JPS63294425A - System to use part of water reclamation system as energy bus - Google Patents

Abstract

PURPOSE:To use thermal energy efficiently by a system constituted with a water reclamation and use system which supplies water which has been treated in a drain water treatment facilities to every building and an energy bus which provides the circulation and installation of the city streets water channels to be used for heat exchanging with heat pumps and refrigerators in an area. CONSTITUTION:A water reclamation and use system collects drain water produced from the lives in high buildings 12 for living and drain water from information buildings 11 to a drain water treatment facilities 15, and the water produced by drain water treatment is used for an energy bus 1 and flushing toilets and raw dusts crushing machines. On the other hand heat is taken by a heat pump 4 for water heat source from an open water channel 3 used for the energy bath 1 in order to conduct room heating and hot water supply. Accordingly the heat in the energy bus 1 is taken away, but an open water channel 3 passing near the heat pump 6 of water heat source which is in operation in a building for room cooling absorbs the heat radiated from the heat pump 6, and the water which flows through a closed water channel 5, and if the water passes on its way the neighborhood of a refrigerator 8, it absorbs the thermal energy radiated form the refrigerator 8 and goes through the pipe channel section 7 of a pipe channel buried in the earth and again flows in the open water channel 3.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides wastewater treatment water for reusing wastewater from various facilities;
This wastewater treatment water is used as heat exchange water and is circulated through irrigation canals within the city to balance the thermal energy between cold and hot sources within a certain area, resulting in an energy-saving effect. This relates to a system that uses part of the system as an energy bus.

(Prior art) This type of system has not existed before. District heating and cooling systems simply supply heat from an external heat source to a destination.

In addition, a cold/hot water generator is used within a single building to store cold/hot water within the building, and the cold/hot water is circulated appropriately to exchange heat with required equipment along the circulation path. Ta.

(Problem to be solved by the invention) When cooling and heating are required at the same time, there is often a shortage or surplus of one or the other inside the building. Some efforts are made to save energy by recovering the surplus heat inside the building. In a region, there are buildings that require heat and other buildings that require cooling at the same time, so there is room for energy conservation within the region by mutually sharing heat.

The present invention was made in consideration of the above article/in,
The purpose is to recover and supply energy at the local level, and to provide a water reuse system using energy buses that can increase the efficiency of energy consumption within the area and reduce the need for energy supplies from outside the area.

(Means for Solving the Problems) In order to achieve the above object, the water recycling system using the energy bus of the present invention is intended for use in office buildings, apartment complexes, stores, factories, hotels, station buildings, etc. in urban areas. A collective wastewater treatment facility that collects wastewater from buildings and structures including various TJs and converts it into fresh water, and water recycling that supplies treated wastewater to each building after the treatment at the wastewater treatment facility has been completed. system, and the treated wastewater is transferred to a local pump,
It consists of an energy bus that is constructed by circulating irrigation canals within the city area, where the water is used for heat exchange with refrigerators, etc.

(Function) Heat exchange water that absorbs and discharges thermal energy is passed through irrigation canals that circulate within urban areas within a certain geographical area. This water absorbs excess heat from some buildings and structures and becomes a heat carrier for transporting and discharging heat to other buildings and structures. The water used will be treated wastewater.

The surplus energy of a certain building is transported within the city by the above-mentioned water &@ (referred to as an energy bus) and is supplied to other buildings that are short of energy.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

The energy bus 1 is a waterway for absorbing and transporting thermal energy with water, and the energy bus 1 for supplying heat to space heaters and water heaters is shown in FIG. 1, and its structural cross section is shown in FIG. 2. Shown below.

That is, the energy bus 1 is used to collect and exhaust thermal energy for each building, and for example, it is supplied as cooling water to a building with a cooling load, and as heat source water to a building with a heating load.

The energy bus 1 has an open channel 3, a closed channel 5, and a pipe section 7 for heat radiation and heat retention on the water surface according to the function of heat collection and heat exhaustion of the building.

Heat is collected from the open channel 3 by a water heat source heat pump 4, and the heat pump 4 performs heating and hot water supply.

Therefore, the heat in the energy bus 1 is taken away, but the open water channel 3a that passes near the water source heat pump 6 that is in cooling operation in another building absorbs the heat radiated from the heat pump 6, and prevents the absorbed heat from escaping. The water that has absorbed heat passes through the closed channel 5, and if it passes near the refrigerator 8 on the way, it absorbs the thermal energy radiated by the refrigerator 8, and the water is buried in underground pipes that are difficult for heat to escape. It is connected through a certain pipe section 7 to an open channel 3 near a water source heat pump 4 that is in heating operation.

The open channel 3 has a rectangular cross section as shown in Figure 2 (a),
The closed waterway 5 is sealed by enclosing the upper part of the groove with a rectangular cross section as shown in the figure (0), and the pipe section 7 is connected to the underground 1 as shown in the figure (c).
．． A pipe with a diameter of 1 to 2 m is buried at a depth of 5 m or less. Each of these open channels 3° and closed channels 5. As shown in FIG. 3, the pipe section 7 is connected to a group of information buildings 11. High-rise residential building 12° water silk cultivation facility 3. It circulates through the seawater desalination plant 14, etc., some of which form oval ponds, and the open channels 3, 3a, which vary in width from 2 to 10 meters depending on the location, develop a hydrophilic space. A wastewater treatment facility 5 is provided within this urban area 10. A portion of the treated waste water is added to the energy bath 1 as needed to maintain a constant amount of circulating water in the energy bath 1. The amount of replenishment water is the amount of replenishment equivalent to the amount of evaporation from the water surface of Energy Bus 1, the amount of water replacement in each building to maintain water quality that does not interfere with equipment such as heat pumps and the purpose of the hydrophilic space, and the amount of water replaced in each building. Determined by consumption.

