What are the symptoms of heavy metal poisoning in sewage?
The mechanisms of various heavy metal poisoning are different, the poisoning parts are different, and the symptoms are also different. So, what are the symptoms of heavy metal poisoning in sewage? Because heavy metals will cause irreversible changes in the structure of proteins, the protein's structure change function will be lost (enzymes in the body cannot catalyze chemical reactions, and carriers on the surface of cell membranes cannot transport nutrients and Excretion of metabolic waste, myosin and actin cannot complete muscle contraction). Therefore, the cells in the human body cannot obtain nutrition, eliminate waste and generate energy, the cell structure collapses and the function is lost, and the vital signs of the human body are prone to danger. Symptoms of different heavy metal poisoning. I. Cadmium poisoning (1) Acute poisoning: nausea, abdominal pain, vomiting, hemorrhagic gastroenteritis, liver and kidney necrosis and heart enlargement. Inhalation - Cadmium oxide can cause severe metal fumigation fever. Chest pain, headache, cough, dyspnea, fever, pulmonary edema, kidney and liver necrosis occurred 12 to 24 hours after exposure (2) Chronic poisoning: kidney diseases include low molecular weight proteinuria, diabetes, hypertension, cardiovascular disease and cancer. Inhalation Pulmonary fibrosis and kidney disease. II. Mercury poisoning (1) Acute poisoning: mainly caused by inhalation of human mercury vapor. Except for massive acute bronchitis, pneumonia, stomatitis, enteritis, fever, confusion, and dyspnea, they are generally asymptomatic. (2) Chronic poisoning: mainly affects the central nervous system, insomnia, shyness, memory loss, emotional instability, nervousness and loss of appetite. (3) Others: visual impairment, crystal opacity, etc. III. Manganese poisoning (1) Acute poisoning: Inhalation of manganese oxide dust may produce so-called metal fumigation fever or chemical pneumonia. Manganese oxide is usually produced by welding or cutting manganese-containing substances. Chills, fever, nausea, and cough may occur (2) Chronic poisoning: mainly leads to neurological and mental abnormalities, which can be divided into three stages: ① Initial stage - cognitive impairment and emotional distress, including loss of appetite, myalgia, nervousness, Restlessness, uncontrollable violence, insomnia, and decreased libido. ② Middle stage—uncontrollable crying and laughing, speech impairment, visual hallucinations, clumsy movements, and confusion. ③ Late stage - Difficulty walking, stiffness, inability to speak, trembling, similar to Parkinson's disease. IV. Nickel poisoning (1) Acute poisoning: ① Generally caused by inhalation of organic nickel, the poisoning symptoms are similar to carbon monoxide poisoning, but accompanied by elevated blood sugar and urine sugar; nausea, vomiting, headache, dizziness, insomnia and restlessness usually occur a couple of hours. Chest tightness such as pneumonia, difficulty breathing, coughing, palpitations, sweating, weakness, and blurred vision can then occur. ② Divalent inorganic nickel poisoning: caused by accidental drinking of nickel-contaminated drinking water or contaminated dialysis water. The symptoms are nausea, vomiting, headache, palpitations, weakness, diarrhea, shortness of breath, and coughing. (2) Chronic poisoning: Allergic dermatitis may occur in long-term skin contact. In addition, chronic respiratory disease, immune dysfunction, and cancer may occur. Generally engaged in the electroplating industry, the mechanisms of various heavy metal poisoning are different, the poisoning parts are different, and the symptoms are also different.