KR20000054588A - Device for treatment of night soil, food waste and house sewage and a method of treating night soil, food waste and house sewage using the device - Google Patents

Abstract

PURPOSE: A disposal apparatus of excretions, kitchen sewage, and domestic wastewater is provided, which is characterized in that the disposal apparatus is applicable to disposal of excretions, kitchen sewage, and domestic wastewater. And disposal efficiency is high compared with a conventional disposal apparatus, therefore final treated water is reusable. CONSTITUTION: Excretions, kitchen sewage, or domestic wastewater flow into a primary fermentation tank(2) to be fermented under anaerobic or partially aerobic condition. Drained wastewater from the primary fermentation tank(2) flows into a second fermentation tank(4) which has hundreds of thousands of holes(17), and is fermented under aerobic condition. Remained contaminant is adsorbed in an adsorption tank(5). Wood chips of 4-20 diameter are packed in the primary fermentation tank(2) and the second fermentation tank(4) in ratio of 1-20% and 80-100% of fermentation tank volume respectively. Then, final treated water is reusable as grey water.

Description

DEVICE FOR TREATMENT OF NIGHT SOIL, FOOD WASTE AND HOUSE SEWAGE AND A METHOD OF TREATING NIGHT SOIL, FOOD WASTE AND HOUSE SEWAGE USING THE DEVICE }

The present invention relates to a manure, food waste and domestic sewage treatment apparatus, and more specifically, to the food waste and living sewage pulverized by the crusher attached to the bottom of the manure, sink base under anaerobic and some aerobic conditions under primary fermentation tank and aerobic conditions Complete decomposition through the secondary fermentation tank, adsorbing the residual components in the adsorption tank to completely remove the manure, food waste and household sewage so that no solid components remain, the water obtained is stored in the storage tank, and operated by the user. The present invention relates to a manure, food waste and domestic sewage treatment apparatus in which water stored in a storage tank is recycled as toilet water or domestic water, and a method for treating manure, food waste and domestic sewage using the same.

Conventional household septic tank is composed of sedimentation separation chamber and filtration chamber or sedimentation separation chamber, filtration chamber and oxidizing tank, and most of the collected manure is simply stayed for a certain time to separate solid-liquid, and then solid components are collected once a year. The liquid component is discarded and the system removes the organics in the anaerobic state and then discharges the treated water.

These conventional septic tanks have low treatment efficiency and cause environmental pollution when water from septic tanks flows into sewage, etc., costs for reprocessing sewage, and the collected solid components have to be disposed of separately. There were problems such as cost incurred.

On the other hand, outdoor toilets such as temples, parks, campsites, river sites, etc. are mostly non-flushing, so there is a hygiene problem, and when the flushing is made, it is difficult to secure washing water and continuously supply the washing water.

In addition, the conventional food waste treatment methods were drying and incineration.

The drying method has a problem of collecting and collecting food waste separately, and the incineration method requires a pretreatment process for removing some moisture, and there is a problem that secondary air pollution occurs during incineration.

Japanese Laid-Open Patent Publication No. Hei 10-72858 discloses a circulating manure treatment device that does not require water supply, and feces excreted from the toilet are fermented while suspended in a fermenter, and urine from the toilet and urinal is separately Disclosed is an apparatus for storing urine purified in a septic tank and then purifying the purified urine in a stock tank as washing water and supplying it to the toilet and urinal as washing water. However, the circulatory manure treatment device collects feces and urine separately, purifies only the urine, and recycles the washing water, and the feces have a troublesome treatment in a solid state after the first fermentation.

The present invention is to solve the above problems, and can be used not only for household septic tanks, but also for outdoor toilets, it is not necessary to completely dissolve manure and reprocess the solid components, and to recycle the purified liquid components as washing water as well as food and beverages. To provide a device and method for manure, food waste and domestic sewage treatment, which simultaneously treat and recycle waste and domestic sewage.

1 is a longitudinal sectional view of the manure, food waste and domestic sewage treatment apparatus according to the present invention.

2 is a perspective view of a secondary fermenter according to the present invention.

* Description of the main parts of the drawing

1: toilet seat

1 ': Thinkstand

2 ': grinder

1 '': Life sewer pipe

2: primary fermenter

3: primary fermentation broth dispersion pipe

4: secondary fermenter

5: adsorption tank

6: storage tank

7: secondary reservoir

8, 9, 10: motor

11, 12, 13, 14, 15, 16: Pipe

17: vent hole

The first aspect of the present invention is to collect the manure transported from the toilet 1, the food waste crushed by the crusher 2 ′ attached to the bottom of the sink 1 ′ and the living sewage transported from the living sewers 1 ″. The primary fermentation tank (2), which is aerated in the presence of aquatic microorganisms and fermented under anaerobic and some aerobic conditions, has hundreds of thousands of fine vent holes (17) on its side and the upper fermentation broth transferred from the primary fermentation tank in contact with air. Fermentation tank (4) for fermenting under aerobic conditions, adsorption tank (5) for adsorbing residual components in the secondary fermentation broth transferred from the secondary fermentation tank, and storage tank (6) for storing water transferred from the adsorption tank (5). ), Manure, food waste and household sewage treatment apparatus including pipes (15, 16) connecting the storage tank (6) to the toilet (1) and a faucet for household water.

