Effectiveness of dry ponds for stormwater total suspended solids removal

2002 ◽  
Vol 29 (2) ◽  
pp. 316-324 ◽  
Author(s):  
Y Shammaa ◽  
D Z Zhu ◽  
L L Gyürék ◽  
C W Labatiuk
Keyword(s):  
Suspended Solids ◽  
Total Suspended Solids ◽  
Two Stage ◽  
Detention Ponds ◽  
Detention Time ◽  
Important Means ◽  
Multi Level ◽  
Solids Removal ◽  
The City

This paper reviews the factors and criteria for the design of new and the retrofitting of existing dry detention ponds to enhance removal of total suspended solids (TSS) from stormwater. Detention time is discussed as the most important factor affecting TSS removal. Two-stage facilities and multi-level outlet design are important means of enhancing TSS removal in dry ponds. Two dry ponds within the city of Edmonton were selected to evaluate their TSS removal. The level of expected TSS removal is low owing to the relatively short detention times for both ponds. Methods for retrofitting the dry ponds to enhance TSS removal are discussed.Key words: dry pond, stormwater, TSS removal, detention time, retrofitting.

scholarly journals WATER QUALITY INDEX OF TIGRIS RIVER WITHIN BAGHDAD CITY: A REVIEW

2021 ◽  
Vol 25 (3) ◽  
pp. 34-43
Author(s):  
Tamarah A. Adnan ◽  
◽  
Eman A. Mohammed ◽  
Abdul-Sahib T. Al-Madhhachi ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Fecal Coliform ◽  
Suspended Solids ◽  
Review Paper ◽  
Total Suspended Solids ◽  
Total Hardness ◽  
Iron Ion ◽  
The North ◽  
Tigris River ◽  
The City

Tigris River is the only potable source in Baghdad city therefor many water treatment plants were built on the banks such as Al-Karkh, Sharq Dijla, Al-Sadr, Al-Wathba, Al-Karama, AlQadisia, Al-Dora, Al-Wahda, and Al-Rashed project. Tigris River suffers from the pollution that comes from various sources such as Industry, domestic sanitation, and farming activities therefore several indices were used to calculate water quality within Baghdad to convert physicochemical parameters of water to a single value that represents the river status (good, bad, very bad, etc..).The aim of this review paper to show the results of previous studies about the water quality for the Baghdad region. Most results showed that water quality was good in the north of the city of Baghdad and bad in the south of Baghdad. The deterioration of water quality was due to many reasons such as the discharge of wastewater directly into the river without pretreatment, increase in (Electic conductivity, Turbidity, and total suspended solids, total hardness, Iron ion, the fecal coliform)concentrations, and Climate change, therefore, Tigris River needs intensive treatment before using by humans.

scholarly journals Effect of sedimentation time on the granulometric composition of suspended solids in the backwash water from biological activated carbon filters

2018 ◽  
Vol 44 ◽  
pp. 00072
Author(s):  
Małgorzata Komorowska-Kaufman ◽  
Filip Ciesielczyk ◽  
Alina Pruss ◽  
Teofil Jesionowski
Keyword(s):  
Activated Carbon ◽  
Granulometric Composition ◽  
Suspended Solids ◽  
Total Suspended Solids ◽  
Particle Sizes ◽  
Filtration Time ◽  
Biological Activated Carbon ◽  
Percentage Volume ◽  
Solids Removal ◽  
Sedimentation Time

The paper presents the results of analyzes of the granulometric composition of suspended solids in backwash water from biological activated carbon (BAC) filters and its changes during sedimentation. Backwash water samples were taken during backwashing of two pilot filters after different filtration time. It was found that regardless of the concentration of suspended solids in the collected backwash water, particle sizes vs. their percentage volume contributions for all samples were similar. Particle sizes were in the range of 2–100 μm. However, the two-hour sedimentation for most of the samples proved to be effective (total suspended solids removal up to 93%), which is caused by self-coagulation of the sample.

