CN103539290A

CN103539290A - Algae removal device for water body

Info

Publication number: CN103539290A
Application number: CN201310550277.7A
Authority: CN
Inventors: 谭凤训; 成小翔; 武道吉; 王菲; 许兵
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2014-01-29

Abstract

The invention relates to an algae removal device for a water body. The device comprises a water lifting tube, an algae filter, a tubular mixer, a lifting pump, a water injector and a hydrocyclone separator sequentially connected. The tubular mixer is provided with a dosing opening which is connected with a dosing device, the water injector is provided with a gas-guide tube, a cone-shaped overflow port is arranged at the top of the hydrocyclone separator, and a bottom flow port is arranged at the bottom of the hydrocyclone separator. Part of algae and solid impurity particles in raw water are removed by the algae filter. The dosing device casts a permanganate complex reagent and a flocculant into the tubular mixer, so that the reagent is fully mixed with the water body. The dosed raw water enters into the water injector to form a gas-liquid mixture in the water injector. The gas-liquid mixture enters into the hydrocyclone separator to separate algae matters and the water body. The device provided by the invention effectively combines gas flotation and hydrocyclone separation, and the cone-shaped overflow port is arranged at the top of the hydrocyclone separator, so that the separation efficiency is further improved. The device has the advantages of convenience in operation, low energy consumption and high algae removal efficiency.

Description

A kind of water body algae-removing device

Technical field

The present invention relates to a kind of technology of Hydrocyclone Scperation that adopts the lake as drinking water source, reservoir water are removed to the pretreated device of algae, belong to water body algae removal technology field.

Background technology

Mankind's activity increasingly sharpens on the impact of aquatic ecosystem, causes the amount reproduction metabolism of Measures of Algae in Water Body, causes water quality deterioration, and the structure and function of the ecosystem is destroyed.Meanwhile, algae can produce toxin, and the mankind and hydrocoles are brought to great harm, especially as lake, the serious threat of reservoir water body alga eruption of drinking water source, resident's drinking water safety.Conventional hydrocyclone separation technology device is being brought into play certain advantage aspect oil removing, desanding at present, but limited in one's ability for the removal of algae.

Device for sterilizing and removing alga > > in CN102262008A < < water sample pretreatment system, its structure is, two imports of the outlet of ozonizer ozone and scavenging pump water outlet pipeline connecting tee, the outlet of described threeway is connected with anti-cleaning valve, spray valve inlet pipeline respectively, described anti-cleaning valve outlet connects respectively the import of settling pit sampling valve and sampling conduit, and described spray valve outlet is connected with the spray header pipeline that is placed in sedimentation basin top.This apparatus structure is complicated, carries out the sterilization algae removing of water sample by ozonizer and spray, can not guarantee except algae effect.

Summary of the invention

The problem existing for existing water body algae removal technology, the invention provides a kind of easy to operate, energy consumption is low, except the effective water body algae-removing device of algae.This device has increased water sprayer gas injection system on the basis of common waterpower cyclone separation device, air supporting flotation technology and cyclone separation process is combined, thereby realize the separated of algae and water body, to reach the object except algae.

Water body algae-removing device of the present invention, the concrete technical scheme of employing is as follows:

This algae-removing device, comprise the water lift pipe, algae strainer, tube mixer, lift pump, water sprayer and the hydrocyclone that are connected in turn, on water lift pipe, be provided with algae strainer, tube mixer is provided with dosing mouth, this dosing mouth is connected with chemicals dosing plant, water sprayer is provided with airway, and hydrocyclone top is provided with taper overflow port, and bottom is provided with underflow opening;

Containing the former water of algae, by water lift pipe, enter algae strainer, part algae and the barred of solid impurity particle, the water after filtration enters tube mixer; By chemicals dosing plant, to tube mixer dosing mouth, add permanganate composite chemical and flocculation agent, permanganate composite chemical dosage is 0.5-1.5mg/L, and flocculation agent adopts polymerize aluminum chloride (PAC), and dosage is 10-30 mg/L; In tube mixer, medicament and water body fully mix, and permanganate composite chemical is to former water preoxidation, to improve except algae efficiency, reduce the algae substances content in water outlet, meanwhile, part algae substances forms macrobead flco with the colloidal particle in former water and suspended particulate; Former water after dosing promotes and enters water sprayer through lift pump, and air injects water body by the airway on water sprayer, forms gas liquid mixture; Gas liquid mixture enters hydrocyclone, at gas in hydrocyclone, in water body, discharge, microbubble carries algae substances and is overflowed by the taper overflow port at hydrocyclone top, with water outlet, the underflow opening by hydrocyclone bottom flows out solid macrobead, realizes the separated of algae substances and water body.

The present invention is by air supporting flotation and the effective combination of cyclonic separation, and hydrocyclone top adopts the water outlet of taper overflow port (to increase overflow port place volume, reduce the center pressure of cyclone separator, be conducive to gas discharges from water body, thereby realize gas-liquid separation, improve the separating effect of algae substances and water body), further improved separation efficiency, have easy to operate, energy consumption is low, except the high advantage of algae efficiency, be particularly useful for the easy outburst of algae and lower lake, the reservoir water of turbidity to remove algae pre-treatment.

Accompanying drawing explanation

Fig. 1 is the structural principle schematic diagram of water body algae-removing device of the present invention.

In figure: 1, containing the former water of algae, 2, water lift pipe, 3, algae strainer, 4, chemicals dosing plant, 5, tube mixer, 6, lift pump, 7, water sprayer, 8, airway, 9, air, 10, hydrocyclone, 11, taper overflow port, 12, algae substances, 13, underflow opening, 14, water outlet.

