Method for recycling reverse osmosis reclaimed water
A technology of reverse osmosis and reclaimed water, applied in osmosis/dialysis water/sewage treatment, etc., can solve the problems of consuming a lot of manpower, material resources and financial resources, seldom used by enterprises, and achieve the effect of low treatment cost
Inactive Publication Date: 2010-07-07
SHANGHAI LIGHT IND RES INST
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Problems solved by technology
At present, the commonly used reclaimed water reuse is to pass the wastewater in the wastewater station through complex wastewater treatment methods such as removing suspended solids, ions and COD, which requires a lot of manpower, material and financial resources, so it is rarely used by ordinary enterprises.
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[0012] figure 1 It is a schematic diagram of reclaimed water treatment of RO concentrated wastewater and flushing process wastewater according to the present invention. Please refer to figure 1 Shown, a kind of reverse osmosis reclaimed water method of the present invention comprises the following steps:
[0013] First, carry out sand filtration, activated carbon filtration, and precision filtration 101-103 on the raw water (such as tap water). The suspended solids in the finely filtered water after sand filtration and carbon filtration are greatly reduced compared with tap water, which is conducive to cooling and circulating water systems. Heat conduction or other application of the process;
[0014] Secondly, in step 104, the filtered water is subjected to reverse osmosis treatment to generate concentrated water and pure water; preferably, the pure water treated by reverse osmosis is also processed 105 through EDI or mixed bed;
[0015] Afterwards, in step 106, the concen...
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The invention relates to a method for recycling reverse osmosis reclaimed water, which comprises the following steps of: carrying out reverse osmosis treatment on raw water and generating concentrated water and pure water; collecting the concentrated water generated after the reverse osmosis treatment into a concentrated water collecting pool; collecting the washed wastewater of the pure water generated after the reverse osmosis treatment and converging in the concentrated water collecting pool for carrying out fusion treatment; and delivering a fused reclaimed water flow to a cooling circulation water system. The invention directly combines the concentrated wastewater of reverse osmosis and the wastewater after the pure water is washed by a process or fuses by simple treatment with low treatment cost, and the recycled water can be widely applied to the cooling circulation water system which accounts for 80 percent of industrial water.
Description
technical field [0001] The invention relates to waste water treatment technology, in particular to a reverse osmosis reclaimed water reuse method. Background technique [0002] RO (reverse osmos) reverse osmosis treatment relies on high-pressure driving force and semi-permeable membrane to separate concentrated water from pure water. Since the early 1990s, my country's RO technology has developed rapidly. In industrial production, RO molecular separation method replaces traditional The ion exchange method has been widely used in the washing process of electronic components, stainless steel plates, automobile and household appliance shells, medicine and food, and daily chemical packaging containers. [0003] Due to the high ion concentration of RO concentrated water, it cannot be used by other processes, except for a small amount for watering flowers and washing roads, most of it enters the wastewater treatment station. On the other hand, the pure water of RO also enters the ...
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IPC IPC(8): C02F1/44
Inventor 韩仁琪
Owner SHANGHAI LIGHT IND RES INST