Study on the Treatment of Waste Water Containing High Concentration of Ammonia Nitrogen

2012 ◽  
pp. 1037-1043
Author(s):  
Yunnen Chen ◽  
Lichao Ding ◽  
Jingbiao Fan
Keyword(s):  
Waste Water ◽  
Ammonia Nitrogen ◽  
High Concentration

scholarly journals Removal of Levafix Red from Aqueous Solution with Treated Jute Stick and its Relevance to Pharmaceutical Field

2016 ◽  
Vol 19 (1) ◽  
pp. 75-84
Author(s):  
Rayhan Hossain ◽  
Mohammad Arifur Rahman ◽  
Nargish Jahan Ara ◽  
AM Shafiqul Alam
Keyword(s):  
Waste Water ◽  
Low Cost ◽  
Animal Health ◽  
Oxygen Demand ◽  
Free Water ◽  
Second Order ◽  
Batch Adsorption ◽  
High Concentration ◽  
Pseudo Second Order ◽  
Pharmaceutical Industries

The adsorption of levafix red (LR) dye from waste water via batch adsorption onto treated jute stick powder was investigated. Studies concerning the factors influencing the adsorption such as adsorbent dosage, pH, contact time and temperature were systematically investigated and discussed. The results revealed that the maximum removal of levafix red was ~91% from water. The kinetics data were analyzed using pseudo-first order and pseudo-second order models. It was best described by the pseudo-second order model. The adsorption equilibrium follows Langmuir isotherm. This result indicates that treated jute stick powder could be employed as low-cost alternatives to commercial activated carbon for the removal of levafix red (LR) from waste water. Rapid industrialization in Bangladesh has resulted in increased water pollution that has higher dye level. Waste water from dyeing and finishing factories is a significant source of environmental pollution. The waste water is typically characterized by high levels of COD (chemical oxygen demand) concentration, high concentration of coloring material, large amount of suspended solids, highly fluctuating pH and high temperature. Dyes may therefore present an ecotoxic hazard and introduces the potential danger of bioaccumulation that may eventually affect man by transport through the food chain. As pharmaceutical industries use lots of water and intake of this type of water might have adverse effects on human health. Therefore, water purification is extremely essential for human and animal health and dye free water may be farther purified for its proper use.Bangladesh Pharmaceutical Journal 19(1): 75-84, 2016

scholarly journals Epidemiological risks of endoparasitoses spread by municipal waste water

2015 ◽  
Vol 52 (3) ◽  
pp. 188-194 ◽  
Author(s):  
A. Dudlová ◽  
P. Juriš ◽  
P. Jarčuška ◽  
L. Čisláková ◽  
I. Papajová ◽  
...  
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Developmental Stages ◽  
Wastewater Sludge ◽  
Indirect Detection ◽  
Treated Wastewater ◽  
High Concentration ◽  
Epidemiological Aspect ◽  
Helminth Eggs

AbstractThe occurrence of developmental stages of endoparasite germs (cysts, oocysts, protozoa, and helminth eggs) as an indirect detection factor of endoparasitoses circulation in the environment, was examined in raw municipal wastewater, sludge and biologically cleaned waste water. Examination of municipal wastewater and sludge from five monitored wastewater treatment plants (WWTPs) in east Slovakia, from various fractions of municipal wastewater, confirmed 35.87 % positivity of samples for the endoparasitic germs. Among of all analysed samples 11.09 % were protozoan oo(cysts) and 20.87 % were helminth eggs. 3.91 % of samples showed positivity to both the helminth eggs and protozoan oo(cysts). In the raw wastewater the protozoa comprised of Giardia spp. (1.08 %) and Entamoeba spp. (1.08 %). The helminth eggs primarily consisted of Ascaris spp. (4.35 %) and strongyle-type eggs (3.26 %). No germs of protozoa or helminths were found in the treated wastewater. However, the highest presence of the germs was found in drained stabilised sludge. The average number of oo(cysts)/kg was 2.86±0.24 and the average number of helminth eggs/kg was 5.77±0.09. In all kinds of sludge, obtained during the process of wastewater treatment, there were protozoan (Giardia spp., Cryptosporidium spp., Entamoeba spp.) and helminths eggs (Ascaris spp., Trichuris spp., Taenia spp., Hymenolepis spp., or strongyle-type eggs) presented. In drained (condensed) stabilised sludge the eggs of Capillaria spp. and Toxocara spp. were also detected. From the epidemiological aspect the sewage sludge, due to high concentration of protozoal oo(cysts) or helminth eggs, represents a significant epidemiological risk for the endoparasitoses dissemination.

