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Title:
METHOD FOR TREATING HIGH AMMONIA-NITROGEN WASTEWATER OF THE COAL CHEMICAL INDUSTRY WITH REINFORCED SBR PROCESS POOL
Document Type and Number:
WIPO Patent Application WO/2020/133553
Kind Code:
A1
Abstract:
The present application belongs to the field of industrial wastewater treatments, and relates to a method for treating wastewater of the coal chemical industry, specifically a method for treating high ammonia-nitrogen wastewater of the coal chemical industry with a reinforced SBR process pool. The method involves (1) controlling and adjusting the indicators of water quality in an adjusting pool: an ammonia nitrogen concentration, a COD concentration, an alkalinity and a C:N ratio; (2) adjusting the dissolved oxygen degree, a high inlet water load, and sludge concentration of the SBR pool, wherein the sludge concentration is determined according to the water quality conditions of the high ammonia-nitrogen wastewater of the coal chemical industry and the season; (3) alternatively charging the SBR pool with water, using a sequence batch reactor, and flowing the effluent water back into the adjusting pool through a return pipe, wherein the amount of the water flowed back is determined according to the concentration of the high ammonia-nitrogen wastewater of the coal chemical industry; and (4) adjusting the inlet and outlet valves of a circulating water pump on the SBR pool, so as to adjust the mixing degree of sludge, water and oxygen in the pool and to adjust the dissolved oxygen efficiency.

Inventors:
ZHAO MEILI (CN)
QU TAO (CN)
WANG WEI (CN)
CHEN YONGXIAN (CN)
HAN JIA (CN)
KONG HUAN (CN)
JIANG NA (CN)
SUN XIUYING (CN)
Application Number:
CN2019/000245
Publication Date:
July 02, 2020
Filing Date:
December 12, 2019
Export Citation:
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Assignee:
YANKUANG GUOHONG CHEMICALS CO LTD (CN)
International Classes:
C02F3/12; C02F101/16
Foreign References:
CN109574213A2019-04-05
CN206940526U2018-01-30
CN104609659A2015-05-13
CN107879468A2018-04-06
US10399876B22019-09-03
CN103382051A2013-11-06
Attorney, Agent or Firm:
JINAN SHUNYUAN PATENT AGENCY CO., LTD. (CN)
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