What Are the Different Types of Drainage Equipment?

Urban drainage system is an engineering facility system that treats and removes urban sewage and rainwater, and is an integral part of urban public facilities. Urban drainage system planning is an integral part of urban master planning. Urban drainage systems usually consist of drainage pipes and sewage treatment plants. In the case of sewage and rainwater flow system, the sewage is collected by the drainage pipe, sent to the sewage treatment, discharged into the water body or recycled; after the rainwater runoff is collected by the drainage pipe, it is discharged into the nearest water body.

By city

Drainage ditches were built in the ancient Roman city in the 6th century BC. Pottery drainage ditches have been called in Chinese cities during the Warring States Period. Ming and Qing

1. From the aspect of environmental protection, drainage works can protect and improve the environment and eliminate the harm of sewage. Eliminating pollution and protecting the environment is an indispensable condition for economic construction and a major event to protect people's health and benefit future generations.

2. In terms of sanitation, the construction of drainage works has far-reaching significance for protecting people's health.

3. Economically speaking, first of all, water is a very precious natural resource and it is indispensable in all sectors of the national economy. Secondly, proper treatment of sewage and timely removal of rain and snow are one of the necessary conditions to ensure the normal operation of industry and agriculture. At the same time, whether the wastewater can be properly treated also has an important impact on the development of new industrial production processes.

4. The sewage itself also has great economic value, such as

1,

1. The construction of urban drainage system should be accelerated. Most cities in China

Urban drainage system Paris sewer

Paris often

Paris drainage channel

It rained, but there was never any traffic congestion caused by rain. The sewer system in Paris is a great project that is peerless. There are no black water cross-flow garbage, and no rotten objects of various odors. In fact, since Hugo introduced Jean Valjean's future son-in-law in a tragic world through a dangerous and deep sewer dredging, the sewer system in Paris has undergone countless improvements. Now, Parisians It has even been developed into a sewer museum to introduce their achievements to the world.

The sewers in Paris are located 50 meters below the ground of the city of Paris. The waterways are crisscrossed and dense like spider webs, with a total length of 2347 kilometers, which is far larger than the Paris subway.

Paris Mi collects 15,000 cubic meters of solid waste from sewage every year. There are currently 4 sewage treatment plants in the Paris area, with a daily water purification capacity of more than 3 million cubic meters. The purified water is discharged into the Seine, and Paris is washed daily. The 400,000 cubic meters of non-drinking water in the streets and watering the grass comes from the Seine.

Urban drainage system Tokyo sewer

Tokyo area

Tokyo underground drainage system

The underground drainage system is mainly built to avoid being hit by typhoon storm water disaster. This system was started in 1992 and completed in 2006. It is the most advanced sewer drainage system in the world. Its drainage standard is "once in five to ten years." It consists of a series of concrete pits and the underground river reaches a depth of 60 meters.

There are two ways to clear the rainwater in Tokyo: rainwater in the areas near the river canals usually pass through the drainage pipes of various buildings, and the roadside drainage outlets directly flow into the rainwater accumulation and discharge pipeline, and finally drain into the sea through large tributaries; the rainwater in other areas , Will enter the public drainage pipe with the drainage system of each building, and then flow into the public waters with the clean water drainage pipe of the sewer system.

Urban drainage system London sewer

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Sewers in central London

In 0 years, London was already a European megacity with a population of 570,000, but the city's drainage system was extremely poor. An open channel more than a foot deep was filled with ashes, animal carcasses, and even feces. Poor sewage systems make the streets dirty and stinky. In 1842, the British Empire sent expeditions to Rome and Paris to visit the water supply and drainage system, and found that the Roman drainage system was much more advanced and sanitary than the Victorian Britain. To improve groundwater channels, the British government has set up a royal commission.

In 1856, Batherjee was tasked with designing a new drainage system in London. He plans to channel all the sewage directly to the Thames Estuary and all into the sea. His original design plan was: the underground drainage system is 160 kilometers long, located 3 meters deep, and requires 3.5 million tons of soil to be excavated. However, this plan was rejected 5 times in a row. In the summer of 1858, the odor in the city of London reached the worst level in history. Under great public pressure, the London municipality had to agree with Batherge's urban drainage system reform plan.

In 1859, the reconstruction of the London underground drainage system was officially started. The project was completed in 1865, the actual length exceeded the design plan, and the total length reached more than 1,700 kilometers. In that year, all sewage in London was discharged to the sea. ^[5]

Urban drainage system Ganzhou sewer

As early as 900 years ago, a small city in southern China, Ganzhou, has built an underground long dragon that is as good as the Paris sewer. More importantly,

Ganzhou Sewer System

This sewer is also responsible for the drainage function of 100,000 people today. ^[6]

The ancient sewer in Ganzhou is a gift buried by our Song ancestors 900 years ago. It is not only Ganzhou's, but also all Chinese. However, when people receive this gift today, a flush will inevitably appear on their faces. ^[6]

This "political achievement" buried in the ground allowed Liu Yi's merit to be spread for a full 900 years. On the afternoon of June 14, Hongfeng Zhangjiang and Gongjiang No. 1 in Jiangxi passed through Ganzhou City within half an hour. Different from other places in the southern flood, the media described the people in the old city of Ganzhou at that time as "orderly lives, children playing and fishing in the waterfront at the gate of the city, and businesspeople doing business safely by the flood."