The running result shows that when the influent COD is 1 800-2 200 mg/L,the effluent COD will be 160-300 mg/L,reaching II-class criteria specified in Integrated Wastewater Discharge Standard(GB 8978-1996).
Coagulation/hydrolytic acidification/aerobic movable bed bio-film process was used for surfactant wastewater treatment. The running result shows that in the process,the removal rate of COD,BOD_5,SS,LAS,and TCC-TCS is averaged respectively at 92.7%,95.3%,91.3%,96.9%,and 100%,with effluent quality up to II-class criteria specified in Integrated Wastewater Discharge Standard (GB 8978—1996).
The pilot test result showed that when the volume and load of HABR are controlled at 1～2 kgCOD/(m~3·d) in treatment of municipal wastewater,COD removal can come up to 70%～80%,and effluent COD and SS concentration can achieve II-grade criteria specified in <Integrated Wastewater Discharge Standard>(GB 8978—1996).
The average COD removal rate of the treatment process was high up to 90%. The mean BOD_5 of the effluent was about 36 mg/L,and its SS and CN~-concentrations were lower than 30 mg/L and 0.5 mg/L,respectively,which can meet the II series demand of the"Integrated wastewater discharge standard(GB 8978-1996)".
The experimental results show that under the conditions without adjusting the pH,with the amount of the fly ash of 0.05 g/mL,the reaction time of 60 min,and the temperature of 25 ℃,the efficiency for fly ash to remove arsenic from industrial wastewater is 87.0%,and the quality indexes of the wastewater after treatment conform with the integrated wastewater discharge standard(GB 8978-1996).
When inlet CODcr density of actual coking wastewater is 2214mg/L, retention period of hydrolytic acidification is 12h, aerobic aeration period is 18h and outlet CODcr density obtained from intermittent dynamic test is 172mg/L, the removing ratio of CODcr is up to 92.23%, satisfying comprehensive sewage effluent standard (GB8978-96).
当实际焦化废水进水 CODcr浓度为 2 2 14 m g/ L ,水解酸化停留时间12 h,好氧曝气时间 18h,间歇动态试验出水 CODcr浓度为 172 m g/ L 时 ,CODcr的去除率达 92 .2 3 % ,满足污水综合排放标准 (GB8978-96)的排放要求
Substituted benzene,volatile halogen hydrocarbon,ester do different degree of harm to human beings and aquatic biology. The paper limit concentration of toluene is 0.5 mg/L, chloroform is 1.0 mg/L in "The Comprehensive Sewage Discharge Standard"(GB8978-1996).
By considering the problem of serious pollution sewage increased in refinery in recent years, some measures are prosecuted, such as pre-treatment to reduce pollution, improving sewage disposal technology, and raising the capability of sewage treatment and some comprehensive sewage disposal measures are proposed.
Chemical fiber tail wastewater was treated by facultative anaerobe-PACT process, when the influent COD was 250~450mg/L,the effluent COD≤100mg/L and removal rate reached to over 80%; various indexes could meet the first class standard in the national Sewage Comprehensive Discharge Standard (GB8978-1996).
The slaughter wastewater was treated with circumgyrating sediment pool,bio-contact anaerobic pool and SBR biological aerobic reactor; the effluent COD lowered to 62.3mg/L from 1290～4140mg/L; various fouling indexes practically determined reached the second class discharge standard of Sewage Comprehensive Discharging Standard(GB8978-1996).
The experimental results demonstrated that when pulp comprehensive wastewater come with COD Cr of 3,100～3,460mg/L and BOD 5 of 1,020～1,420mg/L,after treatment,the water quality can meet the two stage emission standard of chemical fiber industry of “Sewage Comprehensive Emission Standard”(GB 8978 96).
The treated wastewater can meet the requirements of standard III of the comprehensive wastewater discharge standard(GB9878-1996) when the reaction time is 30 minutes at 300 ℃ or reaction time is 60 minutes at 280 ℃.
在300℃下反应30 m in或在280℃下反应60 m in,处理水可达到污水综合排放标准GB9878-1996的三级标准。
(3) Many time of experiments showed that the treated wastewater met the 3rd grade of Comprehensive Wastewater Discharge Standard (GB9878-1996, China) when reacting 30min under the temperature of 300℃ or reacting 1h under 280℃,
Under the reaction temperature 400℃,after 1 min, the treated wastewater meet the 3rd grade of Comprehensive Wastewater Discharge Standard,(GB9878-1996 China);
The experiment results showed that this process was effective for treating synthetic traditional Chinese medicine wastewater under the hydraulic load of 0.570 m3/(m~2·h)and the air/water ratio of 4∶1; the COD,SS and color in effluent,which averaged 80mg/L,44 mg/L and 35 dilution times,respectively,could satisfy the first-class criteria specified in the Comprehensive Wastewater Discharge Standard(GB8978-1996).
The experimental results demonstrated that when pulp comprehensive wastewater come with COD Cr of 3,100～3,460mg/L and BOD 5 of 1,020～1,420mg/L,after treatment,the water quality can meet the two stage emission standard of chemical fiber industry of “Sewage Comprehensive Emission Standard”(GB 8978 96).
In this paper, the harmful effect, source and conversion of nitrogen pollutionof water are briefly reviewed. A conclusion is obtained that ammonia in "Integra-ted Wastewater Discharge Standard" should be replaced with total nitrogen in orderto limit nitrogen discharge in wastewater and to achieve "Environmental QualityStandard for Surface Water". Nitrogen removal from wastewater can result inlimiting nitrogen discharge, and this process can be achieved by means of biologicalwastewater treatment, especially ...
Combining Xinjiang special arid environment with social economic pollutant factors, trying out to lay down standard of local comprchcncsivc sewage drainage in this area and carrying out licence insititution of water pollutant drainage, this paper introduces the practical cxpcrinencc.
This paper has reported that 10m3/day ni-ghtsoil from peblic toilets in urban area was disposed through lhr hypefthermal steriliza-ation a 55-60℃, 10 day anaerobic "digestion at 40-50℃and 126 day biostabilization ponds, to result in meeting the sanitary standard of nightsoil treatment ( GB 7958-87 ), the 1st class of the integrated standard of wastewater discharge ( GB 8787-88) and the water standard of fish rearing(TJ 35-79).No salmonella and less faecal coliforms were detected in the fish grown in the exp...
污水综合
integrated wastewater
查询“污水综合”译词为其他词的双语例句
查询“污水综合”译词为用户自定义的双语例句
其他
相关查询:
2008 CNKI－中国知网