A sensing network involving citizens for high spatio-temporal resolution monitoring of fugitive emissions from a petroleum pre-treatment plant

To guarantee a good water quality at the consumer’s tap, natural organic matter (NOM) should be (partly) removed during drinking water treatment. The objective of this research is to measure the effect of NOM removal by ion exchange on the biological stability of drinking water. Experiments were performed in two lanes of the pilot plant of Weesperkarspel in the Netherlands. The lanes consisted of ozonation, softening, biological activated carbon filtration and slow sand filtration. Ion exchange in fluidized form was used as pre-treatment in one lane and removed 50% of the dissolved organic carbon (DOC); the other lane was used as reference. Compared to the reference lane, the assimilable organic carbon (AOC) concentration of the finished water in the lane pretreated by ion exchange was 61% lower. The biofilm formation rate of the finished water was decreased with 70% to 2.0 pg ATP/cm2.day. The achieved concentration of AOC and the values of the biofilm formation rate with ion exchange pre-treatment showed that the biological stability of drinking water can be improved by extending a treatment plant with ion exchange, especially when ozonation is involved as disinfection and oxidation step.

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Reuse of Wastewaters in Agriculture by Means of Sprinkler Irrigation on a Farmland Area of 3000 ha – Large Scale Experience in Germany

Water Science & Technology ◽

10.2166/wst.1986.0088 ◽

1986 ◽

Vol 18 (9) ◽

pp. 163-173

Author(s):

R. Boll ◽

R. Kayser

Keyword(s):

Large Scale ◽

Treatment Process ◽

Treatment Plant ◽

Sprinkler Irrigation ◽

Paper Briefly ◽

Treatment Results ◽

Sewage Farm ◽

Western Germany ◽

Pre Treatment ◽

Main Components

The Braunschweig wastewater land treatment system as the largest in Western Germany serves a population of about 270.000 and has an annual flow of around 22 Mio m3. The whole treatment process consists of three main components : a pre-treatment plant as an activated sludge process, a sprinkler irrigation area of 3.000 ha of farmland and an old sewage farm of 200 ha with surface flooding. This paper briefly summarizes the experiences with management and operation of the system, the treatment results with reference to environmental impact, development of agriculture and some financial aspects.

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Use of lime for the upgrading of existing wastewater treatment systems

Water Science & Technology ◽

10.2166/wst.1994.0626 ◽

1994 ◽

Vol 29 (12) ◽

pp. 279-282 ◽

Cited By ~ 2

Author(s):

C. Güldner ◽

W. Hegemann ◽

N. Peschen ◽

K. Sölter

Keyword(s):

Large Scale ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Chemical Precipitation ◽

Fatty Acid Production ◽

German States ◽

Lime Solution ◽

First Results ◽

Pre Treatment

The integration of the chemical precipitation unit which would inject a lime solution into a series of mechanical-biological processes, including nitrification/denitrification, and the sludge treatment are the subject of this project. The essential target is the large-scale reconstruction of a mechanical-biological sewage treatment plant with insufficient cleaning performance in the new German states and the adjustment of the precipitation stage to the unsteady inflow of sewage. First results indicate that the pre-treatment performance could be improved by ≅ 20% and the discharge of concentrations of COD, BOD, N and P could be reduced and homogenized. In addition, experiments on hydrolysis and acidifiability of the pre-treatment sludge have been carried out on a laboratory level with the object of making sources of carbon readily available for denitrification. In the course of the experiment, inhibition of fatty acid production by calcareous primary sludge could not be detected. The characteristics of the sludge, such as draining and thickening were considerably improved by the adding of lime.

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A Centralized Hazardous Waste Treatment Plant: The Facilities of the Zvsmm at Schwabach as an Example

Water Science & Technology ◽

10.2166/wst.1994.0416 ◽

1994 ◽

Vol 29 (8) ◽

pp. 235-250 ◽

Cited By ~ 2

Author(s):

Norbert Amsoneit

Keyword(s):

Hazardous Waste ◽

Waste Treatment ◽

Treatment Plant ◽

Waste Incinerator ◽

Physical Plant ◽

Treatment Centre ◽

Hazardous Waste Treatment ◽

Waste Treatment Plant ◽

Pre Treatment ◽

Inorganic Waste

As a rule, hazardous waste needs a pre-treatment, either a thermal or a chemical-physical one, before it can be disposed of at a landfill. The concentration of different kinds of treatment facilities at a Centralized Hazardous Waste Treatment Plant is advantageous. The facility of the ZVSMM at Schwabach is presented as an outstanding example of this kind of Treatment Centre. The infrastructure, the chemical-physical plant with separate lines for the treatment of organic and inorganic waste and the hazardous waste incinerator are described. Their functions are discussed in detail. Emphasis is laid on handling the residues produced by the different treatment processes and the final disposal.