The grinder 2 'is attached to the bottom of the sink 1' and serves to finely crush the food waste collected in the sink. The finely ground food waste is transferred to the primary fermentation tank 2 by hydraulic pressure through the pipe 11 together with the manure and domestic sewage. Therefore, by using the apparatus according to the present proposal, it is possible to treat manure and various organic waste from food waste and domestic sewage pipes. Living sewer pipes (1 '') means any sewer pipe used in the home, such as bathroom sewer pipe, laundry room sewer pipe.

The primary fermentation tank 2 is a place where the manure, food waste and household sewage transferred from the toilet 1, the sink 1 'and the living sewage pipes 1' 'are aerated by the aeration device for primary fermentation. The motor 8 is usually used for aeration. Manure itself and natural microorganisms are used as microorganisms that decompose organic matter in the manure. Habitats for anaerobic and aerobic microorganisms are supplied from the outside, and cellulosic materials capable of forming porous membranes such as sawdust, rice hulls and wood chips are used. The microbial habitat is preferably 4-20 mm diameter wood chips fully dehydrated, more preferably cedar or oak chips dehydrated by heating at 80-100 ° C. for 35-40 hours in a ceramic furnace. These wood chips are both a source of microorganisms and a myriad of pores inside the chip, which allows anaerobic microorganisms to grow in the deeper parts of the chip, and provides abundant microbial habitats for aerobic microorganisms to grow near the surface of the chip. Do it. Wood chips added to the primary fermenter fill about 1-20% of the volume of the primary fermenter. In order to promote fermentation by microorganisms, it is important to properly maintain the air injection conditions. The air injection is preferably carried out continuously and the air injection rate is preferably 0.3-3.0% of the volume of the primary fermenter per minute.

The secondary fermentation tank 4 is a place where the primary fermentation broth transferred by the motor 10 from the primary fermentation tank through the pipe 12 is fermented under aerobic conditions. The secondary fermenter 4 has a special structure that can be in contact with the outside air to create aerobic conditions, i.e. the top is open for contact with the outside air, with hundreds of thousands of fine vent holes 17 on the side. Present and sufficient air is supplied into the secondary fermenter 2. In the primary fermentation tank (2), anaerobic microorganisms dominate the aerobic microorganisms in an enclosed environment, while in the secondary fermentation tank (2), the aerobic microorganisms dominate the anaerobic microorganisms by providing an environment in which the air can be sufficiently contacted. Thus, the manure is sufficiently fermented by both anaerobic and aerobic microorganisms while the manure passes through the primary fermentation tank 2 and the secondary fermentation tank 4, thereby enabling complete decomposition of the solid organic matter. As in the primary fermenter, preferably 4 to 20 mm diameter wood chips completely dehydrated as microbial source and microbial habitat, and the wood chips are charged to the secondary fermenter 4 by 80-100% of the volume of the fermenter. . In the secondary fermentation tank 4, the fermentation broth supplied from the primary fermentation tank is dispersed by the primary fermentation broth dispersion pipe 3 without passing through the primary fermentation broth and passed between the wood chips by free fall due to gravity. Decompose the solid completely.

Wood chips, which serve as microbial sources and habitats, are almost semi-permanent, but when used in outdoor toilets, the amount of manure is reduced in winter, and wood chips can decompose themselves due to lack of organic matter. Replenish your wood chips.

The water produced in the secondary fermentation tank 4 is transferred to the adsorption tank 5 through the pipe 13. The adsorption tank 5 is filled with an adsorbent to adsorb organic and inorganic components remaining in the water produced after the secondary fermentation. Activated carbon is mainly used as the adsorbent. By passing through the adsorption tank, bad odors, colors, etc. in the washing water are completely removed and can be reused as the washing water.

The completely purified water via the adsorption tank 5 is stored in the storage tank 6 by the pump 8 via the pipe 14. The storage tank 6 is connected to the toilet bowl 1 and the faucet for living water through the pipes 15 and 16, so that the water stored in the storage tank at the time of the user's operation is recycled as the toilet washing water or the living water.

Living water means water for gardening, washing, washing machines, etc. in addition to drinking water. If recycling as household water is not feasible, excess water other than the water recycled as toilet flushing water may be discharged to sewage pipes.

