共查询到17条相似文献，搜索用时 562 毫秒
1.
综述了好氧颗粒污泥颗粒化研究进展及好氧颗粒污泥处理技术在废水生物处理中的应用．着重讨论了好氧颗粒污泥的形成机理,分析了好氧颗粒污泥培养过程中的影响因素,以及好氧颗粒污泥技术在废水生物处理和工程应用中的研究进展．好氧颗粒污泥的形成、发展和成熟过程可分为5个不同阶段,污泥颗粒化过程取决于基质组成与负荷、适当的水力选择压和工艺操作参数等因素． 相似文献
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杨国靖 《浙江农村技术师范专科学校学报》2008,21(2):99-102
结合近年来国内外好氧颗粒污泥技术的最新研究成果,对好氧颗粒污泥的形成过程及形成机理进行了探讨和研究．研究表明好氧颗粒污泥的形成是一个包含物理、化学和生物作用的多阶段过程,取决于废水组成及操作条件的选择．同时,对其未来的研究和发展趋势作了展望. 相似文献
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《西安文理学院学报》2015,(1)
综述了无机复合絮凝剂在焦化废水处理中的应用情况.无机复合絮凝剂在焦化废水处理中主要集中应用在预处理和深度处理阶段,研究多从絮凝剂投加量、废水p H值、絮凝时间及搅拌速度等方面入手,侧重于单因素对焦化废水处理效果的影响,缺少对絮凝剂制备工艺的优化及各因素间的交互影响研究.文章在阐述国内外已有研究成果基础上,从絮凝剂制备工艺、因素间的交互作用方面展望焦化废水处理中无机复合絮凝剂应用研究方向和前景. 相似文献
4.
污泥若经过一定处理后会具有很高的资源性和经济价值.通过自制实验装置对污水处理厂处理后污泥进行好氧发酵堆肥,并对堆肥过程中的主要参数进行适当控制,研究出具有符合农用资源化条件的污泥肥料. 相似文献
5.
剩余污泥好氧减量实验与经济可行性分析 总被引：1，自引：0，他引：1
通过序批式试验,检测剩余污泥在不同温度条件下（25℃、35℃、45℃）,好氧消化减量反应前后污泥的沉降性、体积和质量的变化;研究污泥在相应条件下消化减量效率及能耗;对比污泥消化减量的其它方法,对剩余污泥高温好氧消化减量的经济可行性进行分析。通过本课题的研究后发现：污水厂剩余污泥通过好氧消化减量处理后污泥的体积与质量大幅度减少,与直接将剩余污泥运输填埋处理方法相比,该方法能够大幅度降低污泥处置成本,具有显著的经济优势。 相似文献
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为了快速培养出能同时去除生活污水中化学需氧量(COD)和氮的微氧颗粒污泥,采用膨胀颗粒污泥床(EGSB)反应器接种污水处理厂剩余污泥,研究了微氧颗粒污泥的培养过程以及稳定运行条件下供氧量对处理效果和污泥性能的影响。结果表明,水力停留时间(HRT)为6h,微氧颗粒污泥的成功培养仅需1个月;供氧速率在2.83.2gO2/d,COD,NH3-N和总氮(TN)的去除率最高分别可达91%,85%和81%,脱氮速率达1.7gN/d,出水水质最佳;成熟的微氧颗粒污泥粒径集中在0.453.2gO2/d,COD,NH3-N和总氮(TN)的去除率最高分别可达91%,85%和81%,脱氮速率达1.7gN/d,出水水质最佳;成熟的微氧颗粒污泥粒径集中在0.452mm,当供氧速率低于2.3gO2/d时,颗粒污泥结构致密,供氧速率在2.32mm,当供氧速率低于2.3gO2/d时,颗粒污泥结构致密,供氧速率在2.33.2gO2/d时,污泥性能稳定,供氧速率增加到3.2gO2/d时,污泥沉降性能下降,并出现颗粒解体和丝状菌生长优势。 相似文献
8.
