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Method for rapidly cleaning and purifying small algae-rich water body

A water body, rapid technology, applied in the field of water treatment, can solve the problems of animal and plant poisoning, slow effect, long cycle, etc.

Pending Publication Date: 2021-11-02
HUATIAN NANJING ENG & TECH CORP MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the methods for quickly removing cyanobacteria are flocculation algae removal, chemical algae killing, etc., which are toxic to animals and plants, and are currently banned by the country; and ecological algae removal (including zooplankton, fish, aquatic plants, etc.) The method often has a long cycle and slow effect, and cannot achieve the purpose of rapid algae removal

Method used

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  • Method for rapidly cleaning and purifying small algae-rich water body

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Effect test

Embodiment 1

[0028] This embodiment is carried out in a laboratory, taking urban river water rich in cyanobacteria, the concentration of chlorophyll a is 2.1433 μg / L, the total phosphorus is 0.52 mg / L, and the concentration of ammonia nitrogen is 3.2 mg / L. Water is pumped into this device by water inlet pipe, kaolin 10%, bentonite 10%, PAC80% in the feed bin, feed speed makes in the described algae removal device, PAC concentration is 0.9mg / L. The residence time of the secondary sedimentation tank is 4 hours, and the effluent enters the deionization device.

[0029] The final effluent concentration reaches 0 chlorophyll concentration, 0.001mg / L total phosphorus concentration, and 0mg / L ammonia nitrogen concentration.

Embodiment 2

[0031] This embodiment is carried out in a landscape pond in Huashan District, Ma'anshan City. The landscape pond has an area of ​​64 square meters and a depth of 1.2 meters. Due to the lack of water change in the landscape pond, the temperature is high in summer and blue-green algae blooms. The device is arranged by the pond for water purification and algae removal. The initial water quality of the pond water was 1.2893 μg / L of chlorophyll a, 1.33 mg / L of total phosphorus, and 2.3 mg / L of ammonia nitrogen. Water is pumped into this device by water inlet pipe, kaolin 10%, bentonite 10% in the feeding bin, PAC 80%, and feeding speed makes in described algae removing device, PAC concentration is 0.4mg / L. The residence time of the secondary sedimentation tank is 24 hours, and the effluent enters the deionization device.

[0032] The final effluent concentration reaches 0 chlorophyll concentration, 0.001mg / L total phosphorus concentration, and 0.1mg / L ammonia nitrogen concentrat...

Embodiment 3

[0034] This embodiment is carried out in an independent small lake in a park in Huashan District, Ma'anshan. The water area of ​​this small lake is about 105 square meters, the depth is 0.5 meters to 1.5 meters, the concentration of chlorophyll a is 1.6677 μ g / L, and the total phosphorus is 0.62 mg / L. The concentration of ammonia nitrogen is 2.5mg / L. Water is pumped into this device by water inlet pipe, kaolin 30%, bentonite 20%, PAC 50% in the feeding bin, and feeding speed makes in the described algae removal device, PAC concentration is 0.1mg / L. The residence time of the secondary sedimentation tank is 24 hours, and the effluent enters the deionization device.

[0035] The final effluent concentration reaches 0 chlorophyll concentration, 0.001mg / L total phosphorus concentration, and 0.1mg / L ammonia nitrogen concentration.

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Abstract

The invention discloses a method for rapidly cleaning and purifying a small algae-rich water body. The method comprises the following steps: firstly, filtering, adsorbing and flocculating algae-rich water by using an algae removal device; using a secondary precipitation device for precipitating the effluent of the algae removal device; and retreating the precipitated effluent through a deionizing device. According to the invention, through a bypass purification mode, the agent with biotoxicity is used for purifying the water body in the bypass, and the quality of the effluent is ensured while algae are removed, so that the algae can be rapidly removed, meanwhile, animals and plants in the water body are protected, and the purposes of cleaning, rapidly removing the algae and purifying the water quality are achieved.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a process and device for quickly cleaning and purifying small algae-rich water bodies. Background technique [0002] With the intensification of human activities in river and lake basins, a large amount of nutrients enter the water body through various channels, making rivers and lakes enter a state of eutrophication. The eutrophication of rivers and lakes will be a major water environment problem in my country at present and for a long period of time in the future. A common phenomenon accompanying eutrophication of water bodies is the excessive growth of phytoplankton and the formation of algae blooms, which will lead to water quality problems. A series of water environment problems such as decline and ecosystem disease. Since the development of various algae control technologies, according to the algae removal method, it can be mainly divided into: flocculation algae re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F2103/007C02F1/001C02F1/281C02F1/283C02F1/5236C02F1/441C02F2001/007
Inventor 何宇虹周麒麟朱红生费晓昕
Owner HUATIAN NANJING ENG & TECH CORP MCC
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