Sewage treatment agent with biological activity and preparation method thereof

Abstract

The invention discloses a sewage treatment agent with biological activity and a preparation method thereof. The sewage treatment agent comprises the following components: 10-30 parts of diatomite, 20-40 parts of bentonite, 5-10 parts of iron powder, 5-10 parts of ferric trichloride, 12-20 parts of quick lime, 5-15 parts of activated carbon and 7-11 parts of a microbial agent. The sewage treatment agent with biological activity is quick and convenient to produce and low in cost, contains biological agents, can properly adjust the types and the amount of the biological agents in the treatment agent according to different sewage environments, greatly reduces COD, BOD and SS of the sewage treated by the treatment agent, correspondingly reduces the contents of total nitrogen, total phosphorus and ammonia nitrogen, and has a wide application prospect. The burden of the sewage after-treatment process is relieved; and large-batch production can be realized, a large amount of sewage can be effectively treated within a short time, and the sewage treatment efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a sewage treatment agent with biological activity and a preparation method thereof. Background Art

[0002] Domestic sewage is mainly the discharge water generated by various kitchen water, washing water and toilet water used in human life, mostly non-toxic inorganic salts. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar, fat protein, etc.; organic suspended matter in domestic sewage and activated sludge will flocculate and precipitate during the sedimentation process. Although it has a certain effect, the overall flocculation time is relatively long, and it cannot meet the needs of rapid flocculation to achieve clean water quality. Domestic sewage contains high levels of nitrogen, sulfur and phosphorus, and is prone to produce odorous substances under the action of anaerobic bacteria.

[0003] At present, the traditional activated sludge method, oxidation ditch, SBR and other mature and effective treatment processes are widely used in various places. However, for a period of time, the construction of urban sewage treatment plants in my country has been hindered by high energy consumption and high operating costs. There is a need for a sewage treatment agent that is easy to use and has low production costs, can solve the pollution caused by heavy metal sewage from the source, purify heavy metal sewage, meet the national sewage discharge standards, and will not cause secondary pollution to the nature. The traditional formula is advanced to increase the sewage treatment time, which can meet the needs of large-scale sewage treatment. Summary of the invention

[0004] The purpose of the invention is to provide a sewage treatment agent with biological activity and a preparation method thereof, which solves the problems in the background technology.

[0005] The present invention is achieved in this way: a biologically active sewage treatment agent comprises the following components: 10-30 parts of diatomaceous earth, 20-40 parts of bentonite, 5-10 parts of iron powder, 5-10 parts of ferric chloride, 12-20 parts of quicklime, 5-15 parts of activated carbon and 7-11 parts of bacterial agent.

[0006] A further technical solution of the present invention is that the bacterial agent includes at least one of yeast, nitrifying bacteria and denitrifying bacteria.

[0007] A further technical solution of the present invention is that the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast and 2-6 parts of nitrifying bacteria.

[0008] A further technical solution of the present invention is that the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast and 2-6 parts of denitrifying bacteria.

[0009] A further technical solution of the present invention is: the biologically active sewage treatment agent includes the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast, 3 parts of denitrifying bacteria and 3 parts of nitrifying bacteria.

[0010] The present invention is achieved by a method for preparing a biologically active sewage treatment agent, the method for preparing a biologically active sewage treatment agent comprising the following steps:

[0011] Step 1: Diatomaceous earth modification: calcining the diatomaceous earth for 3 hours, and soaking the calcined diatomaceous earth in an ethanol solution to obtain modified diatomaceous earth;

[0012] Step 2: Demagnetization: Demagnetize the iron powder by heating it in an inert atmosphere to obtain magnetite-free powder;

[0013] Step 3: Mixing: Add non-magnetic powder, ferric chloride, quicklime, activated carbon and water to the modified diatomaceous earth in proportion, mix and stir to obtain a mixture.

[0014] Step 4: Drying: Drying the mixture to obtain a block mixture;

[0015] Step 5: Mashing: Mashing the block mixture into a powdery semi-finished product;

[0016] Step 6: Add bacterial agent to the powder-like semi-finished product and mix evenly to obtain the finished sewage treatment agent.

[0017] A further technical solution of the present invention is: the diatomite modification in step 1 is: calcining the diatomite at 300-500°C for 1-3 hours, and then soaking the calcined diatomite in 40-50% ethanol for 20-40 minutes.

[0018] A further technical solution of the present invention is: the temperature of heating demagnetization in the step 2 is: 300-500° C., and the demagnetization time is: 1-3 hours.