从当前污泥处理和处置在环境和经济方面存在的问题出发,阐明了研究污泥减量技术的紧迫性.根据污泥减量技术的原理,将污泥减量技术主要分为溶胞法和生物法.介绍了生物法中的解偶联技术的原理及解偶联剂在污泥减量中的应用. 相似文献
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近20年来发展起来的人工湿地,在污废水处理方面取得了显著的生态效益、经济效益和社会效益.结合人工湿地处理工艺特点和垃圾渗滤液特征,简要介绍人工湿地净化渗滤液的机理、处理效率和优缺点,并针对人工湿地在处理渗滤液方面存在的问题,提出了减缓措施.为人工湿地在垃圾渗滤液处理中的应用提供借鉴. 相似文献
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微氧颗粒污泥工艺能够同时进行好氧氧化和厌氧还原过程,是处理五氯酚（pentachloro-phenol,PCP）的理想方法。对微氧颗粒污泥降解PCP限制性生态因子pH的作用规律进行了研究。实验结果表明,在pH值在6.7-7.5范围,PCP和CODCr有较高的去除率,产气量较高,出水氯酚浓度达到较低的水平。而pH值低于6.7或高于7.5,PCP和CODCr去除率降低,且产生低氯代酚的积累。 相似文献
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汪志涛 《襄樊职业技术学院学报》2013,(1):20-22
中小型城市污水厂污泥重金属含量低、产量小。充分利用本地丰富的花生壳废物资源与污泥混合。采用高温好氧堆肥技术,探讨一种适合中小型污水厂污泥处理高效、低能耗的堆肥工艺。堆肥成品符合《城镇污水处理厂污泥处置园林绿化用泥质GB／T23486—2009））各项参数,适用于园林绿化中的中性和碱性土壤。 相似文献
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INTRODUCTION Coking wastewater is generated in the produc- tion of coke, coal gas, tar and other coke by-products The coking wastewater includes inorganic pollutants such as ammonia, cyanogen, sulfocyan, heterocycle compounds and polycyclic aromatic compounds such as phenol, oils, naphthalene, pyridine, quinoline and anthracites, which are difficult to biodegradation under aerobic conditions (Ganczarczyk, 1972). Dis- charge of coking wastewater to the environment may cause severe contamin… 相似文献
13.
A sequencing batch reactor (SBR) seeded with activated sludge was established for landfill leachate treatment. Small bio-aggregates
began to appear after 40-d operation, and gradually changed to mature aerobic granules, with a mean size of 0.36–0.60 mm.
Their sludge volume index at 5 min (SVI5 min), mixed liquor volatile suspended solids (MLVSS), and wet density were around 35 ml/g, 3.4 g/L, and 1.062 g/cm3, respectively. The settling velocities of the granules in distilled water ranged from 0.3 to 1.3 cm/s, which were faster
than those in landfill leachate with a salt content of 1.4% (w/v), and also slightly faster than those predicted by Stokes’
law for porous but impermeable particles. Microbial community evolution during the granulation process and stages under different
nitrogen loading rates (NLRs) were monitored and analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis
(PCR-DGGE), cloning, and sequencing of 16S ribosomal RNA (rRNA) fragments. Results revealed that some primary and dominant
communities in inoculating activated sludge died out gradually; while a few common bacteria, inhabiting soils, municipal wastewater,
or activated sludge systems, dominated in the SBR system throughout. In addition, some other dominant species, associated
with the aerobic granulation process, were thought to play a significant role in the formation and growth of aerobic granular
sludge. During the stable operation time under low NLR, a few species were present in abundance, and may have been responsible
for the high organic removal efficiency at this time. 相似文献
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陈红 《浙江大学学报(A卷英文版)》2004,5(6):727-732
Specific ATP content of volatile solids was measured to characterize the sludge activity in a sequential anaerobic/aerobic wastewater treatment system, with an upflow anaerobic sludge blanket (UASB) reactor and a three-phase aerobic fluidized bed (AFB) reactor. The wastewater COD level was 2000(3000 mg/L in simulation of real textile wastewater. The ATP content and the specific ATP contents of volatile solids at different heights of the UASB reactor and those of the suspended and immobilized biomass in the AFB reactor were measured. In the UASB reactor, the maximum value of specific ATP (0.85 mg ATP/g VS) was obtained at a hydraulic retention time (HRT) 7.14 h in the blanket solution. In the AFB reactor, the specific ATP content of suspended biomass was higher than that of immobilized biomass and increased with hydraulic retention time reaching a maximum value of 1.6 mg ATP/g VS at hydraulic retention time 4.35 h. The ATP content of anaerobes in the UASB effluent declined rapidly under aerobic conditions following a 2nd-order kinetic model. 相似文献
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INTRODUCTION limiting conditions, obligatory aerobic and an- aerobic bacteria will survive in a mixed culture Sequential anaerobic/aerobic wastewater treat- (Gerritse et al., 1992). Little is know about thement has received increasing attention for effective change in the activity of anaerobic bacteria whennutrient removal, enhanced de… 相似文献
16.
阐述三峡库区城市污水厂污泥的理化性质及特点,综述了城市污水厂污泥处理的现状.通过对污泥减量化和无害化后处理主要工艺比较和分析,提出了应在减量化、稳定化、无害化的前提下解决三峡库区污泥的出路问题. 相似文献
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通过实验研究及工程验证表明,采用浓缩活性污泥回流替代传统回流方式后,虽然污水厂处理效率略有下降,但仍能满足国家排放标准,表明在确保污水厂良性运行前提下,浓缩活性污泥回流运行措施用于中小型污水处理厂节能降耗是可行的。 相似文献