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WO2018193320A1 - Sewage heat recovery unit - Google Patents

Sewage heat recovery unit Download PDF

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Publication number
WO2018193320A1
WO2018193320A1 PCT/IB2018/050778 IB2018050778W WO2018193320A1 WO 2018193320 A1 WO2018193320 A1 WO 2018193320A1 IB 2018050778 W IB2018050778 W IB 2018050778W WO 2018193320 A1 WO2018193320 A1 WO 2018193320A1
Authority
WO
WIPO (PCT)
Prior art keywords
sewage
settling tank
solid
warm
heat recovery
Prior art date
Application number
PCT/IB2018/050778
Other languages
French (fr)
Inventor
Kaspars GRINBERGS
Original Assignee
Grinbergs Kaspars
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grinbergs Kaspars filed Critical Grinbergs Kaspars
Publication of WO2018193320A1 publication Critical patent/WO2018193320A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
    • F24D11/025—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy contained in waste water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0206—Heat exchangers immersed in a large body of liquid
    • F28D1/0213—Heat exchangers immersed in a large body of liquid for heating or cooling a liquid in a tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0472—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C2001/005—Installations allowing recovery of heat from waste water for warming up fresh water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/20—Sewage water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the invention relates to sewage heat recovery facilities, particularly heat recovery units for heating municipal buildings or industrial objects and providing hot water to multi -apartment houses.
  • the UK patent application publication No. 2 304 977 describes a water supply system with heat recovery where warm sewage is delivered to a heat exchanger before being drained to the sewer system, thus partially recovering contained heat and supplying the heat back to the system.
  • the aim of this invention is to improve the effectiveness of a heat recovery facility and increase the efficiency ratio of heat recovery while improving maintenance.
  • the purpose of the invention is achieved by creating a heat recovery unit that contains the following main elements: a warm sewage settling tank, a solid sewage settling tank, a warm wastewater supply pipe, a sewage discharge pipe, a pressure sewage discharge pipe, a sewage pump, a sewage flush valve, a heat exchange circuit, and a heat pump.
  • the warm sewage enters the warm sewage settling tank via the solid particle settling tank's overflow channel or T-junction into the solid warm sewage settling tank, from which it is subsequently removed to the sewer from the lower part of the settling tank, via a discharge pipe connected to the warm sewage settling tank.
  • the overflow channel or T-junction of the solid particle settling tank is the only element through which warm sewage can enter the warm wastewater settling tank from the solid particle settling tank.
  • the sewage heat recovery unit contains a heat exchange circuit inside the sewage settling tank (around the solid particle settling tank) in order to recover heat from the sewage inside the warm sewage settling tank.
  • the heat exchange circuit is connected to a heat pump for recovery of sewage heat.
  • the heat exchange circuit is arranged closer to the outer surface of the solid sewage settling tank than to the inner surface of the warm wastewater settling tank to increase the heat recovery efficiency also from the wastewater flowing into the solid sewage settling tank.
  • the heat exchange circuit is placed directly next to the outer surface of the solid particle settling tank, further improving heat recovery efficiency.
  • the heat exchange circuit is placed around the outer wall of the solid particle settling tank, preferably in a helical configuration.
  • the unit contains pressure sewage discharge pipe 5, connecting solid particle settling tank 2 to sewage supply pipe 4.
  • One end of pressure sewage discharge pipe 5, which is inside solid particle settling tank 2, is connected to sewage pump 6.
  • Sewage pump 6 is placed in the lower part of the solid particle settling tank 2 - at the very base of solid particle settling tank 2. Sewage pump 6 is also connected to pressure sewage discharge pipe 5 so that the wastewater pumped out by the sewage pump 6 can be sent to the aforementioned sewage supply pipe 4.
  • Heat exchange circuit 9 is closer to the external surface of solid particle settling tank 2 than to the internal surface of warm sewage settling tank 1, increasing the effectiveness of recovering heat from wastewater that flows into solid particle settling tank 2.
  • Helical heat exchange circuit 9 is situated near the external surface of solid particle settling tank 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

The invention relates to sewage heat recovery facilities, particularly heat recovery units for heating municipal buildings or industrial objects and providing hot water to multi-apartment houses. Sewage heat recovery unit comprising a warm sewage settling tank (1); a solid sewage settling tank (2) placed within the warm sewage settling tank (1); warm wastewater supply pipe (3) through which a warm sewage is supplied. The sewage heat recovery unit comprises a sewage pump (6) placed within the solid sewage settling tank (2) and a sewage flush valve (8) for crushing a developed layer of solid particles in the solid sewage settling tank (2). The unit comprises a heat exchange circuit (9) with a heat pump (10) for heat removal from wastewater in warm sewage settling tank (1).

