Resource treatment system for urine and feces separation and recovery in urine diversion dehydration toilets

Patent metadata

Field	Value
Publication number	US-11795089-B2
Application number	US-202017084647-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	Nov 1, 2019
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A resource treatment system for urine and feces separation and recovery in urine diversion dehydration toilets, includes a urine-faeces division toilet, a urine and gray water treatment system, and a fermentation and biodegradation fecal system. The urine-faeces division toilet is configured to separate and recover urine and feces discharged by users. The urine and gray water treatment system includes an adjusting pool, a microalgae culture device and a metal-based electrogenerated dynamic membrane. The adjusting pool is configured to receive the urine in the urine-faeces division toilet and domestic sewage, and adjust a urine-to-domestic sewage ratio. The metal-based electrogenerated dynamic membrane includes a metal microfiltration membrane, a stainless-steel mesh and a power supply. The fermentation and biodegradation fecal system includes a collection and adjusting device, a fermentation bed and a biodegradation chamber.

First claim

What is claimed is:

1. A resource treatment system for urine and feces separation and recovery in urine diversion dehydration toilets, comprising
a urine-faeces division toilet,
a urine and gray water treatment system,
a fermentation and biodegradation fecal system;
wherein
the urine-faeces division toilet is configured to separate and recover urine and feces discharged by users;
the fermentation and biodegradation fecal system is configured to receive the feces separated from the urine-faeces division toilet;
the urine and gray water treatment system comprises an adjusting pool, a microalgae culture device and a metal-based electrogenerated dynamic membrane; wherein
the adjusting pool is configured to receive the urine in the urine-faeces division toilet and domestic sewage, and adjust a urine-to-domestic sewage ratio; the adjusting pool is connected to the microalgae culture device through a first pipe;
the microalgae culture device comprises an outlet pipe, and the microalgae culture device is configured to absorb carbon, nitrogen and phosphorus elements; the outlet pipe of the microalgae culture device is connected to the metal-based electrogenerated dynamic membrane; and
the metal-based electrogenerated dynamic membrane comprises a metal microfiltration membrane, a stainless-steel mesh and a power supply; an anode of the power supply is connected to the metal microfiltration membrane, and a cathode of the power supply is connected to the stainless-steel mesh; the metal microfiltration membrane is configured to collect microalgae,
wherein a pore size of the metal microfiltration membrane is 5 μm or 10 μm, and a membrane surface of the metal microfiltration membrane is modified by polydopamine in-situ self-polymerization;
wherein the urine-faeces division toilet includes a rear urinal, wherein the rear urinal is divided into a rear urine urinal and a feces pool by a partition arranged in the rear urinal; a first urine collection port is arranged at a bottom of the rear urine urinal, and the first urine collection port is connected to a urine storage bucket by a second pipe; a feces bin is arranged under the feces pool; the feces pool is a hollow structure; and
a cover plate is located above the feces pool, and a feces plate is located under the feces pool; the cover plate and the feces plate are configured to rotate around a first rotating shaft, and the cover plate and the feces plate are linked with each other; wherein
when the cover plate is opened, the feces plate located under the feces pool is configured to separate the feces pool from the feces bin;
when the feces plate is opened, the cover plate located above the feces pool is configured to cover an opening of the feces pool.

2. The resource treatment system according to claim 1 , wherein the microalgae culture device comprises a culture column, a microalgae liquid, an illumination device and an aeration device; a water inlet and a water outlet are arranged on the culture column, and the microalgae liquid is arranged in the culture column; the aeration device is configured to aerate the microalgae liquid, and the illumination device is arranged above the culture column to provide light.

3. The resource treatment system according to claim 1 , wherein the feces plate is a bending structure, and the feces plate comprises a sloping plate; wherein
when the cover plate is opened, the sloping plate is located under the feces pool to receive the feces;
when the cover plate is closed, the sloping plate is turned over, and a surface for receiving the feces faces towards the feces pool;
the feces plate and the cover plate are directly fixedly connected to rotate around the first rotating shaft; and
a raised pedal is arranged on the cover plate for opening the cover plate.