The second aspect of the present invention is the sewage conveyed from the toilet 1, the food waste crushed by the crusher 2 'attached to the bottom of the sink 1' and the living sewage conveyed from the living sewers 1 ''. Primary fermentation under anaerobic conditions in the primary fermenter (2) while continuously injecting air at a rate of 0.3-3.0% of the volume of the primary fermentation tank per minute; The primary fermentation broth transferred from the primary fermentation tank (2) is dispersed in the secondary fermentation tank (4) by the dispersion pipe (3) and passed between the wood chips by free fall by gravity, and completely removes organic matter and solids in the object to be treated. Secondary fermentation; Passing water generated after the second fermentation through the adsorption tank 5 to adsorb the residual material; Storing the obtained water in the storage tank 6; And the manure, food waste and household sewage treatment method comprising the step of recycling the water stored in the storage tank to the toilet water and the domestic water during the operation of the user.

Materials externally provided as a microbial habitat in the primary fermentation tank (2), the secondary fermentation tank (4) and the primary fermentation tank (2) and the secondary fermentation tank (4) used in the method of treating manure according to the present invention are described above. As described for, the detailed description thereof is omitted.

Household manure and domestic sewage treatment apparatus according to the present invention was manufactured in actual size, installed in home, and operated for 6 months, and the suspended substances, BOD and COD were measured every 7 days. The average value was as follows.

Raw water Treated water Processing efficiency (%) Suspension (mg / ℓ) 1775 3 99.8 COD _Mn (mgO / ℓ) 507 13 97.4 BOD ₅ (mgO / ℓ) 618 6 99.0

As a result of the experiment, when manure, food waste and household sewage treatment device according to the present invention is treated with manure, food waste and household sewage, various substances in raw water are almost completely decomposed and used again as washing water for toilet and living water. It can be seen that there is no inferiority.

As described above, the manure, food waste and sewage treatment apparatus according to the present invention has the following advantages.

First, there are no solid components to be reprocessed because the solid and liquid components in the manure, food waste and domestic sewage are all completely decomposed into liquids and gases and are recycled as washing water, thus being very hygienic and pollution free.

Second, installation is easy and can be installed in a short time.

Third, since it is recycled and used as the washing water without continuously supplying the washing water for flushing the toilet, there is no need to replenish water, thus reducing the maintenance cost.

Fourth, the device according to the present invention can be used as a flush toilet in a region where it is difficult to supply and drain the washing water, such as mountainous land, as well as a general home.

Fifth, the device can be used semi-permanently except for supplying 5-10% of the wood chips, which are microbial habitats in the fermenter, once a year.

Sixth, the living sewage from food waste and living sewage pipes as well as manure can be treated at the same time using the device according to the present invention.

Claims (5)

The manure transferred from the toilet 1, the food waste crushed by the grinder 2 'attached to the sink 1' and the living sewage transferred from the living sewers 1 '' are detonated in the presence of aquatic microorganisms. Primary fermentation tank (2) fermented under anaerobic and some aerobic conditions, hundreds of thousands of micro vent holes (17) are present on the side, and the upper part is in contact with air to ferment the primary fermentation broth transferred from the primary fermentation tank under aerobic conditions Secondary fermentation tank (4), adsorption tank (5) for adsorbing residual components in the secondary fermentation broth transferred from the secondary fermentation tank, storage tank (6) for storing water transferred from the adsorption tank (5), storage tank (6) ), Manure, food waste and household sewage treatment apparatus comprising a pipe (15, 16) connecting the toilet (1) and a faucet for household water. 2. The apparatus of claim 1 wherein the primary and secondary fermentors contain completely dehydrated wood chips of diameter 4-20 mm by 1-20% of the volume of the fermentor. The device of claim 2, wherein the wood chips are cedar or oak chips. 4. The device of claim 3, wherein the wood chips are chips that have been completely dehydrated by heating wood in a ceramic furnace at 80-100 ° C. for 35-40 hours. The primary fermenter volume per minute was collected from the manure transferred from the toilet 1, the food waste crushed by the grinder 2 'attached to the bottom of the sink 1', and the living sewage transferred from the living sewers 1 ''. Primary fermentation under anaerobic conditions in the primary fermenter (2) while continuously injecting air at a rate of 0.3-3.0% of the; The primary fermentation broth transferred from the primary fermentation tank (2) is dispersed in the secondary fermentation tank (4) by the dispersion pipe (3) and passed between the wood chips by free fall by gravity, and completely removes organic matter and solids in the object to be treated. Secondary fermentation; Passing water generated after the second fermentation through the adsorption tank 5 to adsorb the residual material; Storing the obtained water in the storage tank 6; And recycling the water stored in the storage tank to the toilet water and the household water during the operation of the user.