Description

SEWAGE HEAT RECOVERY UNIT
The invention relates to sewage heat recovery facilities, particularly heat recovery units for heating municipal buildings or industrial objects and providing hot water to multi -apartment houses.
Several sewage heat recovery facilities are known to exist. U.S. patent publication No. 4,341,263 describes a sewage heat exchanger receiving warm wastewater to recover and reintroduce energy from the sewage into a house system. This facility relies on a special heat exchange fluid complicates both the system itself and the amount of maintenance required.
International patent application publication No. WO2001/98714 describes a heat recovery unit built into a drainage siphon. The unit consists of heat exchange piping inside the system, providing the recovery of heat from inflowing warm sewage.
The UK patent application publication No. 2 304 977 describes a water supply system with heat recovery where warm sewage is delivered to a heat exchanger before being drained to the sewer system, thus partially recovering contained heat and supplying the heat back to the system.
The UK patent application No. 2 402 204 discloses a heat exchanger that comprises a tank containing and communicating domestic waste water in heat exchange relationship with a supply of fresh cold water. German patent application publication No. 2806029 discloses similar heat recovering system. International patent application publication No. WO2016/033645 discloses a plate-like evaporator shaped to cause incoming fluid from which a heat is to be extracted to follow an extended, circuitous path.
These systems do not provide for long periods of storing sewage in the system, which would allow recovery of heat as efficiently as possible. This is due to the biological activity of sewage, which creates biofilms and other sedimentation within the system. Therefore, such systems are difficult to maintain and require constant monitoring.
The aim of this invention is to improve the effectiveness of a heat recovery facility and increase the efficiency ratio of heat recovery while improving maintenance. The purpose of the invention is achieved by creating a heat recovery unit that contains the following main elements: a warm sewage settling tank, a solid sewage settling tank, a warm wastewater supply pipe, a sewage discharge pipe, a pressure sewage discharge pipe, a sewage pump, a sewage flush valve, a heat exchange circuit, and a heat pump.
The warm sewage settling tank is one of the main elements of the unit, intended for storing warm sewage for effective recovery of the wastewater heat. The sewage heat recovery unit also includes a solid sewage settling tank positioned in the upper part of the solid sewage settling tank, preferably concentrically, and connected (or in in fluid communication) to said warm sewage settling tank via an overflow channel or T- junction. The solid sewage settling tank is connected to a warm sewage supply pipe, through which warm sewage is supplied to the solid sewage settling tank of the sewage heat recovery unit. The warm sewage enters the warm sewage settling tank via the solid particle settling tank's overflow channel or T-junction into the solid warm sewage settling tank, from which it is subsequently removed to the sewer from the lower part of the settling tank, via a discharge pipe connected to the warm sewage settling tank. The overflow channel or T-junction of the solid particle settling tank is the only element through which warm sewage can enter the warm wastewater settling tank from the solid particle settling tank.
The wastewater heat recovery unit also contains a pressure sewage discharge pipe, which connects the solid particle settling tank to the sewage discharge pipe, so that sewage can be sent from the solid particle settling tank to the sewage discharge pipe and into the sewer. One end of the pressure sewage discharge pipe is connected to a sewage pump and the other end is connected to said sewage discharge pipe. The sewage pump is intended to perform two functions. Firstly, the sewage pump sucks up sewage from the solid particle settling tank and sends it to the sewage discharge pipe via the pressure sewage discharge pipe. Secondly, the sewage pump sucks up sewage from the solid particle settling tank and sends it to the sewage flushing valve in the pressure sewage discharge pipe, via which the sewage is sent to the solid particle settling tank's upper layer of solid particles, breaking