[0019] A further technical solution of the present invention is: in the step 4, the drying temperature is 300-500° C., and the drying time is 1-3 hours.

[0020] The beneficial effects of the present invention are as follows: the biologically active sewage treatment agent of the present invention is quick and convenient to produce, has low cost, and is provided with biological bacteria. The type and amount of the bacteria in the treatment agent can be appropriately adjusted according to different sewage environments. The COD, BOD and SS of the sewage treated with the treatment agent are greatly reduced, and the total nitrogen, total phosphorus and ammonia nitrogen contents are also reduced accordingly, thereby reducing the burden of the sewage post-treatment process; and the treatment agent can be mass-produced, and a large amount of sewage can be effectively treated in a short time, thereby greatly improving the sewage treatment efficiency. DETAILED DESCRIPTION

[0021] Embodiment 1: A biologically active sewage treatment agent, the biologically active sewage treatment agent comprising the following components: 10-30 parts of diatomaceous earth, 20-40 parts of bentonite, 5-10 parts of iron powder, 5-10 parts of ferric chloride, 12-20 parts of quicklime, 5-15 parts of activated carbon, 7-11 parts of bacterial agent; the bacterial agent comprises: at least one of yeast, nitrifying bacteria and denitrifying bacteria; the biologically active sewage treatment agent comprising the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 12-20 parts of quicklime, 5-15 parts of activated carbon, 7-11 parts of bacterial agent 6 parts, activated carbon 10 parts, yeast 5 parts and nitrifying bacteria 2-6 parts; the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, yeast 5 parts and denitrifying bacteria 2-6 parts; the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, yeast 5 parts, denitrifying bacteria 3 parts and nitrifying bacteria 3 parts.

[0022] Embodiment 2: A biologically active sewage treatment agent, the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 15 parts of quicklime, 10 parts of activated carbon, and 9 parts of bacterial agent; the bacterial agent comprises: at least one of yeast, nitrifying bacteria and denitrifying bacteria; the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast and 2-6 parts of nitrifying bacteria; the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast and 2-6 parts of denitrifying bacteria; the biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast, 3 parts of denitrifying bacteria and 3 parts of nitrifying bacteria.

[0023] The biologically active sewage treatment agent of the present invention is quick and convenient to produce, has low cost, and contains biological bacteria. The type and amount of the bacteria in the treatment agent can be appropriately adjusted according to different sewage environments. The COD, BOD and SS of the sewage treated with the treatment agent are greatly reduced, and the total nitrogen, total phosphorus and ammonia nitrogen contents are also reduced accordingly, thereby reducing the burden of the sewage post-treatment process; and it can be produced in large quantities, and a large amount of sewage can be effectively treated in a short time, thereby greatly improving the sewage treatment efficiency.

[0024] Embodiment 3: A method for preparing a sewage treatment agent having biological activity, the method for preparing a sewage treatment agent having biological activity comprising the following steps:

[0025] Step 1: Diatomaceous earth modification: calcining the diatomaceous earth for 3 hours, and soaking the calcined diatomaceous earth in an ethanol solution to obtain modified diatomaceous earth;

[0026] Step 2: Demagnetization: Demagnetize the iron powder by heating it in an inert atmosphere to obtain magnetite-free powder;

[0027] Step 3: Mixing: Add non-magnetic powder, ferric chloride, quicklime, activated carbon and water to the modified diatomaceous earth in proportion, mix and stir to obtain a mixture.

[0028] Step 4: Drying: Drying the mixture to obtain a block mixture;

[0029] Step 5: Mashing: Mashing the block mixture into a powdery semi-finished product;

[0030] Step 6: Add the bacterial agent to the powder-like semi-finished product and mix them evenly to obtain a finished sewage treatment agent;

[0031] The diatomite modification in step 1 is as follows: calcining the diatomite at 300-500° C. for 1-3 hours, and then soaking the calcined diatomite in 40-50% ethanol for 20-40 minutes;

[0032] The heating demagnetization temperature in step 2 is: 300-500°C, and the demagnetization time is: 1-3 hours;

[0033] In the step 4, the drying temperature is 300-500° C. and the drying time is 1-3 hours.

