Tongji University

Opsmith Technologies Co., Ltd.

Sisi Chen

Bin Dong

Jun Gao

Mei Wang

Zuxin Xu

Bing Xue

Chun Lu

Renjie Chen

Xiangjuan Sun

Danni Shen

Zao Yang

Yifan Zeng

Mengke Cui

The present disclosure discloses a method for strengthening a biological manganese oxidation using a magnetic field and use thereof. The method includes steps of inoculating a manganese-oxidizing microorganism into a culture medium containing Mn, performing magnetization treatment in a culture process, and then collecting a biogenic manganese oxide. The method includes steps of performing a primary magnetic field treatment at a magnetic field intensity of 0.2-50 mT for 1-5 h when culturing is performed for 6-12 h, continuing culturing after the primary magnetization treatment, and performing magnetization treatment once every other 24 h for culture time of 72 h. A magnetic field is applied to accelerate an oxidation rate of a manganese-oxidizing microorganism to Mnand a biological manganese oxidation rate is respectively improved by 36.4% and 23.8% under an action of an alternating magnetic field or a constant magnetic field within 72 h.

Method for strengthening biological manganese oxidation using magnetic field and use thereof

A method for sludge dewatering using kitchen waste to synergistically enhance a coupling of an anaerobic biological acidification and a low-temperature hydrothermal of excess sludge is disclosed. The method includes the following steps: first, uniformly mixing the excess sludge from a sewage treatment plant and the kitchen waste for an anaerobic biological acidification reaction at 36.5-37.5° C. for 2-4 days; then, concentrating the acidified mixture by centrifugation at a speed of 3000-5000 rpm for 5-10 min; performing a low-temperature thermal hydrolysis treatment on a residue obtained after removing a supernatant for 15-30 min at 100-140° C.; and after the thermal hydrolysis treatment is finished, cooling and dewatering to obtain a dewatered sludge cake and a dewatered filtrate. The new method realizes high-efficiency sludge dewatering and innocuous utilization of dewatered filtrate and sludge cake without adding chemical reagents and effectively avoids generating hardly-degradable chemical oxygen demand.

Method for sludge dewatering using kitchen waste to synergistically enhance anaerobic biological acidification and low-temperature thermal hydrolysis of excess sludge

The present invention relates to a method for enhancing deep degradation of proteins in sludge. The method includes the following steps: an anaerobic digestion product of excess sludge as a substrate is treated by Van Soest's washing method to obtain the sludge free of easily degradable organics and containing degradation-resistant proteins; then, with the anaerobic digestion product of excess sludge as an inoculum and the sludge free of easily degradable organics and containing degradation-resistant proteins as a substrate, a first-stage microbial electrolytic cell coupled anaerobic digestion system is started for treatment to obtain a microbial mixture related to targeted degradation of the degradation-resistant proteins; with the microbial mixture related to targeted degradation of the degradation-resistant proteins as an inoculum and the anaerobic digestion product of excess sludge as a substrate, a second-stage microbial electrolytic cell coupled anaerobic digestion system is started to obtain the sludge with deeply degraded proteins.

Method for enhancing deep degradation of proteins in sludge

A Faraday rotator mirror, including: a polarizing beam splitter, a polarizing beam converging device made from birefringent crystal, a Faraday rotator, a reflecting mirror. In operation, light rays from an optical coupling element pass through the polarizing beam splitter, the polarizing beam converging device, the Faraday rotator, and the reflecting mirror, in that order, and then return back through the Faraday rotator, the polarizing beam converging device, and the polarizing beam splitter, in that order, and are output from the optical coupling element in reverse to the original incidence path.

Faraday rotator mirror

Growing community of inventors

Shanghai, China

Sisi Chen