System for water plant capacity expansion and increment

Abstract

Belonging to the technical field of water, wastewater and sewage treatment, the invention provides a system for water plant capacity expansion and increment. The system includes a sedimentation tank,a filter tank, a muddy water treatment tank, a dosing facility and a clean water tank. The filter tank is provided with two stages of filter tanks, i.e. an activated carbon filter tank and a uniform granular filter material filter tank sequentially, two water delivery branch pipes are connected to the sedimentation tank, a water delivery branch pipe 1 is connected to the dosing facility and delivers to-be-treated water and reagents to the activated carbon filter tank, a water delivery branch pipe 2 delivers the to-be-treated water and reagents to the uniform granular filter material filter tank; the end of the activated carbon filter tank is equipped with the muddy water treatment tank, a water outlet pipe and two distribution pipes are connected to the muddy water treatment tank, the water outlet pipe is connected to the clean water tank, the distribution pipe 1 and the distribution pipe 2 are connected to the uniform granular filter material filter tank respectively; bypass pipes aredistributed between the distribution pipe 1 and the distribution pipe 2, and between the distribution pipe 2 and the water delivery branch pipe 2, and the bypass pipes and the water outlet pipe are equipped with switches respectively. The system provided by the invention is applied to capacity expansion and increment reforming of water plants, and has the advantages of quick effect, short construction period, low fund investment and good adaptation flexibility.

Description

technical field [0001] The application relates to a system for capacity expansion and increment of a water plant, which belongs to the technical field of water, waste water, sewage or muddy water treatment. Background technique [0002] As one of the infrastructure projects, the water plant plays a very critical role in the operation of the city. However, with the gradual increase of population and city size, the water plants planned and constructed in the early stage can no longer meet the existing water demand. Taking a city in the south as an example, it now has a production capacity of 300,000 tons / day in the first phase, and the peak daily overload is 20%, reaching a water supply capacity of 360,000 tons / day (this indicator is close to the overload of the water plant. capacity limit), and will face an external increase of about 5% every year, about 10,000-20,000 tons / day, that is, in 2018, it is hoped that the water plant will have a production capacity of 380,000 tons...

AI Technical Summary

Problems solved by technology

Facing the problem of insufficient capacity of the water plant, some of the water supply areas currently belonging to the water plant can be replaced by opening the reserved DN1000 pipe in the short term, but the amount of this part is very limited, estimated at about 20,000 tons / day, far away It is far from reaching the long-term expected scale of the city's water plant. In order to meet the demand for water supply, how to expand the production capacity of the water plant has become an urgent problem to be solved.

[0003] In response to this problem, the conventional approach is to expand the second phase of the project. Assuming that the second phase of the project is calculated at 200,000 tons / day, the expected construction time is 2 years, and the investment capital is about 200 million yuan (only considering the construction of sedimentation tanks and filters) pool, and the rest only add equipment); the long construction period and huge investment in the expansion cannot meet the city's development needs in the short term; at the same time, when conventional water plants perform advanced water treatment, they combine figure 1 Generally, reaction sedimentation tank 1a→sand filter 2a→activated carbon filter 3a→clean water tank 4a is adopted, and reaction sedimentation tank 1a→activated carbon filter 3a→sand filter 2a→clear water tank 4a is used. A small part of this series connection has overriding Pipe 5a, with the help of the bypass switch 51a on the bypass pipe 5a, directly short-circuit a certain section to adjust the production capacity, but so far, there is no design or practice to reserve parallel pipelines for the activated carbon filter and the sand filter way of doing

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