Detection status and removal characteristics of pharmaceuticals in wastewater treatment effluent

2019 ◽  
Vol 31 ◽  
pp. 100828 ◽  
Author(s):  
Shun-Hwa Lee ◽  
Ki-Hae Kim ◽  
Miran Lee ◽  
Byung-Dae Lee
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Effluent

Experiments on high rate effluent filtration in the Netherlands

1998 ◽  
Vol 38 (3) ◽  
pp. 127-134
Author(s):  
Jaap H. J. M. van der Graaf ◽  
Arjen F. van Nieuwenhuijzen
Keyword(s):  
Wastewater Treatment ◽  
The Netherlands ◽  
Suspended Solids ◽  
Practical Experience ◽  
High Rate ◽  
Treated Water ◽  
Low Concentrations ◽  
Wastewater Treatment Effluent

As yet, filtration of wastewater treatment effluent has not been practised in the Netherlands. The main objections were the expected high costs. In order to gain practical experience an investigation programme studied the applicability and optimization of effluent filtration. Especially multi-layer filtration with the addition of ironchloride seemed to be very effective. Very low concentrations of suspended solids and phosphorus were achieved, even at high filtration rates (up to 30 m/h). This leads to an impressive reduction of expected costs, down to Dfl. 0.02/m3 (treated water).

scholarly journals Detection and Treatment Methods for Perfluorinated Compounds in Wastewater Treatment Plants

2019 ◽  
Vol 9 (12) ◽  
pp. 2500 ◽  
Author(s):  
Shun-hwa Lee ◽  
Yeon-jung Cho ◽  
Miran Lee ◽  
Byung-Dae Lee
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Wastewater Treatment Plants ◽  
Treatment Method ◽  
Pilot Test ◽  
Activated Carbon Adsorption ◽  
Operating Rate ◽  
Adsorption Processes ◽  
Wastewater Treatment Effluent ◽  
Urban Wastewater Treatment

We surveyed the variation in perfluorinated compound (PFC) concentrations entering urban wastewater treatment plants and then designed an optimal PFCs treatment method based on a pilot test. The PFCs influent concentration was found to be affected by the types of industries and operating rate. The concentration of PFCs in the wastewater treatment effluent was slightly lower than that of the influent. Thus, PFCs had not been adequately removed by the existing biological treatments. The pilot test results showed that about 10% of PFCs was removed by coagulation and precipitation, and the ozone and chlorine test showed that few, if any, PFCs were removed regardless of the oxidant dose. The activated carbon adsorption test showed that the removal significantly increased with empty bed contact time, with about a 60% removal in five minutes and over 90% removal in over 15 minutes. Therefore, a more stable and higher PFCs removal would result from continuous oxidation processes, such as ozone and adsorption processes involving activated carbon, rather than a single biological treatment.

scholarly journals Decentralised wastewater treatment effluent fertigation: preliminary technical assessment

Water SA ◽  
2018 ◽  
Vol 44 (2 April) ◽  
Author(s):  
W Musazura ◽  
AO Odindo ◽  
EH Tesfamariam ◽  
JC Hughes ◽  
CA Buckley
Keyword(s):  
Wastewater Treatment ◽  
Agricultural Land ◽  
Irrigation System ◽  
Tap Water ◽  
Block Design ◽  
Phosphorus Uptake ◽  
Chemical Properties ◽  
Nitrogen And Phosphorus ◽  
Wastewater Treatment Effluent ◽  
Nitrogen And Phosphorus Uptake

The Decentralised Wastewater Treatment System (DEWATS) can provide a potential sanitation solution to residents living in informal settlements with the effluent produced being used on agricultural land. This paper reports on a first step to assess the technical viability of this concept. To do so a pilot DEWATS plant was connected to 83 houses in the eThekwini Municipality. An experiment was conducted in a randomised complete block design with 2 treatments (DEWATS effluent irrigation and tap water irrigation + fertiliser) and 3 blocks. Banana and taro crops were irrigated using an automated drip irrigation system. Data on the weather, crop growth, nitrogen and phosphorus uptake and soil chemical properties were collected. Irrigation with DEWATS effluent was comparable to tap water + fertiliser especially for banana growth and biomass production. Banana and taro required 3 514 mm of irrigation effluent. About 0.0117 ha·household−1 (23.3 m2·person−1) was found to be an adequate area for effluent reuse. Wet-weather storage requirements were calculated to be about 9.2 m3·household−1. DEWATS effluent, after passing through a horizontal flow wetland, was unable to meet banana and taro nitrogen and phosphorus requirements. Nutrient monitoring is required when using anaerobic filter effluent from a DEWATS for irrigating banana and taro. 

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