干旱区生态环境知识资源中心(Arid): Assessing groundwater recharge rates, water quality changes, and agricultural impacts of large-scale water recycling

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DOI	10.1016/j.scitotenv.2023.162869
	Assessing groundwater recharge rates, water quality changes, and agricultural impacts of large-scale water recycling
	Verma, Kavita; Manisha, Manjari; Santrupt, R. M.; Anirudha, T. P.; Goswami, Shubham; Sekhar, M.; Ramesh, N.; Kumar, M. S. Mohan; Chanakya, H. N.; Rao, Lakshminarayana
通讯作者	Verma, K
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	877
英文摘要	The over-exploitation and insufficient replenishment of groundwater (GW) have resulted in a pressing need to con-serve freshwater and reuse of treated wastewater. To address this issue, the Government of Karnataka launched a large-scale recycling (440 million liters/day) scheme to indirectly recharge GW using secondary treated municipal wastewater (STW) in drought-prone areas of Kolar district in southern India. This recycling employs soil aquifer treat-ment (SAT) technology, which involves filling surface run-off tanks with STW that intentionally infiltrate and recharge aquifers. This study quantifies the impact of STW recycling on GW recharge rates, levels, and quality in the crystalline aquifers of peninsular India. The study area is characterized by hard rock aquifers with fractured gneiss, granites, schists, and highly fractured weathered rocks. The agricultural impacts of the improved GW table are also quantified by comparing areas receiving STW to those not receiving it, and changes before and after STW recycling were mea-sured. The AMBHAS_1D model was used to estimate the recharge rates and showed a tenfold increase in daily recharge rates, resulting in a significant increase in the GW levels. The results indicate that the surface water in the rejuvenated tanks meets the country's stringent water discharge standards for STW. The GW levels of the studied boreholes in-creased by 58-73 %, and the GW quality improved significantly, turning hard water into soft water. Land use land cover studies confirmed an increase in the number of water bodies, trees, and cultivated land. The availability of GW significantly improved agricultural productivity (11-42 %), milk productivity (33 %), and fish productivity (341 %). The study's outcomes are expected to serve as a role model for the rest of Indian metro cities and demonstrate the potential of reusing STW to achieve a circular economy and a water-resilient system.
英文关键词	AMBHAS_1D model Indirect groundwater recharge Recharge rates Semi -arid areas Treated wastewater reuse Water quality
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000964369100001
WOS关键词	MANAGED AQUIFER RECHARGE ; TREATED WASTE-WATER ; SUPPORT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398520
推荐引用方式 GB/T 7714	Verma, Kavita,Manisha, Manjari,Santrupt, R. M.,et al. Assessing groundwater recharge rates, water quality changes, and agricultural impacts of large-scale water recycling[J],2023,877.
APA	Verma, Kavita.,Manisha, Manjari.,Santrupt, R. M..,Anirudha, T. P..,Goswami, Shubham.,...&Rao, Lakshminarayana.(2023).Assessing groundwater recharge rates, water quality changes, and agricultural impacts of large-scale water recycling.SCIENCE OF THE TOTAL ENVIRONMENT,877.
MLA	Verma, Kavita,et al."Assessing groundwater recharge rates, water quality changes, and agricultural impacts of large-scale water recycling".SCIENCE OF THE TOTAL ENVIRONMENT 877(2023).