The wastewater treatment facility 5 is provided for the purpose of reusing treated water for toilet flushing water, but its purpose has also been extended to the heat exchange water of the energy bath 1, and biological treatment equipment (activated sludge method, biological catalytic oxidation anaerobic fixed bed method, etc.), separation membrane equipment such as rapid filtration, activated carbon adsorption equipment, or ultrafiltration equipment, and disinfection equipment for chlorine agent injection.

This wastewater treatment facility 5 is the core of the water recycling cycle that is reused in the energy bus 1, and the recycled water is used to crush kitchen sink garbage 11116 as shown in Figure 4.
It is also used as water for injection.

The outline of the water recycling cycle is shown in Figure 5, as shown in Figure 5, domestic wastewater from the laundry, bath, kitchen, and hand washing in High School 1-Residence 12, as well as flush toilets and kitchen sinks including the information building 11. The wastewater is collected in the wastewater treatment facility 5, and the treated wastewater is used in the energy bath 1, toilet flush water,
It is used for water for the garbage crusher.

Among the above-mentioned drainage, drainage from high places where there is little risk of damaging the blades of the water wheel or accumulating deposits, such as washing water or surplus water from air conditioners, is carried out using the speed head. As shown in Figure (a), the water is used to drive the power generation water turbine 18 whose rotating shaft is connected to the rotor of the generator 17, and the velocity head of the waste water from the upper floors of the building is converted into electrical energy and recovered by the water turbine power generation. are doing.

Figure (b) shows an outline of a water pumping device that uses the potential energy of wastewater from high places to pump up clean water, reducing the burden on water pumps and, as a result, reducing power consumption. The device 19 is equipped with a gate valve 20 that can be moved left and right inside the cylindrical body, and drain pipes 21-
21- are connected to each other through valves, and water supply pipes 22-22- are connected to the upper and lower right sides through automatic valves.
) is provided with a check valve 23 that opens only in the water supply direction.

Clean water is stored in the gate valve 20 side of one water pumping device using the water supply pressure, and the valves installed in each drain pipe 21 and water supply pipe 22 of the water pumping device 19 are automatically controlled to reduce the potential energy of waste water. Push the gate valve 20 back to the right with
The clean water in 9 is sent to the intermediate tank for clean water installed higher up.

In this way, wastewater is reused and pumped-up energy is recovered by utilizing the head energy associated with drainage from high-rise buildings, and the energy demand within a certain area is balanced so that there is no waste in energy consumption. .

(Effects of the invention) As described in detail above, the water reuse system using the energy bus of the present invention is equipped with an energy bus using an irrigation canal that circles the WJ in the city area, so it is possible to Excess heat energy generated due to the characteristics of the facility is absorbed by the energy bus, and conversely, buildings that lack the same kind of energy collect heat from the energy bus, thereby balancing the overall heat demand within a certain area. can be achieved. This will enable efficient use of thermal energy throughout the region.

In addition, the water used for the energy bus is treated wastewater that is obtained by treating gray water discharged from a certain urban area at a wastewater treatment facility, so there is no need to install any heat exchange channels or pipes, and the treated water can be By sharing the water, the water supply is not consumed, and the installation of waterways or pipes is reduced, so the thermal energy utilization effect obtained by installing the energy bus is not diminished. The interaction between the wastewater treatment facility and the energy bus increases the drainage capacity of the sewer system, and also creates a water-friendly space by turning the open channel of the energy bus into a pond or using the pumped water for watering plants, etc. This has the effect of effectively utilizing water resources and thermal energy.

[Brief explanation of the drawing]

Figure 1 (A) is a perspective view showing the outline of the energy bus, Figure (B) is an explanatory diagram of the energy bus, Figure 2 is a vertical cross-sectional view showing each cross-sectional shape of the energy bus, and Figure 3 is an urban area. 4 is a perspective view illustrating the use of reclaimed water, FIG. 5 is a system diagram illustrating a water recycling cycle, and FIG.
) An explanatory diagram of a water turbine power generation, and (b) is an explanatory diagram of a water pumping device. 1...Energy bus 3...Open channel 4...
Water heat source heat pump 5...Closed channel 6...Water heat source heat pump 7...Pipe section 8...Refrigerating machine
9... Young 10... Urban area 11...
・Information building 12... High-rise residential building 13...
Hydroponic cultivation facility location 4...Seawater desalination plant 15...
Wastewater treatment facility 6...garbage crusher 17...
Generator 18...One water turbine for power generation...Storage pumping device 20...Gate valve 21...Water pipe 22
... Water supply pipe 23 ... Check valve ゛ Patent applicant Obayashi Co., Ltd. Manager
Patent Attorney - Iro Ken Axial Patent Attorney Masatoshi Matsumoto Figure 1 (Ino Figure 2 (Ino 1 mouth)
(tX) Volume water n partial section N
Closed book nrJ division W 廿npi section Figure 4 Figure 5 1 car Figure 6

Claims (1)

[Claims] A collective wastewater treatment facility that collects wastewater from buildings and structures such as office buildings, apartment complexes, and other facilities such as stores, factories, hotels, and station buildings in urban areas and converts it into fresh water; A water recycling system that supplies treated wastewater to each building, and an irrigation canal that circulates the treated wastewater as water used for heat exchange with heat pumps, refrigerators, etc. in the area. A system that uses part of the water recycling system as an energy bus.