Tongji University

Fuzhou Water Group Co., Ltd.

Zhenxin Shang

Chen Cai

Jia Liu

Kaiming Peng

Zhongqing Wei

Xiangfeng Huang

A monitoring method of dissolved greenhouse gases in wastewater includes: S1, collecting a wastewater sample, performing mud-water separation, and collecting a supernatant after the mud-water separation; S2, adding dilute sulfuric acid solution to the supernatant collected in a headspace vial to adjust pH of the supernatant to 1-4, and then tightening a cap of the headspace vial; S3, inverting the headspace vial, and checking whether there are air bubbles in the headspace vial; S4, injecting 5-10 mL of pure nitrogen into the headspace vial through a syringe, and discharging 5-10 mL of the wastewater sample through a conduit; S5, placing the headspace vial in a water bath constant temperature shaker, and shaking the headspace vial for 20-30 minutes; S6, extracting gases from an upper part of the headspace vial, and measuring concentrations of the gases; S7, quantitatively calculating concentrations of the dissolved greenhouse gases in the wastewater sample.

Growing community of inventors

Nanjing, China

Zhenxin Shang