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Method for treating membrane concentrate by applying solar evaporation device

An evaporation device, solar energy technology, applied in water/sewage treatment, chemical instruments and methods, water/sewage treatment equipment, etc., can solve the problems of serious corrosion and scaling of evaporation equipment, high equipment cost and operating cost, etc. Good thermal stability, avoid equipment corrosion and structural problems, and achieve the effect of secondary use

Inactive Publication Date: 2019-04-09
HEILONGJIANG HEIKE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of serious corrosion and fouling of existing evaporation equipment, high equipment costs and high operating costs, and provide a method for evaporating membrane concentrates based on solar energy technology

Method used

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  • Method for treating membrane concentrate by applying solar evaporation device
  • Method for treating membrane concentrate by applying solar evaporation device

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Experimental program
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specific Embodiment approach 1

[0013] Specific implementation mode one: the method for applying the solar evaporation device to process the film concentrate in this embodiment is implemented according to the following steps:

[0014] One, the solar evaporation device comprises a solar heat collecting unit 1, an evaporator 2, a condenser 3 and a preheating device 4, and the solar heat collecting unit 1 includes a solar heat collector 101 and a heat medium storage tank 102, and in the heat medium storage tank 102 The heat medium flows into the solar collector 101 through the heat medium input pipeline 103 for heating, and then flows into the three-way valve 109 through the heat medium output pipeline 104 to mix with the heat medium from the heat medium return pipeline 208, and passes through the heat medium The control button 110 stably outputs the heat medium with a temperature of 120-180°C, and then flows into each parallel heat medium coil heat exchanger 203 through the heat medium transportation pipeline 2...

specific Embodiment approach 2

[0017] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the solar evaporation device includes a solar heat collection unit 1, an evaporator 2, a condenser 3 and a preheating device 4, and the solar heat collection unit 1 includes solar energy The heat collector 101 and the heat medium storage tank 102, the inlet of the solar heat collector 101 is communicated with the liquid outlet of the heat medium storage tank 102 through the heat medium input pipeline 103, and one end of the heat medium return pipeline 208 is connected with the heat medium storage tank 102. The liquid inlet is connected, the other end of the heat medium return pipe 208 is respectively connected with the liquid outlet of each heat medium coil heat exchanger 203, and the outlet of the solar collector 101 is connected to the three-way valve 109 through the heat medium output pipe 104 One end of the branch pipe 111 is connected with the heat medium return pipe ...

specific Embodiment approach 3

[0022] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that a first liquid pump 105 is provided in the heat medium input pipe 103 .

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Abstract

The invention discloses a method for treating membrane concentrate by applying a solar evaporation device and belongs to the technical field of treatment of membrane concentrate. By adoption of the method, the problems of serious corrosion and scaling and high equipment cost and operation cost in the existing evaporation equipment are solved. The treatment method comprises the following steps that(1) a heat medium in a heat-medium storage tank flows into a solar heat collector for heating through a heat-medium input pipeline, and flows into a three-way valve through a heat-medium output pipeline to be mixed with the heat medium from a heat-medium return pipeline so as to regulate the temperature of the heat medium; (2) a heat-medium coil heat exchanger is arranged below each evaporation groove, the heat medium returns into the heat-medium storage tank through the pipeline; (3) steam after the membrane concentrate in an evaporation pool flows into a condenser, and the membrane concentrate in the evaporation pool realizes solid-liquid separation under heating of the coil heat exchanger. The method disclosed by the invention has the beneficial effects that solar energy is adopted asa heat source of the evaporation device, so that the operation cost is reduced; a sequencing-batch type evaporation structure is adopted in an evaporator, so that the heat-supply stability is good.

Description

technical field [0001] The invention belongs to the technical field of membrane concentrate liquid treatment, and in particular relates to a method for evaporating membrane concentrate liquid. Background technique [0002] At present, the commonly used membrane separation processes at home and abroad mainly include microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO). The nanofiltration and reverse osmosis processes are driven by pressure difference, using the selectively permeable intercepted substances of the membrane to separate the solvent from the liquid separation operation technology, so the membrane concentrate will be produced. Membrane concentrate has the characteristics of high concentration of organic matter, high content of inorganic salts, strong corrosiveness, and poor biodegradability. If it is not properly treated and discharged directly into the environment, it will cause serious secondary pollution. [0003] At present,...

Claims

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Application Information

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IPC IPC(8): C02F1/14
CPCC02F1/14C02F2201/007C02F2201/002Y02A20/212
Inventor 任滨侨许铁夫宋晓晓金玉赵路阳欧阳凤菊
Owner HEILONGJIANG HEIKE TECH CO LTD
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