Falling dry type constructed wetland grey water treatment system and method in grey-black separation mode
A constructed wetland and separation mode technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the high operating cost control system, limit the efficiency of sewage treatment, and the difficulty of sewage treatment Increase the efficiency of digestion and denitrification, improve the removal efficiency, and solve the effect of poor denitrification performance
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Embodiment 1
[0037] like Figure 1-2 An embodiment of the gray water treatment system for a dry constructed wetland in a gray-black separation mode of the present invention includes a collection sedimentation tank 2 that is sequentially connected through a sewage pipeline 1 and a dry constructed wetland 3; the sewage pipeline 1 The peristaltic pump 5 with timer 4 is provided on it; Described drop dry constructed wetland 3 comprises pond body 6, the matrix layer 7 that is arranged in described pond body 6, and the plant layer that is arranged on the described matrix layer 7 8. The matrix layer 7 includes a ceramsite layer 9, a zeolite layer 10, a river sand layer 11 and a large gravel layer 12 arranged in sequence from bottom to top, and a water outlet 13 is provided at the bottom of the pool body 6. In the present invention, the water outlet 13 is arranged at the bottom, which can ensure that there is no saturated water layer inside the constructed wetland.
[0038] Further, the plant lay...
Embodiment 2
[0048] The present invention shows an embodiment of a method for treating grey water using the grey water treatment system of a dry constructed wetland in the grey-black separation mode described in Embodiment 1, which adopts a periodic intermittent manner of mode 1 combined with mode 2 the treatment of grey water;
[0049] The method for treating grey water in a periodic and intermittent manner includes: 2 operating modes, wherein the first mode is an intermittent operation mode in which the bed is rested for 2 days every 5 days of operation; the second mode is: when the constructed wetland system is running , at the frequency of 4 to 6 cycles per day, using the operation mode of rapid water inflow - purification - emptying and re-oxygenation;
[0050] The second mode specifically includes:
[0051] Step 1. Water inlet: 7.13 L / m 2 The flow rate of min will adjust the gray water in the sedimentation tank and evenly discharge it into the tank body 6 of the dry-type constructe...
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