Effect of Wheat Starch Plant Waste on Biological Treatment of Domestic Wastewater

1975 ◽  
Vol 10 (1) ◽  
pp. 164-169
Author(s):  
R.G. Rosehart ◽  
R. Chu ◽  
R. Breeze
Keyword(s):  
Activated Sludge ◽  
Biological Treatment ◽  
Treatment Process ◽  
Domestic Wastewater ◽  
Wheat Starch ◽  
Plant Performance ◽  
Municipal Sewage ◽  
Biological Treatment System ◽  
Biological Treatment Process ◽  
Starch Plant

Abstract An activated sludge pilot plant has been operated on a feed consisting of mixtures of domestic and starch plant wastes. The effects of the industrial waste addition on the performance of the biological treatment system have been monitored. Results indicate that the optimal plant performance is obtained with a 1% (V/V) starch waste addition to domestic sewage. It was observed that the addition of the starch plant effluent improved the efficiency of BOD5 removal and also improved settling characteristics of the activated sludge. A shock loading did not affect the plant performance. The results of the study indicate that it is feasible to combine the treatment of municipal sewage and wheat starch waste in a biological treatment process.

scholarly journals Assessing the performance of a UV/H2O2 process for removing TOC from petroleum refinery wastewater and the respirometric effects of adding UV/H2O2 treated wastewater to activated sludge from the refinery WWTP biological treatment process

2021 ◽  
Author(s):  
Mark Knight
Keyword(s):  
Activated Sludge ◽  
Biological Treatment ◽  
Treatment Process ◽  
Petroleum Refinery ◽  
Molar Ratio ◽  
Refinery Wastewater ◽  
Bench Scale ◽  
Treatment Performance ◽  
Petroleum Refinery Wastewater ◽  
Biological Treatment Process

The treatment of petroleum refinery wastewater was studied using a bench scale ultraviolet/hydrogen peroxide (UV/H2O2) process. The highest treatment performance of the bench scale UV/H2O2 process to reduce the total organic carbon (TOC) from the petroleum refinery wastewater took place at a reaction time of 45 min and a pH of 5.0. A three factor analysis of va riance (ANOVA) analysis verified that the initial H2O2/TOC molar ratio did not have a significant effect on the bench scale UV/H2O2 process treatment performance. The effects of adding UV/H2O2 treated petroleum refinery wastewater to activated sludge microorganisms form the refinery WWTP biological treatment process was studied using respirometry. Overall, the UV/H2O2 treated refinery wastewater inhibited the refinery activated sludge microorganisms. This occurred when the raw refinery wastewater was treated with a UV/H2O2 process for 45 min. with an initial H2O2/TOC molar ratio of 1.7 mol H2O2/mol C, an initial H2O2 concentration of 202 mg H2O2/L and a pH of either 5 or 7.

scholarly journals Assessing the performance of a UV/H2O2 process for removing TOC from petroleum refinery wastewater and the respirometric effects of adding UV/H2O2 treated wastewater to activated sludge from the refinery WWTP biological treatment process

2021 ◽  
Author(s):  
Mark Knight
Keyword(s):  
Activated Sludge ◽  
Biological Treatment ◽  
Treatment Process ◽  
Petroleum Refinery ◽  
Molar Ratio ◽  
Refinery Wastewater ◽  
Bench Scale ◽  
Treatment Performance ◽  
Petroleum Refinery Wastewater ◽  
Biological Treatment Process

The treatment of petroleum refinery wastewater was studied using a bench scale ultraviolet/hydrogen peroxide (UV/H2O2) process. The highest treatment performance of the bench scale UV/H2O2 process to reduce the total organic carbon (TOC) from the petroleum refinery wastewater took place at a reaction time of 45 min and a pH of 5.0. A three factor analysis of va riance (ANOVA) analysis verified that the initial H2O2/TOC molar ratio did not have a significant effect on the bench scale UV/H2O2 process treatment performance. The effects of adding UV/H2O2 treated petroleum refinery wastewater to activated sludge microorganisms form the refinery WWTP biological treatment process was studied using respirometry. Overall, the UV/H2O2 treated refinery wastewater inhibited the refinery activated sludge microorganisms. This occurred when the raw refinery wastewater was treated with a UV/H2O2 process for 45 min. with an initial H2O2/TOC molar ratio of 1.7 mol H2O2/mol C, an initial H2O2 concentration of 202 mg H2O2/L and a pH of either 5 or 7.

