“Gully pit inserts” shown to reduce pollutants in stormwater

2021 ◽  
Vol 6 (1) ◽  
pp. 1-13
Author(s):  
Brad Dalrymple ◽  
Michael Wicks ◽  
Warren Jones ◽  
Blake Allingham
Keyword(s):  
Performance Monitoring ◽  
Suspended Solids ◽  
Control Measure ◽  
Flow Analysis ◽  
Performance Testing ◽  
Data Access ◽  
Stormwater Treatment ◽  
Remote Communication ◽  
Treated Effluent ◽  
Car Park

‘Gully pit inserts’ (or ‘gully baskets’) are a commonly applied stormwater control measure given they can often be easily integrated into gully pits with no impact to the usability of the area. Stormwater treatment performance monitoring has been undertaken for a gully pit with a fine grade (200-micron) bag of 300mm depth in a car-park in Western Sydney, NSW, Australia. The gully pit insert receives runoff from a 100% impervious car-park area of 400m2. Influent and effluent water quality samples were collected using automated samplers, which were connected to pre-configured and calibrated flow analysis of treated effluent and sample pacing with remote communication and data access. Collected samples were delivered to and analysed in a NATA-accredited laboratory for pH and concentrations of suspended solids and nutrient species. Monitoring was undertaken between December 2019 and March 2021, with a total of fifteen (15) runoff events recorded during this period. The performance testing demonstrated that the gully pit insert was able to achieve significant reductions in stormwater pollutant concentrations, with a concentration reduction efficiency ratio for total suspended solids, total phosphorus and total nitrogen of 52, 67 and 41% respectively.

Parametric Studies of Power Plant Performance Monitoring

2002 ◽  
Author(s):  
Vijiapurapu Sowjanya ◽  
Robert Craven ◽  
Sastry Munukutla
Keyword(s):  
Real Time ◽  
Power Plants ◽  
Performance Monitoring ◽  
Performance Testing ◽  
Electric Power Industry ◽  
Plant Performance ◽  
Industry Performance ◽  
Parametric Studies ◽  
Loss Method ◽  
Coal Composition

Real-time performance monitoring of coal-fired power plants is becoming very important due to the impending deregulation of the electric power industry. Performance testing is made to be real-time by changing the traditional output loss method to include an estimation of coal composition based on the Continuous Emission Monitoring System (CEMS) data. This paper illustrates the robustness of the calculations by introducing a variance into each of the calculation inputs to access its effect on the final outputs of heatrate, boiler efficiency and coal flow. Though the original study was over five power plants this paper presents results for the two most diverse coals.

Innovative Stormwater Treatment Implementation at Parking Lot in China

2011 ◽  
Vol 255-260 ◽  
pp. 2718-2721
Author(s):  
Ru Zhang ◽  
Anthony N. Tafuri ◽  
Richard Field ◽  
Shaw L. Yu ◽  
Wen Bin Zhou ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Low Impact Development ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Stormwater Treatment ◽  
Storm Events ◽  
Nonpoint Sources ◽  
Treatment Implementation ◽  
Parking Lot

Xikeng Reservoir is one of the major water supply reservoirs in Shenzhen. The water quality of Xikeng Reservoir has been poor, with much of the pollution coming from nonpoint sources. An innovative low impact development type of BMP called the BioBox was used at the Administration Building parking lot location, as a research site and demonstration project to show how small alterations to parking lot designs can dramatically decrease pollutant loads. Manual samples were collected during storm events and analyzed for total suspended solids (TSS); five-day biochemical oxygen demand (BOD5); ammonia nitrogen (NH3-N), and total phosphorus (TP). In summary, the ranges of removal rates of the BioBox are: TSS 70% - 90%; BOD5 20% - 50%, and ammonia and phosphorus 30% - 70%. The BioBox system effectively reduced the concentrations of pollutants in the parking lot runoff.

Hydraulic and treatment performance of pervious pavements under variable drying and wetting regimes

2011 ◽  
Vol 64 (8) ◽  
pp. 1692-1699 ◽  
Author(s):  
C. F. Yong ◽  
A. Deletic ◽  
T. D. Fletcher ◽  
M. R. Grace
Keyword(s):  
Suspended Solids ◽  
High Flow ◽  
Pollutant Removal ◽  
Low Flow ◽  
Storm Event ◽  
Stormwater Treatment ◽  
Storm Events ◽  
Treatment Technology ◽  
Porous Asphalt ◽  
Treatment Performance

Pervious pavements are an effective stormwater treatment technology. However, their performance under variable drying and wetting conditions have yet to be tested, particularly under a continuous time scale. This paper reports on the clogging behaviour and pollutant removal efficiency of three pervious pavement types over 26 accelerated years. These pavements were monolithic porous asphalt (PA), Permapave (PP) and modular Hydrapave (HP). Over a cycle of 13 days, the period of which was equivalent to the average annual Brisbane, Australia rainfall (1,200 mm), the pavements were randomly dosed with four different flows. Drying events of 3 h duration were simulated during each flow. Inflow and outflow samples were collected and analysed for Total Suspended Solids (TSS), Total Phosphorus (TP) and Total Nitrogen (TN). To evaluate the rate of clogging, a 1 in 5 year Brisbane storm event was simulated in the 6th, 8th, 12th, 16th, 20th and 24th week. Under normal dosing conditions, none of the pavements showed signs of clogging even after 15 years. However, under storm conditions, both PA and HP started to clog after 12 years, while PP showed no signs of clogging after 26 years. The drying and various flow events showed no effects in TSS removal, with all systems achieving a removal of approximately 100%. The average TP removal was 20% for all flows except for low flow, which had a significant amount of leaching over time. Leaching from TN was also observed during all flows except high flow. The TSS, TP and TN results observed during storm events were similar to that of high flow.

