A kind of sludge drying conditioner and preparation method thereof
A technology of sludge drying and conditioning agent, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of poor effluent quality, high cost, poor solubility, etc., to improve efficiency , Increase the adsorption site, enhance the effect of adsorption performance
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Embodiment 1
[0027] A sludge drying conditioner obtained by hydrothermal reaction of a physical conditioner, polyquaternium salt and attapulgite; the mass ratio of the physical conditioner, polyquaternium salt and attapulgite is 2:0.6-0.8 : 1~1.5; Wherein, physical conditioning agent adopts as modified furfural slag; Polyquaternium salt is polyquaternium salt-7 [P (DM-AM)], and it is the natural polymer quaternization by modification or Polymers synthesized by homopolymerization or copolymerization of cationic monomers. The modified furfural slag is obtained by modifying furfural slag through hydrothermal reaction. Furfural slag refers to the waste left after furfural is extracted from biomass materials such as corncobs, straw or rice husks. It is rich in cellulose, hemicellulose and lignin, and is acidic.
[0028] Furfural slag will be partially carbonized during the hydrothermal reaction process, and the internal porous block carbon network and spherical hydrophobic carbon skeleton stru...
Embodiment 2
[0032] A preparation method of sludge drying conditioner, the specific steps are as follows:
[0033] Step 1. Wash the furfural slag with clear water to remove chloride ions in the furfural slag.
[0034] Step 2. Put the cleaned furfural slag in a crusher for crushing, then add the furfural slag, boric acid and water to the polytetrafluoroethylene lining in a mass ratio of 0.5-1:0.7-1.2:2 In the still, carry out hydrothermal reaction at 220°C for 8 hours to obtain modified furfural slag.
[0035] Step 3. Add polyquaternium-7[P(DM-AM)] and attapulgite to the reaction kettle, carry out hydrothermal reaction at 120°C, and react for 1h, wherein modified furfural slag, poly The mass ratio of quaternary ammonium salt-7[P(DM-AM)] to attapulgite is 2:0.6~0.8:1~1.5.
[0036] Step 4. Place the hydrothermally reacted mixture in the reactor in an oven at 60°C for drying, then transfer the dried mixture to a grinder for grinding, and pass through a 60-mesh sieve to obtain a sludge drying...
Embodiment 3
[0043] The mass ratio of modified furfural slag, polyquaternium salt and attapulgite as the raw material of sludge drying conditioner is 2:0.7:1.3. Use the sludge drying conditioner to carry out the sludge conditioning test, as follows:
[0044] The sludge with a moisture content of 95% is conditioned by using a sludge drying conditioner. The addition of the conditioner is 4% (mass) of the dry weight of the sludge. After the sludge and the conditioner are stirred evenly, they are fully reacted for 1 hour, and then the reaction The final sludge solution is precipitated to realize the separation of mud and water. Finally, the separated sludge is put into a plate and frame filter press for pressing and dehydration, and finally a mud cake is formed. The dehydration pressure is 1 MPa, and the pressing and dehydration time is 1 to 2 hours.
[0045] Take 100g of the obtained mud cake to measure the water content and dry weight. The water content after sludge dehydration is 50% to 55%...
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