wasanaethau hyn, ac eithrio taw. anfonir hwn atoch cyn pen saith diwrnod gwaith ar ôl i chi gofrestru. os ydych chi'n byw dramor, gall gymryd hyd at diwrnod i gyrraedd. rhowch eich cyfrif ar waith drwy fewngofnodi cyn pen diwrnod i'r dyddiad a nodir ar y llythyr. os na fyddwch yn gwneud hyn, bydd y cod...
level (maximum up to ) from cp (continuous polymer) plant, and converted into to cod by providing stripping column (steam operated), then after high cod water injecting to uasb (up flow anaerobic sludge blanketing) tower. where cod level of water comes down up to to cod and water transfer to the nd...