制糖废水处理的工艺研究

摘要

The sugar industry produces a lot of waste water, treatment of the wastewater has become the main force to promote the development of sugar industry. Taking sugar wastewater from a company as an example, ABR anaerobic + aerobic process was used to treat sugar wastewater, and optimum process conditions were determined as follows: the inflow rate 10 000 t/d, influent COD less than 3 000 mg/L, hydraulic load of COD 1.5 kgCOD/(m3·d), dissolved oxygen in the biological contact oxidation pool 3 mg/L, pH 6.8~7.2. Under above conditions, good treatment effect could be obtained.%制糖行业产生的废水量大，处理制糖行业产生的污水，成为推动制糖行业发展的主要力量。以某公司的制糖废水为实例，选择ABR厌氧+好氧工艺，确定在此工艺在运行时的最佳工艺。结果表明：进水量维持在10000 t/d，进水中COD的含量不能超过3000 mg/L，COD的水力负荷控制在1.5 kgCOD/(m3·d)，生物接触氧化池的溶解氧调节在3 mg/L、污泥不需要回流、在常温操作，调节氧化池的pH值在6.8~7.2之间对废水有一个良好的处理效果。