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Performance of hybrid small wastewater treatment system consisting of jet mixed separator and rotating biological contactor

Water Science & Technology ◽

10.2166/wst.1997.0244 ◽

1997 ◽

Vol 35 (6) ◽

pp. 63-70 ◽

Cited By ~ 3

Author(s):

Yoshimasa Watanabe ◽

Yoshihiko Iwasaki

Keyword(s):

Wastewater Treatment ◽

Electric Power ◽

Hybrid System ◽

Municipal Wastewater ◽

Treatment Plant ◽

Treatment System ◽

Municipal Wastewater Treatment ◽

Wastewater Treatment System ◽

Pre Treatment ◽

Organic Particles

This paper describes a pilot plant study on the performance of a hybrid small municipal wastewater treatment system consisting of a jet mixed separator(JMS) and upgraded RBC. The JMS was used as a pre-treatment of the RBC instead of the primary clarifier. The treatment capacity of the system was fixed at 100 m3/d, corresponding to the hydraulic loading to the RBC of 117 L/m2/d. The effluent from the grid chamber at a municipal wastewater treatment plant was fed into the hybrid system. The RBC was operated using the electric power produced by a solar electric generation panel with a surface area of 8 m2 under enough sunlight. In order to reduce the organic loading to the RBC, polyaluminium chloride(PAC) was added to the JMS influent to remove the colloidal and suspended organic particles. At the operational condition where the A1 dosage and hydraulic retention time of the JMS were fixed at 5 g/m3 and 45 min., respectively, the average effluent water quality of hybrid system was as follows: TOC=8 g/m3, Total BOD=8 g/m3, SS=8 g/m3, Turbidity=6 TU, NH4-N=7 g/m3, T-P=0.5 g/m3. In this operating condition, electric power consumption of the RBC for treating unit volume of wastewater is only 0.07 KWH/m3.

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Spatio-Temporal Resolution Enhancement for Geostationary Microwave Data

2020 16th Specialist Meeting on Microwave Radiometry and Remote Sensing for the Environment (MicroRad) ◽

10.1109/microrad49612.2020.9342539 ◽

2020 ◽

Author(s):

Igor Yanovsky ◽

Jing Qin ◽

Bjorn Lambrigtsen

Keyword(s):

Temporal Resolution ◽

Resolution Enhancement ◽

Spatio Temporal ◽

Microwave Data

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A data reduction and compression description for high throughput time-resolved electron microscopy

Nature Communications ◽

10.1038/s41467-020-20694-z ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Abhik Datta ◽

Kian Fong Ng ◽

Deepan Balakrishnan ◽

Melissa Ding ◽

See Wee Chee ◽

...

Keyword(s):

Electron Microscopy ◽

Temporal Resolution ◽

Data Reduction ◽

Accurate Estimation ◽

Data Streaming ◽

Compression Scheme ◽

Raw Data ◽

Time Resolved ◽

Detection And Counting ◽

Spatio Temporal

AbstractFast, direct electron detectors have significantly improved the spatio-temporal resolution of electron microscopy movies. Preserving both spatial and temporal resolution in extended observations, however, requires storing prohibitively large amounts of data. Here, we describe an efficient and flexible data reduction and compression scheme (ReCoDe) that retains both spatial and temporal resolution by preserving individual electron events. Running ReCoDe on a workstation we demonstrate on-the-fly reduction and compression of raw data streaming off a detector at 3 GB/s, for hours of uninterrupted data collection. The output was 100-fold smaller than the raw data and saved directly onto network-attached storage drives over a 10 GbE connection. We discuss calibration techniques that support electron detection and counting (e.g., estimate electron backscattering rates, false positive rates, and data compressibility), and novel data analysis methods enabled by ReCoDe (e.g., recalibration of data post acquisition, and accurate estimation of coincidence loss).

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