稀磷酸澄清槽泥浆泵改用单螺杆泵的实践

磷酸生产中输送稀磷酸澄清槽淤渣的泥浆泵，各厂的运行情况都不够理想。介绍了三种类型泥浆泵的运行情况，针对淤渣中会出现块结垢物影响泥浆泵长期运行，在单螺杆泵进料腔内设置破碎送料器后，取得了较理想的效果，从而提高了磷酸装置的运转率和磷得率。     

Performance of Sewage Sludge Treatment and Electricity Generation by Different Configuration Microbial Fuel Cells

This paper compared the degradation efficiency of sludge organic matters and electric-production by two typical microbial fuel cells——dual-chamber microbial fuel cell(DMFC)and single chamber air cathode microbial fuel cell(SAMFC),and the variations of sludge protein,polysaccharide and ammonia nitrogen within the systems were also investigated.The results showed that the concentration of sludge soluble chemical oxygen demand,protein and carbohydrate of DMFC are higher than these of SAMFC during the systems operation,while DMFC can achieve a better ammonia nitrogen removal than SAMFC.Under the same operation condition,the stable voltage output of DMFC and SAMFC is 0.61 V and 0.37 V;the maximum power density of DMFC and SAMFC is 2.79 W/m3and 1.25 W/m3;TCOD removal efficiency of DMFC and SAMFC is 34.14%and 28.63%for 12 d,respectively.Meanwhile,DMFC has a higher coulomb efficiency than SAMFC,but both are less than5%.The results showed that DMFC present a better performance on sludge degradation and electric-production.     

活性污泥生物吸附性能的研究

探讨了活性污泥生物吸附作用的影响因素。吸附性能随温度升高而降低,在20~30min之间,可达到吸附平衡,且温度越高,达到吸附平衡的时间越长;活性污泥对悬浮性有机物的吸附性能高于对溶解性和胶体性有机物的吸附;对高浓度污水吸附性能高于低浓度污水的吸附性能;抑制剂对污泥的吸附作用有影响。     

触变泥浆润滑套在沉井工程中的应用

论述触变泥浆润滑套在沉井工程中的应用及主要参数。     

不同污泥中5种重金属总量与形态分析

研究了吉化污水处理厂两个车间排放的污泥中Cu、Zn、Cr、Pb、Cd的含量及形态分布.研究结果表明:采自中和处理车间污泥样品中重金属含量由高到低的顺序是Zn>Cu>Cr>Pb>Cd;采自污泥处理车间污泥样品中重金属含量由高到低的顺序是Cu>Zn>Cr>Pb>Cd.污泥样品中Cu的含量最高,为8487.58 mg/kg;Cd的含量最低,为2.72 mg/kg.BCR形态分析结果表明,2种污泥中Cu主要以可氧化态和残渣态存在;Zn主要以可氧化态和可还原态存在;Cr主要以残渣态存在;Pb的形态分布较为均匀;Cd主要以可还原态存在.     

产电微生物对SMFC产电及降解性能的影响

目的在以含油污泥为阳极底泥的沉积型微生物燃料电池(SMFC)体系中,通过改变产电微生物种类和分布方式,探究产电微生物对SMFC产电及降解性能的影响。 方法通过采集输出电压、功率密度、表观内阻来检测石油去除率,比较了不同单菌-SMFC、不同混合菌-SMFC的产电性能和降解性能,考查了菌种分布对SMFC性能的影响。 结果在单菌-SMFC中,弗氏柠檬酸杆菌-SMFC的产电及降解性能均优于其他5种单菌构筑的SMFC;混合菌-SMFC的产电及降解性能较单菌-SMFC有较大提升,且其中蜡样芽孢杆菌+中间苍白杆菌-SMFC的产电及降解性能最优,输出电压可达到515.30 mV;菌种分布在阳极材料中和阳极底泥中都可以降解含油污泥中的有机物,但是菌种分布在阳极材料中更有利于SMFC产电性能及降解性能的发挥。 结论混合菌相对于单菌能够显著提升SMFC的产电及降解性能,而且菌种分布在阳极材料中更有益于SMFC产电性能及降解性能的发挥。      

Study on calculation method of surface subsidence about the dewatering concretion of clay influenced by mining

Under the condition of thick alluvia, there is biggish declination in predicting the coal mining subsidence by commonly strip design method compared with the practical observation, the sinkage is much smaller. Based on the method of the probability integral about coal mining subsidence calculation, discussed the surface subsidence calculation and deduced the formulas caused by the clay with dewatering. The results show that the clay dewatering has great impact on surface subsidence. Therefore, the clay dewatering on surface subsidence should not be overlooked.     

含铜和镍电镀污泥还原氨浸工艺及反应动力学分析

采用还原氨浸工艺实现电镀污泥中铜、镍的浸出。在20%(质量分数)氨水+0.3 mol/L (NH₄)₂CO₃+0.4 mol/L Na₂SO₃的浸出体系中,当固液比为1∶15,在70℃下浸出3h,铜、镍的浸出率别为95.84%和90.12%。反应动力学分析表明,氨-碳酸铵-亚硫酸钠体系浸出电镀污泥中铜、镍受界面传质和固体膜层扩散共同控制。     

宝钢不锈钢冷轧厂光平整液废水处理系统

介绍了一套完全崭新的工艺用于热镀锌机组排放的光整液及碳钢连退机组排放的平整液废水处理系统。该工艺采用均质调节池—pH中和罐—溶气气浮—冷却塔—EGSB—MBR装置。该工艺流程很好地解决了钢铁行业冷轧厂的光平整液废水处理这一大难题。     

Study on the hydrothermal drying technology of sewage sludge

Drying of sewage sludge is an effective way for treatment and utilization of sewage sludge,where reduction of energy consumption is one of the major technical challenges.So we experimentally investigated the possibility of the hydrothermal treatment.We have found that treatment of sewage sludge by saturated steam with the temperature of 190°C and pressure of 20 bar can dramatically improve the dehydration performance of the slurry like product.And the water content can be reduced down to about 55% by a mech...