4. The resource treatment system according to claim 3 , wherein the urine-faeces division toilet further comprises a receiving cavity for receiving plant ash, and a plant ash channel is obliquely arranged under a bottom plate of the rear urine urinal; a first end of the plant ash channel leads to the receiving cavity, and a second end of the plant ash channel is movably in contact with the sloping plate of the feces plate; a blanking baffle for opening or closing the plant ash channel is arranged the second end of the plant ash channel.

5. The resource treatment system according to claim 4 , wherein a pedal is arranged at a side of the rear urinal, and the pedal is connected to a vertical valve rod; the blanking baffle rotates around a second rotating shaft; a transmission plate is arranged at an end of the blanking baffle, and the vertical valve rod abuts against the transmission plate; the vertical valve rod moves downward to drive the transmission plate to rotate, and the transmission plate enables the blanking baffle to flip up to open the plant ash channel; when the vertical valve rod is not affected by an external force, the blanking baffle is adhered to a port of the plant ash channel under an action of gravity to close the plant ash channel.

6. The resource treatment system according to claim 5 , wherein the urine-faeces division toilet further comprises a front urine urinal and a partition wall; the front urine urinal and the rear urinal are separated by the partition wall; a second urine collection port is arranged at a bottom of the front urine urinal, and the second urine collection port is connected to the urine storage bucket by a third pipe.

7. The resource treatment system according to claim 6 , wherein the receiving cavity is arranged in the partition wall, and the rear urine urinal is located between the front urine urinal and the feces pool.

8. A resource treatment system for urine and feces separation and recovery in urine diversion dehydration toilets, comprising
a urine-faeces division toilet,
a urine and gray water treatment system,
a fermentation and biodegradation fecal system;
wherein
the urine-faeces division toilet is configured to separate and recover urine and feces discharged by users;
the urine and gray water treatment system comprises an adjusting pool, a microalgae culture device and a metal-based electrogenerated dynamic membrane; wherein
the adjusting pool is configured to receive the urine in the urine-faeces division toilet and domestic sewage, and adjust a urine-to-domestic sewage ratio; the adjusting pool is connected to the microalgae culture device through a first pipe;
the microalgae culture device comprises an outlet pipe, and the microalgae culture device is configured to absorb carbon, nitrogen and phosphorus elements; the outlet pipe of the microalgae culture device is connected to the metal-based electrogenerated dynamic membrane; and
the metal-based electrogenerated dynamic membrane comprises a metal microfiltration membrane, a stainless-steel mesh and a power supply; an anode of the power supply is connected to the metal microfiltration membrane, and a cathode of the power supply is connected to the stainless-steel mesh; the metal microfiltration membrane is configured to collect microalgae,
wherein, the fermentation and biodegradation fecal system comprises a collection and adjusting device, a fermentation bed and a biodegradation chamber; wherein
the collection and adjusting device is configured to receive the feces separated from the urine-faeces division toilet, kitchen waste and livestock and poultry feces, and adjust proportions of the feces, the kitchen waste and the livestock and the poultry feces to form a mixture;
the collection and adjusting device is connected to the fermentation bed; and
the fermentation bed ferments the mixture and feeds fermented residue into the biodegradation chamber.

Assignees

• Univ Tongji

Inventors

• Zhou Xuefei
• Zhang Yalei
• Yin Wenjun
• Yu Zhenjiang
• Chen Jiabin
• Zhang Wei
• Xu Yue

Classifications

• C02F11/02 Primary

  Biological treatment · CPC title

• C12M21/00

  Bioreactors or fermenters specially adapted for specific uses (digesters for manure A01C3/023; apparatus for PCR B01L7/52; destroying or transforming solid waste B09B3/00; methods for genetic engineering C12N15/00, C12Q1/68; nucleic acid amplification reactions C12Q1/6844) · CPC title

• C12M23/02

  Form or structure of the vessel (large containers B65D88/00) · CPC title

• C12M33/14

  with filters, sieves or membranes · CPC title

• C12M37/02

  Filters · CPC title