System and method for comprehensive management of plain subcritical flow and beheaded branch river water body

A comprehensive treatment, plain technology, applied in chemical instruments and methods, water/sewage treatment, biological water/sewage treatment, etc., can solve problems such as poor technical purification effect, and achieve the effect of improving the hydrodynamic conditions of water bodies

Active Publication Date: 2018-08-24
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem of poor purification effect in existing plain slow flow and Duotou Zhibang treatment technologies,

Method used

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  • System and method for comprehensive management of plain subcritical flow and beheaded branch river water body
  • System and method for comprehensive management of plain subcritical flow and beheaded branch river water body
  • System and method for comprehensive management of plain subcritical flow and beheaded branch river water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as figure 1 , figure 2 with image 3 As shown, in the present embodiment, the system for the comprehensive management of plain slow flow and broken head branch water body includes a filter treatment device 2 and a jet lift device 3, the filter treatment device 2 is arranged on the embankment 1, and the jet lift device 3 set on the water;

[0053] The filtration treatment device 2 includes a peat filter 21 and a biofilter, and the peat filter 21 is connected to the biofilter; wherein the peat filter 21 can realize physical filtration of large-scale suspended impurities based on duckweed, peat The filter 21 is composed of inner and outer layers of perforated PVC pipes with different diameters. The length of the PVC pipes is 600 mm. The diameters of the inner and outer layers of PVC pipes are respectively 50 mm and 110 mm. The surface of the inner layer of PVC pipes is staggered with filter holes with a diameter of 10 mm. A water inlet is provided above the inner ...

Embodiment 2

[0057] Such as figure 1 , figure 2 with image 3 As shown, in the present embodiment, the system for the comprehensive management of plain slow flow and Duantouzhibang water body, on the basis of Embodiment 1, the biofilter includes a humus filler layer 24 and a crushed stone layer 25, and the humus The packing layer 24 is located above the crushed stone layer 25 , and the outlet pipe 26 is connected to the bottom of the crushed stone layer 25 . Among them, the humic filler layer 24 is filled with humic filler, and the humic filler passes through a 20mm sieve, and the crushed stone layer 25 is filled with crushed stones with a particle size of 20-40mm. In specific applications, 20mm, 22mm, 24mm, 26mm can be selected. , 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm and other values, the thickness of the gravel layer 25 is 150mm.

[0058] The setting of humus filler layer 24 in the present embodiment, this provides anaerobic / aerobic environment for the microorganism on humus fill...

Embodiment 3

[0060] Such as figure 1 , figure 2 with image 3 As shown, in the present embodiment, the system of slow flow in the plain and the comprehensive management of the water body of the head of the branch, on the basis of embodiment 1 or 2, the peat filter 21 is connected with the biofilter through the triangular weir 23; the triangular The water distribution weir 23 is arranged on the top of the biofilter to achieve uniform water distribution, so that the water entering the biofilter can be evenly dispersed into the humus filler layer 24; the triangular water distribution weir 23 is an open channel with triangular weir openings on the sides, and The elevation of the bottom of the open channel is the same, and the height of the triangular weir is also kept the same; in addition, the peat filter 21 is set on the first base 22, and the biological filter is set on the second base 27, and the height of the first base 22 is equal to that of the biological filter. and the height of th...

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Abstract

The invention discloses a system and a method for comprehensive management of a plain subcritical flow and beheaded branch river water body and belongs to the field of water environment management. The system comprises a filtering treatment device and a jet-flow lifting device; the method comprises the following steps: lifting a water body of river water to the filtering treatment device on an embankment by utilizing the jet-flow lifting device; then carrying out combined purification of physical filtering and biological degradation; enabling the treated water to self-reflow back to the riverwater, so as to form circulating treatment of the plain subcritical flow and beheaded branch river water body. Aiming at the problem that an existing plain subcritical flow and beheaded branch river management technology is poor in the purification effect, the invention provides the system and the method for the comprehensive management of the plain subcritical flow and beheaded branch river waterbody. By adopting the system and the method, disclosed by the invention, the problems that the water quality of a plain subcritical flow and beheaded branch river is worsened, and algae and duckweedbreak out can be remarkably improved and continuous improvement of the water quality is realized.

Description

technical field [0001] The invention belongs to the field of water environment management, and in particular relates to a system and method for comprehensive management of plain slow flow and duantouzhibang water body. Background technique [0002] The Taihu Lake Basin has a large population and developed industry and agriculture. It is one of the most economically developed regions in my country. However, the consumption of natural resources has caused the ecological environment in the Taihu Lake Basin to deteriorate, especially water pollution and eutrophication. [0003] River pollution sources can be divided into two categories: point sources and non-point sources, among which point sources mainly include urban point sources (including urban domestic and industrial sewage) and rural point sources (livestock and poultry breeding and rural domestic sewage), and non-point sources mainly include agricultural non-point sources. source and initial rainfall. In recent years, w...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30
CPCC02F1/001C02F1/283C02F3/301C02F3/302C02F2103/007C02F2201/009
Inventor 吴军丁慧羽张浩然郭贤发陈梦雪贾瑞琦李丹阳李志远朱俊伟杨智力肖升陈东标薛王峰罗志锋李智
Owner NANJING UNIV
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