5. Environmental standards
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration 0.3mg/m3 (HCN) [Paper]
China (GB5749-85) live drink water quality standards 0.05mg / L (cyanide)
China (GB5048-92), irrigation water quality standards for water and dry vegetables : 0.5 mg / L (cyanide)
China (GB / T14848-93) groundwater quality standards (cyanide, mg / L) Class I and Class III Class II Class IV Class V
0.001 0.01 0.05 0.1> 0.1
China (GB11607-98) fishing water quality standard 0.005 mg / L (cyanide)
China (GHZB1-1999), surface water quality standard (total cyanide, mg / L) Class I and Class III Class II Class IV Class V
0.005 0.05 (fisheries 0.005) 0.2 (fisheries 0.005) 0.2 0.2
China (3097-1997-1997) water quality standards (cyanide, mg / L) one category .005; the second category .005; the third category 0.10; the fourth category 0.20
China (GB8978-1996) sewage discharge standards (cyanide total), a two 0.5mg/L
0.5mg/L
3 1.0 mg / L
China (GB5058-1996), solid waste leaching toxic identification standard value 1.0 mg / L (cyanide)

6. Emergency treatment and disposal methods
a spill contingency measures

of leakage must be handled as wearing gas masks and gloves, So, a lot down to the water. Join NaClO or excessive bleaching powder, placed for 24 hours, all confirmed cyanide decomposition, diluted Add to the wastewater system. The contaminated area with bleach solution or NaClO Baptist-24 hours later, with plenty of water rinse, Add Water Wastewater System unified handling. Right HCN gas shall be sent to the ventilation hood or gas into sodium carbonate solution, with the same amount of NaClO to 10-6 mol / L NaOH and sewage into the wastewater system so unified handling.

two protective measures

respiratory protection : possible exposure to toxic, must wear headgear electric powered air-purifying respirators and dust. Emergency rescue or evacuation, it is recommended to wear self-contained breathing apparatus.
eye protection : Respiratory Protection has been protective.
physical protection : Cruise-wear protective clothing 52,400.
hand protection : Wear rubber gloves.
other : work site prohibit smoking, eating and drinking. Work to complete, thorough cleansing. Separate storage of toxic pollution by the clothes, washed standby. Workshops should be equipped with first aid equipment and medicines. Workers should learn how to help themselves and mutual aid.

three, and emergency measures

contact with the skin : immediately stripped of contaminated clothing, with the flow of water or 5% Thiosulfate Solution thoroughly washed at least 20 minutes for medical treatment.
eye contact : immediately filed eyelid, with a large number of mobile water or saline thoroughly washed at least 15 minutes. Medical treatment.
Inhalation : rapidly from the scene to fresh air. To keep the airway patency. If breathing is difficult, give oxygen. Respiratory heartbeat stop immediately mouth (not to use oral counterparts) and thoracic cardiac massage for. To inhalation isoamyl nitrite and medical treatment. Fresh into
: warm water to drink enough, the symptoms, using 1:5000 potassium permanganate or 5% sodium thiosulfate solution gastric lavage. Medical treatment.

fire fighting methods : This Unburning. When fire rescue as commodities, packaging to prevent breakage caused environmental pollution. Firefighters wearing gas masks, body wear firefighting suits. Extinguishant : dry, sandy soil. Prohibit the use of carbon dioxide and acid-base fire extinguishant.