The use of ozone during advanced primary treatment of wastewater for its reuse in agriculture: an approach to enhance coagulation, disinfection and crop productivities

2008 ◽  
Vol 57 (6) ◽  
pp. 955-962 ◽  
Author(s):  
A. E. Campos-Reales-Pineda ◽  
M. T. Orta de Velásquez ◽  
M. N. Rojas-Valencia
Keyword(s):  
Suspended Solids ◽  
Settling Velocity ◽  
Total Suspended Solids ◽  
Primary Treatment ◽  
Turbidity Removal ◽  
Helminth Eggs ◽  
Ozone Dose ◽  
Reduced Toxicity ◽  
Solids Removal ◽  
Plant Germination

The purpose of this work was to evaluate the effect that ozone (O3) has on the advanced primary treatment (APT) and disinfection of wastewaters for their reuse in agriculture. The enhancement and optimization of APT was done by applying low O3 doses during coagulation. By applying an ozone dose of 2 mg/L during APT, the required coagulant dose may be reduced by up to 25% to achieve a similar turbidity removal (and up to 50% for total suspended solids removal), when compared to a conventional APT treatment. When the same coagulant dose was applied (60 mg/L), the volume of settleable solids was reduced from 31.0 to 25.5 mL/L, and the settling velocity increased from 0.111 to 0.139 m/min. Disinfection was also improved by the use of ozone, which leads to better plant germination rates than when using chlorination, because of reduced toxicity of the ozonated effluents. Additionally, helminth eggs content was reduced by applying ozone.

scholarly journals Análise física da água de entrada no sistema agroindustrial de curtume em Maringá-Paraná

2019 ◽  
Vol 41 ◽  
pp. 16
Author(s):  
Marcelo Estevam ◽  
Adriano Willian da Silva ◽  
Frederico Fonseca da Silva
Keyword(s):  
Suspended Solids ◽  
Total Suspended Solids ◽  
Total Dissolved Solids ◽  
Human Consumption ◽  
Physical Parameters ◽  
Environmental Legislation ◽  
Apparent Color ◽  
The City ◽  
Cutting System

Assessment of water quality is extreme importance for the health of animals, especially humans. The physical paraments (electrical conductivity, pH, turbidity, apparent color, taste, smell, total solids, total dissolved solids, total suspended solids), in water indicate the quality, including that used for human consumption. Therefore, a water inspection at the entrance and exit of an agroindustrial cutting system in the city of Maringa (Brazil), between the years 2014 and 2017, is important for a relaxation of water standards. The results were published and published based on the environmental legislation showed that the quality of the water used in the agroindustry, regarding the physical parameters, respects as current environmental regulations, not causing damage to the environment and demonstrating that the process used in the agroindustrial system is efficient from an environmental standpoint.

Pollutant removal from oily wastewater discharged from car washes through sedimentation–coagulation

2009 ◽  
Vol 59 (12) ◽  
pp. 2359-2369 ◽  
Author(s):  
H. Rubí ◽  
C. Fall ◽  
R. E. Ortega
Keyword(s):  
Suspended Solids ◽  
Potential Problem ◽  
Total Suspended Solids ◽  
Pollutant Removal ◽  
Oil Removal ◽  
Sewer System ◽  
Residual Concentration ◽  
Aluminium Sulfate ◽  
Diallyldimethylammonium Chloride ◽  
Solids Removal

Wastewater from car washes represents a potential problem for the sewer system due to its emulsified oils and suspended material. Treatment of wastewater discharged from four car washes was investigated by sedimentation and coagulation. The effect of the coagulants Servical P (aluminium hydroxychloride), Servican 50 (poly(diallyldimethylammonium chloride)), aluminium sulfate and ferric chloride was evaluated. The achieved removal using sedimentation was of 82%, 88% 73% and 51% for oils, total suspended solids, COD, and turbidity, respectively. In the treatment by coagulation we achieved average efficiencies nearly to 74% for COD removal, greater than 88% in the case of total suspended solids removal and 92% in the case of turbidity and except the performance of Servican 50 greater than 90% in oil removal. We concluded that the oil residual concentration and COD in the treated water allows pouring it in the sewer system complying with the limits of the Mexican rule NOM-002-ECOL-1996 and it is possible even its reuse, at least in the case of the chassis washing of cars.

scholarly journals Pollutant Removal from Highway Runoff Using Retention/Detention Units

10.14311/220 ◽  
2001 ◽  
Vol 41 (2) ◽  
Author(s):  
Ashraf El-Shahat Elsayed ◽  
A. Grünwald ◽  
D. Dvořák
Keyword(s):  
Czech Republic ◽  
Suspended Solids ◽  
Peak Flow ◽  
Total Suspended Solids ◽  
Pollutant Removal ◽  
Highway Runoff ◽  
Detention Ponds ◽  
Site Characteristics ◽  
Strong Relation ◽  
Runoff Quality

