Turbidity Monitoring Articles

433 Results found
  • Category: Monitoring & Testing ×

  • Subcategory: Turbidity Monitoring ×

Analysis of nitrogenous and algal oxygen demand in effluent from a system of aerated lagoons followed by polishing pond

by IWA Publishing  (Jul. 16, 2014)

In this descriptive-analytical study, nitrogenous and algal oxygen demand were assessed for effluent from a system of facultative partially mixed lagoons followed by the polishing pond using 120 grab samples over 1 year. Filtered and non-filtered samples of polishing pond effluent were tested in the presence and absence of a nitrification ...

Pilot trial study of a compact macro-filtration membrane bioreactor process for saline wastewater treatment

by IWA Publishing  (Jul. 16, 2014)

Conventional membrane bioreactor (MBR) systems have increasingly been studied in recent decades. However, their applications have been limited due to their drawbacks such as low flux, membrane fouling, and high operating cost. In this study, a compact macro-filtration MBR (MfMBR) process was developed by using a large pore size membrane to ...

Sludge accumulation in shallow maturation ponds treating UASB reactor effluent: results after 11 years of operation

by IWA Publishing  (Jul. 23, 2014)

Polishing ponds are natural systems used for the post-treatment of upflow anaerobic sludge blanket (UASB) effluents. They are designed as maturation ponds and their main goal is the removal of pathogens and nitrogen and an additional removal of residual organic matter from the UASB reactor. This study aimed to evaluate organic matter and ...

Operation of an integrated algae pond system for the treatment of municipal sewage: a South African case study

by IWA Publishing  (Jun. 25, 2014)

Integrated algae pond systems (IAPS) combine the use of anaerobic and aerobic bioprocesses to effect sewage treatment. In the present work, the performance of IAPS was evaluated to determine the efficiency of this technology for treatment of municipal sewage under South African conditions. Composite samples were analysed over an 8 month period ...

GWT Case Study - Produced Water - Oil/Gas Industry

by Genesis Water Technologies, Inc  (May 23, 2014)

GWT Case Study - Produced Water  Treatment/Reuse - Oil/Gas Industry Challenge A large oil processing company wanted to reuse their produced water from several oil wells applications. The water contained hydrocarbons, sulfate, TSS, BOD/COD, dissolved salts and high levels of iron ...

Occurrence of Microthrix parvicella in sequencing batch reactors

by IWA Publishing  (May 20, 2014)

Sequencing batch reactors (SBRs) are known for high process stability and usually have a good sludge volume index (SVI). Nevertheless, in many SBRs in Germany for municipal wastewater treatment, scum and foam problems can occur, and SVI can be larger than 200 mL/g. The microscopic investigations of the activated sludge from plants with nitrogen ...

Optimal design activated sludge process by means of multi-objective optimization: case study in Benchmark Simulation Model 1 (BSM1)

by IWA Publishing  (May 20, 2014)

Optimal design of activated sludge process (ASP) using multi-objective optimization was studied, and a benchmark process in Benchmark Simulation Model 1 (BSM1) was taken as a target process. The objectives of the study were to achieve four indexes of percentage of effluent violation (PEV), overall cost index (OCI), total volume and total ...

Performance evaluation and a sizing method for hydrodynamic separators treating urban stormwater runoff

by IWA Publishing  (May 20, 2014)

This study reports on 6 years of performance monitoring of stormwater hydrodynamic separators in Korean urban catchments. One hundred and thirty-seven storm events were monitored in four hydrodynamic separators of two different types from 2006 to 2012. Mean values of the event average removal efficiencies of total suspended solids (TSS) for the ...

Pollutant removal and membrane fouling in an anaerobic submerged membrane bioreactor for real sewage treatment

by IWA Publishing  (Apr. 24, 2014)

Real sewage was continuously treated by a laboratory-scale anaerobic submerged membrane bioreactor (AnSMBR) for over 160 days. Results showed that around 90% of chemical oxygen demand, and 99% of turbidity and total suspended solids in the sewage could be removed by the AnSMBR system. Membrane flux sustained at 11 L/(m2 h) was ...

Dynamics of pollutant discharge in combined sewer systems during rain events: chance or determinism?

by IWA Publishing  (Apr. 24, 2014)

A large database of continuous flow and turbidity measurements cumulating data on hundreds of rain events and dry weather days from two sites in Paris (called Quais and Clichy) and one in Lyon (called Ecully) is presented. This database is used to characterize and compare the behaviour of the three sites at the inter-events scale. The analysis is ...

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