CN-122006340-A - Sedimentation tank for river purification water intake

Abstract

The invention relates to the technical field of rainfall flood runoff water intake, in particular to a sedimentation tank for river purification water intake. Comprises a sedimentation tank and a vertical wall; a filtering space is arranged at the water inlet of the sedimentation tank, a small hole for filtering impurities in water is arranged on the filtering space, a vertical wall is arranged on the right side of the sedimentation tank, the sedimentation tank is divided into a left sedimentation space and a right sedimentation space by the vertical wall, and the filtering space is arranged above the left sedimentation space; the invention realizes the multistage filtration and precipitation of rainfall runoff, improves the water quality purification effect, has the self-adaptive water quantity adjusting capability, adapts to the fluctuation characteristic of river water quantity, and ensures the stable operation of the purification water taking system.

Inventors

• CAO JIANSHENG
• SHEN YANJUN
• Min Leilei
• YANG HUI

Assignees

• 中国科学院遗传与发育生物学研究所农业资源研究中心

Dates

Publication Date

20260512

Application Date

20230303

Claims (5)

1. 1. A sedimentation tank for river purification water intake is characterized by comprising a sedimentation tank (4) and a vertical wall (402), wherein a filtering space (401) is arranged at the water inlet of the sedimentation tank (4), small holes for filtering impurities in water are formed in the filtering space (401), the vertical wall (402) is fixed on the right side of the sedimentation tank (4), the sedimentation tank (4) is divided into a left sedimentation space and a right sedimentation space by the vertical wall (402), and the filtering space (401) is arranged above the left sedimentation space.
2. 2. The sedimentation tank for purifying water from a river channel according to claim 1, wherein a filter layer (403) for purifying water source is arranged above the filter space (401).
3. 3. The sedimentation tank for river channel purification water intake of claim 2, wherein the filter layer (403) comprises a cobble layer (404), a fine sand layer (405), a coarse sand layer (406) and a stone layer (407) from bottom to top.
4. 4. The sedimentation tank for river purification water intake of claim 1, wherein two groups of overflow channels (408) are symmetrically arranged on two sides of the filtering space (401).
5. 5. A sedimentation tank for river purification water as set forth in claim 4 wherein one set of said overflow channels (408) has a height less than the height of the other set.

Description

Sedimentation tank for river purification water intake Technical Field The invention relates to the technical field of rainfall flood runoff water intake, in particular to a sedimentation tank for river purification water intake. Background Climate change represented by global warming and extreme weather event frequent occurrence affects survival and development of all human beings deeply, is a great challenge faced by various countries, and particularly needs to stand in the countries of arid and semi-arid regions at some places to be in harmony with nature to actively cope with a series of risk challenges brought by serious natural disasters; The seasonal river is a river which is particularly obviously affected by seasons in one year, the change rule of the river seasons is different along with the supply of various river water sources, the river which is mainly supplemented by rainwater mainly changes along with the change of the rainfall seasons, the river which is mainly supplemented by ice and snow and glacial molten water is more in summer and autumn, less in winter and even is cut off, the reasonable utilization of the seasonal rainwater becomes particularly important, the problems that the conventional sedimentation tank for taking water from the river is single in structural design, insufficient in filtration level, poor in water quantity regulation capability and the like generally exist, the fluctuation characteristics of the runoff water quantity of the river cannot be adapted, the conditions of insufficient filtration and low precipitation efficiency easily occur under the condition of large water quantity, the content of water sediment and impurities is higher, and the water quality requirement of daily water is difficult to meet. Disclosure of Invention Aiming at the technical defects, the invention provides the sedimentation tank for purifying and taking water in the river channel, which realizes the multi-stage filtration and sedimentation of rainfall runoff, improves the water quality purifying effect, has the self-adaptive water quantity adjusting capability, adapts to the fluctuation characteristic of the river channel water quantity and ensures the stable operation of a purifying and water taking system. In order to solve the technical problems, the sedimentation tank for river channel purification water taking comprises a sedimentation tank and a vertical wall, wherein a filtering space is arranged at the water inlet of the sedimentation tank, small holes for filtering impurities in water are formed in the filtering space, the vertical wall is arranged on the right side of the sedimentation tank, the sedimentation tank is divided into a left sedimentation space and a right sedimentation space by the vertical wall, and the filtering space is arranged above the left sedimentation space. Preferably, a filter layer for purifying the water source is arranged above the filter space. Preferably, the filter layer is a cobble layer, a fine sand layer, a coarse sand layer and a stone layer from bottom to top. Preferably, two groups of overflow channels are symmetrically arranged on two sides of the filtering space. Preferably, the height of one group of overflow channels is smaller than the height of the other group. Compared with the prior art, the invention has the following advantages: The sedimentation tank realizes the integrated water purification of preliminary filtration, deep filtration and multistage sedimentation through the structural design of the pre-filtration of the filtration space and the separation of the vertical walls into double sedimentation spaces, so that the sediment and impurity content in rainfall flood runoff is greatly reduced, and the effluent quality meets the daily production and living water requirement; Two groups of overflow channels with different heights are arranged on two sides of the filtering space, so that self-adaptive automatic adjustment can be realized according to the water quantity of a river channel, water flows are filtered and precipitated in a whole flow process when the water quantity is small, and the water body which flows out when the water quantity is large is shunted through the overflow channels, so that overload operation of the filtering space is avoided, the characteristics of adaptation of storm flood runoff water quantity storm and stable operation of a sedimentation tank are ensured; 3. The whole structure is simple and reasonable in design, low in construction and construction difficulty, capable of being directly connected with the energy dissipation pond and the reservoir of the river channel purification water taking system in a seamless mode, high in adaptability, convenient to popularize and apply in the purification water taking engineering of seasonal rivers, and capable of providing a stable clean water source for arid seasons. Drawings FIG. 1 is a schematic structural diagram of a sedimentation tank for river purificat