abrasion磨损abrasive研磨剂、研磨的acceleratedgravitysettling加速重力沉降acclimatization驯化、环境适应性acidic酸的、酸性的、acidify使酸化、变酸acidogenic引起酸化的activatedcarbon活性炭activatedsludgeprocess活性污泥工艺adhesion附着力、胶粘adsorbate被吸附物adsorbent吸附剂adsorption吸附adsorptionisotherm吸附等温线advancedoxidation高级氧化Advancedoxidationprocess（AOPs）高级氧化工艺advancedtreatment高级处理advection水平对流aeratedlagoon曝气塘aerobic好氧的、需氧的affinity亲和力after-cooler二次冷却器、后冷却器agar琼脂aggregation聚合、集合体aging衰老、老化airdiffuser气体扩散器airlift气升泵airstripping空气吹脱、气提alcoholdistillation酒精蒸馏alga藻类、海藻alginate藻酸盐alignment定线、对准、成直线alkaline碱性的alkalinity碱度allowablegeometricsuctionheadofthepump安装高度allowablevacuumetrichead允许真空高度alum明矾aluminate铝酸盐aluminosilicate硅酸铝aluminumsulfate硫酸铝aminoacid氨基酸aminosugar氨基糖ammonia氨、氨水ammonium铵amino氨基的anion阴离子anaerobic厌氧的anaerobicdigestion厌氧消化anoxic缺氧的antacid中和酸性的、抗酸性anthracite无烟煤antibiotics抗生素、抗生学aperture孔、孔径、缝隙appliance器具用具approachvelocity行近流速appurtenances附属设备aquaclude不透水层aquatic水生的aquaticflora水生植物区系aqueduct输水管aquifer含水层Archimedean阿基米德的arid干旱的、贫瘠的aromatic芳族的、芬芳的arsenic砷artesian自流井asbestoscement石棉水泥ashpit灰坑assay化验assimilate吸收、同化atomicabsorptionspectrophotometry原子吸收分光谱测量atomizer喷雾器attrition磨耗、磨损augerpump螺旋泵authorise批准autotrophic自养的auxiliary辅助的
backsiphonage倒虹吸backwashing反冲洗bacteria细菌bacterium细菌bacteriological细菌学的bacteriophage噬菌体ballast整流器ballastedflocculentsettling加重絮凝沉淀baffle挡板ballastingagent加重剂barrier屏障、潜堰barium钡barometric大气压力的baseline基线basic基本的、碱性的batchreactor序批式反应器、间歇式反应器beltfilter带式滤
机bench-scale小型的（台架规模）benzenering苯环bicarbonate重碳酸盐bidet坐浴盆、净身盆bind凝固BOD（biochemicaloxygendemand）生化需氧量biodegradable生物可降解的biofilter生物滤池biologicaltreatment生物处理
