scholarly journals Environmentally friendly interlocking concrete paver blocks produced with treated wastewater

2019 ◽  
Vol 19 (7) ◽  
pp. 2028-2035
Author(s):  
Adriano Luiz Tonetti ◽  
Natalia Cangussu Duarte ◽  
Mariana Rodrigues Ribeiro dos Santos ◽  
Gustavo Henrique Siqueira
Keyword(s):  
Water Consumption ◽  
Potable Water ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Good Alternative ◽  
Treated Wastewater ◽  
Water Composition ◽  
Consumption Reduction ◽  
Concrete Production ◽  
Parking Lot

Abstract This study aimed at supporting processes and techniques for minimization of water consumption in the production of concrete. For this purpose, the use of treated wastewater from a wastewater treatment plant (WWTP) in interlocking concrete paver block (ICPB) production was evaluated. The treated wastewater was added in various dosages (0%, 50%, 75% and 100%) to the water used to produce cylindrical concrete samples. These samples were evaluated for compressive strength and water absorption tests. After these evaluations, the dosage of 100% treated wastewater for concrete production was established and ICPB were produced with this water composition. Subsequently, an area in a parking lot was replaced by ICPB produced with treated wastewater, and an equal area was replaced by ICPB produced with potable water. A comparison between parameters obtained for cylindrical samples and ICPB samples prepared with treated wastewater and those prepared with potable water indicated that wastewater reuse would be a good alternative for potable water consumption reduction in the concrete industry.

scholarly journals Impact of treated wastewater on groundwater quality in the region of Tiznit (Morocco)

2015 ◽  
Vol 6 (3) ◽  
pp. 454-463 ◽  
Author(s):  
Mounir El Heloui ◽  
Rachida Mimouni ◽  
Fatima Hamadi
Keyword(s):  
Groundwater Quality ◽  
Potable Water ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Average Concentration ◽  
Fecal Coliforms ◽  
Treated Wastewater ◽  
Shallow Wells ◽  
Microbiological Parameters ◽  
The Impact

The Tiznit region has an arid to semi-arid climate. Rainfall is scarce and the reuse of wastewater for crop irrigation is common, and consequently groundwater can be contaminated by chemical and biological pollutants. A wastewater treatment plant is constructed with the aim of producing water suitable for reuse in agriculture and reducing groundwater pollution. The aim of this study is to assess the impact of factors that may influence groundwater quality, namely wastewater reuse and fertilizer use in the region. Groundwater was collected monthly over 1 year from five shallow wells (P1–P5) and analysed for a range of physicochemical and microbiological parameters. Concentrations frequently exceeded the WHO standards for potable water. The average concentration of nitrate was 98 mg/L. Conductivity varied from 1,930 to 2,500 μS/cm over four of the wells but was 11,703 in P3, which was close to the treatment plant. Bacteriological contamination was also found, with total coliforms varying from 0 at P1 to 9,000 cfu/100 mL at P4 and fecal coliforms (FC) 0 in P1, P2, P3 and P5 but up to 250 FC/100 mL at P4. Fecal streptococci (FS) varied from 0 to 3,500 FS/100 mL at P4. These values widely exceeded the limit for bacteria in water (0 units/100 mL).

scholarly journals Water Quality and Financial Analysis of a System Combining Rainwater and Greywater in a House

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 930
Author(s):  
Gustavo Rosa ◽  
Enedir Ghisi
Keyword(s):  
Water Consumption ◽  
Potable Water ◽  
Treatment Process ◽  
Financial Analysis ◽  
Good Alternative ◽  
Water Savings ◽  
Financial Benefits ◽  
Before And After ◽  
Local Water ◽  
Water Tariffs

This study aimed to evaluate the installation of a system that combines rainwater to wash clothes and greywater to flush toilets in a house located in Florianópolis, southern Brazil. The evaluation consisted of determining the potable water savings, performing a financial analysis, and verifying the possibility of using rainwater and reusing greywater according to the local legislation. The reduction in potable water consumption was determined by comparing the monthly water and sewage bill, before and after installing the system, combining rainwater and greywater. The financial analysis was performed considering the financial benefits, operational costs, costs for installing the system, and local water tariffs. After installing the system, there was a decrease of 38.0% in the monthly potable water consumption, which represents a decrease of 7.00 m3 in the monthly potable water consumption. The payback periods for the old and new water tariffs were equivalent to, respectively, ten years and seven months, and eight years and five months. Both rainwater and greywater had parameters with concentrations higher than the limits established by the legislation. Therefore, the rainwater had to go through a device for discarding the first flush and needed disinfection; and the greywater needed to go through a treatment process. The results indicated that the system combining rainwater and greywater shows significant potential for potable water savings, which can be a good alternative to the preservation of potable water resources. It is important to note that current studies on rainwater use and greywater reuse are mainly related to non-potable purposes, but it was shown herein that rainwater can be used for washing clothes.

scholarly journals Estimation of water quality by UV/Vis spectrometry in the framework of treated wastewater reuse