it up. The sewage pump is situated in the lower part of the solid particle settling tank, preferably near the base of the solid particle settling tank - as far as possible form the biofilm formation zone. The sewage flushing valve is located in the upper part of the solid particle settling tank, so that, when said sewage flushing valve is opened, a stream of sewage is sent to break up the layer of solid particles that has formed inside the solid particle settling tank. This layer is formed mostly at the level of wastewater inside the solid particle settling tank. Such construction allows for effective breakup of the biofilm that inevitably forms in sewage. This increases the required maintenance interval of the unit and reduces running costs.
The sewage heat recovery unit contains a heat exchange circuit inside the sewage settling tank (around the solid particle settling tank) in order to recover heat from the sewage inside the warm sewage settling tank. The heat exchange circuit is connected to a heat pump for recovery of sewage heat.
In one of the solutions, the heat exchange circuit is arranged closer to the outer surface of the solid sewage settling tank than to the inner surface of the warm wastewater settling tank to increase the heat recovery efficiency also from the wastewater flowing into the solid sewage settling tank. In another solution, the heat exchange circuit is placed directly next to the outer surface of the solid particle settling tank, further improving heat recovery efficiency. The heat exchange circuit is placed around the outer wall of the solid particle settling tank, preferably in a helical configuration.
The solution is clarified in attached Fig. 1, which illustrates the principal scheme of the sewage heat recovery unit.
Fig. 1 illustrates a sewage heat recovery unit consisting of warm sewage settling tank warm sewage settling tank 1 and concentrically installed solid particle settling tank 2. Solid particle settling tank 2 is in fluid communication with warm sewage settling tank 1, via the solid particle settling tank 2 overflow T-junction 22 in the upper part of solid particle settling tank 2. The unit also contains a warm wastewater supply pipe 3, which is connected to solid particle settling tank 2 and through which the sewage heat recovery unit's solid particle settling tank 2 receives incoming warm sewage. The inlet of warm wastewater supply pipe 3 is located in the upper part of solid particle settling tank 2. The unit also contains a sewage supply pipe 4, connected to warm sewage settling tank 1 for drainage of the wastewater it contains. Further, the unit contains pressure sewage discharge pipe 5, connecting solid particle settling tank 2 to sewage supply pipe 4. One end of pressure sewage discharge pipe 5, which is inside solid particle settling tank 2, is connected to sewage pump 6. Sewage pump 6 is placed in the lower part of the solid particle settling tank 2 - at the very base of solid particle settling tank 2. Sewage pump 6 is also connected to pressure sewage discharge pipe 5 so that the wastewater pumped out by the sewage pump 6 can be sent to the aforementioned sewage supply pipe 4.
This sewage heat recovery unit is characterised by an additional element - sewage flush valve 8, which is connected to pressure sewage discharge pipe 5 in the upper part or area of solid particle settling tank 2, above the level of contained wastewater, which results in a discharge stream of wastewater when this sewage flush valve 8 is opened, thereby breaking up the upper layer of solid particles that accumulates in solid particle settling tank 2. This upper layer forms at the level of wastewater inside solid particle settling tank 2. The breakup of this layer, or biofilm, eliminates the need for excessive maintenance, thereby reducing running costs. In addition, the unit contains heat exchange circuit 9, located in sewage settling tank 1, around solid particle settling tank 2, for recovering heat from the wastewater contained in the warm sewage settling tank 1, and heat exchange circuit 9 is connected to heat pump 10. Heat exchange circuit 9 is closer to the external surface of solid particle settling tank 2 than to the internal surface of warm sewage settling tank 1, increasing the effectiveness of recovering heat from wastewater that flows into solid particle settling tank 2. Helical heat exchange circuit 9 is situated near the external surface of solid particle settling tank 2.