Tertiary treatment of biologically treated piggery wastewater using vibratory shear-enhanced RO membrane

2004 ◽  
Vol 49 (5-6) ◽  
pp. 435-442 ◽  
Author(s):  
J. Lee ◽  
S. Kim ◽  
J. Choi ◽  
H. Hwang ◽  
M. Cha ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Pilot Test ◽  
Tertiary Treatment ◽  
Livestock Wastewater ◽  
Piggery Wastewater ◽  
Simple Process ◽  
Effluent Standards ◽  
Treated Effluent ◽  
Ro Membrane ◽  
Process Combination

This study presents a good example for the tertiary treatment of biologically treated piggery wastewater using vibratory shear enhanced RO membrane (VSEP RO). Through a simple process combination, utilizing Bioceramic SBR(BCS) and VSEP RO, at Gimhae plant livestock wastewater is treated excellently to meet the strict effluent standards. Application of RO membrane directly to the biologically treated effluent has been successful without any pretreatment to reduce high suspended solids. The combination of VESP UF followed by RO filtration processes produced a higher recovery rate in the 3-week pilot test.

scholarly journals The efficiency of electrocoagulation using aluminum electrodesin treating wastewater from a dairy industry

2015 ◽  
Vol 45 (9) ◽  
pp. 1713-1719 ◽  
Author(s):  
Gerson de Freitas Silva Valente ◽  
Regina Célia Santos Mendonça ◽  
José Antônio Marques Pereira
Keyword(s):  
Current Density ◽  
Suspended Solids ◽  
Operating Cost ◽  
Dairy Industry ◽  
Optimum Operating ◽  
Optimum Operating Condition ◽  
Treated Effluent ◽  
Dairy Plant ◽  
Aluminum Electrodes ◽  
Industry Effluent

<p>This research deals with the investigation of electrocoagulation (EC) treatment of wastewater from a dairy plant using aluminum electrodes. Electrolysis time, pH, current density and distance between electrodes were considered to assess the removal efficiency of chemical oxygen demand (COD), total solids (TS) and their fractions and turbidity. Samples were collected from the effluent of a dairy plant using a sampling methodology proportional to the flow. The treatments were applied according to design factorial of half fraction with two levels of treatments and 3 repetitions at the central point. The optimization of parameters for treating dairy industry effluent by electrocoagulation using aluminum electrodes showed that electric current application for 21 minutes, an initial sample pH near 5.0 and a current density of 61.6A m<sup>-2</sup> resulted in a significant reduction in COD by 57%; removal of turbidity by 99%, removal of total suspended solids by 92% and volatile suspended solids by 97%; and a final treated effluent pH of approximately 10. Optimum operating condition was used for cost calculations show that operating cost is approximately 3.48R$ m<sup>-3</sup>.</p>

scholarly journals Comparative analysis of the outflow water quality of two sustainable linear drainage systems

2014 ◽  
Vol 70 (8) ◽  
pp. 1341-1347 ◽  
Author(s):  
V. C. Andrés-Valeri ◽  
D. Castro-Fresno ◽  
L. A. Sañudo-Fontaneda ◽  
J. Rodriguez-Hernandez
Keyword(s):  
Water Quality ◽  
Petroleum Hydrocarbons ◽  
Suspended Solids ◽  
Drainage System ◽  
Quality Parameters ◽  
Total Petroleum Hydrocarbons ◽  
Drainage Systems ◽  
System A ◽  
Car Park

Three different drainage systems were built in a roadside car park located on the outskirts of Oviedo (Spain): two sustainable urban drainage systems (SUDS), a swale and a filter drain; and one conventional drainage system, a concrete ditch, which is representative of the most frequently used roadside drainage system in Spain. The concentrations of pollutants were analyzed in the outflow of all three systems in order to compare their capacity to improve water quality. Physicochemical water quality parameters such as dissolved oxygen, total suspended solids, pH, electrical conductivity, turbidity and total petroleum hydrocarbons were monitored and analyzed for 25 months. Results are presented in detail showing significantly smaller amounts of outflow pollutants in SUDS than in conventional drainage systems, especially in the filter drain which provided the best performance.

scholarly journals Physical Model Testing Of An Experimental Vortex Device For Controlling Total Suspended Solids In Stormwater

2021 ◽  
Author(s):  
Zihan Mi
Keyword(s):  
Flow Rate ◽  
Suspended Solids ◽  
Performance Testing ◽  
Oil Removal ◽  
Test Results ◽  
Treatment Efficiency ◽  
Compact Size ◽  
Treatment Technologies ◽  
Solids Removal ◽  
Regulatory Guideline