Savings with upgraded performance through improved activated sludge denitrification in the combined activated sludge–biofilter system of the Southpest Wastewater Treatment Plant

2008 ◽  
Vol 57 (8) ◽  
pp. 1287-1293 ◽  
Author(s):  
A. Jobbágy ◽  
G. M. Tardy ◽  
Gy. Palkó ◽  
A. Benáková ◽  
O. Krhutková ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Process Efficiency ◽  
Initial Value ◽  
Initial Profile ◽  
Biological Treatment System

The purpose of the experiments was to increase the rate of activated sludge denitrification in the combined biological treatment system of the Southpest Wastewater Treatment Plant in order to gain savings in cost and energy and improve process efficiency. Initial profile measurements revealed excess denitrification capacity of the preclarified wastewater. As a consequence, flow of nitrification filter effluent recirculated to the anoxic activated sludge basins was increased from 23,000 m3 d−1 to 42,288 m3 d−1 at an average preclarified influent flow of 64,843 m3 d−1, Both simulation studies and microbiological investigations suggested that activated sludge nitrification, achieved despite the low SRT (2–3 days), was initiated by the backseeding from the nitrification filters and facilitated by the decreased oxygen demand of the influent organics used for denitrification. With the improved activated sludge denitrification, methanol demand could be decreased to about half of the initial value. With the increased efficiency of the activated sludge pre-denitrification, plant effluent COD levels decreased from 40–70 mg l−1 to < 30–45 mg l−1 due to the decreased likelihood of methanol overdosing in the denitrification filter

Using Two-Phase Anaerobic Digestion for Organic Waste

2014 ◽  
Vol 953-954 ◽  
pp. 300-303 ◽  
Author(s):  
Fang Yin ◽  
Wu Di Zhang ◽  
Jing Liu ◽  
Hong Yang
Keyword(s):  
Anaerobic Digestion ◽  
Biological Treatment ◽  
Organic Waste ◽  
Single Phase ◽  
Treatment Process ◽  
Maximal Activity ◽  
Two Phase ◽  
High Efficient ◽  
Development Direction ◽  
Biological Treatment Process

The essence of the two phase anaerobic biological treatment process is to place acid bacteria and methane-producing bacteria in two reactors respectively, where it can provide the optimal conditions for their growth and metabolism, allowing them to live up to their maximal activity, which greatly improve processing capacity and efficiency compared to a single-phase anaerobic digestion. The paper start with the two phase anaerobic digestion process, in order to discuss the development direction of high efficient anaerobic digestion system.

Evaluation of WWTP with Activated Sludge Technology Combined with Microorganism Biofilters in IMERI Building

2021 ◽  
Vol 3 (01) ◽  
pp. 29-43
Author(s):  
Khalida Hanum
Keyword(s):  
Activated Sludge ◽  
Management System ◽  
Treatment Process ◽  
Secondary Data ◽  
Domestic Wastewater ◽  
Quality Standard ◽  
Wastewater Management ◽  
Recycled Water ◽  
System Planning ◽  
Research And Education

The regulations said that all domestic wastewater first should be treated before being discharged into public drainages. Therefore, IMERI building, as a research and education building located in the Faculty of Medicine, Universitas Indonesia, applies a wastewater management system using activated sludge technology combined with microorganism biofilters. This system is expected to treat the waste generated inside the building. It reprocesses become recycled water and partially discharged into city drainages based on the quality standard and maintenance applied during the operation. By collecting and evaluating primary and secondary data from system planning and routine maintenance results, we assess all performance of the WWTP system. Moreover, this system runs well and has all indicators of effluent categorizes safe. However, routine maintenance and the treatment process with chlorination and tighter monitoring should be taken seriously to keep the whole system's performance.

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