ANJie,CHENTao,YINMin-min,et al.Case of a WWTP Upgrading Project in Pulping and Papermaking Industrial Park[J].China Water & Wastewater,2024,40(20):127-131.
Case of a WWTP Upgrading Project in Pulping and Papermaking Industrial Park
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第20期
Page:
127-131
Column:
Date of publication:
2024-10-17
- Keywords:
- pulping and papermaking wastewater; centralized management; upgrading; integrated technique
- Abstract:
- According to the requirement of environmental protection policy, the new and expanded pulping and papermaking enterprises should be located in the industrial park, meanwhile the sewage of them should be centrally treated. The leading industries of a pulping and papermaking industrial park in Henan Province are papermaking, paper product processing, packaging printing and related supporting industries. The sewage treatment process has been upgraded from “regulating tank, flocculation reaction sedimentation, air-water backwashing filter” to “fine grid, regulating tank, primary sedimentation tank, UASB tank, anaerobic sedimentation tank, oxidation ditch, OAO biological tank, secondary sedimentation tank, Fenton fluidized bed, triple sedimentation tank, charcoal clarifier (emergency), and rotary cylinder type precision filter”. The continuous operation results of six months indicate that even if the influent quality fluctuated greatly, the average removal rates of COD, BOD5, SS, NH3-N, TN, TP and chroma by the upgraded treatment process reach 98.8%, 98.9%, 99.3%, 87.8%, 64.0%, 80% and 91.4%, respectively. The effluent COD, NH3-N, and TP are less than 40 mg/L, 2 mg/L, and 0.4 mg/L, respectively. The other water quality indicators are better than the discharge limits of the Discharge Standard for Water Pollutants in Jialu River Basin (DB 41/908-2014). The upgrading investment of the project is 218.06 million yuan, and the comprehensive operating cost is 8.29 yuan/m3, which has certain reference significance for the wastewater treatment in pulping and papermaking industrial park.
Last Update:
2024-10-17