Key News: u8V Waterless Car Washing with Wet Wipes to Become a New Highlight in Mobile Car Washing
Focus Interview: Waterless Car Washing with Wet Wipes - Domestic and International First
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Wealth Creation Project: Current Status and Development Trend of Water Conservation for Car Washing in China
Waterless Car Washing and Beauty Wet Wipes are car beauty supplies first created by Liancai Hongfei Auto Products Inner Mongolia Branch (www.lchf88.com). They can provide comprehensive support for agents, offering free dealership and agency when purchasing wet wipes. The waterless car washing beauty wet wipes are equivalent to a mobile car wash and beauty shop. Traditional car washing is constrained by season, equipment, and water source conditions, whereas waterless car washing with wet wipes is a modern new type of waterless car washing method. The car washing liquid contained in the wet wipes has multiple functions such as stain removal, anti-freeze, gloss enhancement, and beautification. It does not require a store or any car washing equipment, and even no drop of water. It is not restricted by seasons, and winter car washing is not afraid of freezing, allowing normal car washing. Moreover, while washing the car, it simultaneously completes waxing and polishing beautification. It requires less investment, shows results quickly, is simple to operate, saves expensive rent and decoration costs, is not limited by location or water/electricity usage, is convenient, fast, and does not require waiting, saving time, effort, and money for car owners! It is an extremely "real skill" mobile "car wash"!
1. Future Water Resource Development in Our Country Approaching Its Limit
With further development of our country's economy and society, increasing population, and accelerating urbanization process, water consumption and sewage discharge continue to increase. Our country discharges over 80 billion cubic meters of sewage annually, with urban areas discharging approximately 137 million cubic meters daily, and the sewage treatment rate is only 6%. A large amount of untreated or partially treated sewage is discharged into rivers, lakes, and seas, causing water body pollution. Nationwide, 75% of lake waters, 52% of city river sections, over 90% of city water bodies, and 50% of city groundwater have been polluted to varying degrees, further exacerbating water resource shortages and making the already severe imbalance between water supply and demand more prominent.
Deputy Minister of Water Resources Hu Siyi said on November 5 at the 2006 Academic Annual Meeting of the Chinese Society of Hydraulic Engineering held in Hefei that according to existing data predictions, our country's water resource development and utilization has approached its limit. If effective measures are not taken early, our country will face a serious water crisis. Hu Siyi pointed out that building a water-saving society is a strategic measure based on our country's national conditions and water situation.
2. Current Water Usage Situation in Our Country's Car Washing Industry
The water wasted in car washing in a year is enough for one million Shanghai residents to use for 75 days.
Taking only the car washing industry in Shanghai as an example, Shanghai currently has a total of 2.1 million vehicles with Shanghai license plates (as of 2006), 100,000 vehicles from other regions registered in Shanghai, totaling 2.2 million motor vehicles, including 45,000 taxis. Calculating each vehicle being washed once a week with an average water consumption of 70 kilograms per wash (30-50 kilograms for gun-type car washing, 130-150 kilograms for mechanical car washing), the water consumption is as follows:
Taxi annual water consumption: 45,000 vehicles * 0.07 * 365 = 1.15 million cubic meters
Other cars weekly water consumption: 2.155 million vehicles * 0.07 * 52 weeks = 7.85 million cubic meters
Total: Annual water consumption of 9 million cubic meters
According to design standards, urban residents consume 120 kilograms of water daily, and the annual water consumption for car washing could meet the living water needs of two and a half months for one million people; Statistics from the Shanghai Water Authority show that about 70% of gas stations in Shanghai are equipped with motor vehicle cleaning facilities, approximately 550 to 600 locations; there are 315 licensed car wash stations (locations); and about 300 unlicensed car wash stalls. Among thousands of car wash stations (locations), currently only eight have installed and used motor vehicle sewage recycling purification systems. Although large bus companies' car wash stations have the capability to recycle and reuse car wash water, they mostly still use labor-intensive cleaning due to reasons such as car wash facilities not adapting to bus structures and high mechanical car wash costs.
National Committee member, Shanghai Municipal Government advisor Zhao Guotong said: "If we do not soon change this awkward situation where we lack something but waste it, achieving conservation and reasonable, efficient use of resources, these resource-consuming megacities will consume their own future."
Ningbo's annual car washing water waste can fill 65 Jiushan Rivers.
According to relevant department statistics, as of May 7, 2007, Ningbo's private car ownership reached 632,000 vehicles (including 167,000 in urban areas). If calculated at each car being washed once a week and using 0.2 tons of water per wash, Ningbo's private cars consume water annually that can fill 65 Jiushan Rivers (Jiushan River's capacity is 100,000 tons).
3. Introduction to Current Car Wash Water Recycling and Purification Processes in Our Country
To evaluate the advantages and disadvantages of car wash water recycling and purification processes, comparisons should be made from the following aspects: ① small oil separation sedimentation tank; ② low power consumption; ③ fewer consumables; ④ good water quality without odor; ⑤ initial equipment investment cannot be too much; ⑥ fully automatic operation with low equipment failure rate; ⑦ water savings above 90%. Currently, there are mainly five types of car wash water recycling and purification processes in the market.
Oil Separation Sedimentation Primary Sedimentation Secondary Sedimentation Multi-Media Filtration (Activated Carbon Filtration) Clear Water Tank
The biggest disadvantage of this process is that the water tank is very large, resulting in high civil construction costs and operating costs, requiring regular replacement of activated carbon, and the recycled water has an unpleasant odor. The advantage is low equipment investment and small land occupation, but the actual investment is still high. This is a relatively traditional process with general effectiveness, and such equipment often becomes a mere decoration at the end.
