CN1065603A

CN1065603A - Activated carbon haydite compounded filter material and manufacture method

Info

Publication number: CN1065603A
Application number: CN 92101515
Authority: CN
Inventors: 王力
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-07
Filing date: 1992-03-07
Publication date: 1992-10-28

Abstract

The invention provides a kind of activated carbon haydite compounded filter material and manufacture method.This filtrate and preparation method's characteristics are to contain SiO ₂, Al ₂O ₃, Fe ₂O ₃, CaOMgO potter's clay in add cork, hardwood flour or bone meal, be placed on that roasting increases the filtrate of making behind its hole again in the airtight container.Its effect is similar to active carbon.

Description

Activated carbon haydite compounded filter material and manufacture method

The present invention is a kind of efficient water treatment activated carbon haydite compounded filter material and manufacture method thereof.

Some organic or inorganic pollutant for being difficult to remove with conventional treatment process (coagulation, precipitation, filtration) can utilize charcoal absorption to handle.

Traditional carbon leaching material absorbing process has following effects:

1, the foreign odor that the foreign odor that deodorizing-remove is caused by acid, oil etc. or other factors cause.

2, discolor-remove by iron, manganese and formed colourities such as plant decomposition product or organic pollution.

3, dechlorination-remove is owing to connect in drinking water and add disinfectant (dechlorination).

4, remove the removal of organic matter-agricultural chemicals, pesticide, chlorinated hydrocabon, aromatic hydrocarbon, compound and BOD and COD etc.

5, remove heavy metal ion such as heavy metal-mercury, chromium.

6, the removal of synthetic detergent.

7, Bing Du removal.

8, the removal of radioactive material.

The application of other advanced water treatment, gas separation, noble metal extraction is also very extensive in addition, and effect is fine.But, because active carbon pellet cost height, by the current market price is 5000～6000 yuan/ton, after having used a period of time active carbon to lose adsorption capacity, if need its active recirculation of recovery to use, must regenerate, the expense of regeneration accounts for 5.5% of new charcoal expense, be about 275～330 yuan per ton, high cost has seriously limited the scope of application of active carbon.Current also do not have breakthrough on solution Activated Carbon Production cost and regeneration cost.

The purpose of this invention is to provide a kind of activated carbon haydite filtrate and the production method thereof similar to active carbon functional.With the filtrate that this method is produced, not only have the identity function with active carbon, and can reduce the cost of filtrate greatly.

The present invention is achieved in that adding particle diameter in containing the potter's clay of following ingredients is wood powder or the bone meal of 0.1～3mm.Potter's clay composition: SiO ₂, 61～66%; Al ₂O ₃, 19～24%; Fe ₂O ₃, 4～9%; CaOMgO, 1.5～3%.Wood powder that adds or bone meal are from the 5%(volume ratio) to 30%, the most desirable.The wood powder that adds does not have strict quality requirement, and cork and hardwood all can.Add water then and fully mix thoroughly, press log production process of active carbon again, be i.e. preliminarily dried (air dry and artificial dry), the material moisture content is dropped to about 20%, then the blank of moulding is put into airtight container and carry out high temperature drying, about 700 ℃ of temperature stopped 15～20 minutes; Carry out roasting then, temperature: 800 ℃～1100 ℃, stopped 5～18 hours, cooling cooling then just obtains activated carbon haydite filtrate briquet.According to different needs, carry out fragmentation and screening processing after can taking direct forming or producing blank, its particle diameter can be made arbitrarily as required.

The economic and technical norms of activated carbon haydite filtrate (main performance is the same with active carbon with range of application) are waterborne in processing:

(1), when filtrate thickness is 1.5～2 meters, filtering linear velocity is 8～20 meters/hour

(2), backwash linear velocity: 28～42 meters/hour;

(3), backwashing time: 4～10 minutes;

(4), wash blanking time: 72～144 hours;

Advantage is: about 100 yuan of production cost per ton is one of 50～60 of an active carbon.30 yuan/ton of regeneration expenses, and can be by the roasting way regeneration of common masonry, cost is 1/8th～12 of an active carbon only, not loss during regeneration.And its rigidity is big than active carbon, can wash for a long time repeatedly, after it loses activity, still can use, particularly have powerful effect aspect the extraction of noble metal especially by ceramic grain filter, it not only can adsorb each heavy metal species, and the purer active carbon of cost hangs down 20～26 times on refining.Shortcoming is that the filtration linear velocity is lower by about 10% than pure active carbon, and bulk density is 400～600kg/m than active carbon big 20～30% ³The clearance of all kinds of polluters is about 90～95% of a pure active carbon.

Claims

1, activated carbon haydite compounded filter material and manufacture method thereof are characterized in containing SiO ₂, _A12O ₃, Fe ₂O ₃, CaOMgO potter's clay in add cork, hardwood flour or bone meal, its best proportioning is that cork, hardwood flour or the bone meal in the potter's clay accounts for 5～30%.

2, mix fully according to the composition distribution ratio of claim 1, shaping and drying was then sent in the airtight container roasting 5～18 hours with dried blank, and temperature is 800～1100 ℃, obtain the finished product blank after the cooling, carry out fragmentation, screening more as required.Also direct forming as required.