GAS PRODUCTION AND LEACHATE PROPERTIES OF MUNICIPAL SOLID WASTE WITH CONTINUOUS INJECTION OF CONCENTRATED NF LEACHATE

YANG Yiqing; ZHANG Yuxiang; ZHANG Yufei; LI Yaohuang; WU Mingyu; ZHANG Nan; CHEN Xiaoqiang

doi:10.13205/j.hjgc.202303020

Volume 41 Issue 3

Mar. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(3): 148-154

YANG Yiqing, ZHANG Yuxiang, ZHANG Yufei, LI Yaohuang, WU Mingyu, ZHANG Nan, CHEN Xiaoqiang. GAS PRODUCTION AND LEACHATE PROPERTIES OF MUNICIPAL SOLID WASTE WITH CONTINUOUS INJECTION OF CONCENTRATED NF LEACHATE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 148-154. doi: 10.13205/j.hjgc.202303020

Citation:

YANG Yiqing, ZHANG Yuxiang, ZHANG Yufei, LI Yaohuang, WU Mingyu, ZHANG Nan, CHEN Xiaoqiang. GAS PRODUCTION AND LEACHATE PROPERTIES OF MUNICIPAL SOLID WASTE WITH CONTINUOUS INJECTION OF CONCENTRATED NF LEACHATE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 148-154. doi: 10.13205/j.hjgc.202303020

Citation:

YANG Yiqing, ZHANG Yuxiang, ZHANG Yufei, LI Yaohuang, WU Mingyu, ZHANG Nan, CHEN Xiaoqiang. GAS PRODUCTION AND LEACHATE PROPERTIES OF MUNICIPAL SOLID WASTE WITH CONTINUOUS INJECTION OF CONCENTRATED NF LEACHATE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 148-154. doi: 10.13205/j.hjgc.202303020

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GAS PRODUCTION AND LEACHATE PROPERTIES OF MUNICIPAL SOLID WASTE WITH CONTINUOUS INJECTION OF CONCENTRATED NF LEACHATE

doi: 10.13205/j.hjgc.202303020

1. Guangzhou Environmental Protection Investment Group Co., Ltd, Guangzhou 510030, China;
2. Key Laboratory of Soft Soils and Geo-environmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310058, China;
3. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
4. GZEPI Environmental Service Co., Ltd, Guangzhou 514000, China

Received Date: 2022-08-29
Available Online: 2023-05-26
Publish Date: 2023-03-01

Abstract

Abstract

For most landfills, membrane filtration has become a common method for leachate treatment. The filtered concentrated leachate is usually recirculated back to the landfill for such operation is convenient, of low investment and running cost. However, concentrated leachate has characteristics of high salt and poor degradability, which might affect landfill gas production and the effluent quality of leachate after injection. In this study, the nanofiltration concentrate was periodically reinjected into simulating bioreactors filled with waste samples of high/low organic content collected from the landfill site. And then the methanogenesis, odor gas and leachate quality were monitored. The experimental results showed that compared with the injection of water (blank and control), the reinjection of concentrated liquid had an inhibitory effect on methanogenesis process, and the inhibition for low organic waste was stronger. After the injection of the concentrated leachate, the release of ammonia and hydrogen sulfide became stronger. The odor gases were mainly released in rapid methanogenesis phase and the methanogenic attenuation phase. With the increase of the reinjection cycles, the reinjection of concentrated leachate showed good removal effect on COD, BOD₅, ammonia nitrogen, total nitrogen and oil in the effluent, but it also led to the rise of salt concentration in the effluent, even higher than the original concentrated leachate.
- concentrated leachate,
- municipal solid waste,
- reinjection,
- methane,
- odor gas,
- salt concentration

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References(20)

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