Landfill leachate two-stage reverse osmosis treatment system and reverse osmosis device thereof
The technology of a reverse osmosis device and treatment system is applied in the field of landfill leachate two-stage reverse osmosis treatment system and its reverse osmosis device, which can solve the problems of low water production rate, achieve high utilization rate, strong mobility, and improve The effect of water production rate
Pending Publication Date: 2021-07-27
CHONGQING GROUP SANFENG TECH
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Problems solved by technology
[0006] In view of this, the purpose of the present invention is to solve the problem of low water production rate in existing leachate treatment systems, and to provide a two-stage reverse osmosis treatment system for landfill leachate and its reverse osmosis device
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[0030] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.
[0031] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...
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The invention belongs to the technical field of sewage treatment equipment, and relates to a landfill leachate two-stage reverse osmosis treatment system and reverse osmosis devices thereof. The system comprises two reverse osmosis devices, a water inlet end of a first-stage frequency conversion plunger pump is communicated with a raw water pipe, a first-stage permeate liquid outlet pipe is communicated with the water inlet end of a second-stage frequency conversion plunger pump, and a second-stage concentrated liquid outlet pipe is communicated with the water inlet end of the first-stage frequency conversion plunger pump; wherein the reverse osmosis device comprises a variable-frequency plunger pump, a variable-frequency circulating pump and a reverse osmosis membrane group which are sequentially connected in series, and the variable-frequency plunger pump and the variable-frequency circulating pump are both arranged on a water inlet pipe of the reverse osmosis membrane group; a concentrated liquid return pipe is arranged between the variable-frequency plunger pump and the variable-frequency circulating pump, one end of the concentrated liquid return pipe is communicated with the water inlet pipe, and the other end is communicated with the concentrated liquid outlet pipe. The secondary concentrated solution is pressed back to a primary water inlet end and then participates in production circulating filtration, so that the discharge of the secondary concentrated solution is avoided, the total water yield is equal to the value obtained by subtracting the discharge amount of a primary reverse osmosis concentrated solution from the total water inlet amount, and the total water yield is improved.
Description
technical field [0001] The invention belongs to the technical field of sewage treatment equipment, and relates to a two-stage reverse osmosis treatment system for landfill leachate and a reverse osmosis device thereof. Background technique [0002] Landfill leachate in my country mainly includes "fresh" leachate produced by waste incineration power plants and "old" leachate produced by landfills. The leachate treatment capacity of waste incineration power plants is relatively stable and will not exceed the design limit, and it is more "fresh" and easier to biochemically treat than landfill leachate, so the treatment process can be solidified into two parts: biochemical treatment process and advanced treatment process . Landfill leachate is seriously affected by time. As the landfill time increases, the concentration of organic matter in landfill leachate decreases, and organic compounds with poor biodegradability and large molecular weight dominate. The efficiency is getti...
Claims
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IPC IPC(8): C02F9/04C02F103/06
CPCC02F9/00C02F1/001C02F1/441C02F5/08C02F2301/066C02F2301/08C02F2303/14C02F2103/06Y02A20/131
Inventor 曹艺雷东徐代平张云孟刘洋胥良韩帛锦
Owner CHONGQING GROUP SANFENG TECH