Research on Technology of Wastewater Treatment from Scheelite Flotation

2013 ◽  
Vol 645 ◽  
pp. 121-124 ◽  
Author(s):  
Jing Xin Wang ◽  
Guo Wei He ◽  
Bin Fan ◽  
Jian Qiang Xiao
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Sulfuric Acid ◽  
Theoretical Basis ◽  
Suspended Solids ◽  
High Concentration ◽  
Flotation Process ◽  
Mine Wastewater ◽  
Suspended Substance ◽  
Wastewater Recycling

Wastewater from scheelite flotation tailings slathered a lot of sodium silicate in the flotation process, a large number of silicate minerals residues remain in the wastewater, forming suspension bodies difficult to be naturally subsided. With high concentration of suspended substance and pH of 11 or more, this kind of wastewater belongs to unmanageable mine wastewater. Research shows that, pretreating the waste water with Sulfuric acid and calcium chloride, adjusting pH to 7-8 and adding polyacrylamide on flocculating-sedimentation combined can remove suspended solids effectively, offering theoretical basis for wastewater recycling and disposing mine wastewater, which is of great importance.

High-Concentration Nitrogen Removal by Anaerobic Ammonium Oxidation Process

2012 ◽  
Vol 518-523 ◽  
pp. 214-217
Author(s):  
Tao Hong Liao ◽  
Kang Huai Liu ◽  
Jia Chun Yang ◽  
Kenji Furukawa
Keyword(s):  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Removal Rate ◽  
Nitrogen Concentration ◽  
Ammonia Nitrogen ◽  
Ammonium Oxidation ◽  
High Concentration ◽  
Total Nitrogen Concentration ◽  
Load Rate ◽  
Nitrogen Load Rate

This experiment aimed to explore the effect of high- concentration nitrogen removal by Anaerobic ammonium oxidation process. The mixed liquor suspended solid(MLSS)was 510 mg/L. In the beginning of the experiment, the inflow concentration rate of ammonia nitrogen and nitrite nitrogen was about 1:1.3 and the total nitrogen concentration was low. When the reactor reached the ideal treatment effect then gradually increased the total nitrogen concentration, until reaching the maximum nitrogen load rate(NLR) of the reactor. In the temperature of 34.4 °C, PH was 7.23, the inflow concentration of ammonia nitrogen was 223.3 mg. N/L, the inflow concentration nitrite nitrogen was 289.7 mg. N/L, the dissolved oxygen (DO) was 2.3 mg. N/L, the nitrogen load rate (NLR) was 6.08 kg. N / (m3. d), the nitrogen removal rate (NRR) was 5.60 kg. N / (m3. d), the total nitrogen (TN) removal rate was 92.2%, under this conditions, the reactor achieved the best effect.

Function of Microorganism and Efficiency on Livestock Wastewater Treatment by Constructed Rapid Infiltration System

2011 ◽  
Vol 233-235 ◽  
pp. 728-732
Author(s):  
Yan Juan Liu ◽  
Ming Zhu ◽  
Ya Wen Yang ◽  
Ai Bin Kang
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Ammonia Nitrogen ◽  
High Concentration ◽  
Livestock Wastewater ◽  
Hydraulic Loading ◽  
Maximum Removal

Taking high concentration livestock wastewater as research object, The results showed that the constructed rapid infiltration system operated at the largest hydraulic loading of 0.26m/d, and during the period of the flooding for ond day and drying for two days, the main efficiency of pollutants occurred in filter height of 0.65m, with the maximum removal efficiency of COD and ammonia nitrogen as 80%; TF and MLVSS also reached maximum.

scholarly journals Organic waste removal from pharmaceutical and textile effluents using composite adsorbent

2020 ◽  
Vol 55 (3) ◽  
pp. 197-206
Author(s):  
M Khatun ◽  
G Mohammad ◽  
Mir T Rahman ◽  
SE Kabir
Keyword(s):  
Waste Water ◽  
High Performance ◽  
Organic Waste ◽  
Water Systems ◽  
High Concentration ◽  
Total Peak Area ◽  
Composite Adsorbent ◽  
Similar Chemical ◽  
Uv Visible ◽  
Textile Industries