In highly urbanized area, lack of space limits the application of most stormwater quality treatment technologies. Oil/Grit Separators (OGSs) are preferred in these cases due to their compact size and reasonable solids removal efficiency. The objective of this research is to identify the challenges and practical potential solutions of solids treatment performance testing on a full-scaled experimental vortex device (EVD) adopting TRCA’s regulatory guideline titled the “Procedure for Laboratory Testing of Oil/Grit Separators” (referred to in this paper as the Procedure) which stipulates the standards of sediments and oil removal tests in Canada. The test results indicated that: (1) TSS treatment efficiency of EVD was observed to decline with the particle size and flow rate; and (2) the average overall TSS treatment efficiency decreased from 52% to 44% as the flow rate doubled.

scholarly journals Data Secure Algorithm in Cloud Storage

2020 ◽  
Vol 9 (3) ◽  
pp. 2632-2635
Keyword(s):  
Cloud Storage ◽  
Control Measure ◽  
Security Analysis ◽  
Data Access ◽  
Bilinear Pairing ◽  
Cloud Environment ◽  
Security Issues ◽  
Data Access Control ◽  
Cloud Server ◽  
System States

The challenging task is protecting the data which are uploaded to the cloud becomes bigger worries in a cloud environment system. In this type of security is needed for monitoring of data access in a cloud environment and is getting more and more attention in recent days. Few strategies which can be afford for top-secret and an unknown authentication for delicate information and it is more efficient than doing the encrypting data first and then sign or doing the sign first then encrypting the data. However, in so many previous work, delicate information of data users can be reveal to authority, and only the authority is responsible to answer to that type of attribute management and generation of key in the system. The proposed system states that confidentiality and protective of data access control over the cipher text scheme based on cloud security. It is provide a control measure, attribute confidentiality and guard the data’s of user concurrently in a multiple authority cloud system. Both the attributes of designcryptor and signcryptor can be kept secret by not knowing to the authorities and cloud storage server. Besides, decryption in the clouds for users as becomes meaningfully reduced by outsourcing the unwanted bilinear pairing process to the cloud server without humiliating the attribute privacy. The planned scheme is confirmed for protecting the standard model and has the skill to provide top secret, unforged, unknown authentication, and verifiability of public. The security analysis which are relating to comparison of difficulty and results of execution will indicate that the proposed system has the capacity to balance the security issues with respect to computation in hypothetical efficiency.

scholarly journals Study on purification effect of infiltration materials to pavement runoff pollution

2018 ◽  
Vol 53 ◽  
pp. 04045
Author(s):  
Xueling Xu ◽  
Aihong Kang ◽  
Zhingping Lu ◽  
Keke lou ◽  
Changjiang Kou
Keyword(s):  
Pollution Control ◽  
Suspended Solids ◽  
Control Measure ◽  
Low Impact Development ◽  
Purification Process ◽  
Purification Efficiency ◽  
Three Stages ◽  
Runoff Pollution Control ◽  
Runoff Pollution

The concentrations of pollutants in pavement runoff are higher than those in other surface runoff normally, which causes serious problems in protecting the environment of receiving rivers and soils. According to the concept of low impact development (LID), a pavement runoff pollution control measure was developed by using infiltration structure. In order to infiltration structure play a superior role in the control of pavement runoff pollution, purification capacity of four typical infiltration materials was tested. Then, long-term purification efficiency of infiltration materials was explored to suspended solids. Besides, microscopic observation was performed on infiltration materials. Results indicated that purification effects of infiltration materials were significantly different. The purification process can be divided into three stages, which ware "rapid upgrading ", "slow upgrading " and "slow reduction ". Finally, Infiltration materials mainly have two modes to intercept runoff pollutants, which were pore adsorption and mechanical interception of the gap between materials.

Treatment of road runoff by coagulation/flocculation and sedimentation

2019 ◽  
Vol 79 (3) ◽  
pp. 518-525 ◽  
Author(s):  
F. Nyström ◽  
K. Nordqvist ◽  
I. Herrmann ◽  
A. Hedström ◽  
M. Viklander
Keyword(s):  
Laboratory Investigation ◽  
Treatment Effect ◽  
Metal Content ◽  
Suspended Solids ◽  
Metal Reduction ◽  
Stormwater Treatment ◽  
Road Runoff ◽  
Coagulation Process ◽  
Before And After ◽  
Rain Events

Abstract A laboratory investigation of the treatment potential of a coagulation process in the context of stormwater treatment was undertaken. The initial 25 L road runoff generated from four rain events was collected and subjected to a jar-testing regime with two commercial coagulants. The treatment effect was assessed by analysing the runoff before and after treatment for turbidity, suspended solids and metal content. The coagulation process resulted in particle and total metal reduction of more than 90% compared to 40% for only sedimentation. Up to 40% reduction of dissolved Cr, Cu and Pb was also observed compared to 0% for sedimentation. This study shows that coagulation may be a useful process for stormwater treatment systems when the treatment requirements are high.

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