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).
Two autotrophic rod sulfur-oxidizing strains (zw1 and zw2) were isolated from Pharmaceutical wastewater containing hydrogen sulfide gas,and were streaked and purified by repeated transfer to fresh solid medium on the plate.
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).
Two autotrophic rod sulfur-oxidizing strains (zw1 and zw2) were isolated from Pharmaceutical wastewater containing hydrogen sulfide gas,and were streaked and purified by repeated transfer to fresh solid medium on the plate.
Activated carbon was prepared from the sewage sludge of municipal wastewater treatment plant by chemical activation (activation reagent is ZnCl2) and was used for the adsorption of dye (reactive brilliant red K-2BP).
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Geochemistry characteristics and evaluation of the pollution extent of arsenic in wastewater irrigated soil in the North of Tianjin City
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The isolation and identification of high efficient biohydrogen production anaerobic bacteria are the important foundations for the fermented biohydrogen production process by anaerobic digesting organic wastewater.
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Development and application of some renovated technologies for municipal wastewater treatment in China
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Wastewater discharge, especially municipal wastewater discharge, and non-point pollution sources are becoming the major water pollution source and research focus.
Ribostamycin wastewater was treated by biological fluidized bed oxidation process.Influent COD_ci is 1,500 to 2,000 mg/L and BOD_5 is 900 to 1,000 mg/L. The CODcr elimination rate is above 90%, and BOD5 removal efficiency is more than 99%. After treating by biological fluidized-bed oxidation process. effluent CODcr is reduced to 100 mg/L. while BOD5 is minimized to 9 mg/L. CODcr load eliminating rate can rea- ch higher than 4 kg COD_cr/M~3. d.The spent granular activated carbon which has been used for...
The feasibility of anaerobic treatment of cotton pulp black liquor using a lab-scale UASB reactor-(about 15 liter) and its operational function were studied. Results were as follows:(1) COD conversion reached about 5C-60%, and BODS about 60-65%;(2) Loading of the UASB reator exceeded over 17 kgCOD/m3 · d, HRT, 0.7 day, and SRT, more than 30 days;(3) After a duration of about 150 days, anaerobic sludges in granular forms were obtained. Such granular sludge constituted a bed-blanket distribution through the h...
A new wastewater filtration technique using filter made of po-rous PE tubes was researched.Empirical equations for selecting the pore diameterof PE tubes,the relationship between specific cake resistance and pressure drop,the optimum pressure drop for various metal hydroxides,and the average filtration(?)apacity were examined.The calculated results coincided well with data measuredon production scale.
多孔 PE 管过滤机能达到原来过滤、脱水两步工序的要求,保证过滤精度,并使滤液中重金属离子达到国家规定的排放标准。文中介绍了选用多孔 PE 管平均孔径的经验公式,几种重金属氢氧化物的比阻与压差的关系式,最佳过滤压力计算公式,以及过滤机平均生产能力的计算公式。计算结果同实测结果相当符合。