工业用水与废水
工業用水與廢水
공업용수여폐수
Industrial Water & Wastewater
2015年
5期
37-39
,共3页
电镀废水%含铬废水%工艺条件%混凝法
電鍍廢水%含鉻廢水%工藝條件%混凝法
전도폐수%함락폐수%공예조건%혼응법
electroplating wastewater%chromium-containing wastewater%process condition%coagulation
采用混凝沉淀工艺处理含铬废水,考察了还原反应pH值、还原剂投加量和反应时间对六价铬去除效果的影响,以及PAM投加量对混凝反应的影响,试验优化了还原反应和混凝反应条件,并将研究结果应用于实际含铬电镀废水处理。工程运行结果表明,六价铬还原反应的最佳条件为： pH值为2~3,六价铬与还原剂的质量比为1：5,反应时间为20 min；混凝剂PAM的最佳投加量为8 mg/L,出水中总铬的质量浓度低于0.005 mg/L。
採用混凝沉澱工藝處理含鉻廢水,攷察瞭還原反應pH值、還原劑投加量和反應時間對六價鉻去除效果的影響,以及PAM投加量對混凝反應的影響,試驗優化瞭還原反應和混凝反應條件,併將研究結果應用于實際含鉻電鍍廢水處理。工程運行結果錶明,六價鉻還原反應的最佳條件為： pH值為2~3,六價鉻與還原劑的質量比為1：5,反應時間為20 min；混凝劑PAM的最佳投加量為8 mg/L,齣水中總鉻的質量濃度低于0.005 mg/L。
채용혼응침정공예처리함락폐수,고찰료환원반응pH치、환원제투가량화반응시간대륙개락거제효과적영향,이급PAM투가량대혼응반응적영향,시험우화료환원반응화혼응반응조건,병장연구결과응용우실제함락전도폐수처리。공정운행결과표명,륙개락환원반응적최가조건위： pH치위2~3,륙개락여환원제적질량비위1：5,반응시간위20 min；혼응제PAM적최가투가량위8 mg/L,출수중총락적질량농도저우0.005 mg/L。
Using coagulation sedimentation process to treat chromium-containing wastewater, the influence of reductant dosage, pH value, and reaction time of the reduction on Cr6+ removal, as well as the effect of PAM dosage on coagulation, were investigated. The conditions of reduction and coagulation reaction were optimized through the test, and the research results were applied to treat actual chromium-containing electroplating wastewater. The results of the engineering operation showed that the optimal condition for Cr6+ reduction was as follows: the pH value was 2-3, the mass ratio of Cr6+ to reductant was 1 : 5, the reaction time was 20 min, the PAM dosage was 8 mg/L. After the treatment under the above condition, the mass concentration of total chromium in the effluent water was lower than 0.005 mg/L.
