The auto maintainance and repaire waste water mainly consists of oil wastewater in auto maintainance, car washing wastewater and domestic wasterwater.
To clean the auto parts, it is required to use environmental cleaning agent. Recycle the agent and not to discharege it before disposed. And the sediment sludge should be disposed as solid waste. Large auto repair companies like bus repair shops discharge alkaline oil wastewater that are mainly produced in cheaning the engine and auto parts. It contains suspended solids, petroleum, COD, cleaning agent and other pollutant waste. The wastewater produced in cleaning cars is the majority of auto maintainance and repair waste water. Generally, car washing has special washing machine waster water disposal equipment and water saving device. They discharge car washing waster water and waste water that has been disposed by the related equipments. Besides, auto maintainance and repaire also produces some domestic wastewater.
Disposal of alkaline oil wastewater
The oil waste produced by cleaning auto engine and parts is of high PH, high content of oil and high COD.
The general disposal is to break the emulsiom by addding calcium chloride firstly. Secondly, add PAC& PAM to make flocculation and recycle the deposit. Then let the water goes through the active carbon before discharge.Here is one example from some auto maintainance and repair shops.
Pretreatment to the oil wastewater >> coagulation sedimentation >> adsorption filtration >> discharge to the sewer or recycle.
Car washing and cleaning also produce wastewater. Common car washing methods include manual car washing, high pressure water gun car washing, full-auto computer car washing, no water car washing, steam car washing, no brush automatic washing machine car washing.
Manual Car Washing:
It is an old car washing method with the tools of bucket and cleanig cloth. It does harm to the car body easily as well as wasting water. Besides, it causes problems such as environment pollution, traffic jam, harm to the view of the city, etc.
High Pressure Water Gun Car Washing:
It is difficult for water gun to wash out all the silt for lack of high pressure. It also harms the car body when rubbing it. Besides, it is a waste of great water to use about 50 liters water to cleaning one car on average. Many cities has officially prohibited to use water gun now.
Large Computer Car Washing Room: With high degeree of automation, computer car washing room washes cars fast and well. But the Construction cost is high.
No Water Car Washing: It is a new kind car washing method. It can make car body clean and new with cleaning agent. But it cannot clean out the dirst of underbody and tires. Does harm to car body easily if misoerate.
Steam Car Washing: Steam car washer turns water into vapour to clean the cars. It is environmental and water-saving.
Our company is one of the leading companies specialized in steam car wash machines in China. You are welcome to contact us for enquiry and cooperation.
Recommended machines for Steam Car Wash: Hr6000 No Boiler New Steam Car Washing Machine
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