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Treatment method for achieving resourcezation of urine wastewater

A treatment method and a resource-recycling technology are applied in the treatment field of realizing the recycling of urine wastewater, which can solve the problems of death of aquatic animals, polluted waters, deterioration of water bodies, etc., and achieve the effects of improving soil conditions, increasing nutrient elements, and reducing prices.

Inactive Publication Date: 2019-01-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the total volume of urine only accounts for about 4% of the total amount of urban sewage, it provides nearly 80% of the nitrogen and more than 50% of the phosphorus in urban sewage. Since urban sewage will be discharged into natural water bodies after treatment, Even some sewage and wastewater will be discharged directly without treatment, so the high concentration of nitrogen and phosphorus in sewage and wastewater will have a great impact on the water body. The most direct impact is the eutrophication of the water body, leading to the deterioration of the water body and the death of aquatic animals. polluted waters

Method used

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  • Treatment method for achieving resourcezation of urine wastewater

Examples

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Embodiment 1

[0029] A treatment method for realizing the resource utilization of urine waste water, comprising the following steps:

[0030] 1) Screening corn stalks as the preparation material of biochar;

[0031] 2) Processing the screened biomass material;

[0032] a) After cleaning the corn stalks with ultrapure water, place them in an oven to dry;

[0033] b) pulverize the dried biomass material with a pulverizer, and pass through a 20-mesh screen;

[0034] c) the crushed powder is packed into a 20mL crucible;

[0035] d) Place the crucible in the muffle furnace and set the relevant parameters;

[0036] Among them, the heating rate is 5°C / min, the firing temperature is 350°C, and the constant temperature time is 1 hour;

[0037] e) Clean the fired biochar with ultrapure water until the absorbance of the cleaning solution is less than 0.005 when measured at a wavelength of 254nm;

[0038] f) placing the cleaned biochar in an oven and drying at 50°C;

[0039] 3) adding biochar and...

Embodiment 2

[0041] A treatment method for realizing the resource utilization of urine waste water, comprising the following steps:

[0042] 1) Screening corn stalks as the preparation material of biochar;

[0043] 2) Processing the screened biomass material;

[0044] a) After cleaning the corn stalks with ultrapure water, place them in an oven to dry;

[0045] b) pulverize the dried biomass material with a pulverizer, and pass through a 20-mesh screen;

[0046] c) the crushed powder is packed into a 20mL crucible;

[0047] d) Place the crucible in the muffle furnace and set the relevant parameters;

[0048] Wherein, the heating rate is 10°C / min, the firing temperature is 500°C, and the constant temperature time is 2 hours;

[0049] e) Clean the fired biochar with ultrapure water until the absorbance of the cleaning solution is less than 0.005 when measured at a wavelength of 254nm;

[0050] f) placing the cleaned biochar in an oven and drying at 80°C;

[0051] 3) adding biochar and ...

Embodiment 3

[0053] A treatment method for realizing the resource utilization of urine waste water, comprising the following steps:

[0054] 1) Screening corn stalks as the preparation material of biochar;

[0055] 2) Processing the screened biomass material;

[0056] a) After cleaning the corn stalks with ultrapure water, place them in an oven to dry;

[0057] b) pulverize the dried biomass material with a pulverizer, and pass through a 20-mesh screen;

[0058] c) the crushed powder is packed into a 20mL crucible;

[0059] d) Place the crucible in the muffle furnace and set the relevant parameters;

[0060] Wherein, the heating rate is 10°C / min, the firing temperature is 700°C, and the constant temperature time is 2 hours;

[0061] e) Clean the fired biochar with ultrapure water until the absorbance of the cleaning solution is less than 0.005 when measured at a wavelength of 254nm;

[0062] f) placing the cleaned biochar in an oven and drying at 80°C;

[0063] 3) adding biochar and ca...

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Abstract

The invention relates to a treatment method for achieving resourcezation of urine wastewater. The treatment method mainly comprises the following steps: selecting a biochar preparing material, treating the preparing material, preparing biochar and adding the biochar and calcium chloride. When the treatment method is used for treating the urine wastewater, on the one hand, the biochar itself is a good adsorbent, the biochar can effectively adsorb some pollutants contained in the wastewater after being added into the urine wastewater and the treated urine wastewater can be used as a liquid fertilizer, and on the other hand, the added calcium chloride provides usable calcium ions for the urine wastewater, the produced calcium ions can react with nitrogen and phosphorus to produce calcium phosphate (Ca3(PO4)2), the calcium chloride has lower price and more easily controlled cost than calcium peroxide and the produced calcium phosphate can be recycled, applied as a fertilizer into soil or further processed for utilization; in addition, the biochar is a material prepared from waste biomass and is recyclable and low in cost; therefore, combined use of the biochar and the calcium chloridefor treating the urine wastewater has a beneficial effect on resource recycling.

Description

technical field [0001] The invention relates to phosphorus resources and pollutants in urine waste water, in particular to a treatment method for realizing the resource utilization of urine waste water. Background technique [0002] In contemporary society, with the continuous progress of the economy, the continuous progress of industrial and agricultural production, various environmental problems arise spontaneously, especially with the continuous growth of the population, the demand for food is increasing, and the greater demand for food Promote the gradual increase in the use of chemical fertilizers in agricultural production. Phosphorus fertilizers mainly come from the mining and smelting of phosphorus minerals. Most of the used phosphorus resources will go through the element cycle and finally be stored in the seabed in the form of sediments. Phosphorus resources become a non-renewable resource. At this stage, the demand for phosphorus is expected to further increase, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/58B01J20/20B01J20/30C05B7/00C01B25/32
CPCB01J20/20B01J20/3078B01J2220/4825B01J2220/4881C01B25/32C02F1/283C02F1/58C02F2101/105C05B7/00
Inventor 李志鹏孙佩哲张若纯
Owner TIANJIN UNIV
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