公开(公告)号：US10301204B2

公开(公告)日：2019-05-28

申请号：US15543107

申请日：2016-01-12

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guanghao Chen ,  Feng Jiang ,  Ho Kwong Chui

IPC: C02F3/34 ,  C02F3/00 ,  C02F3/12 ,  C02F3/30 ,  C02F3/28 ,  C02F3/06 ,  C02F101/10

Abstract: A method of removing organic carbon in biological wastewater treatment includes the steps of: (a) oxidizing organic carbon to carbon dioxide with elemental sulfur as an electron carrier, and reducing the elemental sulfur to sulfide; (b) oxidizing the sulfide to elemental sulfur by recycled nitrate through controlling one or more of a recycling ratio to maintain an oxidation reduction potential (ORP) within the range of −360 mv to −420 mv, using an auto ORP controller; (c) recycling the elemental sulfur formed during oxidation of the sulfide back to the oxidation of the organic carbon; and (d) oxidizing ammonium to nitrate then partially recycled back for sulfide oxidation.

公开(公告)号：US09919940B2

公开(公告)日：2018-03-20

申请号：US15034663

申请日：2014-11-13

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guanghao Chen ,  Di Wu ,  Ho Kwong Chui

IPC: C02F3/30 ,  C02F3/34 ,  C02F103/08

CPC classification number: C02F3/308 ,  C02F3/345 ,  C02F2103/08

Abstract: Sewage treatment is performed by using Sulphur to facilitate electron flow. A first cycle uses a sulphur composition having sulphur and/or sulphur compounds to transfer electrons from organic carbon to oxygen, nitrate and nitrite, and to convert phosphorus-containing compounds to solid material, which is retained in sewage sludge. The sulphur is further used to perform denitrification of nitrogen compounds. A further cycle uses oxygen to oxidize any ammonia present to nitrate and/or nitrite.

公开(公告)号：US20160251247A1

公开(公告)日：2016-09-01

申请号：US15034663

申请日：2014-11-13

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guanghao Chen ,  Di Wu ,  Ho Kwong Chui

IPC: C02F3/30 ,  C02F3/34

CPC classification number: C02F3/308 ,  C02F3/345 ,  C02F2103/08

Abstract: Sewage treatment is performed by using Sulphur to facilitate electron flow. A first cycle uses a sulphur composition having sulphur and/or sulphur compounds to transfer electrons from organic carbon to oxygen, nitrate and nitrite, and to convert phosphorus-containing compounds to solid material, which is retained in sewage sludge. The sulphur is further used to perform denitrification of nitrogen compounds. A further cycle uses oxygen to oxidize any ammonia present to nitrate and/or nitrite.

Abstract translation: 通过使用硫进行污水处理以促进电子流动。 第一循环使用具有硫和/或硫化合物的硫组合物将电子从有机碳转移到氧，硝酸和亚硝酸盐，并将含磷化合物转化成固体物质，其保留在污水污泥中。 硫进一步用于氮化合物的脱氮。 另外的循环使用氧气氧化存在于硝酸盐和/或亚硝酸盐中的任何氨。

公开(公告)号：US20130264282A1

公开(公告)日：2013-10-10

申请号：US13994403

申请日：2011-12-16

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guanghao Chen ,  Peng Bai ,  Ho Kwong Chui

IPC: C02F3/30

CPC classification number: C02F3/30 ,  B01D63/082 ,  B01D2311/2688 ,  B01D2313/12 ,  B01D2313/26 ,  B01D2315/06 ,  C02F3/1273 ,  C02F3/201 ,  C02F3/302 ,  C02F2209/22 ,  C02F2303/20 ,  C02F2303/24 ,  Y02W10/15

Abstract: Wastewater influent is supplied to an aeration zone having a membrane module. Activated sludge is established in the aeration zone and an oxygen surplus is maintained by controlling a rate of oxygen supplied to the aeration zone. Wastewater influent is mixed with the activated sludge to form a first mixed liquid. A portion of the first mixed liquid is filtered to form a filtrate and unfiltered activated sludge. The unfiltered activated sludge is mixed with the activated sludge in the aeration zone to form the first mixed liquid. A portion of the first mixed liquid is transferred from the aeration zone to an anaerobic zone, and a second portion of first mixed liquid is mixed with activated sludge in the anaerobic zone to form a second mixed liquid. The second mixed liquid is recycled to the aerobic zone.

Abstract translation: 废水进入到具有膜组件的曝气区。 在曝气区建立活性污泥，通过控制供应给曝气区的氧气的比例来维持氧剩余。 废水进水与活性污泥混合形成第一混合液。 将一部分第一混合液体过滤以形成滤液和未过滤的活性污泥。 将未过滤的活性污泥与曝气区中的活性污泥混合以形成第一混合液体。 第一混合液的一部分从曝气区转移到厌氧区，第二混合液的第二部分与厌氧区中的活性污泥混合，形成第二混合液。 将第二混合液再循环至需氧区。