2017 ◽  
Vol 76 (3) ◽  
pp. 633-641 ◽  
Author(s):  
Erwan Carré ◽  
Jean Pérot ◽  
Vincent Jauzein ◽  
Liming Lin ◽  
Miguel Lopez-Ferber
Keyword(s):  
Wastewater Reuse ◽  
Reclaimed Water ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Treated Wastewater ◽  
Water Production ◽  
Least Squares Regression ◽  
Complementary Method ◽  
Original Dataset ◽  
Treated Wastewater Reuse

The aim of this study is to investigate the potential of ultraviolet/visible (UV/Vis) spectrometry as a complementary method for routine monitoring of reclaimed water production. Robustness of the models and compliance of their sensitivity with current quality limits are investigated. The following indicators are studied: total suspended solids (TSS), turbidity, chemical oxygen demand (COD) and nitrate. Partial least squares regression (PLSR) is used to find linear correlations between absorbances and indicators of interest. Artificial samples are made by simulating a sludge leak on the wastewater treatment plant and added to the original dataset, then divided into calibration and prediction datasets. The models are built on the calibration set, and then tested on the prediction set. The best models are developed with: PLSR for COD (Rpred2 = 0.80), TSS (Rpred2 = 0.86) and turbidity (Rpred2 = 0.96), and with a simple linear regression from absorbance at 208 nm (Rpred2 = 0.95) for nitrate concentration. The input of artificial data significantly enhances the robustness of the models. The sensitivity of the UV/Vis spectrometry monitoring system developed is compatible with quality requirements of reclaimed water production processes.

scholarly journals A survey of attitudes and acceptance of wastewater reuse in Iran: Shiraz City as a case study

2016 ◽  
Vol 7 (4) ◽  
pp. 511-519 ◽  
Author(s):  
Mohammad Ali Baghapour ◽  
Mohammad Reza Shooshtarian ◽  
Babak Djahed
Keyword(s):  
Wastewater Treatment ◽  
Demographic Data ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Microbiological Quality ◽  
Treated Wastewater ◽  
Reclaimed Wastewater ◽  
Wastewater Treatment Process ◽  
Skin Contact ◽  
Willingness To Use

People's attitudes are a key issue in the use of reclaimed wastewater. Unfortunately, there is not enough research on the use of reclaimed wastewater in developing countries such as Iran. The present study aimed to investigate public acceptance and citizens' attitudes toward reclaimed wastewater in Shiraz, Iran. A two-part questionnaire, designed to collect demographic data and information about people's willingness to reuse wastewater, was distributed among 562 citizens of Shiraz. The results showed that most respondents knew nothing about the chemical quality (67.4%) or microbiological quality (81.5%) of the wastewater treatment plant effluent. The maximum acceptance of treated wastewater use was related to public consumption (87%), car washing (85%) and flush tank (80%), respectively. The minimum acceptance was related to cooking and drinking (8%). Also, a significant correlation was observed between citizens' willingness to use reclaimed wastewater and variables such as level of education, gender, awareness of wastewater treatment process and awareness of quality of reclaimed wastewater. Shiraz citizens, like other people in the world, were less willing to use reclaimed wastewater for cooking, drinking, laundry and bathing, but their willingness was obviously greater in applications with less skin contact.

scholarly journals MULTI-CRITERIA ASSESSMENT MODEL TO IDENTIFY SUITABLE AREAS FOR TREATED WASTEWATER REUSE IN AGRICULTURE

2021 ◽  
Author(s):  
María Laura Gatto D'Andrea ◽  
Martín Alejandro Iribarnegaray ◽  
Walter Alfredo Tejerina ◽  
Ariela Griselda Judith Salas Barboza ◽  
Juan José Correa ◽  
...  
Keyword(s):  
Geographical Information Systems ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Assessment Model ◽  
Geographical Information ◽  
Treated Wastewater ◽  
Suitability Analysis ◽  
Treated Wastewater Reuse ◽  
Local Actors

A model of land suitability analysis for irrigation with treated domestic wastewater is presented. The model integrates tools of Multi-Criteria Evaluation with Geographical Information Systems. Several criteria were selected to adapt the model to the conditions and characteristics of the case study. The adaptation process included field visits, a bibliographical review, and personal interviews with local actors and experts. Six constraints and 10 factors were selected and 3158 hectares suitable for the activity were identified. The areas were classified into three categories of aptitude, representing high fitness sites close to the current wastewater treatment plant. The developed tool allowed us to integrate different criteria to assess site suitability for wastewater reuse, with the advantage that the tool can be adapted to other regions and/or objectives.

