Method for treating high-turbidity water
A treatment method and wastewater technology, which is applied in flotation water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems such as difficult discharge of effluent and difficult removal of oily substances, etc. Achieve the effect of good water quality, convenient management and simple operation
Inactive Publication Date: 2010-02-10
张晶
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Problems solved by technology
The common method to treat this kind of wastewater is the combination of coagulation method and filtration method. This method has a good treatment effect on the organic matter and sediment in it, but the oily substances in it are difficult to remove, and the effluent is difficult to discharge up to the standard.
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[0014] (1) The waste water enters the grid tank to remove large suspended matter to facilitate subsequent treatment. The grid inclination angle is 60°, the grid gap is 0.01m, and the grid width is 0.01m;
[0015] (2) The effluent enters the flocculation tank to remove the organic matter. The flocculant is polyacrylamide, and the flocculation tank is perforated and swirling. The flocculation time of the flocculation tank is 25 minutes. The flocculation tank adopts a variable speed reaction, the inlet flow rate is 0.5m / s, the water flow rolls from top to bottom along the 8 grid shafts in sequence, the outlet flow rate is 0.15m / s, and the residence time of each section is 400s; polyacrylamide (PAM) is made of propylene The organic high molecular polymer formed by amide polymerization is soluble in water, non-corrosive, and relatively stable at room temperature. It has a long molecular chain and has efficient adsorption and bridging effects on sediment particles in water;
[0016]...
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The invention belongs to the technical field of waste water treatment and particularly relates to a method for treating high-turbidity water. The invention provides the method for treating high-turbidity water, which is simple in operation and excellent in treatment effect and ensures that the effluent can be discharged directly and used as drinking water. The method for treating high-turbidity water comprises the following steps of: (1), allowing waste water to enter a grid tank for removing large suspended matters and ensuring smooth follow-up treatment; (2), allowing effluent obtained by the step (1) to enter a flocculation tank, and adopting a flocculating agent of polyacrylamide to remove organic matters in the effluent; (3), allowing effluent obtained by the step (2) to enter a sedimentation tank to settle silt; (4), allowing effluent obtained by the step (3) to enter a floataion tank for removing oil; (5), filtering effluent obtained by the step (4) to reduce the turbidity of water to below 3 degrees; and (6) disinfecting and sterilizing effluent obtained by the step (5). The effluent obtained after the treatment can be used as drinking water.
Description
technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method for high-turbidity wastewater. Background technique [0002] Due to the rapid development of the national economy, waste water containing harmful and toxic substances, agricultural fertilizers, and pesticides are discharged or infiltrated into the river without treatment, directly or indirectly polluting the water body. As my country's planned economy turns to a market economy, the old enterprises in the national economy are speeding up technological upgrading, the continuous emergence of new enterprises and the overall development of society have brought about major changes in human lifestyles, which will inevitably lead to the renewal of pollution sources. Mercury and hexavalent Chromium, cadmium, copper, and volatile phenols disappear or do not exceed the standard. At the same time, there are new excessive substances such as total pho...
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IPC IPC(8): C02F9/00C02F1/52C02F1/24C02F1/40C02F1/50
Inventor 张晶
Owner 张晶