Development of a prototype for the treatment of ater contaminated with glyphosate

One of the current challenges is to meet the demands for quality water since the contamination of bodies of water has been intensified in the last years with the increase in the use of pesticides. Therefore, finding a way to remove contamination by pesticides from water becomes a relevant work. In this study, it was presented the design and construction of a pilot-scale batch reactor prototype in order to remove the herbicide glyphosate from artificially contaminated water using a graphene hybrid composite with manganese ferrite, MnFe2O4-G, as an adsorbent. For the reactor design, it was initially required to know the steps necessary for the removal of the glyphosate from water, according to the chosen hybrid compound for the removal. After the steps were determinated, the components were selected to compose the treatment system. The layout of the prototype was defined and the positions of the elements and materials were chosen. Finally, the prototype was built and tested in the laboratory. The results showed that within 15 minutes the separation was completed and 70% of the adsorbent was recovered in the magnetic separator after 4 complete cycles of treatment. It was concluded that the prototype built fulfills the objective for which it was proposed, presenting the advantage of having all the steps of adsorption and desorption for glyphosate decontamination in the same equipment, being able to be expanded for use in effluent treatment plants.

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REMOÇÃO DE MATÉRIA ORGÂNICA E NITROGÊNIO EM REATOR HÍBRIDO ANAERÓBIO/AERÓBIO/ANÓXICO OPERADO EM BATELADAS SEQUENCIAIS

Revista Eletrônica de Gestão e Tecnologias Ambientais ◽

10.9771/gesta.v8i2.36947 ◽

2020 ◽

Vol 8 (2) ◽

pp. 1

Author(s):

Nelia Henriques Callado ◽

Heitor Carvalho de Almeida Chagas ◽

Marcia Helena Rissato Zamariolli Damianovic

Keyword(s):

Organic Matter ◽

Batch Reactor ◽

Effluent Treatment ◽

Hybrid Reactor ◽

Attractive Alternative ◽

Urban Drainage ◽

Environmental Standards ◽

Adverse Health Effects ◽

Decentralized Treatment ◽

Bodies Of Water

O crescimento urbano, sem o acompanhamento de sistema de esgotamento sanitário, induz a uma tendência de descentralização de estações de tratamento de efluentes (ETEs), visando à remoção não só de matéria orgânica carbonácea, mas também a remoção/recuperação de nutrientes. O nitrogênio, além de causar problemas de eutrofização em corpos de água, pode levar à contaminação de águas superficiais e subterrâneas por nitrato, cuja ingestão está associada a efeitos adversos à saúde. Este trabalho apresenta e discute o desempenho de um Reator em Bateladas Sequenciais (RSB), tratando esgoto sanitário, em escala de bancada, operando com ciclos de 24 horas, a fim de remover matéria orgânica e nitrogênio, tendo a fase de reação submetida a períodos anaeróbio, aeróbio e anóxico, com o intuito de avaliar o potencial de incorporação desta tecnologia como opção no tratamento descentralizado de esgotos em empreendimentos residenciais e comerciais. Os resultados mostraram um rápido estabelecimento de eficiência conjunta de remoção de DQO de 70% e de nitrogênio de 42%, mesmo sem utilizar fonte externa de carbono. Conclui-se que o RSB se apresenta como uma alternativa atraente para aplicação no meio urbano, minimizando os impactos de lançamento dos esgotos no solo, nos sistemas urbanos de drenagem, em corpos de água, bem como atende os padrões ambientais de lançamento. REMOVAL OF ORGANIC MATTER AND NITROGEN IN ANAEROBIC/ANOXIC HYBRID REACTOR OPERATED ON SEQUENTIAL BATCHESUrban growth without the accompaniment of a sewage system leads to a trend towards decentralization of effluent treatment stations (ETEs), aiming at the removal not only of carbonaceous organic matter, but also the removal / recovery of nutrients. Nitrogen, in addition to causing eutrophication problems in bodies of water, can lead to contamination of surface and groundwater by nitrate, the intake of which is associated with adverse health effects. This work presents and discusses the performance of a Sequential Batch Reactor (RSB), treating sanitary sewage, on a bench scale operating with 24-hour cycles, aiming at the removal of organic matter and nitrogen, with the reaction phase submitted to anaerobic periods, aerobic and anoxic, in order to evaluate the potential of incorporating this technology as an option in the decentralized treatment of sewage in residential and commercial enterprises. The results showed a rapid establishment of joint efficiency in removing COD of 70% and nitrogen of 42%, even without using an external carbon source. It is concluded that the RSB presents itself as an attractive alternative for application in the urban environment, minimizing the impacts of the discharge of sewers in the soil, in the urban drainage systems, in bodies of water and meeting the environmental standards of release.

