Wastewater Treatment and Electricity Generation

2013 ◽  
Vol 2 (2) ◽  
pp. 131-135
Author(s):  
Z Yavari ◽  
H Izanloo ◽  
K Naddafi ◽  
H.R Tashauoei ◽  
M Khazaei
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electricity Generation ◽  
Loading Rate ◽  
Synthetic Wastewater ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Sustainable Operation ◽  
Cell Reactor

Renewable energy will have an important role as a resource of energy in the future. Microbial fuel cell (MFC) is a promising method to obtain electricity from organic matter andwastewater treatment simultaneously. In a pilot study, use of microbial fuel cell for wastewater treatment and electricity generation investigated. The bacteria of ruminant used as inoculums. Synthetic wastewater used at different organic loading rate. Hydraulic retention time was aneffective factor in removal of soluble COD and more than 49% removed. Optimized HRT to achieve the maximum removal efficiency and sustainable operation could be regarded 1.5 and 2.5 hours. Columbic efficiency (CE) affected by organic loading rate (OLR) and by increasing OLR, CE reduced from 71% to 8%. Maximum voltage was 700mV. Since the microbial fuel cell reactor considered as an anaerobic process, it may be an appropriate alternative for wastewater treatment

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