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Применить Всего найдено 2. Отображено 2.
02-05-2023 дата публикации

Treatment system and process for efficiently removing ammonia nitrogen in low-salt wastewater

Номер: CN116040869A
Автор: LIU ZICHENG, ZHAO XUANYING, YANG FENG, ZHANG YANGYANG, WANG WENWEN
Принадлежит:

The invention discloses a treatment system and process for efficiently removing ammonia nitrogen in low-salt wastewater, and belongs to the technical field of wastewater treatment for environmental protection, the treatment system comprises an electrocatalytic oxidation pond, an inlet water distribution pond, an electrodialysis device, a concentrated water intermediate pond and a fresh water intermediate pond; wherein the electrocatalytic oxidation pond provides an ammonia nitrogen removal reaction place and comprises a concentrated chamber, a first light chamber grid and a second light chamber grid. The process comprises the following steps: adjusting the pH value of the low-salt wastewater to be treated in an inlet water distribution tank, and feeding the low-salt wastewater into an electrodialysis device; mixing concentrated water produced by electrodialysis with electrode water, adjusting the water quality, and then feeding into a concentrated chamber of an electrocatalytic oxidation ...

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Номер записи: 1
04-07-2023 дата публикации

Dichloromethane-containing high-salinity wastewater treatment process

Номер: CN116375244A
Автор: LIU CAOMIN, ZHAO XUANYING, YANG FENG, DAI JIANJUN
Принадлежит:

The invention relates to the field of sewage treatment, and particularly discloses a dichloromethane-containing high-salt wastewater treatment process, the main process comprises air stripping, multi-effect evaporation and A/O biochemical treatment, dichloromethane in wastewater is separated and removed in advance through air stripping treatment, the influence of dichloromethane on subsequent biochemical treatment is avoided, and the treatment efficiency is improved. The obtained dichloromethane concentrated solution can further serve as a solvent, an extracting agent and other raw materials to be reused in production after being purified, then the wastewater is evaporated and concentrated through multi-effect evaporation, the biodegradability of the wastewater is improved while the organic matter content and salt content are reduced, finally, biochemical treatment is conducted through an A/O technology, technological parameters are optimized, the operation cost is reduced, and the method ...

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Номер записи: 2