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Reactor, system and method for urine in-situ resource recovery

A resource recovery and reactor technology, applied in chemical instruments and methods, applications, climate change adaptation, etc., can solve problems such as decreased transparency, blockage of water treatment facilities, carcinogenicity, etc., to avoid loss, efficient recovery, and simple structure. Effect

Active Publication Date: 2021-06-25
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Eutrophication of the water body occurs, the transparency of the water decreases, and aquatic organisms such as fish and shrimp die in large numbers, which greatly destroys the ecological balance of the water environment and accelerates the process of swamping and terrestrialization of the water body; Nitrosamines are carcinogenic and seriously threaten human health; the sources of urban water supply are rivers and lakes, and the algae and microorganisms carried in the water can easily cause water treatment problems. Obstruction of facilities, thereby interfering with the healthy operation of the waterworks

Method used

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  • Reactor, system and method for urine in-situ resource recovery
  • Reactor, system and method for urine in-situ resource recovery
  • Reactor, system and method for urine in-situ resource recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Exploratory experiment on the filling amount of biochar and magnesia-loaded biochar

[0040] In this example, the nitrogen, phosphorus, and potassium resources of urine recovery are filled with biochar and magnesia-loaded biochar, and the filling amount of biochar and magnesia-loaded biochar is determined according to the properties of urine, biochar properties, and the replacement cycle of the reactor. First, set the reactor replacement cycle to 10 days, the number of urinations per day is 0.2 person-times / day, the ammonia nitrogen adsorption capacity of biochar is 10mg / g, and the magnesium content of magnesia-loaded biochar is 15%. According to the filling amount of biochar and magnesia load The formula for calculating the filling amount of biochar is as follows;

[0041]

[0042] The filling amount of biochar obtained is 0.56kg, and the filling amount of magnesia loaded biochar is 0.09kg.

[0043] The resource recovery results are as follows: the recov...

Embodiment 2

[0044] Example 2: Biochar and magnesium oxide-loaded biochar filling experiment

[0045] The operation steps of filling the filler of nitrogen, phosphorus and potassium resources recovered in urine in this embodiment are the same as in embodiment 1, and the difference from embodiment 1 is that the biochar adsorption capacity of ammonia nitrogen set in this embodiment is 4 mg / g, and the biochar is obtained The filling quantity is 1.40kg. The resource recovery results are as follows: the recovery rate of ammonia nitrogen is 99%, the recovery rate of phosphorus is 93%, and the recovery rate of potassium is 24%. The comparison of Examples 1 and 2 shows that when the adsorption capacity of biochar to ammonia nitrogen is higher, the filling amount of biochar can be reduced, thereby reducing the cost of technology application, and the recovery rate of potassium resources is higher, and the resource recovery effect is better.

Embodiment 3

[0046] Example 3: Exploratory experiment on the filling amount of biochar and magnesium oxide-loaded biochar

[0047] The operation steps of filling the filler of nitrogen, phosphorus and potassium resources of urine recovered in this embodiment are the same as in embodiment 1, and the difference from embodiment 1 is that the magnesium content of the magnesium oxide-loaded biochar set in this embodiment is 5%, and the magnesium oxide load is 5%. The filling amount of biochar is 0.27kg. The resource recovery results are as follows: the recovery rate of ammonia nitrogen is 99%, the recovery rate of phosphorus is 92%, and the recovery rate of potassium is 26%. The comparison of Examples 1 and 3 shows that when the magnesium content of the magnesia-supported biochar is high and the magnesium element content in the magnesia-supported biochar is high, the filling amount of the magnesia-supported biochar can be reduced, which is beneficial to reduce the cost of technology application...

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Abstract

The invention discloses a reactor, a system and a method for urine in-situ resource recovery, and belongs to the technical field of urine recovery. The reactor comprises a reactor body, the upper and lower ends of the reactor body are respectively a water inlet end or a water outlet end, the water inlet end is connected with urine, and the water outlet end is used for discharging residual urine after nitrogen, phosphorus and potassium are recovered. The reactor body is filled with a filler for adsorbing nitrogen, phosphorus and potassium resources, and the filler and the reactor body are detachable. A tubular pressing plate is arranged between the reactor body and the water inlet end and the water outlet end, the reactor body is connected with the tubular pressing plate through a flange, and a filter plate is arranged between the reactor body and the tubular pressing plate. The system comprises a urine collecting sanitary appliance, a filtering device and a reactor which are sequentially connected through a pipeline, and water passing or emptying of the reactor is achieved by controlling opening and closing of a valve so that nitrogen and phosphorus can be recycled through filler or the filler can be recycled. The reactor is simple in structure, unpowered and detachable, most of nitrogen and phosphorus and part of potassium in urine are efficiently recycled from the source, effective utilization of resources is achieved, and the urban sewage treatment load is relieved.

Description

technical field [0001] The invention belongs to the technical field of urine recovery, and relates to a reactor, system and method for in-situ resource recovery of urine. Background technique [0002] 80% of N, 50% of P and 55% of K in municipal sewage come from urine. The mixed collection of sewage and urine significantly increases the treatment load of sewage treatment plants. So far, the removal of nitrogen and phosphorus from wastewater has been costly but still creates an unbalanced water-energy-nutrient relationship. The content of N, P, K and other elements in urine is high. Urine can be regarded as a concentrated solution of nitrogen, phosphorus and potassium. If it is not treated effectively, it will be the main source of pollution causing eutrophication of water bodies. Eutrophication occurs in the water body, the transparency of the water decreases, and a large number of aquatic organisms such as fish and shrimp die, which greatly destroys the ecological balance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01D15/08C05G1/00C05F3/04C05F3/06
CPCC02F1/283B01D15/08C05F3/04C05F3/06C05D9/00C02F2103/005Y02A40/20
Inventor 徐康宁王林林刘静岩
Owner BEIJING FORESTRY UNIVERSITY
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