One, eliminate the water sources, guarantee hygiene and safety of the drinking water.

1、Repair the damaged drinking water facilities be promptly after the flood, and have a comprehensive and thorough disinfection work before use it.

2、The drawn wells must be cleared, washed and disinfected. Firstly, get the wells dry, remove the sludge in it, washed the wall and the bottom with clean water, and then remove the sewage. After the wells naturally seepage to the normal level, have it disinfection by super-chlorine. The dosage of the bleaching powder could be measured according to the volume of the well water, account for 25 ~ 50 g available chlorine / tons of water, after soaking 12 to 24 hours, pulled out the water in the well; it can also splash 300 ml ~ 500 ml bleaching powder solution (100-fold dilution) per square meter after removing the mud in the hole, washing and get the well clean. After one hour’s disinfection, get out of the disinfection liquid. After the wells naturally seepage to the normal level again, Take the normal method of disinfection (single administration or sustain disinfection), it can be used normally after it.

⑴single administration:

For the clear well water, add chlorination by 1.0 mg / l, that is 4 grams bleaching powder (the quality that 1 yuan coins could shovel for two times) for one ton water; for the general quantity water, the amount of chlorination could be calculated by 2.0 mg / l, that is 8 g bleaching powder for a ton of water; and if the water quality is poor, calculate the chlorination by 5.0 to 10.0 mg / l, that is 20 ~ 40 g bleaching powder for a ton of water.  Or 20 pieces of bleaching tables (0.5 g / tablet). Dissolved the bleaching powder or the bleaching table with a small amount of water in bowls or non-metallic containers, place for 10 minutes, dumped it into the water that to be disinfected, blend it, and disinfect if for half an hour, if it is easy to sniff out the smell of chlorine, the residual chlorine is regarded qualified preliminary. If not, could increase proper dosage of the bleaching powder; if the chlorine has a strong smell, it should be placed for a longer period of time, and could be used after the residual chlorine decreases.

⑵continuous disinfection：

Take a plastic bottle (for example: mineral water bottles or Coke bottles), cave a number of holes on it, such as 3 holes per cubic meter), the size of pore to be 0.2 mm, fill it with 25 times of the bleaching powder of the above dosage, tighten the mouth of the bottle.  Then take another bottle or wood as buoys, make the sanitizing bottles hanging under the sea level about 40 meters by the plastic rope line. Thus, the chlorine liquid constantly seeps out by the oscillation of the water, once disinfection could sustain for more than 10 days.

3、Every household should pay attention to the water sanitation work, have the condition of boiling should boil the water, and drink after cooling. For chemical disinfection, should add disinfectants according to the water quality, and could add alum for clarification as the water is comparing turbidity. For the sensory cleaner water, add 0.2 g bleaching powder for a fetching water (50 kg); for the less clean water, 1 g ~ 2g bleaching powder for a fetching water (50 kg); or add 1 piece of bleaching tablet (0.5 g / tablet), disinfect for half an hour.

Two, sanitation disinfection

1、Repair the public rest room and facilities of the rubbish collecting points damaged by the flood in time, and do the disinfection work, for the environment after cleaning, could spray 1000~2000mg/l effective chlorine (add 5g~10g bleaching power for 1000 grams, the effective chlorine of the bleaching power could account for 20%)喷洒消毒30分钟if available chlorine by 20% dollars) 30 minutes for disinfection.

2、Clean up, bury or incinerate the carcasses of the livestock, poultry and other animal dead of flood. If there is a large number of animal carcasses, spray 5% bleaching powder disinfectant for 1 ~ 2 hours, then, pack them in plastic bags, have the bags into the deep soil, and bury them away from the place of residence and water source for 50 m, dig the hole deep ≥ 2 m, deal with the animal carcasses and the bottom of the hole with 20 ~ 40 g / m bleaching powder, and then buried with soil compactly.

3、In the places where victims gathered, the emergency toilets should be built, faeces should be disinfected. The amount of bleaching powder used should be 1 / 5 of the stool, and focuses bury it after two hours.

4、Rubbish that infected by the infectious disease can be generated and burnt.

Three, have a good work of insecticidal

1、The media water-receding biological control principle after the flood, should take the ecological environment management as a core, and supplemented by personal protection, physical and chemical control and prevention measures. First of all, it is necessary to eliminate post-disaster deposited silt, clear the drains, repair the road, fill the low-lying land, overturn the pans and invert the cans, take efforts to eliminate the mosquito and fly breeding ground, improve sanitation, timely bury and cover the bodies of livestock, living garbage, and feces especially.

2、Focus on the insecticidal work in order to prevent the incidence of intestinal infectious disease, and measures such as spraying drug, poisoning bait booby traps, Nien options eradication could be taken.

（1）Killing adult flies: 1% ~ 2% dichlorvos emulsions, 2.5% malathion emulsion could kill them. Toxicological rope, bait, poison water could also kill flies, or use the flies ribbon, or paper.

（2）For the flies breeding places outdoors, could spray 500ml 0.2% dichlorvos emulsion or 0.2% malathion per square meter to kill them.

3、Measures for killing mosquito

（1）killing mosquito

①Effective outside sprinkler: spray 1%~2% dichlorvos emulsion or 2.5% malathion.

②Around the wall indoors (PAC gate): Fendona (10 ~ 20 mg/m2) or Kai-ling (10 ~ 20 mg/m2), aerosol spray insecticides sold on the market could also be used to kill mosquitoes.

（2）killing larvae

①clear the drains, remove small stagnant water, fill the ditch.

②For the holes with water and worm pit that could not be temporarily covered, we could spread malathion, fenitrothion, and so on.

（3）Protect the crowd to reduce them contacting with mosquitoes

① Lighten the coil before sleep.

② Smear the avoid mosquito agent.

③ Disaster areas that have conditions could install doors, windows or nets which are effectively avoid mosquitoes.