农药综合废水处理技术

农药厂家的综合废水通过选择合理的工艺路线 ,提高废水的可生化性 ,经过二级生化处理后的出水经絮凝沉降后达标排放。     

Process evaluation of an alternating aerobic-anoxic process applied in a sequencing batch reactor for nitrogen removal

In order to improve the nitrogen removal efficiency and save operational cost, the feasibility of the alternating aerobic-anoxic process (AAA process) applied in a sequencing batch reactor (SBR) system for nitrogen removal was investigated. Under sufficient influent alkalinity, the AAA process did not have an advantage over one aerobicanoxic (OAA) cycle on treatment efficiency because microorganisms had an adaptive stage at the alternating aerobic-anoxic transition, which would prolong the total cycling time. On the contrary, the AAA process made the system control more complicated. Under deficient influent alkalinity, when compared to OAA, the AAA process improved treatment efficiency and effluent quality with NH₄ ⁺-N in the effluent below the detection limit. In the nitrification, the average stoichiometric ratio between alkalinity consumption and ammonia oxidation is calculated to be 7.07 mg CaCO₃/mg NH₄ ⁺-N. In the denitrification, the average stoichiometric ratio between alkalinity production and NO₃ ⁻-N reduction is about 3.57 mg CaCO₃/mg NO₃ ⁻-N. As a result, half of the alkalinity previously consumed during the aerobic nitrification was recovered during the subsequent anoxic denitrification period. That was why the higher treatment efficiency in the AAA process was achieved without the supplement of bicarbonate alkalinity. If the lack of alkalinity in the influent was less than 1/3 of that needed, there is no need for external alkalinity addition and treatment efficiency was the same as that under sufficient influent alkalinity. Even if the lack of alkalinity in the influent was more than 1/3 of that needed, the AAA process was an optimal strategy because it reduced the external alkalinity addition and saved on operational cost. Translated from Acta Scientiae Circumstantiae, 2004, 24(4): 576–580 [译自: 环境科学学报]     

ASBR工艺的研究及应用

对厌氧序批式工艺(ASBR工艺)进行了系统分析。分析包括工艺过程、工艺特点、工艺的调控及在国内外的应用等。着重研究了该工艺的影响因素,如温度、碱度、进水时间与反应时间比、反应器尺寸等。分析研究表明,ASBR工艺是一种新型高效厌氧节能的工艺,有许多优点,具有广泛的应用前景,非常适合于处理我国复杂的废水水质。     

ASBR处理热水解污泥的启动试验研究

进行了中温、高温厌氧序批式反应器(ASBR)处理热水解污泥的启动试验,同时与中温连续流搅拌反应器(CSTR)进行对比,ASBR 启动期包括种泥驯化期、过渡期和稳态期 3 个阶段.启动过程中污泥固体物质在 ASBR 中不断积累而保持较高的固体停留时间(SRT),有助于提高处理效率.污泥中蛋白质生化降解产生的氨氮提高了体系的缓冲能力,pH值保持在 6.60~7.72之间.当水力停留时间(HRT)为 20d、容积负荷为 2.71kg COD/(m3d) 时,中温 ASBR、高温 ASBR 和中温 CSTR 的总 COD(TCOD)去除率分别为 67.71%、64.55%、60.25%.相应地, ·中温、高温 ASBR 的平均日产气量比中温 CSTR 分别提高 15%、10%.     

硝基苯降解菌在厌氧序批式反应器中处理硝基苯废水的应用

通过接种硝基苯降解菌于厌氧序批式反应器（ASBR），研究静态试验条件下和厌氧序批式工艺对硝基苯的降解规律，研究表明，应用生物强化技术处理硝基苯废水，具有很高的处理效率。     

序批式生物膜法的脱氮特性及机理研究

对序批式生物膜法工艺中所表现出来的脱氮特性进行了探讨，并提出了过量储存－SND脱氮作用机理。厌氧段脱氮主要靠生物膜对含碳氮有机物的过量储存作用；好氧段脱氮主要靠生物膜的SND作用，反硝化的有机碳源主要为生物膜中在厌氧段过量储存的有机碳源。     

船舶实施排空法海上更换压载水的安全性分析

就采用“排空法”海上更换压载水进行分析研究，并根据实船计算着重讨论此法在安全方面的问题与对策。     

水解酸化-序批式活性污泥法处理季戊四醇有机废水

在实验室研究的基础上 ,将水解酸化 序批式活性污泥 (HA SBR)处理工艺应用于季戊四醇生产废水治理工程中 ,运行结果表明 :CODCr去除率在 90 %以上 ,BOD5去除率在 85 %以上 ,所排废水各项指标达到国家排放标准。     

黔西北土法炼锌区典型植物体内重金属的积累研究

对黔西北土法炼锌导致的重金属严重污染地区生长茂盛的自然植被及其根部土壤进行了重金属分析测试。土壤重金属形态用连续提取法区分为有效态和强结合态,结果发现植物体内的重金属含量与土壤中有效态的重金属含量成正比。所分析的4种植物体内的Pb、Zn、Cd含量表现为Zn>Pb>Cd。接骨草(SambucusChinensis)和柳叶苦荬菜(Ixerisgracilis)在体内富集、运输重金属元素的能力很强,是对污染区生态重建非常有前景的植物。     

糟液废水处理工程综合效益实例分析

采用以调温上流式厌氧污泥床反应器（UASB） 序批式活性污泥法（SBR）为主体的联合生物处理工艺处理酿酒行业产生的糟液废水。该工艺可减少大量CODcr,BOD5超标的糟液废水的直接排放，还可产生大量沼气供综合利用，工艺技术先进，工程的综合效益较高。