Sludge bulking is a hard job in activated sludge treatment, especially in the treatment of high load waste water from petrochemical plant.
污泥膨胀是活性污泥法污水处理中的一个难题，尤其在处理高负荷的石化污水中。
In this paper, a new type of sludge bulking problem caused by high loading rate is described, the control measures for this kind of problem has been studied.
提出一类高负荷的丝状菌污泥膨胀现象，并对高负荷引起的污泥膨胀控制进行试验研究。
The experimental result has been revealed that the dissolved oxygen limiting is the main reason for high loading rate bulking problem.
试验结果表明高负荷引起的污泥膨胀是由于溶解氧限制所造成。
Under high organic loading condition, usually, the owing to the insufficient DO, bulking may occur, but, if DO concentration is increased, bulking will be controlled.
高负荷下，引起污泥膨胀的原因往往是DO浓度不足，而提高DO浓度则能使污泥膨胀得到控制。这一结果也解释了高有机负荷发生污泥膨胀的实质原因。
The results showed that alkali-activated fly-ash cementing material has good sulphuric acid resistance and low bulking factor and high drying shrinkage against ordinary Portland cement.
结果表明：与水泥相比，碱激发粉煤灰胶凝材料具有良好的抗硫酸侵蚀性、湿胀小、干缩大。
The utility model can keep the stabilization of the humidity in the steam in high temperature seasons, and enhances of quality of the forming of granulation materials and bulking materials.
本实用新型在高温季节中仍能保持蒸汽中的湿度稳定，提高颗粒料或膨化料成型的质量。
The utility model can keep the stabilization of the humidity in the steam in high temperature seasons, and enhances of quality of the forming of granulation materials and bulking materials.
本实用新型在高温季节中仍能保持蒸汽中的湿度稳定，提高颗粒料或膨化料成型的质量。
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