Highway runoff contains total suspended solids, hydrocarbons, oil and greases, chloride, and other contaminants that are transported in solution and particulate forms to adjacent floodplains, roadside swales, and retention/detention ponds. Oil and grit chambers represent a type of retention/detention unit used for removing heavy particulates and adsorbed hydrocarbon particulates. Storage/sediment units also represent a type of retention/detention unit used for controlling peak flow and removing suspended solids. The aim of this study is to evaluate the effect of traffic volume and site characteristics on highway runoff quality. The study also aims to evaluate the performance of retention/detention units that collect runoff from the Prague-Brno and Prague-Plzeň highways, Czech Republic. The results of this study indicate no definitive relationship between average daily traffic and concentration of runoff constituents, though the site characteristics have a strong relation to some constituents. The results also show that retention/detention units are effective in treating organic compounds.

Compressible synthetic dual-medium filtration of wastewater effluents for water reuse

2006 ◽  
Vol 1 (3) ◽  
Author(s):  
S.K. Maeng ◽  
K.H. Ahn ◽  
K.P. Kim ◽  
K.G. Song ◽  
K.Y. Park
Keyword(s):  
Removal Efficiency ◽  
Water Reuse ◽  
Granular Media ◽  
Suspended Solids ◽  
Synthetic Medium ◽  
Total Suspended Solids ◽  
Polyurethane Foams ◽  
The Media ◽  
Solids Removal ◽  
Wastewater Effluents

A novel filtration process using compressible synthetic dual-medium filter was investigated for wastewater effluents reclamation. In synthetic medium filtration system, the fluid to be filtered flows through the media as opposed to flowing around the filtering media as in granular media filters. Three types of open porous polyurethane foams with different densities and pore sizes were tested to determine their performances with respect to the removal of turbidity and total suspended solids. Media with smaller porosity showed higher removal efficiency in both turbidity and total suspended solids. Second, single- and dual-medium synthetic filters were compared to evaluate their feasibilities of treating wastewater effluents for water reuse applications and determined the optimum range to meet water reuse standard of the turbidity (i.e., turbidity <2 NTU). To meet water reuse standards (i.e., turbidity <2 NTU) in this study, single- and dual-synthetic medium filters will need to operate at compression ratios of 30 (<333 L/m2·min) and 50% (<500 L/m2·min), respectively. The removal efficiency of turbidity was slightly increased with the increase in compression ratios, and the total suspended solids removal was more affected by the filtration rates than that of turbidity in the synthetic medium filtration.

scholarly journals Wastewater lagoon solids, phosphorus, and algae removal using discfiltration

2020 ◽  
Vol 55 (4) ◽  
pp. 382-393
Author(s):  
Guillaume LeBlond ◽  
Patrick M. D'Aoust ◽  
Chris Kinsley ◽  
Robert Delatolla
Keyword(s):  
Suspended Solids ◽  
Municipal Wastewater ◽  
Total Suspended Solids ◽  
Pilot Scale ◽  
Filter Cloth ◽  
The Third ◽  
Algae Removal ◽  
Chemical Enhancement ◽  
Lower Maximum ◽  
Solids Removal

Abstract The microsieving discfilter technology was investigated at the pilot scale. The pilot was configured to treat the effluent from a municipal wastewater multi-lagoon facility consisting of two facultative lagoons and a third seasonally aerated lagoon that is aerated to mitigate hydrogen sulfide release. The 10 μm filter, operated without chemical enhancement, demonstrates 60.1 ± 22.6% removal of the lagoon effluent total suspended solids (TSS) during periods of operation without aeration of the third lagoon. Aeration of the third lagoon of the multi-lagoon system prior to discharge renders the 10 μm filter cloth ineffective with respect to solids removal. The 5 μm filter cloth performs effective nonchemically enhanced removal of solids even during aeration of the lagoon, removing 68.2 ± 9.85% of effluent TSS. The greater performance of the 5 μm filter was achieved at the expense of a lower maximum conveyance capacity than the 10 μm filter. The 10 and 5 μm filters decrease the effluent total phosphorus (TP) concentrations by 0.14 and 0.13 mg-P/L, respectively. Algae, characterized as Chlorophyll α, shows removal from influent concentrations of 10.25 ± 4.19 μg/L to concentrations of 4.61 ± 1.28 μg/L for the 10 μm filter, and 4.10 ± 0.65 μg/L for the 5 μm filter.

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