[0034] Embodiment 4: A method for preparing a biologically active sewage treatment agent, the method for preparing a biologically active sewage treatment agent comprising the following steps:

[0035] Step 1: Diatomaceous earth modification: calcining the diatomaceous earth for 3 hours, and soaking the calcined diatomaceous earth in an ethanol solution to obtain modified diatomaceous earth;

[0036] Step 2: Demagnetization: Demagnetize the iron powder by heating it in an inert atmosphere to obtain magnetite-free powder;

[0037] Step 3: Mixing: Add non-magnetic powder, ferric chloride, quicklime, activated carbon and water to the modified diatomaceous earth in proportion, mix and stir to obtain a mixture.

[0038] Step 4: Drying: Drying the mixture to obtain a block mixture;

[0039] Step 5: Mashing: Mashing the block mixture into a powdery semi-finished product;

[0040] Step 6: Add the bacterial agent to the powder-like semi-finished product and mix them evenly to obtain a finished sewage treatment agent;

[0041] The diatomite modification in step 1 is as follows: calcining the diatomite at 400° C. for 2 hours, and then soaking the calcined diatomite in 45% ethanol for 30 minutes;

[0042] The heating demagnetization temperature in step 2 is: 400°C, and the demagnetization time is: 2 hours;

[0043] The drying temperature in step 4 is 400° C. and the drying time is 2 hours.

[0044] The biologically active sewage treatment agent of the present invention is quick and convenient to produce, has low cost, and contains biological bacteria. The type and amount of the bacteria in the treatment agent can be appropriately adjusted according to different sewage environments. The COD, BOD and SS of the sewage treated with the treatment agent are greatly reduced, and the total nitrogen, total phosphorus and ammonia nitrogen contents are also reduced accordingly, thereby reducing the burden of the sewage post-treatment process; and it can be produced in large quantities, and a large amount of sewage can be effectively treated in a short time, thereby greatly improving the sewage treatment efficiency.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A biologically active sewage treatment agent, characterized in that: The biologically active sewage treatment agent comprises the following components: 10-30 parts of diatomaceous earth, 20-40 parts of bentonite, 5-10 parts of iron powder, 5-10 parts of ferric chloride, 12-20 parts of quicklime, 5-15 parts of activated carbon and 7-11 parts of bacterial agent.

2. A biologically active sewage treatment agent according to claim 1, characterized in that: The bacterial agent comprises at least one of yeast, nitrifying bacteria and denitrifying bacteria.

3. A biologically active sewage treatment agent according to claim 2, characterized in that: The biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast and 2-6 parts of nitrifying bacteria.

4. A biologically active sewage treatment agent according to claim 2, characterized in that: The biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast and 2-6 parts of denitrifying bacteria.

5. A biologically active sewage treatment agent according to claim 2, characterized in that: The biologically active sewage treatment agent comprises the following components: 20 parts of diatomaceous earth, 30 parts of bentonite, 8 parts of iron powder, 8 parts of ferric chloride, 16 parts of quicklime, 10 parts of activated carbon, 5 parts of yeast, 3 parts of denitrifying bacteria and 3 parts of nitrifying bacteria.

6. The method for preparing a biologically active sewage treatment agent according to claim 1, characterized in that: The preparation method of the sewage treatment agent with biological activity comprises the following steps: Step 1: Diatomite modification: calcining the diatomite for 3 hours, and soaking the calcined diatomite in an ethanol solution to obtain modified diatomite; Step 2: Demagnetization: Demagnetize the iron powder by heating it in an inert atmosphere to obtain magnetite-free powder; Step 3: Mixing: Add non-magnetic powder, ferric chloride, quicklime, activated carbon and water to the modified diatomaceous earth in proportion, mix and stir to obtain a mixture. Step 4: Drying: Drying the mixture to obtain a block mixture; Step 5: Mashing: Mashing the block mixture into a powdery semi-finished product; Step 6: Add bacterial agent to the powder-like semi-finished product and mix evenly to obtain the finished sewage treatment agent.

7. The method for preparing a biologically active sewage treatment agent according to claim 1, characterized in that: The diatomite modification in step 1 is as follows: calcining the diatomite at 300-500° C. for 1-3 hours, and then soaking the calcined diatomite in 40-50% ethanol for 20-40 minutes.

8. The method for preparing a biologically active sewage treatment agent according to claim 6, characterized in that: The temperature of heating demagnetization in the step 2 is 300-500° C., and the demagnetization time is 1-3 hours.

9. The method for preparing a biologically active sewage treatment agent according to claim 6, characterized in that: In the step 4, the drying temperature is 300-500° C. and the drying time is 1-3 hours.