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Degradation of Oil by Land Disposal

Water Science & Technology ◽

10.2166/wst.1987.0048 ◽

1987 ◽

Vol 19 (8) ◽

pp. 99-105 ◽

Cited By ~ 3

Author(s):

G. Tesan ◽

D. Barbosa

Keyword(s):

Nutrient Availability ◽

Filter Cake ◽

Test Procedure ◽

Pilot Scale ◽

Effluent Treatment ◽

Biological Degradation ◽

Chemical Fertilizers ◽

Land Disposal ◽

Micro Organisms

The work presented consists of a test procedure applied at a pilot scale using soil as a biological degradation agent. The experiments described were carried out with oily residues considered as wastes difficult to degrade by other means. The tests were applied to filter cake with activated clay containing 40% oil and oily residues from re-refining of lubricants to give white oils and vaseline. The effect of the amount of moisture is evaluated using a mechanical stirrer to improve the interaction between the wastes and microorganisms. The following are also evaluated: nutrient availability; incorporation of micro-organisms into the soil; introduction of chemical fertilizers; and, injections of sludge from effluent treatment plants.

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Anaerobic sequencing batch reactor in pilot scale for treatment of tofu industry wastewater

10.1063/1.4938380 ◽

2015 ◽

Author(s):

Suparni Setyowati Rahayu ◽

Purwanto ◽

Budiyono

Keyword(s):

Sequencing Batch Reactor ◽

Batch Reactor ◽

Pilot Scale ◽

Anaerobic Sequencing Batch Reactor ◽

Industry Wastewater

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On-Line Adaptive and Nonlinear Process Monitoring of a Pilot-Scale Sequencing Batch Reactor

Environmental Monitoring and Assessment ◽

10.1007/s10661-005-9030-7 ◽

2006 ◽

Vol 119 (1-3) ◽

pp. 349-366 ◽

Cited By ~ 7

Author(s):

Chang Kyoo Yoo ◽

In-Beum Lee ◽

Peter A. Vanrolleghem

Keyword(s):

Process Monitoring ◽

Sequencing Batch Reactor ◽

Batch Reactor ◽

Nonlinear Process ◽

Pilot Scale ◽

Nonlinear Process Monitoring ◽

On Line

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Post-treatment of tannery wastewater using pilot scale horizontal subsurface flow constructed wetlands (polishing)

Water Science & Technology ◽

10.2166/wst.2017.613 ◽

2017 ◽

Vol 77 (4) ◽

pp. 988-998 ◽

Cited By ~ 2

Author(s):

Tadesse Alemu ◽

Andualem Mekonnen ◽

Seyoum Leta

Keyword(s):

Removal Efficiency ◽

Batch Reactor ◽

Subsurface Flow ◽

Oxygen Demand ◽

Pilot Scale ◽

Surface Flow ◽

Tannery Wastewater ◽

Treated Effluent ◽

Horizontal Subsurface Flow ◽

Pollutants Removal

Abstract In the present study, a pilot scale horizontal subsurface flow constructed wetland (CW) system planted with Phragmites karka; longitudinal profile was studied. The wetland was fed with tannery wastewater, pretreated in a two-stage anaerobic digester followed by a sequence batch reactor. Samples from each CW were taken and analyzed using standard methods. The removal efficiency of the CW system in terms of biological oxygen demand (BOD), chemical oxygen demand (COD), Cr and total coliforms were 91.3%, 90%, 97.3% and 99%, respectively. The removal efficiency for TN, NO3− and NH4+-N were 77.7%, 66.3% and 67.7%, respectively. Similarly, the removal efficiency of SO42−, S2− and total suspended solids (TSS) were 71.8%, 88.7% and 81.2%, respectively. The concentration of COD, BOD, TN, NO3−N, NH4+-N, SO42 and S2− in the final treated effluent were 113.2 ± 52, 56 ± 18, 49.3 ± 13, 22.75 ± 20, 17.1 ± 6.75, 88 ± 120 and 0.4 ± 0.44 mg/L, respectively. Pollutants removal was decreased in the first 12 m and increased along the CW cells. P. karka development in the first cell of CW was poor, small in size and experiencing chlorosis, but clogging was higher in this area due to high organic matter settling, causing a partial surface flow. The performance of the pilot CW as a tertiary treatment showed that the effluent meets the permissible discharge standards.

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Removal of sulfur and mineral matter from coal slurry by a pilot scale wet magnetic separator

Developments in Mineral Processing - Oral Session, Proceedings of the XXI International Mineral Processing Congress ◽

10.1016/s0167-4528(00)80054-x ◽

2000 ◽

pp. C7-15-C7-21 ◽

Cited By ~ 1

Author(s):

H. Dinçer ◽

G. Ateşok ◽

M.Z. Doğan ◽

Ş Girgin ◽

F. Boylu ◽

...

