Coking wastewater
Created on 05.14
A case of biological efficiency enhancement for coking wastewater of a certain coal and coke group company in Shanxi Province
- Project Overview
(1) Company Profile: State-owned coal chemical Industry Group
(2) Wastewater type: Coal coking wastewater treatment
(3) Wastewater treatment capacity: 1200m ³ /d
(4) Treatment process: Oil separation + air flotation + hydrolysis acidification + two-stage AO tank ditch + secondary sedimentation tank + coagulation sedimentation + Fenton reaction tank
(5) Customer demands: Eliminate biological toxicity and enhance the nitrification capacity of the biochemical tank
- Governance measures
The addition of the Qinggang ® series of highly efficient bacterial strains features dual high-efficiency characteristics: short acclimation time, strong pollutant removal ability, and the ability to quickly restore nitrifying bacterial communities.
(2) Conduct an overall review of the process parameters of the existing sewage system and provide theoretical and practical training to the on-site personnel.
Strain name | Specification | Annual consumption（kg/L） |
Qinggang®Ammonia-Nitrogen Removal Bacteria (Autotrophic) | ≥500mgNH3-N/L/h | 500L |
Qinggang® Biological Detoxification Bacteria | ≥200 billion cfu/ml | 300kg |
- Governance effect
Our company's high-efficiency nitrifying bacteria strains and detoxifying bacteria were added to supplement and detoxify the nitrifying bacteria in the system. Subsequently, after the data showed a downward trend, a gradient influent method was adopted to gradually increase the system's treatment load. After five days of commissioning, the daily treatment capacity of the system has reached the design standard, and the ammonia nitrogen effluent is more stable than before.
- Influent and effluent ammonia nitrogen
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