scholarly journals A Modified Bio-Ecological Process for Rural Wastewater Treatment

2017 ◽  
Vol 7 (1) ◽  
pp. 66 ◽  
Author(s):  
Haq Abbasi ◽  
Feng Xu ◽  
Xiwu Lu
Keyword(s):  
Wastewater Treatment ◽  
Ecological Process ◽  
Rural Wastewater

scholarly journals Aerobic Brickbat Grit Sand (ABGS) Purifier is the Alternative Solution: Tackling the Problem of Rural Wastewater Treatment in India

2018 ◽  
Vol 13 (3) ◽  
pp. 457-464
Author(s):  
PRIYANAND AGALE ◽  
PARAG SADGIR
Keyword(s):  
Wastewater Treatment ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Alternative Solution ◽  
Domestic Wastewater Treatment ◽  
Zigzag Pattern ◽  
Important Barrier ◽  
Removal Of Contaminants ◽  
College Of Engineering ◽  
Rural Wastewater

Rural wastewater treatment is mostly ignored in developing and undeveloped countries. The most important barrier for addressing to this problem is cost of treatment and simplified technology. Aerobic Brickbat Grit Sand (ABGS) purifier consists of four stages. Wastewater flows gravitationally through partition walls in zigzag pattern with brick bats filter; Pebble sand filter and charcoal and grit filter which facilitate removal of contaminants from domestic wastewater. In the present study, experimental model for domestic wastewater treatment was setup in the Environmental Engineering laboratory at Government College of Engineering Aurangabad, Maharashtra. Physiochemical analysis was done in August and September of 2016 the percentage removal of contaminants results shows Biological Oxygen Demand (BOD) 92% - 87%, Chemical Oxygen Demand (COD) 93 - 89%, Total Suspended Solids( TSS) 80 - 78% and Turbidity 95 - 85%. The process is considered eco-friendly and easy to install technology for domestic wastewater treatment with use of locally available material. ABGS purifier is decentralized approach of domestic wastewater treatment. Hence ABGS as an alternative solution to tackle over the problem of rural wastewater treatment.

scholarly journals Expected Rural Wastewater Treatment Promoted by Provincial Local Discharge Limit Legislation in China

2019 ◽  
Vol 11 (10) ◽  
pp. 2756 ◽  
Author(s):  
Meishu Wang ◽  
Hui Gong
Keyword(s):  
Wastewater Treatment ◽  
Economic Burden ◽  
Wastewater Treatment Plants ◽  
Pollutant Removal ◽  
Central China ◽  
Financial Policy ◽  
Rural And Urban ◽  
Fast Development ◽  
Urban Wastewater Treatment ◽  
Rural Wastewater

Wastewater treatment in a rural region in China was undeveloped both in treatment capacity and legislation. The successful fast development of urban wastewater treatment plants (WWTPs) demonstrated the importance of legislation, including discharge limits. However, most provinces, with as high as 79.8% of the rural population in China, released no specific local discharge limits. Newly issued top-designed nationwide policy in September of 2018 by central China government required all provinces to issue their local rural wastewater discharge limits before June 2019. For the first time, this research analyzed the requirements of the newly issued policy and their inconsistence with several existing provincial limits. It proposed flexible principles for determination of discharge limits under various conditions to improve the rural residential environment as a whole. This study also proposed the use of the ratio between wastewater treatment cost and life expense to describe economic burden. Economic burden calculation for wastewater treatment in rural and urban regions was established respectively. Based on three conditions described in the new policy, the average burden for all urban residents was estimated as 0.122 ± 0.038% of the total life expense. In comparison, average nationwide rural burden was 0.087 ± 0.035% and 0.564 ± 0.196% for condition I (Total nitrogen(TN)/total phosphorus(TP) for resource recovery) and condition III (TN/TP for pollutant removal), respectively. It was also revealed that a stringent rural discharge limit lead to a Gini value as high as 0.38, indicting policy-related subsidies for rural residents should be carefully considered to ensure a balanced burden. Local discharge limit legislation and suitable financial policy is expected to promote rural wastewater treatment in China in the near future.

scholarly journals The exploitation of swamp plants for dewatering liquid sewage sludge

2006 ◽  
Vol 54 (2) ◽  
pp. 107-116
Author(s):  
Jiří Šálek
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Plant Biomass ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Main Attention ◽  
Local Conditions ◽  
Economic Exploitation ◽  
Rural Wastewater

The operators of little rural wastewater treatment plants have been interested in economic exploitation of sewage sludge in local conditions. The chance is searching simply and natural ways of processing and exploitation stabilized sewage sludge in agriculture. Manure substrate have been obtained by composting waterless sewage sludge including rest plant biomass after closing 6–8 years period of filling liquid sewage sludge to the basin. Main attention was focused on exploitation of swamp plants for dewatering liquid sewage sludge and determination of influence sewage sludge on plants, intensity and course of evapotranspiration and design and setting of drying beds. On the base of determined ability of swamp plants evapotranspiration were edited suggestion solutions of design and operation sludge bed facilities in the conditions of small rural wastewater treatment plant.

scholarly journals Imbalanced Development and Economic Burden for Urban and Rural Wastewater Treatment in China—Discharge Limit Legislation

2018 ◽  
Vol 10 (8) ◽  
pp. 2597 ◽  
Author(s):  
Meishu Wang ◽  
Hui Gong
Keyword(s):  
Wastewater Treatment ◽  
Rural Development ◽  
Economic Burden ◽  
Rural Areas ◽  
Financial Burden ◽  
Urban Regions ◽  
Rural And Urban ◽  
Water Legislation ◽  
Urban Rural ◽  
Rural Wastewater

Water pollution control is a great challenge for China. Compared with urban regions, the wastewater treatment in rural areas is much undeveloped, which is highly related with the much delayed legislation for rural wastewater. Imbalanced urban-rural development and the economic burden of urban and rural wastewater treatment in China was investigated from the perspective of discharge limit legislation. For now, the national discharge limit for rural wastewater is still vacant, although the national discharge limit for urban wastewater had been released for more than ten years. Recently, local rural wastewater discharge limits from several provinces were released, however, based on quite different principles. Some categories emphasized environmental sensitivity with the discharge limit equal and were more strict than urban standards, while some focused on resource recovery for rural regions with loose discharge limits. This study compared the financial burden between rural and urban regions in 31 provinces under different discharge limit legislation conditions. It was revealed that the resources recovery category discharge principle helped to decrease the financial burden imbalance with a reduced Gini coefficient from 0.37 to 0.17. The reduced economic burden from the implementation of a suitably designed rural discharge limit promoted balancing the rural-urban gap and lowering uncertainties and risk of sustainable rural wastewater treatment. This study also revealed the urgency of rural water legislation and proposed development with a balanced financial burden for urban and rural residents under suitable discharge limits, providing a profound insight for environmental management with a focus on balanced urban-rural development for the policy-makers in developing countries.

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