A kind of sludge dehydration conditioner and deep dehydration method thereof
A sludge dewatering and deep dewatering technology, applied in the direction of dewatering/drying/concentrating sludge treatment, can solve the problems of high cost of sludge drying treatment, unfavorable sludge resource utilization, etc., to shorten the settling time and speed up the settling rate. , the effect of good application prospects
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Embodiment 1
[0016] 1) Take the sludge from Xiangtan Sewage Treatment Plant, which has a water content of 98%, and then add the semi-coke product obtained by pyrolysis of Shaanxi coal at 650°C for 1.0h. The particle size of the semi-coke is 0.045mm-0.425mm. 2% of the weight of the water-containing sludge, fully stirred for 10 minutes;
[0017] 2) Then add polyacrylamide, the dosage of polyacrylamide is 0.0001% of the weight of the water-containing sludge, and stir for 10 minutes.
[0018] 3) After the conditioned sludge is left in the sedimentation tank for 15 minutes, the concentrated sludge is drawn from the bottom of the sedimentation tank, introduced into a plate and frame filter press for dehydration, and kept at a pressure of 0.8MPa for 20 minutes;
[0019] 4) Release the pressure and discharge the material.
[0020] The moisture content of the mud cake after dehydration is 49.8%.
Embodiment 2
[0022] 1) Take the sludge from Xiangtan Sewage Treatment Plant with a water content of 98%, and then add the semi-coke product obtained by pyrolysis of Shaanxi coal at 650°C for 1.0h. The particle size of the semi-coke is 0.045mm-0.425mm, and the dosage of semi-coke 2% of the weight of the water-containing sludge, fully stirred for 10 minutes;
[0023] 2) Then add polyacrylamide, the dosage of polyacrylamide is 0.0002% of the weight of aqueous sludge, and stir for 10 minutes.
[0024] 3) After the conditioned sludge is left in the sedimentation tank for 20 minutes, the concentrated sludge is drawn from the bottom of the sedimentation tank, introduced into a plate and frame filter press for dehydration, and kept at a pressure of 2.0MPa for 20 minutes;
[0025] 4) Release the pressure and discharge the material.
[0026] The moisture content of the mud cake after dehydration is 49.2%.
Embodiment 3
[0028] 1) Take the sludge from Xiangtan Sewage Treatment Plant, which has a water content of 98%, and then add the semi-coke product obtained by pyrolysis of Shaanxi coal at 650°C for 1.0h. The particle size of the semi-coke is 0.045mm-0.425mm. 3% of the weight of the water-containing sludge, fully stirred for 15 minutes;
[0029] 2) Then add polyacrylamide, the dosage of polyacrylamide is 0.0003% of the weight of aqueous sludge, and stir for 10 minutes.
[0030] 3) After the conditioned sludge is allowed to stand in the sedimentation tank for 20 minutes, the concentrated sludge is drawn out from the bottom of the sedimentation tank, introduced into a plate and frame filter press for dehydration, and kept at a pressure of 3.0 MPa for 30 minutes;
[0031] 4) Release the pressure and discharge the material.
[0032] The moisture content of the mud cake after dehydration is 45.9%.
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