Oil Separation Sedimentation Coagulation Medication Sedimentation Multi-Media Filtration Clear Water Tank
The biggest disadvantage of this process is the need for medication, generally adding polyaluminum chloride (PAC), leading to high operating costs, and the water tank is very large, resulting in high civil construction costs. This is also a relatively traditional process, with better effects, but both initial investment and operating costs are high. Adding chemical agents is not environmentally friendly, making it an obsolete process.
Oil Separation Sedimentation Multi-Media Filtration Membrane Filtration Clear Water Tank
The biggest disadvantage of this process is that the membrane easily clogs, consumes a lot of electricity, and the recycled water has an unpleasant odor. The advantage is good water quality, but applying membrane technology to treat car wash water is somewhat "overkill," conserving water but not energy. Both equipment investment and operating costs are high.
Oil Separation Sedimentation Sedimentation Flotation Multi-Media Filtration Clear Water Tank
The biggest disadvantage of this process is that the water tank is very large, which is a traditional wastewater treatment process and not suitable for car wash water reuse treatment.
Oil Separation Sedimentation Biological Reactor Multi-Media Filtration Clear Water Tank
This process completely eliminates any chemical agents and membrane technology, integrating biological and purification processes, making it the most successful process so far. The biggest advantage is that the water tank is very small, only 1/4 of the size of general processes, with very little civil construction cost, and the water quality is very stable, with no unpleasant odor. The disadvantage is that the technical requirements are very high, and the initial equipment investment is not small.
Considering the above five different processes, the author believes that the fifth process, biological reactor + multi-media filtration, is currently the most successful process internationally and has already had good applications in China. Relevant departments are recommended to promote it vigorously.
4. Water-Saving Regulations for Car Wash Water
In 2006, the Shanghai Construction and Transportation Commission, the Economic Commission, the Water Bureau, and the Environmental Protection Bureau jointly formulated the "Implementation Opinions on Consolidating the Results of Creating a Water-Saving City and Strengthening the Construction of a Water-Saving Society (City)." The overall goal is to preliminarily build a water-saving society in Shanghai by 2010, gradually implementing water-saving car washing.
On August 4, 2006, the 26th Session of the Standing Committee of the 10th Shaanxi Provincial People's Congress passed a water-saving implementation method, standardizing water usage in the car washing industry, requiring car washes to install purification and recycling devices and reuse water.
The Zhejiang Provincial Government issued the "Zhejiang Province Water Saving Measures," stipulating that starting from October 1, 2007, car wash sites' water facilities will be standardized: units washing more than 50 vehicles daily must install and use circulating water facilities. Those who fail to correct within the deadline will be fined between 3,000 yuan and 30,000 yuan.
5. Development Trends of Water-Saving in Car Wash Water
1. Bottleneck Issues in Promoting Water-Saving Technology for Car Wash Water
Many domestic car wash rooms purchase circulating water equipment merely for business registration needs and keep them as decorations. Incomplete policy enforcement is a significant reason why water-saving technology for car wash water is difficult to promote. Although local governments across the country have introduced some related policies, truly implementing and supervising them effectively is challenging. Water, environmental protection, water-saving offices, and even municipal departments are all management departments, making coordination and implementation difficult. In contrast, foreign countries have higher requirements for car wash water circulation treatment technology. For example, Spain requires that highway rest stops must include car washes at certain intervals, with police officers checking daily whether the car washes recycle water and regularly inspecting whether the surrounding soil around car washes is polluted. If violations are found, punishments are severe, often forcing car washes to close down.
According to Meng Guanghui, head of the Science and Technology Development Department of the Beijing Water Conservation Management Center, although car washes are required to have water recycling equipment, the technical requirements for such equipment are not high, usually just needing a large sewage pool and water treatment device. To save costs, many car washes purchase sand filtration equipment costing around 10,000 yuan. Devices producing turbid and smelly water often end up being abandoned.
Since sand filtration equipment cannot handle satisfactory circulating water, "stealing water" becomes a major trick for car washes to save costs. According to Meng Guanghui, checks and law enforcement for "stealing water" are separated, causing "stealing water" to persist despite bans.
2. Development Trends of Water-Saving in Car Wash Water
Recycling car wash water is an inevitable trend. All car wash points in water-scarce cities and rural areas will gradually install car wash water recycling equipment in the coming years. Besides government intervention in water prices through market regulation, dedicated government agencies' supervision and management policies are crucial.
Adopting advanced water-saving processes and equipment. As long as the circulating water equipment truly brings economic benefits to car wash owners and avoids becoming mere decorations, we can completely implement environmentally friendly and water-saving car washing. Ke Bing, director of the China 21st Century Agenda Management Center, said that developing a circular economy should prioritize environmental protection. The government should clearly specify the technical content of the circulating equipment used in car washes, not only achieving water conservation but also protecting the environment, encouraging and supporting the use of high-tech circulating equipment.
Car wash water recycling combined with rainwater replenishment. Rainwater is an excellent low-salt supplementary water source that can dilute the increased concentration factor after water recycling. Policy guidance from relevant departments is recommended.
After car wash water recycling, true zero discharge will be achieved, requiring only regular cleaning of sludge-like waste, completely eliminating sewer blockage issues.
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