Pharmaceutical and textile industries widely use inorganic and organic components which undergo different chemical and biochemical reactions with the ground water systems. The removal of organic wastes from effluents was carried out using a composite adsorbent. Four different samples were collected from the Gonoshasthaya Antibiotic Limted, Gonoshasthaya Pharmaceuticals Limited, Pakiza Dyeing and Printing Industries Limited and Bangladesh Dyeing and Finishing Industries Limited. Synthetic effluents of four types were prepared maintaining a similar chemical average of the collected samples. All the samples contained a high concentration of TDS, TSS, TS, COD and BOD5. The composite adsorbent performed excellently for all the samples. The concentrations of the components contained in the waste water were analyzed by UV-Visible spectrophotometer and High Performance Liquid Chromatography (HPLC). After the treatment, the decreasing trend of the absorbance and total peak area indicated that the significant amount of effluent materials were removed. Bangladesh J. Sci. Ind. Res.55(3), 197-206, 2020

scholarly journals Effect of polyphenols on activated sludge biomass during the treatment of highly diluted olive mill wastewaters: biomass dynamics and purifying performances

2020 ◽  
Vol 82 (7) ◽  
pp. 1416-1429
Author(s):  
T. E. Elmansour ◽  
L. Mandi ◽  
A. Ahmali ◽  
A. Elghadraoui ◽  
F. Aziz ◽  
...  
Keyword(s):  
Waste Water ◽  
Activated Sludge ◽  
Klebsiella Oxytoca ◽  
Settling Tank ◽  
Oxygen Demand ◽  
Volume Index ◽  
High Concentration ◽  
Olive Mill Waste Water ◽  
Rhizopus Sp ◽  
Olive Mill

Abstract This study aims to investigate the feasibility of treating olive mill waste water (OMWW) by activated sludge pilot (AS) after its high dilution (1%) by urban waste water (UWW) and to study the effect of polyphenol compounds on the biomass during the treatment. Specific oxygen uptake rate (SOUR), mixed liquor volatile suspended solids (MLVSS), chemical oxygen demand (COD) and total polyphenols, were followed up over 100 days. In spite of the polyphenols' high concentration (up to 128 mg·L−1), successful biomass growth of 7.12 g MLVSS.L −1 and activity were achieved. Most of the bacteria (Pseudomonas sp., Klebsiella oxytoca, Citrobacter fereundii, Escherichia coli and Staphylococcus sp.) and fungi (Trichoderma sp., Rhizopus sp., Aspergillus niger, Penicillium sp., Fusarium sp., Alternaria) identified in the aerobic basin during the stabilization stage were known to be resistant to OMWW and showed effective adaptation of the biomass to polyphenols in high concentration. COD and polyphenols were highly eliminated (90%, 92% respectively). The sludge volume index in the pilot settling tank was almost constant at around 120 mL.g −1. This suggests the possibility of managing OMWW by simple injection at a given percentage in already functioning conventional AS treating UWW.

Performance characterization of anaerobic sequencing batch reactor process for digestion of night soil

2001 ◽  
Vol 43 (1) ◽  
pp. 27-34 ◽  
Author(s):  
J. G. Lee ◽  
J. M. Hur ◽  
D. Chang ◽  
T. H. Chung
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Ammonia Nitrogen ◽  
Gas Production ◽  
High Concentration ◽  
Anaerobic Sequencing Batch Reactor ◽  
Mixed Control ◽  
Volatile Solids ◽  
Equivalent Loading

Laboratory experiments were conducted to investigate the performance of an anaerobic sequencing batch reactor (ASBR) process for night soil treatment. Performances of the reactors were evaluated at an equivalent hydraulic retention time (HRT) of 10 days with an equivalent loading rate of 2.6 kgVS/m3/d (3.1 kgCOD/m3/day) at 35°C. Digestion of a night soil was possible using the ASBR at an HRT of 10 days in spite of high concentration of ammonia nitrogen and settleable solids. Solids were accumulated rapidly in the ASBRs, and their concentrations were 2.3∼2.4 times higher than that in a completely mixed control reactor. Remarkable increases in gas production were observed in the ASBRs compared with the control reactor. Average increases in equivalent daily gas production from the ASBRs were 205∼220% compared with that from the control run. The ASBR with reaction period/thickening period ratio (R/T ratio) of 1 showed a little higher gas production and organic removal efficiency than that with R/T ratio of 3. Volatile solids removals based on supernatant of the ASBRs were 12∼14% higher than that of the control reactor. Thus, the ASBR was a stable and effective process for the treatment of night soil having high concentration of settleable organics and ammonia nitrogen.

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