Embodiment

As shown in Figure 1, algae-removing device of the present invention, is mainly comprised of water lift pipe 2, algae strainer 3, chemicals dosing plant 4, tube mixer 5, lift pump 6, water sprayer 7 and hydrocyclone 10.Water lift pipe 2, algae strainer 3, tube mixer 5, lift pump 6, water sprayer 7 and hydrocyclone 10 are connected in turn.Algae strainer 3 is existing installation, and one end is water-in, and one end is water outlet, and inside is provided with filter basket, and bottom is provided with sewage draining exit, when needs clean, opens the cock on filter bottom sewage draining exit, and the impurity such as algae are discharged by sewage draining exit.Tube mixer 5 is connected with chemicals dosing plant 4 by the dosing mouth on it, and a side of water sprayer 7 is provided with airway 8, and the top of hydrocyclone 10 is provided with taper overflow port 11, and bottom is provided with underflow opening 13.Chemicals dosing plant 4 comprises medicine-adding bin and volume pump, and volume pump is connected with the dosing mouth on tube mixer 5 with medicine-adding bin.

In lake, reservoir containing the former water 1 of algae when water lift pipe 2 enters algae strainer 3, part algae in former water, solid impurity particle are blocked in outside the filter basket of algae filter interior, and water after filtering is discharged by filter outlet, water outlet enters tube mixer 5.By chemicals dosing plant 2, to tube mixer dosing mouth, add permanganate composite chemical and flocculation agent.Different according to raw water quality, permanganate composite chemical dosage is 0.5-1.5 mg/L, and flocculation agent adopts polymerize aluminum chloride (PAC), and dosage is 10-30 mg/L; In tube mixer 5, medicament and water body fully mix.Permanganate composite chemical preoxidation can significantly improve except algae efficiency, thereby reduces the algae substances content in water outlet, and meanwhile, part algae substances forms macrobead flco with the colloidal particle in former water and suspended particulate.Former water after dosing promotes and enters water sprayer 7 through lift pump 6.In the airway 8 of air 9 from water sprayer 7, inject water body, form gas liquid mixture.Gas liquid mixture enters hydrocyclone 10, at the interior gas of hydrocyclone 10, in water body, discharge, microbubble carries algae substances 12 and is overflowed by the taper overflow port 11 at hydrocyclone 10 tops, with water outlet 14, the underflow opening 13 by hydrocyclone 10 bottoms flows out solid macrobead, realizes the separated of algae substances 12 and water body.

Water sprayer 7 is existing general devices in water that air is dissolved in, and nozzle, suction chamber, diffuser pipe three parts, consists of, and former current are when the diffuser pipe of water sprayer, and because cross-sectional area reduces, flow velocity raises, and current spray from nozzle with higher speed.When swiftly flowing liquid passes through suction chamber, can form vacuum at suction chamber, by airway 8, suck large quantity of airs, air acutely mixes with liquid after entering suction chamber, forms gas liquid mixture, by diffuser pipe, is discharged.Air rises with trickle bubble in water body, forms efficient material transfer in whole process.The water outlet of water sprayer 7 enters hydrocyclone 10.

Hydrocyclone 10 is for realizing the algae substances device separated with water body in the present invention, this device is designed to taper by the overflow port on the existing general hydrocyclone top for water body oil removing, desanding, do like this and contribute to increase overflow port place volume, reduce the center pressure of cyclone separator, be conducive to gas discharges from water body, thereby realize gas-liquid separation, improve the separating effect of algae substances and water body.Under the effect of centrifugal force, microbubble is migrated to the core place of hydrocyclone 10 carrying algae and partial suspended particulate matter, forms inward eddy, and, to the 11 places motion of taper overflow port, finally discharge from upper end toper overflow port 11 on rotation limit, limit; Meanwhile, solid macrobead moves to swirler limit wall, forms outer eddy flow, and is discharged by underflow opening 13 with water outlet 14, thereby realizes the separated of algae substances and water body.

Claims

1. a water body algae-removing device, it is characterized in that: comprise the water lift pipe, algae strainer, tube mixer, lift pump, water sprayer and the hydrocyclone that are connected in turn, on water lift pipe, be provided with algae strainer, tube mixer is provided with dosing mouth, this dosing mouth is connected with chemicals dosing plant, water sprayer is provided with airway, and hydrocyclone top is provided with taper overflow port, and bottom is provided with underflow opening;

Containing the former water of algae, by water lift pipe, enter algae strainer, part algae and the barred of solid impurity particle, the water after filtration enters tube mixer; By chemicals dosing plant, to tube mixer dosing mouth, add permanganate composite chemical and flocculation agent, permanganate composite chemical dosage is 0.5-1.5mg/L, and flocculation agent adopts polymerize aluminum chloride, and dosage is 10-30 mg/L; In tube mixer, medicament and water body fully mix, and permanganate composite chemical is to former water preoxidation, to improve except algae efficiency, reduce the algae substances content in water outlet, meanwhile, part algae substances forms macrobead flco with the colloidal particle in former water and suspended particulate; Former water after dosing promotes and enters water sprayer through lift pump, and air injects water body by the airway on water sprayer, forms gas liquid mixture; Gas liquid mixture enters hydrocyclone, at gas in hydrocyclone, in water body, discharge, microbubble carries algae substances and is overflowed by the taper overflow port at hydrocyclone top, with water outlet, the underflow opening by hydrocyclone bottom flows out solid macrobead, realizes the separated of algae substances and water body.