Municipal domestic sludge resourceful treatment process
The invention provides a municipal domestic sludge resourceful treatment process which comprises the following steps: (1) uniformly stirring and mixing sludge and domestic sewage to prepare mixed slurry, then introducing the obtained mixed slurry into an aeration tank provided with an ultrasonic gen...
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| creator | CHENG HUARONG ZHAN LINGLING WANG JINXIA LI XIELING |
| description | The invention provides a municipal domestic sludge resourceful treatment process which comprises the following steps: (1) uniformly stirring and mixing sludge and domestic sewage to prepare mixed slurry, then introducing the obtained mixed slurry into an aeration tank provided with an ultrasonic generator probe, and carrying out ultrasonic treatment for 2.5-3 minutes; (2) adding dilute sulfuric acid into the treated mixed slurry, adjusting the pH value to 2-3, then adding a heavy metal passivator into the mixed slurry, carrying out a stirring reaction for 10-12 h, then adding crushed waste eggshells into the mixed slurry, and adjusting the pH value to 7.0; and (3) adding grape straw, waste fishbone dust, livestock and poultry manure and a microbial agent into the obtained mixed slurry, uniformly mixing, carrying out aerobic fermentation to obtain a fermented material, drying the fermented material, and applying the dried fermented material to agriculture or gardens. According to the sludge treatment process d |
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| subjects | CHEMISTRY METALLURGY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Municipal domestic sludge resourceful treatment process |
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