Key News: u8V Water-free car washing with wet wipes will become a new highlight of mobile car washing. Focus Interview: Water-free car washing with wet wipes, domestically and internationally pioneered. Anyang Translation | Writing | Editing for Sale, provided by Liangcai Hongfei Auto Beauty Supplies Company. National free phone: 400-659-6964 QQ: 845739528 Detailed address: http://fuziyi8888666.cn.alibaba.com, Get-rich projects, Current situation and development trend of water-saving in car washing in China.
The water-free car beauty wet wipes are the first car beauty products created by Shanghai Liangcai Hongfei Auto Supplies Co., Ltd., Inner Mongolia branch (www.lchf88.com). They can provide comprehensive support to agents, and offer free dealership agency when purchasing wet wipes. The water-free car beauty wet wipes are equivalent to a mobile car wash beauty shop. Traditional car washing is restricted by seasons, equipment, and water source conditions. However, water-free car washing with wet wipes is a modern and novel method that does not require any water. The cleaning liquid contained in the wet wipes has multiple functions such as stain removal, anti-freezing, gloss enhancement, and beautification, without the need for a store or any car washing equipment; it doesn't even require a single drop of water. It is not limited by seasons, and winter car washing remains unaffected by freezing temperatures. Furthermore, while washing the car, waxing and polishing are simultaneously completed. This method requires minimal investment, shows results quickly, is easy to operate, saves on expensive rent and decoration costs, is not constrained 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 "true kung fu" mobile "car wash"!
I. Future water resources development in our country is approaching its limit.
With the further development of our country's economy and society, population growth, and accelerating urbanization, water consumption and sewage discharge continue to increase. Our country annually discharges more than 8 billion cubic meters of sewage, with cities discharging about 137 million cubic meters of sewage daily, but 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 pollution. Of the seven major river systems, main lakes, coastal waters, and some regional groundwater in our country, over 75% of lake areas, 52% of urban river sections, more than 90% of urban water bodies, and 50% of urban groundwater have been polluted to varying degrees, further exacerbating water resource shortages and making the already serious imbalance between water supply and demand more prominent.
Deputy Minister of Water Resources Hu Siyi said at the 2006 Academic Annual Meeting of the Chinese Hydraulic Engineering Society held in Hefei on November 5th that according to existing data predictions, our country's water resources development and utilization have approached their limits. If effective measures are not taken early enough, our country will face a severe 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.
II. Current water usage status of car washing industry in our country
The water wasted from car washing in a year could supply 1 million people in Shanghai for 75 days. Taking just the car washing industry in Shanghai as an example. Currently, there are a total of 2.1 million Shanghai-licensed motor vehicles (as of 2006), 100,000 long-term registered foreign motor vehicles, totaling 2.2 million motor vehicles, including 45,000 taxis. Calculated by each vehicle being washed once a week, with an average water consumption per wash of 70 kilograms (gun-type car washing consumes 30-50 kilograms of water, mechanical car washing consumes 130-150 kilograms), the water consumption is as follows:
Taxi annual water consumption: 45,000 vehicles x 0.07 x 365 = 1.15 million cubic meters
Other vehicles weekly water consumption: 2.155 million vehicles x 0.07 x 52 weeks = 7.85 million cubic meters
Total: one year consumes 9 million cubic meters of water.
According to design standards, urban residents use 120 kilograms of water daily, so the water used for washing cars in a year could meet the living water needs of 1 million people for two and a half months; statistics from the Shanghai Water Authority show that about 70% of gas stations in Shanghai have attached motor vehicle cleaning services, approximately 550 to 600; licensed car washing stations (points) number 315; unlicensed car washing stalls are about 300. Among thousands of car washing stations (points), currently only 8 have installed and used motor vehicle sewage recycling purification systems. Although large bus company car washing stations have the ability to recycle and reuse car washing water, due to reasons such as unsuitable car washing facilities for bus structures and high mechanical car washing costs, most still adopt higher water-consuming manual cleaning.
National Committee member and Shanghai municipal government advisor Zhao Guotong said: "If we do not quickly change this awkward situation where we lack something yet waste it, achieving conservation and reasonable, efficient use of resources, these resource-consuming megacities will consume their own future development."
Ningbo's annual car washing water wastage could fill 65 Jiushan Rivers. According to relevant department statistics, as of May 7, 2007, Ningbo had 632,000 privately-owned cars (including 167,000 in urban areas). If calculated by each car being washed once a week and using 0.2 tons of water per wash, the water used by Ningbo's privately-owned cars in a year could fill 65 Jiushan Rivers (Jiushan River capacity is 100,000 tons).
III. Introduction to current car washing water recycling purification technology in our country
To evaluate the merits of car washing water recycling purification technology, comparisons should be made from the following aspects: ① small oil separation sedimentation tank; ② low electricity consumption; ③ few consumables; ④ good water quality with no odor, car washing wet wipes; ⑤ initial equipment investment cannot be too much; ⑥ fully automatic operation with low equipment failure rate; ⑦ water savings over 90%. Currently, there are mainly five types of car washing water recycling purification technologies available on 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 tanks are very large, resulting in high civil construction costs, high operating costs, regular activated carbon replacement required, and recycled water with odor. Its advantage is low equipment investment and small footprint, but the actual investment is still high. This is a relatively traditional process with average effect, often becoming mere decorations at the end.
