Process for improving utilization property of high-solid-content anaerobic digested sludge land
An anaerobic digestion and high solids content technology, applied in the field of solid waste recycling, can solve the problems of long time-consuming aerobic composting, adding a large amount of auxiliary materials, and generating large odors, etc., to achieve increased sludge treatment capacity, short residence time, cost-saving effect
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Embodiment 1
[0025] Table 1-1 Analysis of properties of biogas residue discharged from an anaerobic digestion reactor
[0026]
[0027] Put 800g of high-solid biogas residue remaining after the above-mentioned sludge was treated by mesophilic anaerobic digestion into a 3L aerobic reactor for semi-continuous operation. 0.2m 3 / h, SRT8d, feed and discharge 200g per day, about 2 SRTs (16d) run stably. Table 1-2 shows the properties of the reactor discharge at the end of the third and fourth SRTs. It can be clearly seen that the degradation of VS, TKN, TAN, TOC and VFA, the degradation rates of VS are 6.9% and 13.4% respectively; the degradation rate of TKN They were 54.5% and 49.5%; TAN reduction rates were 85.6% and 87.7%; TOC degradation rates were 32.7% and 14.3%; VFA degradation rates were 92.6% and 91.0%.
[0028] Table 1-2 Analysis of the properties of the micro-aerobic reaction output
[0029]
[0030] The phytotoxicity test of the micro-aerobic reaction output and the biogas ...
Embodiment 2
[0034] Table 2-1 Analysis of properties of biogas residue discharged from an anaerobic digestion reactor
[0035]
[0036] Put 800g of high-solid biogas residue remaining after the above-mentioned sludge was treated by mesophilic anaerobic digestion into a 3L aerobic reactor for semi-continuous operation. 0.2m 3 / h, SRT8d, feed and discharge 200g per day, about 2 SRTs (16d) run stably. Table 2-2 shows the properties of the reactor discharge at the end of the third and fourth SRTs. It can be clearly seen that the degradation of VS, TKN, TAN, TOC and VFA, the degradation rates of VS are 6.4% and 7.6% respectively; the degradation rate of TKN They were 44.4% and 39.4%, respectively; TAN reduction rates were 66.1% and 72.3%; TOC degradation rates were 36.5% and 12.6%; VFA degradation rates were 88.1% and 94.1%.
[0037] Table 2-2 Analysis of the properties of the micro-aerobic reaction output
[0038]
[0039] The phytotoxicity test of the microaerobic reaction output and...
Embodiment 3
[0043] Table 3-1 Analysis of properties of biogas residue discharged from an anaerobic digestion reactor
[0044]
[0045]Put 800g of high-solid biogas residue remaining after the above-mentioned sludge was treated by mesophilic anaerobic digestion into a 3L aerobic reactor for semi-continuous operation. 0.2m 3 / h, SRT8d, feed and discharge 200g per day, about 2 SRTs (16d) run stably. Table 3-2 shows the properties of the reactor discharge at the end of the third and fourth SRTs. It can be clearly seen that the degradation of VS, TKN, TAN, TOC and VFA, the degradation rates of VS are 12.5% and 13.7% respectively; the degradation rate of TKN They were 54.5% and 47.5%, respectively; TAN reduction rates were 82.5% and 83.4%; TOC degradation rates were 12.3% and 3.2%; VFA degradation rates were 45.5% and 28.1%.
[0046] Table 3-2 Analysis of the properties of the micro-aerobic reaction output
[0047]
[0048] The phytotoxicity test of the microaerobic reaction output a...
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