CN101139113A

CN101139113A - High-efficienct algae-removing and clean water reduction method

Info

Publication number: CN101139113A
Application number: CNA2007100660800A
Authority: CN
Inventors: 李贵生; 段天行
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-03-12
Anticipated expiration: 2027-08-01
Also published as: CN101139113B

Abstract

The present invention relates to a method to eliminate blue green algae highly effectively and reduce rinsing. The present invention relates to a solution to polluted water region, in particular to the method to eliminate the blue green algae in lake areas polluted by blue green algae. The method of the present invention is that (1) preparing stripping solution, each component is mixed according to the weight ratio that calcium oxide is 3 to 6 percent, sodium chloride is 10 to 15 percent and the rest is aluminium sulphate and then water is added to prepare into the stripping solution; (2) blue green algae delamination, each kilogram of blue green algae is added with 0.1 to 2 gram stripping solution to mix and then is in static arrangement for 5 to 30 minutes to lead the blue green algae to float on the surface; {3}stripping the blue green algae, the rinsing in the lower layer is sent back to the water region and the rest concentrated blue green algae solution is filtrated, dehydrated and recycled. The method to eliminate blue green algae has the advantages of fast speed, good effect, low investment and cost.

Description

A kind of method of high-efficienct algae-removing and clean water reduction

Technical field

The present invention relates to the improvement method of polluted waters, particularly in the lake waters of blue algae pollution, remove the method for blue algae.

Background technology

Because the increase of eutrophication composition in the rivers and lakes on the earth, the blue algae growth in the waters is rapider, is increased day by day and worsens by the polluted waters of blue algae, and the Taihu Lake of China, Chaohu, Dian Chi are particularly serious.The technology of administering blue algae at present in the world mainly contains physics method, chemical method and biological process, but yet there are no the outstanding effect method up to now.The physics method mainly contains water substitution method and upper strata suction method, and the water substitution method is costly, only is fit to less waters; The upper strata suction method needs a lot of funds and the energy equally, and the removing of blue algae is not thorough, and temperature rises a little, and blue algae can overgrow again.What chemical method adopted is that chemicals kills blue algae, and this method is expensive big, also might cause the chemical pollution in waters, and dead blue algae provides good growth conditions for the blue algae of survival, if opportunity maturation, blue algae still can overgrow.Biological process is the biological jinx who cultures blue algae in water body, and it is very big and necessary careful that this method is implemented difficulty, might make new environmental destruction again if this biological self reproducing is too fast.

Summary of the invention

The technical problem that mainly solves of the present invention provides a kind of method of high-efficienct algae-removing and clean water reduction, and its speed of removing blue algae is fast, effective, less investment, and cost is low.

Technical scheme of the present invention is: (1) preparation stripping liquid, by following weight percent each component is mixed, and calcium oxide 3%～6%, sodium-chlor 10%～15%, surplus is a Tai-Ace S 150, adds water then and becomes saturated solution, is prepared into stripping liquid; (2) mixed that the blue algae soiling solution of per kilogram adds 0.1 gram～2 gram stripping liquids is pressed in blue algae layering, leaves standstill 5 minutes～30 minutes again, makes blue algae swim in the water surface; (3) peel off blue algae, send lower floor's clear water back to waters, remaining dense blue algae liquid is by filtering, dewater, reclaiming.

Blue algae soiling solution should stir 2 seconds～10 seconds when mixing with stripping liquid, made mixing more even, accelerated peeling rate.Unavoidably sneak into a certain amount of blue algae in the water that dense blue algae liquid removes, need leave standstill once more and carry out the secondary stripping process, will descend clear liquid to send the waters back to.

The invention has the beneficial effects as follows: the usage quantity of stripping liquid is few, so treatment cost is lower; Stripping liquid has fine come-up effect at blue algae, make the blue algae that spreads in the whole water body effectively with the water body layering, be more convenient for removing fast; The consumption of stripping liquid seldom, main effect is to impel blue algae come-up, also has certain inhibition growth effect simultaneously, and other biological in the water body is not had harm, can not cause chemical pollution.

The present invention and existing other are removed the contrast of blue algae method: experimental scale of the present invention is amplified, and the processing costs of the blue algae sewage in waters, Dian Chi is below 8 yuan/ton, and it is limpid to reach the layering of range estimation effect water body in 30 minutes, the no naked eyes grain that as seen suspends; Adopt existing physical filtering method, the processing costs of the blue algae sewage in waters, Dian Chi is 15 yuan～30 yuan/ton, and blue algae still mixes mutually with water body after 2 hours, only at the water surface a small amount of blue algal layer is arranged; Adopt the same blue algae sewage of chemical treatment, expense is 30 yuan/ton, and needing the time is 6.5 hours, and layered effect is more quite a lot of than physical filtering method, but still the blue algae suspended substance of visible haze.