Oil separation sedimentation coagulation chemical dosing sedimentation multi-media filtration clear water tank
The biggest disadvantage of this process is that chemicals must be added, generally polyaluminum chloride (PAC), leading to high operating costs and large water tanks with high civil construction costs. This is also a relatively traditional process. Its advantage is better effect, but both initial investment and operating costs are high, adding chemical reagents is not environmentally friendly, and it is an obsolete process.
Oil separation sedimentation multi-media filtration membrane filtration clear water tank
The biggest disadvantage of this process is that membranes easily clog, consume a lot of electricity, and recycled water has odor. Its advantage is good water quality, but applying membrane technology to treat car washing water is somewhat "overqualified", water-saving but not energy-saving. Both equipment investment and operating costs are high.
Oil separation sedimentation sedimentation air flotation multi-media filtration clear water tank
The biggest disadvantage of this process is that water tanks are very large. This is a traditional wastewater treatment process unsuitable for car washing water reuse treatment.
Oil separation sedimentation biological reactor multi-media filtration clear water tank
This process completely eliminates any chemical reagents and membrane technology, integrating biological and purification processes, and is the most successful process so far. Its biggest advantage is that water tanks are very small, only 1/4 the size of general processes, with little civil construction cost, and very stable water quality with no odor. Its disadvantages are high technical requirements and significant initial equipment investment.
Considering the above five different processes, I believe that the fifth process of biological reactor + multi-media filtration is the most successful process internationally so far. It has been applied well in China. Relevant departments are recommended to promote it vigorously.
IV. Water-saving regulations for car washing water
In 2006, the Shanghai Construction and Transportation Commission, the Municipal Economic Commission, the Municipal Water Authority, and the Environmental Protection Bureau jointly formulated the "Implementation Opinions on Consolidating the Achievements of Creating Water-Saving Cities and Strengthening the Construction of Water-Saving Societies (Cities)". The overall goal is to preliminarily build a water-saving society in Shanghai by 2010 and gradually implement 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, regulating water usage in the car washing industry, requiring car washing businesses to install purification circulation devices and reuse water.
The "Zhejiang Province Water Conservation Measures" issued by the Zhejiang Provincial Government stipulates that starting from October 1, 2007, the water facilities of car washing stations will be standardized: units washing more than 50 motor vehicles daily must install and use circulating water facilities. Those who fail to correct within the specified period will be fined between 3,000 yuan and 30,000 yuan.
V. Development trends of water-saving in car washing water
1. Bottleneck issues in promoting water-saving technology for car washing water
Many domestic car washing rooms purchase circular water equipment just for the sake of business registration, which are just decorations. Inadequate policy enforcement is a major reason why water-saving technology for car washing water is difficult to promote. Although local governments across the country have introduced some related policies, it is difficult to implement and supervise them thoroughly. Departments such as water authorities, environmental protection, water-saving offices, and even sanitation departments are all management departments, making coordination and implementation difficult. In contrast, foreign countries have higher requirements for car washing water recycling treatment technology. For example, Spain requires that a certain distance apart on highways, there must be a car washing room. Police patrol daily to check whether the car washing room recycles and reuses car washing water and regularly inspect whether the soil around the car washing room is polluted. If violations are found, punishments are very severe, and car washing rooms often have no choice but to close down.
According to Meng Guanghui, head of the Science and Technology Development Department of the Beijing Water Conservation Management Center, although car washing rooms are required to have circular water recycling equipment, the technical requirements for such equipment are not high. Generally, having a large pool for storing sewage and sewage treatment equipment is sufficient. To save costs, many car washing rooms purchase sand filtration equipment worth about 10,000 yuan. Devices with turbid water quality and odorous smells eventually end up being abandoned.
Since sand filtration equipment cannot produce satisfactory recycled water, "stealing water" becomes a great trick for car washing rooms to save costs. According to Meng Guanghui, checks and law enforcement on "stealing water" behaviors are separated, leading to continuous prohibitions.
2. Development trend of water-saving in car washing water
Water recycling and water-saving in car washing is a general trend. Car washing points in all water-deficient regions' cities and rural areas will gradually install car washing water recycling equipment in the coming years. Besides government market regulation and intervention in water prices, supervision efforts and management policies of specialized government institutions are key.
Adopting advanced water-saving processes and equipment. As long as circular water equipment truly brings economic benefits to car washing owners, eliminating the "decoration" phenomenon, we can fully implement environmental protection and water-saving car washing. The head of the China 21st Century Agenda Management Center, Ke Bing, said that developing a circular economy should pay more attention to environmental protection. The government should clarify the technical content of the circular equipment used by car washing rooms, not only to achieve the purpose of saving water but also protect the environment, encourage and support the use of high-tech content circular equipment.
Supplementing rainwater after car washing water recycling. Rainwater is a good low-salt supplementary water, which can dilute the increase in concentration caused by water recycling. Policy guidance is recommended.
After car washing water recycling, true zero emissions will be achieved, and only periodic cleaning of sludge-like waste will be required, completely eliminating sewer blockages.
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