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  • Food & Beverage Industry Wastewater Treatment
    IntroductionWater is widely used in the food and beverage industry, resulting in a large amount of wastewater. The generated wastewater needs to undergo a series of treatments to meet the requirements of reuse or discharge, in order to reduce costs and protect the environment. Pretreatment system is   Read More>
  • Application of PH Value in Wastewater Treatment
    This article introduces one of the relevant indicators of wastewater treatment: pH value, from the concept of pH value to the importance of controlling pH value in wastewater treatment and the influencing factors and control methods of pH value in different wastewater treatment stages.   Read More>
  • Dissolved air flotation technology for the paper mills
    The pulping and papermaking process requires a large amount of production water. The wastewater generated by bleaching agents, fillers, and their reaction products are all pulping and papermaking wastewater. The primary sources of wastewater are the cooking waste liquid produced during the pulping and cooking process, the mid-stage wastewater produced during the middle stages of the pulping process (washing, screening, bleaching, and beating), and the paper machine white water produced during the papermaking process.   Read More>
  • Case Studies-Pilot Test Study on Deep Treatment of Printing And Dyeing Wastewater
    The shallow flotation-ozone-BAF combined process was used to carry out a pilot test on the effluent from the secondary sedimentation tank after biochemical treatment to provide reference data for the actual application of the process in the later upgrading and transformation project. The influent was the effluent from the secondary sedimentation tank, and the designed water volume was 50 m3/d. The operation results showed that under the conditions of 1350 mg/L polyferric dosing, 120 mg/L decolorant dosing, and 40 mg/L ozone dosing, the average total removal rates of COD and chromaticity were 65% and 80,% respectively. All effluent indicators met the direct emission limits of the "Discharge Standard of Water Pollutants for Textile Dyeing and Finishing Industry" (GB 4287-2012).   Read More>
  • Case Studies-Shallow Air Flotation Process for Treating Recycled Paper Wastewater
    Nantong X Paper Co., Ltd. is located in Nantong City, Jiangsu Province. It is a papermaking company that uses recycled paper as raw material. During the production process, the daily discharge of wastewater is 8,000 to 10,000 m3. The recycled paper of the company is mainly made of waste newspapers, waste board paper and waste book and magazine paper.
    When the optimal dosage of PAC and PAM in the shallow flotation section is controlled at 250 mg/L and 10 mg/L respectively, the SS removal rate can reach 94.56%, and the COD removal rate can reach 45.32%
      Read More>
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