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1153results about How to "Improve volumetric efficiency" patented technology

Device and method for treatment of low-temperature and low-carbon ammonia nitrogen wastewater on basis of solid-phase denitrification and heterotrophic nitrification-aerobic denitrification

The invention provides a device and a method for treatment of low-temperature and low-carbon ammonia nitrogen wastewater on the basis of solid-phase denitrification and heterotrophic nitrification-aerobic denitrification. The device comprises a reactor and a reflux system, wherein the upper part and lower part of the reactor are respectively provided with a fluidized bed aerobic zone and a filterpool anoxic zone which are filled with a solid carbon source filling material and separated by a porous water distribution plate; an aeration tube is arranged on the water distribution plate and connected with an aeration device through a gas flowmeter; the lower end of the reactor is provided with a water inlet; the upper end of the reactor is provided with a water outlet; an effluent of the reactor enters a secondary sedimentation tank, and an effluent of the secondary sedimentation tank enters an intermediate water storage tank through an overflowing opening; the upstream end of the refluxsystem communicates with an effluent of the intermediate water storage tank; the downstream end of the reflux system communicates with the reflux opening of the lower end of the reactor through a liquid flowmeter; and the interior of the fluidized bed aerobic zone is provided with a dissolved oxygen monitor and a nitrate concentration monitor. The device and the method provided by the invention can still realize highly-efficient removal of ammonia nitrogen and total nitrogen under the conditions of low temperature and low carbon.
Owner:CHONGQING UNIV OF TECH

Lithium bromide absorption-compression type series boosting refrigeration/heating pump system

The invention discloses a lithium bromide absorption-compression type series boosting refrigeration / heating pump system. A refrigerant steam outlet of a generator (1) is connected with a refrigerant steam inlet of a condenser (2); a liquid refrigerant outlet of the condenser (2) passes through a throttling element (3) and is connected with a liquid refrigerant inlet of an evaporator (4); a liquid refrigerant outlet of the evaporator (4) passes through a refrigerant circulation pump (5) and is connected with a sprayer I (44); a refrigerant steam outlet of the evaporator (4) passes through a compressor (6) and is connected with a refrigerant steam inlet of an absorber (7); a dilute solution outlet of the absorber (7) passes through a solution circulation pump (8) and a solution reheater (9) sequentially and is connected with a dilute solution inlet of the generator (1); and a condensed solution outlet of the generator (1) passes through the solution reheater (9) and is connected with a sprayer II (74). The lithium bromide absorption-compression type series boosting refrigeration / heating pump system has the characteristics of lower requirement on the temperature of a heat source, reduction in the compression ratio of the compressor and the like.
Owner:ZHEJIANG SCI-TECH UNIV

Absorption-mechanical compression coupling refrigeration and cold accumulation system

The invention belongs to the technical field of refrigeration and cold accumulation, and discloses an absorption-mechanical compression coupling refrigeration and cold accumulation system. The absorption-mechanical compression coupling refrigeration and cold accumulation system comprises an absorption bed, a desorbing valve, a cooler, a compressor, a condenser, a high-pressure liquid-storage tank, a throttling valve, a low-pressure liquid-storage tank, an evaporator and an absorbing valve. An absorption bed heat exchanger is arranged in the absorption bed; an absorbing agent is filled in the absorption bed; the outlet of the absorption bed is connected with the inlet of the desorbing valve; the outlet of the desorbing valve is connected with the inlet of the cooler; the outlet of the cooler is connected with the inlet of the compressor; the outlet of the compressor is connected with the inlet of the condenser; the outlet of the condenser is connected with the inlet of the high-pressure liquid-storage tank; the outlet of the high-pressure liquid-storage tank is connected with the inlet of the throttling valve; the outlet of the throttling valve is connected with an inlet of the low-pressure liquid-storage tank; the outlet of the low-pressure liquid-storage tan is connected with the inlet of the evaporator; the outlet of the evaporator is connected with the inlet of the absorbing valve; and the outlet of the absorbing valve is connected with the inlet of the absorbing bed. With the adoption of the absorption-mechanical compression coupling refrigeration and cold accumulation system, low-grade heat source can be utilized to realize cold accumulation without cold lass, so that the power consumption of the system and the operation cost are obviously reduced.
Owner:SHANDONG UNIV
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