The present invention handles the assay of blue algae sewage: total phosphorus (in P) is 0.01mg/L, and reaching can a class water index; PH value (zero dimension) is 6, meets 6～9 normal value; DO (dissolved oxygen) is 4.41mg/L, reaches 3～4 class water indexs; BOD ₅(five-day BOD) is 8.4mg/L, reaches 4 class water indexs; COD (chemical oxygen demand (COD)) is 26mg/L, reaches 3 class water indexs; Ammonia nitrogen (NH ₃-N) be 2.8mg/L, exceed standard, reason is the just very high ammonia nitrogen of band of water body self, needs other methods of removing ammonia nitrogen specially to handle; Total nitrogen (Hu Ku is in N) is 11.89mg/L, exceeds standard, and reason is the just very high total nitrogen of band of water body self, needs other methods of removing total nitrogen specially to handle.

Embodiment

Embodiment 1

Get preparation calcium oxide, sodium-chlor and Tai-Ace S 150, each component is mixed by following weight percent, calcium oxide 5%, sodium-chlor 10% and Tai-Ace S 150 85%, adding water, to be prepared into saturated stripping liquid stand-by; Get 2 kilograms in the blue algae sewage on limit, leeward port, waters, Dian Chi, add the stripping liquid that 4 grams prepare, in the bottle of the diameter 110mm that packs into, rocked 10 seconds, and made sewage and stripping liquid mixing, left standstill again 20 minutes, blue algal layer swims in the water surface, and the transparent clear water of lower floor accounts for 95%, sends lower floor's clear water back to waters.Remaining dense blue algae liquid is by filtering, dewater, reclaiming.To after filtration, the blue algae sewage that obtains of dehydration left standstill 10 minutes, carried out secondary and peeled off, clear water is sent the waters back to, to concentrated blue algae fluid dewatering, the recovery that obtains for twice.

Embodiment 2

Get preparation calcium oxide, sodium-chlor and Tai-Ace S 150, each component is mixed by following weight percent, calcium oxide 3%, sodium-chlor 14% and Tai-Ace S 150 83%, adding water, to be prepared into saturated stripping liquid stand-by; Get 5 kilograms in the blue algae sewage at waters, Dian Chi middle part, add the stripping liquid that 1 gram prepares, in the container of the diameter 200mm that packs into, stirred for 7 seconds, make sewage and stripping liquid mixing, left standstill again 10 minutes, blue algal layer swims in the water surface, and the transparent clear water of lower floor accounts for 95%, sends lower floor's clear water back to waters.Remaining dense blue algae liquid is by filtering, dewater, reclaiming.To after filtration, the blue algae sewage that obtains of dehydration left standstill 5 minutes, carried out secondary and peeled off, clear water is sent the waters back to, to concentrated blue algae fluid dewatering, the recovery that obtains for twice.

Embodiment 3

Get preparation calcium oxide, sodium-chlor and Tai-Ace S 150, each component is mixed by following weight percent, calcium oxide 4%, sodium-chlor 12% and Tai-Ace S 150 84%, adding water, to be prepared into saturated stripping liquid stand-by; Get 300 kilograms in the blue algae sewage on limit, leeward port, waters, Dian Chi, add the stripping liquid that 300 grams prepare, pack in the container of diameter 600mm, stirred for 10 seconds, make sewage and stripping liquid mixing, left standstill 30 minutes again, blue algal layer swims in the water surface, the transparent clear water of lower floor accounts for 95%, sends lower floor's clear water back to waters.Remaining dense blue algae liquid is by filtering, dewater, reclaiming.To after filtration, the blue algae sewage that obtains of dehydration left standstill 20 minutes, carried out secondary and peeled off, clear water is sent the waters back to, to concentrated blue algae fluid dewatering, the recovery that obtains for twice.

Claims

1. the method for a high-efficienct algae-removing and clean water reduction is characterized in that:

(1) the preparation stripping liquid mixes each component by following weight percent, calcium oxide 3%～6%, and sodium-chlor 10%～15%, surplus is a Tai-Ace S 150, adds water then and becomes saturated solution, is prepared into stripping liquid;

(2) mixed that the blue algae soiling solution of per kilogram adds 0.1 gram～2 gram stripping liquids is pressed in blue algae layering, leaves standstill 5 minutes～30 minutes again, makes blue algae swim in the water surface;

(3) peel off blue algae, send lower floor's clear water back to waters, remaining dense blue algae liquid is by filtering, dewater, reclaiming.

2. the method for the blue algae reduction of removing according to claim 1 clear water, it is characterized in that: blue algae soiling solution should stir when mixing with stripping liquid 2 seconds～10 seconds, and the water that dense blue algae liquid removes need leave standstill once more, will descend clear liquid to send the waters back to.