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进水ph
    When the UASB influent pH is 4-5,COD is 8 900-12 100 mg/L and BOD is 4 500-5 000 mg/L,the volumetric COD loading rate reaches 10 kg/(m3·d) and COD removal rate is 85%. In the process,COD and BOD removal rate reaches 97.4% and 98.6%,the effluent COD and BOD is less than 300 mg/L and 30 mg/L.
    当进水pH4~5、COD8900~12100mg/L和BOD4500~5000mg/L时,UASB反应器COD容积负荷达到10kg/(m3.d),COD去除率达到85%,系统COD和BOD去除率可分别达到97.4%和98.6%,出水COD<300mg/L,BOD<30mg/L。
    When the influent pH is 11,the effluent pH can keep between 7~8and influent pH has no distinguished impact on removal efficiency of COD.
    在进水pH值11的条件下,出水的pH保持在在7~8之间,进水pH值对COD去除效果没有明显影响。
    With influent pH 3 and HRT 6h, theremoval rate of COD_(cr), volatile phenolic compounds and TP reached 66%, 60.2%,29% respectively. When pH was improved to 5.5 or higher, BOD/COD ratio increasedto 0.48 from 0.28.In the diffusion dialysis experiment, with distilled water/acid wastewater 1 andQ=600mL/h, 20% Cl—was separated from wastewater.
    当进水pH为3,停留时间为6h时,废水COD_(cr)、挥发酚、总磷去除率最高可达66%、60.2%、29%左右,出水pH提高到5.5以上,废水的BOD/COD从0.28提高到0.48左右。
    The experiments showed that the iron removal in the filter was mainly depended on biological oxidation other than contact oxidation when the influent pH was about 6.5 and DO was 2.5mg/L and the water temperature was 20℃.
    试验结果表明,在进水pH值为6.5,DO为2.5mg/L,温度为20℃,滤柱除铁机理主要是生物氧化除铁作用。
    Through the study on the influence of reaction time,influent pH value,re action temperature as well as the oxygen partial pressure to the pretreatment of production wastewa ter containing methyl chloride by we t oxi-dation process,the most suitable op eration conditions for the pretreatment are obtained:reaction time 60min. ,no pH value regulation to wastewater,reaction temperature 180℃,oxygen partial pressure 1.5MPa.
    通过研究反应时间、进水pH值、反应温度以及氧分压对湿式氧化法预处理甲基氯化物生产废水的影响,得出预处理的最适宜操作条件为:反应时间60min、不调节废水的pH值、反应温度180℃、氧分压1.5MPa。
    Under the experiment conditions, influent pH≤10.5 had hardly any effects on the activated sludge, which began to disperse and be inhibited under the conditions of influent pH≥11.1 and HRT<16h.
    试验条件下,进水pH≤10.5不会对活性污泥性能产生明显抑制; 进水pH≥11.1、水力停留时间(HRT)<16h时,活性污泥性能受到抑制,污泥出现离散,通过延长HRT可以减轻或消除抑制;
    The influence of reaction time,influent pH,reaction temperature and oxygen pressure on pretreatment of methyl chloride wastewater by wet air oxidation has been studied.
    研究了反应时间、进水pH、反应温度以及氧分压对湿式氧化法预处理甲基氯化物生产废水的影响。
    The influence of NH 3 N concentration in regeneration liquid,influent suspended solid concentration,influent pH and regeneration liquid dosage on the treatment effect was examined.
    考察了再生液中NH3 N浓度、进水NH3 N浓度、进水悬浮物浓度、进水pH、再生液用量等因素对处理效果的影响;
    When effluent pH is 5~8.5, the effluent manganese is < 0.1 mg/L. When pH is < 5, the effluent manganese will be increased sharply with the decrease of influent pH.
    当出水pH值为5~8.5时,出水含锰量<0.1mg/L,但当pH<5时,出水含锰量随进水pH值的降低而急剧增加;
    By orthogonal test, the best parameters of micro-electrolysis pre-treatment of coking wastewater are: influent COD2200~2400 mg/L, influent pH 3.0~3.2, HRT 55~65 min, volume ratio of Fe/C=1:1.5. Using the micro-electrolysis-SBR bio-treatment technology the effluent water can meet Grade I requirement of the National Discharge Standard (GB13456-1992) for discharging industrial wastewater.
