How to do a good job in cleaning and disinfecting the environment of personal housing| Science popularization time, post flood status | houses | flood disasters

Part.01

Check if the structure of the house is damaged

Before returning home after the flood, it is necessary to inspect the structural damage of the house in advance and ensure that the house is in a safe state before entering. Ventilation the room in advance and check for loose or detached power cords and any gas leaks.

If the above situation exists, contact the relevant company for repair in a timely manner, and enter after the problem is resolved. In addition, do not enter basements submerged by floods to prevent electric shock hazards.

Part. 02

Remove stagnant water from the house

After the flood, the most crucial thing for safe disposal of the room is to remove all accumulated water as soon as possible. If there is a large accumulation of water in the basement, it needs to be extracted in batches according to the situation to avoid structural damage and wall collapse that may occur if all water is extracted in a short period of time.

If there are petroleum substances on the surface of the accumulated water, it is necessary to contact professional personnel to remove them before removing the accumulated water.

Part. 03

Clean the interior of the house well

1. The principle of cleaning inside the house.

After the flood, the house needs to be thoroughly cleaned and disinfected before moving in. Before cleaning the house, indoor items need to be classified, including which items can be cleaned and which items can be discarded directly.

Usually, materials that are not easily absorbent, such as metal, glass, and hard plastic, can be cleaned and dried. Carpets and other highly absorbent items are difficult to clean and dry after floods, so they can be considered for disposal. In addition, food, beverages, medicines, etc. exposed to floods and mud with damaged packaging cannot be cleaned and disinfected, and it is recommended to dispose of them.

2. Methods for cleaning inside the house.

When cleaning a house, first thoroughly clean the harder surfaces such as walls, household appliances, floors, furniture, etc., and wipe them with a solution prepared with hot water and regular cleaning agents. Secondly, clean all soft fabrics, including bedding, clothing, children's toys, etc.

If you need to use a disinfectant, you can choose a chlorine containing disinfectant solution with effective chlorine at 500mg/L, but it needs to be cleaned first and then disinfected. When using cleaning agents and disinfectants, carefully read and follow the instructions on the product label, and do not mix them. To reduce the health risks caused by microbial growth, fans can be used to increase air circulation during and after the house cleaning process. After cleaning the house, the clothes worn should be carefully cleaned and disinfected.

3. Mold treatment.

Identification of fungi. "Look": Observe whether there is any discoloration on the surfaces of walls, ceilings, and other materials. If discoloration occurs, it may be due to mold growth. "Smell": If the room has a persistent and unpleasant smell of mildew, dirt or odor, it may be the growth of mold.

Removal of mold. Flat hard wall: Use a shovel to remove and wipe clean with soap and water. Rough surfaces such as concrete: Use a hard bristled brush to remove and clean with soap and water. If the growth area of mold is too large, you can seek help from professional technical institutions such as disease control agencies. When performing mold removal operations, it is advisable to wear gloves, masks, and protective goggles, and open windows for ventilation.

4. Treatment of drinking water and domestic hot water.

Turn on the faucet and drain the water trapped in the pipeline until the color of the drinking water becomes colorless and odorless.

It is advisable to drink plain or bottled water and avoid drinking raw water directly.

It is advisable to raise the water temperature of the water heater to 60 ℃ and open the hot water faucet to release the trapped water in the hot water pipeline for one hour to completely remove pollution in the hot water pipeline.

Part. 04

Indoor environment and item disinfection

1. Object surfaces, walls, and floors. A chlorine disinfectant solution containing 500mg/L effective chlorine, 200mg/L chlorine dioxide or 1000mg/L peroxyacetic acid can be used for spraying or wiping disinfection, with an action time of 30 minutes.

2. Daily necessities. After cleaning furniture, sanitary ware, office supplies, etc., rinse, wipe or soak with a chlorine containing disinfectant solution containing 500mg/L effective chlorine for 30 minutes, or disinfect with 200mg/L chlorine dioxide, 1000mg/L peroxyacetic acid, 1000mg/L quaternary ammonium salt disinfectants for 15-30 minutes. After disinfection, wipe clean with clean water.

3. Disinfection of meals and drinking utensils. After cleaning meals and drinking utensils, it is preferred to boil them for disinfection, and the boiling time should be at least 15 minutes. Disinfectants can also be used for soaking and disinfection. After soaking with disinfectants, rinse thoroughly with clean water.

4. Food. Food that has been soaked or spoiled by floods should be promptly disposed of, and no food that has been soaked in floods should be consumed. Steamable food should be fully heated before consumption.