Keyword(s):

Pilot Scale ◽

Mineral Matter ◽

Coal Slurry ◽

Magnetic Separator

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Performance assessment of pilot horizontal sub-surface flow constructed wetlands for removal of diesel from wastewater by Scirpus grossus

Water Science & Technology ◽

10.2166/wst.2013.484 ◽

2013 ◽

Vol 68 (10) ◽

pp. 2271-2278 ◽

Cited By ~ 8

Author(s):

Israa Abdulwahab Al-Baldawi ◽

Siti Rozaimah Sheikh Abdullah ◽

Nurina Anuar ◽

Fatihah Suja ◽

Mushrifah Idris

Keyword(s):

Constructed Wetlands ◽

Suspended Solids ◽

Flow System ◽

Oxygen Demand ◽

Pilot Scale ◽

Surface Flow ◽

Total Petroleum Hydrocarbon ◽

Physical Parameters ◽

Contaminated Water ◽

Development Technology

One of the appropriate development technology options for the treatment of wastewater contaminated with diesel is constructed wetlands (CWs). Throughout 72 days of exposure, sampling was carried out for monitoring of physical parameters, plant growth and the efficiency of total petroleum hydrocarbon (TPH) removal, as an indication for diesel contamination, to assess the pilot-scale performance. Four pilot CWs with a horizontal sub-surface flow system were applied using the bulrush of Scirpus grossus. The CWs were loaded with different diesel concentrations of 0, 0.1, 0.2 and 0.25% (Vdiesel/Vwater). The TPH removal efficiencies were 82, 71, and 67% at the end of 72 days for diesel concentrations of 0.1, 0.2, and 0.25% respectively. In addition, the high removal efficiency of total suspended solids and chemical oxygen demand (COD) were 100 and 75.4% respectively, for a diesel concentration of 0.1%. It was concluded that S. grossus is a potential plant that can be used in a well-operated CW for restoring 0.1% diesel-contaminated water.

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A pilot scale study of a sequencing batch reactor treating municipal wastewater operated via the UP-PND process

Water Science & Technology ◽

10.2166/wst.2008.366 ◽

2008 ◽

Vol 58 (2) ◽

pp. 435-438 ◽

Cited By ~ 17

Author(s):

M. Kornaros ◽

C. Marazioti ◽

G. Lyberatos

Keyword(s):

Wastewater Treatment ◽

Municipal Wastewater ◽

Batch Reactor ◽

Treatment Plant ◽

Pilot Scale ◽

Treated Wastewater ◽

Synthetic Wastewater ◽

Second Step ◽

Decentralized Wastewater Treatment ◽

Real Wastewater

SBRs are usually preferred as small and decentralized wastewater treatment systems. We have demonstrated previously that using a frequent enough switching between aerobic and anoxic conditions and a specific to the treated wastewater aerobic to anoxic phase ratio, it is possible to by-pass the second step of nitrification (i.e. conversion of nitrite to nitrate nitrogen). This innovative process for nitrate by-pass has been branded as UP-PND (University of Patras-Partial Nitrification Denitrification) (WO 2006/129132). The proved methodology was successfully transferred from a lab-scale SBR reactor treating synthetic wastewater to a pilot-scale SBR system treating real wastewater. In this work we present the results from the operation of this pilot-scale SBR, constructed in the Wastewater Treatment Plant of Patras (Greece), using 6-hour, 8-hour and 12-hour cycles. It is demonstrated that three pairs of aerobic/anoxic phases with a relative duration of 1:2 (8-hour cycle) and 2:3 (12-hour cycle) secures the desired by-pass of nitrate production.

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Developing the combined magnetic, electric and air flow (KLME) separator for RMSW processing

Waste Management & Research ◽

10.1177/0734242x18770251 ◽

2018 ◽

Vol 36 (9) ◽

pp. 779-787 ◽

Cited By ~ 1

Author(s):

J Faitli ◽

B Csőke ◽

R Romenda ◽

Z Nagy ◽

S Németh

Keyword(s):

Air Flow ◽

Three Dimensional ◽

Pilot Scale ◽

Processing Plant ◽

Electrically Conductive ◽

Magnetic Separator ◽

Two Dimensional Materials ◽

Physical Processing ◽

Fundamental Research ◽

Belt Conveyors

The authors are working on the development of a mechanical–physical processing plant to prepare non-selectively collected residual municipal solid waste (RMSW) in the Zalaegerszeg region of Hungary. A key element of this processing plant is the newly developed KLME separator (the name KLME is the Hungarian abbreviation of ‘combined magnetic, electric and air flow’). This separator is a combination of three widely applied separators, namely a magnetic separator, an eddy current separator and two types of air flow separators designed without the ordinarily necessary cross connecting belt conveyors and feeders. Extensive RMSW and WEEE (waste electrical and electronic equipment) sampling and analyses were carried out in three municipalities to obtain model materials before designing the technology. After fundamental research and laboratory-scale testing, a pilot-scale KLME separator prototype (1.5 ton/h) was made. It has one input stream and five output streams targeted towards five types of products: two-dimensional materials (foils), three-dimensional light materials, magnetic materials, electrically conductive materials and heavy inert materials. Systematic pilot scale testing was carried out and 18 discrete technological setups were tested. The technology as well as the machine were continuously improved and modified based on on-site observations. The best yields and the experience gained are being utilised for the design of an industrial size machine.

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