Water Quality for Potable Reuse

1991 ◽  
Vol 23 (10-12) ◽  
pp. 2171-2180 ◽  
Author(s):  
William C. Lauer
Keyword(s):  
Water Quality ◽  
Water Reuse ◽  
Potable Water ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Test Results ◽  
Potable Reuse ◽  
Extensive Analysis ◽  
Animal Feeding ◽  
Direct Potable Reuse

Denver's Potable Water Reuse Demonstration Project is designed to examine the feasibility of converting secondary treated wastewater to potable water quality. A 1.0 mgd (44L/s) treatment plant began operation in 1985 and during the first three years many processes were evaluated. Data from the evaluation period was used to select the optimum treatment sequence which is now being used to produce samples for the two-year animal feeding health effects study now underway. Operation in this configuration will continue until early 1991 during which time comprehensive analytical studies will further define the water quality in relation to existing standards and Denver's current potable supply. A decision concerning the full-scale implementation of direct potable reuse will follow extensive analysis of the test results and in-depth economic evaluation.

scholarly journals The Potential of Wastewater Reuse for Agricultural Irrigation in Libya: Tobruk as a case study

2015 ◽  
Vol 17 (2) ◽  
pp. 357-369 ◽  
Keyword(s):  
Water Reuse ◽  
Wastewater Reuse ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Environmental Benefits ◽  
Treated Wastewater ◽  
Food Crops ◽  
Agricultural Irrigation ◽  
Treated Effluent ◽  
Treated Wastewater Reuse

<div> <p>The aim of this paper is to highlight the way towards the exploitation of treated wastewater for food crops production in order to cope with the acute water scarcity and its hazardous consequences. Reclaimed water reuse has not been practiced in Tobruk, and hence, lack of relevant data and information was the major difficulty in carrying out this research. The existing sewage treatment plant in Tobruk city produces about 7,000 cubic meters per day of suitable effluent for agricultural irrigation and safe discharge. This proportion is worth twice as much as the water being currently used for irrigation. Therefore, with proper planning and management, treated wastewater reuse schemes, in addition to their economical and environmental benefits, can be an efficient mechanism to cope with water shortage and reducing the high burden placed on the desalination plant. Wastewater reuse is considered as a reliable, secure, and drought-resistant water source. Owing to the lack of disinfection processes and routinely monitoring data, there is uncertainty concerning the microbiological safety and quality of the treated effluent. Public perception might be the major challenge facing the planning for a reuse scheme as 51 % of the population of Tobruk have shown their reluctance to consume food crops irrigated with treated wastewater. Nonetheless, public attitudes can be fostered by awareness through the media as some people, when the issue was discussed, have shown a positive response. In fact their main concerns were related to public health safety and potential negative environmental impacts which can be addressed through good planning and prudent management.</p> </div> <p>&nbsp;</p>

scholarly journals Hydrological and Environmental Impact of Wastewater Treatment and Reuse on Zarqa River Basin in Jordan

Environments ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 14
Author(s):  
Naser Almanaseer ◽  
Muna Hindiyeh ◽  
Raha Al-Assaf
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Jordan Valley ◽  
Treated Wastewater Reuse ◽  
Effective System ◽  
Zarqa River ◽  
The Impact

Treated wastewater is an important component of the water resource in Jordan. As Samra wastewater treatment plant—the largest treatment plant in Jordan—discharges ~110 MCM per year of secondary treated municipal wastewater to Zarqa River, and eventually to Jordan Valley. This research aims at assessing the impact of treated wastewater reuse on the hydrology and environment in the most vulnerable areas within Amman-Zarqa Basin, specifically from As Samra treatment plant to Jerash Bridge. Historical data is collected, field survey is performed, and chemical and biological analyses are performed at eleven selected locations along the study area. Afterwards, all collected data is managed using suitable tools to address the impact. The findings of this research demonstrate high improvement in biological and microbial parameters along the flow path, yet the salinity is increased downstream. It is found that this increase is due to brackish water intrusion, apparently from sandstone aquifer. Analysis of BOD and COD carried out as part of this research showed effective system recovery with COD reduction from 130 mg/L at the effluent to less than 50 mg/l in the downstream. Moreover, microbial activities are reduced, mainly due to self-purification in the river.

scholarly journals Effect of Using Tertiary Treated Wastewater from Nablus Wastewater Treatment Plant (NWWTP), On Some Properties of Concrete

2019 ◽  
Vol 8 (11) ◽  
pp. 2460-2466
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Potable Water ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Partial Replacement ◽  
Test Results ◽  
Replacement Ratio ◽  
Concrete Mixtures ◽  
Domestic Use

This research paper aims at presenting the effect of using tertiary treated wastewater from Nablus Wastewater treatment plant (NWWTP) on some properties of concrete. The research idea have both environmental and economic aspects. The use of tertiary treated wastewater in partial replacement of potable water in concrete mixtures, will save substantial amount of potable water for domestic use. The research variables are water cement ratios (w/c) = 0.5, 0.6 and 0.7, replacement ratios (30%, 60%. and 100%); and curing ages at 7, 14 and 28 days. Different concrete properties were investigated such as compressive strength, natural absorption and workability (Slump). The tests results of concrete cube samples were compared for both types of water, at different replacement ratios and curing ages. The general trend of test results revealed increase in maximum compressive stress of concrete made with w/c=0.5, 0.6, and decrease at w/c=0.7. The recommended replacement ratio of tertiary treated wastewater in concrete mixtures would be 30% to 40%.

Sign in / Sign up

Export Citation Format

Share Document