高盐环氧丙烷污水提标改造工艺研究

针对高盐环氧丙烷废水在经过“曝气+接触氧化+絮凝沉淀”等处理后,剩余COD已属于难降解COD,企业亟须提标改造,以满足COD<30 mg/L的排放要求,进行了以“臭氧+接触氧化”为主工艺路线的试验。试验结果表明,该工艺具有稳定性好、抗冲击能力强的特点,可稳定保证出水COD<30 mg/L。

高盐生物强化处理环氧丙烷生产废水试验

针对某企业环氧丙烷废水高温、高pH值、高盐、高有机氯化物的特点,生化处理存在效率低且工艺运行不稳定等问题,开展高盐生化工艺强化处理中试试验。研究结果表明:通过投加耐盐微生物菌剂,优化水解酸化-好氧-接触氧化组合工艺运行参数,形成高盐生物强化处理系统,在进水盐度为4%~6%、Cl-的质量浓度为20 000~30 000 mg/L、CODCr的质量浓度为1 200~1 400 mg/L的条件下,出水CODCr的质量浓度小于50 mg/L,TOC的质量浓度小于20 mg/L。高盐生化处理系统抗盐和抗负荷冲击能力强,运行稳定,满足企业提标改造技术要求。

高盐稠油污水达标外排强化处理中试研究

针对某油田稠油污水盐度高、有机成分复杂、可生化性低、毒性大等特征,开展"强化混凝预处理+高盐生物强化+臭氧-BAF深度净化"综合处理中试。结果表明:通过混凝药剂复配、耐盐微生物强化及不同工艺的协同优化,构建了稳定高效的高盐稠油污水强化处理系统;在进水TDS 28 500～31 200 mg/L、COD 821～875 mg/L、石油类44～48 mg/L、挥发酚43～56 mg/L、SS 133～146 mg/L条件下,处理出水COD 38～43 mg/L、石油类0.10～0.13 mg/L、挥发酚0.01～0.04 mg/L、SS 2～4 mg/L,外排水质远远满足辽宁省污水综合排放标准(DB21/1627—2008)一级要求,为稠油污水达标排放工程化设计提供了技术依据。

Formation and Transportation of High-Salinity Water Produced in Polynyas South of the St.Lawrence Island

The authors studied variations of temperature and salinity in seawater under sea ice using hydrologic data collected from polynyas south of the St.Lawrence Island during March of 2008 and 2009.The results indicate that the high-salinity water found during the cruises of 2008 and 2009 was due to the formation of polynyas.The salinity observed in 2008 was higher than that in 2009 as a result of higher salt production in 2008.The spatial distributions of high-salinity cores differed between the two cruises.In March 2008, a southeastward flow was formed under the persistent northerly wind in the observation region, which transported the high-salinity water produced by the polynyas to the southeast.The similar flow, however, did not exist in March 2009 because the northerly wind over the study area was interrupted by a southerly wind.Accordingly, the polynyas and the high-salinity water pro-duced by them existed for a short time.As a result, the high-salinity water in 2009 did not spread very far, and stayed within the polynyas.In addition, during the 2009 cruise, two stages of observations in the polynyas showed the core of high-salinity water was shifted to the southwest of the St.Lawrence Island.This result suggested that a southwestward flow might have existed in the area at the onset of the northerly wind, which was consistent with the alongshore and/or offshore flows caused by the northerly wind.

Simulation of Water Quality of Neijiang River Based on RMA4 Model

Using the RMA4 water quality model to simulate the water quality of Neijiang river in Zhenjiang, the result showed that： in the dry season the ranges of the concentration of various pollutants simulation of Neijiang were BOD5 3.2-5.2 mg/L, CODMn 4.7-6.8 mg/L, NH3-N 0.46-1.8 mg/L, TP 0.23-0.48 mg/L, and in the rainy period, the ranges of the concentration of various pollutants simulation of Neijiang were BOD5 0.69-0.73 mg/L, CODM, 1.9-2.3 mg/L, NH3-N 0.25-0.38 mg/L, TP 0.14-0.17 mg/L.These simulated values were closed to the monitoring values of pollution concentrations of Neijiang, which indicated that RMA4 was certain practical in the river water quality simulation, and simulation results have a certain degree of reliability, and it provides a scientific planning and management method for the river pollution control.

海上油田高盐废液处置技术方向探讨

目前海上平台产生的高盐废液,按照规定需要进行达标排放处置,但是由于其含盐高、有机物高等问题,与传统工业废水处置相差较大,因此导致其处置波动较大、难度高。通过对高盐废液处置流程的系统分析,不同技术的工艺组合、处置技术的稳定性、结晶盐处置去向等均对高盐废液处置具有影响作用,本次主要针工艺组合、结晶盐出处进行讨论,以及结合目前处置状况探讨高盐废液处置影响因素。