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Method for designing rainwater treatment and utilization facility

A design method and technology for treatment facilities, applied to waterway systems, sewage discharge, water supply devices, etc., can solve problems such as runoff water quality conditions that are not considered

Active Publication Date: 2011-12-21
北京东方利禾景观设计有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, although the volume calculation of rainwater treatment and utilization facilities mostly involves the rainwater quality, they only start from the rainfall event control rate and do not take into account the specific runoff water quality conditions

Method used

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  • Method for designing rainwater treatment and utilization facility
  • Method for designing rainwater treatment and utilization facility
  • Method for designing rainwater treatment and utilization facility

Examples

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Embodiment Construction

[0044] Below is example with Beijing urban area roof runoff rainwater, utilizes the method of the present invention, discusses the simulation determination method of design rainfall, calculates and designs and builds a rainwater pool (runoff coefficient 0.86, catchment area 2000m 2 ):

[0045] In this paper, taking Beijing urban roofs as an example and combining the roof water quality conditions in Beijing urban areas, the Chicago rain pattern with a rainfall duration of 24 hours and a rain peak coefficient of 0.4 was used to simulate the water volume of the SWMM model. Let the roof catchment area be 2000m 2; Because there is a strong correlation between SS and other pollutants, SS is used as a key indicator of pollutant control in runoff rainwater when conducting water quality simulation studies. The average value of the correlation coefficient between COD and SS in rainwater runoff in Beijing is about 0.97, approximately 1.0, the COD pollution load can be used to approximat...

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Abstract

The invention relates to a method for designing a rainwater treatment and utilization facility. The method comprises site selection of the rainwater treatment and utilization facility, selection of a facility type and calculation of a facility volume, wherein the facility volume WQV (namely water quality volume in the field terms) is calculated through the following five specific steps of: 1, taking a main parameter value; 2, substituting the parameter value into SWMM model software; 3, obtaining an optimal designed rainfall table and determining a range of optimal designed rainfall; 4, obtaining an accurate value of the optimal designed rainfall according to years of data and control targets; and 5, calculating the volume of the rainwater treatment and utilization facility through a WQV formula. The method designs and constructs the rainwater treatment and utilization facility for rainwater collection and utilization on the premise of controlling the pollution by using the initial runoff control rainfall as a main control factor during runoff pollution control in the prior art.

Description

technical field [0001] The invention relates to a design method of rainwater treatment and utilization facilities. Background technique [0002] Rainwater treatment and utilization facilities have become more and more popular in recent years, and their design and construction have formed a vast industry. During the rainfall process, a large amount of pollutants are washed and washed into the water body by surface runoff, which also causes water pollution and deterioration. To improve the quality of water environment, effective runoff pollution control is crucial. Especially with the acceleration of urbanization, the proportion of impermeable catchment surfaces (such as roofs, hardened roads, squares, parking lots, etc.) is increasing. The water quality of the runoff rainwater from these catchments changes with the rainfall process, and there is an obvious phenomenon of initial erosion, which is manifested by the high concentration of pollutants in the initial runoff, and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E03F1/00
Inventor 李海燕李小雪车伍黄延
Owner 北京东方利禾景观设计有限公司
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