Iyintoni indima yeSodium Metabisulfite ekuNyangweni kwamanzi amdaka kwimizi-mveliso

1. I-sodium metabisulfite yi-agent yokunciphisa, esetyenziselwa ukunyanga amanzi amdaka aqukethe i-chromium kunyango lwamanzi amdaka.
2. Amanzi amdaka aqulathe iChromium kufuneka aphathwe ngokwahlukileyo ngokwemigangatho yesizwe, kwaye akanakukhutshelwa kwidama elidibeneyo kwaye i-hexavalent chromium concentration kufuneka ingabi ngaphezulu kwe-0.1
3. Ke ngoko, indawo yokulahla ye-sodium metabisulfite kumanzi amdaka aqulathe i-chromium ukuze kuncitshiswe i-chromium enehexavalent ukuya kwi-trivalent chromium kwaye emva koko ihlahle.