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In-situ pretreatment system suitable for water body from lake type water source

A water source and pretreatment technology, applied in the field of water treatment, can solve problems such as long treatment time, secondary pollution, and little involvement, and achieve the effects of reducing the amount of sediment, preventing pollution, and increasing stability

Active Publication Date: 2020-05-29
ZHEJIANG UNIV OF FINANCE & ECONOMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, water diversion dilution and chemical methods introduce foreign substances into the water body, which changes the ecosystem of the water body itself, which will bring certain negative effects and even produce secondary pollution, while sediment dredging, sediment coverage, and deep water exposure Qi can only work for a period of time, and it can not solve the problem fundamentally. Ecological restoration technology has attracted much attention due to its environmental protection and sustainable development characteristics, but it takes a long time to treat it for a single use.
[0005] Based on the original inertia of "pollution first, treatment later", the existing treatment methods basically focus on how to remove pollutants in water bodies, but seldom involve how to control the source and reduce water body pollution

Method used

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  • In-situ pretreatment system suitable for water body from lake type water source
  • In-situ pretreatment system suitable for water body from lake type water source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 Preparation of filter packing 1

[0043] Weigh 8 parts of bentonite, 6 parts of zeolite, 3 parts of coconut peat, 5 parts of peat soil, 1 part of sepiolite, and 3 parts of cement, stir and mix evenly, dry at 60°C for 3 hours, then ball mill, pass through a 100-mesh sieve, and add Add 20 parts of acrylic resin, then add 20 parts of water and stir to obtain a viscous mixed emulsion, then air into the mixed emulsion in the form of pulses of 5s and 30s intermittently, according to the flow rate of 0.1L / min, while stirring vigorously, to A large number of uniform bubbles appear in the mixed emulsion, immediately add the modified ceramsite according to the solid-liquid ratio of 1g / ml, stir slowly for 1min, remove it, and maintain it at 15°C until the water-retaining layer on the surface of the modified ceramsite is semi-solidified. Apply ultrasonic treatment with a frequency of 25KHz and a power of 120W for 30s. After an interval of 2 minutes, ultrasonic treatmen...

Embodiment 2

[0044] Embodiment 2 Preparation of filter packing 2

[0045] Weigh 5 parts of bentonite, 10 parts of zeolite, 5 parts of coconut peat, 3 parts of peat soil, 2 parts of sepiolite, and 2 parts of cement, stir and mix evenly, dry at 60°C for 3 hours, then ball mill, pass through a 100-mesh sieve, and add Add 15 parts of acrylic resin, then add 20 parts of water and stir to obtain a viscous mixed emulsion, then air into the mixed emulsion in the form of pulses of 5s and 30s intermittently, according to the flow rate of 0.1L / min, while stirring vigorously, until A large number of uniform bubbles appear in the mixed emulsion, immediately add the modified ceramsite according to the solid-liquid ratio of 1g / ml, stir slowly for 1min, remove it, and maintain it at 15°C until the water-retaining layer on the surface of the modified ceramsite is semi-solidified. Apply ultrasonic treatment with a frequency of 25KHz and a power of 120W for 30s. After an interval of 2 minutes, ultrasonic tre...

Embodiment 3

[0046] Embodiment 3 Preparation of filter filler 3

[0047] Weigh 10 parts of bentonite, 5 parts of zeolite, 1 part of coconut peat, 8 parts of peat soil, 1 part of sepiolite, and 5 parts of cement, stir and mix evenly, dry at 60°C for 3 hours, then ball mill, pass through a 100-mesh sieve, and add Add 30 parts of acrylic resin, then add 20 parts of water and stir to obtain a viscous mixed emulsion, then air into the mixed emulsion in the form of pulses of 5s and 30s intermittently, according to the flow rate of 0.1L / min, while stirring vigorously, to A large number of uniform bubbles appear in the mixed emulsion, immediately add the modified ceramsite according to the solid-liquid ratio of 1g / ml, stir slowly for 1min, remove it, and maintain it at 15°C until the water-retaining layer on the surface of the modified ceramsite is semi-solidified. Apply ultrasonic treatment with a frequency of 25KHz and a power of 120W for 30s. After an interval of 2 minutes, ultrasonic treatment...

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Abstract

The invention discloses an in-situ pretreatment system suitable for a water body from a lake type water source, and relates to the technical field of water treatment. The in-situ pretreatment system suitable for lake type water source water disclosed by the invention comprises a pre-filtering area and an advanced treatment area. The pre-filtering area is arranged on the bank side of a water sourceand comprises a water collecting tank and a filtering wall, and the filtering wall is arranged between the water collecting tank and a water body and communicated with the water collecting tank. Theadvanced treatment area comprises a plurality of ecological floating islands, a photocatalysis net is connected between every two adjacent ecological floating islands, and a plurality of organism attachment nets are installed on the lower bottom faces of the ecological floating islands. A plurality of stocking net cages are hung at the ends, away from the ecological floating islands, of the organism attachment nets, and benthic animals are bred in the stocking net cages. The invention discloses an in-situ pretreatment system suitable for lake type water source water, which combines pollutant source control and treatment, and has the advantages of relatively short treatment time and better treatment effect.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an in-situ pretreatment system suitable for lake-type water sources. Background technique [0002] With the rapid economic growth and continuous urbanization of the population, the demand for water in cities and towns is increasing, and the scale of urban water supply has risen sharply. Due to the deteriorating water quality of rivers and limited groundwater exploitation, reservoirs and lakes have gradually become important water supply sources for cities and towns. Many large and medium-sized cities in my country, especially the cities in the middle and lower reaches of the Yangtze River, mostly use lakes and reservoirs as drinking water sources. However, due to point source and non-point source pollution of water bodies, the degree of eutrophication continues to intensify, causing a large number of planktonic algae to grow, and water intake is safe. being threatened. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/10C02F101/30
CPCC02F9/00C02F2103/007C02F2101/16C02F2101/105C02F1/30C02F3/32C02F2001/007C02F2101/30C02F3/00C02F1/281
Inventor 鲁仕宝郑志宏高学睿尚毅梓
Owner ZHEJIANG UNIV OF FINANCE & ECONOMICS
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