    通过正交试验确定了微电解法预处理焦化废水的适宜参数为:进水COD2200~2400 mg/L,进水pH值约3.0~3.2,微电解水力停留时间HRT55~65 min,Fe/C(体积比)1:1.5. 应用微电解预处理-SBR深度处理焦化废水,可使出水达标排放(国家I级排放标准GB13456-92).
    The determined optimum process conditions are as follows:voltage 25~30 V,electrolysis time 120~180 min,influent pH 6.5~7.5.The removal rates of the effluent colority and COD are over 90% and 50% respectively.
    确定了处理废水的最佳工艺条件 :反应器槽电压 2 5~ 30V、电解时间 12 0~ 180min、进水 pH 6 5~ 7 5。
    The wastewater produced from Hongqiao Dye Plant, Jiangsu was treated with coagulation sedimentation-hydrolysis-contact oxidation-biocarbon facility. The design capacity was 1 200 m3/d. The water quality of influent pH, CODCr, BOD5 , SS and Color were 6.7, 495 mg/L, 129mg/L, 120 mg/L and 200 respectively.
    江苏虹桥染色有限公司采用混凝沉淀-水解-接触氧化-生物碳工艺处理染色废水,设计规模为1200m3/d,进水pH=6.70,CODCr=495mg/L,BOD5=129mg/L,SS=120mg/L,色度=200倍。
    With the increase of influent pH,the removal rate of COD decreases and the effluent pH increases little by little.
    随进水pH的增加,COD的去除率逐渐降低,出水pH增加。
    Under the condition that the influent pH value ranged 7.2-7.8 and the temperature was 30 ± 1 ℃,the ANAMMOX sludge was successfully cultivated after 142 d.
    在进水pH值为7.2~7.8,温度为30±1℃的条件下运行142d,成功培养出厌氧氨氧化污泥。
    The results of experiment indicated that the suitable range of influent pH value is from 7.6 to 8.8,and the COD removal rate is between 29 percent and 40 percent,and the BOD_5COD_(Cr) value of outflow is raised to 0.45 from 0.35 of inflow.
    试验结果表明,进水pH值适宜范围为7.6~8.8,COD去除率在29%~40%之间,出水BOD5/CODCr由进水的0.35左右提高到0.45左右,为印染废水的达标排放处理的水解pH条件提供参考。
    The influent pH was generally kept at 9.0 ~10.5,and the pH within the reactor remained stable at below 9.0.Therefore,the system could adapt to the impact of pH.
    进水pH稳定在9.0~10.5,而反应器的pH一直稳定在9.0以下,体系对pH变化造成的冲击比较适应.
    the effluent pH value with paper and cotton was 0.5~0.6 lower than the influent pH value; that with rice straw came to the second,being 0.3~0.2 lower than the influent pH; that with wood flour was about 0.1 only lower than the influent pH.
    四个反应器出水的pH值变化不大,纸张和棉花的出水pH值比进水pH值低0.5~0.6个单位,稻草次之,低0.2~0.3个单位,木屑只低0.1个各单位左右。
    So BOD5/COD Cr values from 0.21 to 0.30 broadening the range of influent pH adaptation,COD Cr removal rate reached 85.7%,BOD 5 removal rate reached 80.6%,and the effluent quality is stable.
    使BOD5/CODCr值由0.21提高到0.30,对进水pH适应范围变宽,CODCr去除率达到85.7%,BOD5去除率达到80.6%,且出水水质稳定。
    Effect of Influent pH on Biodegradation Behavior in Dye Wastewater Treatment by Anaerobic-aerobic Membrane Bioreactor
    A/O MBR处理印染废水中进水pH值对降解性能的影响
    Effect on Hydrolytic Decomposition for Pre-phase of Influent pH Value of Printing and Dying Wastewater
    折流式水解反应器处理印染前道废水进水pH的影响
 

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