Terminal processing technique of industrial wastewater
A technology of terminal treatment and process method, which is applied in the field of terminal treatment of coal chemical wastewater, which can solve the problems of high cost, large amount of activated carbon, and small amount of treatment.
Inactive Publication Date: 2015-12-02
胡日中
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Problems solved by technology
The above methods are not only costly but also incomplete
For example: using activated carbon adsorption method, the amount of activated carbon used is large and the cost is high, but the reduction of COD is small, and the activated carbon is not easy to regenerate; it is also costly to eliminate COD by strong oxidation with ozone; if the reverse osmosis filtration method is used, not only the equipment is expensive, but the processing capacity Less and high frequency of backwashing, a large amount of concentrated water can only be evaporated naturally in the pool
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[0020] The object of the present invention is provided by following program, and concrete example process method step is as follows:
[0021] Step 1: Take 10kg of coking waste water that has not been degraded after comprehensive, biochemical treatment and fine filtration as the stock solution;
[0022] Raw liquid requirement standard:
[0023]
[0024] Step 2: Add 1-10% of the treated pulverized coal and a small amount of dispersant and flocculant into the raw liquid pool, stir well, and settle for more than 6 hours;
[0025] The third step: use a 1-5μm ceramic membrane for the first filtration;
[0026] Step 4: Add 1-10% of treated carbon black and a small amount of dispersant and flocculant to the filtrate pool filtered for the first time, stir well, and settle for more than 12 hours;
[0027] Step 5: Use a ceramic membrane of ≤10nm for the second filtration;
[0028] You can get clear water with the following effects:
[0029]
[0030] After testing by the quality...
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Abstract
A terminal processing technique of industrial wastewater is characterized by including 1, pumping raw liquor into a settling tank 2 with a raw liquor pump 1, adding absorber 3, performing uniform mixing to allow first absorption for the raw liquor, after completion of absorbing, and performing first filtering with a ceramic membrane filter 5; 2, adding absorber 6 into a settling tank 7 which is subjected to first filtering, performing uniform mixing to allow second absorption, after completion of absorbing, and performing second filtering with a ceramic membrane filter 8 having smaller pore diameter; allowing fresh water subjected to second filtering into a clear water tank 9 to obtain qualified recycled water which is recyclable for production or emission. The terminal processing technique has the advantages that the technique is simple, the absorbers are recyclable, no environmental pollution is caused, and the filtrate meets the natural emission standards.
Description
technical field [0001] The invention relates to a method for treating industrial wastewater, in particular to a method for terminal treatment of coal chemical wastewater. technical background [0002] The terminal black liquor of coal chemical industry wastewater is a kind of industrial wastewater with complex components, not easy to degrade, and difficult to treat, which brings great harm to industrial and agricultural production and the surrounding environment. In particular, the terminal treatment of coal chemical industry wastewater is known as a major technical problem worldwide. [0003] For the terminal treatment of coal chemical wastewater, the current treatment methods are: activated carbon adsorption method, ozone method, reverse osmosis filtration method and pool natural evaporation method, etc. The above methods are not only costly but also incomplete. For example: using activated carbon adsorption method, the amount of activated carbon used is large and the co...
Claims
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IPC IPC(8): C02F9/02C02F9/04C02F103/34
Inventor 胡日中
Owner 胡日中