Claims

1. Sewage heat recovery unit comprising:
- a warm sewage settling tank (1);
- a solid sewage settling tank (2) placed within the warm sewage settling tank
(1) and in fluid communication with said warm sewage settling tank (1) via an overflow channel (22) of the solid sewage settling tank (2) positioned in the upper part of the solid sewage settling tank (2);
- warm wastewater supply pipe (3) connected to the solid sewage settling tank
(2) and through which a warm sewage is supplied to the solid sewage settling tank (2) of the sewage heat recovery unit;
- a sewage discharge pipe (4) connected to the warm sewage settling tank (1) for discharge of sewage therein;
- a pressure sewage discharge pipe (5) connecting the solid sewage settling tank (2) with the sewage discharge pipe (4)
- a sewage pump (6) placed within the solid sewage settling tank (2), wherein the sewage pump (6) is connected to the pressure sewage discharge pipe (5) in such a way that the wastewater pumped by the sewage pump (6) is transferred to said sewage discharge pipe (4);
- a sewage flush valve (8) connected to the pressure sewage discharge pipe (5) in the area of the upper part of the solid sewage settling tank (2) above the wastewater level therein in such a way that by the activation of said sewage flush valve (8) a stream of wastewater is discharged crushing a developed layer of solid particles in the solid sewage settling tank (2); and
- a heat exchange circuit (9) placed within the warm sewage settling tank (1) around the solid sewage settling tank (2) therein for heat removal from wastewater in warm sewage settling tank (1), and wherein the heat exchange circuit (9) is connected to a heat pump (10).
2. Sewage heat recovery unit according to Claim 1, characterized in that the heat exchange circuit (9) is arranged closer to the outer surface of the solid sewage settling tank (2) than to the inner surface of the warm wastewater settling tank (1) to increase the heat removal efficiency also from the wastewater flowing into the solid sewage settling tank (2).
3. Sewage heat recovery unit according to Claim 2, characterized in that the heat exchange circuit (9) is arranged at the outer surface of the solid sewage settling tank (2).
4. Sewage heat recovery unit according to any one of the Claims 1 to 3, characterized in that the heat exchange circuit (9) is in the form of spiral.
5. Sewage heat recovery unit according to any one of the Claims 1 to 4, characterized in that the solid sewage settling tank (2) is arranged concentric with respect to the warm sewage settling tank (1).
6. Sewage heat recovery unit according to any one of the Claims 1 to 5, characterized in that the sewage pump (6) is arranged within the lower part of the solid sewage settling tank (2), preferably at the base of the solid sewage settling tank (2).
PCT/IB2018/050778 2017-04-21 2018-02-08 Sewage heat recovery unit WO2018193320A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LVP-17-26A LV15374B (en) 2017-04-21 2017-04-21 Sewage heat recovery unit
LVP-17-26 2017-04-21

Publications (1)

Publication Number Publication Date
WO2018193320A1 true WO2018193320A1 (en) 2018-10-25

Family

ID=59569358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/050778 WO2018193320A1 (en) 2017-04-21 2018-02-08 Sewage heat recovery unit

Country Status (2)

Country Link
LV (1) LV15374B (en)
WO (1) WO2018193320A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ308327B6 (en) * 2019-02-26 2020-05-13 Jan Topol Method of using the thermal energy of municipal waste water from residential houses and condominiums and the apparatus for the method
CN111720874A (en) * 2020-05-29 2020-09-29 万江新能源集团有限公司 Sewage utilization draws water and moves back side and contains device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070289921A1 (en) * 2006-05-26 2007-12-20 Ecodays Co., Ltd. Apparatus And Method For Treating Wastewater
RU2473473C2 (en) * 2011-03-24 2013-01-27 Российская академия сельскохозяйственных наук Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) Apparatus for processing fermented organic substrates
CN103822405A (en) * 2014-03-13 2014-05-28 哈尔滨工业大学 Wall type pollution cleaning, contaminant release and heat exchange integrated native sewage heat pump energy increasing device
CN103836840A (en) * 2014-03-13 2014-06-04 哈尔滨工业大学 Pipe shell type scrubbing and descaling and heat exchanging integrated raw sewage heat pump energy rising device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806029A1 (en) * 1978-02-14 1979-08-23 Messerschmitt Boelkow Blohm Recovery system for heat in waste water - has heat exchanger upstream of which are coarse and fine filters
US4341263A (en) * 1980-11-11 1982-07-27 Morteza Arbabian Waste water heat recovery apparatus
GB2402204A (en) * 2003-05-21 2004-12-01 Villers Pierre De A heat exchanger for waste water
AU2015311608A1 (en) * 2014-09-02 2017-03-16 Nexus Ewater Pty Ltd Evaporator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070289921A1 (en) * 2006-05-26 2007-12-20 Ecodays Co., Ltd. Apparatus And Method For Treating Wastewater
RU2473473C2 (en) * 2011-03-24 2013-01-27 Российская академия сельскохозяйственных наук Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) Apparatus for processing fermented organic substrates
CN103822405A (en) * 2014-03-13 2014-05-28 哈尔滨工业大学 Wall type pollution cleaning, contaminant release and heat exchange integrated native sewage heat pump energy increasing device
CN103836840A (en) * 2014-03-13 2014-06-04 哈尔滨工业大学 Pipe shell type scrubbing and descaling and heat exchanging integrated raw sewage heat pump energy rising device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ308327B6 (en) * 2019-02-26 2020-05-13 Jan Topol Method of using the thermal energy of municipal waste water from residential houses and condominiums and the apparatus for the method
CN111720874A (en) * 2020-05-29 2020-09-29 万江新能源集团有限公司 Sewage utilization draws water and moves back side and contains device

Also Published As

Publication number Publication date
LV15374A (en) 2018-11-20
LV15374B (en) 2019-05-20

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