Production method of novel sludge compound adsorbent

[0017] Take the remaining sludge from urban sewage treatment plants, put it in a cool and dry place for 10 days, air-dry it under natural wind conditions, then put it in an oven and dry it to a constant weight below 100°C, grind and sieve (80 mesh), and the particle size is Sludge particles smaller than 180 μm. Accurately weigh 30 parts for use, put the sludge adsorbent into industrial wastewater with a cadmium ion concentration of 20mg / L, adsorb at room temperature for 12 hours, centrifuge at 4000rpm for 5 minutes, collect the supernatant, and use the flame atomic absorption method to determine the concentration of cadmium. The concentration of cadmium ions in the clear liquid is 12.3 mg / L, and the adsorption capacity of the new composite sludge adsorbent to the cadmium ions in the industrial sewage is 2.57 mg / g.

[0019] Take the remaining sludge from urban sewage treatment plants, put it in a cool and dry place for 10 days, air-dry it under natural wind conditions, then put it in an oven and dry it to a constant weight below 100°C, grind and sieve (80 mesh), and the particle size is Sludge particles smaller than 180 μm. Accurately weigh 30 parts for use, and prepare 5 parts of the activated peat microbial preparation prepared with activated peat and beneficial bacteria for use, mix the two evenly and prepare a new type of composite sludge adsorbent, which can be directly use or air spare. The new composite sludge adsorbent prepared was put into industrial wastewater with a cadmium ion concentration of 20 mg / L, adsorbed at room temperature for 12 h, centrifuged at 4000 rpm for 5 min, and the supernatant was collected, and the supernatant was determined by flame atomic absorption spectrometry The concentration of cadmium ions in the industrial sewage is 6.5 mg / L, and the adsorption cap

[0021] Take the remaining sludge from urban sewage treatment plants, put it in a cool and dry place for 10 days, air-dry it under natural wind conditions, then put it in an oven and dry it to a constant weight below 100°C, grind and sieve (80 mesh), and the particle size is Sludge particles smaller than 180 μm. Accurately weigh 30 parts for use, and prepare 15 parts of the activated peat microbial preparation prepared with activated peat and beneficial bacteria for use, mix the two evenly and prepare a new type of composite sludge adsorbent, which can be directly use or air spare. The new composite sludge adsorbent prepared was put into industrial wastewater with a cadmium ion concentration of 20 mg / L, adsorbed at room temperature for 12 h, centrifuged at 4000 rpm for 5 min, and the supernatant was collected, and the supernatant was determined by flame atomic absorption spectrometry. The concentration of cadmium ions is 3.2 mg / L, and the adsorption capacity of the new compos